轴线线形对自重作用下主塔弯矩的影响  

Analysis on Influence of Different Axial Curves on Bending Moment of Tower under Self-respect Function

作　　者：官快 徐德志 GUAN Kuai;XU Dezhi(Guangdong Communication Planning & Design Institute Group Co., Ltd., Guangzhou 510507)

机构地区：[1]广东省交通规划设计研究院集团股份有限公司,广州510507

出　　处：《广东公路交通》2022年第1期43-47,共5页Guangdong Highway Communications

摘　　要：为明确主塔轴线曲线类型对其自重作用下塔身弯矩的影响,给主塔设计提供参考,进行了几种主塔轴线幂函数曲线类型对主塔自重作用下受力影响分析。基于经典力学原理推导了四种不同幂函数主塔轴线曲线在自重作用下的弯矩计算公式,依托典型斜拉桥工程案例比较了四种曲线线形主塔受力情况。结果表明,随着曲线函数幂次增加,主塔受力更趋不利。所得结论可在设计阶段为主塔选择适当的轴线曲线类型提供参考。The performance under stress of a few different power function axial curve in tower under the self-respect function has been studied for the purpose of ascertaining the influence of different power function axial curves on bending moment in tower under the self-respect function,and obtaining a reference for the following tower design.Four different curve formulas using power function in tower under the self-respect function have been obtained based on deducing the principle of classical mechanics.Meanwhile the performance under stress of tower with four different curve formulas using power function has been compared depend on typical cable-stayed bridge case.The results have shown that the stress condition turns worse along with the increase of power in the curvilinear function.The conclusion could be used as a reference for choosing the appropriate axial curves of tower in design phase.

关 键 词：主塔 曲线类型 幂函数 受力状态 

分 类 号：U441.2[建筑科学—桥梁与隧道工程]