Construction and Maintenance of Cantilevered Materials platforms

[Summary description] The cantilever Materials platforms is generally used as the stacking and lifting function of the tower crane to hoist and transport materials. Check the railings and scaffolding of the cantilevered Materials platforms. 1. Written technical disclosure and pre-class education should be done before installation. Operators must be trained before they can work; 2. When lifting, the four steel wire ropes should be fixed on the four rings of the steel platform with shackles respectively. Tighten the threads. A warning line should be set up during installation to prevent falling objects from hurting people; 3. Only when the concrete strength of the upper layer (pre-embedded hook part) reaches 80% of the design strength, the cantilevered Materials platforms can be installed;

  The cantilevered Materials platforms is generally used as the stacking and lifting function of the tower crane to hoist and transport materials.

Check the railings and scaffolding of the cantilevered Materials platforms.

1. Before installation, written technical disclosure and pre-class education should be done, and operators must be trained before they can work;

2. When lifting, the four steel wire ropes should be fixed on the four rings of the steel platform with shackles respectively, and the threads should be tightened before lifting. A warning line should be set up during installation to prevent falling objects from hurting people;

3. Only when the concrete strength of the upper layer (pre-embedded hook part) reaches 80% of the design strength, the cantilevered Materials platforms can be installed;

4. When the cantilever Materials platforms is installed and positioned, its top and bottom shall not be on the same vertical plane, and a certain distance shall be maintained;

5. Tower crane for installation of cantilever Materials platforms; unified command from top to bottom. After the installation of the platform is completed, it can only be put into use after the timely inspection and acceptance by the personnel of the relevant departments. Pay attention to the following points during installation:

(1) In strict accordance with the design drawings of the cantilever discharge platform, the thickness, width and length of the welding seam meet the requirements, and the welding seam has no quality defects such as blisters, slag inclusions, and penetration;

(2) When the platform is installed, the outer port should be 5 to 10 cm higher than the inner port;

(3) The best angle between the wire rope and the horizontal steel beam is 45-60 degrees;

(4) The tensile anchor ring in the beam can only be used when the concrete reaches more than 75% of the design strength;

(5) Installation and dismantling personnel must hold certificates and be in good physical condition. After the technical disclosure, it is necessary to master the characteristics of the Materials platforms of this project and the method of erection and dismantling;

(6) During erection and demolition, special personnel should be assigned to direct and take care, demarcate warning areas, set up warning signs, and prohibit non- erection and demolition personnel from entering the construction area.

Inspection, acceptance and daily management of cantilever Materials platforms:

1. Acceptance process:

The team self-inspected and reported to the general contractor to check the project department's safety department, construction department, and engineering department for joint acceptance and acceptance and put into use.

2. Rules of use:

(1) The acceptance and daily inspection of the cantilever Materials platforms shall be carried out in accordance with the following regulations, and it can be put into use or continue to be used after the inspection is passed.

(2) The construction and use of the cantilever Materials platforms shall be in charge of a special person, and safety supervision and inspection personnel shall be set up, and the person in charge of safety shall be responsible for daily management and inspection to ensure that the use conforms to the design and relevant regulations;

(3) When working, workers in each shift should first check whether there are any problems affecting safe operation, and then start work after they are eliminated and resolved. When unsafe conditions and signs are found in the operation, the operation should be stopped immediately for inspection, and the normal operation can be resumed after the problem is solved.

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