江顺大桥技术方案选择与项目评价研究

发布时间：2019-04-01 23:48

【摘要】：斜拉桥的结构体系由受拉的、索承压的塔以及承弯的梁体组合，是一种使用拉索直接将主梁拉在桥塔上的桥梁。斜拉桥在我国得到较为广泛的应用。本论文以江顺大桥工程为背景进行分析。首先，从路线方案与江门、顺德两地现有交通网络结合情况，桥梁与相邻大型构筑物之间的距离、工程总造价等方面对南、北桥位方案进行对比分析，考虑到北桥位能快速接入佛山市规划的干线公路网，且北桥位方案相邻西江特大桥、九江大桥距离均衡。推荐采用北桥位方案。其次，根据通航、水利要求及河床特征，桥梁主跨不小于700m；合适桥型为斜拉桥或悬索桥。本文采用实地调查、文献调研和比较分析等方法，提出H型斜拉桥，倒Y形斜拉桥和悬索桥3个桥型方案，在对技术难度、航道及水利适应性、维修和养护成本、建筑景观等方面综合分析后，本文建议采用H型斜拉桥桥型。本文一并对江顺大桥的引桥与交叉工程方案近期、远期考虑的要素进行分析。再次，本文对江顺大桥项目的多方面进行评价。在项目土地利用方面，该项目可能占用了耕地和基本农田。在工程环境影响方面，大桥施工期产生噪音、空气污染、水污染，以及对水上交通干扰；而运营期主要有来自汽车尾气空气污染和公路通道噪声污染。在项目节能影响方面：桥梁运营期间的照明和公路的养护大修等对于电能和燃油均有一定的消耗，但是该能源消耗量相对于使用者的能源消耗量较小。在项目社会影响方面：本项目的建设需要在公路沿线征用一定的土地和实施有限的房屋拆迁，对一些居民的生产和生活会造成一定的负面影响。经分析，本项目采取了积极有效的措施以达到节约集约用地的目的，能减少占用耕地和基本农田；对环境的不利影响在工程竣工后，将逐渐减小或消除；本项目的建设不会对区域能源供应造成不利影响，并且本项目建成通车后，缓解了通道交通压力；本项目在及时足额补偿支付拆迁款后，，被拆迁的居民有足够的资金和时间来重建住宅，确保了项目影响区的社会环境安定。该项目的研究对今后类似工程方案选择及评价具有一定的参考借鉴价值。
[Abstract]:The structure system of cable-stayed bridge is composed of tension, cable compression tower and bending beam body. It is a kind of bridge which is used to pull the main beam directly on the bridge tower. Cable-stayed bridges are widely used in China. This paper is based on the analysis of Jiangshun Bridge Project. First of all, from the route scheme and Jiangmen, Shunde two existing traffic network combination, the distance between the bridge and adjacent large-scale structures, the total cost of the project and other aspects of the south and north bridge plan is compared and analyzed. Considering that the north bridge site can quickly access the highway network planned by Foshan City, and the north bridge location scheme is adjacent to the Xijiang Bridge, the Jiujiang Bridge has a balanced distance. The North Bridge location scheme is recommended. Secondly, according to navigation, water conservancy requirements and river bed characteristics, the main span of the bridge is not less than 700 m, and the suitable bridge type is cable-stayed bridge or suspension bridge. In this paper, by means of field investigation, literature investigation and comparative analysis, three bridge-type schemes of H-type cable-stayed bridge, inverted-Y-shaped cable-stayed bridge and suspension bridge are put forward in terms of technical difficulty, adaptability of waterway and water conservancy, maintenance and maintenance cost. After comprehensive analysis of architectural landscape and other aspects, this paper proposes to adopt H-type cable-stayed bridge type. This paper also analyzes the short-term and long-term considerations of the approach bridge and the crossing project of Jiangshun Bridge. Thirdly, this paper evaluates many aspects of Jiangshun Bridge Project. On the land use side of the project, the project may occupy arable land and basic farmland. In the aspect of engineering environmental impact, noise, air pollution, water pollution and interference to water traffic are produced during the construction period of the bridge, and there are mainly air pollution from vehicle exhaust and noise pollution from road passage during the operation period. In the aspect of energy saving, lighting during bridge operation and maintenance and overhaul of highway have certain consumption of electric energy and fuel, but the consumption of this energy is smaller than that of users. In terms of the social impact of the project: the construction of the project requires expropriation of certain land along the highway and the implementation of limited house demolition, which will have a certain negative impact on the production and life of some residents. Through analysis, the project has taken active and effective measures to achieve the purpose of saving intensive land use, which can reduce the occupation of cultivated land and basic farmland, and the adverse effects on the environment will be gradually reduced or eliminated after the completion of the project. The construction of this project will not adversely affect the regional energy supply, and after the completion of the project, the traffic pressure of the passage will be alleviated. After the project paid in full and timely compensation, the displaced residents have enough funds and time to rebuild the house, ensuring the social environment of the affected area of the project is stable. The study of this project has certain reference value for the selection and evaluation of similar projects in the future.
【学位授予单位】：华南理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U442.54

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