What problems should be paid attention to when dismantling wheel buckled scaffolding?

In the early stage of construction, the special construction scheme design of the system should be done, and the general contractor should put out the line, so that the support system is horizontal and vertical, and the setting of the rear scissor brace and the straight ladder connecting rod should be ensured to ensure its overall stability and anti-overturning performance. In the process of using the wheel-buckled scaffolding, it is advisable to use the elevation range of the beam and plate place of the same elevation, and for the single member support home with a large height and span, the tensile force and the axial pressure (critical force) of the vertical rod are checked to ensure the stability and safety of the frame. Because at present, China's Ministry of Construction has not yet issued industry standards and specifications for wheel buckle scaffolding, but it has begun to be widely used in construction sites, and it is hoped that the relevant departments will formulate corresponding specifications to make its correct use in the project have a reliable basis.

Different scaffolding uses are different, and the application environment is also different. Wheel-type scaffolding is suitable for erection on the ground with hard base, flat ground and hardened concrete. When disassembling the pole, it is necessary to fix the pole first, and the last two buckle removal points should be coordinated with each other, and when untying the knot related to another person, the other party should be notified first to prevent falling.

After dismantling a large piece of wheel buckle scaffolding, there must be a ramp and passage, and it should be reinforced first, so as to ensure its integrity and safety unchanged after dismantling. When dismantling, if there are external power lines nearby, it should be isolated. It is strictly forbidden to contact the pole and the wire.

When dismantling the wheel-type scaffolding, do not damage the doors and windows, water pipes, eaves tiles and other items.

For builders, in order to make the scaffolding more safe to put into use, they prefer to choose wheel buckle scaffolding. However, if the re-construction is not carried out in accordance with the relevant regulations, the wheel-buckle scaffolding after construction will also have problems with use. Here, we will talk about what to pay attention to when building the lower wheel buckle scaffolding.

For the construction workers of this roof, they must be certified by the Ministry of Labor to the "Regulations on the Management of Safety Technical Training and Assessment of Special Operations Personnel" before they can be licensed to operate. For the operators of the scaffolding workers, not only need to hold a certificate to work, but also must wear a safety helmet and safety belt in time for construction operations, and only after wearing non-slip shoes on their feet, they can go to work for construction. In some special weather, such as fog, or rain and snow, and when the wind reaches more than six levels, scaffolding construction work is not allowed.

Workers who return to work after such weather are over must wear non-slip shoes.

In the early stage, the special construction scheme design of the support system should be done to make the support system horizontal and vertical, to ensure its overall stability and anti-overturning resistance, and the installation foundation of the wheel buckle scaffold must be tamped and leveled and concrete hardening measures should be taken. After the erection of the frame body is completed, enough scissor braces should be added, and enough horizontal tie rods should be added at the distance between the jacking support and the cross bar of the frame body 300-500mm, so that the overall stability can be reliably guaranteed.

1. Wheel-buckle scaffolding is produced with reference to the JGJ231-2010 standard issued by the Ministry of Housing and Urban-Rural Development, which is a new type of in-line steel pipe scaffold with self-locking function, the main components are vertical rods and cross bars, and the structure of the buckle nodes is reasonable, and the axial force transmission of the vertical rod makes the overall structure of the scaffold in three-dimensional space have high strength, and can effectively improve the overall stability and safety of the scaffolding.

2. Wheel-buckle scaffold is a new type of building support system derived from disk-buckle scaffolding. Different from disc buckle scaffolding, it has the characteristics of rapid dismantling, labor-saving, simple structure, stable and reliable, strong versatility, large bearing capacity, safety and efficiency, not easy to lose, easy to manage, easy to transport, etc.

The erection of wheel-buckle scaffolding refers to the national standard GB24911-2010.

Raw material composition of wheel buckle scaffolding formwork: the speed of wheel buckle scaffolding is 8-10 times that of ordinary steel pipe fasteners, and 2-4 times that of bowl buckle scaffolding, gradually replacing bowl buckle scaffolding.

Safety technical specifications for fastener-type steel pipe scaffolding for building construction.

jgj130-2011

Disc scaffolding, also known as disc scaffolding, is not the same type as wheel buckle scaffolding.

The difference between the two: 1. The advanced technology is different. Disc buckle scaffolding is the international mainstream scaffolding connection method, mainly used in European and American countries and regions, and is an upgraded product of scaffolding; Whereas, wheel-type scaffolding belongs to scaffolding with general performance.

2. The materials used are different. Wheel-buckle scaffolding is generally made of carbon steel (national standard Q235) material; The main materials of disc buckle scaffolding are all made of low-alloy structural steel (national standard Q345B), which is twice the strength of ordinary carbon steel pipe (national standard Q235) of traditional scaffolding.

3. The connection method is different. The wheel-buckle scaffold is connected by a vertical rod, which is a coaxial socket, and the node is connected in the frame plane; The disc buckle scaffold adopts a bolt-type connection method.

Wheel buckle scaffolding and disc buckle scaffolding are both improved on the basis of steel pipe fasteners.

Wheel buckle scaffold is a simplified version of disc buckle scaffolding, mainly in the pole welded to undertake the flower plate from 8 holes to 4 holes, you remember that 4 holes are wheel buckles, 8 holes are disc buckles.

The installation method is different, the wheel buckle type is safer, and the disc buckle type installation speed is faster. Choose according to your needs during construction.

Wheel buckle scaffold and disc buckle scaffold is not the same kind of product, the wheel buckle scaffold has 4 holes, the disc of disc buckle scaffold is 8 holes, the following is the ** provided by disc buckle scaffold manufacturers.

It's not the same. There is a difference in the part of the mechanism.

Independent high formwork height requirements: for the long strip independent high formwork, the ratio of the total height of the frame body to the width of the frame body h b should not be greater than 3.

The inner support step distance requirements of the wheel buckle scaffolding: the step distance should not be exceeded when the erection height is not more than 8 meters, and the step distance should not be exceeded when the erection height is more than 8 meters.

Adjustable base requirements: the exposed length of the adjustable base adjustment screw rod is not more than 300mm, and the height of the bottom horizontal rod of the sweeping rod from the ground should not be greater than 550mm.

Adjustable bracket requirements: The exposed length of the screw rod of the adjustable bracket is strictly prohibited to exceed 400mm, and the length of the bracket inserted into the vertical rod or double-channel steel joist shall not be less than 150mm.

The step distance and span requirements of the double-row outer scaffolding: the step distance should be 2m, the longitudinal distance of the vertical rod should be or, and it should not be greater than, and the horizontal distance of the vertical rod should be taken or.

Height requirements for continuous erection of double-row outer scaffolding: should not be greater than 24 meters. Pickpocket.

For each step of the horizontal rod layer of the double-row scaffolding, when the hookless steel scaffold board strengthens the stiffness of the horizontal layer: horizontal oblique rods should be set every 5 spans.

About the requirements of the connecting wall: the connection point between the connecting wall and the frame body should not be greater than 300mm.

Arrangement requirements for the cable-stayed rod of the wheel-buckled scaffolding: within 24 meters of the allowable erection height required by the specification, a vertical cable-stayed rod should be set up along the outside of the frame body for every 5 spans and each layer or a fastener steel pipe scissor brace should be set between every 5 spans.

Specifications for the use of wheel-buckled scaffolding:

Specification 1: Before building the wheel buckle scaffolding, we must first investigate the site, if the soil on the ground is loose, then we should first tamp the ground and then build the scaffolding, and then we can build according to the original design plan.

Specification 2: If the surface of the wheel buckle scaffold is damaged or there is a vertical bending of the pants, we must replace these scaffolds in time, if you continue to use such scaffolding, the probability of accidents is very large.

Specification 3: There are many scaffolds that need some parts to be used with them, so we are required to test the parts of the scaffolding that you know how to use the specifications of Huda scaffolding, and check whether the connection between them is fastened after the construction is completed.