某河道工程驳岸结构方案分析

Analysis on revetment structure scheme of riverway project

结合某河道治理项目,针对局部较窄河段两岸存在居民房屋及地下管线时岸坡开挖稳定问题,进行U形混凝土沟渠+单侧排桩支护结构受力分析及河槽开挖岸坡稳定性研究,采用整体计算模式及竖向弹性地基梁法分别计算U形混凝土结构及排桩支护结构的内力及位移。结果表明,U形混凝土沟渠+单侧排桩支护结构安全、可靠,最大位移为29. 03 mm,满足规范中水平位移≤30 mm的要求,且施工方便、经济合理,为类似工程提供借鉴。

Combined with a river regulation project,aiming at the problem of slope excavation stability when residents’ houses and underground pipelines exist on both sides of a narrow section of the river,we carry out the stress analysis of U-shaped concrete ditch +single-row pile supporting structure and the study of slope stability of channel excavation,and use the whole calculation mode and method of vertical elastic grade beam to calculate the internal force and displacement of u-shaped concrete structure and pile supporting structure respectively.The results show that the U-shaped concrete ditch+single-row pile supporting structure is safe and reliable.The maximal displacement is29.03 mm,and meets that the requirement of the horizontal displacement should not be greater than 30 mm in the specification.The construction is convenient,economic rationality,which can provide reference for similar projects.