1C3 Design of bridges

Jakub Dolejš

Tomáš Rotter

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List of lectures

1. History and types of steel bridges2. Fundamental terms3. Basis of design4. Bearings, expansion joint, bridge accessories5. Bridge deck6. Plate girder steel bridges 17. Plate girder steel bridges 28. Plate girder steel bridges 39. Composite steel-concrete bridges 110. Composite steel-concrete bridges 211. Truss girder bridges12. Pedestrian footbridges13. Examples of bridge structures

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Objectives of the lecture 12

• types of footbridges

• construction arrangement

• ultimate limit states

• serviceability limit states

• examples

Objectives

Types

Arrangement

ULS

SLS

Examples

4

Types

Number of spans: single spanmulti spanspatial (curved)

Main load-bearing structure:girdertrussvierendeelarchcable stayedsuspension

Objectives

Types

Arrangement

ULS

SLS

Examples

5

Arrangement Objectives

Types

Arrangement

ULS

SLS

Examples

6

Arrangement Objectives

Types

Arrangement

ULS

SLS

Examples

7

Arrangement of cross sectionObjectives

Types

Arrangement

ULS

SLS

Examples

8

Arrangement of cross sectionObjectives

Types

Arrangement

ULS

SLS

Examples

Marked segregation

9

Ultimate limit statesObjectives

Types

Arrangement

ULS

SLS

Examples

Resistance of cross sections

Buckling resistance of members:

- compression members

- lateral-torsion

- interaction of M+N+V

Connections design

10

Serviceability limit statesObjectives

Types

Arrangement

ULS

SLS

ExamplesDeflection

Stress

Web breathing

Visual impression

Effect of wind

Drainage

11

Examples of footbridgesObjectives

Types

Arrangement

ULS

SLS

Examples

Arch footbridge

Praha - Chodov

12

Examples of footbridgesObjectives

Types

Arrangement

ULS

SLS

Examples

Truss girder footbridge

Praha - Smíchov

13

Examples of footbridgesObjectives

Types

Arrangement

ULS

SLS

Examples

Cable stayed footbridgePasarela Atirantada La Rosa 2003La Coruňa, Spain, span 36 m, length 156 m

14

Examples of footbridgesObjectives

Types

Arrangement

ULS

SLS

Examples

Cable stayed footbridgeMillers Crossing Bridge, Devon, EnglandLength 54 m, width 3,0 m

15

Examples of footbridgesObjectives

Types

Arrangement

ULS

SLS

Examples

Ijburg, Netherland

16

Examples of footbridgesObjectives

Types

Arrangement

ULS

SLS

Examples

Rostock

17

Examples of footbridgesObjectives

Types

Arrangement

ULS

SLS

Examples

Gelsenkirchen

18

Examples of footbridgesObjectives

Types

Arrangement

ULS

SLS

Examples

Boudry, Suisse

19

Examples of footbridgesObjectives

Types

Arrangement

ULS

SLS

Examples

Emmeloord, Netherland

Thank you for your kind attention

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Notes to users of the lecture

• This session is a basic information about actions on bridgesand requires about 60 min lecturing.

• The use of relevant standards of national standard institutions are strongly recommended.

• Keywords for the lecture:

footbridge, truss, beam, stringer, cable stayed footbridge, suspension footbridge, Eurocodes.