钢箱梁盾构技术在古建筑基础托换中的应用研究*
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(1 天津大学建筑工程学院, 天津 300072; 2 河北省建筑科学研究院, 石家庄 050021; 3 河北建研科技有限公司, 石家庄 050021)[摘要]采用数值分析方法对钢箱梁盾构技术在古建筑基础托换中的应用进行了研究。通过分析钢箱梁和周侧地基土的应力和变形,研究了基础托换过程中钢箱梁和周侧地基土的力学效应,得到了钢箱梁的应力、应变及其对周侧地基土影响范围的变化规律,为钢箱梁盾构托换在古建筑顶升保护工程中的应用提供参考。[关键词]古建筑; 钢箱梁; 盾构; 基础托换; 数值模拟中图分类号:TU398+.9 文献标识码:A 文章编号:1002-848X(2015)09-0063-05Application research on steel box girder shield technology in ancient building foundation underpinningBian Zhihui1,2, Wang Tiecheng1, Li Xuguang3, Li Shangfei3(1 School of Civil Engineering, Tianjin University, Tianjin 300072, China; 2 Heibei Academy of Building Research,Shijiazhuang 050021,China; 3 Hebei Building Research Engineering Co., Ltd., Shijiazhuang 050021, China)Abstract: The process of ancient building foundation underpinning with shield technology of the steel box girder was simulated by the numerical analysis method. Through the stress and deformation analyses of the steel box girder and surrounding foundation soil, the mechanical effects of steel box girder and surrounding foundation soil were studied in foundation underpinning. The changing laws of the stress and strain of the steel box girder and their influence ranges on surrounding foundation soil were obtained, which provides reference for the shield technology of steel box girder in ancient building jacking-up protection projects.Keywords:ancient building; steel box girder; shield; foundation underpinning; numerical simulation*河北省科技支撑计划项目(13255801D)。作者简介:边智慧,博士研究生,教授级高级工程师,Email:13903217322@126.com。参考文献[1]线登洲,王铁成,边智慧.昆明市金刚塔整体顶升施工新技术[J].施工技术,2005,34(8):17-19.[2]赵灿强,边智慧,付素娟,等.古塔整体平移技术分析[J].建筑结构, 2013,43(S1):795-798.[3]黄吉龙,陈锦剑,王建华,等.大口径顶管顶进过程的数值模拟分析[J].地下空间与工程学报,2008,4(3):389-493.[4]黄宏伟,胡昕.顶管施工力学效应的数值模拟分析[J].岩石力学与工程学报,2003,22(3): 400-406.[5]陈思甜,何剑星,张永兴,等.超浅层小半径曲线顶管地面扰动数值模拟分析[J].重庆交通大学学报:自然科学版,2009,28(5): 861-864.[6]陈楠,陈锦剑,夏小和,等.长钢顶管稳定特性的有限元分析[J].上海交通大学学报:自然科学版, 2012,46(5): 832-836.[7]马保松,STEIN D,蒋国盛,等.顶管和微型隧道技术[M].北京:人民交通出版社,2004.