采用井点钢护筒法综合处理钻孔桩断桩的探索

通过工程实例阐述了采用井点降水与钢护筒防护相结合处理钻孔桩断桩的方法,这种断桩处理方案大胆采用钢护筒防护和井点降低地下水位,结合人工下井凿除浮浆、清除泥污,且随灌注混凝土随提拔钢护筒,使桩混凝土仍与土壁接触,确保桩基混凝土与土壁的力学状态不变。其施工难度较大,具有一定的创新性,是一种较实用的工程断桩技术处理方案。

Discussion of Bored Piles Break Treatment Using Well Point and Steel Pile Casting Method

The method of bored piles break treatment using well point to fall underground water level and steel pile casting is introduced through a practical project. The floating slurry and muddiness are removed by manual work, the steel drum is lifted while casting concrete, the piles concrete always contact the soil wall, and the mechanics state between concrete and soil is kept unchanged. The difficulty of the method is steel drum lifting using assembly pulley and jack.