吊桥折叠式上塔式起重机通道与爬架同步提升技术在施工现场中的应用

THE APPLICATION OF SYNCHRONOUS LIFTING TECHNOLOGY FOR THE CHANNEL AND CLIMBING FRAME OF THE FOLDING TOWER CRANE WITH SUSPENSION BRIDGE IN THE CONSTRUCTION SITE

吊桥折叠式上塔式起重机通道与爬架同步提升技术适用于外架采用全钢式附着升降脚手架(简称爬架)的高层、超高层建筑与塔式起重机之间的吊桥折叠式上塔式起重机通道。首先通过方管焊接形成通道整体受力框架,并在框架两侧通过方管焊接形成防护栏杆,然后在整体受力框架上焊接冲孔防护网片形成吊桥折叠式上塔式起重机通道。整体定型化吊桥折叠式上塔式起重机通道吊装至爬架第四步走道板位置后,通道尾部与爬架立杆龙骨采用螺栓连接,通道中部及前端分别焊接有圆钢吊环,钢丝绳一端与通道圆钢吊环连接,钢丝绳另一端与爬架导轨立杆相连接。每当施工完一层,由塔式起重机司机将通道最前端的翻板收回,并将靠近爬架处的防护门上锁,全钢附着升降脚手架带动整体定型化吊桥折叠式上塔式起重机通道同步提升。

The synchronous lifting technology of folding tower crane passage and climbing frame is suitable for the high-rise lifting bridge with all-steel attached lifting scaffolding(climbing frame)and super high-rise building and tower crane.First,the overall force frame of the channel is formed through the square pipe welding,and the protective railing is formed on both sides of the frame.Then,the punching protective mesh is welded on the overall stressed frame to form the folding tower crane channel of the crane bridge.After the passage of the folding tower crane of the overall fixed suspension bridge is lifted to the position of the fourth step of the climbing frame,the tail of the channel is connected with the climbing pole keel.In the middle and front of the channel are welded with the round steel lifting ring.One end of the wire rope is connected with the round steel lifting ring of the channel,and the other end of the wire rope is connected with the guide rod of the climbing rail.After the first floor is completed,the tower crane driver will withdraw the turning plate at the front end of the channel and lock the protective door near the climbing frame.The whole steel is attached to the lifting scaffold to drive the overall fixed suspension bridge to upgrade the folding tower crane channel synchronously.