摘要
本文提出用落球仪快速测定土基压实度和含水量的两种方法,即单因子法和双因子法。根据落球陷入土中直径可直接利用标定曲线查得K和w,用修正的理论公式计算得到土基强度。实践表明,单因子法比双因子法的规律性好,更简便实用。但两种方法都可靠,在路基施工现场使用,能给出较好精度。
Two methods, the single factor method and the double factor method, forrapid determination of the compactness K and moisture content ω of clayeysubgrade by ball-drop test are presented. As a cave-in diameter of the ball onthe subgrade surface is read from the test apparatus, K and ω can be obtainedfrom prepared calibrating charts and the subgrade strength can be calculated bythe modified theoretical formula.Practices show that the single factor me-thod has better regularities than the other, it is simple and convenient in applica-tion, however, both methods are reliable and give good precisions in field testof subgrade work.
出处
《土木工程学报》
EI
1984年第4期51-56,共6页
China Civil Engineering Journal
