Seismic Design of Prestressed Concrete Frame Beams With the Large SpanChinese Full Text
RONG Wei-sheng(Institute of Earthquake Engineering,China Academy of Building Research,Beijing 100013,China;ZHANG Bai-tong(Jilin Petroleum Group Co.,Ltd.Survey and Design Institute,Songyuan 138000,Jilin,China)
Abstract: The process of seismic designs for prestressed concrete frame beams with the large span in the three projects is presented detailedly.The paper emphasizes that the seismic design for the prestressed concrete beams couldn’t only pay attention to that laid tendons at the beam produce the positive action to control the crack width and decrease the deflection,but would consider that overmany tendons bring that the relative neutral axis depth and the conversion ratio of the total longitudinal tensile reinforcement in sections at the beam ends couldn’t satisfy the requirements of the codes.Meantime,some specialities of the design for prestressed concrete beams with the large span are pointed out.
Keywords：
prestressed concrete; frame beam; large span; seismic design; relative neutral axis depth; conversion ratio of the total longitudinal tensile reinforcement;
- DOI：
10.13614/j.cnki.11-1962/tu.2010.07.019
- Series：
- Subject：
- Classification Code：
TU378
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