嵌岩桩承载性能对比分析及优化措施探讨  

Comparative Analysis of Bearing Capacity of Rock-Socketed Piles and Discussion on Optimization Measures

作　　者：陈港[1] 李伟[1] 向伟 曹淑上[1] CHEN Gang;LI Wei;XIANG Wei;CAO Shushang

机构地区：[1]重庆市建筑科学研究院有限公司,重庆400016

出　　处：《重庆建筑》2024年第9期59-61,共3页Chongqing Architecture

基　　金：重庆市建设科技计划项目“城镇房屋建筑群安全风险评估体系与全生命周期智慧运维技术研究”(城科字2022第6-1号)。

摘　　要：在实际工程中,岩土体参数取值及基础设计方案对工程造价存在较大影响。该文依托重庆秀山地区某工程嵌岩桩相关技术资料,通过有限元方法及经验参数法对基桩承载性能进行对比分析,分析表明:在相同工程条件下,经基桩有限元方法及经验参数法计算的侧摩阻及端阻占比差值有正有负,基桩承载力特征值计算结果差距大,有限元方法比经验参数法大20%以上,提出应从地质参数及桩型方面对其进行优化。通过对嵌岩桩承载性能对比分析及优化措施的探讨,以期为类似工程实践提供一定的参考及借鉴。In practical engineering,the selection of geotechnical parameters and the design of foundation schemes significantly impact the project cost.This paper relies on the technical data related to rock-socketed piles from a project in Xiushan,Chongqing,and conducts a comparative analysis of the bearing capacity of piles using both the finite element method(FEM)and the empirical parameter method.The analysis reveals that under the same engineering conditions,the differences in the proportions of side friction and end resistance calculated by the FEM and the empirical parameter method can be both positive and negative,resulting in significant variations in the characteristic values of pile bearing capacity.Specifically,the FEM results are more than 20%higher than those obtained by the empirical parameter method.Consequently,it is proposed that optimizations should be made in terms of geological parameters and pile types.Through the comparative analysis of the bearing capacity of rock-socketed piles and the discussion on optimization measures,this paper aims to provide references for similar engineering practices.

关 键 词：嵌岩桩 承载性能 有限元方法 经验参数法 

分 类 号：TU473.1[建筑科学—结构工程]