新建市政道路下穿高铁桥梁地下水位及止水措施的安全控制技术  

Safety Control Technology of Municipal Road Underpassing High-speed Railway Bridge for Groundwater Level and Waterproofing Measures

作　　者：王舜尧 WANG Shun-yao(China Railway Fifth Survey and Design Institute Group Co.,Ltd.,Beijing 102600,China)

机构地区：[1]中铁第五勘察设计院集团有限公司,北京102600

出　　处：《价值工程》2024年第11期150-153,共4页Value Engineering

摘　　要：本文以廊坊市艺术大道下穿京沪高铁工程为研究对象,旨在探究在有地下水时下穿高速铁路框架桥工程是否能满足2mm沉降标准。利用MIDAS GTS软件建立有限元模型,研究了降水对地面沉降及桥墩的影响。结果显示,降水的影响范围可达200m以上,导致地面沉降远超高铁沉降控制标准。只有采用全封闭止水措施时,桥墩的沉降能够满足要求,但仍需控制其他因素引起的变形。本研究成果指出了在类似工程中应用全封闭止水的必要性,并提供了艺术大道下穿工程最大沉降为-1.3mm的实际应用案例,为类似工程提供了有益的借鉴和参考。This study investigates the feasibility of achieving a 2mm settlement standard for the Yishu Avenue underpass beneath the Beijing-Shanghai high-speed railway in Langfang City,considering the presence of groundwater.Utilizing MIDAS GTS software,a finite element model was constructed to assess the impact of precipitation on ground settlement and bridge piers.Results reveal that precipitation effects extend over 200m,causing ground settlement exceeding high-speed rail standards.Only with full enclosure waterproofing measures can pier settlement meet requirements,necessitating control of other deformation factors.This research emphasizes the necessity of full enclosure waterproofing in similar projects and provides a practical case study with a maximum settlement of-1.3mm for the Yishu Avenue underpass,offering valuable insights for similar endeavors.

关 键 词：市政道路 高速铁路 沉降 下穿工程 止水 降水 

分 类 号：TU753[建筑科学—建筑技术科学]