| Taper unidirection double cable glass curtain wall is a new kind of curtain wall form of appeared in recent years,has a strange shape,beautiful buildings,eye shot is open architecture,and more stable than single cable system has the structure system,the advantages of higher bearing capacity,can significantly reduce the material at the same time,save costs and accelerate construction,have a good prospect of engineering application.Tension control,construction for shape and glass installation is taper unidirection double cable glass curtain wall construction of the three key steps,is related to the construction method and process control method is an important construction mechanics problems,research can provide scientific and engineering reference for glass curtain wall construction.Based on nanning Wu Wei new international airport terminal engineering as the engineering background,the combination of finite element simulation and engineering monitoring method,carried out the following research work:(1)put forward the big taper unidirection double cable glass curtain wall of the tension control of the cable force and displacement of the double control method,and puts forward the corresponding cable tensioning construction method based on the forward analysis method.Combined with finite element simulation and engineering monitoring analysis show that the tensioning construction from the middle to the bilateral symmetry and can be used with cross in both ends to the middle of tensioning order,take two batches,and the two levels of levels,each divided into five small tension control method,the first level of tension to the target by 60%,the second level of tension to the target by 105%,each a small linear increasing,at the same time control cable tension and the biggest limit breaking force ratio is less than 20%,the displacement deformation control in the range of the main steel structure deformation allows,.achieve the precise control of cable force and displacement deformation,has reached the design requirements.(2)according to the characteristics of this curtain wall,make sure the double control method for the calculation process of form,and focused on the prestressed construction of cable glass curtain wall of the corresponding force control and double control method for application,the force control method and the double control method for comparative analysis of the two methods,the results verified the double control method to high precision(error is less than 5%)to meet the requirements of the design of cable force and structure configuration.At the same time,through the construction monitoring,also suggests that consistent with the results of simulation calculation.(3)install the control elements of glass,through comparing the simulation project monitoring,put forward the taper unidirection double cable glass curtain wall of glass installation of control program and method,suitable for the application of similar projects.Proposed the taper Unidirection double cable glass curtain wall of glass installation order,follow the "symmetry outfit,closed in on both sides to jump,from top to bottom"principle,namely with axial symmetrical line from either side to the middle and every other across the installation,from top to bottom level.After construction monitoring contrast design,simulation and construction errors are controlled within the scope of the permit(error is less than +/-5%),the simulation is very good to achieve the construction idea,the installation order is suitable for taper unidirection double cable glass curtain wall and other types of curtain wall lasso.Creatively adopts two-way portable electric girder vehicle combined with electric suction cups for glass curtain wall installation,to solve the problem of inclined curtain wall glass installation,suitable for taper and other installation tilt of curtain wall glass,is a kind of efficient,safe,fast installation method.Above research in nanning Wu Wei successful application in the new international airport terminal project,solve the taper unidirection double cable tension control and construction of glass curtain wall to find problems,promote the scientific and technological innovation,ensure the quality and safety,promote the project progress,ensure the 45th session of world gymnastics championship,the smooth made great social and economic benefits Also provides a construction model for the application of similar projects,has engineering practical value. |
PDF Full Text Request