A simplified approach is presented to analyze the single pile settlement in multilayered soil. First, a fictitious soil-pile model is employed to consider the effect of layered soil beneath pile toe on pile settlement...A simplified approach is presented to analyze the single pile settlement in multilayered soil. First, a fictitious soil-pile model is employed to consider the effect of layered soil beneath pile toe on pile settlement behavior. Two approximation methods are proposed to simplify the nonlinear load transfer function and simulate the nonlinear compression of fictitious soil-pile, respectively. On this basis, an efficient program is developed. The procedures for determining the main parameters of mathematical model are discussed. Comparisons with two well-documented field experimental pile loading tests are conducted to verify the rationality of the present method. Further studies are also made to evaluate the practicability of the proposed approach when a soft substratum exists, and the results suggest that the proposed method can provide a constructive means for assessing the settlement of a single pile for use in engineering design.展开更多
对于存在软弱下卧层的软土地区,大偏心建筑基础设计较为复杂,不仅要考虑地基强度,同时要考虑建筑物不均匀沉降问题,需从建筑物整体倾斜率控制的角度对基础形式进行选择。本文根据场地土层性质,基于规范中地基强度验算,对某指挥中心大楼...对于存在软弱下卧层的软土地区,大偏心建筑基础设计较为复杂,不仅要考虑地基强度,同时要考虑建筑物不均匀沉降问题,需从建筑物整体倾斜率控制的角度对基础形式进行选择。本文根据场地土层性质,基于规范中地基强度验算,对某指挥中心大楼大偏心基础设计提出了天然地基、持力层位于第3层的短桩和持力层位于第6层的长桩三种基础形式。考虑到拟建建筑为大偏心建筑,需从建筑物整体倾斜率控制的角度对基础形式进行选择,采用A B A Q U S和PLAXIS两种有限元分析软件进行定量数值计算和比较,得出合适的基础形式。计算结果为存在软弱下卧层的大偏心建筑基础设计提供定量分析手段。展开更多
基金Project(51378464) supported by the National Natural Science Foundation of China
文摘A simplified approach is presented to analyze the single pile settlement in multilayered soil. First, a fictitious soil-pile model is employed to consider the effect of layered soil beneath pile toe on pile settlement behavior. Two approximation methods are proposed to simplify the nonlinear load transfer function and simulate the nonlinear compression of fictitious soil-pile, respectively. On this basis, an efficient program is developed. The procedures for determining the main parameters of mathematical model are discussed. Comparisons with two well-documented field experimental pile loading tests are conducted to verify the rationality of the present method. Further studies are also made to evaluate the practicability of the proposed approach when a soft substratum exists, and the results suggest that the proposed method can provide a constructive means for assessing the settlement of a single pile for use in engineering design.
文摘对于存在软弱下卧层的软土地区,大偏心建筑基础设计较为复杂,不仅要考虑地基强度,同时要考虑建筑物不均匀沉降问题,需从建筑物整体倾斜率控制的角度对基础形式进行选择。本文根据场地土层性质,基于规范中地基强度验算,对某指挥中心大楼大偏心基础设计提出了天然地基、持力层位于第3层的短桩和持力层位于第6层的长桩三种基础形式。考虑到拟建建筑为大偏心建筑,需从建筑物整体倾斜率控制的角度对基础形式进行选择,采用A B A Q U S和PLAXIS两种有限元分析软件进行定量数值计算和比较,得出合适的基础形式。计算结果为存在软弱下卧层的大偏心建筑基础设计提供定量分析手段。
