Abstract: This paper described the seismic performance of a concrete school building built in 1973, and numerous similar school buildings are being used even now in not only local area but also urban area in Japan.The Japanese building standard act was revised in 1981 considered non-linearity. However, a number of buildings built before 1981 are existing, seismic evaluations for those building have actively been assessed based on the seismic evaluation standard1) published by The Japan Building Disaster Prevention Association after especially 1995 Kobe Earthquake.In practical seismic evaluation works, it is relatively simple and easy to make models of general buildings, but unconventional frames are complex such as a staircase or a frame with level different girders.The flexible length of the column with a wall having an opening or level different girders are generally assumed as the inside measurement height. The modeling way would be simply, however, the seismic behavior of the unconventional

• Publication Date: 08-May-2016
• DOI: 10.15224/978-1-63248-096-5-16
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Abstract: Fiber reinforced polymer (FRP) bars have become progressively more used in civil engineering because of their excellent properties with respect to steel bars, mainly, their corrosion resistance. The designers generally adopt over-reinforced sections to avoid a sudden failure mode of FRP bars. Therefore, the overlap of the bars is omnipresent. However, under high temperature, the area of overlap may be regarded as a zone of radial stresses concentration generated by pressure caused by the thermal expansion of both bars. The aim of this study is to develop an analytical model allows to investigate the thermal stress and strain distributions in FRP bars and in concrete of beams reinforced with two overlapped FRP bars. By varying the ratio of concrete cover thickness to FRP bar diameter (c/db) from 1 to 3.2 and the temperature variation from 0°C to 60°C. The analytical model is based on the linear elasticity. Analytical results are compared with those obtained from numerical model using AD

• Publication Date: 08-May-2016
• DOI: 10.15224/978-1-63248-096-5-17
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