The Wood Shoring And Its Seismic Performance For Brick Concrete Structure

The brick concrete structure has been built significantly in the 1970 s and 1980 s becauseof its simple construction,low cost and wide variety of materials.But it is easy to damage for poor integrity and ductility in many earthquakes,compared with steel or concrete structure.It can be prevent or mitigate the more serious destruction by strengthening the brick concrete structure.The following study is carried out in this paper.Firstly,in collection of the support and strengthening measure for brick concrete structure at domestic and abroad,two categories of lateral and vertical shoring structures are designed through seismic rescue experience as well as the practical cases in China National Training Base For Urban Search And Rescue.The size and material of the shoring structure are defined along with its application environment,in view of the failure characteristics of brick concrete structure in earthquake.Secondly,the stability of shoring members is analyzed with a certain load range.The design is reasonable for shoring structure,compared with Chinese current Code for design of timber structures.With the monotonic vertical load on,the compressive capacity of each shoring structure is obtained through analysis of the displacement and stress.According to the components of the support structure buckling critical load condition and the critical load under the compression limit state of the shoring structure,the advantages of various shoring structures are compared with the same static state.Finally,taking the three story brick concrete structure in the town as the research object,dynamic analysis of the shoring structure in the brick concrete structure is analyzed.The shear and compressive strength of the wall is checked by PKPM software.According seismic code requirements,seismic performance is concluded under 7 degree earthquake intensity.The finite element model of brick concrete structure is set up in the ANSYS finite element software.The structural inter-layer displacement angle is taken as the index of seismic performance analysis.By loading different earthquake intensity,the structure response of brick concrete structure is simulated under earthquake intensity over 7 degree,and the weak position of the brick concrete structure is determined.Under the shoring structure in the weak position of the brick concrete structure,the conclusion is come by comparing the shoring structure before and after.The support structure can share the load,accordingly the load of thefloor plate in the brick concrete structure is reduced,and the durability of the brick concrete structure is improved.In this paper,linear style is selected as the size of shoring structure to restrain the large space position.It can enhance the integrity of the brick concrete structure,reduce the relative movement of each layer,and improve the seismic performance.At the same time,the research results provide the shoring structure is easy to popularize and apply for earthquake emergency rescue,and can also improve the ability of preventing and reducing disaster in society.