[1]孙宗磊,向律楷,刘何亮.350 km/h高速铁路钢-混混合连续刚构桥设计研究[J].高速铁路技术,2021,12(06):70-77.[doi:10.12098/j.issn.1674-8247.2021.06.014]
　SUN Zonglei,XIANG Lvkai,LIU Heliang.A Study on Design of Steel-concrete Hybrid Continuous Rigid Frame Bridge for 350 km/h High-speed Railways[J].HIGH SPEED RAILWAY TECHNOLOGY,2021,12(06):70-77.[doi:10.12098/j.issn.1674-8247.2021.06.014]
点击复制

350 km/h高速铁路钢-混混合连续刚构桥设计研究()
分享到：

《高速铁路技术》[ISSN:1674-8247/CN:51-1730/U]

卷:
12卷
期数:
2021年06期
页码:
70-77
栏目:
出版日期:
2021-12-28

文章信息/Info

Title:
A Study on Design of Steel-concrete Hybrid Continuous Rigid Frame Bridge for 350 km/h High-speed Railways
文章编号:
1674—8247(2021)06—0070-08
作者:
孙宗磊;  向律楷;  刘何亮
1. 中国铁路经济规划研究院有限公司, 北京 100845;
2. 中国国家铁路集团有限公司, 北京 100845;
3. 中铁二院工程集团有限责任公司, 成都 610031
Author(s):
SUN Zonglei;  XIANG Lvkai;  LIU Heliang
1. China Railway Economic and Planing Research Institute, Beijing 100845, China;
2. China Railway, Beijing 100845, China;
3. China Railway Eryuan Engineering Group Co., Ltd., Chengdu 610031, China
关键词:
混合连续刚构|高速铁路|残余徐变|双薄壁墩|正交异性组合板
Keywords:
hybrid continuous rigid frame|high-speed railway|residual creep|double thin-walled pier|orthotropic composite plate
分类号:
U448.36
DOI:
10.12098/j.issn.1674-8247.2021.06.014
文献标志码:
A
摘要:
对于跨度200 m左右的高速铁路混凝土连续刚构桥梁，梁体残余徐变值较大，难以满足高速铁路的要求。为解决此问题，可采用钢-混混合连续刚构。本文以广湛铁路西江特大桥为例，针对350 km/h高速铁路钢-混混合连续刚构桥梁开展设计研究。首先比选了钢-混混合连续刚构、矮塔斜拉桥及连续刚构拱桥等方案，考虑桥施工难度、施工工期、桥梁总造价等各方面因素，最终选取钢-混混合刚构桥作为推荐方案。其次，比选了双薄壁墩和矩形空心墩、钢-混接头位置、钢结构区段结构型式。由于矩形空心墩相比双薄壁墩受力更大，因此采用双薄壁墩；钢-混接头位置选取在弯矩零点；钢结构区段采用正交异性组合板，混凝土板全桥连续，通过剪力钉与钢箱梁连接。最后，介绍了结构设计及主要计算结果，结果表明各项指标均满足规范要求。
Abstract:
The girders of concrete continuous rigid frame bridge for high-speed railways with a span of about 200 m are featured by large residual creep value, which cannot meet the requirements of high-speed railways. To solve this problem, the steel-concrete hybrid continuous rigid frame can be adopted. This paper takes Xijiang Bridge of Guangzhou-Zhanjiang Railway as an example to study the design of steel-concrete continuous rigid frame bridge for 350 km/h high-speed railway. Firstly, a comparison was made among steel-concrete hybrid continuous rigid frame bridge, low pylon cable-stayed bridge, and continuous rigid frame arch bridge. Considering the difficulties, work period and total construction cost of bridge erection, the steel-concrete hybrid rigid frame bridge was finally selected as the recommended scheme. Secondly, a comparison was made between double thin-walled pier and rectangular hollow pier, and then the positions of steel-concrete joints and the structure of steel segment were selected. As the result, double thin-walled pier was adopted since it is subject to less stress than rectangular hollow pier is; the steel-concrete joints were positioned at the points of zero bending moment; the orthotropic composite plate was selected as steel segment, and the concrete slabs were paved continuously along the whole bridge, and connected to the steel box girders by shear studs. Finally, the structural design and main calculation results were introduced. The results show that all indexes meet the specification requirements.

备注/Memo

备注/Memo:
作者简介:孙宗磊(1974-),男,教授级高级工程师。引文格式:孙宗磊, 向律楷, 刘何亮. 350 km/h高速铁路钢-混混合连续刚构桥设计研究[J]. 高速铁路技术,2021,12(6):70-77.SUN Zonglei, XIANG Lvkai, LIU Heliang. A Study on Design of Steel-concrete Hybrid Continuous Rigid Frame Bridge for 350 km/h High-speed Railways[J]. High Speed Railway Technology, 2021, 12(6):70-77.
更新日期/Last Update: 2021-12-28