Analysis Of Mechanical Behavior Of Pile Anchorage Foundation Of Suspension Bridge And Application Of BIM In Anchorage Construction

The anchorage is an important part of the suspension bridge.At present,the volume of gravity anchorage foundation used for suspension bridges is usually very large,and the cost is also very expensive.A light-weight anchorage foundation--pile group anchorage foundation is applied to the anchorage of one suspension bridge.This type of foundation can greatly reduce the amount of engineering and reduce the project cost.When the anchorage is subjected to huge horizontal load,the internal force distribution of the pile top of each pile in the pile group foundation is complex,and there are many factors affecting the internal force distribution and the ultimate bearing capacity of the pile anchorage foundation.BIM technology has changed the traditional design method and can create a construction model containing complete construction information to ensure the safety and feasibility of the construction.Therefore,BIM technology can be introduced into the construction process of the pile groups anchorage foundation.In response to the above issues,the main work of this paper is as follows:(1)Based on the m method,the power series solution of the pile group foundation is derived.The internal force distribution of the pile top and the analytical solution of the internal force of the pile body are calculated using MATLAB.The reference standard for the normal use of the group pile anchorage foundation are presented.(2)Based on the ANSYS finite element software to establish the integral model of pile group anchorage foundation and surrounding soil,calculate and analyze the displacement and internal force of each pile under the action of anchorage weight and self weight and designed main cable force,and calculate the foundation The ultimate bearing capacity and the reference standard of the normal use are calculated.The effects of soil parameters,pile diameter,pile length,pile cross-section form,pile layout,etc.on the displacement and internal forces of piles in pile group anchorage foundation were discussed,as well as the influence on their ultimate bearing capacity.(3)The BIM technology is introduced into the construction process of anchorage,and the simulation of the construction process,the collision detection and the construction quantity statistics in the construction process are studied.The application of BIM technology in the bridge project is preliminarily explored.The calculation results show that: The pile group pile anchorage foundation from the front row pile to the back row pile,the pile top internal force of each pile increases gradually,and its ultimate bearing capacity reaches 2.79 times the design main cable load,and has high safety factor.The change of soil elastic modulus has great influence on displacement,internal force and ultimate bearing capacity of each pile.The change of soil cohesion has little effect on the displacement and pile top of each pile,but it has a great influence on the ultimate bearing capacity.When the solid pile is used,the overall horizontal displacement of the anchorage is reduced and the ultimate bearing capacity decreases with the increase of pile diameter.When the hollow pile is used,its ultimate bearing capacity is greatly reduced.The displacement,internal force and ultimate bearing capacity of pile are not obviously affected by the change of pile length in sandstone foundation.With the increase of the length-width ratio of rectangular pile,the displacement of pile top is decreased,the internal force of pile tip increases,and the ultimate bearing capacity decreases.The use of inclined pile foundation can greatly improve the stress of pile foundation.With the increase of the inclination angle of the inclined pile,the displacement of the pile top of each pile,the shear force along the bridge at the top of the pile,and the bending moment around the bridge top gradually decrease,and the axial force of the pile top of the front pile gradually decreases,and the pile top axle force of the back row pile gradually increases.