重庆石板坡长江大桥复线桥温度效应分析

温度应力是大型桥梁结构开裂及变形的重要影响因素之一。以石板坡长江大桥复线桥为背景，采用通用有限元程序MIDAS—Civil参考我国公路桥梁设计规范以及英国BS5400规范，首先研究了截面温度梯度和体系温变对该桥应力及变形的影响规律，然后将截面温度梯度和体系升温效应线性组合，探讨了它对复线桥的影响，并与移动荷载产生的效应进行了对比。研究结果对石板坡复线桥及同类桥梁结构的设计具有一定参考价值。

Temperature Effect Analysis of Chongqing Shibanpo Yangtze River Double Line Bridge

Thermal stress is one of the important influence factors of crack and deformation for large-span bridge structures. Grounded on Shibanpo Yangtze River double line bridge and universal finite element program MIDAS-Civil with referring to specifications of China and British BS5400, above all, it is for this Bridge that the stress and deformation influence is studied by setting section temperature difference and system temperature change, afterwards, the effect on the newborn bridge is discussed by combining impact of the section temperature difference and the system-calefaction linearly , and then, the effect is compared with the impact brought by moving load. The results will have a certain extent value for the design of ShiBanpo double line bridge and other similar bridges.