【摘要】 由于在战争中受到炮弹轰炸,某桥拱肋发生明显的侧向变形,致使在正常使用状态下拱脚外包混凝土严重开裂。为了深入分析病害成因及其对桥梁极限承载能力的影响,分别采用线性和非线性的分析方法研究了桥梁的整体稳定性和极限承载能力。分析表明,拱肋变形降低了结构的极限承载能力,并增大了其在正常使用状态下的侧向变形,以致拱脚外包混凝土开裂严重。更多还原

【Abstract】 Due to being bombed in the war,the arch has an obvious distortion,which leads to cracks of concrete wrapped around arch.In order to investigate pathology of concrete cracks and its effect on structural ultimate load bearing capacity,global stability and ultimate load bearing capacity of this bridge are studied with linear and nonlinear analysis methods respectively.The results show that the arch distortion weakens structural ultimate load bearing capacity,and increases lateral displacement at the bottom of the arch so that the concrete wrapped around arch cracks seriously.更多还原