湖南大学学报（自然科学版）2025，Vol.52Issue(5)：99-107,9.DOI:10.16339/j.cnki.hdxbzkb.2025051
装配式地连墙不同节点形式的界面抗剪能力对比试验研究
Comparative Test Study on Interfacial Shear Resistance of Different Joints of Prefabricated Diaphragm Walls
摘要
Abstract
With the rapid development of building industrialization,prefabricated diaphragm walls have been increasingly applied in underground engineering.However,existing research on the shear resistance of different types of vertical joints remains inadequate.This study designed four model components incorporating rigid and flexible joints and conducted direct shear loading tests and analysis.The test results showed that under the same conditions,rigid joints generally had higher shear-bearing capacity than flexible joints,among which the steel pipe tie joint has the highest load-bearing capacity and the socket-type joint has the lowest;all four types of joints failed due to brittle shear failure modes.During failure,the anchorage structure of rigid joints affected the crack morphology with vertical cracks along the steel pipe wall in rigid joints.However,the flexible joints exhibited cracks crossing the joint section.Strain test data further verified the development characteristics of cracks under shear conditions.Meanwhile,it is found that the PCI formula provides a relatively accurate calculation of the shear-bearing capacity for rigid joints.The above research lays a foundation for the promotion and application of prefabricated diaphragm walls.关键词
装配式地连墙/抗剪强度/刚性接头/柔性接头/脆性破坏Key words
prefabricated diaphragm wall/shear strength/rigid joints/flexible joints/brittle failure分类
土木建筑引用本文复制引用
刘晓东,穆保岗,黄李骥,刘明虎,邓会元,龚维明,赵佳,肖世伟..装配式地连墙不同节点形式的界面抗剪能力对比试验研究[J].湖南大学学报（自然科学版）,2025,52(5):99-107,9.基金项目
中交集团重大科技研发项目(2021-ZJKJ-07),Major Science and Technology Research and Development Project of CCCC(2021-ZJKJ-07) （2021-ZJKJ-07）
