水闸桩基础的优化设计  

Optimization Design of the Pile Foundation

作　　者：钟恒昌 孙勇[1] 孙明霞[1] 杨子江[1] 

机构地区：[1]中水淮河规划设计研究有限公司,安徽蚌埠233001

出　　处：《人民黄河》2014年第4期135-137,共3页Yellow River

基　　金：水利部公益性行业科研专项(201101013)

摘　　要：针对水闸以承受水平荷载为主,竖向荷载一般不作为控制水闸桩基设计指标的特点,介绍了提高桩基横向承载力的各种措施及符合水闸受力特点的各类桩基方案。根据具体水闸工程实例的工程地质条件拟定了桩顶换土、加翼板、阶梯形变截面桩、斜桩和现浇混凝土大直径管桩(PCC桩)5个桩基础优化设计方案,并从处理效果、施工技术、工程投资等方面对优化设计方案和原灌注桩基础的优缺点及合理性进行了对比分析,结果表明:PCC桩方案投资最少,其次为变截面桩方案和斜桩方案,桩顶换土方案、加翼板方案与原桩基方案相比投资相差不大。The measures of improving the lateral bearing capacity of pile foundation and all kinds of pile foundation project of accord with sluice characteristics of the force sluice were introduced, according to the characteristics of sluice to bear horizontal load and vertical load is generally not as control design of pile foundation work of sluice. According to the concrete sluice specific engineering geology, the five optimization designs of pile＂ foundation were proposed replacement, which was pile soil replacement, the original wing plate pile, the variable section pile, inclined pile and cast in place concrete of large diameter pile. The five optimization designs were compared with the treatment effect, construction technology, and project investment and so on. The results show that PCC pile project investment is the mininnm, followed by the variable section pile and in- clined pile. The pile soil replacement scheme and the scheme of the original wing plate pile foundation are little difference in investment.

关 键 词：水闸 桩基础 优化设计 横向承载力 

分 类 号：TV662[水利工程—水利水电工程]