[1]董传新,杜振华,徐领.高速铁路预应力混凝土连续梁节段预制悬拼法建造关键技术研究[J].高速铁路技术,2020,11(03):91-96.[doi:10.12098/j.issn.1674-8247.2020.03.019]
　DONG Chuanxin,DU Zhenhua,XU Ling.Research on Key Technology for Prestressed Concrete Continuous Beam with Precast Segment Cantilever Assembling Method in High-speed Railway[J].HIGH SPEED RAILWAY TECHNOLOGY,2020,11(03):91-96.[doi:10.12098/j.issn.1674-8247.2020.03.019]
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高速铁路预应力混凝土连续梁节段预制悬拼法建造关键技术研究()
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《高速铁路技术》[ISSN:1674-8247/CN:51-1730/U]

卷:
11卷
期数:
2020年03期
页码:
91-96
栏目:
出版日期:
2020-06-28

文章信息/Info

Title:
Research on Key Technology for Prestressed Concrete Continuous Beam with Precast Segment Cantilever Assembling Method in High-speed Railway
文章编号:
1674—8247(2020)03—0091-06
作者:
董传新;  杜振华;  徐领
1. 中国铁路上海局集团有限公司, 上海 200071;
2. 中铁第四勘察设计院集团有限公司, 武汉 430063
Author(s):
DONG Chuanxin;  DU Zhenhua;  XU Ling
1. China Railway Shanghai Group Co., Ltd., Shanghai 200071, China;
2. China Railway Siyuan Survey and Design Group Co., Ltd., Wuhan 430063, China
关键词:
高速铁路|铁路桥|预应力混凝土|连续梁|箱梁|节段预制拼装|胶结缝|设计
Keywords:
high-speed railway|railway bridge|prestressed concrete|continuous beam|box girder|assembled precast segment|epoxy resin joint|design
分类号:
U445.57
DOI:
10.12098/j.issn.1674-8247.2020.03.019
文献标志码:
A
摘要:
连云港至徐州高速铁路东海特大桥（32+48+32）m无砟轨道预应力混凝土连续梁采用节段预制胶拼法建造，本文对其预制拼装方案、节段划分、预应力束布置、结构设计以及主要工程数量等进行了分析研究。主要研究成果有：（1）节段预制胶拼法施工预应力混凝土连续梁的设备及施工方法多样，应结合施工现场实际情况，因地制宜选择相应设备和施工方法，本桥采用的平衡悬臂拼装工艺，起吊重量较小，架桥机成本投入较少；（2）采用与原设计（32+48+32）m悬灌梁相同的外轮廓及梁高，可满足节段预制拼装法施工的需求；（3）节段预制拼装连续梁预应力度较高，混凝土、预应力筋及普通钢筋用量较悬灌梁多，总体费用偏高，有必要开展进一步研究，提高其经济性。相关成果可供类似工程借鉴参考。
Abstract:
Donghai super major bridge (32+48+32) m ballastless track prestressed concrete continuous beam of Lianyungang-Xuzhou high speed railway is constructed by precast segment assembling method with epoxy resin joints. The precast and assembly scheme, segment division, prestressed tendon arrangement, structural design and the quantities of the main works are analyzed and researched in this paper.The main results are as follows:(1) if the precast segment assembling method with epoxy resin joints is used in prestressed concrete continuous beam in high-speed railway, there are various equipment and construction method for prestressed concrete continuous beam. The corresponding equipment and construction methods should be selected according to the actual situation of the bridge site. The balanced cantilever assembly techonolgy is adopted for this bridge, which has small lifting weight and less investment in bridge erecting machine. (2) The same outer contour and beam depth as the original cantilever beam (32+48+32) m can meet the requirements of precast segment assembling construction. (3) Because the prestressing force of the precast segment assembling continuous beam is big, and the amount of concrete, prestressing tendon and ordinary reinforcement is more than that of cantilever beam, the overall cost is higher. It is necessary to carry out further research to improve the economy of segmental concrete bridges. The results of this project can be used for reference in similar projects.

备注/Memo

备注/Memo:
作者简介:董传新(1971-),男,高级工程师。引文格式:董传新, 杜振华, 徐领. 高速铁路预应力混凝土连续梁节段预制悬拼法建造关键技术研究[J]. 高速铁路技术, 2020, 11(2):91-96.DONG Chuanxin, DU Zhenhua, XU Ling. Research on Key Technology for Prestressed Concrete Continuous Beam with Precast Segment Cantilever Assembling Method in High-speed Railway[J]. High Speed Railway Technology, 2020, 11(2):91-96.
更新日期/Last Update: 2020-06-28