洪积砾砂层静载试验研究  

Static Load Test Research on Diluvial Gravel Sand Layer

作　　者：杜磊 Du Lei(Gansu Water Resources and Hydropower Survey Design and Research Institute Co.,Ltd.,Lanzhou 730000,Gansu)

机构地区：[1]甘肃省水利水电勘测设计研究院有限责任公司,甘肃兰州730000

出　　处：《陕西水利》2021年第10期177-179,185,共4页Shaanxi Water Resources

摘　　要：浅层平板载荷试验是在拟建建筑物场地上将一定尺寸的刚性承压板,安放在被测的地基持力层上,逐级增加荷载,并测得每一级荷载下的稳定沉降,直至达到地基破坏,由此可得到荷载-沉降曲线(p-s曲线)。武家沙河渡槽的部分重力墩基础坐落于洪积砾砂层上,且砂砾层中局部夹细砂透镜体。因此研究洪积砾砂层的变形特性,确定其准确的地基承载力,为工程优化设计,降低工程造价。The shallow plate load test is to place a certain size of rigid bearing plate on the tested foundation bearing layer on the site of the proposed building,and increase the load step by step.The stable settlement under each level of load is measured until the foundation is destroyed,and the load-settlement curve(p-s curve)can be obtained from this.Part of the gravity pier foundation of the Wujiasha River Aqueduct is located on the diluvial gravel sand layer,and the sand gravel layer is partially intercalated with fine sand lenses.Therefore,studying the deformation characteristics of the diluvial gravel sand layer and determining its accurate foundation bearing capacity can optimize the design of multiple projects and reduce the project cost.

关 键 词：浅层平板 洪积扇 砾砂 透镜体 承载力 变形模量 

分 类 号：U443.15[建筑科学—桥梁与隧道工程]