热力管线迁改对既有桥梁的影响研究  

THE IMPACT OF HEATING PIPELINE RELOCATION ON EXISTING BRIDGES

作　　者：刘晓勇 LIU Xiaoyong(China Railway 20th Bureau Group Southern Engineering Co.,Ltd.,Guangzhou 511300,China)

机构地区：[1]中铁二十局集团南方工程有限公司,广州511300

出　　处：《低温建筑技术》2025年第3期54-58,共5页Low Temperature Architecture Technology

摘　　要：文中旨在解决八一立交桥东侧南北向敷设的2×DN600热力管线对地铁施工造成的影响,提出将热力管线迁改至东慢车道桥人行道位置的方案。运用理论计算与数值模拟等多种手段,对现有立交桥的预制梁和桥墩等主要结构构件展开深入分析。研究结果显示,热力管线迁改后的立交桥在荷载作用下,预制梁和桥墩的承载力均能满足预期使用要求,可有效抵御施工期间可能出现的各类荷载条件。这一研究结论不仅验证了此迁改方案的有效性,还为类似工程施工提供参考方案。This paper aims to address the impact of the 2×DN600 heating pipelines laid in the north-south direction on the east side of the Bayi Overpass on subway construction and proposes a plan to relocate the pipelines to the sidewalk of the east slow-traffic bridge.By employing theoretical calculations and numerical simulations,an in-depth analysis is conducted on the main structural components of the existing overpass,including prefabricated beams and piers.The results indicate that after the pipeline relocation,the load-bearing capacity of the prefabricated beams and piers meets the expected usage requirements under applied loads,effectively withstanding various load conditions that may arise during construction.This research not only validates the feasibility of the proposed relocation plan but also provides the reference for similar engineering projects.

关 键 词：热力管线 预制梁 明敷过桥 

分 类 号：TU995[建筑科学—供热、供燃气、通风及空调工程]