Study On Load-bearing Characteristics Of Static Pressure Pile In Soft Soil Of Handan City

With the rapid development of our country construction enterprise,high-rise and super high-rise buildings is increasing,it puts strict requirements on foundation treatment.The static pressure pile is an important process in the process of foundation treatment,compared with other pile foundation construction,it has many advantages,and also has its disadvantages.In pile pressure into the process,through the pressure gauge can understand each pile,the stress change with depth,pressure of pile at any depth can be obtained into the load.But how to choose the force that press a pile according to soil conditions? It’s still a hot research topic.Due to this problem is very complicated,involving many aspects,though there are many scholars adopt different methods are discussed in this paper,but still has not obtained a satisfactory result.Based on the Handan region under the condition of soft soil foundation a static pressure tube pile project,through a series of static load test and monitoring data,and the mechanism of static pressure pile pressure analysis,load-bearing characteristics and influencing factors of static pressure pile are studied,finding a suitable method for calculating the bearing capacity of single pile and the end pressure relationship with the vertical ultimate bearing capacity of single pile.On this basis,select the appropriate construction technology;This paper also uses Flac3 D numerical simulation for single pile bearing capacity,the static load test and simulation,it is concluded that in every level of the loading process,pile side friction curve and settlement displacement nephogram of every soil layer;Finally with the static load test of simulation results and the actual experimental results,this paper compares and analyzes mutual authentication,to prove this project with static load test feasibility,it is concluded that the vertical ultimate bearing capacity of single pile.On the contrary,the simulation results can also be as a reference when single pile bearing capacity design.