本文選題：砂巖 + 反平面剪力��； 參考：《巖土力學(xué)》2016年S1期

【摘要】：針對含邊緣裂縫之砂巖試體受反平面剪力情形進(jìn)行了III型斷裂韌度量測試驗,搭配相關(guān)所推導(dǎo)之理論公式求取砂巖III型斷裂韌度。研究試驗條件為無圍壓及單軸荷重加載下進(jìn)行III型斷裂試驗,且針對試體受高溫后之性質(zhì)改變?yōu)樽兞織l件加以探討。研究結(jié)果表明,以該方式進(jìn)行III型斷裂韌度之量測,為可靠且穩(wěn)定;砂巖經(jīng)歷溫度在200℃前,試體III型斷裂韌度會提升,之后呈現(xiàn)下降,到600℃,下降趨于平緩;隨著燒結(jié)溫度的提升,單壓強(qiáng)度、動態(tài)楊氏模量、動態(tài)泊松比與III型斷裂韌度皆有下降之趨勢,且試體出現(xiàn)熔融樣態(tài),表面出現(xiàn)明顯微裂紋。
[Abstract]:In this paper, the III mode fracture toughness measurement test is carried out for sandstone samples with edge fractures under antiplane shear force, and the III fracture toughness of sandstone is obtained according to the theoretical formulas derived by correlation. The III mode fracture test was carried out under the condition of no confining pressure and uniaxial loading, and the condition that the properties of the specimen changed into variables after high temperature was discussed. The results show that the measurement of III mode fracture toughness in this way is reliable and stable, and the III fracture toughness of the sample increases before the temperature of 200 鈩，

本文編號：1949845