Research On Pulling Capability Of Steel Beam-concrete Wall T-plate Pin Joint

With the rapid development of economics and construction, compositesteel-concrete structures, suitable for the national conditions of China, has been widelyused in various fields. In the field of super tall building, typical composite structurescomposed of steel frame and core tube has been more and more bing built. However,domestic researches on steel beam-concrete wall joint are very limited, which is the keyissue for design of super tall building. Few joint types can be available from aboardresearches. Especially, there are few researches on pulling capability of steelbeam-concrete wall joint, which has a great effect on the seismic performance of thestructure. Based on the engineering and the current available researches, steelbeam-concrete wall T-plate pin joint has been designed, and research on pullingcapability of the joint has been done. The main research work in the thesis are asfollowings:(1) Investigation and summary work on the application status of compositestructure has been done, as well as the research status and method of steelbeam-concrete wall joint. Research method and technical route were proposed.(2) Based on one practical engineering, experimental study on seismic performanceof a new type of the column-beam joint and wall-beam joint has been conducted. On thebasis of the test results, hysteretic behavior, ductility, energy dissipation capacity anddeform restored ability etc are discussed. Design suggestions of these joints wereprovided on account of the finite element analysis and the study on test results.(3) Six steel beam-concrete wall T-plate pin joints with diffident parameters ofdepth, vertical reinforcement ratio, quantity and position of the stud were designed andtested to study the pulling capability. According to the observation of experimentalphenomena, failure modes of the joints were concluded. The significant infect of pullingcapability and force transfer mechanism were studied, due to the analysis of loadingcarry, stress of the plate and vertical steel bar, etc. At end of this part, design andconstruction methods were proposed. (4) Stress and strain characteristics of concrete wall and joint area were studiedthrough finite element analysis via MSC.MARC. The effects of stud size and positionon the joints with studs were discussed on the basis of parametrical analysis.(5) Based on double shear criterion and hypothesis of rigid-plastic model,calculation formula of uplift bearing capacity for the joints without studs was derived,which was in good agreement with experimental results.20diffident joints withoutstuds were analyzed, which validated the precision of the formula. Furthermore, failurecondition of the plate web yielding joint was proposed, using the thory of elasticfoundation beam.Some problems needed further studied were suggested at the end of the thesis．...