APPLICATION STUDY ON LONG-SHORT PILE COMBINED WITH REINFORCEMENT IN PASSIVE ZONE OF DEEP SOFT SOIL EXCAVATION
The excavation support in deep soft soil area is subjected to low excavation depth even with long piles,which does not meet the code requirements.We analyze the mechanism on long-short pile combined with reinforce-ment in passive zone.Taking Chinese Sports Science and Technology Sports Center in Wuhan as the case,we intro-duced the long-short piles combined with reinforcement in passive zone support structure in detail. And the calcula-tion and analysis of the deformation and stability of the excavation are carried out by using elastic resistance method. The results show that the short pile combined with reinforcement in passive zone effectively controls the displace-ment of excavation,and long piles control the overall stability of excavation. The monitoring data of excavation show that the use of long-short pile combined with reinforcement in passive zone is successful. At last,the design flow of long-short pile combined with reinforcement in passive zone of excavation in deep soft soil area is proposed with a view to provide reference for similar projects.
excavation supportlong-short pilereinforcement in passive zonedeep soft soil area