256HC Mast SectionThe number of typhoons is particularly high this year, what precautions should be taken by tower cranes to strengthen early warning
the number of typhoons this year is quite high, and it has already entered winter today, the National Weather Service also issues frequent typhoon warnings. I stand for typhoon prevention measures in the summer generally issued more, this year more typhoons, it is stressed that the next typhoon, tower crane should do what precautions. Everyone knows the power of a typhoon. It can cause serious damage to high-rise buildings wherever it goes. Tens of meters or even hundreds of meters high tower crane of course can not be spared, then, when the typhoon comes, the tower crane should do what precautions? The safety precautions should be taken by the Tower Crane: (1) if the jack-up tower crane has an attachment device, and the free height above the top attachment height exceeds the design height specified in the manual, two steel wire ropes should be installed in the direction of the building.
256HC Mast Section
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(2) if the jack-up tower crane is not attached, but has reached the maximum independent height of the Product requirements document, four diagonal cables should be installed. (3) one-time erection of non-self-lifting tower crane, should set up four steel wire rope diagonal tie. (4) the steel wire rope above 15 shall be used for the tie, and the tie point shall be located at the root of the first standard section below the turntable. The inside of the Standard Section at the tie point shall be supported by a wooden square larger than the width of the angle steel of the standard section, so as to avoid pulling the steel structure of the Tower Body; The angle between the four tie ropes and the tower body shall be the same, and shall be controlled at 45. ~ 60. The steel wire rope shall be anchored by ground anchors or by connections with the concrete structure of the building which has reached the design strength. The steel wire rope shall be adjusted with left and right wire hooks so as to make the steel wire rope moderately loose and tight to ensure that the tower is in a vertical state. (5) where there are hanging objects such as signs and banners on the Tower Body, they shall be removed immediately; where there are easy-to-drop objects on the tower body, they shall be removed immediately. (6) the bolts of the tower body must be completely fastened and the attachment devices of the tower body should be fully checked to ensure that there is no loosening, no welding and no deformation. (7) it is strictly forbidden to fix the front and rear arms of the tower crane to ensure free rotation. The lightning protection facilities of tower crane must be kept intact and effective, and the power supply line of tower crane must be cut off. In the event of a typhoon, all temporary brick dormitories and those with potential safety hazards must be completely evacuated from a safe place near the foundation pit. The temporary accommodation personnel of the brick retaining wall and the advertisement board must be completely evacuated; once the tower crane collapses and can endanger the temporary construction personnel must be completely evacuated.
