河道中拟建整体式道路平台设计方案分析

Analysis on Design Scheme of Integrated Road Platform Constructed in River Course

河道中涉水工程的建设,由于河底地基及工程受力特点的特殊性,极易发生不均匀沉降及基底应力过大的情况。借助三维有限元数值分析软件,针对河道中道路平台的沉降及基底应力情况进行了模拟分析。结果表明:河道中道路平台从建设到运用的各个阶段,平台底板的沉降相对比较均匀,没有明显的差异沉降;此外,道路平台的基底应力值分布相对不均,底板两侧及柱端基底应力相对较大,底板中部基底应力相对较小,但是基底应力在地基承载能力范围之内。因此,河道中该种整体型的道路平台的设计方案是可行的。

The construction project in the river will easily bring the situations of different settlement and overlarge base stress owing to the particularities of river base and engineering stress.The three-dimensional finite element numerical analysis software is used to simulate and analyze the settlement and base stress of road platform in river.The result shows that the settlements of platform baseplate are relatively more even from the construction to operation of road platform in river without the obvious different settlement In addition,the base stress value of road platform is not relatively distributed,the stresses at both sides of baseplate and at the end of column are relatively larger,and the base stress in the middle of baseplate is relative smaller.But the base stress is within the range of carrying capacity of base.Therefore,the design scheme of this integrated road platform in river is feasible.