Geotechnical Innovation

Challenging the industry to embrace technology – highlighting key developments to watch out for in the next five years

GE Infrastructure summitTechnology and geotechnics seminar

18 May 2016

Mike DevriendtAssociate Director, Arup, London020 [email protected]

‘Challenging the industry to embrace technology – highlighting key developments to watch out for in the next five years

Assessing the way in which geotechnical projects will be designed and delivered in the future, how modelling and monitoring will impact the role of engineers and what the industry needs to do to embrace developments.’

Brief / scope of talk

1. Innovation and embracing technology

2. Next five years, modelling, monitoring and embracing developments

- Photo based condition monitoring

3. Design & delivery of geotechnical projects in the future

- Project work flow. Use of data integration software

- Use of observational method

4. Conclusions

Contents

1. Innovation and embracing technology 2. Next five years, modelling, monitoring and embracing

developments- Photo based condition monitoring

3. Design & delivery of geotechnical projects in the future- Project work flow. Use of data integration software - Use of observational method

4. Conclusions

1. Innovation and embracing technologyDefinition: “Innovation is the process of translating an idea into goods or services that meets a new or existing need and creates value”

Crossrail experience:

http://learninglegacy.crossrail.co.uk/wp-content/uploads/2016/04/11A_020_Innovation-Strategy.pdf

https://www.innovate18.co.uk/

DeBarro et al (2015) Mantra to method: lessons from managing innovation on Crossrail, UK. ICE CivEng proceedings.

Set up in 2012, largely missed civil engineering design phase


• Timing relative to procurement is very important

• Whole life cost should be a factor, not just CAPEX

Ground source heat tunnel lining proposal on Crossrail


ICE 2015 President’s apprentices innovation report

• Knowledge sharing environment and contractual setup to achieve this

• Equitable investment in ideas and ‘gain share’ incentivisation

• ‘Parallel running trials’, where innovative ideas can be embraced in a ‘failsafe’ environment

• Cost (CAPEX & OPEX), programme & safety – key metrics

1. Innovation and embracing technologyHS2 – investment in standards

• Impacts of tunnels in the UK• CIRIA C760, Embedded retaining

walls• Tunnel design PAS8810 CoP• Temp works PAS8812 Guide

• Do standards and project assurance stifle creative thinking?

• Streamlined process on projects for review of ideas and granting derogation

• Is project assurance processes agile enough?

Contents



3. Design & delivery of geotechnical projects in the future- Project work flow. Use of data integration software - Use of observational method

4. Conclusions

2. Next 5 years, modelling & monitoring

• Inspiration from other industries

• Collaborating with software and hardware manufacturers and academia

Image courtesy of ChaseJarvis TECH

2. Next 5 years, modelling & monitoring • Three general reasons for condition monitoring

Reason 2 – Asset protection role from nearby construction

Reason 1 – As part of operational phase asset management

Reason 3 - During construction handover

Leica Pegasus car mounted and backpack


• Topcon & Trimble developing and offering similar products• £££ expensive purchase or hire when compared with single or cluster camera• Increase of speed of capture vs deterioration of quality of image

- Shutter speed - Lighting

• Automation of processing results and presenting in summary format


SINGLECAMERA

CLUSTERCAMERA

Mesh / point cloud is generated from just photos


Can ‘unroll’ tunnel and present as 2D image

Machine learning of defects

Example from a whole tunnel reconstruction – Time 0

Example from a whole tunnel reconstruction – Time 1

Example from a whole tunnel reconstruction – Difference

HE defect assessment form


NR TCMI score LU element rating

• Challenge for technology to produce outputs in format to standards

• Should standards be updated to obtain benefit from technology?

Contents



3. Design & delivery of geotechnical projects in the future- Project work flow. Use of data integration software- Use of observational method

4. Conclusions

3. Geo project design and delivery

Talend,

FME (Feature manipulation engine),

SQL Server

Use of data integration software


Reader Transformer Writer


Information on asset type(building, utility, structure)• Dimensions• Location• Material• Properties

Ground movement assessment – input generation

Loading / unloading

Excavation induced+

Asset assessment

3. Geo project design and deliveryGround movement assessment – output generation

Assessment result- Contours- Pass / exceed threshold- Length where threshold exceeded

Output in shapefiles- Contours- Asset tags, depth, dimension, material, location, assessment result

3. Geo project design and deliveryUse of observational method

Peck’s Rankine Lecture 1969

Ab Initio• OM – Designed before construction starts• “the intended use of the Observational Method from

the inception of the construction phase” • Maximises material savings by using “most

probable” behaviourBest way out• OM – Introduced during construction• “construction has already started and some

unexpected development has occurred, or whenever a failure or accident threatens or has already taken place”


Use of observational method

Not limited to soil parametersSoil behaviourStratigraphyStructural behaviourConstructionSite use


Pre-planned contingecny


Approach of OM Ab initio (from the start)Optimistic Cautious

OM design work starts

Before construction

Starting design Most probable CharacteristicAlternative design Contingency plan Modification planBenefits Optimised Program and

support only

Choice between optimistic or cautious approach?

• Familiarity with ground conditions – case studies

• Contractual environment

• Appetite for risk some programme uncertainty

CIRIA C760 includes mechanism for using OM

Tottenham Court Road, Dean St (Crossrail)

• Somewhere between cautious ‘Ab initio’ and ‘Best way out’. Could more have been saved if optimistic ‘Ab initio’ approach adopted?


Crossrail Dean Street station box

• Process of getting derogation from Crossrail Engineering Design Standards, challenging. Feedback to streamlined assurance approval process

• Processing results & back analysis – link with FME

Contents



3. Design & delivery of geotechnical projects in the future- Project work flow. Use of data integration software- Use of observational method

4. Conclusions

4. Conclusions

• Look for inspiration from other industries

• Sound engineering knowledge combined with understanding of emerging digital capabilities

• Procedures for managing innovation through the project cycle

• Collaborative approach essential

Challenging the industry to embrace technology – highlighting key developments to watch out for in the next five years

Thank you….. Any questions?

Mike DevriendtAssociate Director, Arup, London020 [email protected]

Geotechnical Innovation

Documents

Transcript of Geotechnical Innovation