装配式冷弯薄壁轻钢活动板房整体抗侧性能原位试验研究

发布时间：2018-03-19 19:54

本文选题：冷弯薄壁　切入点：C　出处：《昆明理工大学》2017年硕士论文　论文类型：学位论文

【摘要】：云南省是一个地震多发的省份,装配式冷弯薄壁轻钢结构活动板房是目前被广泛应用于灾后重建临时性住房的一种建筑结构。根据《云南省住房和城乡建设厅关于印发云南省2010年度工程建设地方标准编制计划的通知》(云建标[2010)300号)精神,为提高自然灾害发生后抢险救灾期间过渡安置活动板房以及一般临时性用房的质量安全要求,进一步规范云南省装配式轻钢结构活动板房的设计、制作、运输、施工安装、竣工验收等标准,课题组会同云南建投建筑机械有限公司及相关单位参编编制装配式轻钢结构活动板房技术规程。因我国轻型钢结构住宅体系的研究和应用起步较晚,规范虽然给出了冷弯型钢的设计方法,但对于此类结构体系的设计并无具体规定。规范对于本文研究的装配式轻钢活动板房的抗侧部分缺乏规定。这些都给装配式轻钢结构活动板房技术规程的编制带来了阻力。故课题组进行了一系列的试验。本文结合前期的研究成果,针对一栋装配式轻钢结构活动板房进行了环境激励法动力特征测试,获得了建筑的周期,阻尼比和频率;对这栋装配式冷弯薄壁轻钢结构活动板房进行了原位试验,获得了不同加载等级下的结构动力特性,对地方标准中地震影响系数α的选取提出建议;在对X向的力与位移曲线分析后得到整栋房屋的抗侧刚度,推导出X向墙体的抗侧刚度计算公式。分析Y向整栋房屋的力与位移曲线并与一榀框架下的力与位移曲线进行对比,研究整栋房屋Y向的抗侧力性能与一榀框架之间的联系;并给出了整栋房屋Y向抗侧刚度的计算公式;并在此基础上提出一些具有一定工程参考价值的建议。分析节点域的应变得出Y向加载位移在0-190mm过程中柱子节点域冷弯薄壁C型钢仍处于弹性范围内;对两种不同加载方式下的弯矩-转角曲线,对比分析后得出梁祝为半刚性连接。
[Abstract]:Yunnan Province is an earthquake-prone province. The assembled cold-formed thin-walled light steel structure movable plate house is widely used in the reconstruction of temporary housing after disaster. According to the "Yunnan Provincial Housing and Urban-Rural Construction Bureau" about the issue of Yunnan Province 2010 project construction site. The notice of Fang's Standard Plan > (Yunjian Standard [2010] 300) spirit, In order to improve the quality and safety requirements of temporary housing and general temporary housing during the period of emergency rescue and disaster relief after natural disasters, the design, manufacture, transportation, construction and installation of the assembled light steel structure movable plate houses in Yunnan Province are further standardized. For completion acceptance and other standards, the research group, together with Yunnan Jiantou Construction Machinery Co., Ltd. and related units, have worked out the technical specifications for assembled light steel structure movable plate houses. Because of the late start of research and application of light steel structure housing system in China, Although the code gives the design method of cold-formed section steel, However, there is no specific provision for the design of this kind of structure system. The specification is lack of stipulation for the anti-side part of the assembled light steel movable plate house studied in this paper. All these provide the technical specification for the assembly light steel structure movable plate building. Therefore, the research group carried out a series of experiments. In this paper, the dynamic characteristics of an assembled light steel structure movable plate house are tested by the environmental excitation method, and the period, damping ratio and frequency of the building are obtained, and the in-situ test of the assembled cold-formed thin-walled light steel structure movable plate house is carried out. The dynamic characteristics of the structure under different loading levels are obtained, and suggestions are made for the selection of seismic influence coefficient 伪 in the local standard, and the lateral stiffness of the whole building is obtained after the analysis of the force and displacement curves in the X direction. The calculation formula of the lateral stiffness of the X direction wall is derived, the force and displacement curves of the whole building with Y direction are analyzed and compared with those of a frame, and the relation between the lateral force resistance of the whole building in Y direction and a frame is studied. The formula for calculating the lateral stiffness of the whole building is given. On the basis of the analysis of the strain in the node domain, it is concluded that the cold-formed thin-walled C section steel in the column joint domain is still in the elastic range in the process of 0-190mm loading displacement. The bending moment-angle curve under two different loading modes is compared and analyzed, and it is concluded that the beam is a semi-rigid connection.
【学位授予单位】：昆明理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU392.5

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