苏通大桥主塔施工进度与质量综合控制研究

发布时间：2018-04-05 01:33

本文选题：主塔施工　切入点：进度控制　出处：《重庆交通大学》2014年硕士论文

【摘要】：近年来随着公路桥梁建设项目的不断增加,桥梁施工过程中的进度与质量协调控制问题也逐渐显现出来,如何科学有效的组织施工进度和保证工程质量是现代桥梁施工企业面临的主要问题。桥梁施工进度与质量的协调控制是保证施工顺利进行、提高工程质量、加快施工进度的重要手段,更是有效提高施工企业市场竞争力的关键。本文首先介绍了国内外特大跨江跨海斜拉桥的施工技术特点,分析总结了斜拉桥主塔施工中遇到的主要问题,提出了大型斜拉桥主塔施工质量和进度协调控制的具体解决方法和策略,即①超高高度的混凝土泵送的质量问题分析与解决方法；②受风力影响的主塔施工的质量问题及解决方法；③混凝土耐久性的质量问题及解决方法；④爬模系统配备问题与选择；⑤施工过程中进度控制的要点。这些方法和策略对类似斜拉桥的主塔施工中进度和质量控制提出指导意义。其次根据斜拉桥主塔施工工艺和施工过程中的遇到的典型问题,提出将排队论引入斜拉桥主塔施工中,建立了斜拉桥主塔施工进度与质量综合控制AB模型,并从①液压爬模系统提升速度和服务时间；②钢筋工程绑扎进度与质量监督；③混凝土一次性浇筑体积与养生时间这三方面对主塔施工系统的优化提出了意见。最后,依托苏通长江大桥工程主塔施工,验证斜拉桥主塔施工进度与质量综合控制AB模型的有效性和适用性,同时从时间效率,经济效益和社会效益三方面对其进行了评价。
[Abstract]:In recent years, with the continuous increase of highway and bridge construction projects, the problem of coordinated control of progress and quality in the process of bridge construction has gradually emerged.How to organize the construction schedule scientifically and effectively and ensure the engineering quality are the main problems faced by the modern bridge construction enterprises.The coordinated control of bridge construction progress and quality is an important means to ensure the smooth construction, improve the engineering quality and speed up the construction progress. It is also the key to effectively improve the market competitiveness of construction enterprises.This paper first introduces the construction technical characteristics of the cable-stayed bridge across the river at home and abroad, and analyzes and summarizes the main problems encountered in the construction of the main tower of the cable-stayed bridge.The concrete solution and strategy of coordinated control of construction quality and schedule of the main tower of large cable-stayed bridge are put forward, that is, the analysis and solution of the quality problem of the concrete pumping system of super high height;2 the quality problem and solution of main tower construction affected by wind force, the quality problem of concrete durability of No.3 concrete and the solution to the problem of installation of No. 4 climbing formwork system and the key points of schedule control in the selection of No. 5 construction process.These methods and strategies provide guidance for progress and quality control in the construction of the main tower similar to cable-stayed bridges.Secondly, according to the construction technology of cable-stayed bridge main tower and the typical problems encountered in the construction process, the queuing theory is introduced into the construction of the main tower of cable-stayed bridge, and the AB model of construction schedule and quality comprehensive control of the main tower of cable-stayed bridge is established.Suggestions on optimization of construction system of main tower are put forward from three aspects: (1) hydraulic climbing formwork system lifting speed and service time ~ (2) reinforcing bar engineering binding progress and quality supervision, and (3) concrete one-off pouring volume and health preservation time.Finally, based on the construction of main tower of Sutong Yangtze River Bridge, the validity and applicability of AB model for construction schedule and quality control of cable-stayed bridge are verified. At the same time, it is evaluated from three aspects: time efficiency, economic benefit and social benefit.
【学位授予单位】：重庆交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U445.4

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