首页|结构参数对梁拱协作机理的影响

结构参数对梁拱协作机理的影响

扫码查看
原文链接
  • 万方数据
  • 维普
以西宁祥瑞街大桥为工程背景,该桥为单拱肋下承式连续梁拱组合桥,以力学分析和有限元建模为主线,围绕梁拱协作机理和结构参数两方面进行研究.根据拱肋分担荷载比、拱梁弯矩比、拱梁变形比的表达式,结合工程背景,绘制各参数(吊杆拱肋等代弯矩刚度比、梁拱截面抗弯刚度比、矢跨比、轴向变形放大系数、边中跨比、边中跨抗弯刚度比)与拱肋分担荷载比、拱梁弯矩比、拱梁变形比的影响曲线,分析各参数对拱肋分担荷载比、拱梁弯矩比、拱梁变形比的影响.为设计人员在方案设计初期,拟定较为合理的结构参数提供了力学依据.
Influence of Structural Parameters on the Beam-arch Cooperation Mechanism
Taking Xiangrui Street Bridge in Xining as the engineering background,it is a single-arch through continuous beam-arch combination bridge,combining with mechanical analysis and finite element modeling as the main line.The following researches were carried out on the beam-arch cooperation mechanism and structural parameters.According to the expressions of load sharing ratio of arch,bending moment ratio of arch-beam,and deformation ratio of arch-beam,combined with engineering background,the author draws the influence curves of each parameter(suspender-arch ratio of equivalent flexural rigidity,ratio of beam-arch sectional flexural rigidity,rise-span ratio,influence coefficient of axial deformation,side-to main-span ratio,side-to main-span flexural rigidity ratio)and load sharing ratio of arch,bending moment ratio of arch-beam,deformation ratio of arch-beam were drawn.The influence of structural parameters on the load sharing ratio of arch,bending moment ratio of arch-beam,and deformation ratio of arch-beam was also analyzed.It provides a mechanical basis for designers to formulate reasonable structural parameters in the initial stage of scheme design.

single-arch through continuous beam-arch combination bridgebeam-arch cooperation mechanismload sharing ratio of archbending moment ratio of arch-beamdeformation ratio of arch-beamstructural parameters

陈超、段燕娥、王方旭

展开 >

甘肃建筑职业技术学院,兰州 730050

兰州交通大学土木工程学院,兰州 730070

单拱肋下承式连续梁拱组合桥 梁拱协作机理 拱肋分担荷载比 拱梁弯矩比 拱梁变形比 结构参数

2024

科技和产业
中国技术经济学会

科技和产业

影响因子：0.361
ISSN：1671-1807
年,卷(期)：2024.24(14)
  • 9