Strength Models And Design Advice Of RC Frame Joints Strengthened With The Beam-column-end-CFRP Indirectly

Abstract:According to the significance of current RC frame joints strengthened by carbon fiber cloth, and there still no uniform about he bearing capacity calculation formula of concrete frame joint core area in China’s relevant reinforcement specification, this paper presents a Strength Model of RC Frame Joints Strengthened with the CFRP whether indirect or direct reinforcement.Through the105domestic and foreign test nodes, this paper carries on the discussion to bearing capacity calculation model of Concrete Frame Joints Strengthened with CFRP, and puts forward some suitable for engineering design of CFRP solid node design calculation formula of bearing capacity, design method and structural requirements, recommend design verification, gives the relevant parameters and the comparison of test results of value engineering.1) Based on existing reinforced concrete frame node model, select a suitable model for calculating the shear strength of the beam-column jionts with CFRP, a formula of shear bearing capacity of reinforced concrete frame node model of core area, suitable for carbon fiber direct and indirect shear bearing capacity formula of strengthening node is derived, and the results were verified by experiments, evaluation, which is used to guide the engineering practice;2) Comparative analysis of the test results and the calculation formula based on the results, the engineering design recommendations are presented the relevant calculation parameters, practical design method to establish the CFRP seismic strengthening reinforced concrete frame joints, and put forward the corresponding construction requirements.3)Based on the comparative analysis of the bearing capacity of the model results and the experimental results, this papaer gives engineering design and suggests the relevant calculation parameters, practical design method to establish anchor CFRP seismic strengthening reinforced concrete frame joints, and puts forward the design structure of the corresponding requirements.This paper has10figures,8tables and88references...