论桩基础在旧城区改造中的应用

Application of pile foundation in transforming old urban districts

桩基选型的综合效益应考虑上部结构类型和处理地基之间的最佳平衡.在选择单桩承载力的同时,应考虑使桩长、桩数、桩径、桩基沉降量中一些附属参数平衡以实现系统优化.在设计的桩基工程项目中选择了22个项目,对引起桩基效益不佳的若干原因和因素进行了分析.

For comprehensive benefit of the selecting type of a pile foundation（ base）, the upper structure type and the treatment of the best balance between the ground works should be considered. While choosing the bearing capacity of single pile, the pile model （type） designing counterpoise the subsidiary parameter in pile length, pile amount, pile diameter and pile base send imentation to realize the system optimizing. According to the base project which we designed, we have chosen 22 projects to analyse several causes and factors that ruin the pile base effect.