Experimental Study On The New Method Of Reinforcing Legs Of Transmission Towers And Its Reinforcing Effect

In the existing transmission towers,because of the hurt by the external environment or man-made,the bearing capacity of some transmission towers can’t meet the safety requirements,and it is necessary to reinforce such towers.Usually,the cause of failure of the tower is the buckling of the tower legs.Therefore,in the reinforcement of the transmission tower,strengthening the tower legs is an important way to increase the capacity of the transmission tower.In the current reinforcement methods of tower legs,the main method is the component parallel method by means of filler plates connecting the tower legs and the reinforcement member.This reinforcement method requires turning holes in the tower legs,so the actual construction is difficult and it will weaken the tower legs,it may cause damage during construction.According to the disadvantages of the above methods,this paper proposes two kinds of methods to reinforce the tower legs and study them.This article tests first method,the main research is on the reinforcement effect,including the bearing capacity of the components and the transfer force efficiency of the fixture.On the basis of the test,the applicability of the finite element analysis was verified by comparing the results of finite element and experiment.Finite element analysis studies the reinforcement effects of rib thickness,rib length,rib position,sub-angle steel size,bolt pre-tightening force and the number of fixtures on the first method,and propose design suggestions for the first method.The same method was used to conduct finite element modeling of the second reinforcement method,study the reinforcement effect and perform parametric analysis on it,and propose design suggestions for the second plan.The experimental and finite element analysis results show that these two reinforcement methods can achieve better reinforcement results.