Integrated Construction Technology and Application of Pile Foundation and Caisson Structure for Cofferdams
In water conservancy project construction,cofferdam construction often encounters situations with limited space and frequent water level fluctuations,where traditional gravity-type cofferdams and double-row pile cofferdams are difficult to apply.In the Huaihe River Channel Linhuaigang Double-track Ship Lock Project,a cofferdam's lower part,designed for anti-seepage and load-bearing,was constructed using a combination of double-row cast-in-place piles,rotary jet piles,and an underground continuous wall.This structure was integrated with an upper reinforced concrete caisson structure.By effectively combining conventional foundation anti-seepage methods with the caisson structure,an integrated watertight cofferdam was formed.It successfully addressed the challenges of cofferdam construction within a limited space and under conditions of significant and frequent water level fluctuations.This integrated watertight cofferdam demonstrates significant anti-seepage effectiveness,high structural stability,a short construction period,and cost-effectiveness.It holds valuable lessons for cofferdam construction in complex operating environments within water engineering projects.
pile foundation and caisson structureintegrated watertight cofferdamLinhuaigang double-track ship lock
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