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钢–混凝土组合梁比传统的组合梁更有优势。基于推出试验,建立三维非线性有限元模型,用于分析钢–混凝土组合梁的力学性能。通过数值分析结果和试验结果的对比,证实了该模型的有效性。特定参数影响分析包括:黏合剂的弹性模量,黏结层的厚度,混凝土强度,黏结强度及黏结面积。数值结果显示:当黏结层的厚度为3～15mm时,大多数分析的参数对钢-混凝土组合梁的影响非常显著。
Steel-concrete composite beams have advantages over traditional composite beams. Based on the launch test, a three-dimensional nonlinear finite element model was established for analyzing the mechanical properties of steel-concrete composite beams. The validity of this model is verified by comparing numerical results with experimental results. Specific parameter impact analysis includes: the elastic modulus of the adhesive, the thickness of the adhesive layer, the strength of the concrete, the bond strength and the bonded area. The numerical results show that when the thickness of the adhesive layer is 3 ~ 15mm, the influence of most of the parameters analyzed on the steel-concrete composite beam is very significant.