本文選題：橋梁工程　切入點：氣候變化　出處：《北京交通大學學報》2015年01期 　論文類型：期刊論文

【摘要】：氣候變化引起的全球大氣中CO2濃度的升高,加速了鋼筋混凝土(RC)結構的劣化.針對《混凝土耐久性設計規(guī)范》中規(guī)定的碳化環(huán)境(Ⅰ類環(huán)境),評估了未來氣候變化對中國RC結構在正常使用極限狀態(tài)下時變可靠度的影響.研究顯示:未來氣候變化使中國RC結構的平均碳化深度增大20%~40%,降低了RC結構的碳化侵蝕可靠度.到2100年,混凝土結構耐久性設計規(guī)范中Ⅰ類環(huán)境下Ⅰ-A、Ⅰ-B環(huán)境作用等級的耐久性規(guī)定不能夠適應氣候變化對中國鋼筋混凝土結構的耐久性影響.
[Abstract]:The increase in CO2 concentrations in the global atmosphere caused by climate change, The deterioration of reinforced concrete (RC) structures is accelerated. In view of the carbonation environment specified in the concrete durability Design Code (Class I), the time varying of future climate change for RC structures in China under the normal service limit state is evaluated. Research shows that future climate change will increase the average carbonation depth of RC structures in China by 20 or 40 percent, reducing the reliability of carbon erosion of RC structures by 2100. In the durability design code for concrete structures, the durability regulations of class 鈪，

本文編號：1649724