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本文研究了在不断增长的外加荷载作用下的顶应力混凝土曲线箱梁桥的响应。推导了钢筋混凝土和预应力混凝土结构非线性分析的数学模式,分析模式中考虑了弯矩、扭矩和剪力的相互作用。利用此数学模式,研究了在不同荷载条件下预应力混凝土曲线梁桥的响应,得出了曲线梁桥非线性特性的一些带有普遍性的结论,提出了一些设计准则。
In this paper, the response of the top-stressed concrete curved box girder bridge under the continuously increasing external load is studied. The mathematical model of nonlinear analysis of reinforced concrete and prestressed concrete structures is deduced. The interaction between bending moment, torque and shear is taken into consideration in the analysis mode. Using this mathematical model, the response of prestressed concrete curved beam bridge under different load conditions was studied. Some general conclusions were drawn and some design criteria were proposed.