Quasi-static Test Study On The Prefabricated V-section Of PSRCL

The SRC structure has the characteristics of high bearing capacity,good seismic performance and high rigidity.It is widely used in practical engineering.The combination of the internal steel and the external reinforced concrete section forms the form of the steel-concrete composite structure,which can cooperate with each other so that their respective advantages are fully exploited.This is superior to the simple superposition of steel and reinforced concrete combination effect,also determines the SRC structure is the ideal seismic structure,especially for high-rise buildings and large-span buildings.However,its construction process is numerous,the structure of the complex features of the complex,greatly restricts the promotion of this structure,so that the SRC structure of the excellent overall performance is not fully play.Based on this,some experts have proposed prefabricated steel reinforced concrete structure(PSRC structure).So far,the domestic design specifications only for the SRC beam,there is no structural guidance on the PSRC structure,the relevant research is also rarely heard.Therefore,the seismic performance and seismic design method of PSRC specimen brook on delay.In this paper,the "pseudo-static test of PSRC beam of V-type prefabricated webs" can fill the gaps in the study of PSRC structure in this section,and provide relevant scientific support for the development of PSRC structure theory.PSRC seismic has complicated performance.On the basis of the experiment,the seismic performance and theoretical analysis of the V-type prefabricated web PSRC specimen under low cyclic loading are studied preliminarily.Mainly to complete the following parts:(1)Through the experimental study on the low cyclic reversed load of four PSRC beams,the shear mechanism,failure type and failure are studied by using shear span ratio,steel type,shear connection and concrete strength as parameters.Characteristics of the stress,strain and cracks in the development of the law.(2)The theoretical analysis of the test results is carried out to study the influence of concrete strength design parameters on its seismic performance.The hysteretic behavior,the law of stiffness degradation,the law of strength attenuation,ductility and energy dissipation are taken as the indexes.The seismic performance of the specimen is studied,and the mechanical properties of the overlapped surface are studied,and the main factors affecting the seismic performance are analyzed.(3)Summarize the research results and the areas that need to be improved,and putforward the construction of PSRC beams of V-type prefabricated webs,and make a prospect for their follow-up research.