Remaining strength of corroded gusset plate connection in steel truss bridge and its repair using CFRP sheet





    !"  # $ "

  ' (  )* ' + '  ' ( ,- ' *.'  $  /.  .*.' -0  -.+ 1  0 /.2   2

  - ' -0  0 $ 0 *.'  $  (  3  *.'  $   ( +2  $ 

456 474829:; 9<<7; 9:



=-'   -0  ! .!

>-2-?- @.   '  $  A!(.0 2



>  2-' -B  C # >

2' B DEFG

2222 !

2 ! !!! "

#2!22 0 2!2 2

!22"$2 22! ! 

2 !!2!2"%!2&&

   2222"#2  

2!2 !22 "

#2 2 '2()*2 20 2!2 

!2+,*22!!!2 !

2+2 22"

-2  2-./ 2!!02  0 

22 22!(2

002!2&"#2 2 

! -./ 2 20 2!2 

!22 !2  2"12 

! -./ 2222!

2&2  2&22

!!"

2 2 2222!2  22

2! 34-56*!2"722

!!02  89:2;22 !!02   89:!2&"-22! !2

224-56223<=8<8>?9@9* 4-5624-563022022*"

#2 22 2 22!224-56

2 22  2 2!2

454678 777824245725759429879787884277752742

779789979527487987245445624456778725777978742877

547972998789779 427778274575!74484784456244887 9978742879729 648627 78  92 95482674898247

 78 77 92297988977547

245562689974727998742879889775479729 787 7277787428792 77427247



"#$%&'()*+,775 8279889775479729-74225940488624426

8742879 777279952748798724544562-2 77

2 !#!$%"&2'&(%2 ) ( 2 )&( '+%

%#$('2 2'&'&$$'"$$(#* (

*#+,"'& ''+2,'&'' 2 )&$+2$"& )'2&'#,

&$+2!-%2'".*/-01*-2 "213-4*45&"'2%#2%

%)& !%2%(#2 !&)'"&()&2 % 2 2)'"&(%'&)&',"#,'&,

*#+'(,2 ''#,$2#,&$+2!-%2'".*/-01*-2!"$'# '

"6 +2 # '( 72+2(6 )2 2 )!8)9 2+2',"% (),!2"%!%#2%

+2%! &$$'&)&'2+2#'# &(,+( ' +($2## (,

& 2)&2 %:2'&'22' %!2'2&( '+ $2(6;&((,!  (2#$' '

2  ,# !#,% ,&$+2!"213-4*45&!" '2&'"% ()2'%!

'' '2   %&)# '+($#'&)(($"22''2 12 2 $2'2 (%#2%

 +22 ,(#' "&(,+ 2'#"#''' +)2+ #'% "2 %'

" 2'& ,

*% ()82$$ 6=$,>%* '2&'7$'2  82$$ 0'(?0&#22 .'2( 7$'2 '%2 '2&'2  '$'%2$ '!2+(&(2 2)' %"& 2 )!2%

'((#"'2

*&((('=$#,'(' ''%#2%&$+2%##2'!":-0-4*62<

"-4-1-01*2#&!"01*.2.9>-&#2!"$'# '"6 +2 # '( 72+2(

6 )2 2 )!')'2'#,'&$+2!$'%2$'2 #,#20'# "2 (2''2 

" "2) &'# '&'&(,'&'2+2% %## '2 ''##,'2

#'&)(,  %

.,2 %' )'0'(0'&%'&(@',!8)9 2+2',"% (),!$+22 )#2'

" (, $"2 (% +2 # '*&(((2'' '#2 2''!'%! 

%(()&''8)9 2+2',"% (),!A$  9 2+2',"% (), 0%2 %!

9 2+2',"8 )!B2' #"2%$'2  ($&2 )#,& ,&(('' (( '9 2+2',0'""2   #(&$$',""

*#((,)'"&(A$ 3+ # '2'. &)&!.6C0%(2$"&((,$ 2 )

#2') '"#,'0,'&,2 A$ 

@'&' ''!$(,' #,2"!8)&, 2 &,!#2 "%2 %"((

'& '!( )2'#'8)9 2+2',"% (),! % '2 && ' 2 ) $'2 %!2%

DEFGHEIFJHIKLFMNHIFHFODPHNFRNSFDEFGIFQSKSHQTUVKFMQRWQSKKXFMHQPTZNHQNIFPUHE[FGIFPJDEF\QRPUSQL]UHGF^WRTF_ZHEWLF

 2"#2(,"2 )2'#'&)&',2'=$#,$$%2'2 '#,$ '!#,$ '0

2 0( "#2(,##" %&)2 )#'$&&'2'&,&(('2%''2' '#"2& "2( )(+&2 )''# (,



02 %(,!`a4 bc7a

0123467 





  





$%& !"!        ' '('() *18+,-6.9/19/0.-064       ' '(1() 223 467./4        5



:%& ;"! !!<=!>!="

1(1() A#04- 1364-4C        '1

1(1(1()A#04- 1301- 4-       '5 1(1(5()E41 -4/4B        '5

1(5( 443 1913 64-4C       'J 1(5('()K913 B6/43        '9 1(5(1( 4-1319/ 13B04-7 69      'L

2F) @ 13B04-7 69M 13/473 6919/- /.13-4 F   'L 1(5(5()K913 01- 4-       'N 1(7() K913 -4 319/ 69       1? 1(7('()@ B6/43 B49OF       1? 1F) @973.498467 13B04-7 6969 B.B361/    1? 2F) H61/4-81303 43 0     11

1(7(1()P6 6/4/B6/43M B49QRDR19/HF     15 1F) H61/4-81303 43 0     15

1(J() S1- -81913         1L 1(J('()K913 01- 4-       1T 1(J(1()84 36701- -8191344      1N 1F) H61/19/4-81303 43 0    1N 2F 9,361/81 9, 4     1N

1(J(5( 9,361/81 9, 4.9/4-647.338134B6/43671-4132-/,4  57 1(9() A13 69 6976-68132.8+39,- 6     59 1(9('()S-6064/413 69 69      59 1(9(1()P138.34/-4 319/ 69      5T

0123467 





  !"#$ %  &%# "!' () !&! 

*1*, 23440 13 46        7

*1*+*,844805499144        7

*1*1*,:644046794 4013       7 1; 44319.<=:        7 2; >19.409       7

*1**,23440 1341 4       ?

*1** 450909A949/52467<=:      B

*1*C*,:684 269.09A<=:       C+

*1*7*,D41/4.045        C1 1; 109A1/A43 069       C1

*1*?*,E61.09A 96.        C

**, 4/319..08/ 069        C

**+*,-54 477 0 7651305/5361.     C

**1*,-54 477 0 76.476 069     C7 1;, E61.19. 0813.043 43069     C7 2;, E61.19. 6743194.476 06943069    C?

***,-54 477 0 76 80> 6994866.4. 069  C?

***,=103/4869.0069        CF

**, <6983/069         71 G4449.03H<138/309A 967 434 069IGG8J0K;   7



L )  $!! %) '"!!  (%(% M%#' ()

*1*, 094608131913>0        ?N

*1*+*,@074 013 069       ?N 1;, G913081362P        ?N

8;, 43069904 64494 19.109     ?+ ;, @074 013 069       ?1

*1*1*,<138/30694684        ?

*1**,231543419..08/ 069       B1 1;, <138/34.56.43       B1 2;, =090443 1913>0       B1 8;, <138/34.4/36746464. 96.     B

**, =090443 1913>0        B7

**+*,G913>056.43        B7

***,G913>04/319..08/ 069      +N+

**, :1 81913>0        +N1

*C*, <6983/069         +N



0123467 





  !"#$    %&'

()%)*+, 69         %&'

()/)*0419 36-        %&4 ()/)%)*54- 4,13        %&4

16* 71,269724,4976,84-863924,:7;<=6     %&4

26* =,24,        %%&

-6* +28, 691-34 ,49      %%&

46* =,24,6,313394?819 43 8 9     %%%

7* @13394?819 43 8 9      %%% ()/)/)*0419 36-        %%%

()A)*76983 69         %%/



B  #!$!$      %%(

C)%)*76983 69         %%(

C)/)*;.,34,441,83        %%4



#"!D# $        %/&

0123467 









4 !31 7 6967"414674#9443 2$49"4%63$    &

4 & 3(866$4$3 6969443 2$4      &



4&  3(866$4$3 6969443 2$4      )

4& &*+48,49 (         

4& -.61$971,4         

4& /0"4+48,49+66"4361$9       

4& 01414$4,9"4 71,4       /

4& 21414$4,9"439371,4        /

4& 419143 699"4 +34       /

4& 5.61$9 869$69         0

4& 69443 1913(,6$43       0

4& )7913$473 6967"4 +34      5

4& 84$134 $ 69        5

4& &.61$$+3 4369"+92: 6913$473 6967"4 +34;*+48,49<=

4& - 6$1%967"4 67+3194$476 6967"4*+48,49< 44;,1#,,

4& /.61$$+3 4369"+92: 64$134 69"4 +34 69;*+48,49

4& 0.61$ 813$+3 4369"+92: 6"4 13+34"8394 ;*+48,49<=&

4& 2.61$249$9194369"+;*+48,49<=     &

4& 4 67+3194$476 6967+341419$4 "$16913,4,24<=   &

4& 5?913813 667 67+3194$476 6919$+"(813$476 6967*+48,49<; ,1#,,361$=         &&

4& 6.61$ 813$+3 4369"+;@9*919$.=    &2

4& &)11#,,361$ %449A?19$ABC       &2

4& &.61$249$9194369"+;@=      &2

4& && 67+3194$476 699+344699$4 "$16913,4,24@=  &2

4& &-.61$249$9194369"+67*+48,49*      &2

4& &/.61$249$9194369;*=      &4

4& &0 67+3194$476 699+344699$4 "$16913,4,24*=  &4

0123467 





4913813 667 673194476 6919813476 69674 34

4 !613 43691486 69136 1 4 4  "#

4$!613 43691471946 %4336 1 4 4 "

4&'4369 %4498666936 1941993618198118  "

4"(913 667 673194476 691486 69136  41

4"#913 667 673194476 69143 67471946 %4336 

41361        ")

4"'419936181981188 9613+4646 134143 674

4""!681328-3994 4864  16913    "&

4")36%8167684 7681383943681328-39    "&

4",.13834.!*1913813/0*1944 13/12681328-39  )(

4"19128-39 8       )(

4" .194667134869696748664 69    )(



4"#3484914        ),

4"044849247643619       )$

4""04.'22699 66948664 34    )$

4")2684 2699.'2        )&

4",041449439-714       )&

4"19143 6994 34      )&

4" !61448133 4369      ,,

4"$!61 673194476 694369      ,

4"&!6119436969499471846746 699416913 69 ,&

4"#(913146744849       (

4"##!61249919436943414194 416913424  #

4"#!61249919436967348493     #

4"#"!61469044 69.'2       

4"#)! 4674 34 69      )



4)#913813627 443342699131467.'2    (

4)06439#8)643        (

0123467 





4 464367 413       

4044439 67        

4!36"81678138369684        

4#4  69914%       #

44  69914&       

4'4  69914       (

4(4  69914       '

4%4  69914!       '&

4%%4  69914#       '!

4%&4  69914       ''

4%13834643674134       (

4% 443 1913 6436744334 91     (

4%!*61+4343 43       (

4%#6169674   69 "449,-19-*    (%

4% 443 1913 643678664 34 69 9   (

4%',3 )4476369      (

4%( 464367 41364718443  63)41 )31)4/  (!

4&*61048133 43       ('

4&%-913813 667 673194476 6919 813476 696748664 

4&& 361492467 9  43    %%



4!% 9 6768664 34 69     %%%



454678 777824245725759429879787884277752742... 777279952748798724544562-2 77

2 !#!$%"&2''&(%2... %(,!`a4 bc7a

0123467