岩土工程学报2026，Vol.48Issue(5)：1027-1035,9.DOI:10.11779/CJGE20250112
大型嵌岩封闭地连墙的水平静载试验研究
Lateral static loading test of closed rock-socketed diaphragm walls
摘要
Abstract
Closed diaphragm walls,when serving as long-term foundations,demonstrate exceptional lateral bearing capacity.Relying on a specific project in Shenzhen,a lateral static loading test is conducted on enclosed rock-socketed diaphragm walls.The test monitors the displacements at the wall top and lateral geotechnical resistance using pre-installed instruments.During the experiment,the maximum applied load reached 80500 kN,representing the largest lateral static loading test conducted globally to date.The experimental results reveal that the load-displacement curve of the rock-socketed closed diaphragm wall exhibits gradual and nonlinear characteristics.Throughout the loading process,the wall experiences both horizontal and vertical rotations,with horizontal rotation primarily caused by the uneven distribution of rock layers on-site.The lateral geotechnical pressure with depth shows a trend of initially increasing and subsequently decreasing,with the maximum pressure observed at a depth of 0.28 times the wall depth.The distribution of lateral geotechnical pressure was significantly influenced by the position of the vertical rotation point,which is located in a relatively shallow rock layer.Furthermore,no resistance is provided by the enclosed soil,and the enclosed rock resistance is signlficantly reduced compared with the surrounding rock resistance.Specifically,the enclosed rock resistance of moderately weathered granite is approximately 0.73 times that of the surrounding rock,while the enclosed rock resistance of slightly weathered granite is approximately 0.63 times that of the surrounding rock.关键词
地下连续墙/嵌岩桩/水平静载试验/大型基础Key words
diaphragm wall/rock-socketed pile/lateral static loading test/large foundation分类
建筑与水利引用本文复制引用
孙振钊,龚维明,黄磊,周坚荣,王鑫,夏磊..大型嵌岩封闭地连墙的水平静载试验研究[J].岩土工程学报,2026,48(5):1027-1035,9.基金项目
国家自然科学基金项目(52178317)This work was supported by the National Natural Science Foundation of China(Grant No.52178317). （52178317）
