隧道开挖对建筑物条形基础效应的简化解析解  

The Simplified Calculation on the Strip Foundation Effect of the Buildings Induced by the Tunnel Excavation

作　　者：田晓艳[1] 朱熹育[1] 代建波[1] 李源[2] Tian Xiaoyan;Zhu Xiyu;Dai Jianbo;Li Yuan(School of Mechanical Engineering,Xi’an Shiyou University,Xi’an 710065,China;China Northwest Building Design Research Institute,Xi’an 710018,China)

机构地区：[1]西安石油大学机械工程学院,陕西西安710065 [2]中国建筑西北设计研究院有限公司,陕西西安710018

出　　处：《湖南科技大学学报（自然科学版）》2020年第3期39-44,共6页Journal of Hunan University of Science And Technology：Natural Science Edition

基　　金：国家自然科学基金青年科学基金资助项目(51808446);陕西省重点研发计划项目资助(2019SF-266);陕西省自然科学基础研究计划企业联合基金资助项目(2018JQ5184)。

摘　　要：本文针对隧道开挖引发的地表沉降槽曲线特点,首先利用反分析法研究隧道开挖对浅基础效应的影响,利用微元体的平衡条件建立条形基础与地基的协同作用微分方程,然后采取概念明确的初参数法求解,根据平截面假定,结合材料力学基本理论,考虑双曲线三角函数的微分特点,得出隧道穿越条形基础的位移与内力的理论计算表达式,公式简单便于工程应用,最后结合工程算例分析,研究了条形基础不同位置处效应的曲线变化特点.In view of the ground settlement trough curve caused by the tunnel excavation,the inverse analysis method was used to study the effect of the shallow foundation induced by the tunnel excavation.Firstly the synergy differential equation was founded by using the balance condition of the infinitesimal body.Then the initial parameter method of the definite concept was to used to solve the differential equation.By means of the flat section assumption and combining with the theory of the mechanics of materials and considering the differential characteristics of the hyperbolic trigonometric function,the theoretical calculation formula of the displacement and internal force of the strip foundation were drawn.Moreover the formulas were simple and convenient for engineering application.Lastly the curves features of the strip foundation on the different location were studied by combining with engineering case.

关 键 词：反分析法 协同作用微分方程 初参数法 条形基础的位移与内力 

分 类 号：TU459[建筑科学—岩土工程]