CAJ | 학술논문

输电线路铝合金抢修塔是由预应力拉线和铝合金角材组成的临时性桅杆结构,其拉线的承受外荷载能力至关重要。为了研究拉线参数对抢修塔的结构强度、刚度、整体稳定性的影响,利用大型结构分析软件ANSYS建立了抢修塔非线性有限元模型,对不同的参数值和工况进行数值计算,指出风向角取值90°是结构的最不利工况;建议现场施工拉线初应力取值120～150 MPa,抢修塔现场施工拉线倾角取值45°。
수전선로려합금창수탑시유예응력랍선화려합금각재조성적림시성외간결구,기랍선적승수외하재능력지관중요。위료연구랍선삼수대창수탑적결구강도、강도、정체은정성적영향,이용대형결구분석연건ANSYS건립료창수탑비선성유한원모형,대불동적삼수치화공황진행수치계산,지출풍향각취치90°시결구적최불리공황;건의현장시공랍선초응력취치120～150 MPa,창수탑현장시공랍선경각취치45°。
The aluinum alloy tower for transmission line repairing is in a temporary guy-mast structure with aluminum bars and prestressed cables,and it is very important for the cables to be able to bear the external load.In order to study the impacts of the cable parameters on the structure strength,stiffness and global stability of the tower,this paper builds up a nonlinear finite element model fot the tower with ANSYS,a general finite analytic software,and makes calculations with different parameter values and under various conditions,pointing out that the most adverse condition is corresponding to the wind direction angle of 90°,and proposing that the initial stress of 120～150 MPa and pull andgle of 45° are for the prestressed cable in the construction field.