What is the unloading platform construction plan... Solve

Cantilevered discharge platform.

Design size: steel platform length, width 2m, primary and secondary beams are made of 16 I-beams.

and 18 channel steel production, the wire rope is made of 20mm diameter, and the specific size can be customized.

Allowable load: construction live load 2kN, concentrated load 10kN

1) In principle, it is strictly forbidden to use the floor-mounted unloading platform, and actively promote the use of section steel.

Tool-type and stereotyped cantilevered unloading platform made of materials;

2) The cantilever unloading platform should be more than 16 I-beam or channel steel as the main beam and secondary beam, and the thickness of the wooden board is not less than 50mm, and the wooden board and the cantilever beam are bolted.

The fixed, cantilevered unloading platform must be rested on the building and must not be used with scaffolding.

connection, no forward and backward movement and left and right shaking phenomenon;

3) The part of the cantilever beam extending to the building of the cantilever unloading platform shall not be less than 1 meter, and the part of the building structure fixed with steel bars or bolts of not less than 16 shall not be less than 2; The cantilever beam on both sides should be used respectively with 2 more than 14 wire ropes for lifting and unloading, and the upper part of the wire rope tie point connector must be fixed on the building structure, and it is strictly forbidden to be set up on construction equipment such as masonry wall or scaffolding; The wire rope of the building should be lined with soft cushions, and the outer mouth of the unloading platform should be slightly higher than the inner mouth, and the installation should be stable;

4) The unloading platform must be set up in accordance with the requirements of the edge operation of the protective railing and foot guard, the height of the upper rod, the height of the lower rod, the height of the foot guard is not less than 18cm, and the railing must be hung from top to bottom with a dense safety net;

5) The unloading and answering platform should be provided with 4 collars that have been checked, and the rings should be made of Q235 steel bars. (The lifting ring should be embedded in the main structure, and its embedded depth and anchorage length.)

In line with the specified value, the net height of the lifting ring does not exceed 5-6cm of the concrete surface, and the direction of the lifting ring is perpendicular to the floor);

6) The angle between the wire rope of the unloading platform and the horizontal cantilever beam should be 45°-60°. When the wire rope of the unloading platform is fixed with a rope clamp, there shall be no less than 3 fixed rope clamps, and the length of the last rope clamp from the rope end shall not be less than 140mm. A rope bend should be set between the last rope card and the second rope card.

The rope clamp saddle (splint) should be on the side of the wire rope when it is loaded, and the "U" bolt should be at the tail end of the wire rope, and should not be staggered. After the rope clamp is fixed for the first time, it should be tightened again after the wire rope is stressed, and it should be tightened to make the height of the diameter of the two ropes pressure bench lift such as flat 1 3;

7) Hang the unified weight limit sign of the branch on the platform: mark the tonnage of the limited load and the person responsible for acceptance, maintenance and installation, and it is strictly forbidden to overload or stack materials for a long time, and hang with the pile; The height of stacked materials shall not exceed the height of the platform guardrail; The number of workers is limited to 1-2, and it is strictly forbidden to use the platform as a rest platform; The total weight of construction personnel and materials on the platform is strictly forbidden to exceed the allowable load of the design;

8) The upper entrance and exit of the unloading platform must be protected by hard protection that meets the requirements;

9) After the unloading platform is erected, it must be accepted by construction technicians and full-time safety management personnel, confirm that it meets the design requirements, and sign the opinion, and go through the acceptance procedures before it can be put into use.

What is the specific content of the regulations on the erection of the unloading platform, the following Zhongda Consulting will answer for you.

1. The unloading platform should be designed and calculated and a special construction plan should be prepared.

2. The unloading platform should be erected in accordance with the special construction plan. The unloading platform should have an independent support system, and it is strictly forbidden to connect with scaffolding, formwork, vertical transportation machinery, etc.

3. The unloading platform should be laid with wooden boards with a pin thickness of more than 40mm, and equipped with anti-skid strips.

4. The external scaffold lifting unloading platform should be made stereotyped and tooled, and the embedded steel bar lifting ring should be reliably pulled through 4 matching steel wire cables and the embedded steel bar lifting ring, which is a self-contained stress system, and the embedded steel bar lifting ring should ensure the anchorage length, and the concrete strength should reach 100%.It is strictly forbidden to use fastener-type steel pipes to erect a cantilever unloading platform.

5. The floor-mounted unloading platform can be erected by steel pipes, but it must be erected separately and become a force system, and it is strictly forbidden to mix and match with scaffolding. The foundation must be firm and reliable, and the bearing capacity should meet the requirements of use.

6. The unloading platform must be equipped with load limit signs and safety warning signs.

7. The edge of the unloading platform should be protected in place.

The installation method of the unloading platform is pro! Hello, I am glad to answer for you<> the installation method of the pro-unloading platform is as follows: 1. In principle, the construction site is strictly forbidden to use the floor-mounted unloading platform, and actively promote the use of tool-type and stereotyped cantilever unloading platform made of section steel materials.

2. The cantilever unloading platform should be made of I-beam or channel steel above No. 16 as the main beam and secondary beam, and the wooden board with a thickness of not less than 50mm should be laid on it, and the wooden board should be fixed with the cantilever beam with bolts. The cantilevered unloading platform must be rested on the building, and must not be connected with the scaffolding, and must not move back and forth and shake left and right. 3. The part of the cantilever beam extending to the building of Jingfeng standardized cantilever unloading platform shall not be less than 1 meter, and the part fixed on the structure of the building shall not be less than 2 with steel bars or bolts of not less than 16; The cantilever beam on both sides should be used respectively with 2 more than 14 wire ropes for lifting and unloading, and the upper part of the wire rope tie point connector must be fixed on the building structure, and it is strictly forbidden to be set up on construction equipment such as masonry wall or scaffolding; The wire rope of the building should be lined with soft cushions, and the outer mouth of the unloading platform should be slightly higher than the inner mouth, and the installation should be stable;

4. The unloading platform must be set up in accordance with the requirements of the edge operation, the height of the upper rod is, the height of the lower rod is, the height of the foot guard is not less than 18cm, and the railing must be hung from top to bottom with a dense safety net. 5. The unloading platform should be provided with 4 checked lifting rings, and the lifting rings should be made of Q235 steel bars. (The ring should be embedded in the main structure, its embedded depth and anchorage length conform to the specified value, the net height of the ring does not exceed 5--6cm on the concrete surface, and the direction of the ring is perpendicular to the floor).

Hope mine can help you <>

Do you have any other questions for advice?

According to the "Technical Code for Safety of Work at Height in Building Construction" JGJ80-1991, the unloading platform at the construction site shall comply with the following provisions:

1. The design should be carried out according to the current corresponding specifications, and the structural structure should be able to prevent left and right shaking, and the calculation book and drawings can be compiled into the construction design;

2. The fulcrum and upper tie point of the cherry shelf should be located on the building and should not be set up on construction equipment such as scaffolding;

3. The structure of the cable-stayed rod or wire rope should be set up on both sides of the front and rear lanes, and each of the two lanes should be calculated as a single lane force;

4. 4 calculated lifting rings should also be set up, and the clamp ring should be used when lifting the platform, and the hook should not be directly hooked to hang the ring, and the lifting ring should be made of Class A No. 3 boiling steel;

5. When the steel platform is installed, the wire rope should be hooked to trailer, and when other methods are taken, the clips of the clamp head shall not be less than three; And the wire rope of the acute angle of the building should be lined with soft cushion, and the outer mouth of the steel platform should be slightly higher than the inner mouth;

6. The left and right sides of the steel platform are equipped with fixed protective railings, in addition, when the steel platform is hoisted, it is necessary to wait for the beam support point to be welded and fixed, connect the wire rope, after the adjustment is completed, after inspection and acceptance, the roller bird heavy lifting ring can be loosened and operated up and down;

7. Finally, when the steel platform is in use, a special person should be set up to inspect it, and if it is found that the wire rope is corroded or damaged, it should be replaced in time, and the weld should be replaced in time.

The unloading platform is usually a temporary operating platform (frame) erected at the construction site for material turnover, which can generally be divided into mobile unloading platform, cantilever unloading platform, landing unloading platform, etc., among which the section steel cantilever unloading platform is the most common and most commonly used unloading platform in engineering construction. In recent years, the collapse of the unloading platform has occurred frequently, and its production requirements and use management should be focused on and strictly required.

Before construction, the construction load of the platform, beam, steel cable, lifting ring, pressure ring, embedded parts, welds and building structures should be calculated, and the node details should be drawn, and then a reasonable and effective unloading platform construction plan should be formulated according to the construction site status, normative document standards, specifications and drawings, etc., and the construction plan should also include the construction plan, construction technology, labor plan, construction safety assurance measures, etc., and the follow-up construction can only be carried out after the plan is reported and approved.

The following introduces the precautions for the construction of the unloading platform from the key points of the unloading platform and the use and management of the unloading platform.

Key points for making the unloading platform.

1) When making the unloading platform, it must be carried out in strict accordance with the design, and it is not allowed to use small-sized components instead of large-scale components.

2) When using the snap ring to connect the wire rope, a safety bend must be set, and the angle between the wire rope and the horizontal steel beam should be 45 ° 60 °.

3) Before welding and connecting the angle steel or steel plate, the channel steel should be straightened, and bending and twisting are not allowed, if the channel steel is not straight, twisted or bent, it should be immediately straightened by cold working, and oxygen, acetylene, etc. should not be used for thermal processing.

4) Before the load-bearing frame of the unloading platform is welded, the main beam, the secondary beam and the contact beam should be processed and formed, and then spot welded and fixed, and then welded after the bolt connection is confirmed, and the welding slag should be knocked out after the weld is basically cooled during welding.

5) The upper entrance and exit of the unloading platform must be protected in accordance with the requirements, and the unloading platform must be qualified after the experience is qualified before it can be put into use.

Management of the use of the unloading platform.

1) When the unloading platform is installed, a tower crane should be used to lift it to the installation position, and the channel steel of the load-bearing beam should be penetrated into the floor, and the hole with a diameter of 18mm should be drilled with an impact electric hammer at the installation position, and then fixed with a piercing screw and a pressing plate.

2) should be added at the construction site to protect the shed, fence, set up warning and warning signs, and indicate the allowable load value on the unloading platform, the total weight of personnel and materials on the platform is strictly forbidden to exceed the allowable load design.

3) When the unloading guessing platform is used, there should be a special person responsible for inspection, and if the wire rope is found to be rusted and damaged, it should be replaced in time; If the weld is desoldered, it should be repaired in time.

4) The wire rope clip should be wrapped in plastic or brushed with oil for maintenance, and the garbage and sundries on the unloading platform should be cleaned up, and the unloading platform is strictly forbidden to stack materials.

5) The dismantling and moving operation of the unloading platform should be carried out according to the process of "first erecting and then dismantling, and then dismantling first", and the operation process should be coordinated and coordinated, and it is strictly forbidden for a single person to dismantle heavier rods and other dangerous operations, in addition, the dismantled steel pipes and components must be removed from the unloading platform in time.