拱形波纹钢屋盖动力特性测试及分析   总被引：2，自引：0，他引：2  

王小平蒋沧如  胡春宇李桂青 《地震工程与工程振动》2005,25(5):112-116

拱形波纹钢屋盖是一种新颖的金属拱形薄壳结构，在我国已经得到了广泛的应用。由于结构的复杂性，目前有关的理论研究尚不够深入，动力研究还很少有人涉及。以18m和30m两种跨度的W666型拱形波纹钢屋盖为研究对象，测试了拱在竖向平面内振动时的频率、振型及阻尼。在所提简化计算模型的基础上，采用有限元方法计算了结构的动力特性，其结果与试验数据符合较好。测试和分析结果为该结构的动力反应研究提供了方便。  相似文献   

油气储运系统钢结构设备地震火灾效应研究   总被引：3，自引：0，他引：3  

李天祺  赵振东 《地震工程与工程振动》2005,25(6):118-121

预防和减轻油气储运系统地震火灾危险性是防震减灾中的重要课题。本文论述了油气储运系统的地震火灾特征及防火要求，对钢结构的防火涂料在遭到破坏和平时情况下的抗火性能进行了对比分析，并应用有限元法对油气储运系统中典型钢结构设备在地震火灾荷载作用下的抗火性能进行了数值模拟。研究结果表明，防火涂料遭到强地震荷载破坏后，钢结构的抗火性能大大降低。  相似文献   

钢骨混凝土结构抗震研究综述     

吴平川  张令心  杨克勇 《世界地震工程》2007,23(4):13-18

介绍了钢骨混凝土结构的特点以及抗震研究发展现状，指出了这种结构在抗震研究中存在的主要问题和今后需要进一步研究的方向。  相似文献   

基础隔震层钢螺旋弹簧软碰撞限位实验研究     

韩淼  李仙华  杜红凯 《世界地震工程》2007,23(4):39-43

设计制作了基础隔震软碰撞限位实验模型与3种类型的钢螺旋弹簧限位器，给出了实测的限位器力学特性参数。进行9种工况的振动台模型实验，分析实验数据得出了软碰撞限位器参数对结构反应的影响规律，优选出了适用于本隔震实验模型的软碰撞限位工况。  相似文献   

Pure aluminium shear panels as dissipative devices in moment‐resisting steel frames     

G. De Matteis  F. M. Mazzolani  S. Panico 《地震工程与结构动力学》2007,36(7):841-859

The use of energy dissipation systems for the seismic control of steel structures represents a valid alternative to conventional seismic design methods. The seismic devices currently employed are mostly based on the metallic yielding technology due to the large feasibility and efficiency they can provide. Within this context, in the current paper an innovative solution based on the adoption of low‐yield‐strength pure aluminium shear panels (SPs) for seismic protection of steel moment‐resisting frames is proposed and investigated. In order to prove the effectiveness of the system, a wide numerical study based on both static and dynamic non‐linear analyses has been carried out, considering a number of different frame‐to‐shear panel combinations, aiming at assessing the effect of the main influential parameters on the seismic response of the structure. The obtained results show that the contribution provided by aluminium SPs is rather significant, allowing a remarkable improvement of the seismic performance of the structure in terms of stiffness, strength and ductility, with the possibility to strongly limit the damage occurring in the members of moment‐resisting frames. In particular, it is clearly emphasized that the stiffening effect provided by SPs allows a more rational design procedure to be adopted, since the serviceability limit state check does not lead to unavoidable and uneconomical increase of the size of main structural members. Copyright © 2007 John Wiley & Sons, Ltd.  相似文献   

锚定式方钢管混凝土柱与钢梁节点抗震性能试验研究     

王先铁  郝际平  王丰平  潘阳  任青青  李娜 《地震工程与工程振动》2007,27(5):95-102

通过低周反复加载试验对6个锚定式方钢管混凝土柱-H形钢梁节点进行了试验研究,研究了不同轴压比情况下节点的破坏模式、延性、耗能性能、强度及刚度退化等。试验结果表明,破坏之前节点具有良好的滞回性能、延性及耗能能力,满足现行抗震规范的要求。锚定式方钢管混凝土梁柱节点可以用于拉力较小的节点。文中提出了有关的设计建议。  相似文献   

基于数字摄影的钢结构变形监测系统研究   总被引：3，自引：0，他引：3  

李妍  于承新 《测绘信息与工程》2002,27(2):14-15

讨论了基于数字摄影的钢结构变形监测系统研究所解决的主要问题，提出了相应的解决方法，并论述了整个系统的流程。  相似文献   

圆钢管混凝土压弯构件荷载一位移滞回性能分析   总被引：6，自引：1，他引：6  

韩林海  陶忠  阎维波 《地震工程与工程振动》2001,21(1):64-73

在空钢管中填充混凝土可以避免或延缓钢管过早地发生局部屈曲，并有效地提高构件的延性，从而增强构件的抗震性能，本文在对圆钢管混凝土构件弯矩－曲率关系分析的基础上，分析了圆钢管混凝土压弯构件P－△滞回关系曲线，理论计算结果得到国内外大量结果的验证，基于理论分析模型，分析了各参，如构件轴压比，长细比，截面含钢率和材料强度等因素对圆钢管混凝土压变变构件P－△滞回关系曲线的影响，最后，确定了圆钢管混凝土压弯构件P－△恢复力学模型和延性系数的简化计算方法。  相似文献   

关于吉林地区挖孔桩设计问题的探讨     

李向群  袁铁铮 《吉林大学学报(地球科学版)》2001,31(4):372-375

探讨了在吉林地区高层建筑中有关桩基规范执行及设计施工过程中常见的问题。通过对不同直径的桩端进入持力层深度的对比 ,明确 2d与 4d的对比要求 ,即持力层厚度的保证比进入持力层深度更重要。针对通长配筋“一通到底”的设计给施工带来的不便及浪费提出了新的建议。通过实践给出“α”角的建议值 ,既能减小扩大桩头斜面上受到卸荷后侧土压力 ,又可减少施工时的坍方。最后对降水及护壁提出了结合实际地质情况的 4种方法。  相似文献   

The role of industrial archaeology in conservation: The Reşiţa area of the Romanian Carpathians     

Nicolae Hillinger  Martin Olaru  David Turnock 《GeoJournal》2001,55(2-4):607-630

Industrial archaeology has developed as an important aspect of conservation during the second half of the twentieth century in the Western world and there have been great opportunities in transition countries since 1989 on account of economic restructuring and the importance given to 'niche' tourism. While the core interest lies with machines and industrial buildings, attention is also given to transport systems and the social context, with respect to relations between owners, managers and workers. Moreover, the desirability of maintaining old industrial installations within their traditional landscape settings enables industrial archaeology to make a contribution to sustainable development. This paper considers the prospects for Romania, with particular reference to the Reşiţa area of the Banat Carpathians. The mineral resources of this region gave rise to a metallurgical industry which was established under Habsburg administration in the eighteenth century and continues today. In addition to the principal factories in Anina and Reşiţa, the mining installations, transport systems and power stations contribute to a diverse industrial region in a distinctive physical and cultural setting. The development of the complex is summarised and the opportunities for conservation are evaluated. The tourist infrastructure of the area is also examined with regard to the range of accommodation available. This revised version was published online in July 2006 with corrections to the Cover Date.  相似文献