沉降控制复合桩基沉降影响因素的有限元分析

为研究上海地区的沉降控制复合桩基的沉降影响因素,利用ANSYS对桩-土-板基础模型进行有限元模拟,并探讨不同的桩径、桩长与桩距对沉降控制复合桩基的具体作用效果.研究结果表明：在设计沉降控制复合桩基时,桩距应大于等于6～7倍桩径;桩径的选取范围最好是在300mm之内,以最大限度地利用桩的沉降控制效率;沉降控制复合桩的桩长与桩径比以80～90为宜.

The Finite Element Analysis of Influencing Factors of Deposition Controlling Composite Pile Foundation

In order to study the influencing factors of deposition controlling composite plie foundation in Shanghai,a finite element analysis to the pile-soil-board foundation was conducted by using ANSYS,and the specific effects of pile diameter,pile length and space between piles on the deposition controlling composite pile foundation were also analyzed.The results show that： When we are designing Settlement control composite pile foundation,pile spacing should be greater than or equal to 6-7 times the diameter of pile;Pile diameter is at the best within 300mm,thus maximizing the use of pile settlement control efficiency;The ratio of pile length to pile diameter should be between 80-90.