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### 基于虚拟柱状等效模型的桩基沉降位移计算方法

1. 1.上海城建市政工程集团有限公司, 上海 200030
2.上海交通大学 船舶海洋与建筑工程学院, 上海 200240
• 收稿日期:2020-11-23 出版日期:2021-09-28 发布日期:2021-10-08
• 通讯作者: 王颖轶 E-mail:wangyingyi@sjtu.edu.cn
• 作者简介:王荣勇(1987-),男,江苏省南通市人,工程师,从事地下工程研究.

### Calculation Method of Pile Foundation Settlement Displacement Based on Virtual Column Equivalent Model

WANG Rongyong1, LIU Linqi1, WANG Yingyi2(), HUANG Xingchun2

1. 1. Shanghai Urban Construction Municipal Engineering (Group), Co., Ltd., Shanghai 200030, China
2. School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
• Received:2020-11-23 Online:2021-09-28 Published:2021-10-08
• Contact: WANG Yingyi E-mail:wangyingyi@sjtu.edu.cn

Abstract:

According to the engineering characteristics of pile foundation in soft soil layer, a virtual column structure model was proposed, and a theoretical solution to pile foundation settlement displacement was established. Besides, the load transfer characteristics of pile foundation in soft soil layer, the bearing mode of pile foundation, and its dynamic relationship with the gradual evolution of load and environmental conditions were studied. The results show that there are friction bearing and friction with pile end bearing modes in pile foundation, and they change significantly with pile top load, construction, and environmental factors. Affected by the load transfer law, there is a 0-axis force section in the axial direction of pile foundation. The relationship between the depth and the length of pile foundation affects the type of bearing mode and displacement calculation results. The field results verify the correctness and applicability of the theoretical method.