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钢板-砖砌体组合结构托换是一种新型的、对既有砌体房屋进行大空间改造加固的技术。为了掌握钢板-砖砌体组合梁的弯剪扭复合受力性能,共完成了6根钢板-砖砌体组合梁在弯剪扭复合作用下的静载试验;考虑了外包钢板厚度、螺栓间距与设置钢盖板对钢板-砖砌体组合梁的影响,得到其破坏形态、极限承载力、扭矩-扭率曲线以及钢板的应变。试验结果表明:钢板厚度以及设置钢盖板对钢板-砖砌体组合梁的承载力与刚度的影响较大,螺栓间距对承载力的影响较小。此外,在工程应用中应加强梁间节点设计。
Steel plate - brick masonry structure underpinning is a new type of existing masonry building large space transformation and reinforcement technology. In order to grasp the combined bending and torsional behavior of steel-brick composite beam, the static load test of six steel-brick composite beams under the combination of bending and torsional torsion has been completed. The thickness of the steel plate, The influence of setting steel plate on the steel-brick composite beam was obtained, and its failure mode, ultimate bearing capacity, torque-torsion curve and strain of steel plate were obtained. The test results show that the thickness of the steel plate and the effect of the steel cover plate on the bearing capacity and the rigidity of the steel-brick composite beam are large, and the influence of the bolt spacing on the bearing capacity is small. In addition, the node design between beams should be strengthened in engineering applications.