城市勘测
城市勘測
성시감측
URBAN GEOTECHNICAL INVESTIGATION & SURVEYING
2014年
6期
164-168
,共5页
非饱和土%抗剪强度%三轴试验%含水量%干密度
非飽和土%抗剪彊度%三軸試驗%含水量%榦密度
비포화토%항전강도%삼축시험%함수량%간밀도
unsaturated soil%shear strength%triaxial shear test%water content%dry density
已有的研究成果表明,含水量和干密度等物性指标对非饱和土的抗剪强度具有较大的影响,因此,有必要从试验的角度探讨含水量和干密度对非饱和土的抗剪强度的影响规律。通过三轴剪切试验,开展了控制含水量和干密度的重塑非饱和土的试验测试,试验结果表明,含水量和干密度是影响非饱和土抗剪强度的重要因素,最佳含水量和最大干密度是应力-应变关系相互转化的临界点。
已有的研究成果錶明,含水量和榦密度等物性指標對非飽和土的抗剪彊度具有較大的影響,因此,有必要從試驗的角度探討含水量和榦密度對非飽和土的抗剪彊度的影響規律。通過三軸剪切試驗,開展瞭控製含水量和榦密度的重塑非飽和土的試驗測試,試驗結果錶明,含水量和榦密度是影響非飽和土抗剪彊度的重要因素,最佳含水量和最大榦密度是應力-應變關繫相互轉化的臨界點。
이유적연구성과표명,함수량화간밀도등물성지표대비포화토적항전강도구유교대적영향,인차,유필요종시험적각도탐토함수량화간밀도대비포화토적항전강도적영향규률。통과삼축전절시험,개전료공제함수량화간밀도적중소비포화토적시험측시,시험결과표명,함수량화간밀도시영향비포화토항전강도적중요인소,최가함수량화최대간밀도시응력-응변관계상호전화적림계점。
Existing research results show that water content and dry density and other physical indicators have great influence on the shear strength of unsaturated soils ,therefore,it is necessary to investigate variation of shear strength of unsaturated soils with water content and dry density by experiment .By triaxial shear test ,carried out experimental test on remolded unsaturated soils ,controlling water content and dry density ,the test results show that water content and dry den-sity is an important factor on shear strength of unsaturated soil ,the optimum water content content and maximum dry den-sity is the critical point of mutual transformation about stress -strain relationship .