现场发泡夹心墙平面内抗震性能模型试验与数值试验

为研究现场发泡夹心墙平面内抗震性能,寻求改善墙体抗震性能的有效手段,制作了13片现场发泡夹心墙和1片实心墙,进行了平面内的抗震性能模型试验和数值试验研究.对比分析表明,现场发泡夹心墙的破坏形态、承载力、变形能力和协调变形能力等二者均较好吻合,相互验证了二者的有效性.研究结果表明,钢筋混凝土梁挑耳有效地加强内外叶墙连接、可靠地传递内力;拉接件也具有一定的作用,并在墙体大变形的情况下,对保证开裂墙体不致脱落、倒塌起到有效作用.现场发泡夹心墙内外叶墙能够协同工作,具有良好的整体工作性能,承载力计算时应考虑外叶墙的有利影响.模型试验与数值试验结果均表明,现场发泡夹心墙具有较高的承载能力和较好的内外叶墙协同工作性能.

Model Tests and Numerical Tests of In-Plane Seismic Property of Foam-In-Place Cavity Wall

In order to study on the in-plane seismic property of foam-in-place cavity wall,and seek the effective measures to improve deformation capacity and overall performance of the cavity wall,13 patches of cavity walls and 1 patch of solid wall are built,and the model tests and numerical tests of the in-plane seismic property of foam-in-place cavity wall are carried out.The comparison indicates that the failure patterns,carrying capacity,deformation ability and coordination deformation ability of the numerical tests of foam-in-place cavity wall are agree with the data of model tests,and the validity and accuracy of the model tests and numerical tests are both verified.The experimental research shows that reinforced concrete strip ears play an important role in guaranteeing out-planes stability of the external wall.When wall crack seriously,the ties can play an important role in supporting and drawing the wall and preventing wall collapse.The reinforced concrete strip ears and ties are the main construction measures to coordinate the internal and external wall work together.Moreover,deformation capacity the cavity wall is improved efficiently with constructional column.According to working interactively between the internal and external wall of foam-in-place cavity wall,beneficial effects of external wall of foam-in-place cavity wall should be considered when anti-seismic shear resistance capacity is calculated.The results of model tests and numerical tests show that foam-in-place cavity walls have high bearing capacity and good coordination deformation capacity.