移动模架局部结构改进及其在工程中的应用

发布时间：2018-04-11 11:38

本文选题：移动模架 + 液压自行　；参考：《山东大学》2015年硕士论文

【摘要】：随着我国高速公路及铁路建设的快速发展,连续箱梁桥移动模架施工工艺得到了广泛的应用,特别是在跨越江河、城市道路、天堑沟壑等复杂地形中的桥梁施工中其优点得到了充分的发挥。与其他混凝土桥梁施工工法对比,移动模架施工工法具有施工周期短、适用范围广、施工交通影响小、工序程序化、线形易于控制、不需要进行基础的处理、施工安全性高等优点,目前已成为多跨预应力混凝土连续箱梁施工首选的施工方法。首先,本文对移动模架的特点、分类及移动模架的国内外发展现状以及历史背景进行介绍,着重阐述了近年来移动模架在我国的发展,以及运用这种施工方法建造的各种公路铁路和跨海大桥,并对不同种类常用的移动模架的运行原理和工艺工程进行介绍。其次,以在建的五四湖大桥及浙江温州市大门大桥工程为研究对象,通过搜集和整理大量移动模架在施工过程中的相关材料,对上行式及下行式移动模架建立了三维模型,就模架基本构造和整体安装过程进行了详细论述。浙江温州大门大桥工程采用的液压自行MSS50ZX-1900移动模架对局部结构进行了改进,主要改进的结构为模架采用液压电气控制的自行牛腿以及新型C型梁系统,同时运用有限元分析软件ANSYS,针对局部改进的自行牛腿移动模架的主要受力部件主梁建立有限元模型,并对移动模架在首跨、标准跨和末跨三种不同的施工情况进行刚度强度和稳定性分析。自行牛腿移动模架这给施工带来的工的效率和质量,同时具有良好的经济效益；不仅解决了施工中起重设备无法到达、设备无法倒运的难题而且大大促进了移动模架的技术发展。再次,对移动模架的局部改进为石济客专项目中移动模架使用过程中增加配套变轨门式起重机进行阐述,该变轨龙门的增加,让移动模架在使用过程中不仅省去了吊装的费用,而且缩短了施工工期；加工工序不变的情况下,生产率也大大提高。
[Abstract]:With the rapid development of highway and railway construction in our country, the construction technology of moving mould frame of continuous box girder bridge has been widely used, especially in crossing rivers and city roads.The advantages of bridge in complex terrain such as cut and gully have been brought into full play.Compared with other concrete bridge construction methods, the moving formwork frame construction method has the advantages of short construction period, wide scope of application, small construction traffic impact, programmed working procedure, easy linear control, and no need for foundation treatment.High construction safety has become the preferred construction method for multi-span prestressed concrete continuous box girder construction.First of all, this paper introduces the characteristics, classification, development status and historical background of mobile die frame at home and abroad, focusing on the development of mobile die frame in China in recent years.This paper also introduces the operation principle and technological engineering of different kinds of common moving mould frames which are used to build various highway railways and bridges across the sea by using this construction method.Secondly, taking the Wusihu Bridge under construction and the Gate Bridge Project in Wenzhou, Zhejiang Province as the research object, through collecting and arranging a large number of materials related to the construction process of the moving die frame, the paper establishes a three-dimensional model of the uplink and downlink moving die frame.The basic structure of die frame and the whole installation process are discussed in detail.The local structure is improved by hydraulic self-moving MSS50ZX-1900 mould frame used in Zhejiang Wenzhou Gate Bridge project. The main improved structure is the self-supporting corbel with hydraulic and electrical control and a new type C beam system.At the same time, the finite element analysis software ANSYSis is used to establish the finite element model for the main beam, which is the main force component of the local improved self-moving corbel frame, and the moving die frame is in the first span.Stiffness strength and stability of standard span and final span are analyzed in three different construction conditions.The work efficiency and quality of the construction are brought about by the self-propelled corbel moving mould frame. At the same time, it has good economic benefits. It not only solves the problem that the lifting equipment can not be reached in the construction,The difficult problem of equipment can not be reversed and greatly promote the development of mobile mold frame technology.Thirdly, the local improvement of the mobile mould frame is described as the addition of the matching rail gantry crane in the use of the mobile mould frame in the Shiji special project. The increase of the rail gantry makes the mobile mold frame not only save the cost of hoisting in the process of use,Moreover, the construction period is shortened, and the productivity is greatly improved when the processing procedure is unchanged.
【学位授予单位】：山东大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U445.463

【参考文献】