共查询到15条相似文献，搜索用时 390 毫秒
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双向单排配筋中高剪力墙抗震性能试验研究 总被引：5，自引：1，他引：4
双向单排配筋剪力墙结构适用于多层住宅结构。本文进行了1个普通双向双排配筋混凝土中高剪力墙、2个双向单排配筋混凝土中高剪力墙和1个带暗支撑双向单排配筋混凝土中高剪力墙的低周反复荷载试验,以研究双向单排配筋混凝土中高剪力墙的抗震性能及暗支撑对这种新型墙体结构的作用。较系统地分析了其承载力、刚度及其退化过程、延性、耗能、破坏机制和破坏特征等。试验表明,经过合理设计,这种双向单排配筋混凝土中高剪力墙可以满足多层住宅结构抗震要求。 相似文献
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双向单排配筋混凝土低矮剪力墙抗震性能试验研究 总被引：6，自引：2，他引：4
双向单排配筋混凝土低矮剪力墙适用于多层住宅结构。对4个原型的剪跨比为1.0配筋混凝土低矮剪力墙进行了低周反复荷载试验研究,包括1个双向双排配筋混凝土低矮剪力墙和3个双向单排配筋混凝土低矮剪力墙。其中1个双向单排配筋混凝土低矮剪力墙加设暗支撑,用以研究暗支撑对这种新型墙体的作用。在试验研究的基础上,对比分析了各剪力墙的刚度及其衰减过程、承载力、延性、滞回特征、耗能能力及破坏特征。试验表明,经过合理设计,这种双向单排配筋混凝土低矮剪力墙可以满足多层住宅结构抗震要求。 相似文献
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带斜筋单排配筋混凝土剪力墙结构是为取代粘土砖多层住宅结构而发展起来的一种新型多层混凝土结构,其经济性合理,抗震性能优于传统的砌体结构.为进一步充分了解其抗震性能,开展该新型结构体系中“L”形截面剪力墙的非工程轴方向抗震性能试验研究.进行1个单排配筋混凝土“L”形截面剪力墙和1个带斜筋的单排配筋混凝土“L”形截面剪力墙低周反复荷载试验,对比分析其破坏特征、滞回特性、耗能能力、承载力、延性、刚度,并利用ABAQUS软件进行非线性有限元分析,探究斜筋对其抗震性能的影响.研究结果表明,在非工程轴方向,带斜筋单排配筋“L”形截面混凝土剪力墙的抗震性能优于不带斜筋的剪力墙. 相似文献
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提出了新型构造的半装配式、全装配式单排配筋再生混凝土剪力墙,为研究其中高剪力墙的抗震性能,进行了2个半装配式、1个全装配式和1个全现浇单排配筋再生混凝土中高剪力墙试件的低周反复荷载试验,对比分析了各试件的破坏形态、滞回特性、承载力、延性、刚度退化、耗能能力及钢筋应变。结果表明:半装配式单排配筋中高剪力墙与全现浇剪力墙相比,承载力接近,滞回曲线均较饱满,耗能能力相差不大;全装配式试件与半装配式试件相比,承载力低,延性和抗震耗能能力差;随着轴压比的增大,半装配式剪力墙的承载力、耗能能力明显提高。 相似文献
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双向单排配筋剪力墙节点抗震性能试验研究 总被引：3，自引：1，他引：2
双向单排配筋剪力墙结构适用于多层住宅结构。为了研究不同构造及不同连梁剪跨比的节点抗震性能,进行了5个连梁与墙肢节点的低周反复荷载试验。较系统地分析了其承载力、刚度及其退化过程、延性、耗能、破坏机制和破坏特征等。试验表明,经过合理设计,这种双向单排配筋剪力墙节点可以满足抗震要求。 相似文献
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我国混凝土结构工程中目前应用的非预应力钢筋强度为300~400MPa,比发达国家低1~2个等级,结构材料用量偏大,消耗了过多的资源和能源。通过拟静力试验,对两片HRB500级钢筋网轻骨料混凝剪力墙分别进行了在低周期反复荷载作用下受力性能的研究,观测了墙体的整个破坏过程,分析了墙体的强度、底部剪切变形和抗震性能。试验及分析表明,剪力墙具有较大的延性和耗能能力,为HRB500级钢筋用作抗震剪力墙的分布筋提供了试验依据。 相似文献
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SRC框格复合墙是在普通RC密肋复合墙基础上结合型钢混凝土概念而提出来的一种复合墙板,以轻钢龙骨代替框格内原有纵向受力钢筋,通过焊接或螺栓连接在梁柱轻钢龙骨节点处实现刚性或半刚性连接.在SRC框格复合墙模型试验基的础上,利用ANSYS程序对墙体受力过程进行了非线性有限元分析,提出了SRC框格复合墙抗剪承载力的实用计算公式,并对框格含钢率、轻钢强度等影响因素进行了有限元分析.研究结果表明:所提出的SRC框格复合墙抗剪承载力计算公式,与非线性有限元计算结果吻合较好,能够适应框格含钢率等不同因素变化的计算精度要求;提高肋梁中轻钢强度或含钢率可以有效提高墙体抗剪承载力,而不宜单独采用提高混凝土强度的方法. 相似文献
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Research on seismic performance of shear walls with concrete filled steel tube columns and concealed steel trusses 总被引：1，自引：1，他引：0
In order to further improve the seismic performance of RC shear walls, a new composite shear wall with concrete filled steel
tube (CFT) columns and concealed steel trusses is proposed. This new shear wall is a double composite shear wall; the first
composite being the use of three different force systems, CFT, steel truss and shear wall, and the second the use of two different
materials, steel and concrete. Three 1/5 scaled experimental specimens: a traditional RC shear wall, a shear wall with CFT
columns, and a shear wall with CFT columns and concealed steel trusses, were tested under cyclic loading and the seismic performance
indices of the shear walls were comparatively analyzed. Based on the data from these experiments, a thorough elastic-plastic
finite element analysis and parametric analysis of the new shear walls were carried out using ABAQUS software. The finite
element results of deformation, stress distribution, and the evolution of cracks in each phase were compared with the experimental
results and showed good agreement. A mechanical model was also established for calculating the load-carrying capacity of the
new composite shear walls. The results show that this new type of shear wall has improved seismic performance over the other
two types of shear walls tested. 相似文献
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The seismic performance of a self-centering precast reinforced concrete (RC) frame with shear walls was investigated in this paper. The lateral force resistance was provided by self-centering precast RC shear walls (SPCW), which utilize a combination of unbonded prestressed post-tensioned (PT) tendons and mild steel reinforcing bars for flexural resistance across base joints. The structures concentrated deformations at the bottom joints and the unbonded PT tendons provided the self-centering restoring force. A 1/3-scale model of a five-story self-centering RC frame with shear walls was designed and tested on a shake-table under a series of bi-directional earthquake excitations with increasing intensity. The acceleration response, roof displacement, inter-story drifts, residual drifts, shear force ratios, hysteresis curves, and local behaviour of the test specimen were analysed and evaluated. The results demonstrated that seismic performance of the test specimen was satisfactory in the plane of the shear wall; however, the structure sustained inter-story drift levels up to 2.45%. Negligible residual drifts were recorded after all applied earthquake excitations. Based on the shake-table test results, it is feasible to apply and popularize a self-centering precast RC frame with shear walls as a structural system in seismic regions. 相似文献
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圆钢管混凝土边框剪力墙抗震性能试验研究 总被引：1，自引：0，他引：1
圆钢管混凝土边框剪力墙是在普通混凝土剪力墙基础上研发的一种新型组合剪力墙。其将圆钢管混凝土柱和普通混凝土剪力墙进行了优势组合,形成多道抗震防线。为了解该组合剪力墙的抗震性能,进行了3个1/5缩尺试件的低周反复荷载试验,其中包括1个圆钢管混凝土柱框架结构、1个普通混凝土剪力墙和1个圆钢管混凝土边框剪力墙。在试验研究基础上,分析了圆钢管混凝土边框剪力墙的承载力、刚度及其退化过程、延性、滞回特性、耗能能力及破坏特征。研究表明:圆钢管混凝土边框剪力墙的抗震性能比普通混凝土剪力墙显著提高,且其承载力、抗震耗能能力均高于圆钢管混凝土柱框架和普通混凝土剪力墙承载力、抗震耗能能力之和,可用于高层和超高层建筑的抗震设计。 相似文献