摘要
大跨度矮塔斜拉桥易受温度、风荷载及二期恒载影响产生变形,对桥上无砟轨道高精度铺设构成挑战。本文依托京台高速特大桥(38+120+228+120+38)m矮塔斜拉桥工程,研究CRTS双块式无砟轨道线形控制技术,通过构建监测体系、修正理论模型、创新控制策略及优化施工工艺,形成适配该类桥梁的线形控制体系。实践证明,该体系可提升轨道施工精度与长期平顺性,为同类工程提供技术参考。
Large span low tower cable-stayed bridges are susceptible to deformation caused by temperature,wind loads,and secondary dead loads,posing a challenge to the high-precision laying of ballastless tracks on the bridge.This article relies on the Beijing Taiwan Expressway Extra Large Bridge(38+120+228+120+38)m low tower cable-stayed bridge project to study the CRTS double block ballastless track alignment control technology.By constructing a monitoring system,modifying theoretical models,innovating control strategies,and optimizing construction processes,a alignment control system suitable for this type of bridge is formed.Practice has proven that this system can improve the accuracy and long-term smoothness of track construction,providing technical reference for similar projects.
作者
刘卫朋
LIU Wei-peng(Construction Headquarters of Hefei Railway Hub Project of China Railway Shanghai Group Co.,Ltd.,Hefei 230000,China)
出处
《价值工程》
2026年第7期116-118,共3页
Value Engineering
关键词
矮塔斜拉桥
无砟轨道
线形控制
模型修正
相对标高法
CPⅢ控制网
low tower cable-stayed bridge
ballastless track
linear control
model correction
relative elevation method
CP III control network
