I, project overview

North Park G23 # commercial and residential building by Jiangmen Bailong Real Estate Industry Co. Each building of this project has a floor area of about 7300m2, seven-storey semi-duplex frame structure, the total height of the building is 27.8m, the first floor height of 5.1m, two to eight (duplex) floor height are 3m.

Second, the construction parameters and lap requirements

This project unloading platform is built using multi-poles steel pipe, all the rods are used Ф48 × 3.5mm, the unloading platform plane Size of 2.2m × 1.2m, and the building wall spacing of 1.2m, *** counts two rows of parallel to the building longitudinal pole, each row has 2 poles, spacing of 2.2m, the inner row of longitudinal poles and the building wall is fixed, longitudinal spacing is close, each layer of unloading platform parallel to the building longitudinal poles 2, perpendicular to the building crossbar 5, platform crossbar spacing of 0.55m, longitudinal poles spacing is 1.2m, 4 poles, platform longitudinal and transverse poles laying a layer of 30mm thick pine wood horizontal board. Each layer of the unloading platform of the two outer crossbar and the upper and lower unloading platform of the outer crossbar are reinforced with diagonal tie rod connection. The outside of the rod should be hung with a dense safety net.

Three, unloading platform erection and installation

1, foundation structure

Riser is not directly buried in the soil, but in the leveling and compacting of the ground surface, cushion with a thickness of not less than 50mm cushion wood or cushion plate, and then in the cushion wood (or cushion plate), then set up a steel pipe base and then the rod. Matting should be 2.0 ~ 2.5M long, wider than 200mm, 50 ~ 60mm thick board, and placed perpendicular to the wall; if you use 4.0M long matting, can be placed parallel to the wall.

2, erection method

Foundation treatment should be firm and reliable, matting should be laid smoothly, there can be no overhang, the base of the pole should be nailed firmly on the matting. And strictly comply with the erection order:

Establish the vertical pole one by one and fasten the vertical pole with each vertical pole to fasten the horizontal pole and vertical pole to fasten the vertical pole to fasten the diagonal tie rod to fasten the vertical pole to fasten the wall rod to pave the wooden scaffolding board to hang the net to protect.

The erection should be timely and the building structure tie, or use temporary support roof, in order to ensure the safety of the erection process, and with the erection with the correction of verticality and horizontal deviation of the rod, and at the same time moderately tighten the fasteners, the root of the bolt should be put in the right place, when checking with the torque wrench, it should be between 40 ~ 50N-m, the maximum can not be more than 80N-m, the connection of the rod buttress fasteners, the openings should be directed towards the shelf Inside, the bolt should be upward to prevent rainwater from entering.

Four, unloading platform demolition

1, shelf demolition should be divided into work area, set up around the fence or erect warning signs, ground with a person to direct, strictly prohibit non-operators to enter.

2, the demolition of the high place of work personnel, must wear helmets, safety belts, tied feet, wear soft-soled non-slip shoes.

3, the demolition order should follow the principle of top to bottom, the first after the demolition, after the first demolition. That is, the first demolition of scaffolding boards, diagonal rods, after the demolition of crossbars, longitudinal rods, vertical rods, etc., and according to the principle of one step at a time, it is strictly prohibited to dismantle the upper and lower at the same time.

4, dismantle the vertical rod, should first hold the vertical rod and then dismantle the last two buckles.

5, the wall point should be removed with the demolition progress layer by layer.

6, demolition should be unified command, up and down echo, action coordination, when unlocking the knot buckle related to another person, should first notify the other party to avoid falling.

7, demolition, such as nearby external power lines, to take isolation measures. It is strictly prohibited for the racking pole to touch the power line.

8, demolition should not touch the windows, doors, glass, downpipes, eaves piece, underground gutter and other items.

9, demolition of materials, should be tethered to the rope, the use of pulleys slowly transported down, it is strictly prohibited to throw, transported to the ground materials should be designated locations, with the demolition of transport, sorting and stacking, the day of demolition of the same day, demolition of fasteners or wire should be centralized recycling treatment.

10, in the process of dismantling the frame, shall not be changed in the middle, such as must be changed, should be dismantled to explain the situation before leaving.

11, remove the shelf before the shelf should be cleaned up debris.

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