水力发电学报2024，Vol.43Issue(5)：94-102,9.DOI:10.11660/slfdxb.20240509
三向变形条件下铜片止水破坏准则研究
Failure criterion of copper water-stops under three-dimensional deformation
摘要
Abstract
Copper water-stop is the most important component for preventing water leak through the joints of hydraulic concrete structures.Concrete structures often experience uneven deformation under gravity and hydrostatic pressure,resulting in tension(or compression),settlement,and shear deformation(relative displacement)between the two wings of a copper water-stop.Its safety depends on the magnitude of the three-dimensional deformation,which is often judged by the displacement in each direction separately,without considering the coupling of different directions.This paper presents an experimental study of shear tests on copper water-stops under different tensile and settlement displacements,using a test stand that allows independent control of three directions and a total of 40 specimens in two different sizes are designed and fabricated.We examine shear deformation,its variations,and the failure modes of the specimens,and obtain a failure envelope surface in the three-dimensional displacement space.A failure criterion is derived for copper water-stops under three-dimensional displacement for judging the safety of similar water-stops.关键词
铜片止水/结构分缝/破坏准则/混凝土结构Key words
copper water-stop/structural joint/failure criterion/concrete structure分类
建筑与水利引用本文复制引用
王立安,傅中志,丁强生,王永生..三向变形条件下铜片止水破坏准则研究[J].水力发电学报,2024,43(5):94-102,9.基金项目
国家重点研发计划项目(2021YFC3090101) （2021YFC3090101）
国家自然科学基金(52222906 （）
U21A20158) （）
