| With the development and maturity of high strength building materials,the special shaped curtain wall has a new shape and peculiar shape,which gives a strong sense of visual impact,which makes the corner of the curtain constantly open in recent years.Due to the complex facade change of the special shaped curtain wall,it brings great challenge to the curtain wall construction technology.The traditional construction method of hanging basket and double row outer frame construction method can not meet the requirements.Therefore,it is necessary to study the application of the scaffolding and its construction platform outside the special-shaped curtain wall.In this paper,combined with concrete engineering examples,the construction of curtain wall exterior decoration is carried out by means of segmental erection of construction platform and multi-row landing scaffolding.In view of the complex construction platform and multi-row ultra-high floor frame,the design and construction technology of the steel truss special shape curtain wall construction platform and multi-exclusive frame are described in detail,including the technical principle,technological process,design essentials,etc.The key construction techniques and test methods have solved the problems of super high,excessive limit,multiple rows,large vertical construction load,difficult setting of connecting wall,multi-story superposition of construction live load,conversion of bearing rod and foundation treatment in the construction of special shaped curtain wall external scaffolding.Basement roof support Many technical problems such as bracing and strengthening.The finite element calculation software Sap2000 is used to analyze and calculate the construction platform and the landing frame structure to find the members with the greatest load and deformation as the control members of the main construction structure design.At the same time,the finite element analysis results are compared with the simplified calculation results and experimental results.The reasonable simplified calculation is convenient and quick,saves time and labor,and the error is within acceptable range.The accuracy of finite element method is high,but it is time-consuming and laborious.In the field,the simplified calculation method can be used to prejudge the scheme.The method of finite element simulation provides the basic data for the scheme.At the same time,the hanging basket load is acted on the end of the secondary beam and the secondary beam,respectively.At the middle position,it is found that the position of basket setting plays aleading role in the deformation of the secondary beam,and the influence on the main beam can be neglected approximately,and the position of the bearing fulcrum of the hanging basket should be as close as possible to the main beam of the platform in construction.For the first time,3Ds Maxs model technology is used to simulate the construction process of the scaffolding outside the special shaped curtain wall,and the construction technology is optimized,which lays a solid foundation for the breakthrough development of curtain wall technology in China.Through the research on the key technology of the construction of the special shaped curtain wall-the erection technology of the external scaffolding and the construction platform,the design and construction concept of all kinds of special shaped curtain walls are realized safely and stably.It makes the design and construction technology of the external scaffolding of the special shaped curtain wall of steel structure more mature,safe and reliable,promotes the renewal of the traditional technology,and provides a meaningful reference for the renewal and development of the relevant specifications. |
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