共查询到17条相似文献，搜索用时 218 毫秒
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利用有限元软件ABAQUS 对纯钢框架试件、冷弯薄壁型钢组合墙体试件、钢框架-冷弯薄壁型钢组合墙体试件、覆双面OSB 板的钢框架-冷弯薄壁型钢组合墙体试件进行水平低周往复荷载作用下研究,分析了试件的滞回曲线、骨架曲线、抗侧刚度、延性和耗能等。结果表明,钢框架与冷弯薄壁型钢组合墙体有明显的组合效应;冷弯薄壁型钢组合墙体能明显增强钢框架结构的承载力、刚度、延性和耗能能力;覆双面OSB 板钢框架-冷弯薄壁型钢组合墙体结构抗震性能较不覆板的钢框架-冷弯薄壁型钢组合墙体结构抗震性能好。 相似文献
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冷弯型钢是一种经济的截面轻型薄壁钢材.它广泛应用于国民经济的各个领域。通过使用有限元分析的手段,利用软件Abqus对不同截面的冷弯薄壁型钢进行了力学性能分析。验证了截面形状对构件的刚度有较大影响。对于薄壁型钢而言,截面的局部受力分析是研究冷弯型钢工程性能的关键。 相似文献
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进行3根冷弯薄壁方钢管混凝土简支梁在循环荷载作用下的试验,在确定冷弯薄壁方钢管混凝土简支梁本构关系模型的基础上,采用有限元软件ANsYs对冷弯薄壁方钢管混凝土简支梁的滞回性能进行非线性分析。研究其在不同参数下的滞回性能、延性等重要抗震性能指标。得到的主要结论如下：（1）冷弯薄壁方钢管混凝土简支梁的滞回曲线呈梭形,较为饱满,没有出现明显的捏缩现象,表明构件具有较好的延性和耗能能力。（2）建立的非线性有限元模型能够预测冷弯薄壁钢管混凝土梁的弹塑性行为和抗震性能,计算结果与实测结果基本吻合,为进行冷弯薄壁钢管混凝土梁的数值模拟提供参考。 相似文献
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介绍了冷弯薄壁型钢结构的一系列优点,对外冷弯薄壁型钢轴心受压构件稳定承载力的计算原理进行了简单的总结,并详细说明了我国规范关于冷弯薄壁型钢轴心受压构件稳定承载力的计算方法. 相似文献
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现代物流要求物资的供应分发及时、迅速、准确,同时也促使仓储技术得到了迅速的发展。为了满足不同的要求,形成了一系列的冷弯薄壁钢货架结构形式。文章通过非线性有限元分析了新型钢货架短柱性能,为设计应用提供依据。 相似文献
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随着我国经济的迅速发展,在生产和生活中人们将更多地应用外形美观、经济实用、安装方便的冷弯型钢产品.正是用户对冷弯型钢产品的品种、规格、质量等方面的不断渴求,促使冷弯成型工艺技术的迅猛发展.本文介绍了冷弯型钢的概念和产品的特点以及冷弯成型的加工工艺,并指出了冷弯成型工艺出现的问题. 相似文献
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冷弯薄壁型钢梁的滞回性能非线性有限元分析 总被引：1，自引：0，他引：1
在确定冷弯薄壁型简支钢梁应力-应变模型的基础上,采用有限元软件ANSYS对冷弯薄壁型简支钢梁荷载-位移关系进行非线性有限元计算分析。对冷弯薄壁型简支钢梁荷载-位移关系骨架线、弯矩-曲率关系骨架线进行比较分析,主要比较了跨高比、宽厚比对其的影响。 相似文献
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ZHUGE Yan 《天津大学学报(英文版)》2008,14(1)
To retrofit and strengthen existing unreinforced masonry (URM) structures to resist the potential earthquake damages has become an important issue in Australia.In order to secure the performance of URM under seismic loading in the future,a research project was carried out aimed at developing a simple and high strength seismic retrofitting technique for masonry structures.A series of experimental testing on URM walls retrofitted with an innovative technique by cable system have been conducted.The results indicated that both the strength and ductility of the tested specimens were significantly enhanced with the technique.An analytical model which is based on Distinct Element Method (DEM) has also been developed to simulate the behaviour of URM walls before and after retrofitting.The model is then further developed by applying a seismic wave to the wall to simulate the wall behavior under earthquake loads before and after retrofitting. 相似文献
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ZHUGE Yan 《天津大学学报(英文版)》2008,(Z1)
To retrofit and strengthen existing unreinforced masonry (URM) structures to resist the potential earthquake damages has become an important issue in Australia. In order to secure the performance of URM under seismic loading in the future, a research project was carried out aimed at developing a simple and high strength seismic retrofitting technique for masonry structures. A series of experimental testing on URM walls retrofitted with an innovative technique by cable system have been conducted. The results indicated that both the strength and ductility of the tested speci-mens were significantly enhanced with the technique. An analytical model which is based on Dis-tinct Element Method (DEM) has also been developed to simulate the behaviour of URM walls be-fore and after retrofitting. The model is then further developed by applying a seismic wave to the wall to simulate the wall behavior under earthquake loads before and after retrofitting. 相似文献
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一钢框架结构分别以普通砌块和泡沫混凝土为填充墙材料,据此建立有限元模型来研究其对结构抗震性能的影响。根据数据分析,砌块填充墙和泡沫混凝土填充墙对结构的动力特性有不同程度的影响,结构的位移反应也有不同的表现。 相似文献
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Terrorist attacks using improvised explosive devices (lED) can result in unreinforced masonry (URM) wall collapse.Protecting URM wall from lED attack is very complicated.An effective solution to mitigate blast effects on URM wall is to retrofit URM walls with metallic foam sheets to absorb blast energy.However,mitigation of blast effects on metallic foam protected URM walls is currently in their infancy in the world.In this palaer,numerical models are used to simulate the performance of aluminum foam protected URM walls subjected to blast loads.A distinctive model,in which mortar and brick units of masonry are discritized individually,is used to model the performance of masonry and the contact between the masonry and steel face-sheet of aluminum foam is modelled using the interface element model.The aluminum foam is modelled by a nonlinear elastoplastic material model.The material models for masonry,aluminum foam and interface are then coded into a finite element program LS-DYNA3D to perform the numerical calculations of response and damage of aluminum foam protected URM walls under airblast loads.Discussion is made on the effectiveness of the aluminum foam protected system for URM wall against blast loads. 相似文献
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In this study, the suitability of current design methods for the 0.2% proof yield strength of the comer regions for high strength cold-formed steel at normal room temperature was investigated. The current standard predictions are generally accurate for outer comer specimen but conservative for inner comer specimen. Based on the experimental results, an analytical model to predict the comer strength of high strength cold-formed steel at normal room temperature was also proposed. The comparison indicated that the proposed model predicted well the comer strength of high strength cold-formed steel not only at normal room temperature but also at elevated temperatures. It is shown that the predictions obtained from the proposed model agree well with the test results. Generally the comer strength enhancement of high strength cold-formed steel decreases when the temperature increases. 相似文献