Experimental Study Of Force And Deformation Characteristics For The Single Pile Composite Foundation With Different Angle

For the composite foundation,the lateral loading or side-discharging will cause the composite foundation getting a lateral force,then it will cause a lateral displacement.When a lateral displacement come into being in the composite foundation,the pile generate tilt.For this composite foundation,the behavior of deformation under load is different from the normal composite foundation,with the increase of angle of inclination,its compressive capacity will bring down,but now both at home and abroad,the research for the tilt composite foundation is few relate to. The principal research technique include theoretical analysis?numerical calculation?simulation experiment?field experiment,and get a lot of research result,this text carry out a simulation experiment for the research of the behavior of deformation of different tilt composite foundation under load.In the experiment,take several dial indicator place on the pile block?soil around pile and the upper of the foundation,then it can get the setting change.The two sides of the pile will be paste of strain gage and then it can get the bending moment and resistance.So it reveal the behavior of deformation of single pile composite foundation under load.With theoretical analysis,it get out of some main results:(1) Under the same load, with the increase of Angle the settlement of single pile composite foundation is also increasing which prove that the increasing of tilt Angle produced adverse effect for the bearing capacity of single pile composite foundation.(2) The tilt of the single pile composite foundation are generating lateral movement, and on top of the pile lateral movement is bigger than that at the bottom of the pile.the bigger angle of the single pile produce more lateral displacement.(3) The different Angle of single pile composite foundation,the bending moment is not the same, with the increase of the Angle the bending is also increasing.(4) The friction is changing with the increase of the angle of the single pile.As the angle increased,the sigle pile get friction at different directions. It prove that the angle of inclination have a big influence on fricction.(5) As the increase of the angle of inclination,the lateral earth resistance is increasing.As the angle increased,the sigle pile get lateral earth resistance at different directions.Then it will cause the compiex bending moment change.It prove that the angle of inclination causeadverse effect.