This paper presents recent measurement technology on concrete structure and examples of the measurement. Transducers such as crack gauge, strain gauge and so on are explained on method of the usage, electronic system and how to estimate data. Two measurement examples are introduced. One example is a measurement of in-plane loading test of concrete plates. Another example is field observation on double cylindrical concrete caisson during wave condition.

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This report emphasizes on the construction and structural design of highrise apartment buildings more than 60m high of reinforced concrete, which have widely been popular among leading construction and design firms in Japan and whose max. number of stories has exceeded 40. Under the same theme a report was described 5 years ago by Prof. Aoyama and this one is written according to the same items in it. This report summarizes the state of the art of structural planning in plan and elevation based on all the buildings designed up to now, structural materials and construction planning including quality control practice of high strength concrete. It also reports on key points of earthquake resistant design of highrise reinforced concrete building in Japan, nonlinear earthquake response analysis, confirmation by structural testing and problems in transmission of the technical know how between departments of a firm.

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The serious shortage of the construction workers and materials has made it difficult for a constructor to keep a contract-term. Through this construction, we confirmed that Precast PC method was effective to shorten the construction-term. Since Precast PC is factory-made, it was reliable, equal in quality. It was flexible to meet with the wider span-length and the higher story-height. Owing to its smooth surface, it served both as a structure and an exterior. Also the simple and rapid way of its structural connection (pocket-type footing) was advantageous. We needed relatively smaller number of workers at the site.

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The most important feature of PS Type Cryogenic Tank is that an independent dike, which is mandatory under the existing regulations in case of a conventional metal double wall cryogenic tank, is not required as the outer PS tank is approved by the Authority to have the same function as an independent dike, as well as the concept of double containment in EEMUA code has been adopted in the tank design. Another features of this tank are the advanced engineering concept and construction method adopted in execution of this project, such as helical construction method used in erection of shell plates of inner tank and seal metal on the inner surface of PC outer tank. Highlights of this Article are “Structures of PS Type Cryogenic Tanks” and “Seal Metal on the Inner Surface of PC Outer Tank.”

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This paper describes the seismic design and the construction by slipform process of the high-rise, unique smokestack with tapered legs around hexagonal shaft. Concerning to the seismic design, to take account of the behavior of the piles in the ground, Penzien model is used as an analysis model, by which the interaction among the structure, piles and ground on dynamic response can be evaluated. As far the construction, to apply the slipform process to the complex shaped structure, the automatic operation system is developed, which leads this project to success.

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The cantilever type rock shed has been developed as the most suitable structure constructing in the area where road width is narrow, slope of the mountain side steep and road margin little, and thus construction of foundation on the mountain side is impossible, also slope of the valley side is steep or the ground at the side is weak, and thus the construction of foundation is difficult. Furthermore, at the construction site, the construction period can be shorten, the control of traffic is little, and thus the economical construction is possible because the excavation at the dangerous slopes becomes minimum and the precast concrete members made in a factory are transported and constructed. This type rock shed was constructed in Tokushima prefecture at first in Japan. The construction started in October 1989 and completed in February 1990. This construction was authorized as the technical application project of the Ministry of Construction. This report describes the design and the construction of the cantilever type rock shed, and the results of the static and dynamic tests executed before the design and the construction.

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