岸坡组合式钢板桩支护平台施工关键技术研究

Research on Key Technology Research of Construction of Assembled Steel Sheet Pile Supporting Platform Applied to Bank Slopes

某市政高架桥跨越城市干渠,干渠中原地面起伏较大、周边场地狭小,且不得影响正常行洪,这给高架桥施工带来较大难度。为解决桥梁基础、下构、上构现场施工大型机械站位难题,特提出钢板桩+内支撑支护体系,以此保证大型机械作业时边坡稳定。利用理正深基坑软件对这2种支护形式进行建模分析,计算结果表明这2种支护体系安全可靠。

A municipal viaduct crosses the city trunk canal,where the existing ground fluctuates greatly.Moreover,due to narrow construction site and requirements for no affecting the normal flood discharge,the viaduct construction has become difficult.To address the problem of large instrument positioning during constructing the foundation,substructure,and superstructure of the viaduct,this paper presents a kind of assembled steel sheet pile supporting systems:steel sheet pile combined internal supporting.This can ensures the stability of the slope during mechanical operation.This paper utilizes Lizheng Software to analysis the space mechanical model which is set up based on this supporting systems above.At last,the computed result shows that the scheme is safe and reliable.