河北航空基地维修机库工程网架拔杆提升施工技术
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摘要
石家庄河北航空基地维修机库大厅屋面为3层斜放四棱锥全焊接球网架结构,结合现场实际情况及工程特点,选用"杆件地面组装,分段整体提升"的安装方案。施工前,对网架提升设计中拔杆的选择、稳定性及网架提升吊点布置等关键技术使用专业软件建模进行精确验算分析,施工过程中对网架单元拼装及提升过程中的人员配备、拔杆安装、起吊、同步控制等重要环节进行有效管控。经实际监测,该钢网架变形均在允许范围之内,满足设计要求。
The lobby roof of Shijiazhuang Hebei Aviation Base Maintenance Hangar is a three-layer and quadrangular pyramid all-welded ball grid structure.Combined with engineering characteristics and on-site actual situations,the installation program of"assembling members on the ground,integral lifting by segment"was used.By taking advantage of professional computer software,the modeling was used to make accurate calculation and analysis of key technologies including selection and stability of pulling bar and suspending point arrangement of grid structure lifting.Moreover,during construction,it was effectively controlled important links of the process of grid structure's unit assembly and lifting,including personnel allocation,pulling bar installation,lifting and synchronous control.The deformation of steel grid frame could meet the requirement of design according to the monitoring results.
The lobby roof of Shijiazhuang Hebei Aviation Base Maintenance Hangar is a three-layer and quadrangular pyramid all-welded ball grid structure.Combined with engineering characteristics and on-site actual situations,the installation program of"assembling members on the ground,integral lifting by segment"was used.By taking advantage of professional computer software,the modeling was used to make accurate calculation and analysis of key technologies including selection and stability of pulling bar and suspending point arrangement of grid structure lifting.Moreover,during construction,it was effectively controlled important links of the process of grid structure's unit assembly and lifting,including personnel allocation,pulling bar installation,lifting and synchronous control.The deformation of steel grid frame could meet the requirement of design according to the monitoring results.
引文
[1]马峥嵘.三层网架结构设计及抗震性能研究[J].建筑结构,2009(9):97-99.
[2]刘京红,杜旭冉,郝文秀,等.斜搁四棱锥三层网架的竖向地震响应分析[J].四川建筑科学研究,2008(1):117-119.
[3]刘彪,刘航,李晨光,等.首都机场A380机库钢屋盖整体提升施工方案分析[J].钢结构,2008,23(1):60-64.
[4]GB 50205—2001钢结构工程施工质量验收规范[S].
[5]郭彦林,游大江,王永海,等.首都国际机场A380机库屋盖整体提升一体化建模分析[J].工业建筑,2007(9):131-134.
[6]杜峥嵘,欧阳恒,姚建忠,等.某机库屋盖大跨度网架整体提升施工仿真分析技术[J].钢结构,2013,28(8):68-70.
[7]汪道金,曾繁娜.大跨度屋面钢网架(壳)结构施工技术[J].施工技术,2010(2):24-29.
[8]陈会荣,苏建成,陈祥龙,等.首都机场B747机库重型网架整体提升施工技术[J].建筑技术,2010(7):617-619.
[2]刘京红,杜旭冉,郝文秀,等.斜搁四棱锥三层网架的竖向地震响应分析[J].四川建筑科学研究,2008(1):117-119.
[3]刘彪,刘航,李晨光,等.首都机场A380机库钢屋盖整体提升施工方案分析[J].钢结构,2008,23(1):60-64.
[4]GB 50205—2001钢结构工程施工质量验收规范[S].
[5]郭彦林,游大江,王永海,等.首都国际机场A380机库屋盖整体提升一体化建模分析[J].工业建筑,2007(9):131-134.
[6]杜峥嵘,欧阳恒,姚建忠,等.某机库屋盖大跨度网架整体提升施工仿真分析技术[J].钢结构,2013,28(8):68-70.
[7]汪道金,曾繁娜.大跨度屋面钢网架(壳)结构施工技术[J].施工技术,2010(2):24-29.
[8]陈会荣,苏建成,陈祥龙,等.首都机场B747机库重型网架整体提升施工技术[J].建筑技术,2010(7):617-619.
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