Mechanical Properties And Optimization Of Aluminum Alloy Formwork Pulling System Based On ANSYS

With the continuous advancement of urbanization,the aluminum alloy formwork pull sheet system is becoming more and more common in the practical application of concrete high-rise buildings,and the application demand in the domestic market is also increasing.At present,a lot of related research on formwork engineering has been carried out at home and abroad,but Research on the mechanical properties of aluminum alloy template pull tab systems is rare,so it is of great practical significance to carry out this research.This article takes the temporary support structure aluminum alloy formwork pull-tab structure system used in the actual project of the Vanke Urban Garden Project in Yingbin Middle Avenue,Nanchang County as an example.It is based on the aluminum alloy single-floor formwork,single-wall formwork,and single-room formwork pull-tab system.The mechanical properties were studied.The main results are as follows:(1)The intercostal slabs of aluminum alloy floor formwork and wall formwork are calculated theoretically and by finite element analysis according to the deformation of the four-sided fixed plate under the uniform load.The comparison of the two results verifies the finite element Reliability of simulation.(2)According to the geometric characteristics of the actual template,the modeling method of combining shell elements and solid elements can be used to conveniently perform finite element simulation calculations on the current template or the virtual improved design template and make a comparative analysis.The calculation results show that the longitudinal ribs on the floor slab can greatly reduce the deformation of the floor formwork.The deformation of the wall formwork is smaller at the top of the wall formwork and gradually increases in the middle and lower parts.The maximum lateral deformation values appear in At the bottom of the panel spanning the longitudinal and transverse ribs,the template structure has a greater impact on the deformation.It is close to the middle,thin and high webs,T-shaped longitudinal stiffeners with wider flanges,and raised,partially reinforced transverse ribs.,Can effectively reduce the maximum deformation and stress of the wall formwork.At the same time,from the perspective of economic benefits,the amount of wall mold materials is considered.In order to meet the requirements of reasonable increase of materials to resist the deformation of wall molds,the stiffener center of mass away from the panel can increase the moment of inertia of the section,and the rib spacing can be optimized in appropriate places where the stress is concentrated.(3)Considering the overall effect of the connection,the deformation of the single-layer single-room aluminum formwork tab system under the concrete pouring construction load is studied.The ANSYS software is used to simulate the deformation of the cavity wall mold and the overall top mold in the system,and the wall with the door opening.The maximum deformation of the mold surface is 1.17 mm,the maximum deformation of the wall mold surface with the window opening is 1.16 mm,the maximum deformation of the wall mold surface without openings on both sides is1.15 mm and 1.14 mm,respectively.The deformation gap of the surface under the lateral pressure is very small.The maximum deformation of the top mold of the single-room formwork system under the action of the poured concrete slab is1.77 mm.The maximum deformation of the single-room system meets the limit requirements of the allowable displacement.