摘要
随着道路建设标准的提高,采用转体法施工的桥梁跨度和宽度越来越大,转体吨位屡创新高。结合大河路跨越既有郑焦城际、京广铁路转体T形刚构桥施工,对3万t T构梁体施工及转体方案和支架法现浇、中跨合龙,以及转体施工过程中既有线封锁点、球铰、滑道和撑脚、砂筒、牵引装置、助推装置等施工关键技术进行了分析。工程实践表明,该技术具有极高安全性,缩短了工期,降低了成本,经济与社会效益显著。
With the improvement of road construction standards, the span and width of the bridge constructed by means of turning-body method have become larger and larger, and the turning-body tonnage reaches new highs repeatedly. Combined with the construction of Dahe Road crossing existing Zhengzhou-Jiaotong Intercity Railway and Beijing-Guangzhou Railway swivel T-shaped rigid frame bridge, the construction of 30 000 T-shaped beam, swivel scheme, cast-in-situ construction with support method, mid span closure, as well as the key construction technologies of the existing line, such as blocking points, ball hinges, slideways and supporting foot, sand cylinders, traction devices, booster devices and so on, are analyzed. The engineering practice shows that this technology has high safety, shortens the construction period, reduces the cost, and has remarkable economic and social benefits.
作者
殷爱国
YIN Aiguo(China Railway Seventh Group Co.,Ltd.,Zhengzhou,Henan 450000,China)
出处
《施工技术（中英文）》
CAS
2022年第6期46-49,共4页
Construction Technology
基金
中铁七局集团有限公司科技研发课题:跨既有高铁多股道大吨位梁转体施工关键技术研究与应用(18A13)。
关键词
桥梁工程
刚构桥
T构
转体
施工技术
bridges
rigid frame bridges
T-frame
rotation
construction
