单吊点、无风撑梁拱组合体系桥梁受力特性分析OA
Analysis of Force of Single Suspension Point and No-wind Braced Beam-Arch Combination Bridges
单吊点、无风撑梁拱组合体系桥梁造型新颖,但与常规梁拱组合体系桥梁相比,其受力存在差异,拱肋面外稳定问题突出.因此,研究了在恒载作用下的矢跨比、拱轴线、拱梁刚度比和吊杆倾角4个结构设计参数对结构内力和拱肋面外稳定性的影响,得出的结论是:大矢跨比可以降低拱肋轴力、提高面外稳定性,有效降低拱脚弯矩,但会增大拱顶弯矩;直线型的拱轴线可以更好地贴近于压力线,拱肋受力形式表现为轴压,但其面外屈曲系数有所降低;拱梁刚度比越大,拱顶承担荷载能力就越强,可以降低拱…查看全部>>
The single suspension point and no-wind braced beam-arch combination bridge is novel.Compared with conventional beam-arch combination system bridges,there are force differences and prominent problem of out of plane stability of arch ribs.The influence of four structural design parameters,namely the rise span ratio,arch axis,arch beam stiffness ratio and boom topping angle on the internal force and out of plane stability of arch ribs under constant load are s…查看全部>>
袁卫兵
北京国道通公路设计研究院股份有限公司,北京 100161
交通运输
单吊点无风撑矢跨比拱轴线拱梁刚度比吊杆夹角
single suspension pointno-wind bracedrise span ratioarch axisarch beam stiffness ratioboom topping angle
《市政技术》 2024 (9)
26-31,6
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