桩基竖向承载力测试及桩土作用数值模拟分析
摘要:以北京某高速桥梁桩基试验为例,介绍了桩基试验过程桩身轴力、位移监测设计及监测数据总结分析方法,得出该地层条件下各土层的桩侧阻力、桩端阻力、桩基极限荷载,提供摩擦桩设计的各种参数。在桩基试验监测数据的基础上,采用数值模拟分析桩基的破坏荷载,评价桩基设计参数的合理性,并对桩长、后注浆等桩基设计参数进行优化。在此基础上总结出桩基试验过程中桩土相互作用机理,为类似工程提供工程经验参考依据。
Abstract:The pile foundation test of a high-speed bridge in Beijing is introduced as an example, including axial force, displacement monitoring design and monitoring data analysis method during test process. The pile side resistance, pile end resistance and pile foundation ultimate load of each layer of soil under the stratum conditions are obtained. Various parameters for friction pile design are also provided. Based on pile foundation test monitoring data, the numerical simulation method is used to analyze the failure load of pile foundation, evaluate the rationality of pile foundation design parameters, and optimize pile foundation design parameters such as pile length and post grouting. The mechanism of pile-soil interaction during pile foundation test is summarized, which provides reference for engineering experience for similar projects.
中文标题：
桩基竖向承载力测试及桩土作用数值模拟分析
Vertical Bearing Capacity Test of Bridge Pile Foundation and Numerical Simulation Analysis of Pile-soil Interaction
作者：
孙玉辉,张辉,陈昌彦,刘国,姚添宝
Sun Yuhui,Zhang Hui,Chen Changyan,Liu Guo,Yao Tianbao
作者简介:孙玉辉,男,1982年生,汉族,河南周口人,硕士研究生,高级工程师,研究方向为地下工程施工风险管控。E-mail:63908264@qq.com
通讯地址：
北京市勘察设计研究院有限公司, 北京 100038
BGIEngineeringconsultantsLtd.,Beijing100038,China
中图分类号:TU473.1
doi:10.3969/j.issn.1007-2993.2020.06.001
出版物：岩土工程技术
收稿日期:2020-01-06
网络出版日期:2021-07-06
关键词:桩基,承载力试验,数值模拟,桩土相互作用
Key words:pile foundation,bearing capacity test,numerical stimulation,pile-soil interaction
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