狭窄河道灌注桩结合钢板桩围堰布置与施工

摘要

针对双排钢板桩围堰的使用受河道地形限制的问题，结合南水北调东线杨官屯河闸的施工，对狭窄河道复杂地质条件下小跨度双排钢板桩围堰进行了详细研究，探索出了一套行之有效的灌注桩结合钢板桩围堰的施工技术，用于工程实践，取得了良好效果。运用三维有限元法对钢板桩围堰进行了稳定及变形分析，表明三维有限元可以较好地模拟钢板桩围堰的实际工作状态，可用于该结构的设计与施工，同时也验证了施工措施的可靠性。%For the double row of steel sheet pile cofferdam used by river terrain restrictions,based on the Yangguantun sluice as background,the small span double row steel sheet pile cofferdam under complicated geological conditions in narrow river were studied in detail. This article explored a set of effective construction technology of filling pile combined with steel sheet pile cofferdam and used in engineering practice. And the use of three-dimensional finite element method of steel sheet pile cofferdam stress deformation and stability analysis,show that the three-dimensional fi-nite element can be used to reflect the deformation and stability of the steel sheet pile cofferdam and can be used in the structure design and con-struction,as well as the reliability of the construction measures.