大吨位钢结构多吊点非对称整体提升施工控制技术研究

发布时间：2018-11-01 11:43

【摘要】：近年来,随着我国建筑事业的迅猛发展,各种大型和大跨度空间钢结构公用设施也因此得到越来越广泛的应用。例如大型体育馆、飞机库、展览馆、大剧院、超高层等,各种大跨度大空间结构在全国大量兴建。这些公共设施体积大、跨度大、质量重、安装精度高、施工高度高，这类建筑往往成为城市的标志性建筑，这无疑对施工工艺与技术有了更高更严格的要求。因此研究和应用大型和大跨度空间钢结构安装新技术，对加快我国社会主义现代化建设具有十分重要的现实意义。本论文结合具体工程实例佛山地铁金融城钢连廊整体提升施工监控项目，针对大吨位钢结构整体提升施工中的不对称提升情况下，存在的如下施工控制问题进行了一些的探讨与研究。主要研究内容和成果有：（1）阐述了大型钢结构整体提升施工控制的主要内容，采用了数值仿真模拟分析技术进行基础性研究，结合参数分析方法进行方案优化与控制决策，并通过实测数据检验了研究成果的有效性。将理论研究成果应用于具体工程实际，解决了工程技术难题，确保了工程的顺利实施。同时也为钢结构的非对称整体提升施工控制提供了理论基础与可参考性方案。（2）采用CSI的SAP2000有限元分析软件作为基本分析工具，利用SAP2000中的施工阶段分析技术，采用考虑P-△效应的非线性分析方法进行施工过程的仿真分析模拟。分析了该钢结构连廊整体提升过程中受力反应、变形状况和结构稳定性以及吊点的反力等。用以正确指导施工，确保该钢连廊整体提升时受力满足设计要求。（3）结合分析计算模型和现场应变监测数据，得到了适用于吊点非对称布置情况下整体提升施工过程模拟分析方法；针对吊点非对称布置情况的整体提升方法的优化措施；得出了吊点非对称布置情况下，整体提升过程中各吊点提升不同步的影响规律和控制策略，以及地面进行钢结构整体拼装时的预变形控制策略。对同类型大吨位多吊点非对称结构整体提升的施工控制有一定的参考意义。
[Abstract]:In recent years, with the rapid development of the construction industry in China, a variety of large-scale and large-span spatial steel structure utilities have been more and more widely used. For example, large gymnasium, hangar, exhibition hall, grand theater, super-high-rise and so on, all kinds of large-span and large-space structures are built in large quantities throughout the country. These public facilities have large volume, large span, heavy mass, high installation precision and high construction height. These kinds of buildings often become the iconic buildings of the city, which undoubtedly have higher and stricter requirements for the construction technology and technology. Therefore, it is of great practical significance to study and apply the new installation technology of large and long-span spatial steel structures to accelerate the construction of socialist modernization in China. This paper combined with a concrete project example of Foshan Metro City Steel Corridor overall lifting construction monitoring project, in view of the large tonnage steel structure overall lifting in the case of asymmetric lifting, The following construction control problems are discussed and studied. The main research contents and results are as follows: (1) the main contents of construction control of large steel structure are expounded, and the basic research is carried out by using numerical simulation and analysis technology. The method of parameter analysis is used to optimize the scheme and control decision, and the validity of the research results is verified by the measured data. The theoretical research results are applied to the practical engineering to solve the engineering technical problems and ensure the smooth implementation of the project. At the same time, it also provides the theoretical basis and referential scheme for the construction control of asymmetric integral hoisting of steel structure. (2) the SAP2000 finite element analysis software of CSI is used as the basic analysis tool, the construction stage analysis technology in SAP2000 is used, and the nonlinear analysis method considering the P- effect is used to simulate the construction process. The stress response, deformation, stability of the structure and the reaction force of the hoisting point are analyzed during the whole lifting process of the steel structure veranda. To guide the construction correctly, to ensure that the overall lifting of the steel corridor force meets the design requirements. (3) based on the analysis and calculation model and the field strain monitoring data, the simulation analysis method for the whole hoisting construction process under the condition of asymmetrical arrangement of hoisting points is obtained, and the optimization measures for the whole lifting method for the unsymmetrical arrangement of hoisting points are obtained. The influence law and control strategy of lifting points in the whole lifting process are obtained under the condition of asymmetric arrangement of hoisting points, and the control strategy of pre-deformation when the steel structure is assembled on the ground. It has certain reference significance for the construction control of the same type of large tonnage multi-point asymmetric structure.
【学位授予单位】：长沙理工大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU758.11

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