Performance of steel mesh reinforced elastomeric isolation bearing: Experimental study
Performance of steel mesh reinforced elastomeric isolation bearing: Experimental study
复制标题
钢网增强弹性体隔震支座性能：实验研究
DOI：
10.1016/j.conbuildmat.2016.05.143
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发表时间：
2016-09
影响因子：
7.4
通讯作者：
Wei Kai
中科院分区：
文献类型：
--
作者：
Li Han;Tian Shengze;Dang Xinzhi;Yuan Wancheng;Wei Kai
本文研制了一种新型弹性隔震支座，其加强件采用高强度钢网制造。为了考察新体系的压缩和剪切变形性能，对8个部分参照我国现行标准的足尺钢网增强弹性隔震支座(SMREIB)进行了静力试验。然后进行了准静态试验，比较了SMREIB轴承和传统轴承的性能。在轴压和反向循环侧向位移联合作用下进行了参数试验。试验参数包括竖向压缩、剪应变大小、加载频率、加载波形和加载方向。计算了支座的本构模型和滞回耗能能力。试验结果表明，通过滚压和滚压变形，SMREIB的极限剪切变形可以达到支座总高度的300%，超过了我国标准规定的100%橡胶总厚度的限值，其水平等效刚度也有所降低。橡胶总厚度较大是SMREIB的主要优点，但会影响支座的水平力学性能和滞回耗能能力。试验结果为数值模型的建立提供了依据，可以帮助工程设计人员在实际桥梁中应用SMREIB。
This paper developed a new type of elastomeric isolation bearings, of which the reinforcing element is manufactured by high-strength steel mesh. In order to investigate the compressive and shear deformation performance of the new system, eight full-scale steel mesh reinforced elastomeric isolation bearings (SMREIB) with details partly referring to current Chinese standard were studied by static experiment. Then quasi-static tests were carried out to compare the performance of both SMREIB and traditional bearings. Parametric tests were made under combined axial compression and reversed cyclic lateral displacement. Test parameters, including vertical compression, shear strain magnitude, loading frequency, loading waveform and loading direction, were investigated. The constitutive model and hysteresis energy dissipation capability of bearings were figured out. The experimental results indicate that the ultimate shear deformation of SMREIB can reach 300% total bearing height, which exceeds Chinese standard limits of 100% total rubber thickness, by rolling-off and rolling-over deformation, and its horizontal equivalent stiffness gets lower. Larger total rubber thickness, which is the main advantages of SMREIB, affects the horizontal mechanic property and hysteresis energy dissipation capability of bearing. Experimental result provides us the basis for the development of numerical model, which can help engineers design and apply SMREIB in the practical bridges.
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影响因子：
5.5
作者：
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通讯作者：
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影响因子：
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DOI：
10.1016/j.ijsolstr.2004.06.005
发表时间：
2004-12
影响因子：
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作者：
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通讯作者：
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