竖向缝螺栓连接全装配式联肢复合墙抗震性能试验研究

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振动与冲击 ›› 2023, Vol. 42 ›› Issue (19) : 153-161.

论文

苗欣蔚1,2,3，黄炜3,4，张家瑞3,4

作者信息 +

Test study on aseismic performance of fully assembled jointed composite wall with vertical seam bolt connection

MIAO Xinwei1,2,3, HUANG Wei3,4, ZHANG Jiarui3,4

Author information +

文章历史 +

摘要

课题组前期提出一种竖向缝采用螺栓连接的全装配式联肢复合墙，为进一步明确此类连接方式对墙体抗震性能的影响规律，以连接钢板厚度为变参设计了3榀联肢复合墙试件（PCW-B），通过拟静力试验对比研究各试件的破坏模式、裂缝发展、抗震性能，以及竖向缝在受力过程中的变形规律。试验结果表明：竖缝连接钢板厚度对试件破坏形态无明显影响；提升竖缝板厚可显著增强试件的初始刚度、承载力，但会降低试件延性；当板厚超过6mm可显著提升试件耗能性能；分析并提出竖缝受剪承载力主要取决于连接件的抗剪和界面摩擦力抗剪两项，其中连接件抗剪贡献因素包括：连接钢板强度、高强螺栓和预埋件处箍筋作用力，并基于此提出竖向接缝受剪承载力计算公式。此公式亦可为其它墙体结构提供理论参考。

Abstract

In the early stage, the research group proposed a fully assembled composite wall with vertical joints connected by bolts. In order to further clarify the influence of this connection mode on the seismic performance of the wall, three coupled composite wall specimens (PCW-B) were designed with the thickness of the vertical joint connecting steel plate as a variable parameter. Through the pseudo static test, the failure mode, crack development, rules of seismic performance, and deformation rules of vertical joints in the process of stressing were compared and studied. The test results show that the thickness of vertical joint steel plate has no obvious influence on the failure mode of the specimen; Increasing the thickness of the vertical joint plate can significantly increase the initial stiffness and bearing capacity of the specimen, but will reduce the ductility; When the slab thickness exceeds 6mm, the wall energy consumption capacity can be significantly improved. Finally, it is analyzed and proposed that the shear bearing capacity of vertical joints mainly depends on the shear resistance of connectors and the friction force generated by the contact surface. The shear contribution factors of connectors include the strength of connecting steel plates, high-strength bolts and stirrup force at embedded parts. Based on this, a formula for calculating the shear bearing capacity of vertical joints is proposed.

导出引用

苗欣蔚1,2,3，黄炜3,4，张家瑞3,4. 竖向缝螺栓连接全装配式联肢复合墙抗震性能试验研究[J]. 振动与冲击, 2023, 42(19): 153-161

MIAO Xinwei1,2,3, HUANG Wei3,4, ZHANG Jiarui3,4. Test study on aseismic performance of fully assembled jointed composite wall with vertical seam bolt connection[J]. Journal of Vibration and Shock, 2023, 42(19): 153-161

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