水上拌合平台设计与施工管理措施

发布时间：2018-03-14 18:43

本文选题：温州大门大桥　切入点：水上拌合平台　出处：《清华大学》2015年硕士论文　论文类型：学位论文

【摘要】：跨海大桥是连接岛屿和陆地的一种主要交通形式。近些年来,随着我国综合国力的增强,为加强沿海开发,整合近海资源,各类跨海大桥不断兴建。这些桥梁造型雄伟,造价高昂,同时兼具交通与观赏等多种功能。然而由于海上施工作业时的水文,风浪,气侯,温度等多种因素的不确定性,大型施工设备往往难以抵达,因此对施工提出了较高的要求。温州大门大桥是连接乐清市与小门岛的跨海大桥,全线长约9.32公里,其中大门大桥长约6135米。该桥是全国首座同步通路、通水、通电的跨海桥梁,对小门岛的经济发展具有战略性意义。本项目属于全线的控制性工程。总长586m,为温州大门大桥一期工程第2合同段主桥部分下部施工。温州大门大桥的桥梁结构形式为135m+316m+135m斜拉桥,采用双主塔结构。首先,本文通过对温州大门大桥项目进行综合性统筹分析,找出制约项目进展的几个关键性技术难点:海上混凝土供应技术难点,大体积承台施工技术难点、主塔施工技术难点。由于海上混凝土供应方式的选择,直接关系到施工的进度、安全、质量,成为工程控制的关键节点。因此,本文着重对此方面进行重点剖析,结合国内相应的施工方法,从成本、工期、施工难度等方面比较,最终选择了通过搭建水上拌合平台的方式进行混凝土的供应。其次,本文设计出两种水上拌合平台的设计方案,并从经济上进行比选从而选定了最终实施方案。针对此方案施工过程中出现的问题,从技术和管理两方面着手,应用PDCA质量管理理论,通过人员和机械的合理组织和科学管理,圆满实施了预定的方案并实现资源配置的最优化。最后,本文通过总结,跟现有的海上混凝土供应方式进行对比,事实证明通过此方案的实施,节省了施工成本,缩短了工期,并通过钢材等的回收利用,为资源的节能减排做出了贡献。本文希望通过对水上拌合平台这一较为新型的海上混凝土供应施工工艺的分析与研究,能够总结出一套综合性的施工方法和对应的质量保证体系措施,从而为今后类似的跨海大桥施工提供借鉴。
[Abstract]:The cross-sea bridge is a major form of transportation linking islands and land. In recent years, with the strengthening of China's comprehensive national strength, in order to strengthen coastal development and integrate offshore resources, various kinds of cross-sea bridges have been built. These bridges are of magnificent shape. The cost is high, and it has many functions, such as transportation and viewing. However, due to the uncertainty of hydrology, wind, weather, temperature and other factors in offshore construction, large construction equipment is often difficult to reach. Therefore, higher requirements have been put forward for construction. Wenzhou Gate Bridge is a sea crossing bridge connecting Yueqing City and Xiaomen Island. The whole line is about 9.32 kilometers long, of which the gate bridge is about 6135 meters long. The bridge is the first synchronous access road in the country with water supply. An electrified bridge across the sea, It is of strategic significance to the economic development of Xiaomen Island. This project belongs to the control project of the whole line. The total length of the project is 586 m, which is the construction of the lower part of the main bridge in the second contract section of the first phase of Wenzhou Gate Bridge. Bridge structure of Wenzhou Gate Bridge. In the form of 135m 316m 135m cable-stayed bridge, The structure of double main tower is adopted. Firstly, through the comprehensive analysis of the project of Wenzhou Gate Bridge, this paper finds out several key technical difficulties that restrict the progress of the project: the technical difficulty of offshore concrete supply, the technical difficulty of construction of large volume cap, The main tower construction technical difficulty. Because the choice of the sea concrete supply mode directly relates to the construction progress, the safety, the quality, becomes the key node of the project control, therefore, this article emphatically carries on the key analysis to this aspect, Combined with the domestic construction methods, from the cost, duration, construction difficulty and other aspects of comparison, the final choice through the construction of water mixing platform for the supply of concrete. Secondly, In this paper, the design scheme of two kinds of water mixing platform is designed, and the final implementation scheme is selected by comparing and selecting economically. In view of the problems in the construction process of this scheme, the technical and management aspects are discussed. With the application of PDCA quality management theory, through the rational organization and scientific management of personnel and machinery, the predetermined scheme is successfully implemented and the optimization of resource allocation is realized. Compared with the existing marine concrete supply mode, facts have proved that through the implementation of this scheme, the construction cost is saved, the construction period is shortened, and the steel is recycled. This paper hopes to analyze and study the construction technology of water mixing platform, which is a new type of offshore concrete supply technology, which has contributed to the energy saving and emission reduction of resources. It can sum up a set of comprehensive construction methods and corresponding quality assurance system measures, thus providing reference for similar bridge construction in the future.
【学位授予单位】：清华大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U445.33

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