排桩复合土钉支护结构水平位移简化计算方法  

Simplified calculation method of horizontal displacement of row piles and soil nailing composite supporting structure

作　　者：郭院成[1] 杨武帅 刘煜 马锴 李永辉[1] GUO Yuancheng;YANG Wushuai;LIU Yu;MA Kai;LI Yonghui(School of Civil Engineering,Zhengzhou University,Zhengzhou 450001,China;Zhengzhou City Municipal Engineering Design&Research Institute Co.,Ltd.,Zhengzhou 450046,China)

机构地区：[1]郑州大学土木工程学院,河南郑州450001 [2]郑州市市政工程勘测设计研究院有限公司,河南郑州450046

出　　处：《四川建筑科学研究》2024年第4期33-39,共7页Sichuan Building Science

基　　金：河南省重点研发专项项目(231111322110);河南省自然科学基金面上项目(222300420555)。

摘　　要：针对排桩复合土钉支护结构,基于其受力变形机理,引入了土钉钉头与排桩在相应位置处变形协调的基本假定,考虑了分步开挖施工工况,采用增量法建立了考虑施工过程影响的排桩复合土钉支护结构水平位移简化计算方法。算例及工程实例计算的对比分析表明,所建立的排桩复合土钉支护结构水平位移简化计算方法具有工程适用性。For the row piles and soil nailing composite supporting structure,a simplified calculation method of the horizontal displacement of the structure considering the influence of the construction process was established by the incremental method.According to the stress and deformation mechanism of the structure,the basic assumption of deformation coordination of soil nailing head and row pile in corresponding position was introduced in the calculation method.Moreover,the construction conditions of the excavation step were also considered.The engineering applicability of the horizontal displacement calculation method was verified by the comparison of the calculation results and the monitoring results of the project.

关 键 词：基坑工程 复合支护结构 水平位移 增量法 受力变形机理 

分 类 号：TU476[建筑科学—结构工程]