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荆岳长江公路大桥南塔位于破碎带与完整岩体相间分布的倾斜陡立岩体中,地质条件在国内外均属罕见,造成南塔大直径、大长度基桩在成桩中存在塌孔、偏孔及进度缓慢等严重问题。针对南塔基桩成桩施工存在的问题,进行了有关工艺和技术研究。取得了4项成果,解决了南塔基桩成桩存在的所有问题,并填补了国内外此类地质条件下基桩成桩的技术空白。
The south tower of the Jing-Yue Yangtze River Highway Bridge is located in the steeply inclined rock body with the broken rock mass and the complete rock mass distributed among them. The geological conditions are rare at home and abroad, resulting in the collapse of holes in the pile of large diameter and long- Partial hole and slow progress and other serious problems. In view of the problems existing in pile construction of Nantaji pile, the relevant technology and technology are studied. Four achievements have been made to solve all the problems existing in the compaction of the Nantaji pile and to fill in the technical gaps in pile-piling under such geological conditions both at home and abroad.