墙板装配式钢结构体系抗震性能有限元研究

发布时间：2018-06-21 02:59

本文选题：墙板装配式钢结构体系 + 有限元分析　；参考：《西安建筑科技大学》2014年硕士论文

【摘要】：装配式钢结构体系是近年来国内外研究较多的热门课题。相较于传统的混凝土、砌体结构，装配式钢结构体系具有巨大的优势，它施工速度快、现场湿作业少、便于实现工业化和标准化、质量易控制、可降低成本且绿色环保，这些特点使得它在未来建筑中具有巨大的发展潜力。但是，，当前国内外对于装配式钢结构体系的研究仍然有很大不足，主要体现在标准化程度还不够高、适用范围较小、资源浪费等，无法实现真正意义上的标准化、产业化以及绿色环保的要求。因此，本文在总结国内外研究的基础上，提出了一种新型墙板装配式钢结构体系，该体系由组合式受力墙板、非受力墙板以及一体化楼板组成，具有部件标准化生产、集成化程度高、现场无焊接操作、综合经济效益好等优点。它能最大程度地满足工业化生产的要求且绿色环保，为我国住宅产业实现“快、好、省”的目标提供借鉴。为了将墙板装配式钢结构体系推广应用，本文对其抗震性能进行研究，首先利用ABAQUS软件对其承重骨架的二维简化模型进行循环加载下的有限元分析，得到了其承载力、滞回性能、刚度、延性和耗能能力等。研究了不同柱壁厚（6mm、8mm、10mm）对于骨架受力性能的影响。研究表明，二维模型在循环加载下表现出良好的滞回性能和耗能能力，随着柱壁厚的增加，骨架的承载力提高且破坏模式更加合理。同时，为了研究墙板装配式钢结构体系在罕遇地震作用下塑性破坏机制，利用MIDAS/Gen软件对其6层三维结构进行静力弹塑性pushover分析，并与纯钢框架体系进行对比。分析表明，墙板装配式钢结构体系在罕遇地震作用下层间位移等均满足规范要求，塑性铰出现的位置合理，符合大震下“强柱弱梁”的抗震设计要求。在用钢量相同的情况下，它比纯钢框架抗侧能力更强，变形更加合理且塑性铰开展得更加均匀且充分。最后，以华清集团办公楼为试点工程，介绍了墙板装配式钢结构体系在实际工程中的应用，从结构布置、结构计算和施工图绘制方面阐述了墙板装配式钢结构体系应用于实际的可操作性。
[Abstract]:Assembly steel structure system is a hot topic at home and abroad in recent years. Compared with the traditional concrete, masonry structure and fabricated steel structure system, it has great advantages, such as fast construction speed, less wet work on site, easy industrialization and standardization, easy quality control, low cost and green environmental protection. These characteristics make it have great development potential in the future architecture. However, the current domestic and foreign research on the assembled steel structure system is still very insufficient, mainly reflected in the degree of standardization is not high enough, the scope of application is small, the waste of resources, etc., which can not achieve the true sense of standardization. Industrialization and green environmental protection requirements. Therefore, on the basis of summing up the domestic and foreign research, this paper puts forward a new type of steel structure system of wall panel assembly, which is composed of combined force wall board, unloaded wall board and integrated floor slab, and has standardized production of components. High degree of integration, no welding operation on site, good comprehensive economic benefits and so on. It can meet the requirements of industrialization and environmental protection to the greatest extent, and provide reference for the goal of "fast, good and provincial" in our country's housing industry. In order to popularize and apply the steel structure system with wall panel assembly, the aseismic performance of the steel structure system is studied in this paper. Firstly, the finite element analysis of the simplified two-dimensional model of the load-bearing skeleton is carried out by using Abaqus software, and the bearing capacity is obtained. Hysteretic performance, stiffness, ductility and energy dissipation. The influence of different thickness of column (6 mm to 8 mm / 10 mm) on the mechanical properties of the skeleton was studied. The results show that the two-dimensional model exhibits good hysteretic performance and energy dissipation ability under cyclic loading. With the increase of column wall thickness, the bearing capacity of the skeleton increases and the failure mode is more reasonable. At the same time, in order to study the plastic failure mechanism of wall panel fabricated steel structure system under rare earthquake, the static elastoplastic pushover analysis of its six-story three-dimensional structure was carried out by MIDAS-Gen software, and the results were compared with that of pure steel frame system. The analysis shows that the displacements between the lower layers of wall plate fabricated steel structure system under rare earthquake can meet the requirements of code, and the location of plastic hinge is reasonable, which meets the seismic design requirements of "strong column and weak beam" under strong earthquake. With the same amount of steel, it has stronger lateral resistance, more reasonable deformation and more uniform and sufficient plastic hinge than the pure steel frame. Finally, taking the office building of Huaqing Group as the pilot project, the paper introduces the application of the wall panel assembly steel structure system in the actual engineering, and from the structure layout, In terms of structure calculation and construction drawing, the practical maneuverability of wall panel assembly steel structure system is expounded.
【学位授予单位】：西安建筑科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU391;TU352.11

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