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Empirical Solution for Estimating California Bearing Ratio of Wyoming Soils

机译：估算怀俄明州土壤加州含荷率的经验解

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The California bearing ratio (CBR) laboratory test is often used to estimate support characteristics of subgrade, subbase, and base course materials used beneath pavements. Completing actual CBR laboratory testing is not always feasible for a variety of reasons including difficulty and cost of collecting soil samples, cost of tests, time required for testing, preliminary planning stages, or in situations where a project covers a large expanse and testing is limited. In these situations, it is beneficial to estimate CBR values, particularly for subgrade soils. This paper presents an empirical method of estimating CBR values for a variety of soil types found throughout Wyoming based on soil parameters that can be easily estimated or obtained from quick, inexpensive laboratory tests. The empirical solution is based on general bearing capacity theory applied to the specifics of the CBR laboratory test and calibrated through regression analysis of actual laboratory test results for Wyoming soils. This method is not a replacement for laboratory analyses, but intended for situations where detailed analysis is not warranted.
机译：加利福尼亚承载比（CBR）实验室测试通常用于估算人行道下使用的路基，路基和路基材料的支撑特性。出于各种原因，完成实际的CBR实验室测试并不总是可行的，其中包括收集土壤样品的难度和成本，测试成本，测试所需的时间，初步计划阶段，或者在项目涉及的范围很广且测试受限的情况下。在这些情况下，估计CBR值是有益的，尤其是对于路基土壤。本文提出了一种根据土壤参数估算CBR值的经验方法，该参数可轻松估算或从快速，廉价的实验室测试中获得，基于土壤参数。该经验解决方案基于适用于CBR实验室测试细节的通用承载力理论，并通过对怀俄明州土壤的实际实验室测试结果进行回归分析进行了校准。该方法不能代替实验室分析，而是用于不需要进行详细分析的情况。

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