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安井 八紀, 大熊 武司, 吉江 慶祐, 鶴見 俊雄
2013 年 19 巻 42 号 p.
413-418
発行日: 2013/06/20
公開日: 2013/06/20
ジャーナル
フリー
Increasing number of high-rise buildings are being equipped with energy absorption devices of elasto-plastic materials. It is important to ensure the safety of these devices to not only under design wind speed but also under cumulative fatigue damage due to wind loading during use. In determining cumulative damage, it is necessary to evaluate the cumulative time of wind speed in a period and the wind response to each wind speed. This paper presents a simple method for evaluating the cumulative time of wind speed in a period and its effectiveness.
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荒川 利治, 菊永 祐太
2013 年 19 巻 42 号 p.
419-424
発行日: 2013/06/20
公開日: 2013/06/20
ジャーナル
フリー
This paper describes the dynamic characteristics based on microtremor measurement data concerning a high rise steel building. The object building which was completed in October 1998 is 120 m height and rectangular plan. Microtremor measurement is continued periodically in the building. The acceleration and velocity of measurement data in two horizontal directions and torsional direction are analyzed for natural frequencies and damping ratios on 1st mode to 4th mode. The changes along passages and the dispersions of those dynamic characteristics in microtremor are studied. And the relations between vibration amplitude and damping ratios in free vibration waves employing manpower excitation are discussed.
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渡辺 重仁, 添田 幸平, 佐藤 大樹, 北村 春幸, 石井 正人, 吉江 慶祐, 宮崎 充, 佐々木 和彦, 岩崎 雄一
2013 年 19 巻 42 号 p.
425-430
発行日: 2013/06/20
公開日: 2013/06/20
ジャーナル
フリー
This paper describes the passive control design performance evaluation method which is considering the influence of the wall viscous damper placement in the high-rise building. The passive control design performance can be evaluated from only two-types of static analysis results without using time history response analysis results. These static analyses can estimate the upper and lower limit of the ratio of the effective deformation as evaluation index of performance. Validity of this evaluation method is demonstrated by comparing with the time history analysis results.
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松本 幸大, 松本 拓也, 山田 聖志
2013 年 19 巻 42 号 p.
431-434
発行日: 2013/06/20
公開日: 2013/06/20
ジャーナル
フリー
In recent years, it is pointed that the natural period of the buildings varies by the earthquakes or aging degradation. Hence the structural health monitoring (SHM) is developed in order to detect the degradation of the structural seismic performance. The authors have been performing the real-time vibration monitoring by using the new fiber Bragg grating (FBG) accelerometers for 3 years. Based on these, this paper shows the results of vibration monitoring by using the FBG accelerometers. Also it is proposed that the FBG accelerometers can be easily applied to the existing buildings for reasonable SHM.
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上林 宏敏, 永野 正行
2013 年 19 巻 42 号 p.
435-440
発行日: 2013/06/20
公開日: 2013/06/20
ジャーナル
フリー
The force-displacement and the damping-displacement relations of skyscrapers were evaluated from the recorded motions in 20 steel and 14 reinforced-concrete buildings during the main large earthquakes (The 2011 off the Pacific coast of Tohoku Earthquake (Mw9.0), The 1995 Southern Hyogo prefecture earthquake (Mw6.9), the South-east off Kii-peninsula earthquake 2004 (Mw7.5)). Regardless of the earthquakes, the regression curves of the relations to the reinforced-concrete buildings were able to express especially on the basis of the bilinear model of the single-degree-of-freedom system. On the other hand, the degree of the relations to the steel buildings was quite lower than the reinforced-concrete buildings.
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荒川 利治, 沼 昌昭, 菊永 祐太, 中村 尚弘, 鈴木 琢也, 木下 拓也
2013 年 19 巻 42 号 p.
441-446
発行日: 2013/06/20
公開日: 2013/06/20
ジャーナル
フリー
This paper describes the system identification of soil-structure interaction system based on earthquake observation data concerning a middle-rise steel building. The object building whose height is 44 m is used for school. Earthquake observations are performed in some stories of the building, ground surface and 30 m below ground. A sway-rocking model is applied for the analysis model. Natural frequencies and damping ratios of 1st mode are analyzed based on microtremors and measured earthquake waves. In analysis of earthquake responses, parameters are story stiffness and damping ratio of this building depending on vibration amplitude levels, and soil impedance.
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−2011年東北地方太平洋沖地震時の強震記録に基づく検討−
山本 健史, 保井 美敏, 永野 正行, 肥田 剛典, 田沼 毅彦, 渡辺 一弘
2013 年 19 巻 42 号 p.
447-452
発行日: 2013/06/20
公開日: 2013/06/20
ジャーナル
フリー
During the 2011 off the Pacific coast of Tohoku Earthquake, strong motion wave observed at the 30-story reinforced concrete super high-rise building located on poor ground in the Kanto region. By response simulation analysis, a particular response behavior of the building during this earthquake were explored, and then the relationship between damage to building interior and response simulation analysis results were carried out.
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三木 広志, 池永 昌容, 五十子 幸樹, 井上 範夫
2013 年 19 巻 42 号 p.
453-456
発行日: 2013/06/20
公開日: 2013/06/20
ジャーナル
フリー
A new device is proposed for controlling seismic displacement of a base-isolated building structure by means of a variable oil damper (VOD). This damper provides large damping to reduce the response displacement of the base-isolation layer in severe or extreme seismic events, whereas it provides small damping to reduce the response acceleration of the superstructure in moderate seismic events.
Through shaking table tests, it is shown that the VOD can effectively reduce the maximum displacement of the base-isolation layer without increasing the damper force. Comparisons on analytical and experimental results verified the validity of the proposed analysis method.
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米田 春美, 高岡 栄治, 欄木 龍大, 飯場 正紀
2013 年 19 巻 42 号 p.
457-460
発行日: 2013/06/20
公開日: 2013/06/20
ジャーナル
フリー
Based on published reports, data of 65 of seismically isolated buildings about design information and earthquake observation results were collected in the 2011 off the Pacific coast of Tohoku Earthquake. Performance of seismically isolated buildings was investigated. Earthquake motions, responses of accelerations were in the range of 6-756cm/s
2. The acceleration responses of superstructures were at most 250cm/s
2. The maximum displacement responses of isolator were about 24cm. Cumulative displacements were 100 times as large as maximum displacements.
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品川 祐志, 三田 彰
2013 年 19 巻 42 号 p.
461-464
発行日: 2013/06/20
公開日: 2013/06/20
ジャーナル
フリー
We propose a new method to estimate maximum story drift angle during a large earthquake using only one accelerometer. The method is based on the assumption that the maximum response is mainly due to low modal components. However, the use of only first two modes was found erroneous. In this paper, we propose adding rigid body motion components in addition to first two modes. Simulation and experiments results confirmed the feasibility of the method.
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（制振補強効果による動的性能向上倍率の算出）
佐藤 匠, 笠井 和彦, 久保田 雅春, 山下 忠道, 伊藤 真二, 坂田 弘安, 北嶋 圭二, 都祭 弘幸, 高橋 孝二, 清水 英, 梁 ...
2013 年 19 巻 42 号 p.
465-470
発行日: 2013/06/20
公開日: 2013/06/20
ジャーナル
フリー
Seismic reinforcement by Passive Control System is dynamic design, it’s a performance evaluation of buildings due to drift angle. That is why, it is difficult to evaluate with current seismic index of Structure.In this paper, we propose a method for calculating the conversion index that to evaluate the dynamic performance. In addition, considering the correction factor the converted seismic index of Structure. Then, we discuss the relationship between level and the conversion index affected.
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仲村 崇仁, 菊地 優, 石井 建, 河内山 修
2013 年 19 巻 42 号 p.
471-476
発行日: 2013/06/20
公開日: 2013/06/20
ジャーナル
フリー
Ultimate behavior of Lead Rubber Bearing (LRB) and Natural Rubber Bearing (RB) was investigated by bi-directional loading tests. LRB specimens provided by 7 types small models, which have square and circular shape, varied lead plug diameters, lead plug disposition and rubber layers. RB specimen was provided by square shape without lead plug. In this study it was cleared that brake-shear-strain was not influenced by the cross-section shape, lead plug diameters, and lead plug dispositions. Moreover LRB wasn’t spoiled for brake-shear-strain under the bi-directional loading. It was also found that the brake-shear-strain of LRB was the same as that of RB.
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猿田 正明, 山本 祥江, 森川 和彦, 中西 啓二, 飯場 正紀, 小豆畑 達哉, 井上 波彦
2013 年 19 巻 42 号 p.
477-480
発行日: 2013/06/20
公開日: 2013/06/20
ジャーナル
フリー
Performance of the super high-rise seismically isolated building during the Great East Japan Earthquake was reported. The response acceleration of the top floor was almost same as that of the 1st floor. The maximum displacement of the isolation devices was 15 cm, and the cumulative displacement was about 10 m. The dynamic response analysis, considered variation of the characteristic of rubber bearing, ambient temperature and so on, was coincident with observed records.
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内田 明彦, 小田島 暢之, 山下 清
2013 年 19 巻 42 号 p.
481-484
発行日: 2013/06/20
公開日: 2013/06/20
ジャーナル
フリー
In this paper, two building foundations improved by the grid-form ground improvement method are introduced. The field investigation results of the ground around the building after the 2011 earthquake are presented. The effect of the liquefaction prevention of the grid-form ground improvement ground is discussed based on the dynamic nonlinear analysis for foundation soil layers with an actual acceleration record. Comparing the field investigation result with the simulation analysis, it is concluded that the grid-form ground improvement prevented the liquefaction of the original soil surrounded by the grid-form walls during the 2011 earthquake.
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持田 泰秀, 塚本 政昭
2013 年 19 巻 42 号 p.
485-490
発行日: 2013/06/20
公開日: 2013/06/20
ジャーナル
フリー
This study is to local fluidization process soil solidifying material cement, water and kneaded, is the content on the development of ground improvement method to build a block-shaped body. Using a bucket mixer was developed to obtain a homogeneous expression intensity. Using the apparatus has been developed and construction management, ensure the timely improvement to a visual representation of the body during construction, to enable constant monitoring. The sampler yet solidified, multiple samples were taken, promptly, to enable the evaluation of compressive strength, improved homogeneity of the whole body.
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廣瀬 智治, 坂本 俊彦, 市川 和臣, 阿部 幸夫, 北濱 雅司, 高野 公寿, 中井 正一, 田村 修次
2013 年 19 巻 42 号 p.
491-496
発行日: 2013/06/20
公開日: 2013/06/20
ジャーナル
フリー
Pile foundation arranged short piles tend to reduce the shearing force and bending moment of bearing piles by short piles. The authors carried out Static FEM about the steel pipe pile foundation embedded in elastic ground. It turned out that lateral effect of pile group about pile foundation arranged short piles can be denoted by a past estimation method by taking the influence of short piles into consideration. Moreover, comparison of dynamic centrifuge tests and static analysis which imitated these tests showed that estimation method taking the influence of short piles was appropriate in general.
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平井 芳雄, 若井 修一, 青木 雅路
2013 年 19 巻 42 号 p.
497-500
発行日: 2013/06/20
公開日: 2013/06/20
ジャーナル
フリー
Field construction test of cast-in-place concrete pile using high-strength concrete has been carried out in order to clarify the strength development of high-strength concrete placed with cast-in-place concrete pile construction method. Compressive strength of core specimens sampled from pile concrete was compared with that in full scale model of column using the same concrete mix proportion. The results indicated that the strength development of high-strength concrete constructed under the adequate construction management of cast-in-place concrete pile was very similar to that of high-strength concrete of superstructure.
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米田 良祐, 山下 哲郎
2013 年 19 巻 42 号 p.
501-506
発行日: 2013/06/20
公開日: 2013/06/20
ジャーナル
フリー
School gymnasiums are often used as shelter for the neighbors after great earthquakes. For that, fall or damage of outer cladding due to large deformation of the structure must be avoided. In the present study, steel braced frames in longitudinal direction of four real school gymnasiums where the seismic retrofit has been completed are adopted as the structural models. 3D inelastic response analysis is conducted to investigate the correlation between the response story drift or ductility demand of the braces and the seismic performance index
Is. Moreover, applicability of the limit strength calculation using simple mass-spring model is verified.
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宮本 慎宏, 和田 耕一, 杉森 正敏
2013 年 19 巻 42 号 p.
507-511
発行日: 2013/06/20
公開日: 2013/06/20
ジャーナル
フリー
There are traditional wooden buildings supported with overhang which is relatively weaker than the foundation. In this paper, micro-tremor measurement and seismic response analysis for these buildings are performed to grasp their vibration characteristics and seismic performance. From the results of these analysis, their vibration characteristics and the factor to influence their seismic response is examined.
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楠 寿博, 大野 正人
2013 年 19 巻 42 号 p.
513-518
発行日: 2013/06/20
公開日: 2013/06/20
ジャーナル
フリー
In order to investigate the lateral shear performance of newly developed wooden grid shear wall, full-scale static test by repeated shear loading was carried out. The beam and column members were made of Japanese cedar and the wall was partly reinforced by plywood. As a result, the wall didn’t reach ultimate strength even at 1/7.9(rad) of deformation angle, and it was confirmed that the wall had a high ductility capacity which was derived from plastic rotational embedment resistance of joint parts.
The simple evaluation method of the wall was suggested. It was confirmed that the method was appropriate, comparing with the result of the experiment.
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古田 智基, 中尾 方人, 完山 利行
2013 年 19 巻 42 号 p.
519-524
発行日: 2013/06/20
公開日: 2013/06/20
ジャーナル
フリー
A new type brace fastener which fastens the end of a diagonal wood brace to the end of column is developed for Post and Beam construction wooden houses. Since the brace fastener contains high damping rubber, it absorbs a displacement between the end of a wood brace and a column, damage of wood around wood screws is able to be minimized. On static shear loading test, allowable shear strength of a braced wood frame with the new brace fasteners was 4.4kN. From shake table test of a braced wood frame, it was found that a response displacement in the case of the one with the new brace fasteners was conservative in comparison with the case of the one using normal brace fasteners especially under large earthquake motion. Moreover, by means of earthquake response analysis, it was confirmed that the new brace fastener reduces a response displacement under several earthquake motions.
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乾式土壁パネルを用いた場合
中尾 方人, 後藤 正美, 鈴木 祥之
2013 年 19 巻 42 号 p.
525-530
発行日: 2013/06/20
公開日: 2013/06/20
ジャーナル
フリー
Static shear loading tests on single full-height walls, hanging walls and window-back walls using dry-mud panels were conducted. And then, push-over analysis of combinations of the walls was performed, it was found that summation of shear forces of the single walls is higher than the shear force of combined analysis model except for the range of relatively large deformation. Consequently, to evaluate shear strength of traditional wooden building with dry-mud panel, summation of shear forces of the single walls was found to be adequate.
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河内 武, 貞広 修, 木村 誠, 近藤 一夫
2013 年 19 巻 42 号 p.
531-536
発行日: 2013/06/20
公開日: 2013/06/20
ジャーナル
フリー
The static-loading experiments on the improved Nageshi, which has an effect in the antiseismic reinforcement of a traditional wooden structure, are performed. The devised points of the improved Nageshi are the followings. 1) The area in which wood caves is increased. 2) The junction of Nageshi is reinforced with Japanese-type nails. The following knowledge were acquired as the results of the experiment. 1) Strength degradation of Nageshi without a joint is small. 2) Reinforcement with 6-sun Japanese-type nails prevent strength degradation of Nageshi with a joint. 3) An outer column type joint is as strong as the inner column one.
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−1/6縮小モデルの振動台実験（その2）−
梶川 久光, 岡田 由佳, 大澤 敦, 野口 弘行
2013 年 19 巻 42 号 p.
537-542
発行日: 2013/06/20
公開日: 2013/06/20
ジャーナル
フリー
We experimented on the shaking table of the 1/6 scale models of slip hysterisis characteristic that assumes the timber framework construction. And, we experimented the addition of the damper to those models. We summarized the influence of the modulus of eccentricity, the floor stiffness, and the oil damper upon seismic peak response displacement from this shaking table in reference literature (1). This report verified the influence that the modulus of eccentricity, the floor stiffness, and the oil damper exert on the seismic peak response acceleration and the change in the dominant frequency.
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田邊 裕介, 石川 裕次, 藤井 英二
2013 年 19 巻 42 号 p.
543-548
発行日: 2013/06/20
公開日: 2013/06/20
ジャーナル
フリー
In this paper, a new connection for free-form steel structures using FRCC (Fiber-Reinforced Cementitious Composite) is proposed. The connection is an improved version from the previous one proposed by the authors. Firstly, basic material characteristics of FRCC using high strength mortar and two types of steel fibers are investigated through compression and bending tests. Then a full-scale connection composed of the FRCC, stud-welded rebars and shear connectors is constructed and subjected to cyclic bending. It is shown that the connection is capable of transmitting nearly half the bending capacity of the connected steel members. During the test, bond stress distribution of a stud-welded rebar to the FRCC is observed in detail.
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細矢 博, 舟山 勇司, 河野 政典, 益尾 潔
2013 年 19 巻 42 号 p.
549-554
発行日: 2013/06/20
公開日: 2013/06/20
ジャーナル
フリー
Recent super high-rise buildings adopt Fc100 N/mm
2 class concrete columns. High-strength concrete columns of Fc150 N/mm
2 class are also under development. However, existing studies have identified no sufficient structural properties of high strength columns, so we conducted loading tests to identify such properties. The tests revealed that strength and ductility were 10 to 15 % and 20 to 30 % higher, respectively in reinforced concrete columns with steel fiber jacketing or steel plates jacketing than in conventional columns, and could secure marginal drift angle of R=1/25 rad or higher under high axial forces with 0.5 axial force ratio.
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益尾 潔, 堂下 航, 森 裕重
2013 年 19 巻 42 号 p.
555-560
発行日: 2013/06/20
公開日: 2013/06/20
ジャーナル
フリー
The authors proposed estimation formula of allowable shear strength of R/C beams in consideration of residual shear crack width. However, this formula is not applied to R/C columns. The authors conduct tests of R/C columns using 685N/mm
2 shear reinforcement under comparative low axial force. Based on these tests result, the precision of estimated allowable and ultimate shear strength of R/C columns is clarified.
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荒木 秀夫, 星川 知毅
2013 年 19 巻 42 号 p.
561-566
発行日: 2013/06/20
公開日: 2013/06/20
ジャーナル
フリー
It is important to investigate mechanical properties of concrete in the seismic evaluations. Maximum strength and Young’s modulus of concrete are directly related to the seismic performance of the RC existing buildings. Young’s modulus is concerned with the shear strength of the post-installed anchor bolts used in the retrofitting process. In this paper, the mechanical properties of the concrete from the SRC building constructed 38 years ago were discussed based on the stress strain curves which were obtained from the compressive tests.
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長塚 典和, 妹尾 嘉章, 久保田 雅春
2013 年 19 巻 42 号 p.
567-572
発行日: 2013/06/20
公開日: 2013/06/20
ジャーナル
フリー
In order to verify the performance of a seismic retrofit method that connects additional slabs with outerfreme installed damping system to the existing building, dynamic loading tests were conducted. For the form of retrofit, whether or not the additional slabs have sufficient stress transfer capacity is important. In this study, the stress transfer capacity of slabs were verified. As a result, it was verified that the stress transfer capacity remained intact and that the damping system were effective for controlling vibrations. It was also found that an evaluation model considering additional slabs could appropriately evaluate the results of tests.
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島田 侑子, 山田 哲, 吉敷 祥一, 伊山 潤, 松本 由香, 浅田 勇人
2013 年 19 巻 42 号 p.
573-578
発行日: 2013/06/20
公開日: 2013/06/20
ジャーナル
フリー
Under the 2011 Tohoku earthquake, many buildings were suffered by strong ground motion and tsunami. A total of 216 of damaged steel buildings of public educational institutes including 147 of gymnasiums were investigated from April to June 2011 by AIJ. In this paper, correspondences between seismic damage of steel school buildings and the ground transformation are reported.
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中川 真里奈, 佐藤 大樹, 長江 拓也, 北村 春幸, 佐野 剛志
2013 年 19 巻 42 号 p.
579-584
発行日: 2013/06/20
公開日: 2013/06/20
ジャーナル
フリー
According to the past researches, the structural damage of high-rise steel building when subjected to long-period ground motions is characterized by the concentration of deformation to beam-column connections. In addition, it is known the field weld connection details tend to have poor deformation capacity. So far, there is no comprehensive data base about beam-column connection details of existing high-rise buildings. This study provides a data base of high-rise steel buildings, focusing on the beam-column connection details.
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吉敷 祥一, 山田 哲, 松本 由香, 浅田 勇人, 小山 毅, 島田 侑子
2013 年 19 巻 42 号 p.
585-590
発行日: 2013/06/20
公開日: 2013/06/20
ジャーナル
フリー
A reconnaissance of steel school buildings and gymnasiums damaged by the 2011 Tohoku earthquake has been conducted by the Architectural Institute of Japan. This paper focuses on seismic damage to column bases and roof joints. In pre-1982 buildings, early fracture of vertical brace connections tended to reduce damage of column bases. Although the design procedure of brace connections was improved in 1981, it was not till 1995 that the procedure for column bases was revised. Therefore, in post-1982 pre-1995 buildings, the relatively strong brace connections tend to induce severe damage to column bases.
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ユリア ハヤティ, 真田 靖士, 笠原 崇佑, 朝長 拓也
2013 年 19 巻 42 号 p.
591-594
発行日: 2013/06/20
公開日: 2013/06/20
ジャーナル
フリー
This paper proposes a new out-of-plane loading system for masonry walls. Uniform distributed loads are applied to masonry walls by a rubber airbag. The test system was developed aiming at obtaining basic mechanical characteristics of simply supported masonry walls in the out-of-plane direction. In this study, two kinds of structural tests were conducted (a) to verify the developed loading system by using an aluminum plate specimen, and (b) to evaluate the out-of-plane performance of a brick wall specimen. Consequently, the test results clarified (a) good agreements between the experimental measurements and theoretical estimations, and (b) vulnerability of the brick wall.
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井上 竜太, 岡野 利行
2013 年 19 巻 42 号 p.
611-614
発行日: 2013/06/20
公開日: 2013/06/20
ジャーナル
フリー
This paper describes the development of passive reduction of heavy-weight floor impact sounds by tuned mass dampers set at ceiling. Experiment was carried out with ceiling of the specification of general multiple dwelling houses. By using the tuned mass dampers composed of a viscoelastic body and a 50mm steel cube, the vibration acceleration level of the ceiling was decreased by 12dB. As a result, heavy-weight floor impact sounds level was decreased by 4-5dB.
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山口 晃治, 増田 潔, 宇津木 淳一, 長田 篤佳, 市原 英樹, 梅津 匡一
2013 年 19 巻 42 号 p.
615-618
発行日: 2013/06/20
公開日: 2013/06/20
ジャーナル
フリー
An enclosed demolition method with the roof for a high-rise building can reduce the noise propagation to the neighborhood in comparison with a conventional demolition method without the roof. In order to grasp and predict the noise propagation, various measurements and numerical analysis by extended energy integral equations were performed. By comparing the measurement results and analysis results, prediction accuracy was verified. Noise propagations of an enclosed demolition method and a conventional demolition method were compared by analysis.
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平光 厚雄, 井上 勝夫
2013 年 19 巻 42 号 p.
619-623
発行日: 2013/06/20
公開日: 2013/06/20
ジャーナル
フリー
The purpose of this study is to clarify the tendency to the reduction of heavy-weight floor impact sound of the floating floor by difference of the section specifications change. The floating floors were constructed in a box frame-type reinforced concrete construction which regulated in JIS A 1440-2, the reduction of transmitted heavy-weight floor impact sound levels were measured. From above results, the relationship between the section specification and the performances of them was examined. Moreover, the correspondence of two heavy/soft impact sources, a car-tire source and a rubber ball source, was investigated.
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−有限要素法を用いた乾式二重床の重量床衝撃音予測に関する検討 その２−
石丸 岳史, 高倉 史洋, 山下 恭弘
2013 年 19 巻 42 号 p.
625-630
発行日: 2013/06/20
公開日: 2013/06/20
ジャーナル
フリー
In this paper, we examined the distribution of sound pressure level of the air layer of the dry double floor using the finite element method. Impact source was used the impact force characteristics (1) of JIS A 1418-2. Distribution of sound pressure level of the floor of the air layer was under the influence of the vibration characteristics of the slab. Air layer under the floor was considered measurement point, and is compressed by bending wave of the slab around the measurement point.
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平尾 善裕, 国松 直, 東田 豊彦
2013 年 19 巻 42 号 p.
631-634
発行日: 2013/06/20
公開日: 2013/06/20
ジャーナル
フリー
Environmental vibration impact on humans in buildings is caused by ground-borne vibration due to rail transit systems, road traffic, construction sites, and industrial plants. To estimate the effect of vibration on humans, it is necessary to measure the tri-axial vibrations in the vertical and horizontal directions in buildings specified in the standards regulated by ISO2631-2:2003. Vibrations in two- and three-story detached houses of wooden or steel construction were measured. The vibration amplifications caused by building structural resonance were evaluated as ratios and level differences in 1/3 octave band vibration accelerations measured at ground near substructure and floors in the 120 houses vibration measurements.
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建築物ZEB化のための北陸の外壁面太陽光発電に関する研究
垂水 弘夫, 山口 翔太
2013 年 19 巻 42 号 p.
635-638
発行日: 2013/06/20
公開日: 2013/06/20
ジャーナル
フリー
The photovoltaics applied to the exterior wall of buildings is one of the elemental technologies of Net-zero Energy Buildings. The purpose of this study is to acquire the amount of solar radiation and power generation in eight vertical exterior wall sides, such as south, south-west, west, north-west, north, north-east, east and south-east directions, and to clarify the rate at the time of comparing with the horizontal surface or a 30-degree south slope. The observation system installed on the roof top of the building which locates in Hakusan-shi, Ishikawa prefecture is used for observation.
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PMV制御の導入による夏季室内温熱環境の改善効果を中心として
垂水 弘夫, 小林 泰典, 桑原 亮一, 岩瀬 和夫, 岡崎 俊春
2013 年 19 巻 42 号 p.
639-644
発行日: 2013/06/20
公開日: 2013/06/20
ジャーナル
フリー
PMV control system was applied for a ceiling radiation cooling/heating system utilizing groundwater as heat source/sink. Evaluation was based on the three season measurements of summer operation. The research results are summarized below:
1) Indoor PMV values were settled in the range of 0-1. 2) As compared with room temperature control, PMV values in the room under PMV control became low about 0.2. 3) The hunching phenomenon at night was canceled. 4) In PMV control, almost same indoor thermal environment was realized by the case which put the control position on the wall, and the case which placed the control position in the center of the room.
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若山 尚之, 長野 克則, 葛 隆生
2013 年 19 巻 42 号 p.
645-648
発行日: 2013/06/20
公開日: 2013/06/20
ジャーナル
フリー
The subject of this paper is the heat source system with the Ground Source Heat Pump(GSHP) system in the PHC foundation piles. The thermal storage characteristics of the ground may be used to improve the GSHP system performance in this hospital by alternating the storing and restoring cycle on day-night basis in the summer season. The analysis during the commissioning shows the effectiveness of the GSHP system concept and improved system performance as a result of changing the operational condition.
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宇城 拓平, 伊香賀 俊治, 目黒 康介
2013 年 19 巻 42 号 p.
649-654
発行日: 2013/06/20
公開日: 2013/06/20
ジャーナル
フリー
In this study, we model the estimation of the CO
2 balance throughout the life cycle of construction timber. We study about construction utilization period considering forest-growth and show the long-term estimate of the emission reduction effect. As a result, it was found that CO
2 balance become plus (absorption) using Japanese cedar and cypress in Kochi Prefecture more than 50 years as construction timber. Moreover, as a result of long-term estimate, we show emission reduction effect by increasing the construction timber volume and extending the utilization period.
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