摘要
国内核工程双钢板-混凝土组合剪力墙的研究起步较晚,对组合剪力墙的面内受剪性能研究较少。文中通过4片中低剪跨比核工程双钢板-混凝土剪力墙试件的面内拟静力试验,研究其在恒定轴压力和面内低周水平往复荷载作用下的破坏模式、受剪承载力、变形能力、延性、刚度和耗能能力等指标,分析了距厚比、剪跨比等因素对双钢板-混凝土组合剪力墙受剪性能的影响。试验结果表明:试件的破坏模式均为剪切破坏;距厚比对组合剪力墙钢板局部屈曲和试件变形能力、延性有较大影响,但对承载力影响并不显著;剪跨比越大,组合剪力墙的受剪承载力越小,但变形能力和延性越大;试件的累积耗能随加载循环次数呈指数型增长,抗震性能良好。
Domestic study on double-skin-composite shear walls in nuclear engineering starts late and studies about shear behavior are relatively few.In this article,quasi-static tests on four medium and low shear-span ratio double-skin-composite shear wall specimens in nuclear engineering were conducted,in order to analyze the failure modes,shear bearing capacity,deformation performance,ductility,stiffness and energy dissipation capacity of the specimens under constant axial loads and low cyclic lateral loads.The effects of distance to thickness ratio and shear-span ratio on shear performance of specimens were studied.The following conclusions are drawn from the tests.The failure modes of the four medium and low shear-span ratio specimens all conform to the characteristics of shear failure modes.The distance to thickness ratio has a distinct influence on shear performance of double-skin-composite shear walls.Local buckling is more possible to occur earlier and the capacity of deformation is lower when the distance to thickness ratio increases.The deformation capacity and ductility are more adequate and the hysteretic behavior is more stable with shear-span ratio increasing,while the shear bearing capacity becomes lower.The cumulative energy dissipation increases exponentially with the number of loading cycles,showing good seismic performance.
作者
刘晶波
王冬亮
王宗纲
王菲
LIU Jingbo;WANG Dongliang;WANG Zonggang;WANG Fei(The Key Laboratory of Civil Engineering Safety and Durability of China Ministry of Education,Department of Civil Engineering,Tsinghua University,Beijing 100084,China)
出处
《地震工程与工程振动》
CSCD
北大核心
2019年第5期19-27,共9页
Earthquake Engineering and Engineering Dynamics
基金
国家重点研发计划资助项目(2016YFC1402800)~~
