T形截面钢骨混凝土异形柱框架抗震性能拟动力试验  

Pseudo-dynamic Test on Seismic Behavior of Frame with T-shaped SRC Columns

作　　者：杨涛[1] 张喜德[1] 钟海牛 邓志恒[1] 

机构地区：[1]广西大学土木建筑工程学院广西防灾与工程安全重点实验室,广西南宁530004

出　　处：《中南大学学报（自然科学版）》2015年第6期2171-2177,共7页Journal of Central South University:Science and Technology

基　　金：国家自然科学基金资助项目(51268005);广西自然科学基金资助项目(2014GXNSFBA118258)~~

摘　　要：制作一榀1/2比例的单跨两层的框架模型,框架由钢筋混凝土（RC）梁和T形截面钢骨混凝土（SRC）异形柱组成。采用拟动力试验方法,通过对框架施加不同峰值加速度的El Centro地震波,研究框架模型的地震响应、耗能等抗震性能。试验结果表明：地震引起的结构损伤主要集中于钢筋混凝土框架梁端部;楼盖处的动力系数介于1.08~2.25之间;框架最大层间位移角满足规范限值的要求;在经历峰值加速度为1 000 cm/s2的地震波作用后,框架抗侧刚度降低了约6%;SRC异形柱框架具有良好的抗震性能,其具备应用于高烈度地震区的可行性。A half scale single-bay and two-story frame model was made, which was composed of reinforced concrete （RC） beams and T-shaped steel reinforced concrete （SRC） columns. The pseudo-dynamic test method was used to investigate seismic behaviors of the frame such as seismic responses and energy dissipation, and E1 centro earthquake waves with different peak acceleration were applied on the frame in the test. The experimental results indicate that structural damage due to earthquake is mainly located at the beam ends, and dynamic coefficients at the floors lie between 1.08 and 2.25. Additionalloy, the maximum inter-story drift angles of the frame meet the limitation requirement specified by Chinese codes. The lateral stiffness of the frame reduces by 6% after it is subjected to the earthquake wave with peak acceleration 1 000 cm/s2. Frames with SRC special-shaped columns possess good seismic performance and they are feasible to be applied in high intensity earthquake zone.

关 键 词：钢骨混凝土 异形柱 框架 抗震性能 拟动力试验 

分 类 号：U398.2[交通运输工程] TU317.1[建筑科学—结构工程]