by Click the blue word above to pay attention and send you a high-quality material for free ▪ The tower crane shall be selected according to the weight of PC components and the relative position between the tower crane and each building, combined with the analysis of the lifting capacity of the tower crane, and the appropriate tower crane model shall be selected according to the lifting capacity of the tower crane is not less than 1.25 times of the component weight.
▪ PC transportation road layout the road layout of the construction site shall meet the traffic requirements of PC component transportation vehicles, that is, the road width shall not be less than 6m, the turning radius shall not be less than 9m, and the weight of transportation vehicles borne by the road shall not be less than 45t.
For off-site transportation of components, the model of component transportation vehicle and component placement form shall be determined according to the transportation route of PC components and the shape and size of PC components.
▪ Before unloading, the weight certificate, appearance, size, position of embedded parts and reserved holes of components shall be accepted.
After passing the acceptance, the spreader shall be installed and lifted to the storage yard.
The included angle between the spreader rope and the horizontal plane of components shall not be less than 60 degrees.
▪ Before lifting to the storage yard for standby hook unloading, place square timber under the component position, fix the component with wooden plug, unload the hook, and continue to lift other components.
The composite beams shall not be stacked, and shall be calculated through the ground bearing capacity of the storage yard.
▪ PC component hoisting trial hoisting shall be carried out before formal hoisting of components to check whether the braking performance of tower crane and the working performance of sling sling sling meet the hoisting requirements.
The hoisting shall follow the principle of “slow lifting, fast lifting and slow release”.
When the components are hoisted to 1m high on the construction floor, stop landing, and the installation workers shall use the cable wind rope to straighten the position, slowly land and observe the counterpart.
▪ Before hoisting the composite beam, check whether the life rope and safety belt are fixed in place.
First hoist the composite beam to a height of 50cm from the beam bottom plate, adjust the angle of the beam, and accurately insert the beam reinforcement into the column reinforcement.
▪ Before hoisting the laminated plate, clean the platform, adjust the direction of the laminated plate, slowly place the laminated plate in place, and properly adjust it with a crowbar.
▪ The platform shall be cleaned before stair hoisting, and then the platform shall be leveled with mortar.
During stair hoisting, the installation angle shall be controlled and the hole shall be installed..
