The structural mode of steel structure installation is framework. Combined with prefabricated component mode, net weight, position in place and specific conditions of construction site, as well as the main parameters and characteristics of hoisting of tower crane set on site, the comprehensive installation method is selected for the steel structure project of the project.

Steel structure installation

1. the standard of “first in the middle, then outside, first in the column, then in the beam, first in the loose and then in the upper” shall be selected for the hoisting of steel structure works.In the middle of the plant area, a stable structure management system will be generated first, and then push and symmetrically install the remaining steel beams and prefabricated steel beams on both sides.

2. Retest of steel structural bolts unloading of steel prefabricated members mobilization inspection of prefabricated members directly hoisting of crane in place temporary tightening of steel structural bolts temporary fastening of cable and wind rope adjustment of steel beam center line and flatness tightening and welding of steel beam anchor bolt and column base pressing plate installation of next steel beam installation of tie bar between steel columns stable grid management system is produced- the portal steel frame pavement is assembled as a whole and lifted in place by two machines to form the portal steel frame – symmetrical installation columns on both sides, roof truss management system – and so on until the installation is completed and the structural engineering acceptance.

Steel structure installation

3. install the second row of steel beams.

4. install the middle coupling beam (or tie bar) of the steel beam.

5. one portal steel frame shall be installed by double crane; two portal steel frames shall be installed by double crane.

6. install the purling in the middle of the two roof trusses to produce a stable structure management system; continue to install the steel beams, coupling beams, roof trusses and purling of the next rigid frame.

7. continue to install the roof truss according to the above sequence, and install the supports between columns alternately; continue to install; the roof truss installation is completed.

Steel structure installation

After the roof steel beam is lifted in place, relevant roof purling shall be connected before loosening the hook, so as to produce a stable structure of spatial structure.If the roof purling cannot be installed before the hook is loosened during the installation of steel structure, the cable wind rope shall be pulled to prevent the steel beam of roof truss from skewing.The cable wind rope shall be fixed to the steel beam of roof truss before lifting. There are four cables in total. The cable wind rope shall be set at 1 / 3 of the length of steel beam, and the cable wind rope shall be set at the plinth of nearby steel beam.