Database Development for Road Tunnel Maintenance and Management by using Geographical Information Sy

1
Database Development for Road Tunnel Maintenance
and Management by using Geographical Information
System

• Nagasaki University Yoshihiko TANABASHI

Yujing JIANG
Mitsuhiro FUJII
2
Background of research
Occurrence of the concrete exfoliation accident
in a tunnel
Cost reduction by review of public works
Many points indefinite about tunnel maintenance
and management
Importance of maintenance and management more
than new construction
Clarification of tunnel maintenance management
Efficient tunnel maintenance management
3
Purpose of research
Exact and rational tunnel maintenance management
Present condition of maintenance management and a
deformation tendency need to be investigated
Creation of a tunnel maintenance management
database
Proposal to deformation analysis and prediction,
and maintenance management
4
Outline of the tunnel investigation

100 tunnels in Nagasaki are checked
Tunnel extension (m)
Tunnel extension (m)
Elapsed years
The data about 17 repaired tunnels are analyzed.
5
5
Present condition of deformation tendency
(back caves on lining)
100
Judgment3A danger
??B
90
??3A
Judgment2A
80
??2A
JudgmentA
??A
70
JudgmentB safety
60
50
40
30
20
10
0
Traditional method
NATM
More than 25 year
6
6
Present condition of deformation tendency
(Crack)
100
90
80
70
60
50
40
30
20
10
0
Less than 25 year
More than 25 year
7
Software used for this database
GIS software
All the functions in ArcDesktop are
contained A link with a deformation mechanism
analysis system is possible
(Data creation and management,a spatial relation
and analysis)
8
Database creation method
Digital Map 25000(Spatial Data Framework)
ArcInfo ArcMap display, perusal, analysis
Road central line Water area boundary
Nagasaki prefectural road way tunnel
Input
Basic information Shape data
Nagasaki prefectural office jurisdiction tunnel
Detailed information
Input
Tunnel with deformation data and repair data
Detailed data
Tunnel maintenance management database
9
(1)Reference from basic information
10
(1)Reference from basic information
11
(2)The shape data of tunnels
Shape data Standard sectional view Degree
judgment of health Linig development etc
12
(3)Reference from detailed information
13
(4)Display of detailed data
Detailed data Deformation photograph Present
condition photograph
Nagasaki prefectural office jurisdiction
tunnel Rouninnzaka tonnel Selected supan
14
Construction and a view of a database
Construction of a tunnel maintenance management
database
Reference from basic information and detailed
information Management of tunnel data, perusal
Prediction of deformation generating proposal of
rational maintenance management
15
The proposal of the deformation analysis and
prediction technique
1. Deformation investigation Deformation
investigation by evaluation of healthy degree
2. Deformation prediction Deformation
prediction by evaluating the strength degradation
of lining Deformation prediction by the program
using VBA
16

Evaluation of health degree
17
Degenerative situation of lining concrete
The uniaxial compressive strength(MPa)
Elapsed time(year)
18
Judgment by secular degradation
Nagasaki prefectural office jurisdiction tunnel
19
Crack analyzing system on lining concrete
20
Three primary colors
RGB value Three primary colors are
R(red),G(green),B(blue) Black colors doesnt
reflect any other colors White color can be
created by combining three primary colors
21
Example of Crack analyzing system on lining
concrete
22
Future view

• Accumulation of data
• Proposal to deformation tendency prediction and
  rational maintenance management

Deformation tendency prediction considering two
or more factors
Considering the risk management of tunnel
maintenance
23
(No Transcript)
24
Evaluation of elapsed year
Evaluation of elapsed year(point)
The uniaxial compressive strength(MPa)
The uniaxial compressive strength(MPa)
Elapsed year
Evaluation of uniaxis compression strength
25
Evaluation method of quantitative

y is a point evaluating of deformation A is
geology, method,thickness of covering,strength of
natural ground etc. what evaluating the factor of
tunnel deformation a is the weight to A.
26
???????????
27
Difference between NATM and sheet pile method
28
Example of Crack analyzing system on lining
concrete