本文選題：土力學 + 超聲波波速�。� 參考：《巖石力學與工程學報》2015年07期

【摘要】：為分析凍結(jié)粉質(zhì)黏土的聲波參數(shù)與其物理力學性質(zhì)之間的關(guān)系,進行凍結(jié)粉質(zhì)黏土的超聲波測試,同時測定了其在不同溫度下的抗拉、抗壓強度�；谠囼灧治鰷囟取⒑屎透擅芏鹊葘鐾敛ㄋ俚挠绊懸约安ㄋ倥c強度的關(guān)系。結(jié)果表明:土樣在-1℃~-7℃范圍內(nèi),波速變化尤為劇烈;存在一個臨界含水率16.03%,使波速隨含水率的增加呈先增加后減少的趨勢;在含水率相同的情況下,波速隨干密度的增加呈線性增加;通過波速計算得到凍結(jié)粉質(zhì)黏土的3個動彈性力學參數(shù),并分析這些參數(shù)隨溫度的變化趨勢;凍土聲波波速與強度呈現(xiàn)出良好的相關(guān)性,凍土的強度越大,聲波波速越高。因此,可利用聲波測試技術(shù)對凍土進行無損檢測,為凍土強度的預測奠定基礎。
[Abstract]:In order to analyze the relationship between the acoustic wave parameters of frozen silty clay and its physical and mechanical properties, the ultrasonic testing of frozen silty clay was carried out, and the tensile and compressive strength of frozen silty clay at different temperatures was also measured. The influence of temperature, moisture content and dry density on the wave velocity of frozen soil and the relationship between wave velocity and strength are analyzed. The results show that the variation of wave velocity is especially sharp in the temperature range of 1 鈩，

本文編號：2100959