后张无粘结预应力装配式短肢剪力墙拟静力试验研究  

Quasi-static Test Research of Unbonded Post-tensioned Assembly Short-limb Shear Wall

作　　者：孙巍巍[1] 孟少平[2] 蔡小宁[2] 

机构地区：[1]南京理工大学理学院,江苏南京210094 [2]东南大学RC/PC结构教育部重点实验室,江苏南京210096

出　　处：《南京理工大学学报》2011年第3期422-426,共5页Journal of Nanjing University of Science and Technology

基　　金：江苏省建设厅招标项目(JS2007ZB04);南京理工大学自主科研专项计划(2010ZYTS065)

摘　　要：为研究两种基于干性连接的新型后张无粘结装配式短肢剪力墙——直接装配式和混合装配式短肢墙——的抗震性能,进行了两榀八层新型短肢剪力墙拟静力试验。试验结果表明:合理设计的后张无粘结装配式短肢剪力墙,可以实现'强墙弱梁';连梁的裂缝及损伤均只集中出现在连梁与墙肢的结合部,其它部分基本保持弹性;后张无粘结预应力装配式短肢剪力墙在地震作用下连梁大部分保持弹性,塑性变形主要出现连梁与墙肢的连接部位,有利于震后修复;混合装配式短肢墙因墙肢与连梁处纵向普通钢筋的加入,其极限承载力较直接装配式短肢墙提高了23%。To research the seismic performance of the two kinds of new unbonded post-tensioned assembly short-limb shear walls（direct assembly and hybrid assembly short-pier wall）based on dry connection,the quasi-static test of two specimens of 8-story new short-limb shear walls is conducted.The test results show the unbonded post-tension short-limb shear wall based on reasonable design can realize strong limbs and weak coupling beams.The crack and damage of coupling beams are focused on the connection region of limbs and coupling beams.The rest region of coupling beams still remains elastic.Under the earthquake action,the main part of coupling beams of unbonded post-tensioned prestressing assembly short-limb shear walls remains elastic and the plastic deformation focus on the connection region of limbs and coupling beams,which is beneficial to post-earthquake reconstruction.The ultimate loading capacity of the hybrid assembly short-pier wall is 23 percent larger than that of the direct assembly short-pier wall due to the introduction of the longitudinal normal steel in the connection of limbs and coupling beams.

关 键 词：预应力 短肢 剪力墙 拟静力法 试验 

分 类 号：TU317[建筑科学—结构工程] TU378