|
|
|
| Design of 2x108m Single T Rigid Frame Movable Suspended Scaffold for Shanxi-Shaanxi Yellow River Bridge |
| LU Zhi-liang, LV Peng, JIA Dong-rong |
| The First Engineering Co. Ltd of Shanghai Engineering Bureau of CREC, Wuhu, Anhui 241007, China |
|
|
|
|
Abstract Research purposes: The structure of 15 spans 2X108m single T rigid frame steel truss was used for the main bridge of Shanxi-Shaanxi Yellow River of the Datong-Xi'an Passenger Dedicated Line and it was used in China for the first time. The single box and double chamber structure with various heights and sections, many segments and heavy weight was used for the box girder. The symmetrical pouring was conducted in the sections of the T rigid frame cantilever after the suspended scaffold was assembled on the piece 0#. To ensure the safe and high-efficient construction of the 2X108m T rigid frame, the movable suspended scaffold with less weight and being able to bear the load of the heavy segment had to be designed for cooperating with the construction.
Research conclusions: The tri-piece and double assemble rhombus truss structure was used for the 2X108m T rigid frame as the main frame to bear the load. (1) The member bar met the requirement of the load bearing, the maximum deformation of the suspending system on the bottom die platform was 11.3 mm, the maximum deformations of the internal and external sliding girders and suspension were 7.2mm, the maximum deformations of the front top cross girder and rhombus truss structure were 25.1 mm, the maximum deformation of the rear anchorage system was 1.7mm and the load bearing and deformation of the member bar of the suspended scaffold was in allowable range. All these met the requirements. (2) The suspended scaffold weight was less and it could save the cost. (3) It was easy to operate and it could speeded up the construction process on the premise of ensuring the construction quality. (4) It could provide the reference to the similar works.
|
|
Received: 23 April 2012
|
|
|
|
|
|
[1] TB 10203—2002,铁路桥涵施工规范[S]. TB 10203—2002, Code for Construction on Bridge & Culvert of Railway [S].
[2] 铁建设 [2010] 241号，高速铁路桥涵工程施工技术指南[S] . Railway Construction [2010] No.241, Technical Guide for Construction of High-speed Railway Bridge and Culvert Engineering [S].
[3] 林玉森,张运波，强士中. 宽桥面挂篮设计与悬灌施工技术[J]. 铁道工程学报, 2006(2): 39-42. Lin Yusen, Zhang Yunbo, Qiang Shizhong. Suspended Basket Design of Wider Bridge and Technique of Cantilever Construction [J]. Journal of Railway Engineering Society, 2006(2): 39-42.
[4] 滕炳杰. 挂篮悬浇与大节段支架现浇方案对比分析[J]. 铁道工程学报, 2012(6): 55-58. Teng Bingjie. A Comparative Analysis of the Cradle Cantilever Casting and Large Segmental Support Cast-in-place Method [J]. Journal of Railway Engineering Society, 2012(6): 55-58.
[5] 魏贤华.菱形挂篮设计与施工[J]. 桥梁建设,2005(1): 42-45. Wei Xianhua. Design and Construction of Diamond-shape Form Traveler [J]. Bridge Construction, 2005(1): 42-45.
[6] 文求. LGL120型菱形挂篮的改造与应用[J]. 铁道标准设计, 2006(11): 41-44. Wen Qiu. Reconstruction and Application of LGL120-typed Suspended Basket in Diamond Shape [J]. Railway Standard Design, 2006(11): 41-44.
[7] 邱训兵, 周栩. 轻型大悬臂菱形挂篮设计[J]. 施工技术, 2004(9)：6-7. Qiu Xunbing, Zhou Xu. Design of a Light Large Cantilever Rhombic Hanging Basket [J] . Construction Technology, 2004(9): 6-7.
[8] 张建友. 轻型悬臂菱形挂篮设计[J]. 科学之友，2007(7B): 37-39. Zhang Jianyou. Design of Light Cantilever Rhombus Hanging Basket [J]. Friend of Science Amateurs, 2007(7B): 37-39.
[9] 徐鹏祥，胡怡康. 菱形挂篮的设计及应用[J]. 企业技术开发, 2005(1): 12-15. Xu Pengxiang, Hu Yikang. The Design of Rhombic Suspension and Its Application [J]. Technological Development of Enterprise, 2005(1): 12-15.
|
|
|
|
2013, Vol. 30 
