旋喷桩复合地基在边坡工程中的应用研究  

Application of Jet Grouting Pile Composite Foundations in Slope Engineering

作　　者：沈培文 陈悦[3] 马松 崔金银 肖峰 SHEN Peiwen;CHEN Yue;MA Song;CUI Jinyin;XIAO Feng

机构地区：[1]重庆第二师范学院,重庆400065 [2]重庆大学建筑规划设计研究总院有限公司,重庆400045 [3]重庆交通大学土木工程学院,重庆400074 [4]重庆市建筑科学研究院有限公司,重庆400016

出　　处：《重庆建筑》2025年第1期65-68,共4页Chongqing Architecture

基　　金：重庆市自然科学基金面上项目(CSTB2023NSCQ-MSX0654);重庆市教育委员会科学技术研究项目(KJQN202301606)。

摘　　要：旋喷桩复合地基在工程中应用广泛,对于提高竖向承载力和减小建筑物沉降意义重大,而目前对其抗剪强度的研究及应用还较少。将复合土体剪切强度指标计算方法应用于旋喷桩复合地基边坡稳定性计算,通过现场剪切试验检测和分析高压旋喷注浆后桩体、桩间土和原生土的抗剪强度指标,计算复合土体综合抗剪强度指标。以在建工程为例,采用传递系数隐式解的折线法和圆弧滑面法分析边坡整体和局部稳定性。经方案比选,复合地基方案在安全可靠前提下具有可观的经济效益。Jet grouting pile composite foundations are widely used in engineering projects,significantly improving vertical bearing capacity and reducing settlement of structures.However,research and applications related to their shear strength remain limited.In this study,the shear strength calculation method for composite soil is applied to slope stability analysis of jet grouting pile composite foundations.Through on-site shear tests,the shear strength parameters of jet-grouted piles,inter-pile soil,and native soil are tested and analyzed to calculate the integrated shear strength parameters of the composite soil.Using an ongoing construction project as a case study,the stability of the slope,both overall and locally,is analyzed using the transfer coefficient implicit solution method with a piecewise linear approach and the circular sliding surface method.Scheme comparison shows that the composite foundation scheme offers considerable economic benefits while ensuring safety and reliability.

关 键 词：复合地基 旋喷桩 抗剪强度 边坡工程 稳定性 

分 类 号：TU470[建筑科学—结构工程]