Study On The Mechanics Performance Of The Construction Platform Steel Frame Of High-rise Building

With the rapid growth of Chinese society economy,our country High-rise building has developed rapidly.In recent years,the construction equipment-Integrated platform system for super high-rise building of the core tube structure is a new construction technology,in a number years of high-rise building projects have been applied.The government has vigorously promoted the the construction equipment-Integrated platform technology,but there are few related studies..Therefore,the numerical simulation method is adopted in this paper.to study the construction equipment-Integrated the core construction platform of a super high-rise building provides reference value for architectural design and construction.equipment-Integrated platform in the future.Hydraulic formwork focuses on three types of hydraulic formwork construction system(namely sliding form,climbing form,jacking-up form system).The jacking-up formwork construction platform is a new type of formwork system,which is used to construct the structure construction of super high-rise core tube.It is one of the "Ten New Technologies of Construction Industry in 2010" that the Ministry of Housing and Urban-Rural Construction has focused on promoting.After systematic analysis and comparison,the micro-convex fulcrum jacking construction platform is selected from four kinds of integral jacking construction platform for research.The platform has the advantages of flexible fulcrum deployment,strong adaptability,small space occupation,but large bearing capacity,high overall stability,high lateral stiffness,fast construction speed and safe operation.This paper takes the construction platform of super high-rise building as the main research object.On the basis of systematic analysis and summary of current research situation,existing problems and development trends at home and abroad,study on the steel structure platform frame mechanical behavior.The main work consists of two parts,Part one is to use ABAQUS finite element analysis software to model and calculate the construction platform.The other part is the stress analysis of the upper and lower supports after referring to the finite element analysis and calculation of the integral construction platform.This topic focuses on the following contents:Modeling and Static Calculation of Construction Platform Based on ABAQUS Software,Under four working conditions,the stress and deformation of the construction platform images under 16 load combinations were analyzed.The deformation nephogram shows that the maximum deformation and stress of the construction platform meet the requirements of the code.At the same time,the component with stress ratio greater than 0.7 is optimized.,which improves the overall stability of jacking up steel construction platform.Applying the Basic Theory of Finite Element Method,ABAQUS software is used to model the support frame and to study its mechanical performance and force transmission mechanism.After the calculation under the most unfavorable condition.The maximum stress values of the claw box and the claw of the upper and lower supports meet the requirements.The overall stress situation is even and gentle and meet the requirements of design specifications.For the above two items,According to the characteristics of its large volume and large safety factor in the current stage,it needs to be optimized.Giveing a reasonable design suggestions.The analysis of steel frame and supporting system of super high-rise building construction platform is of great practical significance for their safe application in construction.It is a beneficial exploration in the construction safety of super high-rise building,and it can also provide some support for the technical progress in related fields in the future.