大跨度空间钢结构施工过程力学分析与监控

发布时间：2018-03-08 20:00

本文选题：空间钢结构　切入点：施工技术　出处：《合肥工业大学》2017年硕士论文　论文类型：学位论文

【摘要】：近年来,随着我国大跨度空间结构的广泛应用,相应的施工技术与方法也得到了快速发展与推广。本文对现有大跨度空间结构成熟的施工工艺进行了调查和归纳。对其中主要的施工技术问题做了进一步的分析探讨,以求更为高效、科学、适用的施工方法得到借鉴,从而实现整个行业对于类似结构施工技术水平的提升。本文以霍邱体育馆屋盖结构工程建设项目为研究背景,阐述了大跨度空间结构施工方案的优选、施工全过程力学分析、施工监控以及卸载施工等内容。通过实际工程的建设,验证相应施工方法、有限元分析及监控系统的正确性与科学性。本文开展的相关力学分析与监控研究,旨在形成大跨度空间钢结构施工与监控的典型方案,为类似工程建设提供借鉴与参考。论文主要研究内容如下:(1)屋盖钢结构施工全过程施工方法的研究明确了钢结构屋盖工程的研究背景、场地条件、结构施工要求等内容,并根据各类施工方案的可行性及经济适用性比较的结果,从而确认了该工程全过程累积滑移施工方法。(2)屋盖结构施工全过程力学分析屋盖结构施工全过程由安装阶段和卸载阶段两大部分组成,文中采用MIDAS/Gen有限元软件对施工过程每个工况进行模拟分析,依据有限元分析结果,对累积滑移施工法和卸载法的安全性和可行性进行了分析和讨论。(3)屋盖结构施工全过程监控系统的建立基于屋盖结构施工全过程有限元力学分析结果,综合考虑结构内部杆件位置、类别的差异,对施工过程中关键构件应力和关键节点位移实施了监测。详细阐述了施工过程监测系统的组成、测点布置和监控系统的关键要点。(4)给出了施工过程屋盖结构应力与位移的实测值与计算值对比分析文中对钢结构屋盖施工过程中的关键构件工作应力和位移进行了监测,并将关键构件工作应力和位移的实测值与有限元理论计算值进行了对比和分析。两者结果吻合较好,表明本文中所采用的施工方法、力学分析和施工监控方法的正确性和有效性。
[Abstract]:In recent years, with the wide application of large span spatial structures in China, The corresponding construction techniques and methods have also been rapidly developed and popularized. In this paper, the existing mature construction technology of long-span spatial structures is investigated and summarized. The main construction technical problems are further analyzed and discussed. In order to obtain more efficient, scientific and applicable construction methods for reference, so as to realize the upgrading of the construction technology level of similar structures in the whole industry. This paper takes the roof structure construction project of Huoqiu Gymnasium as the research background. This paper expounds the optimal selection of the construction scheme of the large span space structure, the mechanical analysis of the whole construction process, the construction monitoring and unloading construction, etc. The corresponding construction methods are verified through the construction of the actual project. The finite element analysis and monitoring system is correct and scientific. The related mechanical analysis and monitoring research carried out in this paper aims to form a typical scheme for the construction and monitoring of large-span spatial steel structures. The main contents of this paper are as follows: 1) the whole construction method of steel roof structure is studied. The research background, site conditions, construction requirements and so on of steel roof engineering are clarified. And according to the feasibility and economic applicability of various construction schemes, The mechanical analysis of the whole process of roof structure construction consists of two parts: installation stage and unloading stage. In this paper, MIDAS/Gen finite element software is used to simulate and analyze each working condition in the construction process, and according to the results of finite element analysis, The safety and feasibility of the cumulative slip construction method and the unloading method are analyzed and discussed. The establishment of the monitoring system for the whole construction process of the roof structure is based on the finite element mechanical analysis results of the whole construction process of the roof structure. Considering the position and category difference of the internal members of the structure, the stress and displacement of the key members in the construction process are monitored. The composition of the monitoring system for the construction process is described in detail. The key point of the measuring point arrangement and monitoring system. 4) the stress and displacement of the roof structure during construction are compared and analyzed. In this paper, the working stress and displacement of the key members in the construction process of steel structure roof are monitored. The measured values of the working stress and displacement of the key members are compared and analyzed with the calculated values of the finite element theory. The results agree well with each other, which indicates that the construction method used in this paper is very good. Correctness and effectiveness of mechanical analysis and construction monitoring methods.
【学位授予单位】：合肥工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU758.11

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