某超高层建筑核心筒模架施工关键技术研究

发布时间：2018-03-07 06:21

本文选题：超高层建筑　切入点：核心筒　出处：《西安工业大学》2017年硕士论文　论文类型：学位论文

【摘要】：超高层建筑是经济发展、科技进步以及社会需求的结晶,当今世界,尤其是亚太地区超高层建筑如火如荼,大有"欲与天公试比高"之势。超高层建筑的高速发展得益于人们对结构体系认识的不断深化,结构体系的选型,直接决定了建筑结构工期、开发商资金周转速率、施工单位施工进度等问题。框架-核心筒体系综合了抗侧力体系与承重体系的优点,满足了当前超高层建筑综合化、智能化、生态化和异形化等发展趋势,而模架施工技术又是核心筒剪力墙施工的关键技术。顶升钢平台模架技术作为一种机械化程度较高的超高层建筑核心筒施工模板工程技术,其诞生与应用,为大幅缩短工程建设周期、提高经济性提供了可能。对于结构形式复杂多变、施工技术质量要求高的超高层建筑而言,出于工程安全控制的要求,施工方往往要准确了解顶模体系的受力特性和工作性能。因此,对于超高层建筑核心筒顶模技术的研究及探讨非常必要且及时。本文以某超高层建筑T1塔楼工程项目一核心筒模块化低位少支点整体式顶升钢平台模架体系为背景,通过利用有限元软件Midas Gen对工程施工阶段所使用的核心筒顶升钢平台模架体系和支承箱梁系统建模计算分析,得到了主次桁架、钢立柱以及支承箱梁在施工工况、顶升工况、提升工况和停工工况的应力和变形云图;进而对不同工况下模型计算结果进行对比分析,分别指出了不利荷载工况对钢平台系统主次桁架、钢立柱的影响。本文主要采用了实际案例分析及证明的研究方法,提出了超高层建筑核心筒施工中顶模体系在设计过程中的选型原则;结合T1塔楼核心筒结构特点,确定采用模块化低位少支点整体式顶升钢平台模架体系,并完成了顶模体系各系统的设计;以工程实际操作为基础,阐述了顶模体系的工作原理,提出了标准层下顶模体系的爬升工艺流程及相关质量保证措施;提出了模板及顶模架体节点处理的问题及解决措施,重点对模板的纠偏纠扭及垂直度控制进行了方案设计。本文基于T1塔楼核心筒剪力墙施工,对顶模体系进行了一系列研究,具有一定工程参考价值,希望能为今后相关领域的研究提供一定的支持。
[Abstract]:Super high-rise buildings are the crystallization of economic development, scientific and technological progress and social needs. Today's world, especially in the Asia-Pacific region, is in full swing. The rapid development of super-tall buildings benefits from the deepening of people's understanding of the structure system and the selection of structural systems, which directly determines the construction time limit and the turnover rate of developer funds. The frame-core tube system integrates the advantages of the anti-lateral force system and the load-bearing system, and meets the development trends of the super high-rise building such as synthesis, intelligence, ecology and heterogeneity. The formwork construction technology is the key technology of the core tube shear wall construction. As a kind of high mechanization construction formwork technology for the core tube of the super high-rise building, the technology of lifting steel platform formwork is born and applied. It provides the possibility for shortening the construction period and improving the economy. For the super high-rise building with complex structure form and high quality of construction technology, it is necessary to control the safety of the project. The constructors often need to understand accurately the mechanical characteristics and working performance of the top die system. It is very necessary and timely to study and discuss the technology of top mould of core tube of super high-rise building. This paper takes the mould frame system of low position and low fulcrum of core tube as the background of a project of T1 tower of super high-rise building. By using the finite element software Midas Gen to model and calculate the mould frame system and the supporting box girder system of the steel platform used in the construction stage, the main and secondary truss, the steel column and the supporting box girder are obtained in the construction condition and the jacking condition. The stress and deformation cloud diagram of lifting and shutdown conditions, and the comparison and analysis of the model calculation results under different working conditions, respectively pointing out the adverse load conditions on the steel platform system primary and secondary truss, This paper mainly adopts the research method of practical case analysis and proof, puts forward the selection principle of top formwork system in the design process of core tube construction of super high-rise building, and combines the characteristics of core tube structure of T1 tower building, The mold frame system of modular low stand low fulcrum integral lifting steel platform is adopted, and the design of each system of top die system is completed, and the working principle of top die system is expounded on the basis of practical engineering operation. The climbing process and quality assurance measures of the top die system under the standard layer are put forward, and the problems and solutions of the joint treatment of the formwork and the top die frame are put forward. In this paper, based on the construction of shear wall of core tube of T1 tower, a series of research on top formwork system is carried out, which has certain engineering reference value. Hope to provide some support for future research in related fields.
【学位授予单位】：西安工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU974

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