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《Journal of Disaster Prevention and Mitigation Engineering》 2012-01
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Experimental Study on Bearing Behavior of Prestressed Steel Reinforced Concrete Simply Supported Beam under Fire and Vertical Load

FU Chuan-guo,WANG Yu-zhuo,YU De-shuai,HAN Jian (School of Civil Engineering,Shandong Jianzhu University; Shandong Provincial Key Laboratory of Appraisal and Retrofitting in Building Structures,Jinan 250101,China)  
Fire resistance of two full-scale PSRC simply supported beams was tested under high temperature and vertical load.The distribution of temperature field,vertical deformation characteristics and bearing performance deterioration process were obtained in the experiment,and the relationship between prepressure caused by prestressed bar and heating time was measured during the heating process by setting a pressure sensor at the beam end.The result shows that pre-pressure caused by prestressed bar is sensitive to high temperature,and it is reduced to half of its initial value after 100 minutes in ISO834 standard fire. At the end of the test,lateral bending deformation appeares in specimen F-PSRCB13.
【Fund】: 国家自然科学基金项目(50978158);; 山东省高等学校科技计划项目(J11LE06)资助
【CateGory Index】: TU398.9
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