拼装式轻钢结构活动房墙体竖向荷载受力计算方法
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摘要
为了掌握拼装式轻钢结构活动房的受力性能,解决活动房安全性问题,提出一种拼装式轻钢结构活动房墙体竖向荷载受力计算方法。分析了拼装式轻钢结构活动房墙体中轻钢龙骨、连接件的弹性模量、屈服点等力学性能;在此基础上建立有限元模型。给出计算假设,分析了美国计算标准。在拼装式轻钢结构活动房墙体处于弯曲屈曲破坏模式的情况下,依据欧拉方程获取额定屈曲应力。在拼装式轻钢结构活动房墙体处于弯扭屈曲破坏模式的情况下,依据美国计算标准计算额定屈服应力。拼装式轻钢结构活动房墙体处于受压强度破坏模式下,依次分析轻钢龙骨和轻钢墙板先出现强度破坏时墙体竖向荷载受力计算结果,得出不同破坏模式下墙体竖向荷载受力计算理论值。将轻型薄壁中空方管、V型连接件以及蒙皮组成拼装式轻钢结构活动房墙体作为试件,利用集中加载模拟竖向荷载,得到受力结果的实验值。计算不同试件轻钢结构活动房墙体竖向荷载受力计算结果,将实验值和理论值相比。结果表明:所提方法得到的理论值和实验值相比略低;但整体看来和实验值相差不大,符合实际应用。可见所提方法计算结果可靠。
In order to master the mechanical performance of assembled light steel structure movable room and solve the safety problem of movable room,a calculation method of vertical load on wall of assembled light steel structure movable room was proposed. The mechanical properties of light-weight steel keel,elastic modulus and yield point of joints in the wall of movable building with assembled light-weight steel structure were analyzed. On this basis,the finite element model was established. The calculation assumptions were given and the American calculation standard was analyzed. The rated buckling stress was obtained according to Euler equation when the wall of assembled light steel structure was in the mode of bending buckling failure. When the wall of assembled light steel structure was in the mode of flexural-torsional buckling failure,the rated yield stress was calculated according to the American calculation standard. The wall of movable building with assembled light steel structure was in the mode of compressive strength failure. The calculation results of vertical load of the wall when the strength failure of light steel keel and light steel wallboard first occurs were analyzed in turn,and the theoretical values of vertical load of the wall under different failure modes were obtained. The wall of assembled light steel structure movable room was composed of light-weight thin-walled hollow square tube,V-type connector and skin. The vertical load was simulated by centralized loading,and the experimental results were obtained. The calculation results of vertical loads on walls of movable light steel structures with different specimens were calculated,and the experimental values were compared with the theoretical values. The results show that the theoretical value is slightly lower than the experimental value,but the overall difference between the theoretical value and the experimental value is small,which is in line with the practical application. Verification shows that the proposed method is reliable.
In order to master the mechanical performance of assembled light steel structure movable room and solve the safety problem of movable room,a calculation method of vertical load on wall of assembled light steel structure movable room was proposed. The mechanical properties of light-weight steel keel,elastic modulus and yield point of joints in the wall of movable building with assembled light-weight steel structure were analyzed. On this basis,the finite element model was established. The calculation assumptions were given and the American calculation standard was analyzed. The rated buckling stress was obtained according to Euler equation when the wall of assembled light steel structure was in the mode of bending buckling failure. When the wall of assembled light steel structure was in the mode of flexural-torsional buckling failure,the rated yield stress was calculated according to the American calculation standard. The wall of movable building with assembled light steel structure was in the mode of compressive strength failure. The calculation results of vertical load of the wall when the strength failure of light steel keel and light steel wallboard first occurs were analyzed in turn,and the theoretical values of vertical load of the wall under different failure modes were obtained. The wall of assembled light steel structure movable room was composed of light-weight thin-walled hollow square tube,V-type connector and skin. The vertical load was simulated by centralized loading,and the experimental results were obtained. The calculation results of vertical loads on walls of movable light steel structures with different specimens were calculated,and the experimental values were compared with the theoretical values. The results show that the theoretical value is slightly lower than the experimental value,but the overall difference between the theoretical value and the experimental value is small,which is in line with the practical application. Verification shows that the proposed method is reliable.
引文
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14蓝波,吴昊,王一泽,等.基于制造物联的生产数据采集与应用技术研究[J].电子设计工程,2017,25(17):21-25Lan Bo,Wu Hao,Wang Yize,et al.Manufacturing data collection and application technology based on Internet of manufacturing-related things[J].Electronic Design Engineering,2017,25(17):21-25
15 Campione G,Cavaleri L,Macaluso G,et al.Evaluation of infilled frames:an updated in-plane-stiffness macro-model considering the effects of vertical loads[J].Bulletin of Earthquake Engineering,2015,13(8):2265-2281
2薛伟伟.生态复合墙结构在土-桩-结构相互作用下竖向荷载受力性能分析[J].新型建筑材料,2016,43(4):62-68Xue Weiwei.Analysis on the bearing capacity of soil-pile-eco-composite walls interaction system under vertical load[J].New Building Materials,2016,43(4):62-68
3苏何先,潘文,柏文峰,等.新型土坯墙体房屋抗震性能试验研究[J].土木建筑与环境工程,2015,37(6):54-61Su Hexian,Pan Wen,Bai Wenfeng,et al.Seismic behavior of new adobe walls structure[J].Journal of Chongqing Jianzhu University,2015,37(6):54-61
4薛光桥,肖明清,郭志明.变刚度地连墙的计算方法及受力变形特性研究[J].铁道工程学报,2015,32(10):109-114Xue Guangqiao,Xiao Mingqing,Guo Zhiming.Research on the computational method and bearing and deforming behaviour of variable stiffness diaphragm wall[J].Journal of Railway Engineering Society,2015,32(10):109-114
5 Humbert J,Boudaud C,Baroth J,et al.Joints and wood shear walls modelling I:constitutive law,experimental tests and FE model under quasi-static loading[J].Engineering Structures,2014,65(3):52-61
6崔成臣,黄强,李东彬,等.异形截面轻钢EPS混凝土剪力墙抗震性能试验研究[J].建筑科学,2016,32(3):40-45Cui Chengchen,Huang Qiang,Li Dongbin,et al.Experimental study on seismic behavior of light gauge steel reinforced EPS concrete shear walls with irregular section[J].Building Science,2016,32(3):40-45
7何茜.钢筋混凝土剪力墙在荷载力作用下的抗剪承载力分析[J].科技通报,2017,33(4):101-104He Qian.Analysis of shear tolerance capacity of reinforced concrete shear wall under load force[J].Bulletin of Science and Technology,2017,33(4):101-104
8张海霞,李帼昌,杨萍.新型连接下轻钢龙骨内墙平面外受力性能的有限元分析[J].钢结构,2016,31(2):53-58Zhang Haixia,Li Guochang,Yang Ping.Fem analysis on out-ofplane mechanical performance of light steel keel interior wall with new type connection[J].Steel Construction,2016,31(2):53-58
9夏昌.巨-子组合结构减震控制研究[J].科学技术与工程,2014,14(22):270-274Xia Chang.Research on vibration-absorption control of mega-sub composite structural system[J].Science Technology and Engineering,2014,14(22):270-274
10郝翔,刘英达.疲劳载荷下钢管混凝土强度预测模型仿真分析[J].计算机仿真,2017,34(3):361-364Hao Xiang,Liu Yingda.Strength of concrete filled steel tube under fatigue load prediction model simulation analysis[J].Computer Simulation,2017,34(3):361-364
11耿悦,王玉银,丁井臻,等.外挂式轻钢龙骨墙体-钢框架连接受力性能研究[J].建筑结构学报,2016,37(6):141-150Geng Yue,Wang Yuyin,Ding Jingzhen,et al.Mechanical behavior of connections between out-hung light-gauge steel stud walls and steel frames[J].建筑结构学报,2016,37(6):141-150
12徐彪,朱健铭,蒋朝阳,等.通用型工业级数据采集和监控系统设计[J].计算机测量与控制,2014,22(10):3192-3195Xu Biao,Zhu Jianming,Jiang Zhaoyang,et al.Design of universal industrial data acquisition and supervisory system[J].Computer Measurement&Control,2014,22(10):3192-3195
13沈银龙,童乐为,周锋.火车站雨棚轻钢屋面抗风承载力试验研究[J].结构工程师,2015,31(2):168-174Shen Yinlong,Tong Lewei,Zhou Feng.Wind-resistant test of lightweight steel roof for a railway station canopy[J].Structural Engineers,2015,31(2):168-174
14蓝波,吴昊,王一泽,等.基于制造物联的生产数据采集与应用技术研究[J].电子设计工程,2017,25(17):21-25Lan Bo,Wu Hao,Wang Yize,et al.Manufacturing data collection and application technology based on Internet of manufacturing-related things[J].Electronic Design Engineering,2017,25(17):21-25
15 Campione G,Cavaleri L,Macaluso G,et al.Evaluation of infilled frames:an updated in-plane-stiffness macro-model considering the effects of vertical loads[J].Bulletin of Earthquake Engineering,2015,13(8):2265-2281