【摘要】 针对伊家河钢筋混凝土刚架拱桥所产生的病害 ,利用空间有限元建立全桥模型 ,分析了横系梁对刚架拱桥横向整体刚度的影响 ,指出在刚架拱桥的设计 ,特别是在施工中应重视横系梁与拱片的有效联结。还对单块微弯板进行了空间静力分析 ,进一步说明了造成微弯板病害的力学机理 ,对刚架拱桥的设计具有较好的借鉴作用更多还原

【Abstract】 Through the space finite element method, a whole bridge model is established, and it is used in analyzing the causes of defects arisen from Yijia River RC rigid frame arch bridge, and the effect of diaphragms on the cross rigidity of whole bridge can be found. So in the design and construction of rigid frame arch bridge, the effective connection between diaphragms and arch ribs should be emphasized. The space statics analysis on a piece of slightly curved plate gives reasons of cracks in slightly curved slabs. This method can contribute to the design of rigid frame arch bridge greatly.更多还原