超高层结构施工模拟及自爬模系统监测分析

发布时间：2018-06-23 11:24

本文选题：复杂高层建筑 + 施工过程分析　；参考：《北京交通大学》2013年硕士论文

【摘要】：随着国民经济和建筑技术的飞速发展,形态新异复杂的高层超高层结构和高耸结构不断出现,这类大型复杂的高层结构建筑通常体量庞大而且结构体系复杂,传统的施工方法和计算方法已不能满足其施工过程中力学性态预测与施工过程安全控制的需要。因此,在大型复杂的高层结构中引入施工过程分析,计算结构在施工过程中的力学行为,具有重要的理论意义和实际价值。本文详细介绍了复杂高层结构施工力学的分析理论,结合实际工程(超高层钢框架-混凝土核心筒混合结构),在探讨与分析结构的特点、施工难点以及施工方案的基础上,运用ANSYS软件对整体结构进行了有限元建模。考虑施工顺序、施工荷载组合等因素,对结构进行施工全过程模拟分析。以有限元软件ANSYS为计算平台,提出模拟计算大型复杂高层结构施工过程的步骤及策略,得到结构施工过程中的内力和变形随施工步的变化,并对结构施工的预调值进行分析,表明有限元模拟分析的合理性及可操作性。具体介绍了核心筒的施工方法—液压顶升爬模技术,施工过程中对爬模桁架进行监测和有限元分析,对于确保核心筒正常和安全的施工,具有重要的实际意义。
[Abstract]:With the rapid development of national economy and building technology, new and complex high-rise structures and towering structures are emerging. Such large and complex high-rise buildings are usually large in volume and complex in structure system. The traditional construction method and calculation method can not meet the requirement of mechanical behavior prediction and safety control in construction process. Therefore, it is of great theoretical significance and practical value to introduce construction process analysis into large and complex high-rise structures and to calculate the mechanical behavior of the structure in the construction process. This paper introduces in detail the analysis theory of construction mechanics of complex high-rise structures, combining with practical engineering (super-tall steel frame-concrete core-tube hybrid structure), on the basis of discussing and analyzing the characteristics of the structure, the construction difficulties and the construction scheme. The finite element modeling of the whole structure is carried out with ANSYS software. Considering the construction sequence, construction load combination and other factors, the whole construction process of the structure is simulated and analyzed. Based on the finite element software ANSYS, the steps and strategies for simulating and calculating the construction process of large and complex high-rise structures are put forward, and the variation of internal force and deformation with the construction step during the construction process is obtained, and the pre-adjustment values of the structure construction are analyzed. It shows the rationality and maneuverability of finite element simulation analysis. This paper introduces concretely the construction method of core tube-hydraulic jacking climbing formwork technology, monitoring and finite element analysis of climbing formwork truss during construction, which is of great practical significance for ensuring the normal and safe construction of core tube.
【学位授予单位】：北京交通大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU974

【参考文献】