文档介绍：第 27卷第 2期结构工程师 .N
2011年 4月 Structural Engineers A pr. 2011
钢筋混凝土柱低周反复荷载试验
加载方法的比较研究
胡峰张伟平顾祥林
(同济大学建筑工程系,上海 200092)
摘要为了研究加载方法对钢筋混凝土柱低周反复荷载试验结果的影响,在分析半柱试验中柱端约
束对试验结果影响的基础上,设计并制作了一个全柱试件和两个半柱试件,进行了低周反复荷载试验。
一个半柱试件采肩传统方法加载,竖向荷载通过球铰施加于柱顶;另一个半柱试件通过特制的销铰加载
装置使竖向荷载和水平荷裁的作用点交汇于销铰转动轴。通过比较全柱试件和半柱试件的滞回曲线、
骨架曲线、极限荷载和变形值、累计耗能量发现,当采用销铰加载时,其试验结果与整柱基本相符;而采
用传统加载方法时,由于柱端约束的存在,其承载能力明显偏大。因此,建议在半柱试件的低周反复荷
载试验中采用销铰施加荷载以便合理模拟全柱柱中的反弯点。
关键词钢筋混凝土柱,低周反复加载试验,加载方法
Comparative Study on Loading Methods ofLow Cycle
Cyclic Loading Test for Reinforced Concrete Columns
HU Feng ZHANG Weiping GU Xianglin
(Department of Building Engineering,Tongji(Department Building of University,Shanghai200092,China)
Abstract To investigate effects of loading methods on results oflow cycle cyclic loading test for reinforced
concrete columns,the current loading methods used in low cycle cyclic loading pared and the
influence ofend constraint on test results ofhalf-column specimens was analyzed. Low cycle cyclic loading
tests tests Were conducted on full—columna specimen and two half—column specimens with the same dimensions and
ofthe half columns was loaded by the traditiona1 method in which the vertica11cad was
applied on the top ofthe column through a sphere the other was loaded with a well-designed pin—
hinge device. paring hysteretic loops, enve