Housing construction cantilevered unloading platform construction program pre-embedded U-ring correct operation

U-type ring selection of 20 diameter round steel, anchored into the beam not less than 15d, the end of the curved hook, must be placed in the hoop bar, which has a main bar tie.

The ring arrangement position must be perpendicular to the unloading platform, so that the wire rope tie can play a good state of stress.

The end of the ring is made of 135? bending hooks, the upper bending split is 40-45?, and the horizontal distance between the two is not less than 70mm.

Expanded information:

A, the precautions of the buried parts:

1, in the pre-buried bolts and pre-buried parts before the installation of the construction team by the technician to carry out a detailed briefing, and check the specifications of the bolts and pre-buried parts, the number, diameter.

2, when pouring concrete, the vibrating rod shall not collide with the fixing frame, and it is not allowed to pour concrete against the bolts and embedded parts.

3. After the concrete is poured, the actual value and deviation of the bolts will be remeasured in time and recorded, and measures will be taken to adjust the bolts beyond the permitted deviation until the design requirements are met.

4, in order to prevent pollution or corrosion, before and after the concrete pouring, with oil or other materials to wrap the nuts of the foot bolt.

5, bolts and embedded parts in the concrete before pouring should be supervisors and quality personnel to check and accept, confirm the qualified signature before pouring concrete.

Second, unloading platform precautions

1, unloading platform production should be carried out by professional welders.

2, the required weld shall not have de-welding, leakage welding, weld should be full.

3, the platform on the board should be full, and tied with 8 lead wire.

4, the height of the protective railing should not be less than 1.5 meters, and the inner side should be hanging mesh safety net.

5, the anchor buckle of the wire rope should meet the specification requirements.

6, the material platform should be installed before checking the reserved anchor ring and the structure of the connection is reliable, whether there is a loose situation, to confirm that there is no error before installation.

7, unloading platform lifting, lifting the four wire rope should be the same length to ensure the smooth installation of the platform.

8, when lifting, the signaler should work closely with the installer to ensure safety.

9, for insurance purposes, the unloading platform should be hung on the obvious load-limiting sign, load-limiting requirements for 1.0T.

10, the first use should be done static load test, in the confirmation of the material platform is not deformed, weld no cracks, no cracks in the concrete at the anchor ring and other phenomena, and after the signatures of the relevant departments and the person in charge of the approval, before being put into use.

Baidu Encyclopedia-U-bolt

Baidu Encyclopedia-Unloading Platform