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整体式桥台桥梁是一种无伸缩缝且主梁与桥台连为一体的新型桥梁结构,目前在国内实际工程中应用较少而且未形成一套完善的设计体系,其结构设计仍处于技术摸索阶段。采用Midas/Civil有限元软件建立3×16 m中等跨径整体式桥台桥梁的二维弹簧框架模型;并依托实际工程——富裕工业园跨线桥试验数据,对有限元模拟方法和模型的受力性能进行了验证。在不同地质条件和温度荷载作用下,通过调整有限元模型探讨了桥台高度在3~6 m变化时对中等跨径整体式桥台桥梁结构受力性能的影响。计算表明,在3~6 m范围内,适当改变桥台高度不会对设计造成太大影响,这为中等跨径整体式桥台桥梁的结构设计提供了参考依据。
Integral bridge abutment is a kind of new bridge structure without expansion joints and the main girder and the abutment are integrated. Currently, there are few applications in the actual engineering in China and a complete design system is not formed. Its structural design is still in the technical Groping stage. The Midas / Civil finite element software is used to build a two-dimensional spring frame model of 3 × 16 m medium-span integral bridge abutment bridge. Based on the actual engineering-test data of the cross-bridge bridge of FEI Industrial Park, the finite element simulation method and model Force performance has been verified. Under the influence of different geological conditions and temperature loads, the influence of the abutment height on the mechanical performance of the bridge structure with medium span is investigated by adjusting the finite element model. The calculation shows that within 3 ~ 6 m range, changing the abutment height properly will not affect the design too much, which provides a reference for the structural design of the bridge with medium span.