On the high-profile model erection of fastener-type steel pipe and door scaffolding mix, combined with work and professional knowledge, not less than 2000 words of the paper
"Construction of fastener type steel pipe scaffolding safety technical specifications" pole construction measures are: "construction of fastener steel scaffold safety technical specifications" JGJ130-. 3 pole 6.3.1 The base or pad should be set at the bottom of each pole. 6.3.2 Scaffolding must be set vertical and horizontal sweeping pole. Longitudinal sweeping pole should be fixed with fast nuts at the base of the base is not greater than 200mm on the pole. The horizontal sweep bar should be fastened to the pole on the underside of the longitudinal sweep bar. 6.3.3 scaffolding pole base is not at the same height, the height of the longitudinal sweep must be extended to the lower two spans and pole fixed, height difference should not be greater than 1m. The distance from the pole shaft above the slope to the slope should not be less than 500 mm (Figure 6.3.3). 6.3.4 single and double scaffolding bottom step should not be greater than 2m. 6.3.5 single row, double row and full house scaffolding pole in addition to the top of the top step, the rest of the layers of the joints must be used to connect the fastener connection. 6.3.6 Scaffolding pole docking, lap should meet the following requirements: 1 When the pole with docking long, the pole of the buttocks should be staggered layout, two adjacent rod joints should not be set in synchronization The distance between the joints of the joints to the main node should not be greater than the distance of 1/3; 2 when the pole with a lap to take a long time, the distance between the two joints should be less than 500mm; , Lap length should not be less than 1m, and should be used not less than 2 rotation and fasteners fixed. The distance from the edge to the end of the end fastener cover shall not be less than 100 mm. 6.3.7 scaffolding pole top railings should be higher than the top of the wall 1m, should be higher than the top of the cornice 1.5m.
Norms written very clearly, seriously look to know.
Pole (here mainly said floor or beam support pole) structure, the main solution to a "pressure bar stability" problem. Here is only given the general situation according to the recommendations. (Recently reported in the building of the collapse of the accident, many are not attached to the template support system, did not work in accordance with the provisions) . vertical and horizontal spacing, should be based on load, according to the calculation to determine. In addition to calculating the weight of concrete, but also consider the template weight, but also consider the impact of concrete is the impact of concrete load, but also consider the workers, tools, equipment weight. When pouring concrete is very fast, the impact load is great. (Large construction company, the template support system must give the calculation book) . if the long pole with a fastener (not butt fastener), should consider a fastener bearing maximum load can not exceed 700 kg (sliding friction) , Generally not more than 500 kg in terms of calculation (can not guarantee that each fastener in accordance with the standard fastening). . in order to strengthen the pole stability, must be required to set the standard two-way node constraints: ①, must have "sweeping pole." Two-way set, from the bottom of the pole 20 to 30 cm. To prevent the bottom of the pole from slipping. ②, the middle of the pole should be set to bidirectional horizontal tie rod (contact bar), the first rod height of not less than 180 cm, not more than 200 cm. (In order not to prevent the workers through the work) burden Cao Xiao 丨 consumption check the same intestinal pp, above the level of horizontal bar, each about 150 cm. . must ensure that the bottom of the pole placed in a solid support. Do not allow direct placement on the soil. And to prevent the soil from being softened by flooding. Above is only the basic requirements, specifically to see the relevant norms.
