寧明膨脹土膨脹變形規(guī)律和本構(gòu)關(guān)系研究.pdf

1、學(xué)校代號]堂3分類號坐!，|YS03901“(803920學(xué)號一Q!豎!!!一一密級——點(diǎn)沙形夕文學(xué)碩士學(xué)位論文寧明膨脹土膨脹變形規(guī)律和本構(gòu)關(guān)系研究學(xué)位申請人姓名型玉暨培養(yǎng)單位長沙理工人學(xué)導(dǎo)師姓名及職稱韭熊蘊(yùn)熬援學(xué)科專業(yè)重墮皇叢堂王猩研究方向路基墮匿王捏論文提交日期：霎耋五生必旦ABSTRACTThedilationalsrtainofexpansivesoilsisoneofthemostdifficultprobleminthefi

2、eldofengineeringgeologyandunsaturatedsoilsmechanicsAtpresent，manytestsondilatationgalstrainandresearchonswellingconstitutiverelationshipshavebeencarriedoutHowevertheoverwhelmingmajorityisbasedonplenteouswatersupply，andla

3、wdrawnisallaboutwethertheinitialwatercontentisconstant，thesinglerelationshipbetweentheswellingstrainsandverticalpressure，orwhentheverticalpressureisconstant，thesinglerelationshipbetweentheswellingstrainsandinitialwaterco

4、ntentTheswellingmechanismofexpansivesoilsiscomplicated，tofindoutthemajorfactorandtoestablishreasonableandaccurateswellingconstitutiverelationshipisthekeytoexpansivesoilsBasedonthelaboratoryswellingexperiments，relationshi

5、pbetweentheswellingstrainunderloadandtheverticalpressure、relationshipbetweentheswellingstrainunderloadandinitialwatercontent、relationshipbetweentheswellingstrainunderfreeloadandinitialwatercontentandrelationshipbetweenth

6、eswellingpressureandinitialwatercontentaresystematicallystudiedinthisthesis，andputforwardtoaswellingpredictionformulawhichcanbeusedtocalculatetheswellingstrainunderloadwhentheinitialwatercontentandtheverticalpressurevary

7、atthesanletime；therelationshipbetweenthefinalwatercontentandinitialwatercontent，therelationshipbetweenthefinalwatercontentandverticalpressureisalsopresented，andbringforwardaformulawhichCanbeusedtocalculatethefinalwaterco

8、ntent；additional，thattherelationshipbetweentheswellingprocessstrainunderloadandprocesswatercontentislinearisalsoverifiedBasedonthelaboratoryswellingexperimentsresults，theadditionalcompressionmodulus、theinitialtangentmodu

9、lusin1D、deformationmodulusandvolumedeformationmodulusin3DofexpansivesoilsinNingMingareformulatedKeywords：expansivesoils：swellingdeformation；swellingconstitutiverelationships；initialwatercontent；theverticalpressure；modulu