92
DO1;10. 7672/sgjs2014230092
施工技术
CONSTRUCTION TECHNOLOGY
西宝客专桥隧相接桥梁施工技术
谢文祥"3，赵挺生，戴志兵”，王文利”，占征杰”
（1.华中科技大学土木工程与力学学院，湖北武汉430074；2.中交二航局工程装备分公司，湖北
2014年12月上
第43卷
第23期
武汉430014；
3.湖北工业大学工程技术学院，潮北武汉
430068)
【摘要】西宝客运专线现有架桥机无法正常通过小村隧道，为此，在分析了架桥机通过小村隧道的施工工艺后，优选了隧道进出口相接桥梁施工工艺。采用运梁车载运架桥机退回梁场后，在架场内对架桥机小解体，然后通过隧道；隧道进口桥梁由支架现浇梁优化为预制架设，出口相接处两孔箱渠原设计采用支架现浇作为架桥机拼装场地，优化为利用隧道出口缓冲结构（出口缓冲结构二次衬翻后浇)和隧道出口桥梁首孔收位处回填土拼装架桥机，然后架设隧道前进方向预制箱梁。
【关键词】桥梁工程；隧道工程；架桥机；施工技术
【中图分类号】U445.46
【文献标识码】A
【文章编号】1002-8498（2014)23-0092-04
Construction Technology of Bridge ConnectingwithTunnel for Xi'an-Baoji
High-speed Passenger Railroad Line
Xie Wenxiang'-3,Zhao Tingsheng',Dai Zhibing',Wang Wenli',Zhan Zhengjie
(1. School of Ciril Engineering & Mechanics, Huazhong Unirersity of Science and Technology, Wuhan,Hubei 430074, China;
2. Engineering Equipment Branch of CCCC Second Harbour Engineering Co. ,Ld. , Wuhan,Hubei 430014, China; 3. College of Engineering and Technology,Hubei University of Technology, Wuhan,Hubei 430068,China)
Abstract: On the Xi'an-Baoji high-speed passenger railroad line, the existing bridge erecting machine is unable to normally pass the Xiaocun Tunnel. In view of this, after analyzing the construction technology for the passing of the bridge erecting machine through Xiaocun Tunnel, this paper adopted the construction technology of the bridge connecting with tunnel at the entrance and exit. After transporting the bridge erecting machine back to the girder filed using the girder carrying vehicle, inside the girder field, this paper conducted small dismantling of the bridge erection machine, and then passed them through the tunnel. The bridge at the tunnel entrance was optimized into prefabricated erection, and at the joining sections for the exit, the tow-hole box girders were originally designed to adopt the support cast-in-site girder as the assembling field for bridge erecting machine, and it was optimized as assembling the bridge erecting machine by adopting the bumper structures at the exits (which was cast after the secondary lining of the bumper structures at the exit) and the backfill soil at the bridge's first hole's pillar at the tunnel
exit, and then erected the prefabricated box girders along the tunnel's advancing direction. Key words:bridges; tunnels; bridge erecting machine; construction
1工程概况
小村隧道位于陕西省宝鸡市陈仓区，渭河南岸三级阶地，属秦岭山前黄土台源区，线路从国道 G310小村附近山坡进洞，下穿唐家塬，从马尾河右侧山坡出洞，最小埋深16m，最大埋深46m，为双线
·中交二航局基金项目（2010082)
【作者简介】谢文样，高级工程师，博士研究生，E-mail：437758059@ qq.cor
收稿日期】2013-12-06 万方数据
黄土浅埋隧道。隧道起里程DK627+747— DK628+650，全长903m，明挖52m，V级围岩558m， IV级围岩300m。隧道净空宽13.3m，高9.6m。隧道位于R=8000m圆曲线上，润内纵坡为11%和 3%的人字坡。隧道进出口桥梁12座。
XBZQ-2标段第三项目经理部所用架桥机为 HZQ-900型，主机长×宽×高为73.92m×17.8m× 13.48m，显然，架桥机无法通过该隧道。为保证架桥机穿隧道施工安全，降低施工成本，分析客运专线中