新型预制地下连续墙接头力学与抗渗性能研究

作者:银霞 袁昌 李栋伟 张潮潮 刘小敏 侯刘锁
单位:深圳市勘察研究院有限公司 东华理工大学
摘要:装配式基坑预制墙板接头常发生破坏和渗漏,为此设计新型预制地下连续墙接头,并研究接头力学与抗渗性能,提出提高接头性能的措施。研究结果表明,预制地下连续墙破坏形式主要为变形及滑移导致的接头脱落,接头破坏导致结构整体失稳,可知接头为薄弱环节。新型预制地下连续墙接头可抵御30m水头,抗渗性能良好。
关键词:基坑地下连续墙接头装配式力学性能抗渗性能
作者简介:银霞,高级工程师,E-mail:21857001@qq.com。
基金:江西省自然科学基金(20192ACBL20002);新疆兵团科技计划项目(2020AB003)。 -页码-:99-102
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Study on Mechanical Property and Impermeability of New Precast Diaphragm Wall Joint
YIN Xia YUAN Chang LI Dongwei ZHANG Chaochao LIU Xiaomin HOU Liusuo
(Shenzhen Investigation & Research Institute Co., Ltd. East China University of Technology)
Abstract: The joint of precast wall panel in prefabricated foundation excavation often suffers from damage and seepage. Therefore, a new type of joint of precast diaphragm wall is designed, the mechanical and impermeability of the joint are studied, and the measures to improve the joint performance are given. The research results show that the failure mode of precast diaphragm wall is mainly the joint falling off caused by deformation and sliding, and the joint failure leads to the overall instability of the structure, which shows that the joint is a weak link. The new precast diaphragm wall joint can resist the water head of 30 m and has good impermeability.
Keywords: foundation excavation; diaphragm walls; joints; prefabricated; mechanical properties; impermeability
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