板缝内嵌无黏结钢板或钢棒的混凝土剪力墙滞回特性初探  

Preliminary study of hysteretic characteristics for concrete panels with unbonded steel plates or steel bars installed in the seam of panels

作　　者：丁玉坤[1] 张耀春[1] 

机构地区：[1]哈尔滨工业大学,黑龙江哈尔滨150090

出　　处：《土木工程学报》2010年第S1期381-384,共4页China Civil Engineering Journal

基　　金：中国博士后基金(20100471067);黑龙江省博士后基金(LBH-Z09195);国家科技支撑计划(2006BAJ01B02-01-04)

摘　　要：通过对水平往复荷载作用下,水平板缝内嵌入无黏结钢板或钢棒的新型混凝土剪力墙滞回特性的数值模拟分析,考察该种剪力墙的工作性能,以及构造措施对墙板滞回性能的影响。分析表明,钢板或钢棒与下部墙板间的无黏结处理,可避免墙板承受较大的竖向作用力。当上下墙板间发生大的相对水平侧移时,钢板或钢棒对下部墙板孔壁的冲剪导致墙板孔壁周围开裂。当在下部墙板的上边嵌入设有间断竖肋的水平钢板的加强件时,可大幅降低墙板冲剪开裂程度,嵌入上下墙板缝间的钢板或钢棒弯曲屈服后,该种墙板的滞回曲线饱满稳定,而无此加强件的剪力墙孔壁开裂较严重。The numerical simulation for the hysteretic characteristics of a new type concrete shear wall with unbonded steel plates or steel bars installed in the horizontal seam of panels has been carried out to examine the working behavior of the panels under the reversal horizontal loading,and the effect of constructional details on the hysteretic behavior of the panels was also investigated.The analysis shows that,large vertical forces applied on the panels are avoided by the unbonded measures between the steel plates(or steel bars)and lower panel.The holes of the lower panel are punched shear by the unbonded steel plates or steel bars when the large relative lateral deformation,between the upper and lower panels,develops,and therefore the crack of panel occurs around the holes.The punching shear cracks are greatly reduced when the edge reinforcement,which is the horizontal steel plate reinforced by discontinuous vertical steel ribs,is embedded in the upper edge of the lower panel,and the hysteretic curves of panels are plump and stable after the yielding of the unbonded steel plates(or steel bars).Whereas,the crack of panels without the edge reinforcement occurs severely.

关 键 词：混凝土剪力墙 无黏结 接触 冲剪 滞回特性 数值模拟 

分 类 号：TU398.2[建筑科学—结构工程]