L68B1 Mast Section Anti collision measures and safety technology analysis of tower crane

09-12-2019


Tower crane anti-collision measures, tower crane anti-collision technical analysis: tower crane positioning and layout plan; anti-collision safety measures; anti-collision hazard source, risk period analysis and prevention; relevant measures when it is stopped.


L68B1 Mast Section:

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I. positioning and layout plan of tower crane:




The building height of 6 × building is 76.05m, and the independent lifting height of qtz80b m tower crane is 47m. After adopting the attached lifting system, the attached lifting height can reach 110m, which can meet the construction requirements. According to the general layout plan of the construction site and the layout plan of 5 × and 8 × building tower cranes, it is decided to adopt the combination of 2 × plan tower crane big arm length and 54m arm length. The QTZ63 Xuanlong tower crane on the North facade of the 5th building is installed, with arm length of 50m, center distance between the two tower cranes of 70m, and forearm of 54m and 50m, resulting in the intersection of the two tower cranes of 54 + 50-70 = 24m, which is dangerous to collide with each other's boom, hook and wire rope. The QTZ80 Jinkui tower crane installed in the East elevation of the 8 × building has an arm length of 54 meters, the center distance between the two tower cranes is 46 m, and the forearms of the two tower cranes are 54 m and 50 m, resulting in the intersection of the two tower cranes of 54 + 50-46 = 48 m, and there is a risk of collision with the standard section, boom, hook and wire rope. In order to ensure the normal operation of each tower crane and prevent safety accidents, anti-collision measures for tower crane are prepared according to the actual situation of the site to ensure the construction safety.




II. Anti collision safety measures:


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L68B1 Mast Section


1. When the tower crane is lifting, it is forbidden to lift the two tower cranes at the same level, and at least one standard pitch height difference shall be generated.


2. Try to avoid the simultaneous construction of two tower cranes in the intersection area.


3. All tower cranes shall regularly check whether the anti-collision lights are in good condition. During the night construction, the lighting is sufficient to facilitate the visual observation of the driver without blind area.


4. When two tower cranes are used at the same time, the interphones of the ground tower crane commander and the tower crane driver of the two tower cranes shall be on the same channel, so as to coordinate and cross use each other and prevent collision.


5. When working in the cross area, only one tower crane is allowed to be in the cross area. When one tower crane leaves the cross area, the other tower crane can enter the cross area.


6. During the cross construction, the driver shall change the amplitude of the lifted object outside the cross area, and the horizontal interval of the amplitude can only be changed after the lifted object arrives at the designated place.


7. During the construction in the cross area, the two tower cranes shall rotate counterclockwise to avoid the cross. Price of tower crane.


8. During the construction in the cross area, the steel wire ropes of the objects lifted by the two tower cranes shall be tightened to avoid the steel wire ropes of the upper tower crane colliding with the lower forearm.


9. During the construction in the crossing area, two tower cranes shall be avoided to hoist long materials at the same time.


10. When working in the cross area, two tower cranes are not allowed to work at the same time in the cross area at night.

L68B1 Mast Section:

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L68B1 Mast Section

11. When working in the cross area, it is strictly prohibited to work without command and at the same time.


12. When working in the cross area, in case of strong wind above level 4, the operation of lifting large formwork shall be stopped.


13. When hoisting the large formwork of the West unit of the 6th floor, if the reinforcement of the 5th floor needs to be hoisted, it is necessary to negotiate with the 6th floor in advance to stagger the hoisting time difference and avoid collision.


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