Realistic Simulation Supports Expansion of the London Underground

By Akio

Dubbed “one of the most complex tunneling projects in the U.K.,” the Bond Street Station Upgrade (BSSU) project is being carried out to satisfy growing traffic demands within London’s busiest shopping district, the West End.

Upon its completion, Bond Street Station’s daily passenger numbers are expected to rise from 155,000 to 225,000.

A project this complex in nature has to consider the existing tunnel infrastructure, as well as the stress and strains imposed by the surrounding soil layers for the development of new tunnels.

Dr. Sauer and Partners was contracted to provide such tunneling expertise. The company took on responsibility for preliminary-to-detailed design and construction on all BSSU sprayed concrete lined (SCL) tunnels.

Tweet: The Bond Street Station Upgrade utilized realistic #simulation to test preliminary tunnel designs. @Dassault3DS #AEC http://ctt.ec/X4UWh+Click to tweet: “The Bond Street Station Upgrade utilized
realistic #simulation to test preliminary tunnel designs.”

 

Using FEA simulation, they were able to virtually test the ground through which the tunnels are being dug alongside the existing tunnel structures.

Model1.000

This realistic assessment enabled them to improve upon the preliminary design, as well as bring greater confidence to the overall approval process.

To learn more, read the case study, “Tunnel Vision” to see how realistic simulation plays an important role in tunnel excavation.

We also encourage you to download the whitepaper by Ali Nasekhian, Sr. Tunnel/Geotechnical engineer at Dr. Sauer and Partners, which highlights the merits and shortcomings of large 3D models in tunneling.

Tweet: Realistic #Simulation Supports Expansion of the #LondonUnderground @Dassault3DS @3DSAEC #AEC #BIM http://ctt.ec/dU4NO+

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Related resources:

White Paper: “Mega 3D-FE Models in Tunneling Bond Street Station Upgrade Project”

Case Study: “Tunnel Vision”

Collaborative and Industrialized Construction Solutions

SIMULIA Solutions page

Five Steps to Industrialized Construction

By Akio

This post is an excerpt from the paper, “Industrialization of the Construction Industry,” by Dr. Perry Daneshgari and  Dr. Heather Moore of  MCA Inc.

In today’s construction environment the value transferred to the customer for every dollar spent is only around 46 cents.  More than 40% of the tradesmen’ time on a job site is spent on material handling; most of the work on a job site is performed by highly trained and paid skill tradesmen.

Tweet: Over 40% of tradesmen’ time on a #construction job site is spent on material handling @Dassault3DS @3DSAEC #AEC #BIM http://ctt.ec/A4biv+Click to tweet: “Over 40% of tradesmen’ time on a
#construction job site is spent on material handling”

To achieve comparable results as have been seen in the manufacturing and other industries the construction industry has to take these same five steps:

1. Segregation of Work

The most important contribution of Fredrick Taylor’s work to industrialization of manufacturing was his ability to observe the skilled and unskilled tradesmen at work for a long period of time and being able to breakdown the conducted work. Once the work was broken-down it could then be managed by better management of time, location and contributing resources.

“Principles of Scientific Management,” by Fredrick Taylor

Once the work was visible and understood, it could be designed in the most optimal manner, and segregated among the resources available.

Translating the segregation of work to the Architecture, Engineering and Construction (AEC) environment of today’s world would be using the work breakdown structure from the skilled trades’ perspective. Skilled tradesmen need to break down the work based on the required sequence of installation.

These installation packages would enable creation of work packages to be built and assembled by non-skilled workers.

2. Externalizing Work®

Henry Ford’s contribution to industrialization was to use the approach developed by Fredrick Taylor and create the work packages separate from the point of assembly of the final vehicle. Externalizing Work® in construction is using prefabrication process and techniques to improve reliability, safety, predictability and productivity of the work performed and labor usage.

In a recent example, Chinese used this method to construct a 15 story building in 6 days, where the traditional methods would have taken 9 to 12 months. There were zero accidents on the job site and the building was certified for 9.5 Richter scale earthquake resistance.

Tweet: How did the Chinese build a 15-story building in 6 days w/ ZERO accidents? @Dassault3DS @3DSAEC #prefab #AEC #BIM http://ctt.ec/uddTq+Click to tweet: “How did the Chinese build a
15-story building in 6 days w/ ZERO accidents?”

3. Application of Statistical Process Control (SPC)

Application of SPC was declared impossible in the AEC industry, until the ASTM Standard E2691 (Job Productivity Measurement -JPM) developed based on the JPAC® (Job Productivity Assurance and Control) proved everyone wrong. The main purpose of SPC was to predict the outcome of a project early on, and measure the deviation from the expected output as an ongoing measurement of progress and correction.

As part of the Agile Construction® methodology, JPAC® uses the knowledge based developed based on Drs. Shewhart and Deming’s approach in using ongoing production data to predict the deviation from expected output and project the end of the job outcome deviation. Using SPC, JPM/JPAC® is able to issue early warning signals for any common or special causes of deviation.

Using segregation and externalization of work this tool will enable higher effectiveness of the labor usage both at the production and final construction assembly site.

4. Application of Lean Process Design to improve Labor Effectiveness

Toyota’s approach to Lean Manufacturing Process design helped the manufacturing industry to focus on reducing waste, and activities which did not transfer value to the final customer, reducing their cost of production.

Application of Lean Processes in construction will require the usage of the three steps explained above. To reduce waste the work has to be segregated, externalized and tracked.

5. Application of 3D Modeling and Simulations and Feedback

To reduce the cost of design, development, prototyping, manufacturing and product life cycle durability, the next step in the industrial revolution was to manage the required information in an electronic modeling format. Modeling and simulation of all the product development and life cycle management was the outgrowth of the physical modeling.

Modeling works as an enhancement of the physical understanding and design of the final product and its usage. The accuracy of the modeling can only be improved by a real life feedback process.

The feedback mechanisms in manufacturing are typically sensors, servos and synchros, where in construction due to its manual final assembly nature the feedback comes from the final installer.

Tweet: The accuracy of modeling in #construction can only be improved by a real-life feedback process @Dassault3DS #AEC #BIM http://ctt.ec/Gj32t+Click to tweet: “The accuracy of modeling in #construction
can only be improved by a real-life feedback process”

Short Interval Scheduling (SIS®) as part of the Agile Construction® process plays the role of the feedback sensor, servo or synchro. The “Lean Construction Solution Experience” developed by Dassault Systèmes is the models, simulations and life cycle management platform which enables the ability to get feedback from the final installer and model information within the work environment.

The Move to Industrialization

For the construction industry to match the productivity increases achieved by manufacturing the work has to be studied, segregated, externalized and commoditized. To reduce the cost and improve the productivity, lower-skill and non-skill workers have to be able to find work in the industry.

In order to effectively use a lower composite rate to reduce construction cost, lower-skilled workers have to be employed and used on the jobsites as well as off the jobsite in prefabrication or material management services such as vendor-managed inventory.

To manage the lower-skill levels the construction work has to be broken down into manageable chunks and the type of work has to be segregated. To allow lower skilled labor to contribute to work, the work has to be modularized and brought to the most common denominators.

This post is an excerpt from the white paper, “Industrialization of the Construction Industry,” by Dr. Perry Daneshgari and Dr. Heather Moore. Commissioned by Dassault Systemes and prepared by MCA Inc., this whitepaper focuses on industrialization of construction industry.

It maps out the construction industry challenges, relates the history of industrialization in the manufacturing industry, and summarizes five critical aspects and approaches.

Download the whitepaper and start accelerating the “Industrialization of the Construction Industry” through lessons learned from manufacturing and other industries.

Tweet: 5 Steps to Industrialized #Construction @Dassault3DS @3DSAEC #AEC #BIM http://ctt.ec/8JnV4+Click to tweet this article

 

Related Resources:

Optimized Construction Industry Solution Experience

Download Optimized Construction Solution Brief

White Paper: Industrialization of the Construction Industry

MCA® Website

Top 5 Challenges for Civil Infrastructure Projects in Emerging Markets

By Akio

The World Economic Forum recently reported that the current annual global infrastructure demand is US $4 trillion, a staggering number. Yet by 2025, that number is expected to jump closer to US $9 trillion, led in part by a global explosion of emerging markets.

Tweet: Annual global infrastructure demand is 4 TRILLION USD, and will more than double by 2025 @Dassault3DS @3DSAEC #AEC #BIM http://ctt.ec/7o9T7+Click to tweet: “Annual global infrastructure demand
is 4 TRILLION USD, and will more than double by 2025″

shutterstock_252973921.002

In China in particular, civil infrastructure projects are booming.

In early 2015, China announced the acceleration of 300 infrastructure projects this year, valued at 7 trillion yuan (US $1.1 trillion), as policy makers seek to shore up growth. China is investing more than 800 billion yuan (US $128 billion) in domestic railway construction alone in 2015, the same as last year’s final target. (Bloomberg)

A recent New York Times article reported that the world’s largest bridge, the biggest airport and the longest gas pipeline are current projects underway in China.

A 7.5-million square-foot hub designed for the still-under-construction Beijing Daxing International Airport is set to become the largest airport terminal in the world. Beijing’s new international terminal, designed by Zaha Hadid Architects and airport planning firm ADP Ingeniérie, is expected to accommodate an annual flow of up to 72 million people.

But projects like these aren’t just growing: they’re changing. According to a May 2015 article in the MIT Technology Review, these “megaprojects” have become multinational undertakings whose success often hinges on numerous companies and governments operating in concert, frequently in the face of political, legal and cultural divides among the participants.

Tweet: #Civilengineering

Click to tweet: “#Civilengineering ‘megaprojects’
are not only growing, they’re changing.”

The same article noted, citing Brookings Institute Vice President Bruce Katz, that,

“more than 83 percent of global gross domestic product (GDP) is expected to be generated outside the U.S. over the next five years. Because so much of GDP rides on the quality and availability of robust infrastructure (road, freight rail, seaports, air hubs, etc.), so that companies can create and deliver products and services when and where they are needed, this trend portends opportunities for the global construction industry in terms of refurbishing old, and building new, infrastructure.”

–“Major Infrastructure Projects Are Fueling New Opportunities –
and Risks – for the Global Construction Industry

As the scope and scale of these public works continues to grow, so do the pressures on those working to deliver these projects.

Top 5 Challenges for Civil Infrastructure 

We see five critical challenges facing those managing the high-profile, large-scale projects in these fast growing regions:

  1. Deliver faster – Speed to delivery time is shrinking, as pressure builds with so many other economic interests depending on use of this infrastructure. This means project managers must find ways to build safe structures faster than ever.
  2. Save moreCost-effective work remains key, particularly since public willingness to pay for public projects is higher when it’s evident that cost-effective measures are being used during construction.
  3. Manage the data – These massive projects generate large amounts of information from various BIM environments. If this information isn’t tracked and managed effectively, inconsistencies and errors occur.
  4. Communicate effectively – Owners, engineers, and civil designers on these projects are under more scrutiny than ever. They need to collaborate and communicate throughout the project – with each other, with stakeholders and with the public. They must have access to information and be able to share what they know with others, with full transparency.
  5. Think bigContractors hungry to take on these new opportunities need to show that they can think holistically, switching easily in scope from highway to bridge planning, or rural to urban infrastructure work, and can manage a full range of challenges. The popularity of new construction styles, such as design-build, shows that owners are looking increasingly for “one-stop solutions” to design and construction.

Addressing these Challenges

Dassault Systèmes Civil Design for Fabrication Industry Solution Experience, announced this month, sets out to solve these challenges. The software, built on the collaborative 3DEXPERIENCE® platform, enables simultaneous real-time access to design models and project data — from anywhere and across different disciplines.

This creates an interactive community of owners, engineers, and civil designers who can work in parallel, share data, and build quality and efficiency into every project.

Tweet: Imagine a software platform that enables real-time access to design models and project data @Dassault3DS @3DSAEC #AEC http://ctt.ec/OXd92+

Click to tweet: “Imagine a software platform that
enables real-time access to design models and project data”

Designed to address the challenges of large-scale, sophisticated civil infrastructure projects, Dassault Systèmes Civil Design for Fabrication Industry Solution Experience moves infrastructure projects into a single platform for all civil engineering design data. This ensures that everyone on a project is using the most current information.

Applications and tools for collaboration and native design extend across concept, design, engineering, fabrication, and construction. Design models can be extended into fabrication to reduce waste and re-work found in the traditional design and construction process.

Using the pre-formed catalog, real-time site data, and information imported from a range of platforms, users can easily create highly complex and infrastructure projects of any size.

Tweet: Top 5 Challenges for #CivilEngineering Infrastructure Projects in Emerging Markets @Dassault3DS @3DSAEC #AEC #BIM http://ctt.ec/VAhj1+

Click to tweet this article

 


Related resources:

Press Release: Civil Design for Fabrication Industry Solution Experience
Brochure: Civil Design for Fabrication Industry Solution Experience
Website: Civil Design for Fabrication Industry Solution Experience



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