低周反复荷载下自控耗能UPPC框架钢筋应力变化  

Variation of reinforcement stress in UPPC frame with self-control energy consumption under low cycle repetitive load test

作　　者：解登峰 李宁[1] 李延和[1] 王璐 XIE Dengfeng;LI Ning1;LI Yanhe;WANG Lu(College of Civil Engineering,Nanjing Tech University,Nanjing 211816,China;International engineering design Co.Ltd.Nanjing Zhongzhe,Nanjing 210019,China)

机构地区：[1]南京工业大学土木工程学院,江苏南京211816 [2]南京中哲国际工程设计有限公司,江苏南京210019

出　　处：《苏州科技大学学报（工程技术版）》2018年第1期46-50,共5页Journal of Suzhou University of Science and Technology（Engineering and Technology Edition）

摘　　要：通过单层单跨普通UPPC框架与自控耗能UPPC框架的低周反复荷载试验,对比分析两榀UPPC框架中普通钢筋的应变变化及预应力钢绞线的应力变化,研究两榀框架的成铰顺序。研究表明:自控耗能UPPC框架在自控元件发挥作用后预应力钢绞线放松明显;普通UPPC框架柱端塑性铰形成时机早于梁端塑性铰,自控耗能UPPC框架梁端塑性铰形成时机早于柱端塑性铰,自控耗能UPPC框架能够形成梁铰机制。Based on the low reversed cyclic loading experiment of one single-layer single-span common UPPC frame with one self-control energy dissipation UPPC frame,the paper studies the stress change of prestressed steel,the strain of rebar and order change of plastic hinges.The result shows that when the self-control components work,the stress of prestressed steel lowers obviously;in common UPPC frame,the plastic hinges of column-end form early than the plastic hinges of beam-end;in self-control energy dissipation UPPC frame,the plastic hinges of beam-end form early than the plastic hinges of column-end;and the self-control energy dissipation UPPC frame can form the beam hinge energy dissipation mechanism.

关 键 词：UPPC框架 自控耗能 低周反复荷载试验 钢筋应力变化 预应力筋 

分 类 号：TU378.4[建筑科学—结构工程]