Page 157 - 《水资源与水工程学报》2023年第1期
P. 157
! 1# L M, <: NOP9 - QRS#®KTYU+VWXY,BC 1 3
5
seswithheterogeneousdistribution;sectionsofslopeplatewhicharevulnerabletofrostheavingdamage
arelocatedatthepositionsof30% -42% slopeplatelengthawayfromtheslopetoe ,andthoseofthe
bottomplateareintheperipheryofthebottomcenter,thesefindingsareconsistentwiththefieldinvesti
gationresults.Aparameteranalysiswascarriedoutonthetangentialdisplacementofeachsectionand
tangentialadfreezingforcewithdifferenttangentialstiffnesscoefficientofcontactinterface k.Theresults
p
indicatethatthemagnitudeofbothtangentialdisplacementandtangentialadfreezingforcegraduallyin
creasefromtheslopetoptotoe ,whichiszeroontheslopetopandmaximumontheslopetoe.whenkis
p
small ,boththetangentialdisplacementandtangentialadfreezingforceshowthetendencyoflineardistri
bution;askgraduallyincreases,bothofthemgraduallydeviatefromlineardistribution,andthelarger
p
thek,themorenonlinearthedistribution.Thestudycanprovidereferencesforfrostheavingresistance
p
designoftrapezoidalcanalsincoldregions.
Keywords:trapezoidalcanal;frozensoil;frostheave;mechanicalmodel;Winklerassumption;non
lineardistribution
ü:。¤hfCÃÄ»º$)Ð=5¥¨"e
1 ./01
Ä6ÁÐ=´·¤ñò¨¦;~ÁM\´。d
¥%&Ì8ðµëup#<t'
b, UU+) [7-12] ø, b¾Cj - \
):P^_, `OP¾1¬Z¾\]。wâ ]MehfÄX:Ìoà/cÓ, Jhf,Q
upj¤C¤+¸M÷5+ü: Winkler ¬ [13-14] , ÃMøð\]hnþô¹
zC。¾a¬6íç!\]¤¦C¤´¥ø f:2oÄ6ÁÃÄ, 3ë"ehfoà
Ö¤M÷zC, ¦¾¦C¤¬6Èi,-、 } ¾U¡uÚs}»µ&, ·¤Þ=½hfC
µ@, `e~ÌC¤\XÄe· ÃÄ»º, Q¤Ï¿´»º¬, §`.[
¸ÿr'+^ [1-5] 。 ߤ3, Þ[¢ûM\、 !。
[6]
ËK_ ÊËÌÎA0ðÁ_B«Rp?
~q<j6b¾, jC¤Úáo“ ø 2 BCYÈK
9vi” ÈQ.»º, ²^\¨8iá, ¦É [7,9,15]
UU+^̸¾Á¬¥ì+b. ,
àÅ=ÿC¤¹v.\]³lÖݱOf
b¾Ì½·¸、 jM¹v'¤%&, \]³
»ºÎp。³`Á] [7] £5C¤¹v.
lC¤Äìfb_Z
ùeÃ;øð1» ¡
ÜlÃOÖÝÖ$:26、 :2ñò, ð Ï
¹, \]-uv11oCD$%½C¤Ð
@fC¤ÄXhfCÃÄ¿´»º¬, ëh [16-19]
OPa 。
fCÃþôt¹¾gù]Tÿ.C¤Ä
2.1 '[\
[8]
[9]
e»¼ÃÄe。5fr] 、 ÅZ] È
+) [7-12,16-17] f%&}", o51v
5ÿ5ý\].C¤Äe»¼µ@。ò^
] [10] Ìm"¾1%½.C¤Äe»¼µ ¬:
(1) îf¬i
`ìf¬, Äe»
@·¸ÿÔ, £5b C¤zC³+5ö
l、 ö2
C§。3±] [11] *ÿ“ È ¼seêæ.。
aú” 9 U.C¤Äe»¼ÑÒ, Ì\]l ( 2) \]C¤ê.¾9ê., cÖ¿´
¿)MQM\°áÈ5ÿæ。fÐ , Þñû<\。
[12] ( 3) CjX\]^ehf:2oÝÖ Winkler
] ÿ=ݾ1%½v.C¤Äe
。åbÞà, C¤Äe»¼:5+^áã ¬ [13-14] , J^ehfÄX:Ìoà/cÓ。
ä<t(<, c-åɬ¿´@fC¤Ä+ E 1 ¾.ùe^EfC¤Äe»¼k
^˨\]Ã;1» ¡¹øð³M÷ E。ÌÇÿþôùe, ¦²^:
@fC¤Äö¿´»ºæ.+^, ¢ûM}"。 2þô, §\]¾l@fC¤Ä:2o
¤, -)iônìCj - \] Äk=?。E 1 v m²³Ê,s ²³H,e
^ehfCÃÄ¿´»º¬, X%&}"ø ²³z; Êÿf²、 zz、 H²f