共查询到18条相似文献，搜索用时 156 毫秒
1.
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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“强柱弱梁”屈服机制的实现影响到框架结构的抗震性能,考虑楼板和柱截面尺寸影响因素,对框架结构进行ANSYS分析。数据显示,楼板和柱截面尺寸两方面对“强柱弱梁”机制的实现有积极作用,在今后的实际施工中应严格遵守抗震规范的规定,以其在结构中能较好实现“强柱弱梁”屈服机制。 相似文献
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木结构房屋抗震性能的试验研究 总被引：1，自引：0，他引：1
木结构房屋在我国某些地区仍有着广泛的应用,但由于材料的短缺目前我国对于木结构所做的研究不多。本试验通过拟静力试验的方法,对两榀无填充墙和有填充墙的木框架分别进行了在低周期反复荷载作用下受力性能的研究,观测了框架的整个破坏过程,分析了木框架的强度、变形和抗震性能。试验及分析表明,木框架本身具有很好的韧性,能够产生较大的位移而不破坏,填充墙在框架中相当于两个斜支撑,充分利用墙体的抗侧刚度能够显著增大框架的抗震能力。木结构房屋具有较好的抗震性能,能满足地震区的设计要求。 相似文献
4.
针对在一般填充墙框架的抗震设计中忽略填充墙的抗侧刚度对实际结构的影响进行了探讨，定性推导出了一般规律，并且同时考虑了填充墙的影响，得出了比较客观的结论． 相似文献
5.
偏心支撑钢框架是一种新型抗震结构体系，耗能梁段长度是影响其性能的重要参数，本文通过对一偏心支撑钢框架结构进行时程分析，进一步验证其在大震作用下良好的抗震性能。 相似文献
6.
异形柱结构体系抗震性能初探 总被引：1，自引：0，他引：1
吸取震害教训,力求抗震安全。分析了异形柱框架结构体系,CL结构体系（异性柱和复合墙板）的抗震性能,发现二者的抗震性能均较差,不适用于设防烈度为8度和小高层房屋。 相似文献
7.
通过对低层纯钢框架结构住宅的抗震性能分析,运用结构分析软件,结合实例证明了在8度(0.2g)地震区建造低层纯钢框架结构住宅的可行性。 相似文献
8.
框架结构填充墙裂缝形成原因及防治 总被引：1，自引：0，他引：1
丁立娟 《赤峰学院学报(自然科学版)》2005,21(4):80-81
框架结构填充墙裂缝产生原因包括材料、设计、施工、环境等因素，而裂缝的防治也应从这几方面着手,掌握好材料的性能，多方考虑框架结构的设计因素，精细进行施工，注意环境．尽量将裂缝出现降低至最小限度. 相似文献
9.
游猛 《湖南科技学院学报》2007,28(4):199-200
分析了钢筋混凝土框架砌体填充墙设置钢筋混凝土构造柱与多层砌体房屋中钢筋混凝土构造柱在作用、要求和构造做法方面的区别;分析了现阶段砌体填充墙中构造柱施工方法中存在的主要问题及原因;给出满足《建筑抗震设计规范》要求的合理施工方法。实践证明,这种做法既能满足规范要求,又具有易操作、质量易控制的优点。 相似文献
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11.
通过对填充墙钢框架和同尺寸纯钢框架结构的数值模拟,从两种不同形式的框架结构在单调荷载作用下的荷载——位移曲线、低周反复荷载作用下的滞回曲线、骨架曲线及刚度退化曲线,分析得知填充墙钢框架体系是一种理想的抗侧力体系,其优势表现在该结构的耗能能力、极限承载能力、延性、变形恢复能力及抗侧刚度均优于纯钢框架。 相似文献
12.
张铮江忠画陈笃海 《福建工程学院学报》2020,(3):205-210
与传统冷弯薄壁型钢墙体相比,冷弯薄壁型钢灌浆墙体具有优越的整体刚度和抗震性能。 通过综述国内外具代表性试验与有限元分析结果,分别给出墙架柱、支撑、墙面板、抗拔件、砂浆、高宽比、加载方式、开洞情况、竖向荷载作用等影响因素对墙体抗震性能的规律,提出该类墙体在抗震性能方面的研究方向。 相似文献
13.
张志俊 《黄冈职业技术学院学报》2012,14(5):92-94
砼框架结构抗震设计中浅基础的设计是众值烈度(多遇烈度)下的弹性基础设计,多遇地震作用均应参与组合,柱根设计内力为众值烈度(多烈度)下处于弹性状态时,最不利组合内力经内力调整设计的延性框架柱根内力,浅基础的设计按弹性基础设计时不需要考虑基础的延性要求,设计计算应遵循地基基础抗震设计原则,满足地基基础抗震设计要求。 相似文献
14.
论砼框架结构抗震设计 总被引：1，自引：1，他引：0
张志俊 《黄冈职业技术学院学报》2011,13(1):99-102
在砼框架结构抗震设计中,应充分考虑地震的破坏作用,合理设定抗震目标,满足设计的基本要求,采用科学的设计方法,建立有效的抗震机制。 相似文献
15.
The Australian love of "heritage" buildings (most of them are unreinforced masonry (URM)) means that greater attention is required to secure their performance under seismic or impact loading in the future. A research project has been carried out to develop a new, economic and high strength retrofitting technique for masonry structures. A series of experimental testing on URM walls retrofitted with an innovative technique by cable system have been conducted. In this paper, an analytical model which is based on distinct element method (DEM) is developed to simulate the behaviour of retrofitted walls. In DEM, a solid is represented as an assembly of discrete blocks. Joints are modelled as interface between distinct bodies. It is a dynamic process and specially designed to model the behaviour of discontinuities. In order to assist the practising engineers to design this new retrofitted wall system, a simple mechanical model was also developed to predict the strength of the retrofitted walls. The results obtained from this simple mechanical model are compared with those from both experiments and distinct element model. 相似文献
16.
Retrofitting of RC Slabs Against Explosive Loads 总被引：1，自引：0，他引：1
OEHLERS Deric John 《天津大学学报(英文版)》2006,12(Z1)
With the increase of terrorist bomb attacks on buildings, there is a need to develop advanced retrofitting techniques to strengthen structures against blast loads. Currently, several guidelines including an Australian version for retrofitting reinforced concrete (RC) structures are available for the design of retrofitting systems against seismic and monotonic loads using steel or fibre reinforced polymer (FRP) plates that can be either adhesively bonded to the surface or near surface mounted to the concrete cover. However, none of these guidelines provide advice suitable for retrofitting structures subjected to blast loads. In this paper, numerical models are used to simulate the performance of retrofitted RC slabs subjected to blast loads. Airblast pressure distributions on the surface of the slabs estimated in a previous study are used as input in the analysis. A material damage model developed previously for concrete and an elastoplastic model for steel bars are employed in this research for modelling reinforced concrete behaviour due to explosive loads. The material models and blast loading are coded into a finite element computer program LS-DYNA3D to do the analysis. With the numerical model, parametric studies are conducted to investigate RC slabs retrofitted by either externally bonded or near-surface mounted plates or GFRP sheets subjected to blast loads. Discussion is made on the effectiveness of the retrofitting system for RC slabs against blast loads. 相似文献
17.
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
18.
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