Experimental Study Of Bamboo Network And Heaping And Drainage Tube Wells Reinforcing Ultra-soft Foundation

Relying on highway foundation treatment works reclamation sites in a wide range ofcoastal economic zone of Shantou. Selectting a typical area to study Bamboo Network andHeaping and Drainage Tube Wells Reinforcing Ultra-Soft Foundation. At the same, the finiteelement model is established. Using the finite element method for numerical analysis to supersoft soil consolidation. Including reinforcement effect of the bamboo network to the soft soilfoundation,the foundation deformation in heaping and pore water pressure changing processwith the time. Getting the following conclusion:(1)In the Bamboo Network and Heaping and Drainage Tube Wells Reinforcing Ultra-SoftFoundation. Adopting the0.5m spacing bamboo network and1.0m thick sand to process thesurface layer of reclaimed super soft soil for forming construction working face.The resultsshow that Bamboo network made the surface bearing capacity have improvedsignificantly.After Bamboo network laying for three months,the surface bearing capacity isaverage32.6kPa. Bearing capacity is323%higher than laying early and695%higher thanPre-laying. The bearing capacity satisfies the requirement of the follow-up construction.(2)In the Bamboo Network and Heaping and Drainage. Tube Wells Reinforcing Drainagesystem uses vertical drainage plate and the vertical Wells. Stack uses four stack solution. Eachlevel filling time is for10d. Four loads are34kPa,52kPa,115kPa and115kPa. The total timeis for260d. By the surface settlement,the lateral deformation and the pore water pressure withthe change of time,the tests get a conclusion.After each level stack stability,the consolidationdegree of soft soil foundation were above80%. Most of the excess pore water pressuredissipated and stabled to a certain value. When Processing was completed surface subsidencerate less than or equal to1mm/d.The Post-construction settlement obviously decreaseed.Therefore, the effect of stack preloading drainage consolidation is good.(3) Based on the bamboo network stack tube well drainage reinforcing super soft soilfoundation experiment model.,setting up the bamboo network stack tube well drainagereinforcing soft soil foundation finite element numerical analysis model. The results of numerical analysis shows that consolidation degree is up to97.7%after4levels load stabilityand the surface subsidence rate is less than or equal to1mm/d. Analysis results show that thedesign scheme is rational.