外置摩擦阻尼器的新型自复位约束砌体墙拟静力试验研究  

Pseudo-static tests of a new type of self-centering confined masonry wall with external friction dampers

作　　者：胡晓斌[1] 李文霞[2] 熊予 郝彤[1] 

机构地区：[1]武汉大学土木建筑工程学院,湖北武汉430072 [2]山东电力工程咨询院有限公司,山东济南250013 [3]中南建筑设计研究院股份有限公司,湖北武汉430072

出　　处：《地震工程与工程振动》2016年第2期207-214,共8页Earthquake Engineering and Engineering Dynamics

基　　金：国家自然科学基金项目(51208386)~~

摘　　要：研制了一种同时布置体内无黏结预应力筋和外置摩擦阻尼器的新型自复位约束砌体墙,并通过拟静力试验研究了该新型自复位墙在低周反复荷载作用下的滞回性能。结果表明:该新型自复位墙滞回曲线呈"旗形",在较大位移下未出现明显的损伤,且在再加载及卸载过程中没有明显的刚度退化;随着预应力筋初始预应力的增加,墙体的自复位性能增强,但其耗能能力会降低;随着摩擦阻尼器摩擦力的增大,墙体的耗能能力增强,但可能会产生少量的残余变形。A new type of self-centering confined masonry wall with internal unbonded prestressed tendons and external friction dampers is developed in this paper. The pseudo-static tests of the self-centering wall under cyclic loading were performed to investigate its hysteresis behavior. It is indicated that the hysteresis curve of the self-centering wall is characterized by flag shape. The wall exhibits no obvious damage under large displacement and experiences no significant strength and stiffness degradation during the reloading and unloading process. With the increase of the initial prestress in the tendons,the self-centering performance of the wall is enhanced but its energy dissipation capacity is impaired. With the increase of the friction force of the friction dampers,the energy dissipation capacity of the wall is improved but some residual displacement likely occurs.

关 键 词：新型自复位约束砌体墙 无黏结预应力筋 外置摩擦阻尼器 拟静力试验 滞回性能 

分 类 号：TU352[建筑科学—结构工程] P315.91[天文地球—地震学]