Cầu tàu cừ trước thuyết minh

 
Lêi nãi ®Çu
  !" #$%"
&!%%'()*+  #  ,-!.!
$%"! /0&$1%'()2! #
(3 4!!&5 6! 4!!* 6! ,67!!08-#3*
6!0#09 $:();<67!= "=&>,? 9/%=07!*-
0@# 6!<A->#80B -, ,* 6!C8(D 8 @!=&E!F
0 %- GG  2!.!#%7 4!!$%" 4
/G%.!8.!/3%7&
 #H09 #-%)** 6! 4!! I= &
>(! #0-.!#J KL
KMLNF-!04!%O
KPL?  *? =  K%07Q!6//* 6!O
KRL? 0" 4!!O
KSLTU/F1 #%V9/O
KWLTUX * 6! 4!!O
KYL? 6!*-O
KJL5!'%*@&
A0 ,3"0 #H**Z**!8609 
 [/0\% ] H ,009 FK&
^Q U K  4 Cảng - Đường thuỷ3_ `U
a180B -4=(b PGS.TS.Đỗ Văn Đệ0;-c[/0\H
0d
N%"1 -
Phạm Mạnh Linh
Chương I: Số liệu đầu vào
NA_LT3E3efENNALJRYgWS M
 
1. Kết cấu bến:
 4!! I= &

2. Thông số của tàu:
!LWhhhaiO
7!(!Le

jMhklmO
7!!L

jMWlmO
e9(;= LJPhh6O
E== 04L
0
jY8Wlm
3. Số liệu thủy văn:
E1 = lm A
,
ln$m A
(
ln$m
E>
5
E>
5
E> A
(
A

A
( (
A
(

oS&W oh&J oP&Y MR MW P&P h&W
4. Số liệu địa chất công trình:
e=/ E=/06
7!
(lm
$-
γ
ln
R
m
ϕ
l0m

ln
P
m
M p$q/#b! K(r  R&k h&kh M&JM MP&h M&g
P Nq/#!Q(r7 R&W h&WW M&kW MW&h P&k
R Nq/#(r +0:# + h h&Rh M&gP Mk&h R&WW
Ghi chú: Lớp đất 1 đước tính từ đỉnh bến xuống dưới qua đáy bến một độ sâu h
1
.
5. Đặc trưng vật liệu:
" ERhh ,  0B X$#!L
0 @!*qL s
*
jMhl*tn 
P
m
0 @!qL s


jMRWl*tn 
P
m
E0!0L ^jP8g&Mh
Y
l*tn 
P
m
Fq/u
vv
 ,L s
#
jsw
#
jPkhhl*tn 
P
m
s
#(
jPMWhl*tn 
P
m
6. Tải trọng hàng hóa thiết bị:
6/L 6/P8.jR8hln
P
m
@"L4) F/8$+ UPW8/1  U=6TjPhlm8x
_Rh
Chương II: Tính toán các kích thước cơ bản và đề xuất giải pháp kết cấu

bến
M& Cao trình mặt bến:
NA_LT3E3efENNALJRYgWS P
 
#B09 Q 0@L
∇Ej∇E>o#
#0 #(18#6#jPlm
∇EjP8YoP8hjS8Ylm
∇Ej∇E>5o#
#0 #(18#6#jMlm
∇EjS8WoMjW8Wlm
∇EjW8Wlm
P& Chiều sâu trước bến:
7!$U!= 0$U!= F!$# ! '/*@%=
G &0, ,*0==  #!*04H.!0@%  0$U!(1
/y* &
# , + Q 00$U!= $#!L
_
h
joz
h
oz
M
oz
P
oz
R
oz
S
lm

0,L
== *! <04&
z
h
+ = (1 $1"- !(Q/,#"!*
07!%(,#@Q"(@ &
z
M
0(1/y 3!F!X%=#!&
z
P
0(1($,&
z
R
0(1/y%7F 0X=$1#0V==  #!* 3$%=
==  #!H0'!*= {&
z
S
0(1/y($#&
` 0@  0(1/yz
h
8z
M
8z
P
8z
R
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z
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z
M
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0
jh8hY&Y8Wjh8Rglm
z
P
jh
z
R
jh8MWlm
z
S
jh8Wlm
A'#% + "%=  @"# ,0$U!= = L
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e6_
h
jJ8gRlm&
R& Cao trình đáy bến:
#009 Q 0@$#!L
∇j∇E>5_

h
∇jh8JJ8gRjJ8PRlm
S& Chiều cao trước bến:
7! #= 09 Q 0@$#!L
_j∇E∇
_jW8WoJ8PRjMP8JRlm
NA_LT3E3efENNALJRYgWS R
 
W& Chiều dài tuyến bến:
7!(!09 Q 0@/)! % 7!(!e

%*  (1
/y(H + $#!L
e
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je
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e

jMhkoMWjMPRlm
Y& Kết cấu bến:
#& _-* 6!L
 4!!07"  %!*? = Sh×Shl m&
& TU03L
A= 7!(e

jMPSlm
# #S/U038€/U03(RM&

t#  /U03F?  *H[ ,7P &
& 5? =   8L
 L
  %!ERhh
•
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ƒ  09 - |%„&
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=   H/K( L Slm
 I= Lq/
5 6!0-(4(Rhl m09  0V3 €ƒ
 Rhh&
a4#LQjYhQghl m
a4( LQjYhQghl m
Chương III: Tính toán tải trọng tác động lên cầu tàu
M& Tải trọng do gió:
HPP>PPPfgWL
f /41 ( L i
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P& Tải trọng do dòng chảy:
HPP>PPPfgWL
f /41 ( L >
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jh8Wln$m
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R& Tải trọng tựa tàu:
/UF.(!0#H0'!<1#" (K () #
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 
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5 MJ8Wk h8JhR
S& Tải trọng va tàu:
† #!09 Q 0@H + $#!L
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A/4%!, %=q/ #F 0!6HPg
Ajh&MSln$m
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T1 L MS8W
TK//HL e"* +
I*.!X^
.
jRW8Pk*ˆ
NA_LT3E3efENNALJRYgWS Y

 
#09 Š
.
jMk&
/4$$%=q/Š

 #1 %#!* '/% Q 0@
H + L
Š

jµ&Š
.
0,L
µf_-$F#$/)! %%'-!=/B #@0-!&
e6µjh8W%=7B #$!B "&
a%'/4$$%=q/(1 %#U"L
Š

jh8W&Mkjglm
W& Tải trọng neo tàu:
 ()" (1 *q #(UH&
e1 H ()"? H09 Q 0@H + $#!L

…
N
&$ & $
=
α β
0,L
NF9? H @!1 8HRM>PPPfgW%=e


jMhk‹MWh 
jS&
α8βft, " #(UH09 6HRPL
…

ji
#
o…
ω
f#(,8(y  0"!&
NA_LT3E3efENNALJRYgWS J
 
NA_LT3E3efENNALJRYgWS k
N
.
N
β
α
N

N
%
 
NK0X1 H
#Qq? H0B3q/&
e1  ()" HP/KL/K%!, %$$%=q/
809 Q 0@H + $#!L

.

…
N

=

N N& $ & $= α β
%
N N&$= β
9/
α β
 …

8 N8 N

8 N
.
8 N
%
8
4 Rh Ph S Mg8MW g8kY k8hP S8YR R8RJ
5 Rh Sh MJ8Wk MM8Sk J8YP S8S J8Rk
I"#Q 0@09   0B 0 6!3 #? HH|"!
!}&3? HsMW&
Y& Tải trọng thiết bị và hàng hóa bốc xếp trên cảng:
6/L 6/P8.jR8hln
P
m
@"L 4) F/8$+ UPW8/1  U=6TjPhlm8
x_Rh&
6/

*#
"
(@%/K|-%'

(,#
l5>n
P
m
x
.
M
.
P
.
R
vv _fRh Rh Sh Yh
H 7!09 /UF  %p%„L
NA_LT3E3efENNALJRYgWS g
 
q
1
q
2
q
3
0.5q
1
A B C D
?%=(7# ,L
.

M
jRh&SjMPh5>njMPln
P
m
.
P
jSh&SjMYh5>njMYln
P
m
.
R
jYh&SjPSh5>njPSln
P
m
J& Tải trọng bản thân:
#9 #8=/066/%=//&X# G(
%!, %=q/8 , 7!ƒ*  ##  &
• Tải trọng bản thân của bản:
.

j&&γ

0,L
.

LU( ()
L* G0XljSm
L 7! #
γ


L*F9" #"
 .

jlSfh8Ym&h8R&P8WjP8WWlnm
• Tải trọng bản thân do dầm ngang:
.
(4#
j#&&γ

0,L
.
(4#
LU((4#
#L7(4#
L*  Iq/(=(4#0q/(=8#ƒ 7! #
(4#I0 7! #&
.
(4#
jh8Y&lh&gfh8Rm&P8Wjh8glnm
• Tải trọng bản thân do dầm dọc:
U((4( 09 .!%7'/!3  04!
 %09 Q 0@$#!L
T
(4(
jlf#m&#&&γ

 T
(4( 
jlSfh8Ym&h8Y&lh&gfh&Rm&P8WjR8hYlm


k& Các tổ hợp tải trọng:
 V9/ K0X1  6!*-$#!L
• V9/ KL
#Q!"83 0(38
3 0G3&
V9/ U _,# >H A# 1#
NA_LT3E3efENNALJRYgWS Mh
 
_M Q Q Q
_P Q Q Q
_R Q Q Q
• _-$F0| ' #L
9" # 6!*-!LM8hW
(/K|-F Q/LM8P
(,#LM8R
(!LM8P
g& Xác định áp lực đất chủ động và áp lực đất bị động lên tường cừ:
• Xác định áp lực đất chủ động:
a$#! I ,  0+"!0/1 06 0" I= $„
0*/3%L
M
   #lSW m
P
ϕ
< = × ° −
0,L
5  I I0 G06 #  &
ϕft, #$ #=/060V$#! I&
A 0/1 06X803(=ƒ$F&
` 0@ G06 #  L

E G0609 -"%„&
3
0
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3
0
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60°
4000400040004000
1150
3450
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P P
#
Rh M
# lSW m # lSW m
P P R
ϕ °
λ = ° − = °− =
Œ/1 06 0XH + $#!L
 #    M # 
 M
l & m &
−
=
σ = λ γ + σ −λ
∑
0,L
NA_LT3E3efENNALJRYgWS MM
 

γ

f9" #=/06/UF&


7!(=/06/UF&
e1 (? #=/06/UF&
λ
#
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` 0@  !0/1  0L
A==/$#! I "@  -$F$#!L
ϕjRh°
γjM8kWln
R
m
jhln
P
m
 σ
h
jhlnm
 σ
u
jM8klnm
• Xác định áp lực đất bị động:
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` 0@-$F/1 06@0L
P


/
# lSW m
P
ϕ
λ = ° +
e=/ e=/M e=/P e=/R
ϕ

MP° MW° Mk°
λ
/
M&WR M&Jh M&kg
Œ/1 06@0XH + $#!L
 /   h /  
 M
l & . m &
=
σ = λ γ + + λ
∑

/ 
#lSW m
P
ϕ
λ = °+
e=/ e=/M e=/P e=/R
ϕ

MP° MW° Mk°
λ

/ 
M&PR M&Rh M&Rk
5.!-$#!L
N

#



lm
γ

ln
R
m
.
h
lnm
λ
/
λ
/ 


ln
P
m
σ

ln

P
m
M fJ8PR h M8g h M8WR M8PR M8JM h
P fMM8hR R8k M8g h M8WR M8PR M8JM MR8MW
P fMM8hR h P8k h M8J M8Rh M8kW Ph8W
R fMS8WR R8W P8k h M8J M8Rh M8kW RM8RS
NA_LT3E3efENNALJRYgWS MP
oW8W
oP8Y
fJ8PR
fMM8hR
fMS8WR
e=/M
e=/P
e=/R
M8kn
MR8MWn
Ph8Wn
RM8RSn
Rg8Jgn
SM8WRn
fMW8WR
Œ/1  0
Œ/1 @0
 
R fMS8WR h R8WW h M8kg M8Rk M8gP Rg8Jg
S fMW8WR M R8WW h M8kg M8Rk M8gP SM8WR
• ` 0@1 '/!L
X  @1 '/!T


L
 Z
lm
=
lm
 #
lm
e1 '/!
lm
M h h&Y h&g h&PJ
P h&Y M&P M h&g
R M&P M&k M M&W
S M&k M&k M M&k
W M&k M&k M M&k
Y M&k M&k M M&k
J M&k M&k M M&k
k M&k M&k M M&k
g M&k M&k M M&k
Mh M&k M&k M M&k
g M&k M&k M M&k
Mh M&k M&k M M&k
MM h M&k M&RW M&PMW
MP h R&SY M M&JR
MR R&SY Y&gP M W&Mg
MS Y&gP Mh&Rk M k&YW
MW Mh&Rk Ph&gR M MW&YWW
NA_LT3E3efENNALJRYgWS MR
 
MY Ph&gR PS&hR M PP&Sk
MJ PS&hR PJ&MP M PW&WJW

Mk PJ&MP Rk&RJ M RP&JSW
Mg Rk&RJ Sh&MM M Rg&PS
Ph Sh&MM SM&kW M Sh&gk
PM SM&kW SR&SJ M SP&YY
Mh& Tính toán chiều sâu chôn cừ:
# 1 %0# (U-%„L
1343
1360
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
+5,5m
+2,6m

-7,23m
-11,03m
0,27
0,9
1,5
1,8
1,73
5,19
8,65
15,655
22,48
25.575
1,215
-12,26m
1,8
1,8
1,8
1,8
1,8
1,8
1,8
1,8
1,8
ƒ/K//0#Q 0@09   039$#!L

h
jMP8PYlm
^
/
wjYR8JMlm

s
#
jMM8YJlnm
t#$F0$U! #B
/
 
/   / #   #
^ •
 P8Mlm
P  
∆ = =
 
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 
∑ ∑
A'
/
jMP8PYoP8MjMS8RYlm
NA_LT3E3efENNALJRYgWS MS
 

MM& Tính toán nội lực cừ:
 I Larssen IV ,H*!F|(-LijPPhhl 
R
m
A=  $F*Ž!'$#!L
7! #LjMkhlm
7!jShhlm
 EH*  IL i
Q

jkkhl 
R
m
• Tính nội lực mômen uốn:
t@H<@/ 6!*-B09 Q 0@H 
+ L
( ) ( )
• #Q *
E E & E = + ∆ + ∆
0,L
E
#Q
H!F=6<@/B(X0L
E
#Q
jη
#Q
jMh&M8RSRjMR8SRlm
ηf5   1 0# 1 &

M
5  =6<@/0# (U&


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HPP>PhJfgP6

jh8kW
∆E
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* '/&? B G< # ,!0=6 #0# (U&
e6∆E
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∆f5< # 6!*-&
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E
•
jlMR8SR&h8kWohmlh8SohmjS8Ylm
• Kiểm tra điều kiện quay của tường quanh điểm ngàm với bản:
( . 
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• Xác định sức chịu tải của cọc theo nền đất
N+  @!=3 : T

jŠ&σo•&‘&τ
0,L
ŠL(-  8Šjh8MY
P
σL’$!6“  8σjSWhn
P
•L!%  8•jS&h8SjM8Y

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M& Xác định chiều dài cọc:
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P& Giải bài toán phân bố lực ngang:

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