高强混凝土剪力墙抗震性能及其性能指标试验研究  

Experimental study on seismic behavior and performance indexes of high-strength concrete shear walls

作　　者：梁兴文[1] 辛力[2] 邓明科[1] 方林[1] 张兴虎[1] 

机构地区：[1]西安建筑科技大学,陕西西安710055 [2]中国建筑西北设计研究院有限公司,陕西西安710003

出　　处：《土木工程学报》2010年第11期37-45,共9页China Civil Engineering Journal

基　　金：国家自然科学基金(50678146;50908187;51078305);高等学校博士学科点专项科研基金(20070703002);陕西省重点学科建设专项资金(E01001;E01003)

摘　　要：为了改进高强混凝土(HSC)剪力墙的变形能力,按变形能力设计方法设计5个剪跨比分别为1.5和1.0的剪力墙试件,进行拟静力试验。根据试验结果,研究中高、低矮HSC剪力墙的破坏形态、破坏机理及变形性能。结果表明,分段约束箍筋对提高弯曲型剪力墙的变形能力是有效的;剪力墙变形能力设计方法在一定程度上是可靠的;剪力墙塑性铰区转角与其破坏程度有较好的相关性。根据墙体不同阶段的破坏程度,将剪力墙结构的性能划分为"使用良好、保证人身安全、防止倒塌"三个水平,提出用层间位移角和塑性铰区转角共同作为剪力墙结构的性能控制指标,并给出了三性能水平的建议值。将该HSC剪力墙与已有的普通混凝土剪力墙的试验结果进行比较,表明只要采取合理有效的抗震措施,并按强剪弱弯原则进行截面承载力设计,HSC剪力墙的抗震性能能满足设计要求。In order to improve the deformation capacity of high-strength concrete （HSC） shear walls, 5 specimens of HSC shear walls with shear span ratios of 1.5 and 1.0 were designed and put in quasi-static tests based on the deformability design method for shear walls. Based on the experimental results, the failure pattern, failure mechanism and deformability of medium-high and low-rise shear walls were studied. It is shown that the new piecewise confining boundary element in plastic hinge regions is effective in improving the deformation capacity of shear walls. The deformability design method for shear walls is reliable to a certain extent. The rotation of plastic hinge region is well related to the damage level of shear walls. According to the damage level, the performance of a shear wall structure is divided into three levels, i.e., serviceability, life-safety and collapse-prevention. The storey drift ratio and the rotation of plastic hinge regions can both be used as the indexes for controlling the performance of shear wall structures, and values for each performance level are provided. Behaviors of HSC and normal-strength concrete shear walls were compared. It is shown that the seismic behavior of HSC shear walls can satisfy performance demand provided that reasonable and effective seismic detailing methods are adopted and strength of shear wall sections are designed according to the principle of strong shear-weak flexural strength.

关 键 词：HSC剪力墙 性能指标 分段约束配箍 塑性铰区转角 层间位移角 

分 类 号：TU398.2[建筑科学—结构工程] TU317.1