Study On Safety And Stability Of Tall Formwork Support System

With the rapid development of China's architectural skill,people are no longer satisfied with taking architectures as livining demands.The constant emergence of advanced construction techniques and new materials lead to the presentation of many large-span and large-space buildings in different shapes.Meanwhile the support system for tall and large formwork is frequently applied in the process of construction engineering.However,the rate of high-formwork collapse accidents remain high in recent years.Therefore studies on the security and stability of high-formwork system has attracted extensive attentions.This thesis firstly introduced the force stability feature of high-formwork system from the five theoretical aspects including Euler's formula of the ultimate bearing capacity of axial compression member,stability principle analysis of high-formwork system,elastic buckling analysis of multi-row continuous compression member,buckling loads solution of continuous compression member and Euler's formula as well as effective length of axial compression members.Then combining with the case of engineering of Nanning Jiangnan Wanda Plaza,it conducted force theoretical calculation of high-formork on the basis of the theoretical calculation.It also applied ABAQUS software for modeling to analyze the force of high-formwork in the process of construction engineering.What's more,this thesis made an analysis on the security by means of fuzzy comprehensive evaluation model(FCEM)contructed by fuzzy comprehensive evaluation method,which verified the practicality of the construction of this model.This thesis intends to conduct the study from the four aspects of organization safeguards,construction preparation guarantee,technical measures and monitoring measures to ensure the constructive quality and security of high-formwork system.In this way the risk of sudden constructive accidents in high-formwork system can be lowered thereby the engineering successfully completed.