双柱式花瓶墩横梁剪切破坏加固研究

Research on the Reinforcement of Beam Shear Failure of Double-column Vase-style Piers

以某桥梁双柱式花瓶墩横梁出现的八字形斜裂缝为研究对象,利用Midas Fea有限元软件,结合相关规范对深受弯构件进行计算,找出桥墩横梁造成偏载侧剪切破坏引起开裂原由,同时对该裂缝发展的趋势进行分析判断。通过常规的几种剪切破坏加固方法对比确定加固方案,并对承台、桩基、上部端横梁等进行验算。

In this thesis,Midas Fea Finite Element Software was applied to calculate the deeply bending members according to relevant norms by taking the inclined crack of a Double-column Vase-style Pier beam of a bridge as the research object.According to this research process,the reason of the cracking caused by the shear failure on the load-side of the pier beam was revealed.Meanwhile,the development trend of the crack was analyzed and judged through this method.The reinforcement plan was also determined by comparing several conventional shear failure reinforcement methods with checking the final data of the cap,pile foundation,upper end beam,etc.