槽形钢梁-预制混凝土桥面板组合箱梁设计研究.pdf

桥梁建设2016年第46卷第6期(总第241期)
Bridge Construction, Vol 46, No6, 2016(Totally No 241)
文章编号:1003472(2016)06-0035-05
槽形钢梁一预制混凝土桥面板组合箱梁设计研究
刘钊2,那渊,贺志启2,马增',田飞
1.东南大学混疑土及预应力混凝土结构教育部重点实验室,江苏南京210096;2.国家预应力工程
技术研究中心,江苏南京210096;3,华汇工程设计集团股份有服公司,浙江绍兴312000)
要:为促琎桥梁快速范工技术发晨并减轻既有中小跨径混凝土桥梁病害,开展一种槽形
钢采一预制混凝土桥面板组合梁的设计研究。槽形钢梁中心间距3.2m,在梁端及跨内分别设置
板式与桁架式横联,在钢梁上異缘设置簇钉群作为剪力件。每块预制板的纵向长度取2.96m,横
向宽度可根据现场运条件癩定。该組合梁可采用无支架拼装施工,即先以铜主梁支承预制桥面
板,并在形成组合結构后承受二期恒载与活載。对比現有的横向装配式预应力混凝土小箱粱,装
配式钢一混组合梁可降低梁高7%~10%,滅少自重30%~37%,其所采用的预制单元划分策略和
簇钉群连接技术有利于提高桥梁建设遠度和质量。
关键词:组合梁桥;槽形钢梁;预制混凝土桥板;簇连接件;快施工
中图分类号:U448.216;U442.5文标志码:A
Design and Development of a Composite Girder with
Steel Tub Girders and Precast Concrete Deck Slabs
LIU Zhao=, XING Yuan, HE Zhi-qi]., MA Zeng, TIAN Fei
(1. Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast
University, Nanjing 210096, China; 2. National Engineering Research Center for Prestress Technology
lanjing 210096, China; 3. Huahui Engineering Design Group Co, Ltd, Shaoxing 312000, China)
Abstract: To promote the accelerated bridge construction technique and to mitigate the com-
mon distresses in the existing short and medium span concrete bridges, a composite girder with the
multiple steel tub girders and precast concrete deck slabs has been designed and developed. The
center-to-center spacing between the steel tub girders is 3. 2 m, At the ends and in the span ranges
of the tub girders, the steel plate and steel truss transverse bracings are respectively arranged and
on the upper flanges of the tub girders, the group clustered studs are arranged and are to be use
as the shear connectors. The longitudinal length of each precast concrete deck slab is 2.96 m and
the width of the slab can be determined according to the site shipment condition. The composite
girder herewith can be assembled, using the unshored construction method, i. e. the steel tub gird-
ers are used to firstly carry the precast concrete deck slabs during the construction and then to car-
ry the second phase dead load ard live load after the composite structure is formed. Compared with
the existing transversely assembled prestressed concrete box girders, the composite girder can re
duce the girder depth by 7%-10% and the girder self weight by 30%--37%. The strategy of the
prefabricated element dividing and the technique of the clustered stud connection of the composite
girder can greatly accelerate the bridge construction and improve the construction quality.
收日期:2016-01
金项目:浙江.省交邇运厅科研计划项目(2016026);江苏省交通运输科研计划项图(2014YO1)
Project of Seience and Technology Research Progran of I)epartment of Transport, Zhejiang Province (2016026), Proyect of
ransport Science and Technology Research Program of Jiangsu Province (2014 Yo1))
作者简介:刘钊,教投,F-mail.mi,liuzhao@seu.edu.cn,研究方向:桥梁结构设计理论。
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