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以钢板代替受力钢筋,通过栓钉将外侧钢板与内部混凝土板相连,二者共同作用形成钢板-混凝土组合板。根据钢板布置形式的不同,可将钢板-混凝土组合板分为单面钢板-混凝土组合板(SSC)和双面钢板-混凝土组合板(DSC)。通过对4个SSC试件和3个DSC试件的受弯试验研究,分析了不同钢板厚度、抗剪连接程度以及构造钢筋配置对组合板受弯性能和破坏形态的影响。试验结果表明,按完全抗剪连接设计的试件破坏形态与适筋梁相似,具有良好的受弯承载能力和延性;当受拉区钢板采用部分抗剪连接设计时,剪跨区栓钉易剪断导致承载力明显降低;当受压区钢板采用部分抗剪连接设计时,顶层钢板易发生局部屈曲,导致试件承载力和延性有所降低。基于试验结果,给出了钢板-混凝土组合板的受弯承载力计算式,计算值与试验值吻合较好。
The steel plate instead of the force reinforcement, the outer steel plate through the peg connected to the internal concrete, the two together to form steel - concrete composite plate. According to the layout of the steel sheet, the steel-concrete composite panels can be divided into single-sided steel-concrete composite panels (SSC) and double-sided steel-concrete composite panels (DSC). Through the bending test of four SSC specimens and three DSC specimens, the influence of different thickness of steel sheet, the degree of shear connection and the configuration of reinforced bar on the bending behavior and failure morphology of the composite sheet were analyzed. The test results show that the failure mode of the specimen designed by the complete shear connection is similar to that of the compliant beam, and has good flexural bearing capacity and ductility. When the partial shear connection design of the tension zone steel sheet is adopted, When the compressive zone steel plate is partially shear-resistant, the local buckling of the top steel plate tends to occur, which leads to the reduction of the bearing capacity and ductility of the test piece. Based on the test results, the formulas for calculating the flexural capacity of steel-concrete composite plates are given, and the calculated values are in good agreement with the experimental values.