Installation method for integrally dragging cantilever beam onto platform

The invention discloses an installation method for integrally dragging a cantilever beam onto a platform, which comprises the following steps of: independently constructing a track at the tilted part in a lower slide way at the bow end of the cantilever beam; integrally constructing the cantilever beam, and sealing the track at the tilted part in the installation position of the cantilever beam in a horizontal mode; moving the cantilever beam onto a temporary slide way, and integrally dragging the cantilever beam onto the platform by utilizing a traction mechanism; and after the cantilever beam is dragged in place, dismantling the sealing component, lifting the track at the tilted part in the horizontal state to be in a tilted state by utilizing a lifting device, and fixing the track by welding. Through the method disclosed by the invention, the cantilever beam can be manufactured integrally on the land, and all devices are installed in place before the cantilever beam is folded, thereby greatly ensuring the construction integrality of the cantilever beam. A tilted slide track is flattened in advance before being dragged onto the platform, thereby being convenient for passing through a HOLDDOWN device. Simultaneously, the construction accuracy is convenient to control in integral construction of the cantilever beam. The dragging installation can shorten the construction cycle and is safe and reliable. The installation method disclosed by the invention has obvious economic benefit.