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论述了现行规范中纵向受拉钢筋应变不均匀系数ψ公式的不足之处,由钢筋砼梁的挠度研究成果得到了新的ψ公式,并对比了新、旧公式。建议在新规范里采用新的ψ公式。
The deficiencies of the formula of ψ formula for strain in longitudinal tensioned bar are discussed in this paper. A new ψ formula is obtained from the deflection research results of reinforced concrete beam, and the new and old formulas are contrasted. It is recommended to adopt the new ψ formula in the new specification.