弯曲桥梁抗倾覆性能分析与加固设计

The overturning resistance stability analysis and reinforcing design for the curved bridge

抗倾覆性能是曲线桥梁的一项重要安全性指标。对于某高速公路工程平面弯曲梁桥,通过空间有限元建模分析,计算了弯曲混凝土连续箱梁的抗倾覆稳定系数与支座反力,并进行了抗倾覆加固设计。由分析验算结果可知,钢板混凝土盖梁加固措施受力简明、施工方便,宜用于快捷加固独柱墩弯曲桥梁以增强其抗倾覆性能。

Overturning resistance capability is a important security target for the curved bridge.For example of the expressway curved ramp bridge,according to the spaced FEA method,the overturning resistance stability factor and support reaction of the curved concrete continuous box girder was calculated,and reinforcing design was proposed.According to the analytical results,reinforcing measures of steel concerete coping was practicable and simple to reinforce the curve bridge of single column pier,so that the overturning resistance capability was enhanced.