无粘结预应力装配梁试验研究  

EXPERIMENTAL RESEARCH ON UNBONDED POST-TENSIONED PRECAST CONCRETE BEAMS

作　　者：王冬雁[1] 李振宝[1] 杭英 

机构地区：[1]北京工业大学工程抗震与结构诊治北京市重点试验室,北京100022 [2]上海申英基建咨询有限公司,上海201103

出　　处：《工业建筑》2008年第2期31-34,58,共5页Industrial Construction

基　　金：国家自然科学基金资助项目(50678005);教育部高等学校博士学科点专项科研基金资助项目(20050005009)

摘　　要：对4个无粘结预应力装配梁试件进行低周反复加载试验,考虑预应力筋偏心位置、锚固长度、初始预应力度等参数变化。结果表明:无粘结预应力装配梁具有令人满意的抗震特性,与现浇混凝土结构相比虽然耗能低,但延性好自恢复能力强(残余变形小),较非线性大位移下试件破坏程度轻。分析了装配梁的恢复力特性、延性、耗能等性能与试验参数的关系,为无粘结预应力装配结构在地震地区的使用提供参考。It is researched 4 unbonded post-tensioned precast concrete beams under reversed cyclic loading. In this study there arc some parameters that are taken into account, such as PT eccentric position, PT anchor length and initial posttensioning load. Experiment shows that these beams used unbonded post-tensioned tendon haye desirable seismic characteristics such as a self-centering capability and an ability to undergo large nonlinear displacements with little damage. Some seismic behaviors such as resilience, ductility, energy dissipation etc arc analyzed. The objective of this test is to develop guidelines for precast structure in regions of earthquake zone.

关 键 词：后张无粘结预应力装配梁 低周反复加载 自恢复能力 耗能 抗震性能 

分 类 号：TU378.2[建筑科学—结构工程]