600 thousand.
7.
The distribution reinforcement shall be poured from 9 concrete below the truss reinforcement of the laminated plate.
The laminated plate has through cracks and is not received and discarded: the length of the reserved reinforcement of the laminated plate is measured: the size of the laminated plate is compared with the nameplate to check whether it is consistent: the lock nut is added and blocked in four directions of the embedded wire box, and check whether the height of the lock nut from the plate surface meets the construction requirements: each laminated plate has a identification nameplate, Comparison with the drawing: painting of four lifting points of the laminated plate, painting of installation direction identification: painting of installation direction identification of the laminated plate in the drawing: 2.
Each building is required to send daily maintenance photos to the work group.
At the junction of the negative reinforcement corner and the negative reinforcement junction of the slab, the distribution reinforcement is bound under the truss reinforcement to avoid the reduction of the protective layer caused by the intersection of multi-layer reinforcement and affecting the flatness of the cast-in-situ surface.
When lifting the laminated plate, the bending moment caused by self weight in the non prestressed direction shall be reduced as much as possible.
Stacking of the laminated plate on site, laying I-beam under the laminated plate to ensure the level: place the skid, the upper and lower positions of the skid are consistent, ensure that the vertical stress points are the same, and prevent cracks caused by uneven stress: the placement height of the laminated plate shall be unified into six layers through communication with the component factory, Prevent cracks caused by excessive storage on site: 3.
Official account of the general atlas, project manager, technician and builder assembly, a platform for construction engineers to provide learning and communication for construction technology.
When it is put down, it shall be stopped stably and slowly, and it is strictly prohibited to put it quickly and violently, so as to avoid the vibration and fracture of the plate surface caused by excessive impact force.
The sponge adhesive strip at the plate and strip position is not pasted in place.
The steel shoulder pole lifting frame shall be used for lifting, and the four lifting points shall be stressed evenly to ensure the smooth lifting of components, as shown in the figure below.
Before the concrete pouring, it shall be watered and wetted in advance to avoid affecting the workability of the concrete due to the water absorption of the laminated plate.
When in place, the laminated plate shall be installed vertically from the top to the bottom, and a slight pause shall be made at 20cm above the operation layer.
The pasting of the sponge rubber strip.
3.
After the installation of laminated plate, there are reserved reinforcement of laminated plate on both sides of the beam.
After the hoisting of the laminated plate is completed, the formwork support shall be re jacked for the second time.
11.
Common problems and treatment common problems: slurry leakage on both sides of cast-in-situ slab strip.
The binding of plate reinforcement and the embedding of line pipe in the line box go under the laminated plate truss to avoid the trampling of line pipe, protect the line pipe and ensure that the line pipe is not exposed after the completion of ground pouring.
In order to avoid this problem, strengthen the inspection during the hoisting and installation of the laminated plate: 1.
Mobilization and acceptance criteria of laminated plates: the thickness of laminated plates is 60mm, the concrete strength grade is C30, and the self weight is about 150kg / γ‘; The bottom surface is flat and smooth with uniform color, and is equipped with reserved holes and embedded parts.
2.
3.
When the formwork is fully paved, the side formwork is not fully paved and supported, and the sponge adhesive strip is pasted around the laminated plate to prevent slurry leakage; The side formwork is about 500 away from both sides: 4.
The laminated board itself is warped and the bottom of the board is uneven.
After the formwork is removed, the finished product shall be inspected to check the quality of concrete pouring and forming, and there shall be no slurry leakage.
The construction personnel shall hold the floor to adjust the direction, align the side line of the plate with the placement position line on the wall, and pay attention to avoid the fight between the reserved reinforcement on the laminated plate and the reinforcement on the wall.
When lifting, try to lift it first, stop it 50 cm from the ground, check the stress of steel wire rope and hook, keep the laminated plate horizontal, and then lift it over the operation layer.
Other reasons: 1.
Strengthen the formwork support and reinforcement at the position of plate and strip.
The position deviation of the sponge rubber strip and the gap between the laminated plate and the formwork.
10.
2.
Main causes of slurry leakage: 1.
Ziliaotuijian.
As the cast-in-situ surface course of concrete roof is only 7cm, watering maintenance needs to be strengthened.
The gap between the laminated plate and the formwork is large, and the rubber strip cannot ensure all sealing.
8.
Quality control of main nodes in the construction process 1.
How is this new process constructed? What points need to be controlled on site? Taking the project of Jining jiujulong construction company as an example, this paper shares the construction process and node quality control of laminated plate with you.
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After the hoisting of the laminated plate is completed, fine adjustment is made, and the sponge rubber strip is damaged due to human prying.
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Special spreader for hoisting laminated plate 5 formwork support 6 beam reinforcement binding reinforcement binding is different from the original.
The hoisting shall be stopped when the wind is above level 5.
2.
Formwork installation, full laying of roof formwork and laying of side formwork have no impact on the construction finished products, mainly the flatness of formwork and reinforcement support in place.
The formwork support and reinforcement at the plate strip position are not in place, resulting in formwork deformation and slurry leakage after concrete pouring.
In view of the slurry leakage, timely correct the deviation and correct the construction method.
