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During the hoisting of precast PC components, according to previous experience, it is found that deformation problems are common.

Transportation and storage yard (1) during the transportation of PC components of precast buildings, the most common means of transportation is low-speed flat car, so as to ensure that the components are placed horizontally on the floor and try to avoid any damage to the components during transportation.

(3) fix each structural position to ensure its reliability and stability in later use.

In the specific connection process, the construction personnel shall operate in strict accordance with the construction quality requirements and technical standards to ensure the compactness and strength of the concrete in the node area.

In order to ensure the safety of the construction process and the final construction quality, the construction personnel must select appropriate application tools according to the actual situation to ensure the stability of PC components, At present, the most common operation methods in China are fixed angle code and diagonal brace fixation.

In order to effectively reduce the probability of this adverse phenomenon, the staff are required to ensure that the steel shoulder pole is in the vertical direction during hoisting and place the components horizontally to avoid damaging the grass position.

When connecting PC wallboard, we must ensure the scientificity and rationality of embedded iron parts and lower wallboard.

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Before starting the fixing operation, the staff should also make appropriate adjustments to the height and horizontal accuracy of PC components.

When stacking PC components, the symmetrical method is generally selected, which is convenient for the orderly development of later construction operations on the basis of ensuring the safety of component stacking process.

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The scientific and reasonable selection of the positioning position can lay a solid foundation for the convenience of the later construction operation process, better ensure the final construction quality of the construction project and shorten the construction period to a certain extent.

The staff shall also set certain sleepers on the transportation frame and fix them in strict accordance with the transportation requirements of PC components to ensure the integrity of components during transportation.

(2) after PC components enter the construction site, tower crane equipment shall be used during transfer, and PC components shall be stacked in an orderly manner.

Component hoisting technology (1) install it at both ends of the wallboard and ensure the symmetry of the positioning positions at both ends.

Component support and fixation # after the hoisting of PC components in precast buildings, other relevant accessories have not been implemented, and there are still some deficiencies in the overall stability of components.

The connection treatment is generally completed by welding or bolt operation.

When the PC component is hoisted to a certain position, a certain amount of manual cooperation is also required.

If the floor is large, it is best to choose an adjustable mold for hoisting, so as to ensure the balanced stress of the PC component and avoid the stress concentration damaging the component as much as possible.

(2) pour cement slurry with very good strength into the connecting sleeve hole.

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Connection technology of components # after the hoisting, support fixing and position correction of PC component formwork of precast building are completed, the reinforcement reserved at the end needs to be effectively connected, and the sleeve should be thoroughly cleaned before the connection treatment, The PC formwork and the cast-in-situ main beam are connected together at the node position through cast-in-situ concrete.

In order to better avoid overturning accidents during stacking, the support shall also be used reasonably, and the stiffness of the support shall meet a certain strength.

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In order to make the PC component structure have better seismic effect and integrity, the operator should also make rational use of the inclined angle at the upper end of the U-shaped plate to ensure that the precast wallboard can reach the specified position.

(this article is from the Internet.

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