| Steel plate-concrete composite (SPCC) technique can be applied to the strengthening of reinforced concrete beams. This technique was developed based on the research of SPCC beam. In order to study the structural behavior of RC beams strengthened by SPCC techniqu and based on the references from both domestic and overseas, an innovative composite section of steel and concrete is put forward in this thesis. At first, steel bar was planted into RC-beam, then concrete was filled between steel plate jointing with stud and RC-beam. The beams failed in flexural failure mode demonstrated highly improved load carrying capacity.At present, the relevant research about SPCC strengthening is rare in international level. To study the shearing behavior in static, four SPCC specimens were tested and the numerical analysis was conducted. By comparison between experimental and numerical result, the shearing behavior of SPCC strengthening was analyzed thoroughly. This thesis can be valued as an elementary study of the behavior of SPCC strengthening, which serves as the basis of itsapplication in bridge engineering.The following research tasks were conducted in this thesis:1. Four specimens were tested to evaluate their shearing capacity. The content included the design and fabrication of specimens, the distribution of tested points, and the procedure of the test. Then, the test results were analyzed to evaluate the shearing capacity, deformation and strain.2. The finite element software ANASYS was used for a numerical study of the specimen. Compared with the experimental and finite elemental result, the shearing parameters were analyzed and the impaction of concrete, the space between planting bar and stud, the height ofsteel plate were analyzed.3. The theatrical analysis about the behavior of SPCC was according to the results of finite element and experiment. Then the simplified shearing formula was proposed, and the calculation results are in good accordance with the test. |
PDF Full Text Request