Research On Design And Construction Of Reinforced Truss Floor Support Plate

In recent years,my country’s economy has developed rapidly,and the urbanization process has accelerated.More and more people are pouring into cities in order to improve their quality of life.Urban real estate development and construction,as well as rural urban reconstruction projects,have generated a lot of demand for housing.In order to comply with the development of urbanization and meet the needs of the people for housing,the construction process of shortening the construction period and saving construction costs has become an urgent need.The construction method of the traditional cast-in-place slab structure has been very mature after many years of development.To shorten the construction period and save the construction cost,it is necessary to innovate the traditional construction technology.Reinforced truss building floor slab came into being under such social demand.Reinforced truss floor slab is a new type of floor slab combination in recent years.Compared with traditional cast-in-place slab,it has the advantages of low cost,convenient construction and short construction cycle.It has gradually gained popularity in the domestic construction market.Therefore,the construction technology is an emerging technology,and the social popularity is not high enough.The understanding of this kind of floor is still the same as that of ordinary reinforced concrete,and there are some doubts about the safety and optimization design of the formwork.Further promotion and application have hindered.In order to study the overall performance of reinforced truss concrete floor slabs,the design of reinforced truss floor slabs was further optimized to reduce budget costs.In this paper,the finite element software ANSYS15.0 was used to simulate and analyze the reinforced truss floor slabs,and the reinforced truss template with horizontal reinforcement was analyzed.The integrity of the concrete and the specific role of the transverse reinforcement are used to optimize the design in the next step.With reference to engineering disciplines such as engineering mechanics and design principles of concrete structures,the stability,stiffness,and deflection of reinforced truss formwork are calculated,which proves that the formwork itself is reasonable.Combined with finite element analysis and simulation to verify the accuracy of theoretical calculation and numerical simulation,and at the same time highlight the convenience and efficiency of numerical simulation analysis.The finite element ANSYS15.0 software was used to analyze the reinforced truss formwork with lateral reinforcement,compared with the analysis results of the reinforced truss formwork without lateral reinforcement,summarized the role of the transverse reinforcement,and used this to conduct an overall optimization study of the formwork.In this paper,the research on the construction process has the following aspects:(1)Without considering the galvanized steel plate in the construction stage,the rigidity formula of the reinforced truss formwork with lateral reinforcement added is derived;(2)The lateral reinforcement is added on the basis of the reinforced truss formwork and After the concrete is poured,two-way slabs are formed,which is used as a model to optimize the upper steel bars,ie,transverse steel bars and upper steel bars,using finite element software.(3)Research the calculation formula of the maximum use span of the steel truss floor bearing plate,and carry out the optimization design analysis of the maximum use span of the formwork.(4)Economical analysis of traditional cast-in-place slabs and reinforced truss floor slabs.The research conclusions of this paper are as follows:(1)The derivation of the bending stiffness formula in the construction stage is to use the centroid formula and parallel shift axis formula in material mechanics to derive the moment of inertia,and finally obtain the template rigidity formula.However,this formula is limited to theoretical derivation,and the specific engineering application needs further verification.(2)The optimized results show that the overall impact of the addition of transverse steel bars on the bearing plates of the steel truss floor is relatively small.Therefore,in actual projects,the steel bar truss can be constructed according to the steel bar truss model in the specification.In order to consider the integrity of the concrete,the diameter of the smaller transverse reinforcement can be used.It is recommended that the minimum value of the construction reinforcement Φ6@200 specified in the code be used.(3)After calculating the selected steel truss formwork,it is concluded that on the basis of ensuring the safety and applicability of the steel truss form,the maximum span after optimization has been greatly improved,and the results of the optimization have increased the use limit of the steel truss formwork,Reduce the workload of setting up external support and save the project budget.(4)Although the calculated span of the reinforced steel truss floor bearing plate is increased,the price still has advantages over the traditional cast-in-place slab.Under the condition of the same cost,the optimized reinforced steel truss floor slab can be applied to the structural form of larger span.In the end,the concrete engineering process is used to restore the concrete construction process of the steel truss building floor slab,and the optimized conclusion is popularized and applied.At the same time,the project examples after the promotion are also introduced.