某大型复杂结构施工控制研究

发布时间：2019-03-26 09:46

【摘要】：随着我国经济的蓬勃发展，重大工程项目的建设日益增多，结构形式也越来越多样化，其中包括高耸结构、大跨结构、超高层结构、大型复杂结构等。目前，设计和施工人员对大型复杂结构的施工技术及在施工过程中表现出的诸多力学问题已经越来越重视。工程规模的扩大化、结构体系的复杂化也对结构的施工控制提出了更高的要求，然而传统的施工控制方法已经不能很好的满足大型复杂结构施工建造的现实需求。应用施工过程仿真分析技术开展施工方案比选和结构线型控制研究是实现大型复杂结构施工控制的重要手段，对研究大型复杂结构的施工问题具有重大意义。广东兴业仓储科研主楼这一大型复杂结构，造型独特，建筑立面为立放的巨型玉璧，结构形式新颖，将大悬挑结构、钢框架结构、空间大跨度结构、桁架结构融为一体。其结构组成包含：核心筒、外斜撑框架、内钢框架、转换桁架、外伸刚臂和组合楼板。该结构的施工工序复杂、施工技术难点多，节点和构件的空间定位、制作安装精度要求高，结构施工控制难度大。本文基于“广东兴业仓储科研主楼”这一工程背景，介绍了大型复杂结构施工控制研究的技术基础——“施工过程仿真分析方法”的基本原理与实现步骤。为解决施工控制中的“安全控制、造价控制、工期控制、环境保护控制及结构线型控制”问题，本文开展了基于仿真分析技术的施工方案比选与结构线型控制研究。通过理论分析数据和现场实测数据的对比，检验了施工过程是否达到“安全控制”与“结构线型控制”目标。本文的主要工作和结论包括： (1)总结了国内外大型复杂结构施工控制研究的进展。针对工程实际，介绍了兴业仓储科研主楼的结构体系组成特点，提出了施工中亟需解决的主要问题。 (2)总结了施工过程仿真分析的基本原理与大型复杂结构进行施工过程仿真分析的必要性。概括了施工过程仿真分析方法在通用有限元软件Midas/gen中的实现方法。广东兴业仓储科研主楼有限元模型的建立、施工阶段荷载的定义和施工阶段的划分，为后续开展施工方案比选和结构线型控制工作奠定了基础。 (3)基于施工过程仿真分析技术，为实现结构施工的“安全控制、造价控制、工期控制和环境保护控制”，对兴业仓储科研主楼不同施工方案的“安全可行、经济合理、节省工期、保护环境”四个指标进行了对比分析，比选出了综合效益高的施工方案。具体对比分析了大悬挑子结构、平面桁架子结构、大跨度转换桁架子结构、核心筒较外框架提前施工层数、伸臂桁架固结顺序、楼板浇筑顺序和后浇带设置的不同施工方案。 (4)基于施工过程仿真分析技术，为实现结构施工的“结构线型控制”，对兴业仓储科研主楼不同子结构的“关键节点位移变化历程”进行了分析，提出了施工过程中结构线型控制的预抛（预偏）值和控制措施。具体分析了外环和内环大圆子结构、大悬挑子结构、平面桁架子结构、大跨度转换桁架子结构。 (5)从施工监测的目的、方法、内容三个方面介绍了广东兴业仓储科研主楼的监测工作。对各施工阶段结构的关键节点和构件的位移（沉降）、应力进行了跟踪监测，并对相关测量数据及误差进行了处理。现场监测数据和仿真分析数据的对比分析表明，施工过程仿真分析是合理的，比选后的结构施工方案能够实现安全控制的目标，，结构的竣工线型能够实现标准圆的线型控制目标。
[Abstract]:With the vigorous development of our country's economy, the construction of the major engineering projects has become more and more diverse, including the high-rise structure, the large-span structure, the super-high-rise structure, the large complex structure and so on. At present, the design and construction personnel have paid more and more attention to the construction technology of the large complex structure and the many mechanical problems that have been shown in the construction process. The expansion of the scale of the project and the complication of the structural system have raised higher requirements for the construction control of the structure. However, the traditional construction control method can not meet the realistic demand of the construction of the large complex structure. It is of great significance to study the construction of large complex structure by using the construction process simulation and analysis technology to carry out the selection of construction scheme and structure line control. The large-scale complex structure of the main building of the storage and scientific research of Xingye in Guangdong is unique in shape, and the building facade is a giant jade wall which is vertically arranged, the structure is novel, the large-cantilever structure, the steel frame structure, the space large-span structure and the frame structure are fused to The structure comprises a core barrel, an outer inclined support frame, an inner steel frame, a conversion rotating frame, an outward extending rigid arm and a combination, The construction process of the structure is complicated, the construction technology is difficult, the space of the nodes and the components is positioned, the manufacturing and installation precision is high, and the structural construction control is difficult Based on the "Guangdong Xingye storage and scientific research main building" of this project, this paper introduces the basic principle of the technology base _ "Simulation and analysis method for construction process" for large-scale complex structure construction control research. In order to solve the "Safety control, cost control, construction period control, environmental protection control and structural line control" problem in the construction control, the construction scheme selection and construction line based on the simulation analysis technology are carried out in this paper. Based on the comparison of the theoretical analysis data and the on-site measured data, it is verified whether the construction process has reached the "safety control" and the "construction line control" target. The master of this article The work and conclusions are as follows: (1) It is a summary of the large and complex problems at home and abroad In view of the actual situation of the project, the structural system composition of the main building of the storage and scientific research of Xingye is introduced, and the application of the construction system is put forward. (2) The basic principle and the large complex structure of the simulation and analysis of the construction process are summarized. The necessity of the simulation and analysis of the construction process is carried out. The simulation analysis method of the construction process is summarized in the general finite element software M The realization method in idas/ gen. The establishment of the finite element model of the main building of the storage and scientific research main building of Xingye, Guangdong, the definition of the load at the construction stage and the division of the construction stage, and the comparison and selection of the subsequent construction scheme and based on the simulation and analysis technology of the construction process, the "It is safe and feasible, the economy is reasonable, the construction period is saved, the environment is protected," of the "Safety control, cost control, construction period control and environmental protection control" of different construction schemes of the building and scientific research main building is compared According to the analysis, the construction scheme with high comprehensive benefit is selected, the large-cantilever sub-structure, the flat-span frame sub-structure, the large-span switching frame-frame sub-structure, the outer frame of the core barrel and the outer frame of the outer frame are compared and analyzed in advance, the number of layers, the consolidation sequence of the extension arm and the support frame, the floor slab, (4) Based on the simulation and analysis technology of the construction process, to realize the safe and feasible construction of the structure, the economy is reasonable, the construction period is saved, the environment is protected, and the structure line control of the different sub-structures of the building and scientific research main building is analyzed, and the construction process is put forward. In this paper, the pre-polishing (pre-bias) value and control measures of the linear control of the medium structure are analyzed. The large-circle sub-structure of the outer ring and the inner ring and the large-cantilever sub-junction are analyzed. The sub-structure of the frame, the flat-span frame and the large-span switch-frame structure. (5) The purpose, the method, the inside and the outside of the construction monitoring, The paper introduces the monitoring of the main building of the storage and research of Xingye in Guangdong, and the displacement (settlement) and the stress of the key nodes and components in the construction stage. The tracking and monitoring are carried out, and the related measurement data and the error are processed. The comparison of the on-site monitoring data and the simulation analysis data shows that the simulation and analysis of the construction process is reasonable, which can achieve the purpose of safety control compared with the selected construction scheme.
【学位授予单位】：华南理工大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU765

【参考文献】