柱下筏板基础冲切承载力的试验研究 English Version
Punching failure test study on raft foundation under column load
-
摘要: 通过大比例室内模型试验,对天然地基土上两块完全相同的筏板分别进行了单独加荷和同步加荷破坏试验,对表现出来的冲切性状进行了研究,得出了集中柱荷载作用下角柱、边柱下筏板冲切破坏实测承载力值,并与规范计算值做了对比。试验表明,类似试验条件下的筏板破坏,验算时的控制截面是冲切破坏截面。增加上部结构刚度和基础刚度及减少筏板差异沉降可使筏板冲切破坏荷载大大提高,从而提高筏板冲切设计安全度。Abstract: The punching failure of corner columns and border columns under vertical concentrated columns load is studied through large-scale model tests in the laboratory.On the basis of crude soil,two identical raft foundations are tested under different loads.Different punching failure values of the corner columns,border columns are obtained under the vertical concentrated column load,and these values are compared with the code’s values.The study shows the control failure section of the raft foundation is the punching failure section,and that the increase of the rigidity of foundation and upper structure and the reduction of the differential settlement of the raft foundation can greatly improve its carrying capacity and enhance the degree of safety in designing raft foundation.
-
期刊类型引用(6)
1. 卢斌,郑雪玉,吴修锋,谢兴华,李艳伟,王照英. 特高堆石坝砾石土心墙非均质缺陷对渗流场影响分析. 水电与抽水蓄能. 2023(03): 22-25+39 . 百度学术
2. 王定顺,赵文辉,石旭东,张金瑞,杨有海,张延杰. 高压旋喷桩施工对既有铁路路基变形影响研究. 铁道科学与工程学报. 2023(07): 2500-2508 . 百度学术
3. 黄诗渊,王俊杰,王爱国,吉恩跃,郭万里,靳松洋. 压剪作用下压实黏土断裂破坏机理及断裂准则. 岩土工程学报. 2021(03): 492-501 . 本站查看
4. 崔博,邓博麒,刘明辉,余佳,王晓玲. 基于不规则颗粒离散元的砾石土三轴数值模拟. 水力发电学报. 2020(04): 73-87 . 百度学术
5. 马少坤,唐晓菲,李少龙,张捷,刘莹,段智博. 非饱和砾石土土水特征曲线研究. 公路. 2020(05): 34-42 . 百度学术
6. 周怡,彭振斌,何忠明,尹泉. 砾石土防渗料压实特性. 中南大学学报(自然科学版). 2020(08): 2061-2068 . 百度学术
其他类型引用(6)