山西省黄土山区桥梁下部水毁调查及成因分析  

Drainage Washout Survey and Analysis for Bridge Substructure in Loess Hilly Area of Shanxi Province

作　　者：王磊[1] 韩之江[1] 吴佳佳[1] WANG Lei;HAN Zhijiang;WU Jiajia(Shanxi Key Laboratory of Bridge Engineering Disaster Prevention and Mitigation,Shanxi Transportation Research Institute,Taiyuan,Shanxi 030006,China)

机构地区：[1]山西省交通科学研究院桥梁工程防灾减灾山西省重点实验室

出　　处：《公路工程》2019年第3期154-160,共7页Highway Engineering

基　　金：山西省交通厅科技项目(2017-1-23);山西省交通厅交通建设科研项目(2015-2-08);山西省科技厅科技攻关计划项目(20150313016-1)

摘　　要：为全面了解山西省黄土山区运营桥梁下部水毁概况及其成因,采用现场调研、数理统计方法,针对山西省典型黄土山区4条高速公路、174座桥梁桥址水毁的基本特征进行了广泛收集,结合山西省黄土山区地质、地形地貌、水文气候特点及桥址排水设计、施工、管理养护等资料对水毁成因进行系统分析,揭示了桥梁下部水毁演变过程基本规律,对运营及新建桥梁提出了工程技术建议。研究结果认为:桥址水毁演变最终导致桥梁墩台桩基不同程度外露,极易发生潜在灾害危险,危及桥梁下部结构及运营安全。For comprehensively understand the general situation of drainage washout for in-service bridge in loess hills of Shanxi province,basic features of bridge site drainage washout of 4 expressways,174 bridges in typical hilly area of Shanxi province were widely collected by means of site investigation and mathematical statistics.The cause of washout was systematically analyzed combined with the geology,topography and geomorphology,characteristic of hydrological and climate of loess hilly area of Shanxi province and the information of drainage design,construction and maintenance management in bridge site.Which reveal the general law of washout developing process of bridge substructure,then put forward some engineering suggestions for in-service and constructing bridge.The results show that washout developing in bridge site finally inducing exposure of pile foundation of pier and abutment,and gestating potential hazard risk.Which endanger bridge substructure and in-service significantly.

关 键 词：黄土山区 桥梁 下部结构 桩基 水毁 

分 类 号：U447[建筑科学—桥梁与隧道工程]