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某收费站罩棚由8个独立柱基础组成,因上水管破裂造成水浸入地基。下伏的持力层-粉质粘土胶结程度比较差,颗粒连结弱,遇水后极易软化崩解,水浸入后致使土由硬塑状态变成了软塑状态,其中一个柱基发生了严重沉陷与倾斜,影响了工程的使用。针对工程的特点及场地岩土的特性,设计了静压钢桩托换方案,通过计算与执行施工组织方案,处理达到了预期的处理效果。工程设计及施工方案方便、程序简单、有利于施工、造价低、工期短,治理经验可供类似工程借鉴。
A toll booth shed consists of eight separate column foundations that cause water to dip into the foundation due to the rupture of the upper water pipe. Underlying force - silty clay cementing degree is relatively poor, the particles are weak, easy to soften and disintegrate after water immersion, resulting in the soil from the hard plastic state into a soft plastic state, one of the plinth occurred Serious subsidence and tilt, affecting the use of the project. According to the characteristics of the project and the geotechnical characteristics of the site, a static pressure steel pile underpinning scheme was designed. By calculating and implementing the construction organization scheme, the treatment effect was achieved. Engineering design and construction program convenient, simple procedure, is conducive to construction, low cost, short duration, management experience for similar projects for reference.