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Article type: Cover
1975 Volume 234 Pages
Cover1-
Published: August 30, 1975
Released on J-STAGE: August 22, 2017
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Article type: Cover
1975 Volume 234 Pages
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Published: August 30, 1975
Released on J-STAGE: August 22, 2017
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Article type: Index
1975 Volume 234 Pages
Toc1-
Published: August 30, 1975
Released on J-STAGE: August 22, 2017
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Article type: Appendix
1975 Volume 234 Pages
App1-
Published: August 30, 1975
Released on J-STAGE: August 22, 2017
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KOICHI KISHITANI, AKIO BABA
Article type: Article
1975 Volume 234 Pages
1-11
Published: August 30, 1975
Released on J-STAGE: August 22, 2017
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AKEMI NOJIRI
Article type: Article
1975 Volume 234 Pages
13-21
Published: August 30, 1975
Released on J-STAGE: August 22, 2017
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This report deals with the shoring design for excavation. In the customary design of shrut-shorting, struts, which bear the whole load, are assumedly never dislocated and no consideration is given to the work sequence of excavation. In the strut design it is examined whether the axial force exceeds the allowable unit stress of member. However, shoring is designed to prevent soil and structures around the excavated site from moving towards the site. Therefore, the deformation as well as the strength of shoring members should be examined. It requires many assumptions and is rather difficult to calculate the deformation of shoring and the displacement of soil and near-by structures. Measured values of the strut axial force and the bending moment of the shoring walls during excavation are shown in Fig. 4.1. They show that the strut axial force remains constant or decreases somewhat with the progress of excavation. The modified dividing method shown in Fig. 3.8 is based on this performance. This report gives a calculation method of shoring in which the excavation sequence and above-mentioned bending moment change of shoring walls are taken into consideration. According to the new method shown in Fig. 3.3 and Fig. 3.4, basically, not only the unit stress of shoring members but also their strain should be examined. Because the soil pressure distribution and shoring model are considerably simplified, the unit stress of shoring members are easily determined. Measured valves and calculated values of shoring wall deformation and bendingmoment are shown in Fig. 4.1 and Fig. 4.2, and both values are highly consistent each other.
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HIROSHI NOGUCHI
Article type: Article
1975 Volume 234 Pages
23-34
Published: August 30, 1975
Released on J-STAGE: August 22, 2017
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This is the report of the experiments on reinforced concrete columns' the outline of which was reported in Part 1. The strain distribution of main bars and concrete, the bond stress and the bond slip distribution and the relationships between the bond stress and the bond slip are shown and discussed in comparison with the crack patterns and deflections. The results obtained are as follows, 1. At the maximum load the compressive strain of the top bar of the critical section decreased and the tensile strain zone became longer at the top bar than the bottom one. 2. The compressive strain of the concrete near the top bar increased. The tendency of the strain distribution of the concrete and the crack patterns and deflections were found to be the same. 3. The distribution of the bond stress corresponding to Fig. 14-7-A at the initiation of the positive load varied at some places as shown in Fig. 14-7-B. 4. The bond slip was larger at the tension zone especially near the zone of contraflexure. At the compression zone the bond slip increased gradually on the top bar than the bottom bar. 5. The bond slip measured directly and the one calculated from the strain distribution were almost consistent except the tension crack zone. The bond stress-bond slip relationships at the top were different from the same relationships at the bottom.
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TAKEKAZU TAGUCHI, AKIRA SASAGAWA
Article type: Article
1975 Volume 234 Pages
35-43
Published: August 30, 1975
Released on J-STAGE: August 22, 2017
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Presented in this paper is an experimental research to clarify what kind of reinforcement is more effective for beam-to-column connections consist of square-tube columns and rectangular-tube beams. So, we are concerned with the behavior of four different types of connections. Those specimens are loaded to be subjected to unti-symmetrical bending, shear and thrust in their connections. In consequence of experimental research, the connections which have diaphragms penetrating to tube-column or have stiffeners alongside with beam-web similar to horizontal hunch are excellent on strength and stiffness. Further, on the theoretical study, we discuss the shearing stress distribution of square-tube the wall thickness of which is more and more thin. Making use of the solution in the Part I, we can obtain the limiting values of thin wall. And the values of this approximate solution are in accordance with the values of shear flow theory and experimental values.
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YOSHIKATSU TSUBOI
Article type: Article
1975 Volume 234 Pages
45-49
Published: August 30, 1975
Released on J-STAGE: August 22, 2017
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In the preceding report (Part II〜IV), the author derived the formulae for the buckling problems of flat shells in bending state, by means of Galerkin's method which was applied not only for the equilibrium equation but also for the compatibility equation. In this report, for proving the applicability of the above method to the compatibility equation as well as to the equilibrium equation, the author dicussed the relations among the Galerkin's method, i.e. direct method of variational problems, Euler equations and also the functionals for the compatibility equation and the equilibrium equation of the flat shells.
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SABURO HORIUCHI, AI SEKIZAWA, YOSABURO MORISHITA, HIROYUKI MIZUNO
Article type: Article
1975 Volume 234 Pages
51-60
Published: August 30, 1975
Released on J-STAGE: August 22, 2017
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This Earthquake broke out on May 9 in 1974 at 8 : 33 a.m. and caused large damage to the district of Minami Izu cho. By the interview-method at every household in each district of Minami Izu cho, we investigated human behaviours in the midst of and sometime after the earthquake motion, and the factors affecting them. By these results, the relationships among human behaviours and those factors were obtained. The contents are as follows. 1. Introduction 2. Purpourses of this Study 3. Outlines of survey 4. Results 5. Summery
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YASUO NISHI, TAKEO KOZIMA, HIROSHI NAKAMURA, SYUNTARO HIGA, SYUNZI OKA ...
Article type: Article
1975 Volume 234 Pages
61-67
Published: August 30, 1975
Released on J-STAGE: August 22, 2017
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In this paper state the authors their studies on the analysis of the the generating lines of mirror surfaces which give the reflected images in the form of Equi-Solid Angle Representation or Equi-Distance Projection to incident rays from a pin hole. They solved the differential equations of the generating lines of the mirror surfaces numerically in successive method and have got four curves of generating lines of the mirrors. The authors have an intention of making trial pin hole cameras with some of refecting mirrors whose generating lines are defined here.
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ICHIRO ISHIGURO
Article type: Article
1975 Volume 234 Pages
69-79
Published: August 30, 1975
Released on J-STAGE: August 22, 2017
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This study developed a new method of calculating air pollution on the traffic road. Usually these kinds of mettods have calculated the state of pollution on the road or its neighborhood by regarding the traffic road as linear continuous source or rectangular column one. Also regarded the pollution media diffused by natural air in the intersecting direction. Therefore these methods had a fault that the solution for air pollution in windless was to infinity. In this study that fault is removed. Then this study tries to calculate the diffusing state regarding each car as moving point source. For this end new two notions "Model of wake" and "Model of Equal space in pollution" are introduced. "Model of wake" is used to caluclate the pollution backword when one car ran. "Model of Equal space" is used to calculate the pollution around the road when cars ran in equal space line. This is calculated for additioning each car's pollution in "Model of wake". In this study Bosanquet-Peason system is used to calculate "Model of wake" because his system is good for no dimention. For the reason mentioned above this method in this study can calculate the pollution around the road in windless. Of cource it can when it is blowing. By way of example the solutions are given in the case of windless and 1m/s, 5m/s and 7m/s in the intersecting direction. On the other hand pollution around the road was measured. For examinating propriety of this method these measured values are contrasted with thoretical ones.
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FUMIKO SUGAWARA, SUSUMU YOSHIZAWA
Article type: Article
1975 Volume 234 Pages
81-87
Published: August 30, 1975
Released on J-STAGE: August 22, 2017
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TAKASHI SHODA, SHUZO MURAKAMI, NOBUYUKI KOBAYASHI
Article type: Article
1975 Volume 234 Pages
89-100
Published: August 30, 1975
Released on J-STAGE: August 22, 2017
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Characteristics of turbulence in half-enclosed spaces are investigated in connection with the configuration of the spaces and the representative air velocity. Half-enclosed spaces denote here such spaces as rooms, courtyards, balconies and semiunderground parking spaces etc. which are enclosed with walls, floors and ceilings and partly opened to the outside atmosphere. The air flow in many types of the half-enclosed space are measured using the super-sonic anemometers and the statistical values of turbulence in these spaces are calculated. The relation between these statistical values and the representative air velocity U_0 is shown as below. 1) Turbulence velocity √<u^^-_i^2>=C・U_0…(1) 2) Characteristic time length of turbulence T_i〜U^^-_0…(2) 3) Turbulencecale l_i=constant…(3) 4) Eddy diffusivity K_i〜U^^-_0…(4) Here U^^-_0 : the outlet air velocity into the room or the outside wind velocity C : numerical factor. The numerical factor C in equation (1) is expressed as, C=0.026γ^<0.28>. Here γ is the open-space ratio of the half-enclosed space, defined as the ratio of the total area of openings in the half-enclosed space to the total inside area of the space. The relation between l_i and the space scale L_i is shown as below, l_i=0.07L_i.…(5) As K_i=√<u^^-_i^2>・l_i, the value of K_i can be estimated from equation (1), (5). Namely K_i can be known from U^^-_0 and L_i.
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TAKASHI SHODA, SHUZO MURAKAMI, KOICHI KEDA, KIYOSHI UEHARA
Article type: Article
1975 Volume 234 Pages
101-113
Published: August 30, 1975
Released on J-STAGE: August 22, 2017
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In recent few years, it has become well known that a strong wind blows around a high rise building. Now it is an important problem, for designers, users of the building and inhabitants near the building, how to estimate the speed and the area of the strong wind around the building and how to protect pedestrians and shops from the strong wind. The strong wind which occurs around a single building was studied in the preceding report, Part I. In this report, Part II, it is investigated how the strong wind occurs around arrangements made up of several buildings and how the strong wind can be sheltered by a windbreak, using the wind tunnel technique. The arrangements are made up of simple block-shaped models which are same as that used in Part I. The types of the arrangement are the end to end arrangement, the exploded L-shaped arrangement, the face to face arrangement, the exploded U-shaped arrangement and the exploded H-shaped arrangement. In the case of the end to end arrangement, the strong wind occurs in the opening of the models, which is similar to the strong wind through the pilotis of a single block-shaped model. When the opening is narrow, the wind increasing ratio becomes 1.6. This value is much lager than value 1.2〜1.3 which occurs at the corner of the single model. In all types of the arrangement, the strong wind occurs in the opening of models and at the corner of models. But the increasing ratio in the opening is a little larger than that at the corner.
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MAKOTO ITOH
Article type: Article
1975 Volume 234 Pages
115-124
Published: August 30, 1975
Released on J-STAGE: August 22, 2017
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In planning hospitals, one of the important procedures is to assess the total floor area and to decide the proportion of space of various departments composing a hospital. For reference to architects, I have tried to analise the use of space in recent hospital buildings. Thirty-one examples including general, specialized and mental hospitals were chosen for this study. The total floor area per bed was found to vary from just under 40m^2 to over 45m^2 in general hospitals. The relative amount of space occupied by each department of general hospital was as follows : (1) Ward : about 40% (2) Outpatient department : 10〜15% (3) Adjunct diagnostic and treatment facilities : about 20% (4) Administration department : 7〜11% (5) Service facilities : 15〜20%
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HITOSHI WATANABE
Article type: Article
1975 Volume 234 Pages
125-129
Published: August 30, 1975
Released on J-STAGE: August 22, 2017
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The purpose of this paper is to introduce a new mathematical theory, Automata, which is very inflluential for architectural or urban planners, and to explain some examples of simulation in which Automata theory is applied to Man-Space system. In our past studies, we have solved the problem of Man-Space system by quantifying the human flow and distribution (stock). Now, we introduce the idea of Automaton which can express the human psychological behavior in architectural space and we can describe Man-Space system by three conceptions "flow", "stock", "state". The outline of this paper are as follows, (i) Introduction of the idea of Automaton (ii) Method of the application to architectural planning (iii) Examples of the simulation with Automaton model
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MITSUOMT YAMAGUCHI
Article type: Article
1975 Volume 234 Pages
131-137
Published: August 30, 1975
Released on J-STAGE: August 22, 2017
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This paper describes a progress of Europeanization in houses build at Dejima in the later of the 18th century, especially the inside and outside of Capitao house by studying the diaries and the sketches of some artists visited Dejima at that time.
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