Based on mechanical characteristics such as large vertical load,large horizontal load,large bending moment and complex geological conditions,a large scale composite bucket foundation (CBF) is put forward.Both the theo...Based on mechanical characteristics such as large vertical load,large horizontal load,large bending moment and complex geological conditions,a large scale composite bucket foundation (CBF) is put forward.Both the theoretical analysis and numerical simulation are employed to study the bearing capacity of CBF and the relationship between loads and ground deformation.Furthermore,monopile,high-rise pile cap,tripod and CBF designs are compared to analyze the bearing capacity and ground deformation,with a 3-MW wind generator as an example.The results indicate that CBF can effectively bear horizontal load and large bending moment resulting from upper structures and environmental load.展开更多
为解决传统拉森钢板桩支护刚度不足的问题,提出一种由钢管与Hat型钢板桩交叉组合使用的新型组合支护结构(Pile-Hat type steel sheet pile-Composite,简称PHC),其既有钢管桩抗弯刚度大的优势,又有钢板桩止水挡土的优点。同时,针对PHC支...为解决传统拉森钢板桩支护刚度不足的问题,提出一种由钢管与Hat型钢板桩交叉组合使用的新型组合支护结构(Pile-Hat type steel sheet pile-Composite,简称PHC),其既有钢管桩抗弯刚度大的优势,又有钢板桩止水挡土的优点。同时,针对PHC支护结构可能存在的问题,展开了截面刚度、结构选型、施工工艺等方面研究,并以马鞍山某基坑工程为算例,得出桩顶水平位移与地表最大沉降值的偏差在15%左右,表明该组合支护结构设计合理。最终总结了钢管+Hat型钢板桩的刚度计算、等效截面计算和桩体选型方法,提出组合支护结构的施工工艺和注意事项,对提高地下工程施工质量和安全具有一定意义,也为该组合支护结构的实际应用与推广提供参考。展开更多
文摘Based on mechanical characteristics such as large vertical load,large horizontal load,large bending moment and complex geological conditions,a large scale composite bucket foundation (CBF) is put forward.Both the theoretical analysis and numerical simulation are employed to study the bearing capacity of CBF and the relationship between loads and ground deformation.Furthermore,monopile,high-rise pile cap,tripod and CBF designs are compared to analyze the bearing capacity and ground deformation,with a 3-MW wind generator as an example.The results indicate that CBF can effectively bear horizontal load and large bending moment resulting from upper structures and environmental load.
文摘为解决传统拉森钢板桩支护刚度不足的问题,提出一种由钢管与Hat型钢板桩交叉组合使用的新型组合支护结构(Pile-Hat type steel sheet pile-Composite,简称PHC),其既有钢管桩抗弯刚度大的优势,又有钢板桩止水挡土的优点。同时,针对PHC支护结构可能存在的问题,展开了截面刚度、结构选型、施工工艺等方面研究,并以马鞍山某基坑工程为算例,得出桩顶水平位移与地表最大沉降值的偏差在15%左右,表明该组合支护结构设计合理。最终总结了钢管+Hat型钢板桩的刚度计算、等效截面计算和桩体选型方法,提出组合支护结构的施工工艺和注意事项,对提高地下工程施工质量和安全具有一定意义,也为该组合支护结构的实际应用与推广提供参考。