现场发泡夹心墙平面外抗震性能模型试验与数值试验研究

THE MODEL TESTS AND NUMERICAL TESTS OF OUT-PLANE SEISMIC PROPERTY OF FOAM-IN-PLACE CAVITY WALL

为研究现场发泡夹心墙平面外抗震性能,寻求改善墙体抗震性能的有效手段,制作了7片现场发泡夹心墙和1片实心墙,进行了平面外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。研究结果表明梁挑耳对内外页墙体具有较大的协调变形能力,塑料钢筋拉接件可以起到对开裂墙体支撑或拉结的作用,有效防止墙面倒塌掉落。变形性能分析结果表明现场发泡夹心墙的耗能能力较大、延性系数较高,并且具有良好的协调变形能力。

In order to study on the out-plane seismic property of foam-in-place cavity walls, and seek the effective measures to improve the deformation capacity and overall performance of a cavity wall, 7 patches of foam-in-place cavity walls and 1 patch of a solid wall are built, and the model tests and numerical tests of out-plane seismic properties are carried out. The comparison indicates that the failure patterns, carrying capacity, deformation ability and coordination deformation ability of the numerical tests are agree with the data of model tests, and that the validity and accuracy of the model tests and numerical tests are both verified. The research shows that reinforced concrete transverse connecting beams play an important role in guaranteeing out-planes stability of the external wall. When wall cracks seriously, the steel ties coated plastic can play an important role in preventing the wall from collapse. The research results of deformation behavior show that foam-in-place cavity walls have the better ductility and energy dissipation and the internal as well as external wall of foam-in-place cavity wall have very well coordinatindeformation capacitv.