寒区系杆拱桥桥面横向温度模式及静力性能
Transverse temperature mode and static performance of the deck of tied arch bridges in cold regions
刘兴国 1梁建军 2徐培彬 1黄巍1
作者信息
- 1. 哈尔滨学院 土木建筑工程学院,黑龙江 哈尔滨 150086
- 2. 黑龙江省建设投资集团有限公司,黑龙江 哈尔滨 150046
- 折叠
摘要
为研究寒区系杆拱桥桥面横向温度模式及结构静力性能,基于寒区气象资料和现场温度实测数据,研究系杆拱桥桥面的纵向和横向温度,提出桥面 100 a横向温度模式.利用Midas软件建立桥梁温度场力学模型,分析横向升温载荷对桥梁静力性能的影响.研究表明:系杆拱桥桥面的横向温差呈非线性分布,距桥面中线越远温差越大.系杆拱桥桥面的横向温度以桥面中线为对称轴,在半幅桥面内呈幂指数对称分布.在桥面 100 a横向温度模式下,各控制断面的应力和位移均大于我国铁路规范横向温度模式下的应力和位移,研究结果为工程应用提供理论指导.
Abstract
To investigate the transverse temperature patterns and the static structural behavior of tied arch bridge decks in cold regions,this study analyzed transverse temperature gradients using actual temperature measurements and nearly 50 years of meteorological data.Midas software was employed to develop a mechanical model of the bridge's temperature field,deriving temperature effects under transverse temperature gradients and comparing them with the code for design on reinforced and prestressed concrete structure of railway bridge and culvert in China.The findings indicate that the transverse temperature differences across the tied arch bridge decks exhibit a nonlinear distribution,with greater differences occurring further from the centerline.The temperature gradient pattern is symmetrical about the centerline of the bridge deck,exhibiting a power-exponential distribution within half the range.The 100-year transverse temperature model for the bridge deck in the study area was established,revealing that the stress and displacement of each control section exceed those predicted by the code for design on reinforced and prestressed concrete structure of railway bridge and culvert in China.The research results provide a reference for engineering applications.
关键词
寒区系杆拱桥/桥面铺装/横向温度模式/温度载荷/静力分析Key words
tied-arch bridge in cold region/bridge deck pavement/horizontal temperature mode/temperature load/static analysis引用本文复制引用
基金项目
黑龙江省重点研发计划指导类项目(GZ20220124)
出版年
2024
国家科技期刊平台
NSTL
万方数据