Design And Construction Research Of Support System With Superhigh And Great Span

With the development of the city, many kinds of special reinforcement concrete structure come into being, to satisfy the multi-function and beauty of the buildings.During the construction, great span and height of the scaffold and kinds of loads on the concrete structure bring forward many higher demands to the design of the scaffold.Tubular scaffold support is a kind of temporary structure,but the accident due to it happened occasionally resulting in serious economic loss and bad social consequence.The scaffold is connected by couplers,the quality of which are usually disqualified.In addition,there are many problems in construction management.In a word,accidents are often due to human errors. Therefore,it is very important to design scaffold structures in a standardized and correct way and it's meaningful to develop a new scaffold for grear span and height structure.The paper reviewed the development of scaffold technology in our country and introduced the classification of scaffold. Then it contrasted several mathods about the calculation of scaffold and analyzed the effective length of vertical member in different connection conditions.The codes of scaffold in different contries are also compared with the tubular scaffold code(JGJ130—2001),and it is pointed that the latter is not reasonable in lateral load.At last,the paper described the geometric dimention and construction of the new scaffold in detail. The general commercial software package of finite element analysis is used to calculate the bending rigidity and ultimate bearing capacity of the gusset.This thesis takes a typical project to study the working capacity of the scaffold.It is concluded that the new scaffold has much more capacity than the the fastner-stytle steel pipe system.