ASE Conference Presentation

West Point Bridge Design Challenge

A demonstration of science in use

Agenda

• Who am I?

• Institution of Civil Engineers

• How science is used… in civil engineering

• Bridge basics for non-engineers

• West Point Bridge Design Challenge

• Pasco Bridge Kit

Who, me?

Who, me?

• Chartered Civil Engineer

• Over 20 years experience

• Senior Planner with Carillion plc

• Chairman of the ICE Essex branch

• STEM Ambassador

• Social Media (web 2.0) advocate

Who, me?

• Construction Careers Fair

• Westcliff High School for Girls

• 21st April 2010 from 4pm

• Careers Presentation

• Construction organisations stands

• ICE evening meeting after

• Dr Jean Venables OBE

• All welcome

ICE

ICE

ICE

Essex Branch Objectives

• Arrange an annual programme of activities of a professional nature, including meetings, seminars, courses and debates• Arrange visits to works of engineering interest• Promote, develop and expand public perception of the role, duties and achievements of Civil Engineers• Promote civil engineering education in local universities, colleges and schools

We are here to help you – just ask!

Science

• Experimental Science – scientific research

• Material properties

• Structural behaviour

• Environmental research

• Applied Science – application to specific human need

• Structural design

• Geotechnical design

• Process design

Science

Structural Engineering (Applied Science)

• Science applied in civil engineering

• Analysis and design of structures that support or resist loads

• Design of buildings and large non-building structures

• Based on physical laws and empirical knowledge

• Uses relatively small number of basic elements to build up structures that can be very complex

Science

London 2012 Aquatics Centre roof 160m long 3,000t of steelPhoto curtosey london2012.com

Bridge Basics

Bridge Basics

SHEAR SHEAR

TENSION

COMPRESSION

LOAD

Simple Beam Bridge

Bridge Basics

TENSION

LOAD

Simple Truss Bridge

COMPRESSION

Bridge Basics

Tubes / bars / triangles / squares – a Blue Peter moment

Bridges

Bridges

Bridges

Tacoma Narrows Bridge, Washington State. 1940

Bridges

East London Railway Bridge GE19 – 1,300t

Bridges

Bridges

Bridges

East London Railway Bridge GE19 – 1,300t

Bridges

A14 Milton Footbridge, Cambridge – 200t

Bridges

Bridges

Millau Viaduct, France – 20042,5km long 343m high

Bridges

Bridges

Bridges

Bridges



• Aim of the contest is to use the West Point Bridge Design 2010 Software to design a bridge that can carry a given loading using the different available elements and materials for the least cost

• Qualifying Round for the actual West Point Academy organised competition closed on 5th March 2010

• The best design submitted during the Qualifying Round had a cost of $136,874.77

• The software is free to download and use and does not require entry to the West Point Academy Competition



You can chose to create a new bridge design or load a sample


You can select from a number of sample designs


Which gives you an instant bridge which you can work on


Or you can create a new bridge design from scratch


Start by chosing deck elevation and support types


Note that digging is (relatively) cheap


Then select your deck material and loading


And chose your template (if you want one)


Tell it who you are and give your design a number


Which just leaves you to design your bridge


template

joint

member

memberproperties

drawmember

drawjoint

selectelement

eraseelement

There are very few basic design tools and items to use


And you can soon end up with a basic bridge design


testbridge

Let your creative side get carried away however makesure your model is not unstable – can you see why?


testbridge

When you are happy you can test your bridge


testbridge

Looking good my friends……


Back to the drawing board


Look to see where the problem lies in the load test results table


And fix it by changing the member properties

Select members

Change material / type / size


Success (but at what cost?)


$356,327.71

Note cheapest in the 2010 qualifying round was $136,874.77

Review the cost calculation report for the cost breakdown


Review the member properties and load test results (for diehards)


$295,048.74

Iteration 12save print

Keep fiddling until you get a cheap bridge (that stands up)


much bigger sagnot so nicefor bridge users

A cheap bridge may be a bit scary to drive over though

ULS / SLS


My son Tom will be a scientist or engineer – note centre pier


Tom doesn’t really take the cost of the bridge into account (he’s only 8)


My daughter Lizzie is more the creative type (its cheap though)


She may turn out to be an Architect


But she does lose interest rather easily and go a little too far


It doesn’t fall down (but does cost $7.5 million


Some other designs from the web



Pasco Bridge Kit

Pasco Bridge Kit

Pasco Bridge Kit

Thank you

Contact: Andrew KenyonEmail: [email protected]

Tel: +44 (0) 1375 644961Mob: 07764 834418Twitter: @Noynek

www.linkedIn.com/in/andykenyon1

Education

ASE Conference Presentation