PowerPoint-presentatie

BIM based process miningEnabling knowledge reassurance and fact-based problem discovery within the AECFM industry

Graduation thesis for Construction Management and Engineering Msc by :Stijn van Schaijk

BIM based process mining , Enabling knowledge reassurance and fact-based problem discovery within the AECFM industry

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Always the same problems?

Always the same problems in construction industry3

Complexity in the construction sector?

Winch (1987): construction projects are amongst the most complex of all activities.

Gidado (1996): rapid increase in the complexity of construction processes.

Lots of specialists/experts/companies

A construction project team

A new construction project team

Large fragmentation results in

short learning curve

short learning curve

Knowledge loss9

As a result of knowledge lossSame problems over and over

As a result of knowledge lossWastes/spoilings

LEAN

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As a result of knowledge lossA lot of improvements possible in terms of quality, speed, efficiency and money!

Target of the research:

How?Knowledge reassurance with Building Information Modelling and Process Mining.

Learn from previous projects.Finding bottlenecks and planning deviation.

Develop a method with tools to reuse data from previous projects.

BIM construction industry IT systems data15

What is BIM?

BIM is data16

What is Process Mining?https://www.youtube.com/watch?v=7oat7MatU_U

Process mining research field18

Case studies: Construction process mining

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Case study: Construction design process mining

Case study: Construction design process mining

Analysis of the design process of a road project

Case study: Construction design process mining

Event log export from Relatics 140.000 events

Planned process of verification a specificationCreate/Import SpecificationConnect Specification to Upper/Lower Specification Assign Specification descriptionAssign control responsibility Assign Specification to Project phase Assign Specification to PersonConnect Specification to Work package activity 1Connect Specification to Work package activity 2Connect Specification to Work package activity 3Create work package (WPA) verificationAssign work package (WPA) verification to PersonAdd document of prove Add note to WPA verification

As-planned:

As-planned:

As-happend:Most extreme result: 1 specification had 1904 process steps

Most extreme result: 1 specification had 1904 process steps

Most extreme result: 1 specification had 1904 process steps

Conclusion case studyProcess mining analytics did us realize that we use our IT systems to store information, but those systems dont automatically facilitate an efficient process.

-Process engineer, contractor

More info? Read http://www.slideshare.net/StijnvanSchaijk/case-study-construction-design-process-mining

Case studies: Construction process mining

Continuous improvement cycle during construction projectsHow: Plan, (Autonomous-) Capture, Analyse and Reuse process data from construction sites

Finding and storing bottlenecks and planning deviation

Case study: Schependomlaan NijmegenPartners:Hendriks Bouw en OntwikkelingDreamfocus DronedRAAMAC

IFC model

Need for tools

PlanConnect planning to IFC Generate As-planned models

CaptureScan construction site with droneCreate As-built point cloud model (Structure from motion)Compare As-built with As-plannedMerge results with event log

1. Scan construction site with drones (Dreamfocus Droned https://www.youtube.com/watch?v=QbBf31bY0xw )

2. Create As-built point cloud modelStructure from motion techniques, how does it work?

Take a lot of images of an object

Around 300 pictures generated from drone movie

Identify points in the images that can possibly be detected in other images

Search for corrseponding points in other images

Compute camera positions and 3D point positions such that corresponding viewing rays intersect(Matlab script)

Result: As-built point cloud

4. Compare As-planned and As-built

Elements missing according to dronescanWeek 26 : 9 missing elements - windows and insulation parts.Week 27 : 50 missing elements - windowsWeek 28 : 89 missing elements - windows, insulation, brick facades, and prefab elements.Week 29 : 18 missing elements - windows, insulation and brick facades.Week 30 : 4 missing elements - windows.

Final event log3661 events tagged On time, or Too late

3. Analyse

Event log analyticsAs-planned vs As-builtDurationsProcess variantsBottlenecksSocial analytics

Analytics concrete floorQuery: Give me all the processes related to the material Breedplaatvloer

Concrete floors

Concrete floors

Social analytics Query: who is most influential on the project?

Social analyticsQuery: Which tasks has Timmerman 1 done at this project?

4. Reuse Tool: Planning consult with BIMserver

4. Reuse

Planning consult

Risk visualization

Planning advice and risk identification

Case study recap

Results & discussionFound reuse applications for as-planned BIMsAdvice: As-planned models contain valuable data, reuse them

Results & discussionUsed state of the art for process capturing.Advice: Allign planning and capturing tools.

Results & discussionBridged gap process mining and BIM

Results & discussionDiscovered potentials process mining in construction industry.

Read case study design process mininghttp://www.slideshare.net/StijnvanSchaijk/case-study-construction-design-process-mining Read case study facility management process mining:http://www.slideshare.net/StijnvanSchaijk/case-study-process-mining-with-facility-management-data

Further workProject level

Further workCompany level(Process oriented data warehouse)

Further workIndustry level

Further workReuse facility management data for new projectsIdentify risks in very early stages

Further workMore alignment between physical and digital world, so more data.Real time data reuse so failures can be predicted

You can reuse: Dataset:http://bit.do/DataSetSchependomlaan

ToolsEventlog generator: https://www.youtube.com/watch?v=LOJsHvGq-KE Planning consult: https://www.youtube.com/watch?v=nJTh_0Xmra0

Thesis http://www.slideshare.net/StijnvanSchaijk/building-information-model-bim-based-process-mining

Thanks to all who have helped

Questions?

Dreamfocus Droned