METHOD FOR ERECTION OF BERTHING STRUCTURES AT WEAK SOILS

摘要

A method for erection of berthing structures on weak soils by which mounting base of the berthing structure is formed of multisection reinforced-concrete shells piles that are placed in rows in cross and long directions thereof and are deepened to the layer of compact grounds with increasing number of sections. After shell pile exceeds design height one arranges in its lower part a cement joggle. A top of the berthing structure is fixed to the base of the berthing structure with formation of a rear wall and underberthing slope. To decrease terms and to decrease material consumption at building, multisection shells piles are deepened to the bottom of water area up to the layer of compact grounds by washing out earth masses from inner cavity of each multisection shell pile through the hollow base of the lower section with water jet. The jet is formed by means of metal pipe with nozzle at the end placed to the inner cavity through which outside water is delivered under pressure with pump. The own weight of the shell pile and artificial mechanical load is used as additional vertical pressure.