复杂条件下钢箱梁双向滑移施工胎架系统设计
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摘要
徐州北三环丁万河大桥,混凝土地面桥与主线高架钢箱梁桥同步施工,现场作业面极其狭窄,项目主线高架钢箱梁采用了先横移再纵移的双向滑移施工技术。受场地影响,滑移胎架只能布置于地面桥的7 m间隙中,拼装胎架只能布置于场地的角落;为使用库存材料,胎架结构的截面亦受限制。通过反复计算调整对胎架结构进行优化,最终保证结构设计的经济性及施工的便利性、安全性。
The concrete-floor bridge and the mainline elevated steel box girder viaduct of the Xuzhou Northern 3 rd Ring Road Dingwanhe Bridge were constructed simultaneously. The on-site operation area was extremely narrow. The overhead steel box girder of the main line adopted the bidirectional sliding construction technology of first horizontal and then longitudinal shift. Affected by the site,the sliding frame could only be arranged at the 7 m gap of the ground bridge,and the assembled frame could only be arranged at the corner of the site. The structure of the frame was optimized through the repeated calculation,and finally,the economy,convenience and safety of the structural design were ensured.
The concrete-floor bridge and the mainline elevated steel box girder viaduct of the Xuzhou Northern 3 rd Ring Road Dingwanhe Bridge were constructed simultaneously. The on-site operation area was extremely narrow. The overhead steel box girder of the main line adopted the bidirectional sliding construction technology of first horizontal and then longitudinal shift. Affected by the site,the sliding frame could only be arranged at the 7 m gap of the ground bridge,and the assembled frame could only be arranged at the corner of the site. The structure of the frame was optimized through the repeated calculation,and finally,the economy,convenience and safety of the structural design were ensured.
引文
[1]周前进,廖红成,彭鹏,等.城市道路双层高架桥钢箱梁现场安装工艺技术的研究应用[C]//2012中国钢结构行业大会论文集.北京:2012.
[2]熊建武,刘世艳.双层多幅钢箱梁桥在城市快速路中的应用[J].市政技术,2012(增刊2):94-97.
[3]谢志龙,汪雪风,刘玉贵,等.跨地铁站变截面钢箱梁顶推滑移施工技术与研究[J].钢结构,2015,30(8):90-95.
[4]杨亮,琚亮.某主线桥大跨度钢箱梁整体现场拼装及侧向滑移安装技术[J].钢结构,2012(增刊1):202-206.
[5]胡俊华,吴梦先.武汉市二环线汉口段钢箱梁临时支架设计[J].钢结构,2010,25(10):31-34.
[6]刘玉贵,汪雪风,谢志龙,等.基于MIDAS的站桥同位钢箱梁滑移胎架的研究与应用[J].钢结构,2015,30(12):92-96.
[7]中华人民共和国建设部.钢结构设计规范:GB 50017—2003[S].北京:中国计划出版社,2003.
[2]熊建武,刘世艳.双层多幅钢箱梁桥在城市快速路中的应用[J].市政技术,2012(增刊2):94-97.
[3]谢志龙,汪雪风,刘玉贵,等.跨地铁站变截面钢箱梁顶推滑移施工技术与研究[J].钢结构,2015,30(8):90-95.
[4]杨亮,琚亮.某主线桥大跨度钢箱梁整体现场拼装及侧向滑移安装技术[J].钢结构,2012(增刊1):202-206.
[5]胡俊华,吴梦先.武汉市二环线汉口段钢箱梁临时支架设计[J].钢结构,2010,25(10):31-34.
[6]刘玉贵,汪雪风,谢志龙,等.基于MIDAS的站桥同位钢箱梁滑移胎架的研究与应用[J].钢结构,2015,30(12):92-96.
[7]中华人民共和国建设部.钢结构设计规范:GB 50017—2003[S].北京:中国计划出版社,2003.