岩土工程学报2024，Vol.46Issue(6)：1300-1308,9.DOI:10.11779/CJGE20230265
高心墙堆石坝接触黏土与岸坡接触特性的离心模型研究
Centrifugal model tests on contact characteristics of interface between contact clay and bank slope in high core rockfill dams
摘要
Abstract
In order to improve the deformation coordination between core wall and bank slope,the high core rockfill dam is usually equipped with high plastic clay between the core wall and the bank slope,which is collectively referred to as the contact clay.The deformation characteristics of the contact clay have a great influence on the stress deformation characteristics of high core wall.Four groups of centrifugal model tests are carried out on the interface between the clay and the bank slope,and the shear displacement of interface at different elevations of prototype dam is discussed.Based on theoretical analysis,an analytical expression is proposed to calculate the boundary effects in the centrifugal model tests on the interface between the clay and the bank slope so as to determine the similar scale of test model.The results show that at different elevations of the prototype dam,the interface between the contact clay and the bank slope will generate shear displacement.The deformation of the contact clay and gravel core-wall soil is mainly vertical settlement,and the settlement contour between the contact clay and the gravel core-wall soil changes continuously without steep change,which indicates that the contact clay plays a good role in coordinating deformation.Therefore,the contact effects between the contact clay and the bank slope should be considered in the structural safety analysis of high core rockfill dams.关键词
高心墙堆石坝/接触黏土-岸坡接触面/离心模型/边界效应Key words
high core rockfill dam/interface between contact clay and bank slope/centrifugal model/boundary effect分类
建筑与水利引用本文复制引用
朱雨萌,李国英,米占宽,魏匡民,陈子玉..高心墙堆石坝接触黏土与岸坡接触特性的离心模型研究[J].岩土工程学报,2024,46(6):1300-1308,9.基金项目
国家自然科学基金项目(U1765203) （U1765203）
