Modeling And Analysis Technology Of Aerial Building Machine

The development of integral climbing steel platform formwork system can effectively promote the process of building industrialization in China,and the research on this kind of equipment system meets the needs of future construction industry.In recent years,the integral climbing steel platform formwork system is mainly built on the support of the building tubular,and great progress and development have been made.However,despite the advantages of industrialized construction,it is difficult to overcome the difficulties in forming automatic and continuous technological processes through technical paths and force transition path.In order to give full play to the advantages of intelligent construction of the integral climbing steel platform formwork system and achieve the five objectives of safe and reliable operation,controllable project quality,controllable construction cycle,controllable construction and installation costs and zero emission of construction waste,a new type of floor-mount assembled mold system(Aerial Building Machine)emerged.The integrated platform system of Aerial Building Machine integrates intelligent lifting,standard construction platform,equipment and facilities,and digital operation and control system,breaks through the thickness limit of tube support,realizes the continuous construction of vertical direction mechanization and automation of the main structure of high-rise buildings,improves the mechanization and automation of on-site construction process and labor productivity,greatly enriches the application scenarios of multi-disciplinary advanced technologies in the construction industry,and drives the cross-disciplinary collaborative innovation and development.In this paper,the load-bearing capacity,overall stability,load transfer path and the construction mechanism of key components of the new construction equipment are studied in detail.The main research contents and achievements are as follows:(1)Summarizes the design ideas of the aerial building machine,focusing on the synchronous lifting technology,automatic opening and closing template technology,intelligent positioning and hoisting technology of components,concrete pouring technology,remote intelligent control and other technologies,so as to have a deep understanding of construction methods and technical systems,and accurately grasp Its force characteristics.(2)Conbined with the structural characteristics of the Aerial Building Machine,the load transfer path of the Aerial Building Machine "is summarized,and the most unfavorable state of the structure is determined by studying the different states of the structure during the construction process,and the possible load action of the structure under different conditions is revealed.Based on the existing codes,the load value and combination principle of Aerial Building Machine" are determined,and the simplified simulation strategy is proposed according to the stress characteristics of key components.(3)The finite element analysis of Aerial Building Machine is carried out.The results show that the aerial building machine has good bearing capacity and high stability;The initial gap between the guide wheel and the chord has a great influence on the structural deformation and internal force distribution,which determines which simulation element to choose for the key components.The direct analysis method of design can take the initial geometric imperfections of overall structure and member initial imperfections into account when calculating the internal force of the structure,and the concept of mechanics is clearer,and the stage of checking calculation of the stability of the component is omitted.(4)The static loading and cyclic loading of lattice chord members are studied,and the mechanical properties,deformation characteristics and local stability of the members are analyzed.The test results show that the structure has stable and reliable mechanical properties and local stability,no plastic damage and local damage,and the upper and lower flange plates are kept intact all the time.(5)Based on the finite element analysis results of Aerial Building Machine,the equivalent bending stiffness of truss is deduced by introducing continuous assumption,and a simplified model is established to simulate and reproduce the structural static response.