[1]邵旭东,邱明红,晏班夫,等.基于UHPC材料的高性能装配式桥梁结构研发[J].西安建筑科技大学学报(自然科学版),2019,51(02):160-0167.[doi:10.15986/j.1006-7930.2019.02.002]
　SHAO Xudong,QIU Minghong,YAN Banfu,et al.Research of high performance fabricated bridge structures based on UHPC[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2019,51(02):160-0167.[doi:10.15986/j.1006-7930.2019.02.002]
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基于UHPC材料的高性能装配式桥梁结构研发()
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西安建筑科技大学学报（自然科学版）[ISSN:1006-7930/CN:61-1295/TU]

卷:
51
期数:
2019年02期
页码:
160-0167
栏目:
出版日期:
2019-04-28

文章信息/Info

Title:
Research of high performance fabricated bridge structures based on UHPC
文章编号:
1006-7930(2019)02-0160-08
作者:
邵旭东1; 2; 邱明红1; 2; 晏班夫1; 2; 胡伟业1; 2; 赵旭东1; 2
(1.湖南大学风工程与桥梁工程湖南省重点实验,湖南 长沙 410082;2.湖南大学 土木工程学院,湖南 长沙 410082)
Author(s):
SHAO Xudong 1; 2;  QIU Minghong 1; 2;  YAN Banfu 1; 2;  HU Weiye 1; 2;  ZHAO Xudong 1; 2
(1. Key Laboratory for Wind and Bridge Engineering of Hunan Province, Hunan University, Changsha 410082, China; 2. College of Civil Engineering, , Hunan University, Changsha 410082, China)
关键词:
桥梁工程; 装配式结构; 超高性能混凝土; 高性能桥梁结构体系
Keywords:
bridge engineering;  fabricated structure ;  ultra high performance concrete;  high performance bridge structure
分类号:
U 442.5
DOI:
10.15986/j.1006-7930.2019.02.002
文献标志码:
A
摘要:
针对现有装配式桥梁结构中共性的技术难题，提升装配式桥梁结构的性能与品质，笔者团队以超高性能混凝土（UHPC）为基础，研发了具有高施工性能、高使用性能和高耐久性能的高性能装配式桥梁结构体系。本文介绍了笔者团队研发的3类高性能装配式桥梁结构：(1)装配式 UHPC 箱梁结构；(2)全预制UHPC “π” 形梁；(3)全预制钢-UHPC 轻型组合 “π” 形梁。通过大量的试验研究和理论分析，掌握了各类装配式UHPC 桥梁结构的基本受力性能，并初步建立了计算理论和设计方法。研究结果表明：(1)等强度承载条件下，装配式UHPC 桥梁结构自重可降为传统结构的40 ~ 60%，方便运输，可实现大构件快速化架设；(2)因 UHPC 中钢筋锚固长度仅需10 倍钢筋直径，现场各梁间结合部可大幅度缩小，可实现现场零焊接，减少现场作业量，并完全规避节点开裂、渗漏的风险；(3)结构抗腐蚀、抗冻、防渗漏性能优良，基本实现结构设计寿命周期内免维护。综合而言，基于UHPC 材料的高性能装配式桥梁结构有望突破现有装配式桥梁中的技术瓶颈，具有广阔的应用前景。
Abstract:
Aiming at the common technical problems of existing fabricated bridges, and to improve the performance and quality of bridge, based on ultra high performance concrete (UHPC) technology, the research group at Hunan University developed the high performance fabricated bridge structure system with the excellent performance in workability, serviceability and durability. In this paper, three types of high performance bridge structures were introduced: (1) fabricated UHPC box girder; (2) fully fabricated UHPC π-shaped girder; (3) fully fabricated steel-UHPC π-shaped composite girder. Based on a great number of experimental study and theoretical analysis, the research group revealed the basic mechanical performance of the fabricated UHPC bridge structure, and preliminarily developed the calculation theory and design method for them. The research results show that: (1) With the same load-bearing capacity, the self-weight of UHPC fabricated bridge structure can be reduced to 40%~50% compared with conventional fabricated bridge structures, and it’s convenient for large bridge component to be transported and hoisted; (2) Since the anchorage length of rebars can be dropped to 10d in UHPC, the field-cast joint between various girder can be obviously reduced . As a result, the welding of rebars and the amount of work in the construction site can be canceled and decreased, respectively, while the risk of cracking and leakage in joint could be completely avoided; (3) The UHPC fabricated bridge structures could be maintenance-free in the service life owing to its excellent corrosion, freeze-thaw cycles and leakage resistance. To sum up, since the high performance fabricated UHPC bridge structures have the potential of overcoming technical bottlenecks in conventional fabricated bridges, they should have a promising future.

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备注/Memo

备注/Memo:

收稿日期：2018-10-01 修改稿日期：2018-03-22

基金项目：基金项目：国家重点研发计划（2018YFC0705400）；湖南省科技重大专项（2017SK1010）；广东省交通运输厅科技项目（2013-02-036）、湖南省研究生科研创新项目（CX2017B119）

第一作者：第一作者：邵旭东(1961–)，男，博士，教授，博士生导师，主要从事大跨与新型桥梁结构、基于UHPC的高性能桥梁新结构及旧桥加固技术研发等方向的研究。E-mail: shaoxd@hnu.edu.cn
更新日期/Last Update: 2019-05-23