高墩大跨连续刚构桥的温度效应研究

为了研究高墩大跨连续刚构桥在温度荷载作用下的影响,以实际桥梁工程为背景,建立其数值分析计算模型,分别考虑了我国公路桥梁设计规范、英国BS-5400规范和日本规范三种不同规范的温度荷载模式.通过对关键截面的应力水平、挠度变化进行对比研究,结果表明,不同设计规范的温度荷载模式对高墩大跨连续刚构桥的力学行为特征引起差异较大.

Temperature Effect Studies on High Pier Large Span Continuous Rigid Frame Bridge

In order to study the effect of high pier large span continuous rigid frame bridge under the temperature load effect, taking the background of real bridge engineering, building numerical analysis calculation model, considering respectively three different specifications of temperature load models of bridge design specification of our country highway, British BS -5400 specification and Japanese specification. It turned out that the temperature load model of different design specifications cause larger discrepancy for mechanical behavior characteristics of high pier large span continuous rigid frame bridge through comparative study on the stress level and the deflection change of key section.