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A platform for research: civil engineering, architecture and urbanism
Combined reinforcement construction method for high-fill plain soil soft foundation
The invention discloses a combined reinforcement construction method for a high-fill plain soil soft foundation. According to the method, layered rolling, dynamic compaction, dynamic compaction replacement and a PHC tubular pile method are used to reinforce the soft soil foundation in a combined manner, dynamic compaction matched tubular pile construction is used in a high-fill area with a structure at the upper portion, due to the fact that a plain soil backfilling area is arranged below the area and does not have hard substances, the construction efficiency is high by using a prefabricated tubular pile, in the area without a structure at the upper portion, due to the fact that a drainage gravel blind ditch is arranged at the lower portion, the construction risk during pipe pile construction is high, gravel dynamic compaction replacement is used, the construction risk and cost of a pile machine can be reduced, and gravel columns formed through dynamic compaction replacement construction and the drainage blind ditch at the lower portion form a three-dimensional drainage system, so that the drainage effect of the system is enhanced; and a layered backfill rolling method is used in an area close to a high-fill boundary (a retaining wall or a slope protection structure), and a separation strip is built in the middle, so that the slope protection structures on the two sides of the separation strip and dynamic compaction can be guaranteed to be constructed at the same time, the influence of dynamic compaction on structure construction is reduced, and meanwhile the construction progress is accelerated.
本发明公开了一种用于高填方素土软基组合加固施工方法，采用分层碾压、强夯、强夯置换和PHC管桩法组合加固软土地基，在上部有结构高填方区域采用强夯配套管桩施工，由于该区域下方为回填素土区，无坚硬物质，使用预制管桩施工效率高，在上部无结构区域由于下部设置排水碎石盲沟，施工管桩施工风险较高，故采用碎石强夯置换，可降低桩机施工风险与成本，且强夯置换施工形成的碎石柱与下部排水盲沟形成立体式降排水系统，增强系统降排水效果，靠近高填方边界(挡墙或护坡结构)区域采用分层回填碾压法，并在中间建立分隔带，用以保证隔离带两侧护坡结构及强夯可以同时施工，降低强夯对结构施工产生影响，同时加快施工进度。
Combined reinforcement construction method for high-fill plain soil soft foundation
The invention discloses a combined reinforcement construction method for a high-fill plain soil soft foundation. According to the method, layered rolling, dynamic compaction, dynamic compaction replacement and a PHC tubular pile method are used to reinforce the soft soil foundation in a combined manner, dynamic compaction matched tubular pile construction is used in a high-fill area with a structure at the upper portion, due to the fact that a plain soil backfilling area is arranged below the area and does not have hard substances, the construction efficiency is high by using a prefabricated tubular pile, in the area without a structure at the upper portion, due to the fact that a drainage gravel blind ditch is arranged at the lower portion, the construction risk during pipe pile construction is high, gravel dynamic compaction replacement is used, the construction risk and cost of a pile machine can be reduced, and gravel columns formed through dynamic compaction replacement construction and the drainage blind ditch at the lower portion form a three-dimensional drainage system, so that the drainage effect of the system is enhanced; and a layered backfill rolling method is used in an area close to a high-fill boundary (a retaining wall or a slope protection structure), and a separation strip is built in the middle, so that the slope protection structures on the two sides of the separation strip and dynamic compaction can be guaranteed to be constructed at the same time, the influence of dynamic compaction on structure construction is reduced, and meanwhile the construction progress is accelerated.
本发明公开了一种用于高填方素土软基组合加固施工方法，采用分层碾压、强夯、强夯置换和PHC管桩法组合加固软土地基，在上部有结构高填方区域采用强夯配套管桩施工，由于该区域下方为回填素土区，无坚硬物质，使用预制管桩施工效率高，在上部无结构区域由于下部设置排水碎石盲沟，施工管桩施工风险较高，故采用碎石强夯置换，可降低桩机施工风险与成本，且强夯置换施工形成的碎石柱与下部排水盲沟形成立体式降排水系统，增强系统降排水效果，靠近高填方边界(挡墙或护坡结构)区域采用分层回填碾压法，并在中间建立分隔带，用以保证隔离带两侧护坡结构及强夯可以同时施工，降低强夯对结构施工产生影响，同时加快施工进度。
Combined reinforcement construction method for high-fill plain soil soft foundation
一种用于高填方素土软基组合加固施工方法
LIU ZHIFENG (author) / SONG SHUTONG (author) / JI ZHIWEI (author) / JIN ZHITENG (author) / CHENG WEI (author) / CHEN CHANGCHUAN (author) / ZHANG FENG (author) / RAN SHENGDONG (author) / MA FENGCHUAN (author) / XIONG JIASHENG (author)
2021-11-26
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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