| Numerical Determination of Shear Strength of Steel Reinforced Concrete Column Strengthened by CFRP Sheets |
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| 作者姓名： | 王铁成 余流 王立军 |
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| 作者单位： | [1]SchoolofConstructionalEngineering,Tianjin300072,China [2]HebeiInstituteofConstructionalEngineering,Zhangjiakou075024,China |
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| 摘 要： | The earthquake-resistant property of reinforced concrete members depends on the interaction between reinforcing bars and surrounding concrete through bond to a large degree,In this paper a general system aimed at dealing with the failure analysis of reinforced concrete columns strengthened with carbon-fiber-reinforced plastic(CFRP) sheets including bond-slip of the anchored reinforcing bars at the foot of the columns is presented.It is based on the yield design theory with a mixed modeling of the structue,according to which the concrete material is treated as a classical two-dimensional continuum ,whereas the longitudinal reinfocing bars are regarded as one-dimensional rods including bond-slip at the foot of the columns,In shear reinforced zones both the shear CFRP sheets and transvers reinforcing bars are incorporated in the analysis throuth a homogenization procedure and they are only in tesion ,The approach is then implemented numerically by means of the finite-element formulation,The numerical procedure produces accurate estimates for the loading-carrying capactiy of the shear members taken as an illustrative application by correlation with the experimental results,so the proposed approach is valid.
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| 关 键 词： | 钢筋混凝土柱 碳纤维增强塑料板 玻璃钢板 剪切强度 数值计算 地震激励 |
Numerical Determination of Shear Strength of Steel Reinforced Concrete Column Strengthened by CFRP Sheets |
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| WANG Tie cheng ,YU Liu ,WANG Li jun.Numerical Determination of Shear Strength of Steel Reinforced Concrete Column Strengthened by CFRP Sheets[J].Transactions of Tianjin University,2003,9(1):58-62. |
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| Authors: | WANG Tie cheng YU Liu WANG Li jun |
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| Institution: | 1. School of Constructional Engineering, Tianjin University, Tianjin 300072, China
2. Hebei Institute of Constructional Engineering, Zhangjiakou 075024, China |
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| Abstract: | The earthquake resistant property of reinforced concrete members depends on the interaction between reinforcing bars and surrounding concrete through bond to a large degree. In this paper a general system aimed at dealing with the failure analysis of reinforced concrete columns strengthened with carbon fiber reinforced plastic (CFRP) sheets including bond slip of the anchored reinforcing bars at the foot of the columns is presented. It is based on the yield design theory with a mixed modeling of the structure, according to which the concrete material is treated as a classical two dimensional continuum, whereas the longitudinal reinforcing bars are regarded as one dimensional rods including bond slip at the foot of the columns. In shear reinforced zones both the shear CFRP sheets and transverse reinforcing bars are incorporated in the analysis through a homogenization procedure and they are only in tension. The approach is then implemented numerically by means of the finite element formulation. The numerical procedure produces accurate estimates for the loading carrying capacity of the shear members taken as an illustrative application by correlation with the experimental results, so the proposed approach is valid. |
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| Keywords: | shear strength carbon fiber reinforced plastic(CFRP) sheets bond slip anchored reinforcing bars |
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