自控耗能UPPC框架抗震性能试验  

Experiment on Seismic Performance of Self-control Energy Dissipation UPPC Frames

作　　者：钱程 李延和[1] 解登峰 李宁 文孝迎 QIAN Cheng;LI Yan-he;XIE Deng-feng;LI Ning;WEN Xiao-ying(College of Civil Engineering,Nanjing Tech University,Nanjing 211816,China;Risesun Real Estate Development Co Ltd,Jinan 250000,China;Xuzhou Country Garden Real Estate Development Co Ltd,Xuzhou 221000,China)

机构地区：[1]南京工业大学土木工程学院,江苏南京211816 [2]荣盛房地产开发有限公司,山东济南250000 [3]徐州市碧桂园房地产开发有限公司,江苏徐州221000

出　　处：《土木工程与管理学报》2019年第6期178-185,共8页Journal of Civil Engineering and Management

摘　　要：本文对三榀单层双跨无粘结部分预应力混凝土(UPPC)框架开展了低周往复荷载试验,其中一榀为普通无粘结部分预应力混凝土框架,其余两榀为自控耗能无粘结部分预应力混凝土框架。通过对比试验研究了自控耗能UPPC框架的抗震性能。自控耗能UPPC框架梁中布置了自控耗能元件,自控耗能元件可以提高UPPC框架的耗能能力,且在罕遇地震下易形成梁铰耗能机制,不同预应力释放程度是本文主要研究参数。试验结果表明:自控耗能UPPC框架是梁铰破坏机制;与普通UPPC框架相比,自控耗能UPPC框架有更好的延性与耗能能力,且随着预应力释放程度的增加而提高;自控耗能UPPC框架的承载力略低于普通UPPC框架。自控耗能UPPC框架不仅有更好的抗震性能,而且在震后修复后可以继续使用。In this paper, three single-layer double span unbonded partially prestressed concrete(UPPC) frames are tested under low-cycle repeated loading, of which two frames are self-control energy dissipation UPPC frame and the other is common UPPC frame. The seismic performance of the UPPC frame with self-control energy consumption is studied by comparative test. The self-control energy dissipators are arranged in the UPPC frame beam, which can improve the energy consumption capacity of the UPPC frame, and it is easy to form the beam hinge energy consumption mechanism under the rare earthquake. Different degree of prestress release is the main research parameter in this paper. The test results show that the failure mechanism of self-control energy dissipation UPPC frame is beam hinge. Compared with the ordinary UPPC frame, the self-control energy consumption UPPC frame has better ductility and energy consumption capacity, which increases with the increase of prestress release degree. The bearing capacity of self-control energy consumption UPPC frame is slightly lower than that of ordinary UPPC frame. Self-control energy consumption UPPC frame not only has better seismic performance, but also can continue to be used after repair in post-earthquake.

关 键 词：自控耗能 无粘结部分预应力 耗能元件 往复荷载 抗震性能 

分 类 号：TU375.4[建筑科学—结构工程]