空腔厚度对现场发泡夹心墙抗震性能影响分析

THE EFFECTS OF CAVITY THICKNESS ON SEISMIC BEHAVIOR OF FOAM CORE SANDWICHED WALLS

  • 摘要: 为研究空腔厚度对现场发泡夹心墙平面内、平面外抗震性能的影响,对20 片现场发泡夹心墙和2 片实心墙进行平面内、平面外受力的数值试验和模型试验,并验证数值试验的正确性和有效性. 对不同空腔厚度的现场发泡夹心墙进行平面内、平面外受力的数值试验研究. 结果表明平面内受力时,对相对位移差的影响最明显,平面外受力时,对承载力的影响最明显. 总体上看,对平面内的影响要大于对平面外的影响. 墙体的协调变形能力随空腔厚度的增加而明显降低,因此建议在高烈度区现场发泡夹心墙的空腔厚度不宜大于100 mm.

     

    Abstract: In order to study the effect of cavity thickness on the seismic properties of foam core sandwiched wall, model tests and numerical simulations of the in-plane and out-of-plane seismic properties of 20 patches of foam core sandwiched wall and 2 patches of solid wall are carried out, and the validity and the accuracy of the numerical simulations are verified. The numerical simulations of the in-plane and out-plane seismic properties of the foam core sandwiched wall of different cavity thicknesses are carried out. The relative displacement difference is most remarkably affected by the cavity thickness when the foam core sandwiched walls are loaded in-plane; the seismic bearing capacity is most remarkably affected by the cavity thickness when the foam core sandwiched walls are loaded out-plane. In general, the cavity thickness has a greater effect on the in-plane seismic property than on the out-of-plane seismic property. The deformation coordination capacity will be reduced remarkably when the cavity thickness increases. It is therefore recommended that cavity thickness is not greater than 100mm in the buildings of high earthquake intensity regions.

     

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