胸墙式双排桩结构在扩建船闸工程中的应用

针对临近原一线船闸建筑物的扩建船闸挡墙高、变形要求严格、施工条件复杂、施工期兼做船闸围堰等技术难点,经比选提出胸墙式双排桩结构形式,采用有限元法分析了其受力特性。监测表明,相对传统结构形式,该结构桩身受力和变形均较小,对临近现有建筑物的安全有保障,在类似边界条件的工程中具有推广价值。

Application of double row piles structure with chest wall in the expansion of ship lock project

Aiming at the technical difficulties such as high retaining wall of expanded lock near the original first-line lock building,strict deformation requirements,complex construction conditions,and building lock cofferdam during the construction period,through comparison and selection,the form of double row piles structure with chest wall was proposed,and its mechanical characteristics were analyzed by finite element method.The monitoring results show that compared with the traditional structure,the stress and deformation of the pile body of the structure are relatively small,which can guarantee the safety of the existing buildings nearby,and has the popularization value in projects with similar boundary conditions.