高强预应力混凝土环形构件正截面受力性能分析

等径高强预应力钢筋砼电杆在高压输电线路工程中的应用日益增加,通过对其正截面承载力与变形性能的全过程分析,并结合有关试验结果,研究了截面尺寸、有效预应力、砼强度等级等因素的影响。从提高构件的承载力及工程应用角度分别提出了增加砼强度、构件壁厚及增加横向钢筋的设计建议。

Ultimate capacity and deflect analysis of high-strength prestressed concrete electricity poles

High strength prestressed concrete electricity poles with large diameter are being widely used in high voltage transmitted electricity circuitry projects. Asked for the need of practice, the circularity members' ultimate capacity and deflect are studied by means of full process analysis method. The members' property governed by the parameters of section dimension, effective prestressed force, concrete strength and so on are discussed. The conclusion is in agreed with test results. Finally, Some suggestion, such as increasing the concrete strength, decreasing the longitudinal reinforcement ratio and increasing the stirrup ratio and so on, is brought forward to advance the members' flexural ductility.