长株潭城际跃进湖段桥改隧方案评价与施工安全控制研究

发布时间：2018-06-15 18:37

本文选题：隧道工程 + 桥梁工程　；参考：《中南大学》2014年硕士论文

【摘要】：摘要：城际铁路线路通过城市中心地区时,常常会遇到江河湖海等水域的阻拦,或与已有的交通线路、建构筑物发生交叉重叠,选择桥梁还是隧道是一个十分复杂而有意义的问题,目前尚未有较好的方案优选的评价方法和模型。本文结合铁道部课题“长株潭城际铁路湘江隧道施工关键技术研究”(2011G013-C),针对长株潭城际跃进湖大桥改隧道工程,对城市中心地区跨水域桥隧方案优选的综合评价进行了初步研究,主要研究内容及成果如下： (1)通过比较分析各种评价方法的优缺点,结合桥隧方案优选的特点,确定采用层次分析法和模糊综合评价法相结合的模糊层次综合评价法作为桥隧方案优选评价方法。 (2)采用模糊层次综合评价法构建了城市中心地区跨水域桥梁和隧道方案优选的综合评价模型,从经济、技术、安全、环境、资源和社会等六个方面详细分析了桥隧方案优选的评价指标,构建了多层次结构的评价指标体系,利用层次分析法确定评价指标权重,并确定了定性指标和定量指标的隶属度。 (3)利用桥隧方案优选的评价模型对长株潭城际铁路跃进湖段跃进湖特大桥和盾构隧道方案进行综合评价,通过对评价结果的分析,得到了该工程段盾构隧道为较优方案。 (4)通过对盾构隧道侧穿过浏阳河和跃进湖段施工过程的数值模拟,分析了考虑流固耦合作用下盾构隧道施工的状态是安全的,并根据结果提出了施工安全控制措施,为将来工程顺利施工提供理论依据和建议。
[Abstract]:Absrtact: when intercity railway lines pass through the city center, they often encounter the blocking of rivers, lakes, seas and other waters, or overlap with existing traffic lines and structures. The choice of bridge or tunnel is a very complicated and meaningful problem. In this paper, the key technology of Xiangjiang tunnel construction of Changsha-Zhuzhou-Xiangzhou-Xiangjiang Railway, which is the subject of the Ministry of Railways, is studied in this paper, aiming at the transformation of Changsha-Zhuzhou-Zhuzhou-Jinghu Bridge into a tunnel project. This paper makes a preliminary study on the comprehensive evaluation of the optimal selection of bridge and tunnel schemes in urban central areas. The main research contents and results are as follows: 1) through comparative analysis of the advantages and disadvantages of various evaluation methods, combined with the characteristics of optimal selection of bridge and tunnel schemes, The fuzzy comprehensive evaluation method combined with the analytic hierarchy process and the fuzzy comprehensive evaluation method is adopted as the optimal selection and evaluation method for bridge and tunnel schemes. (2) A comprehensive evaluation method of fuzzy hierarchy process is used to construct the cross water in the urban central area. A comprehensive evaluation model for optimal selection of regional bridge and tunnel schemes, From six aspects of economy, technology, safety, environment, resources and society, the evaluation index of bridge and tunnel scheme is analyzed in detail, the evaluation index system of multi-level structure is constructed, and the weight of evaluation index is determined by AHP. The membership degree of qualitative index and quantitative index is determined. (3) Comprehensive evaluation of Yuejinhu super bridge and shield tunnel scheme of Changsha-Zhuzhou-Xiangtan inter-city railway leaping into lake section is carried out by using the optimal evaluation model of bridge and tunnel scheme. Through the analysis of the evaluation results, it is concluded that the shield tunnel in this section of the project is the best scheme. (4) the numerical simulation of the construction process of the shield tunnel side through the Liuyang River and the leaping lake section is carried out. It is analyzed that the construction state of shield tunnel under fluid-solid coupling is safe, and the construction safety control measures are put forward according to the results, which provide theoretical basis and suggestions for the smooth construction of the future project.
【学位授予单位】：中南大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U442.5;U455.43

【参考文献】