碳纖維混凝土在重復加卸載下力學行為的研究*
鄧宗才
- 摘 要
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鄧宗才
（山東建材學院 濟南 250022）[提要] 碳纖維混凝土是一種彈塑性材料，其力學行為與加載歷史有關。對碳纖維混凝土棱柱體試件作了低周重復加、卸載試驗，通過試驗測試及變形參數研究，提出了碳纖維混凝土重復加、卸載應力 應變曲線方程及殘余塑性變形的計算公式。這些數學表達式可根據材料特性進行調整，具有較廣泛的適用性。
[關鍵詞] 碳纖維混凝土 重復加、卸載 應力 應變關系The mechanical behavior of carbon fiber reinforced concrete dominantly depends on its load history. Through parametric study and experimental investigation, the model of stress-strain and the formula of residual plastic deformation under repeated load are proposed. The presented model is initiated to provide flexibility mathematical expressions which can be changed according to the materials properties.
Keywords: carbon fiber reinforced concrete; repeated loading; stress-strain relationship
