无粘结筋极限应力增量计算公式对比分析  

Comparison of formulas for calculating the ultimate stress increment in unbonded tendons

作　　者：郑文忠[1] 王晓东[1] 王英[1] 

机构地区：[1]哈尔滨工业大学土木工程学院,哈尔滨150090

出　　处：《哈尔滨工业大学学报》2009年第10期7-13,共7页Journal of Harbin Institute of Technology

基　　金：国家自然科学基金资助项目(50178026);教育部新世纪优秀人才支持计划资助项目(教科司[2005]290号)

摘　　要：为客观认识各公式的合理性,对380根简支梁板和连续梁板进行了仿真试验,同时搜集整理了中国建筑科学研究院所做的35根简支梁的试验结果,将国内外预应力混凝土梁板中无粘结筋极限应力增量公式计算值与这415根试验梁板的实测结果进行对比分析,结果表明公式更具合理性.In order to verify the rationality of formulas in literatures, which were used for calculating the ulti- mate stress increment in unbonded tendons in prestressed concrete beams, simulations on 380 simple supported beams and continuous beams were completed; and the results of 35 simple supported beams obtained by China Academy of Building Research were collected. Then the results of the calculation formulas at home and abroad were compared with the test results of these 415 beams and slabs. It is indicated that the formulas proposed by the author are more rational than the others.

关 键 词：预应力混凝土 梁板 无粘结筋 极限应力 增量 

分 类 号：TU378.1[建筑科学—结构工程]