大坝观测与土工测试
大壩觀測與土工測試
대패관측여토공측시
DAM OBSERVATION AND GEOTECHNICAL TESTS
2001年
1期
40-42
,共3页
堆石%多级加荷%三轴试验%不等向固结%应力应变滞回圈%抗剪强度
堆石%多級加荷%三軸試驗%不等嚮固結%應力應變滯迴圈%抗剪彊度
퇴석%다급가하%삼축시험%불등향고결%응력응변체회권%항전강도
通过分析堆石粗粒土一个试样多级加荷三轴试验方法，将其分为不固结类的连续与固结类的不连续加荷。前者仅适用于σ3≤1.2MPa的低围压，后者必须考虑固结排水引起的应力回弹量。不连续加荷的固结方式对强度指标的影响仅限于C值，内摩擦角Φ值基本保持不变。建议对土工试验规程中有关粗粒土的多级加荷三轴试验作重新修订。
通過分析堆石粗粒土一箇試樣多級加荷三軸試驗方法，將其分為不固結類的連續與固結類的不連續加荷。前者僅適用于σ3≤1.2MPa的低圍壓，後者必鬚攷慮固結排水引起的應力迴彈量。不連續加荷的固結方式對彊度指標的影響僅限于C值，內摩抆角Φ值基本保持不變。建議對土工試驗規程中有關粗粒土的多級加荷三軸試驗作重新脩訂。
통과분석퇴석조립토일개시양다급가하삼축시험방법，장기분위불고결류적련속여고결류적불련속가하。전자부괄용우σ3≤1.2MPa적저위압，후자필수고필고결배수인기적응력회탄량。불련속가하적고결방식대강도지표적영향부한우C치，내마찰각Φ치기본보지불변。건의대토공시험규정중유관조립토적다급가하삼축시험작중신수정。
On the basis of one sample multi-stage loading triaxial testanalysis of rock-fill coarse grained soil, the loading is divided into unconsolidated type continuous loading and consolidated type discontinuous loading. The former only applies to low wallrock pressure of σ3≤1.2 MPa, and the latter must consider rebound quantity induced by consolidation and drain. The strength index effect of consolidation style of discontinuous loading is only limited to the value of C, while the angle of internal friction Φ is kept basically the same. It is suggested that the rules for coarse grained soil multi-stage loading triaxial tests be revised.
