引用本文: 蒋中祥. 公路桥梁内力包络图的仿真计算[J]. 力学与实践, 2006, 28(1).
SIMULATION OF INTERNAL FORCE'S ENVELOPE DIAGRAM FOR HIGHWAY'S BRIDGES[J]. MECHANICS IN ENGINEERING, 2006, 28(1).
 Citation: SIMULATION OF INTERNAL FORCE'S ENVELOPE DIAGRAM FOR HIGHWAY'S BRIDGES[J]. MECHANICS IN ENGINEERING, 2006, 28(1).

SIMULATION OF INTERNAL FORCE'S ENVELOPE DIAGRAM FOR HIGHWAY'S BRIDGES

• 摘要: 移动荷载作用下的内力包络图的计算是一个典型的可以用计算机仿真解决的问题.用计算机模拟汽车荷载在公路桥梁上以小步长移动，每一步画出桥梁结构的内力图. 当汽车荷载通过桥梁时，这些内力图将填充成一个区域. 这个区域的上、下边界线就是桥梁结构的内力包络图. 内力包络图的算法不依赖影响线的概念，在理论和实践上，简化了内力包络图的计算.

Abstract: The calculation of internal force's envelope diagram fora bridge under moving loads is a typical problem which can besolved by the computer simulation. In this paper, a computersimulation is made forthe vehicle load moving on a highway's bridge with a small steplength. For each step, the internal force diagram is plotted. When the vehicle load moves through the bridge,these internal force diagrams will fill in a region. The up-lowerboundary of the region is just the internal force envelope diagram. Thealgorithm in this paper does not depend uponthe concept of the influence line, hence the calculation is simple.

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