by Interpreting the Process Flow, Key Operating Points, and Quality Requirements of NPC Component Hoisting Construction (NPC Component – NewPrefabricatedConcrete New Prefabricated Assembly Technology) · NPC Shear Wall Component Hoisting Construction Process Flow: Wall Panel Hoisting in Place → Support → Correction → Support Reinforcement → Grouting Anchor Pipe Grouting → Wall Panel Connection Joint Grouting Prefabricated Shear Wall Component Hoisting Construction Process: 1.
Vertical component hoisting should adopt slow lifting, fast lifting Slow release operation mode.
2.
Maintain a 20mm gap between the bottom of the vertical component and the floor to ensure the flow of grouting material; The gaps are filled with pad iron with different thicknesses of 1-10mm to ensure that the vertical components are installed in place and meet the design elevation.
3.
Before lifting vertical components, check whether the lifting rings inside the embedded components are intact, and whether the specifications, models, and positions are correct.
During the trial lifting of the components, the distance from the ground should not be greater than 0.5m.
The lifting speed should be increased step by step and should not exceed the gear limit.
When lifting and lowering the components, tie the cable and wind rope at the root of the components to control their rotation and ensure that the components are in place smoothly.
4.
When the component is about 1.5m away from the installation surface, it should be adjusted slowly to adjust the component to the installation position; The reserved joint bars on the floor correspond to the reserved grouting pipes for the components one by one, and after all are accurately inserted into the grouting pipes, the components slowly descend; When the component is about 30cm away from the floor, the installation personnel should assist in gently pushing the component or use a crowbar to preliminarily locate according to the positioning line; 5.
When the vertical components are in place, they should be basically positioned according to the axis, component edge lines, and measurement control lines.
The adjustable diagonal support connecting plate should be used to temporarily fix the vertical component floor through bolts and nuts.
After the vertical component is kept basically perpendicular to the floor, the hook should be removed.
6.
According to the vertical component plane division diagram and lifting diagram, the vertical components should be lifted in place in sequence.
After the vertical components are in place, diagonal braces should be installed immediately.
Each vertical component should be fixed with no less than 2 diagonal braces.
The diagonal braces should be installed on the same side of the vertical components, and the horizontal angle between the diagonal braces and the floor should not be less than 60 °.
1) Clean the pre embedded tension bolts on the ground, remove the plastic film and splashed cement slurry wrapped on the surface, and expose the connecting threads; Clean the sleeve on the component and install the screw.
Be careful not to tighten the screw to the end, with a gap of about 30mm between it and the surface of the component; 2) Installation of diagonal support: Place the upper and lower pads on the support rod along the direction of the gap on the component and the bolts on the ground respectively
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