TY -的A2 Ozmen Hayri Baytan盟——沈,川东盟歌,一帆盟——燕,Lei AU -李,元盟- Ma,小薇盟——他,Shuanhai AU -汉,小东PY - 2021 DA - 2021/05/12 TI -轴承行为的实验和数值研究弯曲连续双工字大梁复合桥梁预制混凝土板SP - 8872092六世- 2021 AB -弯曲双工字大梁复合桥(TGCB)在中国公路桥梁建设越来越受欢迎。研究其轴承极限行为,在这篇文章中,一个1:5规模完整的模型双跨度曲线连续TGCB测试未能评估其安全储备和延性。之后,基于实验结果,3 d有限元模型被开发和验证。最后,使用3 d有限元模型,验证施工方案的影响,曲率半径,钢的屈服强度,混凝土抗压强度、大梁、底侧撑在极限承载力研究。实验结果表明,极限荷载(Pu)近似服务等效负荷的13.6倍。开裂荷载和屈服荷载约0.12和0.47 Pu,分别。延性系数是4.06∼4.40。以上可能表明TGCB设计根据中国码具有良好的安全储备和延性。从参数分析结果,得出结论,TGCB和一支专业施工方案有较大的屈服载荷和极限载荷与装配机施工方案。另一方面,减少非线性极限承载力随曲率的增加。 Besides, the yield strength of steel, crossbeams, and bottom lateral bracings has a significant effect on the ultimate bearing capacity of curved TGCB. And the smaller the radius of curvature, the more obvious the effect of the latter two factors is. Unfortunately, it is unwise to continuous to improve the ultimate load by increasing the grade of steel for the TGCB when steel grade exceeds Q390. Moreover, in consideration of the big difference in bearing capacity between the inner girder and outer girder of the TGCB with small radius of curvature as well as the economy, it is suggested that the inner and outer steel girders of that TGCB should be designed differently. SN - 1687-8086 UR - https://doi.org/10.1155/2021/8872092 DO - 10.1155/2021/8872092 JF - Advances in Civil Engineering PB - Hindawi KW - ER -