广珠城际轨道交通连续梁桥徐变观测与分析.pdf
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第29卷第23期 企业技术开发 2010年12月
No.23 DEVELOPMENTOFENTERPRISE DP,C.20lO
V01.29 TECHNOLOG,ICAL
广珠城际轨道交通连续梁桥徐变观测与分析
罗枭
(中国中铁二十五局集团有限公司,广东广州510600)
摘要:桥梁的徐变变形控制是城际轨道质量控制的重点,为了满足轨道梁对变形的高精度要求,保证城际轨道安全、
稳定运营,文章以广珠城际轨道交通外海特大桥为工程背景,对城际轨道支架预压现浇三跨连续梁进行徐变变形观测,
进行徐变仿真分析,验证设计、施工的合理性,并提出相关建议,为今后类似工程施工提供借鏊。
关键词:城际轨道;连续粱桥;支架现浇;徐变;仿真分析
中图分类号:TU753.3 文献标识码:A
Observationand of ofthe rail
intercity
analysiscreep Guangzhou-Zhuhai
continuous
transportationbridge
LU0Xiao
(China 25thBureau 510600,China)
Railway GroupCo.LId.,Guangzhou。Guangdong
Abstract:Controlof deformationofthe isthefocusof rail contr01.Inordertomeetthe of
bridge quality requirements
creep inter-city
the onthedeformationoftherail en$urethe and tookthe
highprecision beam,to securitystabilityoperations,we
rail outsidethesea鹊the the deformationofthe castbracketofthe
background.observing
intercitybridge project creep preloading
beam ofthe rail.Thenwedid simulationand the the
continuous statistics,to
three-span bridge inter-city creeping analyzed verify
ofthe andconstruction,andto forfuturesimi
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