张吉怀铁路酉水大桥岸坡岩体稳定性数值分析  

Numerical Analysis on Stability of Rock Mass and Bank Slope of Youshui Bridge of Zhangjihuai Railway

作　　者：杨松[1] Yang Song(China Railway Siyuan Survey and Design Group Co. Ltd., Wuhan Hubei 430063,China)

机构地区：[1]中铁第四勘察设计院集团有限公司

出　　处：《铁道建筑技术》2019年第9期78-81,106,共5页Railway Construction Technology

基　　金：中铁第四勘察设计院集团有限公司科技开发计划项目(2015K22)

摘　　要：新建张吉怀铁路酉水大桥两岸山坡陡峭,岸坡稳定性分析为该桥梁设计的关键.本文通过采用地质调查、现场测试、钻探等勘察手段对桥址区工程地质及水文地质特征进行详细调查,在此基础上对酉水大桥岸坡岩体稳定性进行数值分析.通过计算建桥前及建桥后的附加应力特点,研究岩体及岸坡的稳定性;在桥梁荷载作用下,计算桥墩处的沉降和水平变形,研究整体平衡性.为桥梁工程安全提供技术支撑,为类似桥梁边坡的稳定性分析提供参考.The both sides of the Youshui Bridge are steep in Newly-built Zhangjihuai Railway, the analysis on slope stability of the banks was the key issue to the bridge design. The engineering geology and hydrogeological characteristics of the bridge site were investigated in detail by means of geological survey, field test and drilling. The stability of the bank slopes of Youshui Bridge was analyzed numerically. The additional stress characteristics before and after bridge construction were calculated, and analysis on stability of rock mass and bank slopes was performed. Under the bridge load, the settlement and horizontal deformation at the pier were calculated to study the overall balance. It could provide technical support for bridge engineering safety, and serve a reference for the stability analysis of similar bridge slope.

关 键 词：桥址岸坡 数值模拟 稳定性分析 

分 类 号：U443.1[建筑科学—桥梁与隧道工程] U416.14[交通运输工程—道路与铁道工程]