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跨黄河156m钢桁梁顶推施工水中临时墩设计
引用本文:罗九林.跨黄河156m钢桁梁顶推施工水中临时墩设计[J].国防交通工程与技术,2014(4):18-23.
作者姓名:罗九林
作者单位:中铁第五勘察设计院集团有限公司,北京102600
摘    要:以新黄河特大桥156m钢桁梁顶推施工为例,论述如何在高含沙量、高流速条件下设计水中临时墩结构。从桥梁结构形式、特殊水文地质条件入手,分析了影响水中临时墩设计和施工的主要因素。提出了多种设计方案进行比较,并结合实际施工条件进行方案调整。同时讨论了设计水中临时墩的各最不利工况以及设计中需要注意的关键问题及解决方案。

关 键 词:顶推施工  揭底冲刷  水中临时墩

On the Design of Temporary Piers in Water for the Pushing Construction of the 156-m Steel Truss Spanning the Yellow River
Luo Jiulin.On the Design of Temporary Piers in Water for the Pushing Construction of the 156-m Steel Truss Spanning the Yellow River[J].Traffic Engineering and Technology for National Defence,2014(4):18-23.
Authors:Luo Jiulin
Institution:Luo Jiulin (The Fifth Survey and Design Institution Group Co. Ltd. of China Railway,Beijing 102600,China)
Abstract:With the pushing construction of the 156-m steel truss of the Yellow River mega bridge as a practical example,the design of temporary piers in water in the conditions of the high sediment concentration and the high flow rate is discussed in the paper.The major influential factors for the design and construction of temporary piers in water are analyzed from the angles of the bridge structure form and the special hydrogeological conditions.Various design schemes are presented and compared,and adjusted in the light of the actual construction conditions.Meanwhile,the most unfavorable conditions of for the design of temporary piers in water are discussed,and the key points for attention in the course of the design and solutions to them are proposed in the paper as well.
Keywords:pushing construction  bottom tearing  temporary pier
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