改性再生混凝土梁抗彎性能試驗與分析
發(fā)布時間:2018-10-13 14:21
【摘要】:以硅粉含量和混雜纖維含量為試驗參數,將1根普通混凝土梁作為對照組,3根不同硅粉含量和2根混雜纖維不同體積含量的梁作為試驗組,對改性再生混凝土梁的抗彎性能進行分析,結果表明:改性再生混凝土梁與普通再生混凝土梁的破壞過程一樣都具有明顯的四個階段,而且其基本受力過程也符合平截面假定;而且隨著硅粉和混雜纖維的摻入使得改性再生混凝土梁的抗彎性能增強,抗開裂和極限承載力方面優(yōu)于普通再生混凝土梁;而且按照規(guī)范計算出來的正截面極限承載力與試驗值基本吻合,改性再生混凝土可以按照規(guī)范進行設計,為工程實踐提供了參考依據。
[Abstract]:Taking silica fume content and hybrid fiber content as experimental parameters, one ordinary concrete beam was used as control group, and three beams with different silica fume content and two hybrid fiber different volume content were used as experimental group. The flexural behavior of the modified recycled concrete beam is analyzed. The results show that the failure process of the modified recycled concrete beam and the ordinary recycled concrete beam have obvious four stages, and the basic stress process of the modified recycled concrete beam also accords with the assumption of plane section. With the addition of silica fume and hybrid fiber, the flexural properties of the modified recycled concrete beams are enhanced, and the cracking resistance and ultimate bearing capacity of the modified recycled concrete beams are better than those of the ordinary recycled concrete beams. Moreover, the ultimate bearing capacity of normal section calculated according to the code is basically consistent with the test value. The modified recycled concrete can be designed according to the code, which provides a reference for engineering practice.
【作者單位】: 西京學院土木工程學院;西安建筑科技大學土木工程學院;
【基金】:2015級研究生創(chuàng)新基金(2017-YJSXM-21) 國家自然科學基金(51178388,51008245,51678480) 陜西省教育廳重點實驗室科研計劃項目(11JS059,12JS055) 陜西省科技統(tǒng)籌創(chuàng)新工程計劃(2013SZS01-Z02,2013SZS01-K01) 陜西省工業(yè)攻關項目資助(2014K06-34)
【分類號】:TU375.1
[Abstract]:Taking silica fume content and hybrid fiber content as experimental parameters, one ordinary concrete beam was used as control group, and three beams with different silica fume content and two hybrid fiber different volume content were used as experimental group. The flexural behavior of the modified recycled concrete beam is analyzed. The results show that the failure process of the modified recycled concrete beam and the ordinary recycled concrete beam have obvious four stages, and the basic stress process of the modified recycled concrete beam also accords with the assumption of plane section. With the addition of silica fume and hybrid fiber, the flexural properties of the modified recycled concrete beams are enhanced, and the cracking resistance and ultimate bearing capacity of the modified recycled concrete beams are better than those of the ordinary recycled concrete beams. Moreover, the ultimate bearing capacity of normal section calculated according to the code is basically consistent with the test value. The modified recycled concrete can be designed according to the code, which provides a reference for engineering practice.
【作者單位】: 西京學院土木工程學院;西安建筑科技大學土木工程學院;
【基金】:2015級研究生創(chuàng)新基金(2017-YJSXM-21) 國家自然科學基金(51178388,51008245,51678480) 陜西省教育廳重點實驗室科研計劃項目(11JS059,12JS055) 陜西省科技統(tǒng)籌創(chuàng)新工程計劃(2013SZS01-Z02,2013SZS01-K01) 陜西省工業(yè)攻關項目資助(2014K06-34)
【分類號】:TU375.1
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