中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 2020, Vol. 39 ›› Issue (05): 58-64.DOI: 10.3969/j.issn.1674-0696.2020.05.09

• 桥梁与隧道工程 • 上一篇    下一篇

多因素作用下风荷载简化对高墩垂直度影响分析

王军1,漆久亮1,张刚领2,张麒2,高凯2   

  1. (1. 中国建筑第四工程局有限公司珠海分公司,广东 珠海 519000;2. 重庆大学 土木工程学院,重庆 400045)
  • 收稿日期:2018-11-16 修回日期:2019-04-16 出版日期:2020-05-26 发布日期:2020-06-18
  • 作者简介:王军(1985—),男,贵州遵义人,工程师,硕士,主要从事建筑工程技术管理、桥梁施工研究方面的研究。E-mail:270900742@qq.com。 通信作者:高凯(1988—),男,四川南充人,工程师,博士研究生,主要从事桥梁结构检测、加固、健康监测方面的研究。E-mail:gk1988@cqu.edu.cn。
  • 基金资助:
    中建四局科技课题(CSCEC4B-2018-KT-24)

Effect of Wind Load Simplification on the Vertical Degree of High Pier under the Action of Multiple Factors

WANG Jun1, QI Jiuliang1, ZHANG Gangling2, ZHANG Qi2, GAO Kai2   

  1. (1. China Construction Fourth Engineering Bureau Zhuhai Branch, Zhuhai 519000, Guangzhou, China; 2. School of Civil Engineering, Chongqing University, Chongqing 400045, China)
  • Received:2018-11-16 Revised:2019-04-16 Online:2020-05-26 Published:2020-06-18

摘要: 高墩在施工期间受到几何初始缺陷、施工偏载以及风荷载等作用,桥墩可能产生偏位,从而对高墩的承载力带来不利影响。通过现行规范计算模拟得到梯形风荷载简化模型,在考虑几何非线性的条件下,基于弹性稳定平衡微分方程,推导出高墩墩顶的偏位计算公式。在此基础上,为便于现场施工应用,选取5个现有高墩为研究对象,在弹性稳定理论条件下对通过梯形风荷载简化模型所得公式进行简化,详细分析高墩在考虑几何非线性时多因素耦合作用对高墩垂直度的影响。结果表明:梯形风荷载简化模型计算结果与实际风荷载有限元模拟结果较为吻合,更符合实际的风荷载特点,为高墩施工中考虑风荷载影响及墩顶侧移控制提供了方法支撑和切实可行的技术手段。

关键词: 桥梁工程, 桥梁高墩, 几何非线性, 几何初始缺陷, 施工偏载, 梯形风荷载简化模型

Abstract: The high pier is affected by geometrical initial defects, partial load of construction and wind load during the construction period, and the piers may be misaligned. Therefore, the bearing capacity of high pier is adversely affected. The simplified model of trapezoidal wind load was obtained through the calculation and simulation of the current code. The misalignment calculation formula of the top of high piers was derived based on the elastic stable equilibrium differential equation, with the consideration of geometrical nonlinearity. On this basis, in order to facilitate the application of site construction, five existing high piers were selected as the objects of study. Under the condition of elastic stability theory, the formula of the simplified model of trapezoidal wind load was simplified, and the influence of multi-factor coupling on the vertical degree of the high pier was analyzed in detail, with the consideration of geometrical nonlinearity. The results show that the results of the simplified model of trapezoidal wind load agree well with the results of finite element simulation of actual wind load, which is more in line with the characteristics of actual wind load. It provides method support and practical technical means for considering the influence of wind load and the control of pier top lateral displacement in the construction of high pier.

Key words: bridge engineering, high bridge pier, geometrical nonlinearity, geometrical initial defect, partial load of construction, simplified model of trapezoidal wind load

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