碳纤维布用于砖砌体抗震加固的试验研究   总被引：49，自引：1，他引：49  

赵彤  张晨军  谢剑  李浩菊 《地震工程与工程振动》2001,21(2):89-95

通过4片碳纤维布加固砖砌体在周期反复荷载作用下受力性能的试验，研究了粘贴碳纤维布来增强砖砌体抗震能力这种加固方法的有效性。本文研究了碳纤维布加固砖砌体的受力特性，分析了碳纤维布的用量以及贴布方式等因素对砖砌体抗震加固效果的影响。在此基础上，本文提出了碳纤维布加固砖砌体抗剪承载力的简化计算方法，可以满足实际工程设计的要求。  相似文献   

多层砖房震害因子的选择及其与震害程度的灰色关联序分析   总被引：3，自引：2，他引：3  

刘本玉  江见鲸  叶燎原  缪昇 《地震研究》2001,24(2):150-155

应用灰色系统理论，以云南省东川市地震破坏中多层砖房的震害为例，分析计算了多层砖房的震害因子与震害程度的关联度，总结了影响多层砖房震害的主要因素，并对其诸多因素进行了排序。  相似文献   

An enhanced homogenization approach for masonry structures with compressible joints. Application to hearth thermomechanical computations     

N. J. Mathieu  K. Sab  S. A. Zaïmi 《国际地质力学数值与分析法杂志》2012,36(9):1102-1124

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Numerical analysis of block stone displacements in ancient masonry structures: A new method to estimate historic ground motions     

Ronnie Kamai  Yossef H. Hatzor 《国际地质力学数值与分析法杂志》2008,32(11):1321-1340

An innovative approach is presented, in which the discontinuous deformation analysis (DDA) method is used to estimate historic ground motions by back analysis of unique structural failures in archaeological sites. Two archaeological sites in Israel are investigated using this new approach and results are presented in terms of displacement evolution of selected structural elements in the studied masonry structure. The response of the structure is studied up to the point of incipient failure, in a mechanism similar to the one observed in the field. Structural response is found to be very sensitive to dynamic parameters of the loading function such as amplitude and frequency. Prior to back analysis of case studies, two validations are presented. Both compare the performance of DDA with analytical solutions and present strong agreement between the two. Using comprehensive sensitivity analyses, the most likely peak ground acceleration (PGA) and frequency that must have driven the observed block displacements are found for the two case studies—the Nabatean city of Mamshit and the medieval fortress of Nimrod in southern and northern Israel, respectively. It is found that horizontal peak ground accelerations (HPGA) of 0.5g and 1g were required to generate the observed deformations in Mamshit and Nimrod, respectively. Although these might seem too high, considering structural and topographic amplifications it is concluded that the analyses suggest ground motions of 0.2g at a frequency of 1.5 Hz for Mamshit and up to 0.4g at a frequency of 1 Hz for Nimrod. These values provide constraints on the seismic risk associated with these regions as appears in the local building code using a completely independent approach. Copyright © 2007 John Wiley & Sons, Ltd.  相似文献   

Evaluation of the seismic response of masonry buildings based on energy functions     

D. Benedetti  P. Carydis  M. P. Limongelli 《地震工程与结构动力学》2001,30(7):1061-1081

This work is based on energies evaluated from the responses of 12 stone and brick masonry systems subjected to 58 shaking table tests. The evolution of input energy during a damaging base excitation is correlated to the change of the damage patterns of the considered buildings. The comparison among energies dissipated and absorbed by the buildings during the various shocks gives some hints on strengthening strategies. It is found that damage to spandrel beams produces a more significant energy absorption than other types of damage. Copyright © 2001 John Wiley & Sons, Ltd.  相似文献   

砖混结构墙体冲击承载性能的实验研究     

张宇  韦方强王青 《山地学报》2006,24(B10):253-257

以云南东川蒋家沟实际观测资料为基础，研究砖混结构建筑墙体在受到泥石流体中携带的大石块冲击力作用下的受力形式及破坏形态；在此基础上，进行了砖混建筑结构墙体模型试件的破坏性实验，现场观测试件在平面内和平面外两种冲击力作用方式下的破坏形态和历程，采集其动态位移、振幅及主振频率数据，经计算分析得出结构动态响应模式。  相似文献   

Experimental and analytical studies on earthquake resisting behaviour of confined concrete block masonry structures     

Norio Hori  Norio Inoue  Dangol Purushotam  Tetsuya Nishida  Jun Kobayashi 《地震工程与结构动力学》2006,35(13):1699-1719

To improve the seismic performance of masonry structures, confined masonry that improves the seismic resistance of masonry structures by the confining effect of surrounding bond beams and tie columns is constructed. This study investigated the earthquake resisting behaviour of confined masonry structures that are being studied and constructed in China. The structural system consists of unreinforced block masonry walls with surrounding reinforced concrete bond beams and tie columns. The characteristics of the structure include: (1) damage to blocks is reduced and brittle failure is avoided by the comparatively lower strength of the joint mortar than that of the blocks, (2) the masonry walls and surrounding reinforced concrete bond beams and tie columns are securely jointed by the shear keys of the tie columns. In this study, wall specimens made of concrete blocks were tested under a cyclic lateral load and simulated by a rigid body spring model that models non‐linear behaviour by rigid bodies and boundary springs. The results of studies outline the resisting mechanism, indicating that a rigid body spring model is considered appropriate for analysing this type of structure. Copyright © 2006 John Wiley & Sons, Ltd.  相似文献   

用碳纤维布改善混凝土小型空心砌块墙体抗震性能的试验研究   总被引：10，自引：0，他引：10  

于敬海  赵彤  罗振彪  谢剑 《地震工程与工程振动》2003,23(1):103-109

通过4片碳纤维布加固混凝土小型空心砌块墙体在周期反复荷载作用下受力性能的试验，研究了用粘贴碳纤维布来增强混凝土小型空心砌块墙体抗震能力这种加固方法的有效性。本文研究了碳纤维布加固混凝土小型空心砌块墙体的受力特性，分析了碳纤维布不同用量对混凝土小型空心砌块墙体抗震加固效果的影响。在此基础上，本文提出了碳纤维布加固混凝土小型空心砌块墙体抗剪承载力的简化计算方法，可供实际抗震加固工程设计参考。  相似文献   

基于性态的砌块砌体结构极限性态目标位移确定方法的研究   总被引：7，自引：0，他引：7  

屈成忠  谢礼立 《地震工程与工程振动》2003,23(2):18-25

对砌块砌体结构进行Push—over分析，其结果准确与否和结构的极限性态目标位移的可靠确定关系很大。本文基于大量的配筋砌块砌体墙片试验结果，对直接基于位移的抗震设计法进行改进，使之能够用于砌块砌体结构的极限性态目标位移的确定。用改进的方法求解一座1／4比例的10层砌块砌体模型结构的极限性态目标位移，并与该模型结构的振动台试验结果进行比较。结果说明本文提出的改进方法是可以应用于求解砌块砌体结构的极限性态目标位移的。  相似文献   

多层混凝土小型空心砌块与煤矸石页岩多孔砖组合砌体模型楼动力性能实测与分析   总被引：2，自引：0，他引：2  

田春艳  王宗纲  聂建国 《地震工程与工程振动》2003,23(4):105-110

对一个1：1比例的多层混凝土小型空心砌块与煤矸石页岩多孔砖组合砌体模型的抗震性能进行了试验研究。对该足尺试件在抗震性能试验的不同受力阶段进行了动力测试，分别得到了结构处于弹性、开裂、屈服和破坏状态下的频率、振型、阻尼等动力参数，分析了模型动力特性的变化特点及原因，为这种结构的抗震设计及动力分析提供了依据。  相似文献