洞头峡跨海大桥非通航孔拦截体系施工技术研究

发布时间：2018-01-23 09:54

本文关键词： 跨海大桥防撞装置拦截体系施工技术　出处：《河北工程大学》2015年硕士论文　论文类型：学位论文

【摘要】：本文以洞头峡跨海大桥建设工程为背景,研究非通航孔船舶拦截体系施工技术与工艺。跨海大桥非通航孔船舶拦截体系的施工技术方式较多,常采用的施工技术有:人工岛方式、锚系浮体方式、浮围方式、群桩方式、薄壳筑沙围堰方式等。选择正确合理的施工技术并根据现场实际情况进行改进,对工程建设和后期运营具有重要的现实意义。洞头峡跨海特大桥全长2638.5米,本文通过对国内外各种桥梁防撞措施的分析,确定了该工程采用适用于海洋环境的拦截施工技术,包括:独立防撞墩、拦截索链、锚泊浮体、锚定垫块组成的拦截体系,为最经济合理的拦截体系组合形式;采用非线性有限元分析软件MSC/Patran模拟了独立防撞墩的防撞性能,运用Midas Civil软件对无封底承台钢套箱在各工况下进行建模分析,并对拦截索阻拦船舶的撞击模拟与受力分析,确定了拦截索的垂度,为拦截体系的施工提供了可靠依据;在此基础上详细分析并论述了独立防撞墩、钢浮体和拦截锁链等工程的施工工艺。
[Abstract]:Based on the construction project of Dongtou Gorge Bridge, this paper studies the construction technology and technology of non-navigable port ship interception system. There are many construction techniques for non-navigable port ship interception system of cross-sea bridge. The construction techniques often used include artificial island, anchor floating body, floating enclosure, pile group, thin shell sand cofferdam and so on. The correct and reasonable construction technology is selected and improved according to the actual situation of the site. Dongtou Gorge Bridge is 2638.5 meters in length. This paper analyzes the collision prevention measures of all kinds of bridges at home and abroad. The interception construction technology suitable for marine environment is determined, including: the interception system composed of independent anti-collision pier, intercepting cable chain, mooring floating body and anchoring cushion, which is the most economical and reasonable interception system combination form; The nonlinear finite element analysis software MSC/Patran is used to simulate the anti-collision performance of the independent anti-collision pier. Midas Civil software is used to model and analyze the steel jacket box without bottom cap under various working conditions, and the impact simulation and force analysis of the interceptor cable blocking ship are carried out, and the sag degree of the interceptor cable is determined. It provides a reliable basis for the construction of interception system. On this basis, the construction technology of independent collision pier, steel floating body and interceptor chain are analyzed and discussed in detail.
【学位授予单位】：河北工程大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U445.4

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