沿海淤泥及花岗岩地质桩基施工技术研究

CONSTRUCTION TECHNOLOGY OF MARINE SILT AND GRANITE GEOLOGICAL PILE FOUNDATION

因邻海及人工活动影响,场地内地质条件复杂,钻孔灌注桩施工存在众多施工技术难点,主要表现为地下旧基础等障碍物不明、淤泥质场地不利于大型机械操作、砂层稳定性差易塌孔、地下大小孤石众多、花岗岩入岩难度大等。施工前期通过对施工技术难点逐一提出针对性技术应对措施,确保了在沿海复杂地质条件下桩基施工质量。

Due to the influence of the sea and artificial activities,the geological conditions in the site are complex,there are many technical difficulties in the construction of bored pile,which are mainly reflected in the unknown obstacles such as underground old foundation,the silt site is not conducive to large-scale mechanical operation,the sand stability is poor and easy to collapse the hole,the large size of underground isolated stones,granite into the rock difficulty.In the early stage of construction,specific technical countermeasures are put forward to the technical difficulties one by one to ensure the construction quality of pile foundation under the complex geological conditions in the coastal area.