RCS组合节点有限元建模及试验验证研究

Finite element modeling of RCS composite joints and experimental verification

钢筋混凝土柱-钢梁是一种新型组合结构形式,其充分发挥了两种材料各自的优势,具有施工速度快,材料利用率高,耗能良好等优点。但其材料的非线性,混凝土的开裂加大了有限元分析的难度,至今尚未形成统一合理的方法。提出了一种针对RCS组合节点的有限元建模方法,对其非线性求解的参数设置进行了讨论,并且和试验结果进行对比分析,研究得出:利用提出的方法对RCS组合节点进行有限元分析结果是可靠的,同时指出部分切除部分翼缘的做法对节点传力影响并不大,并且利于施工,在实际的施工中值得借鉴。

As a new type of composite structure,reinforced concrete column and steel beam（RCS）makes full use of the advantages of two different materials.It has the advantages of fast construction speed,high material utilization ratio,good energy consumption,etc.Because the effect of material non-liner constitutive relations and concrete cracking have increased the difficulty of the finite element analysis,it has not yet formed a unified and reasonable method.A finite element modeling method for RCS composite joints is proposed and the parameter setting of the non-linear solution is discussed.The analytical results were compared with the experimental results.The result shows that the results of finite element analysis to RCS composite joints are reliable by using the method proposed.It also points the method with tapered-flange-type details has little influence on the force transferring.And it benefits to the construction,which should be worth to use for reference in the actual construction.