部分设置滑动层方法的抗温度裂缝设计

Resisting temperature crack design on part setting slide layer

在顶板与墙体 (或圈梁 )间设置滑动层可以减小混合结构顶层墙体温度应力 ,避免温度裂缝 .在墙体温度应力分析的基础上 ,提出按圈梁及墙体抗裂能力确定滑动层设置范围 .设置滑动层后 ,按顶板与圈梁间抗剪能力验算抗震性能 ;在保证顶板与圈梁间可靠性的前提下 ,对顶层楼板间采取必要的拉结措施 ,以保证其在地震作用下的整体性 .通过对试验墙体的分析 ,6度设防情况下 ,滑动层的理论设置长度一般能够满足抗震设防要求 .

Setting slide layer between top board and wall (or ring girder) is a good measure to reduce temperature stress of top wall of mix structure and avoid temperature cracks. Based on the temperature stress analysis, a method is brought forward. According to the resisting crack ability of ring girder and wall to confirm slide layer setting range and according to the resisting shear ability of ring girder and top board to check computation on aseismatic ability, necessary tensing method is provided to the top of stair wall so as to ensure the integrality by premising ensuring the aseismatic ability of joint of top board and ring girder. Setting length of slide layer theory is suited to aseismatic demand by analysis of experimental wall.