摘要
提出了钢管混凝土边框内藏分块钢板组合双肢剪力墙,为研究分块钢板布置型式对其抗震性能的影响,进行了3个1/15缩尺的不同分块钢板布置型式的双肢剪力墙试件的模拟地震振动台比较试验,试件1为钢管混凝土边框双肢剪力墙,试件2为钢管混凝土边框内藏分块钢板双肢剪力墙,试件3为钢管混凝土边框内藏整块钢板双肢剪力墙。台面输入EL-Centro地震波。试验研究了不同峰值加速度输入下试件的加速度、位移地震反应,分析了钢管、钢板、混凝土的损伤演化过程以及双肢墙震后自振频率衰减特征。结果表明:内藏分块钢板双肢剪力墙与无内藏钢板双肢剪力墙相比,抗侧刚度大,承载力高,性能退化慢;与内藏整块钢板双肢剪力墙相比,抗侧刚度略小,承载力略低,性能退化慢,延性性能好。钢管混凝土边框组合双肢剪力墙可用于抗震设计。
A coupled shear wall with concealed partitioned steel plates and concrete-filled steel tube columns was proposed. In order to investigate the effect of the arrangement of concealed partitioned steel plates to the seismic performance of the coupled shear walls, three 1/15 scaled models with different arrangements of concealed parti- tioned steel plates were tested on the shaking table, including one coupled shear wall with concrete-filled steel tube columns, one with concealed partitioned steel plates and concrete-filled steel tube columns and one with concealed integral steel plates and concrete-filled steel tube columns. The E1 Centro seismic waves were inputted during the process. The experiment studied the reaction of acceleration and displacement of the walls under different peak ac- celeration, the damage evolvement process of the steel tube, steel plates and concrete, as well as the attenuation features of naturalvibration frequencies. The test results showed that the lateral stiffness, load bearing capacity and ductility of the one without the steel plates, and its ductility was better than the one with integral steel plates, while the lateral stiffness and the bearing capacity of the former was not as big as the latter. The coupled shear wall with concealed partitioned steel plates and concrete-filled steel tube columns can be applied in the seismic design for practical projects.
出处
《地震工程与工程振动》
CSCD
北大核心
2017年第1期7-15,共9页
Earthquake Engineering and Engineering Dynamics
基金
国家自然科学基金项目(51478020)~~
关键词
钢管混凝土边框
内藏分块钢板
双肢剪力墙
抗震性能
振动台试验
concrete-filled steel tube columns
concealed partitioned steel plates
coupled shear wall
seismic performance
shaking table test
