Static Pressure Tube Pile Bearing Capacity Of Single Pile And Its Relationship With The Force Thatpress A Pile In Parts Of Shenyang

The technology of static pressure pipe pile has the advantages of high bearing capacity,low cost,little pollution and no vibration,and has been widely used in engineering field in China.As the most important parameter of pile foundation-vertical bearing capacity of single pile,the accuracy of its calculation method is very important.At present,there are load test method and experience method,but the test method is complicated and time consuming.Therefore,it is more important to find a simpler and more suitable calculation method in theory.It is also practical for engineering practice.Guiding significance.Based on the case of a prestressed concrete static pipe pile project in shenbei new district,shenyang,this paper makes a calculation and analysis.First,the engineering data of static pressure pipe pile in Shenbei New Area are collected and analyzed by using gray relational analysis method.Force and its influencing factors Plasticity index,water content of pile-side soil,liquid index,porosity ratio,internal friction angle,cohesion,heavy,static pressure pipe pile pile construction end pressure,pile end bearing layer N,the aspect ratio L / D of the pile,the depth of the pile into the depth of the bearing layer,the length of the overburden in the thickness of the relationship between the length of the relationship between the use of the size of the impact of the impact of factors,according to the results and single pile ultimate bearing The most closely related factors are the number of hammering times and the final pressure of construction.The vertical ultimate bearing capacity of the single pile of the static pressure pile under the geological conditions of Shenbei New District in Shenyang is dominated by the end resistance and the lateral friction.The size of the ultimate bearing capacity and the depth of the pile end into the bearing layer are smaller.Secondly,this paper selects a static pressure pipe pile in Shenbei New Area,and uses the finite element analysis software Midas / GTS to calculate the numerical calculation.Then,the vertical ultimate bearing capacity of the single pile of the prestressed concrete The vertical bearing capacity of the single pile of the static pile is calculated and compared with the experimental results.The simulation results are compared with the actual values obtained by the finite element analysis.The results show that the accuracy and accuracy of the test results are proved,The results show that the calculation precision of the vertical bearing capacity of single pile is verified by the geological conditions in the northern region of god.It is shown that the finite element software The Feasibility of Numerical Calculation of Ultimate Bearing Capacity of Single Pile of Static Pressure.Finally,the reliability of the calculation of ultimate bearing capacity of single pile is calculated and analyzed by using mathematical method.The influence factors of safety factor K,load ratio and load combination on reliability index are analyzed,and it is proved that the limit load of single pile is determined by static load test The reliability of the force.