Part 3 - CAIT

plantcitybusinessUrban and Civil

Nov 26, 2013 (3 years and 9 months ago)

95 views

1

(
-
38,
-
2)

V=25μ

45=42μ

H=70μ

2mm

4mm

4mm

4mm

4mm

4mm

4mm

(
-
44,4)

V=

μ

45=

μ
H=21μ

(
-
40,4)

V=58μ

45=

μ
H=55μ

(
-
36,4)

V=
-
34μ

45=45μ

H=121μ

(
-
32,4)

V=14μ

45=43μ

H=112μ

(
-
28,4)

V=371μ

45=168μ
H=319μ

(
-
44,0)

V=

μ
45=

μ
H=23μ

(
-
40,0)

V=37μ

45=

μ
H=86μ

(
-
36,0)

V=
-
14μ

45=36μ

H=425μ

(
-
32,0)

V=9μ

45=
-
26μ

H=338μ

(
-
28,0)

V=244μ

45=140μ

H=364μ

(
-
44,
-
4)

V=

μ
45=

μ
H=141μ

(
-
36,
-
4)

V=30μ

45=37μ
H=250μ

(
-
32,
-
4)

V=17μ

45=27μ
H=84μ

(
-
28,
-
4)

V=32μ

45=
-
133μ

H=364μ

(
-
40,
-
4)

V=
-
15μ

45=

μ
H=42μ

-
X

(
-
26,0)

Rozette Gauge φ50mm
was used

Data Analyses

2

(2,34)

V=
-
141μ

45=
-
42μ

H=36μ

2mm

4mm

4mm

4mm

4mm

4m
m

4m
m

(
-
4,36)

V=
-
78μ

45=
-


H=48μ

(4,36)

V=
-
158μ

45=
-
52μ

H=40μ

(
-
4,32)

V=
-


45=53μ
H=81μ

(4,32)

V=
-
56μ

45=
-


H=60μ

(4,28)

V=372μ

45=
-
152μ

H=
-
701μ

(
-
4,28)

V=
-
98μ

45=
-
60μ

H=
-
643μ

+Y

(
-
4,44)

V=
-
460μ

45=

μ
H=

μ

(
-
4,40)

V=
-
120μ

45=

μ
H=602μ

(4,44)

V=
-
347μ

45=

μ
H=

μ

(4,40)

V=
-
42μ45=

μ
H=
-


(0,26)

Rozzette gauge

(0,28)

V=
-
457μ

45=
-
49μ

H=332μ

(0,32)

V=
-
89μ

45=
-


H=27μ

(0,36)

V=
-
157μ

45=
-
92μ

H=33μ

(0,40)

V=
-
149μ45=

μH=789
μ

(0,44)

V=
-
212μ

45=

μ
H=

μ

y = 0.9815x + 1.057
R
2
= 0.9998
0
100
200
300
400
500
600
700
0
200
400
600
スキャナによる計測値(μ)
ひずみゲージによる計測値(μ)
1200dpi
線形 (1200dpi)
1
2
3
4
5
平均
標準偏差
補正値

(%)
ゲージ値
0
0
1
0
1
0
解析値
1
-2
2
1
2
1
1.32
2
2
1.60
ゲージ値
100
100
100
100
100
100
解析値
98
98
95
98
95
97
1.51
96
-4
-3.71
ゲージ値
201
202
202
201
200
201
解析値
203
201
205
205
201
203
1.70
200
-1
-0.33
ゲージ値
300
301
301
302
300
301
解析値
305
303
309
306
303
305
2.12
301
0
0.05
ゲージ値
401
401
401
401
401
401
解析値
410
411
412
412
413
411
1.09
405
4
1.07
ゲージ値
502
500
500
501
502
501
解析値
498
504
503
507
507
504
3.45
496
-5
-1.03
ゲージ値
600
600
600
601
601
600
解析値
612
608
608
613
612
611
2.00
600
0
0.03
1.98
2.20
1.12
絶対値の平均
400μ
500μ
600μ
1200dpi

100μ
200μ
300μ
Deviation

1.7%

Test Result

Concrete

Verification on Device Accuracy

Magnified
Image

Load test on a RC beam

ひずみ計測範囲
(西側)
ひずみ計測範囲
(中央)
Target

(West)

Target

(Centre)

West


Strain Distribution


X component only


→←
0.04

→←
0.03

0.45
→←

→←
0.21

→←
0.25

900

KN

700

KN

800

KN

600

KN

500

KN

400

KN

300

KN

200

KN

100

KN

West Strain Distribution

X
-
dir component only


400

KN

以下

Legend
・・・



Crack observed before loading


-




Crack propagate during loading



Blot out of the water during
loading

Unit

pixel


μ


500

KN

Test on RC beam

Test Summary



points bending

Up to
280k
N

12 Φ12.7
mm

strand
configuration

40k
N increments



700

PC beam dimension

Unit

mm

Main Scanning direction







100


150


200


250


Strain gage configuration

Smart Scanner Setup

Distance
from lower
fiber

Scanned area

Test Results

Verification

100
150
200
250
-100
0
100
200
300
Distance from lower fiber
(mm)

Strain



40KN

ひずみゲージ

新型装置

計算値

Strain gauge

Smart Scanner

Analytical

100
150
200
250
-100
0
100
200
300
Strain

μ


80KN

ひずみゲージ

新型装置

計算値

Strain gauge

Smart Scanner

Analytical

Test Results

Verification

100
150
200
250
-200
-100
0
100
200
300
Distance from lower fiber

mm


Strain



120KN

ひずみゲージ

新型装置

計算値

Strain gauge

Smart Scanner

Analytical

100
150
200
250
-100
0
100
200
300
Strain

μ


160KN

ひずみゲージ

新型装置

計算値

Strain gauge

Smart Scanner

Analytical

160k
N Crack occures

Bottom slab

Strain measurement

Strain gauge
configuration

Smart Scanner setup at the
lower section

Central line

60mm
gauge

30mm

gauge

Strain measurement


KN

40KN

80KN

120KN

160K

200KN


Crack width < 0.08mm

2
4
0KN

280KN


Crack width > 0.08mm

Pixel


μ


Scanned strain countour

Beam surface

Strain Measurement Method

Primary
direction

Secondary dir

Distance from
lower fiber196mm

Strain gauge

Smart Scanner setup

Results

Measured
Point

Load

KN)

Strain(
μ)

Error(
μ)

Average(
μ)

Gauge

Scanner

CL
-
x

80

-
12

-
13

1

2

120

-
18

-
21

3

160

-
24

-
22

2

200

-
7

-
8

1

240

110

113

3

CL
-
y

80

3

-
3

6

11

120

4

-
6

10

160

2

16

14

200

-
17

-
4

13

240

-
23

-
33

10

CL
-
z

80

8

10

2

8

120

11

16

5

160

14

17

3

200

24

50

26

240

45

39

6

Scanner and strain
-
gauge comparison

Test Result

80KN

120KN

160KN

200KN

240K
N

Measured strain contour

Background

Maintenance strategy based on long term monitoring
scheme to prolong structure’s life span

Runway D

Open October 2010


-

坨W牦㨠灲p捡獴c獬慢㬠晩敬搠e潵物湧n楮⁢整睥敮

-

偲潶P摥d桯h敳e景爠却楣欠S捡湮敲⁴c 楮獰散琠捯湣牥瑥n
condition

Tokyo International Airport

-

Serviceability assurance 100 years.

-

Maintenance planning from design stage

Holes for stick scanner have been provided
since construction stage

Landfill

Whar
f

Haneda

Runway D

Field
-
poured concrete in between two
precast concrete slabs

Crack

Inspection holes

Two types: φ22mm and φ26mm

PCa slab

Shear connectors

Field poured concrete

Steel beam

Pavemen
t

Stirrups

Stick Scanner

Modification for Tokyo
International Airport


Resolution

㌰つ灩


䑩慭a瑥r

φ22mm

ijPP


䵡砮敮杴h

㘱㕭6


坥楧桴

㤹㝧


䍯湮散C楯i

P䌠捡c搠
-

捡扬c

connector

Rear grip

Front grip

Guide rail

sensor


Total length

㠹ね0

Feature


䥴⁷潲歳⁦潲I瑷漠摩t浥瑥牳

φ22mm

φ26mm

Rear guide
ring

Front guide
ring

modifier

Adjust the focal
length of sensor

Feature


1
st

turn

物g桴Ⱐ獣慮‱a捹捬e

2
nd

turn

楮i敲e‹㕭洬5汥l琬t獣慮sㄠ捹捬c

3
rd

turn: insert 95mm, right, scan 1 cycle

Turn right

Turn left

Turn right

4
th

turn: insert 95mm, left, scan 1 cycle

Insert
95mm

Insert
95mm

Crack evaluation

φ22mm

0.08

0.05


0.03

Scale

(mm)


Scan

(mm)


Dev

(mm)


0.17

0.15


0.02

0.08

0.05


0.03

0.20

0.17

-
0.03

Scale

(mm)


Scan

(mm)


Dev

(mm)


0.34

0.40

-
0.06

0.31

0.30


0.01

0.38

0.17

0.35

0.25

0.03

-
0.08

Crack width

9mm

W=0.15mm

φ26mm