Research On The Design And Construction Technology Of Protective Scaffold For Super High-rise Building Towers

In recent years,the standard of urbanization in our country is deepening continuously,the rise of urbanization has put in motion the fast progress of the building industry,urban building appearance form towards ultra-high,local concave and convex,unique shape,etc.The booming development of the building brings difficulties to the maintenance of the building facade,so the important provisional equipment scaffolding is broadly employed at the building construction site in city.This topic relies on the complex changes of the engineering external facade,the conventional scaffolding design and building ways can not hit the spot,hence,it is essential to research on the protective scaffolding and construction techniques used in the towers of super tall buildings.In this article,the protective scaffolding system used in a tower in Kunming is studied through academic calculations,simulations and stress monitoring experiments on the scene.The following is a summary of principal studies:(1)In view of the complex deformation of the building fa(?)ade of the tower frame-core tube structure,the research designs a lifting self-raising protective scaffold that can solve the climbing of the variable section of the structure,which adopts a comprehensive system combining the characteristics of two systems: climbing scaffold and hanging scaffold,and puts forward a construction method in which the climbing scaffold and the tower crane work together,which perfectly fits the structural construction of the tower project.(2)The main stress parts of the lifting self-lifting protective scaffold are calculated,protective scaffolding load-bearing capacity,rigidity and stability fill the bill,which guarantees the normal work of the lifting self-levelling protective scaffold and provides a theoretical basis for finite element analysis and field test of the scaffold.(3)The static characteristics of the scaffold were studied by utilizing the simulation software ANSYS,and the stress and deformation features of scaffolding with and without wind load control impacts under different operating conditions were analyzed to verify the reasonableness of the structural forces of the scaffold;the analysis of the linear buckling analysis of the scaffold under unfavorable load conditions showed that the overall stability of the structure in the lifting phase was good,which further determined the weak position of the scaffold and provided a theoretical basis for the subsequent.(4)The structural stress monitoring of the key parts of the lifting self-levelling protective scaffold was carried out through field tests,and the change law of the scaffold bars under different working conditions was summarized,contast of the measured results on the scene,theory arithmetic and emulation,the three were verified with each other to further determine the feasibility of the scaffold.Through the design of the tower building protective scaffold and the research on the construction process of the frame,it makes it more safe and reliable,it contributes to the updating of traditional methods and to offer learning from the devise and build of protection scaffolds used in the same type of engineerings.