吉林大学学报(工学版) ›› 2025, Vol. 55 ›› Issue (10): 3242-3252.doi: 10.13229/j.cnki.jdxbgxb.20240089

• 交通运输工程·土木工程 • 上一篇    

超高性能钢壳混凝土连续刚构桥概念设计与可行性

刘世明1,2(),张威2,马印平3,刘永健3()   

  1. 1.华北水利水电大学 河南省生态建材工程国际联合实验室，郑州 450045
    2.华北水利水电大学 土木与交通学院，郑州 450045
    3.重庆大学 土木工程学院，重庆 400045
  • 收稿日期:2024-01-23 出版日期:2025-10-01 发布日期:2026-02-03
  • 通讯作者: 刘永健 E-mail:liushm@ncwu.edu.cn;liuyongjian@chd.edu.cn
  • 作者简介:刘世明（1980-），男，副教授，博士.研究方向：钢桥与组合结构桥梁.E-mail： liushm@ncwu.edu.cn
  • 基金资助:
    国家自然科学基金项目(51508189);重庆市在渝院士牵头科技创新引导专项项目(CSTB2023YSZX-JSX0004);河南省科技攻关项目(232102321079);河南省科技攻关项目(232102321080);河南省自然科学基金项目(252300420048);河南省教育厅科学技术重点研究项目(26B560009)

Conceptual design and feasibility of ultra-high-performance steel-shelled concrete continuous rigid-frame bridge

Shi-ming LIU1,2(),Wei ZHANG2,Yin-ping MA3,Yong-jian LIU3()   

  1. 1.International Joint Research Lab for Eco-building Materials and Engineering of Henan，North China University of Water Resources and Electric Power，Zhengzhou 450045，China
    2.School of Civil Engineering and Communication，North China University of Water Resources and Electric Power，Zhengzhou 450045，China
    3.School of Civil Engineering，Chongqing University，Chongqing 400045，China
  • Received:2024-01-23 Online:2025-10-01 Published:2026-02-03
  • Contact: Yong-jian LIU E-mail:liushm@ncwu.edu.cn;liuyongjian@chd.edu.cn

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摘要：

以钢壳内填超高性能混凝土（UHPC）并设置开孔钢板连接件（PBL）加劲肋为基本构成单元，提出了一种新型超大跨径连续刚构桥——超高性能钢壳混凝土（UHP-SSC）箱梁连续刚构桥。UHP-SSC箱梁采用UHPC受压、钢壳受拉，可作为UHPC浇筑免拆模板，能够充分发挥钢材与UHPC轻质高强的特性。对主跨400 m级UHP-SSC箱梁连续刚构桥开展概念设计研究，结果表明：新型UHP-SSC箱梁的顶板、底板和腹板厚度均显著减薄。新型连续刚构桥的合理边中跨比为0.5~0.65，桥墩处和跨中的合理梁高比为2.59~3.59，桥墩处梁高应占主跨跨径的1/26~1/32。该新型箱梁的强度及刚度都满足规范中关于预应力混凝土主梁的受力要求。对比同等跨径的混合梁连续刚构桥、拱桥、斜拉桥和悬索桥，UHP-SSC连续刚构桥上部结构自质量分别减少了约132.8%、76.8%、324.4%和338.3%，碳排放量分别降低了约28.5%、57.1%、14.1%和55.7%。新型UHP-SSC连续刚构桥的上部结构造价与混合梁连续刚构桥、拱桥相比分别提高约3.1%、1.3%，与斜拉桥、悬索桥相比分别降低约26%、46.1%。新型UHP-SSC连续刚构桥具有显著的结构轻量化特征和优越的经济、环保性能，在大跨径梁桥方面具有极强的竞争力和较好的工程推广应用前景。

关键词: 桥梁工程, 箱梁, 超高性能钢壳混凝土, 连续刚构桥, 概念设计

Abstract:

In this paper， a novel type of super-long-span continuous rigid-frame bridge was presented， ultra-high-performance steel-shelled concrete（UHP-SSC） continuous rigid-frame bridge with box girder， with steel shell filled with ultra-high-performance-concrete（UHPC） and perfobond leiste stiffeners（PBL） as fundamental components unit. UHP-SSC box girder employed UHPC to bear pressure， and steel shells bear tension， which may be used as the UHPC pouring non-removable formwork， allowing the light self-weight and high strength properties of steel and UHPC to be completely exploited. Conceptual design of the 400-meter-long continuous rigid-frame bridge with UHP-SSC box girder was studied， the results indicated that the thickness of top plate， bottom plate， and web plate of the UHP-SSC box girder can be greatly lowered. The suitable side-to-mid span ratio new continuous righid-frame bridge is 0.5~0.65， and the reasonable beam height ratio of the pier and midspan is 2.59~3.59， and the height of box girder at the pier accounts for 1/26~1/32 of the main span. The strength and stiffness of the new box girder meet the mechanical requirements of the code for fully prestressed concrete structure. The superstructure weight per square meter of UHP-SSC continuous rigid-frame bridge is reduced by approximately 132.8%， 76.8%， 324.4% and 338.3% respectively， when compared to mixed beam continuous rigid-frame bridge， arch bridge， cable-stayed bridge， and suspension bridge with similar span， and the carbon emissions are also reduced by about 28.5%， 57.1%， 14.1% and 55.7%. The superstructure cost of the new UHP-SSC continuous rigid frame bridge is increased by about 3.1% and 1.3% respectively， when compared to the mixed beam continuous rigid-frame bridge and arch bridge， and decreased by about 26% and 46.1% respectively， when compared to the cable-stayed bridge and suspension bridge. The new UHP-SSC continuous rigid-frame bridge has evident structural light self-weight properties， better economic and environmental performance， and has strong competitiveness in long-span beam bridges， as well as excellent technical popularization and application possibilities.

Key words: bridge engineering, box girder, ultra-high-performance steel-shelled concrete, continuous rigid-frame bridge, conceptual design

中图分类号: 

  • U448.23

图1

UHP-SSC箱形截面基本组成单元"

图2

UHP-SSC箱形截面构造"

图3

UHP-SSC箱梁关键参数设计流程"

表1

UHPC材料特性"

强度等级弹性模量/GPa泊松比线膨胀系数徐变系数容重/（kN·m-3）轴向抗压强度/MPa轴向抗拉强度/MPa
fcu，kfckfcdftkftd
UC12045.00.21.1×10-50.2251208457.55.84

图4

UHP-SSC连续刚构桥有限元模型"

图5

UHP-SSC箱梁边中跨比与单位长度应变能关系"

图6

桥墩梁高与跨中梁高比和挠度关系"

表2

墩顶箱梁底板最大压应力和跨中挠度"

墩顶箱梁底板厚度/m最大压应力/MPa挠度/mm挠度与主跨跨径比
0.6-43.7-307.71/963
0.7-40.7-301.81/981
0.8-38.3-296.81/998
0.9-36.4-292.41/1 013
1.0-34.8-288.61/1 026
1.1-33.5-285.31/1 038
1.2-32.5-282.31/1 049
1.3-31.6-279.71/1 059
1.5-30.2-275.21/1 076

图7

桥墩处箱梁底板厚度与最大压应力及跨中挠度关系"

图8

UHP-SSC箱梁桥墩处和跨中截面构造（单位：cm）"

表3

上部结构的主要技术经济指标对比"

序号桥名（结构类型）跨径布置/m

桥宽

/m

上部结构混凝土用量/m3上部结构钢材用量/t上部结构总质量/t

上部结构

自质量/

（t·m-2）

上部结构造价/（万元·m-2）上部结构碳排放量/（t·m-2）
1本文（UHP-SSC连续刚构桥）230+400+230167 943.06 118.925 976.41.8881.2269.753
2重庆石板坡长江大桥复线桥（混合梁连续刚构桥）

87.85+4×138+

330+133.75

1932 332.011 332.092 162.04.3951.18812.536
3巫峡长江大桥（中承式钢管混凝土拱桥）460199 224.36 120.129 180.83.3391.21015.319
4干溪沟1号桥（斜拉桥）155+360+15527.155 297.87 251.7145 496.28.0131.54511.132
5红光大桥（自锚式悬索桥）3802529 179.05 672.078 619.58.2761.79115.190

图9

不同桥型上部结构的主要技术经济指标对比"

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