基于边载效应的平板载荷试验研究  

Research on Plate Load Test Based on Edge Load Effect

作　　者：阳岢杙 YANG Keyi(China Railway 18th Bureau Group Fourth Engineering Co.,Ltd.,Tianjin 300350,China)

机构地区：[1]中铁十八局集团第四工程有限公司,天津300350

出　　处：《广东交通职业技术学院学报》2025年第2期7-11,共5页Journal of Guangdong Communication Polytechnic

基　　金：天津房建科员基金(编号:TJFJ2021-45)。

摘　　要：为解决风化砂岩相较于常规岩层承载能力较低,成岩性较差且质地松软,在水分长期渗入条件下易发生岩体崩解,以及工程实践中采用常规试验方法确定风化砂岩地基承载性能时存在明显局限性的问题,依托天津北大资源东丽湖(阅府)项目,在考虑边载效应的基础上,分别开展平板载荷试验和浅层平板载荷试验。试验结果表明:风化砂岩地基承载力的极限值可达6000~6400 kPa,以比例界限为依据测试的承载力特征值为2400~2800 kPa,施加边载后风化砂岩地基承载力水平得到显著提升。In order to solve the problems of low bearing capacity,poor diagenesis,and soft texture of weathered sandstone compared to conventional rock layers,which are prone to rock mass collapse under long-term water infiltration conditions,and to solve the obvious limitations of using conventional testing methods to determine the bearing performance of weathered sandstone foundation in engineering practice,based on the Dongli Lake(Yuefu)project of Tianjin Beida Resources,plate load tests and shallow plate load tests were carried out respectively considering the edge load effect.The test results show that the ultimate bearing capacity of weathered sandstone foundation can reach 6000~6400 kPa.Based on the proportional limit,the test value of bearing capacity is 2400~2800 kPa.After applying edge load,the bearing capacity level of weathered sandstone foundation is significantly improved.

关 键 词：边载效应 平板载荷 风化砂岩 

分 类 号：TU473[建筑科学—结构工程]