装配式部分包覆钢-混凝土组合剪力墙受弯承载力计算
Calculation on bending capacity of prefabricated partially encased steel-concrete composite shear wall
赫约西 1杨宇焜 1徐国军 1蒋路 1黄亚男2
作者信息
- 1. 浙江绿筑集成科技有限公司,上海 201199
- 2. 同济大学土木工程学院,上海 200092
- 折叠
摘要
为研究装配式部分包覆钢-混凝土组合短肢剪力墙的受弯承载力和抗震性能,设计制作了5 片短肢剪力墙.通过拟静力试验,分析轴压比、翼缘板厚度、混凝土强度和型钢强度对试件破坏形态、滞回性能、受弯承载力、变形能力、刚度退化和耗能能力的影响.试验结果表明:短肢剪力墙表现为典型的压弯破坏;轴压比由 0.4 增大至 0.6,试件的承载力及延性均降低;翼缘板厚度的变化对试件的承载力和延性影响较小;随着混凝土和型钢强度的增大,试件的承载力随之增大;罕见地震作用下,试件表现出良好的抗震性能,提出部分包覆钢-混凝土组合剪力墙受弯承载力计算公式,计算结果与试验值吻合度较高.
Abstract
To study the bending capacity and seismic performance of partially encased steel-concrete composite shear walls,five short-leg shear walls were designed.The influence of the axial compression ratios,flange plate thickness,concrete and section steel strength on the failure modes,hysteretic performance,bending capacity,deformation capacity,stiffness degradation and energy dissipation capacity of the specimens were studied by quasi-static tests.The results show that the short-leg shear wall showed typical compression-bending failure.When the axial compression ratio increases from 0.4 to 0.6,the bearing capacity and ductility are all reduced.The change of flange plate thickness has little effect on the bearing capacity and ductility.With the increase of the strength of concrete and section steel,the bearing capacity of the specimen increases accordingly.Under rare earthquakes,the specimen shows good seismic performance.Caculation formulas for the bending capacity of the partially encased steel-concrete composite shear walls were suggested,and the calculation results agree well with the test results.
关键词
装配式/部分包覆钢-混凝土组合剪力墙/短肢剪力墙/拟静力试验/受弯承载力/抗震性能Key words
prefabricated/partially encased steel-concrete composite shear wall/short-leg shear wall/pseudo-static test/bending capacity/seismic performance引用本文复制引用
基金项目
国家重点研发计划(2017YFC0703805)
出版年
2024
NETL
NSTL
万方数据