- 摘 要
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鄧宗才
(山東建材學(xué)院 濟(jì)南 250022)[提要] 研究了素混凝土和鋼纖維混凝土在軸壓疲勞荷載下的破壞機(jī)理。通過試驗(yàn)研究了鋼纖維品種、纖維摻量、加載應(yīng)力水平對疲勞壽命及能量吸收的影響規(guī)律；探討了疲勞累積損傷的特性。研究表明：在較低的應(yīng)力水平下，鋼纖維混凝土的疲勞壽命、能量吸收值均比高應(yīng)力水平時明顯增大。
[關(guān)鍵詞] 鋼纖維混凝土 疲勞 損傷Results of an experimental investigation of the behavior of steel fiber reinforced concrete under cyclic compressive loadin are presented. The parameters ofriber type, fiber volume and the tress-strength ratio are all studied. The main emphasis is placed on the fatigue life, energy absorption and damae accumulat:ion. Fibers up t0 2 percent have considerable beneficial effect on the fatigue behavior of concrete.Fibers dissipate much more additional energy at lower stress levels than at higher stress levels.
Keywords: steel fiber reinforced concrete;fatigue; damage
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