赵军 赵齐 陈纪伟

摘要：通过对1片钢筋混凝土剪力墙和4片配有碳纤维增强聚合物（CFRP）筋的剪力墙的低周反复荷载试验，在分析试验中测得的裂缝宽度、裂缝的发展和分布形态、侧向变形的基础上，研究了在钢筋混凝土剪力墙的适当位置部分或全部配置CFRP筋对剪力墙的残余裂缝和残余变形等自复位性能的影响规律。研究结果表明：与普通钢筋混凝土剪力墙相比，配有CFRP筋的剪力墙的开裂荷载较低，裂缝较多，裂缝分布分布范围较广，墙体的最大裂缝宽度、残余裂缝宽度和侧向残余变形分别降低了60%、70%和90%，说明在剪力墙中合理配置CFRP筋能使剪力墙具有优异的自复位性能。

关键词：剪力墙；碳纤维增强聚合物筋；自复位；裂缝宽度；残余裂缝；残余变形

中图分类号：TU352

文献标志码：A 文章编号：1674-4764（2016）03-0018-07

Abstract：One shear wall totally reinforced with steel bars and the other four shear walls partly or totally reinforced by CFRP bars in the longitudinal direction were tested under the reversed cyclic loading. Based on the analysis of the crack width， crack distribution and lateral deformation of the five shear walls， the influence rules of the reinforcement methods of partly or totally reinforced by CFRP bars on the self-centering performance such as residual crack and residual deformation of reinforced concrete shear walls were researched. The results showed that the crack loads of the shear walls with CFRP bars were lower than that of reinforced concrete shear wall. The shear walls with CFRP bars had more cracks and more extensive crack distribution. The maximum crack widths， residual crack widths and residual deformations decreased by 60%， 70%， and 90%， respectively， which indicated the shear walls reinforced by CFRP bars had excellent self-centering performance.

Keywords：shear wall；CFRP bar；self-centering；crack width；residual crack；residual deformation

钢筋混凝土剪力墙是高层建筑中常用的抗侧力构件，其力学性能对整体结构的抗震性能至关重要。目前，中国高层建筑结构抗震设计遵循“小震不坏、中震可修、大震不倒”的原则，由于地震作用具有明显的不确定性，结构在地震作用下的受力情况也比较复杂，结构的抗震设计仍然不够完善。按照现行设计规范设计的房屋建筑在遭遇罕遇地震后虽然主体结构不会发生倒塌造成大量的人员伤亡，但结构在强烈的地震作用下必然会产生一定程度的损伤[1-2]。长期以来，中国在剪力墙结构设计时，要求剪力墙具有良好的变形能力，使结构在遭受地震作用时，通过产生足够的变形来提高其抗震能力。……