Description:
10th IStructE ASIA-PACIFIC FORUM ON STRUCTURAL ENGINEERING - AMAZING STRUCTURES
6 STUs (Structural) / 7 PDUs for PEs and CEngs - Approved
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CONFERENCE ORGANISERS
Chairman: Er, Dr. Ho Kwong Meng
Vice-Chairman: Prof. Pang Sze Dai, Er. Ms Sharron Ng
Secretary: Er. Reve Chin
Treasurer: Er. Leonard Heng
Forum Advisers: Dr. Lok Tat Seng & Professor Wang Chien Ming
Members: Er. Sam Tan, g, Er. Michael Sien, Er. Dr Tran Chi Trung, Er. Ms Jeslin Quek, Er. Mak Yew Cheong, Er. Steve Yeung, Er. Wijaya Wong, Dr Kong Kian Hau, Er. Mah Guan Pang, Er. Ms. Cong Zhengxia, Er. Ang Chee Keong, Er. Kang Jianhan, Ms Liu Ziyu
The IES/IStructE Joint Committee is pleased to organise the 10th IStructE Asia-Pacific Conference on Structural Engineering with a theme on Amazing Structures. The conference will feature an impressive list of lectures on amazing structures in the regions. There will be ample opportunities during coffee breaks and lunches for delegates to discuss the engineering challenges and innovative solutions directly with the principal engineers/designers of amazing structures.
LESSONS LEARNT FROM WESTERN HARBOUR CROSSING PROJECTS IN HONGKONG, CHINA AND ELEVATED RAILWAY VIADUCT PROJECTS IN INDIA
Western Harbour Crossing Project, Hong Kong
In the early 1990’s the Hong Kong Government embarked upon a major infrastructure development programme including the construction of a new airport (Chek Lap Kok) and new town on Lantau Island, expressway road and rail links to Hong Island, major combined road/rail bridge crossings, various tunnels and extensive land reclamation works. These were collectively known as the Airport Core Programme.
This presentation describes the design and construction of the Western Harbour Crossing, a 1.3km long dual three lane immersed tube road tunnel connecting Kowloon to Hong Kong Island, a BOT (Build-Operate and Transfer) project which was part of the Programme
Elevated Railway Viaduct Project in India
In May 2015 Continental Engineering Corporation (India) in Joint Venture with SAM (India) undertook the construction 29.7km of elevated railway viaduct with 21 stations for the Noida Metro Railway Corporation Ltd.
This presentation describes the construction technique deployed with full span pre-casting, transportation and placement of units to achieve the high rate of production necessary and the challenges that were met and overcome.
SPEAKERS PROFILE
Following a substantial career on infrastructure projects in the UK, Mr. Mundy moved to Hong Kong in the early 1980’s and was the Project Manager on various infrastructure projects including the construction of a 5 level station concourse structure for Mass Transit Railway Corporation, 2 new pumping stations and an intake tower structure with shafts and tunnels at Plover Cove Reservoir for the Hong Kong Government Water Supplies Department, a 4 km long twin bore dual lane road tunnel for the Highways Department, a 5.5 km long rail tunnel for Kowloon Canton Railway Corporation. Both tunnels connecting the Kowloon area to the New Territories.
In addition he was the Project Manager for the construction of Western Harbour Crossing, a dual three lane immersed tube road tunnel connecting Kowloon to Hong Kong Island, a BOT project part of the Hong Kong Airport Core Programme.
Additionally, during his career in Hong Kong, he was the Project Manager for the construction of the last two extensions to the Kwai Chung Container Port Facility: Terminal 8, a four berth Panamax container ship berthing facility with 55 hectares of backup area, and Terminal 9, a six berth Panamax container ship berthing facility with 65 hectares of backup area.
More recently he was an advisor to the contractor involved in the construction of a 30km elevated railway viaduct and stations from Noida to Greater Noida in Uttar Pradesh, India.
TALL BUILDINGS - OPTIMISATION APPROACHES
The design and construction of tall buildings pose multiple challenges for structural engineers. Whilst safety in design is a given, optimization, process can be approached in several different ways.
This Paper presents the practical and analytical approach Meinhardt adopts in optimising its complex and/or tall buildings projects. This is presented with reference to some of the projects engineered by Meinhardt.
SPEAKERS PROFILE
Dr S Nasim is the Group Executive Chairman of Meinhardt Group which employs approximately 4,500 staff in its 51 offices around the globe. A regular speaker at various local and regional conferences, he is actively involved in Educational, Professional and Statutory Boards related to the Construction Industry. His entrepreneurship and numerous contributions to Meinhardt’s rapid expansion internationally have earned him the prestigious E&Y Entrepreneur of the Year Award (Engineering) in 2012, the inaugural Distinguished Professional Engineer Award in 2014 (Professional Engineers Board) and the Distinguished Engineering Alumni Award in 2015 (NUS). In March 2017, he was presented with the ACES Lifetime Achievement Award.
JEWEL CHANGI AIRPORT, SINGAPORE
The Jewel Changi Airport development was undertaken by The Jewel Changi Airport Trustee Pte Ltd (JCAT), a joint venture between Changi Airport Group and CapitaLand. The design is led by a consortium of consultants comprising Safdie Architects, RSP Architects Planners & Engineers and Benoy.
The construction of Jewel was undertaken by a construction joint venture formed by Woh Hup and Obayashi Singapore. The distinctive feature of the development is the large-span diagrid roof that merges seamlessly into the façade of the building. The steel diagrid roof is approximately 200m in the East-West axis and 145m in the North-South axis with an approximate area of 25,000m2. Near the centre of the roof is the 11.5m wide oculus which features the world’s tallest indoor waterfall.
The roof was constructed using more than 4,300 solid steel milled nodes and almost 13,000 steel beams, each a unique component. We will briefly present the structural features of the roof, construction methodology and challenges encountered during the erection of the roof.
SPEAKERS PROFILE
Mr Lai Huen Poh has more than four decades of experience and has been involved in a wide range of projects both in Singapore and internationally. His track record spans notable projects such as Republic Plaza, the ITE College East and Central campuses, ION Orchard & The Orchard Residences, Terminal 4 and Jewel Changi Airport in Singapore; and the Hilton & Le Meridien Hotels and St Regis Hotel & Residences in Malaysia.
Mr Lai is a Chartered Engineer with the Institution of Civil Engineers, UK, a member of the Singapore Structural Steel Society, the Institution of Engineers and the Strata Titles Board of Singapore, an associate of the Institution of Structural Engineers and the Association of Consulting Engineers, a Fellow of the Society of Project Managers and an Accredited Checker with the Professional Engineers Board, Singapore.
Besides his professional qualifications, Mr Lai has served on several BCA committees such as Construction Best Practice, Structural Robustness, International Panel of Experts (IPE) on Construction and Prefabrication Technology, IPE on BIM Technology, Assessment Panels for the Construction Productivity Awards, Construction Excellence Awards, Design & Engineering Safety Excellence Awards and BCA-SGBC Green Building Individual Awards, culminating in his appointment to the BCA Board and BCA Academy Advisory Panel in 2011. He is also an advisor and external reviewer to Nanyang Technological University and was recently appointed to the International Panel of Experts on Lift & Escalators Safety. He is a Board Member of the Singapore Land Authority and also a member of the Pro-Enterprise Panel (PEP).
For his contribution to the nation through his service on the Strata Titles Board, the Ministry of National Development conferred upon him the Meritorious Service Award (Pingat Bakti Masyarakat) in 2011. In August 2018, he was conferred the Award of Public Service Star (Bintang Bakti Masyarakat).
THE TALLEST BUILDINGS IN SOUTH EAST ASIA - LANDMARK 81
Soaring 461m into the air, the Landmark 81 Tower topped out in Jan 2018 to become the tallest building at the banks of the River Saigon. The building comprises commercial, retail and luxury residential apartments with a gross floor area of 241,000m², forming a centrepiece of a new residential development.
Arup works with the architect and proposed a structural system named as bundle tubes which perfectly fit with the architectural expression of a bundle of bamboo canes to reference the area’s agricultural past and the nation’s much revered home-grown resource.
The 81-storey tower with three levels of basement is built in an area with exceptionally poor quality soil, presenting a number of challenges to the design team. The design solution adopted a thick raft supported on barrette pile, which allowed for maximum flexibility for the subsequent development of the design even as the foundation was being constructed. This project has a fast-track design and construction programme. The groundbreaking was on December 2014 and top-out in Jan 2018
This presentation will cover the development from concept design to construction of Landmark 81.
SPEAKERS PROFILE
Dr Goman Ho is an Arup Fellow and has been working with Arup since 1992. He was the first global leader for Arup Tall Buildings Skills Network and serve as the regional Seismic Skills Network. He was involved as PD/PM/PE for many tall building projects with an accumulated height approaching to 8 km including CCTV HQs in Beijing, the 460m Vincom Landmark 81 Tower in Ho Chi Minh City, the 528m tall Z15 in Beijing, the 597m tall Goldin Finance TJ117 in Tianjin and currently working on a 475m tower in Wuhan.
Besides that, he was also involved in 1 km long Beijing Capital International Airport Terminal T3, 320m span Beijing Olympics National Stadium (Bird Nest) and 148m clear span single layer roof for Yujiapu Traffic Hub etc. One of his interesting project is a 30m span single layer bamboo pavilion in Hong Kong.
He has published more than 30 technical papers in International Journal Papers and Conferences. Besides serving as reviewer for technical journals, the chief editor for “Tall Buildings in Asia” published by Routledge, a co-author of “Outrigger Design for High-Rise Buildings” published by CTBUH. He also contributed a chapter in a book “Techniques in Vibration Analysis of Structural Steel Frames”, published by Elsevier Applied Science and two chapters in “Design of Buildings and Structures in Low to Moderate Seismicity Countries” published by CNERC.
THE NEW SKYSCRAPER, TANJONG PAGAR CENTRE
Singapore’s tallest building built in more than two decades, Tanjong Pagar Centre (TPC) is strategically located in the heart of Tanjong Pagar; an area earmarked for rejuvenation as Singapore’s next business and lifestyle hub in the central business district.
The tallest building in Singapore, standing at 290m and 64-stories high, it was completed in 2016 and designed by world-renowned architectural firm, Skidmore, Owings & Merrill (SOM). Sprawling 157,738m2, the vibrant mixed-use development consists of 1.7m sq ft of Grade-A offices, residences, a business hotel, retail and sheltered event spaces, and a 150,000 sq ft urban park. It sits on a site bounded by a few small roads, the busy Tanjong Pagar MRT station and a number of other historic shophouses. A few features of the projects are:
Complexity in Building Geometry
At the 290m tall tower, the southern building face has a kink at Level 6 above MRT station with sloping columns angled to foundation below away from the station while above Level 6, the building face inclines at an angle to the commercial tower roof at Level 39. A huge kick out force at Level 6 is tied back to the main core wall for resistance.
Above the commercial tower is 25 storey residential block sitting on northern half which creates a counteracting force to the eccentric behavior at Level 6 and sitting on composite transfer structures at Level 39.
Construction Sequence at Main Tower.
In order to meet the construction schedule, the 64 storey tower has adopted full top down construction. Both 3 levels of basement and 6 levels of podium are framed with steel structures to speed up the erection. The top down method permitted erection of steel structures above each excavated level while steel structures at podium ensure ease of erection of non typical podium floor bottom up from Level 1 above MRT station. Basement 3 adopted pile raft system which was cast one go. When the basement was completed, the superstructures had already reached 15 storey, thus overlapping two complex activities to save construction time.
SPEAKERS PROFILE
Er. Jason Tan is Associate Principal in Arup Singapore Pte.Ltd. He is a registered Professional Engineer (PE), Singapore as well as Chartered Engineer (CEng) (EC), UK (2009). He joined Arup since 1994, and was involved in several major building and infrastructure projects of various functionality such as industrial, institutional, commercial, waste management facilities. Some of these projects include Singapore Flyer, Fusionopolis 1, Maringa Bay Bridge, Tanjong Pagar Mixed Development and SGH Community Hospital. His experience also covers geotechnical and foundation engineering from his deep basements projects and major infrastructure projects such as Downtown MRT line Extension. He was involved in Tanjong Pagar Mixed Development Project as a Qualified Person (structure) for the basement, hotel tower and the podium, starting from concept design stage till the successful completion of project, which has won several accolades from the industry.
THE RISING SYMBOL OF WESTERN CHINA, RAFFLES CITY CHONGQING, CHINA
The iconic Raffles City Chongqing has been under construction at a landmark site where the Yangtze and Jialing rivers meet. Composed of eight towers joined by a series of sky bridges, the super-scale mixed-use development city’s thriving present and future. The total development area is over 1.1m sqm. To address the challenges of the very slender tall towers and the multi-tower sky bridges in seismic region, innovative design hybrid outrigger system with structural fuse has been developed for the towers and friction-pendulum bearings has been designed to dynamically link the towers and the conservatory sky bridges.
We would like to provide a brief introduction on the development of the innovative hybrid outrigger system and the multi-tower sky bridge design which provide a structurally safe, cost effective, and buildable solution for the complex and challenging project.
Hybrid outrigger system with structural fuse
The two 350m high towers, accommodating offices, hotels and apartments, boast a slenderness ratio of over 9.5. We adopted an hybrid outrigger system with structural fuse which are designed for the use of high rise buildings in moderately seismic regions. The “fuse” component act as a “protector” to key structural elements, the steel truss outriggers and RC outrigger wall and corewall behind, with a reduced materials consumptions and hence materials cost, simplified the construction details and enhance the buildability.
The dynamically-linked conservatory sky bridge
The four 250m-high towers and the 300m long sky bridge on top are supported by an innovative use of friction-pendulum bearings (FPB) and dampers. The FPB provides the resistance such that the conservatory are fixed with the towers under various serviceability loadings (e.g. wind and temperature) while the bearings allows movements under severe earthquake and serves as energy dissipation device and the use of “pendulum” bearings and dampers provide the position self-restoring power.
SPEAKERS PROFILE
Mr. Penny graduated with the bachelor degree in civil engineering at the University of Hong Kong with master degrees in civil engineering and in real estate. Penny is a professional structural engineer and has been working in Arup Hong Kong, Shanghai office and more recently leading the Chongqing and Wuhan team. Penny is Project Director for the Chongqing landmarks project Raffles City Chongqing and Vanke 458m high tower. He has extensive experience in leading and managing multi-disciplinary engineering team for large comprehensive development in Mainland China and Hong Kong. He has been involving in projects including Raffles City Chongqing, Vanke 458m high tower, Shanghai Hongqiao Tiandi the HUB, ICC Hong Kong
THE WAVE, NANYANG TECHNOLOGICAL UNIVERSITY
Singapore’s Building and Construction Authority (BCA) has been spearheading the construction industry to raise productivity in the built environment sector as a major component in the national drive for productivity growth. This aims to generate manpower savings and create higher-skilled attractive jobs. BCA had identified and encouraged the adoption of game-changing construction technologies such as Prefabricated Pre-finished Volumetric Construction (PPVC), Mass Engineered Timber (MET) and off-site manufacturing for on-site assembly.
In support of BCA’s drive for construction productivity and in line with NTU’s sustainability policy, NTU decided and announced the adoption of MET in its new sports hall development in late 2013. A significant first local adoption, two-thirds of the building is constructed of engineered timber and boast of an arguably longest timber roof span of 72m in the world. Such extensive use of MET is the first of its kind in Singapore and Asia outside Japan.
The proposed Sports Hall seeks to showcase the use of MET as a viable alternative form of construction for the Singapore Building Industry. This game-changing technology will facilitate speedy construction and cut down the manpower on site as well as off site. It is also very environmentally friendly and sustainable with substantial carbon footprint reduction. The project incorporated extensive use of environment-friendly materials, efficient lighting features, optimised natural ventilation as well as the innovative passive induction cooling system to bring the development to higher level of sustainability. The project was completed in December 2016 and obtained BCA’s Green Mark (Platinum) 2015, Design and Engineering Safety Excellence 2018 and Productivity Award (Platinum) 2018.
The project garnered keen interests from the industry resulting with numerous visitation and technical presentations at various platforms with the latest at the World Conference on Timber Engineering in August 2018 in Seoul, South Korea. This topic will present the inception of the design iterations to achieve the wave-like roof form, the thoughts that led to NTU’s decision to adopt MET and the broad strategies taken to ensure successful implementation of such relatively new construction concept in Singapore. The presentation will follow through in-brief the design stage, construction stage and completion stage to provide the audience definitive understanding and appreciation of the concepts of MET and the achievement of the productivity and sustainability objectives set.
SPEAKERS PROFILE
Er Siew is the Project Director for construction of the Residential Halls at North Hill and Nanyang Crescent in NTU – both developments adopting PPVC – since 2014 to present. Prior to this portfolio, he was Divisional Director heading the building management division in ODFM-NTU. He has more than 30 years of experience in the local construction industry covering design consultancy, building management and project management of development projects, including wafer fabrication factories, commercial complexes, condominium, Changi Naval Base (Phase 1), underground cavern, marine deck of cruise center at Marina South and extensive experience in design/detailing of precast concrete.
For the past 4 years, Er Siew has been sharing ODFM-NTU’s hands-on practical experiences in the adoption of PPVC with government agencies, major developers, architects, engineering consultants and contractors in Singapore including construction industry leaders from Hong Kong and Japan. Major talks/seminars conducted include BCA’s SCPW in Oct 2015, IES’ Moving into the Next Era in Jan 2016, BCA’s Experiential Workshop on Prefabricating the Future in Oct 2016, Hong Kong’s International Consultation Forum in Enhancing Construction Productivity Mar 2017, IES Academy’s Short Course on PPVC Adoption in 2017 / 2019, Hong Kong’s International Conference on MiC Apr 2018 and as BCA Academy Adjunct Lecturer on NTU’s PPVC.
Er Siew was involved in The Wave’s critical structural design stage and approval for the wave-like roof timber structure in late 2016. He was leading the project team for the Environmental Deck-over Road (1500m2) using MET arch glulam and CLT for part of the Yunnan Garden Rejuvenation from design to tender stage but was subsequently aborted.
LUXEMBOURG PAVILION
In November 2013, the United Arab Emirates won the right to host the 2020 World Expo in Dubai. Lasting six months, the Expo will attract millions of visitors who will explore and discover pavilions, exhibits and cultural events staged by hundreds of participants including nations, international organizations, and businesses.
The theme for Luxembourg’s pavilion at Dubai Expo 2020 is “Opportunity”. It reflects the history of Luxembourg, its present and future. The proposed pavilion is like the country: small and ambitious, intriguing and reassuring, and above all generous and open. The Luxembourg pavilion is enveloped by an architecturally striking Moebius steel structure.
The presentation will describe the engineering challenges faced during design of the pavilion, collaboration with other disciplines, project status and its future.
SPEAKERS PROFILE
Saša is a professional structural engineer with over 25 years of experience designing and managing structural engineering projects across the Middle East, Europe, North America, North Africa and Central Asia. His reach project experience spans over many sectors including retail, airport, health, commercial and residential, water retaining and water treatment structures as well as pedestrian and road bridges, achieved utilizing all traditional construction materials and variety of structural forms.
During his career, Saša has worked on many architecturally challenging projects helping owners and architects realise their objectives and vision by developing structurally effective and innovative solutions.
For any enquiries, please call Ms Shelly Ng @ 6461 1222 or email: shelly.ng@iesnet.org.sg
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