路基工程
路基工程
로기공정
SUBGRADE ENGINEERING
2011年
4期
82-86
,共5页
麦秸秆加筋石灰土%加筋条件%抗剪强度%灰色关联度分析%滨海氯盐渍土
麥秸稈加觔石灰土%加觔條件%抗剪彊度%灰色關聯度分析%濱海氯鹽漬土
맥갈간가근석회토%가근조건%항전강도%회색관련도분석%빈해록염지토
wheat straw reinforced limestone soil%reinforcement condition%shear strength%grey correlation analysis%costal chlorine saline soil
为增强石灰固化滨海盐渍土的强度、塑性和抗变形能力,进行了麦秸秆加筋辅助处理的试验。试验分析结果表明：①麦秸秆加筋作用主要提高土的粘聚力,对内摩擦角的影响很小。②适宜的麦秸秆加筋长度为20 mm,约为试样直径的1/3;适宜的加筋率为0.25%。③养护初期麦秸秆加筋作用较强,养护后期,土的强度提高主要依赖石灰的固化作用。④灰色关联度理论分析认为,对加筋土的粘聚力影响程度依次为固化作用、加筋率、加筋长度;对内摩擦角影响程度依次为固化作用、加筋长度、加筋率。固化作用是影响加筋土强度的主要指标。麦秸秆与石灰共同加筋固化,拓宽了盐渍土的处理方法,丰富了加筋材料的种类。
為增彊石灰固化濱海鹽漬土的彊度、塑性和抗變形能力,進行瞭麥秸稈加觔輔助處理的試驗。試驗分析結果錶明：①麥秸稈加觔作用主要提高土的粘聚力,對內摩抆角的影響很小。②適宜的麥秸稈加觔長度為20 mm,約為試樣直徑的1/3;適宜的加觔率為0.25%。③養護初期麥秸稈加觔作用較彊,養護後期,土的彊度提高主要依賴石灰的固化作用。④灰色關聯度理論分析認為,對加觔土的粘聚力影響程度依次為固化作用、加觔率、加觔長度;對內摩抆角影響程度依次為固化作用、加觔長度、加觔率。固化作用是影響加觔土彊度的主要指標。麥秸稈與石灰共同加觔固化,拓寬瞭鹽漬土的處理方法,豐富瞭加觔材料的種類。
위증강석회고화빈해염지토적강도、소성화항변형능력,진행료맥갈간가근보조처리적시험。시험분석결과표명：①맥갈간가근작용주요제고토적점취력,대내마찰각적영향흔소。②괄의적맥갈간가근장도위20 mm,약위시양직경적1/3;괄의적가근솔위0.25%。③양호초기맥갈간가근작용교강,양호후기,토적강도제고주요의뢰석회적고화작용。④회색관련도이론분석인위,대가근토적점취력영향정도의차위고화작용、가근솔、가근장도;대내마찰각영향정도의차위고화작용、가근장도、가근솔。고화작용시영향가근토강도적주요지표。맥갈간여석회공동가근고화,탁관료염지토적처리방법,봉부료가근재료적충류。
In order to increase the strength,plasticity and deformation resistance of lime-solidified costal saline soil,reinforcement test with wheat straw is carried out.The test results show that： ①wheat straw reinforcement is mainly to increase the cohesion of soil,with little influence on inner frictional angle.② The appropriate reinforcement length is 20 mm,about 1/3 of sample diameter and the appropriate reinforcement rate is 0.25%.③ In early stage of curing,wheat straw has stronger reinforcing effect;in the later period of curing,soil strength is mainly increased by solidification of lime.④ It is considered through grey correlation analysis that the effect degree on the cohesion of reinforced soil is as follows： solidification reinforcement rate reinforcement length,and that on the inner frictional angle is： solidification reinforcement length reinforcement rate.Solidification is the major influencing factor of reinforced soil strength.Wheat straw reinforcement and lime solidification broadened the treatment method of saline soil and enriched the categories of reinforcing material.
