弯曲预应力混凝土桥梁抗倾覆性能参数研究  

ASSOCIATED PARAMETER RESEARCH OF OVERTURNING RESISTANCE STABILITY FOR THE CURVED CONCRETE BRIDGE

作　　者：李晓辉 Li Xiao-hui

机构地区：[1]北京国道通公路设计研究院股份有限公司,北京100161

出　　处：《建筑技术开发》2025年第4期126-129,共4页Building Technology Development

摘　　要：为具体掌握弯曲桥梁抗倾覆性能主要影响因素及相关指标特征,通过有限元程序Midas Civil建立主梁抗倾覆空间有限元标准模型,详细研究了平曲线半径、支座类型及间距、车辆偏载及超载、预应力效应等参数对梁桥抗倾覆稳定性能影响,以梁底最小支座竖向力与抗倾覆安全系数为主要特征指标,得出了相关参数对桥梁抗倾覆性能的具体影响程度及变化规律,可为相关工程提供参考。In order to specifically understand the main influencing factors and related index characteristics of the anti overturning performance of curved bridge beams,a finite element standard model of the main beam anti overturning space was established through the finite element program Midas Civil.The influence of parameters such as the radius of the horizontal curve,the type and spacing of the supports,vehicle deflection and overload,and pre stress effect on the anti overturning stability performance of the beam bridge was studied in detail.The minimum vertical force of the supports at the bottom of the beam and the anti overturning safety factor were taken as the main characteristic indicators,and the specific degree and variation law of the relevant parameters on the anti overturning performance of the bridge were obtained,which can provide reference for related engineering.

关 键 词：弯曲 连续梁桥 抗倾覆 有限元模型 稳定系数 预应力 

分 类 号：TU443.35[建筑科学—岩土工程]