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Table 4 Measurement index values

From: Quantitative analysis of the importance and correlation of urban bridges and roads in the study of road network vulnerability

node

Node degree

Approaching centrality

Intermediary centrality

Interrupt centrality

Influence

1

3

0.0204

10.0000

1.8333

2

4

0.0238

34.3333

/

/

3

3

0.0213

9.0000

1.6000

4

3

0.0182

4.0000

0.0000

0

5

4

0.0233

21.5833

5.9167

6

4

0.0238

23.8333

8.0833

7

3

0.0196

5.7500

0.0833

8

4

0.0204

6.5000

1.0000

0

9

4

0.0213

7.1667

0.5000

10

3

0.0182

4.5000

0.000

0

11

4

0.0233

22.1667

6.1667

+

12

4

0.0238

19.8333

4.8333

+

13

4

0.0196

10.1667

0.3333

+

14

4

0.0213

7.1667

0.3333

+

15

4

0.0238

23.5000

9.2500

+

16

3

0.0196

6.4167

0.2500

+

17

3

0.0204

11.0000

1.0000

+

18

4

0.0238

34.1667

33.6667

+

19

3

0.0213

8.6667

1.5000

+

  1. “+” in the column of “Influence” indicates that the closure of the node will have adverse impact on the bridge node (No. 2), “-“ indicates that the impact is favorable, and “0” indicates that there is no impact