Numerical Simulation And Theoretical Analysis Of Wharf RC Beams Strengthened With CFRP

CFRP is gradually recognized and widely used for strengthening civilconstructions because it has the merits of light weight, easy to construct andhigh intensity and so on. CFRP becomes the perfect material and has greatprospects in strengthening hydraulic structures because of its particularexcellent prevention of corrosion. At present, most of researches on reinforcedconcrete structures strengthened with CFRP are focused on experiments andtheoretic analysis, numerical simulation on this is not mature. Under thisbackground, this paper combined with the subject which is called research onthe examination and reinforcement technology and the durability of old wharfin Anhui province that approved by Anhui Waterway Administration, uses themethod of theoretic analysis and numerical stimulation to analysis the flexuralbehavior of RC beams strengthened with CFRP, this paper also does a deepresearch on the influence parameters of RC beams strengthened with CFRP.The main contents and conclusions are as follows:(1) Depends on the finite element method for reinforced concretestructure, systematicly describe the methods for solving nonlinear problemsand the convergence criterion, plastic theory of yield criteria and hardeningmodel, make of theoretical foundation for the finite element analysis.(2) Using the large universal finite element program ANSYS10.0, set upthe finite element models of test beams in literature. Do comparative analysisof the feature loads and load-displacement curves between the results ofnumerical simulation and experiment. The results show that: the result errorbetween numerical simulation and experiment is little, the finite elementmethod can simulate the fail in bending progress of RC beams strengthenedwith CFRP.(3) Selecting different reinforcement schemes and CFRP with differentmechanical properties as influence parameters, do the finite element analysison the flexural behavior of RC beams strengthened with CFRP. The resultsshow that: The length, width, thickness and elastic modulus of CFRP havegreat influence on the RC beams strengthened with CFRP. (4) Based on the plane section assumption and existing specifications,give the formula for calculating the bending capacity of cross section of wharfRC t-section beams, and briefly introduce the concrete computational process.(5) Based on the results in previous study, do the reinforcement designfor RC t-section beams of the bulk cargo wharf in Tongling Datong port,analyze and compare different schemes in flexural behavior and economy, andalso compare the results between numerical simulation and theoreticalanalysis.