Page 153 - 《水资源与水工程学报》2024年第6期
P. 153
!35 "!6 # & ' ( ) & * + , - Vol.35No.6
2024 $ 12 % JournalofWaterResources&WaterEngineering Dec.,2024
DOI:10.11705/j.issn.1672-643X.2024.06.15
123456789:';<=>?@AB
1,2 1,2 3 3
! " , #$% , # & , ' (
(1. hij& ,klemno&p, +, hi 361005;2. hij& +,-qremnostuvwxyz{,
+, hi 361005;3. ./01|}~, T
518054)
C D: BCrqr
'OKno, ,qrJK
'O`P
QLM。 Laplace 、Fourier ¡N¢b Stehfest s£¢¤¥y¦§¨©ª«ª。¬©ª
«ª®¯°±ª²³´ COMSOL µ¶,s£, ·¸z¹©ª«ªº»R。·«©ª«ª
¼s, ½¾¿À: Á
'OK¾, ÃÄÅÆÇÈÉÊKËM, ÌÃÍÎÆÏÐÊ
KËM, ,Ñqr
'OKÒÓÔÕÖ× 0.6, ØÉªK; ÙÚ
'OÛÜÔÝj, q
r
'OÞÏjÊKßàáâãKÞä; eåLæçsèéêRIJKLMëj, ìyíKî6Æ, ï
ðñeåLæçsèéêR。
EFG: qr; K; `PQLM;
'OÛÜÔ; eåèéêR
HIJKL:TV139.1;TU753 MNOPQ:A MRSL:1672643X(2024)06014908
Unsteadyseepagemodelfordeepfoundationpitwith
suspendedcurtainincoastalarea
3
3
1,2
1,2
MENGXu ,CHENDongxia ,CHENBo,YUANBo
(1.SchoolofArchitectureandCivilEngineering,XiamenUniversity,Xiamen361005,China;2.FujianKeyLaboratoryof
DigitalSimulationsforCoastalCivilEngineering ,XiamenUniversity,Xiamen361005,China;
3.ChinaRailwaySouthInvestmentGroupCo.,Ltd.,Shenzhen518054,China)
Abstract:Toclarifytheinfluenceofoceantidalfluctuationsonthedewateringengineeringofdeepfoun
dationpits,anunsteadyseepagemodelforthedeepfoundationpitwithsuspendedcurtainundertidal
fluctuationswasestablished.ThesemianalyticsolutionofrealdomainspaceisobtainedbyLaplace
transform ,Fouriercosinetransform,inversetransformationandStehfestnumericalinversetransformation.
Subsequently,thesemianalyticsolutionisdegeneratedtoaknownsolution,andanumericalmodelises
tablishedbasedonCOMSOL ,soastoverifytheaccuracyofthesemianalyticsolution.Then,theinflu
encingparametersofthesemianalyticsolutionareanalyzed,andtheresultsshowthattidalfluctuations
affectthedewateringeffectofthefoundationpit,peaktidelevelreducestheinfluenceofthepumped
well,whilelowtidelevelintensifiesitsinfluence.Wesuggestthatthewatercurtaininsertionratioofthe
coastalfoundationpitshouldbenolessthan0.6toalleviatetheinfluenceofthetideonthedewatering.
Withtheincreaseofthedimensionratio ,coastalfoundationpitsneedtoincreasetheamountofwater
pumpedtomeettherequirementofdewatering.Theanisotropyofsoilpermeabilitycoefficienthasagreat
influenceongroundwaterseepageandshouldbeconsideredinthedesignofactualdewateringengineer
ing.
Keywords:coastaltidalfluctuation;suspendedcurtain;unsteadyseepage;dimensionratioofdeep
foundationpit;soillayeranisotropy
!"#$:20240606; %$:20240724
'()*: !"#$%&'()*(12372201); +,-#$%&'()*(2021J01010、2021J02003); ./01 2022 2%
34567)*(202208)
+,-.: 8 9(2000—), :, ;<=>?, @ABCD, EFGHIJKLMN'OPQRBC。
/0+,: STU(1976—), V, +,WX?, YA, Z[\], @AD^_, EFGH`abcde'ONfgPQRBC。