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介绍并分析混凝土浇筑前后的混合钢桁架-混凝土梁推出试验的结果。首先,为了检验浇筑前的焊接能力,对不同焊接节点的试验模型进行拉伸试验。使用简化设计公式预测其极限强度。其次,对代表梁浇筑前后的试验模型进行推出试验,介绍并讨论所得到的试验结果。最后,根据现有的欧洲建筑规范提出一个用于特殊类型的简化分析模型,可以初步预测出混凝土浇筑的试验模型在推出试验中获得的极限强度。
Introduce and analyze the results of the launch test of the hybrid steel truss-concrete beam before and after concrete pouring. First, in order to test the welding ability before pouring, the tensile test was carried out on the test model of different welded joints. Use a simplified design formula to predict the ultimate strength. Secondly, the test model before and after the beam pouring is put forward, and the test results obtained are introduced and discussed. Finally, based on the existing European building codes, a simplified model for a particular type is proposed, which can initially predict the ultimate strength of the test model of concrete pouring in the launch test.