Design and Construction of South Asia s Tallest Tower Lotus Tower

Size: px

Start display at page:

Download "Design and Construction of South Asia s Tallest Tower Lotus Tower"

Damon Morgan
5 years ago
Views:

1 Design and Construction of South Asia s Tallest Tower Lotus Tower Priyan Mendis, Professor of Civil Engineering, Director of ARC Center for Prefab Housing, University of Melbourne

2 Contents Introduction Construction Techniques Fire and Evacuation Analysis Wind Design and Analysis Concluding Remarks 2

3 Theme of the Tower The tower house is designed in the shape of a blooming lotus. The tower base is in the shape of a lotus throne.

4 Sub-structure Construction

5 Capping Beam Contiguous Piles Waling Beam

6 Post Tensioning

7 Tower House- Curtain Wall

8 Tower Mast

9 Fire and Evacuation Analysis

10 Fire dynamics FUEL

11 Fire dynamics Important characterisations of a fire Ignition/flammability Spread of fire/fire growth Flash-over point and fully developed compartment fire Smoke movement and toxicity

12 Fire dynamics External Internal

13 Changes to Highrise after WTC Planned Egress Strategies Fire fighter Elevators Pressurised lift shafts and core lobbies Occupant evacuation elevators Refuge Floors Better sprinkler designs and requirements

14 Fire and Evacuation Analysis Egress strategy Structure performance

15 Important factors in fire safety Numbers and types of fire starts Likelihood of fire suppression by occupants Reliability and effectiveness of alarm systems Communication systems Fire characteristics ( Flames and smoke)- rate and spread size Means of evacuation Number of occupants and their behaviour

16 Evacuation modelling Floor use of Lotus Tower Level Floor Use 0m 5m 10m 215m and 220m 225m Telecommunication and broadcasting museum Tourist service centre and shopping centre Conference centre Equipment room for TV/radio stations Banquet hall 230m Revolving restaurant 235m 240m Indoor viewing leisure area Outdoor viewing platform

17 Lotus Tower 350m South Asia s Tallest

18 Evacuation strategies for high-rise structures Case study of Lotus Tower

19 Case study of Lotus Tower

20 Case study of Lotus Tower Strategies using evacuation lifts From ground floor to highest level From 15 m to highest level From 15 m to 175 m

21 3 rd Floor of Tower House 21

22 Model of 3 rd Floor of Tower House

23 Results 23

24 24

25 25

26 Wind Analysis Advanced CFD

27 Verification and validation Validation studies: Lotus tower

28 Tower Mast

29 Tower Mast Wind Analysis 29

30 Concluding Remarks Construction challenges were overcome by precise design and planning Advanced Fire and Evacuation analysis led to rational design changes Virtual wind tunnel work based on CFD techniques was very useful 30

31 Acknowledgement Other Co-Authors Prof. Priyan Dias, Senior Professor, University of Moratuwa Dr John Holmes, JDH Consulting University of Moratuwa team led by Prof. Samitha Manawadu Civil and Structural Engineering Consultants (Pvt.) Ltd. Team Main Contractors Aerospace Long-March International Trade Co. Ltd; China National Electronics Import and Export Corporation 31

32 32

33 33 Fire performance of Façade Dr Kate Nguyen Leader of Innovative Fire Engineering Group Prof Priyan Mendis Director of ARC Centre for Advanced Manufacturing of Prefabricated Housing The University of Melbourne

34 COMMONWEALTH OF AUSTRALIA Copyright Regulations 1969 Warning This material has been reproduced and communicated to you by or on behalf of the University of Melbourne pursuant to Part VB of the Copyright Act 1968 (the Act). The material in this communication may be subject to copyright under the Act. Any further copying or communication of this material by you may be the subject of copyright protection under the Act. Do not remove this notice 34

such as Council materials NCP Building Prefabricated Modular elements Constructions

35 Innovative Fire Engineering Group From Materials to Structures Fire performance Buildings Tall on Innovative & high Conventional performance construction materials such as Council materials NCP Building Prefabricated Modular elements Constructions Façades Kate Nguyen From Experiments to Advanced Simulations 35

Fire performance of construction materials National construction code (NCC) International

No flaming from the specimen after the first 30 seconds 2) If the weight loss > 50% I.

T furnace & specimen = 0 Buildings 1) t t 0 s 2) T furnace 50 C Tall 3) T specimen 50 C

36 Fire performance of construction materials National construction code (NCC) International building code (IBC) 1) If the weight loss of specimen 50% I. T furnace & specimen 30 C II. No flaming from the specimen after the first 30 seconds 2) If the weight loss > 50% I. t t = 0 s II. T furnace & specimen = 0 Buildings 1) t t 0 s 2) T furnace 50 C Tall 3) T specimen 50 C on Council AS ASTM E136 or ISO 1182 Spec. 1 Spec. 2 CRK Kate Nguyen (kate.nguyen@unimelb.edu.au) Building regulations (ADB) Non-combustible 1) t t 0 s 2) m 50% 3) T furnace & specimen 30 C Limited combustibility 1) t t 20 s 2) m 50% 3) T furnace & specimen 50 C BS EN ISO 1182 and/or BS EN ISO 1716 (and EN 13823) (Limited combustibility)

World s first 18 m façade test AS 5113/BS 8414

au) In collaboration with SFS, CoM, ViG and BE

37 World s first 18 m façade test AS 5113/BS 8414 Fire performance of façades vertical fire break Test methods for fire spread on external wall cladding Kate Nguyen (kate.nguyen@unimelb.edu.au) In collaboration with SFS, CoM, ViG and BE Sponsored by LU Simon, Fairview Architectural and UoM

38 Fire performance of façades Kate Nguyen

39 Fire performance of façades First 18 m fire façade in the world Kate Nguyen (kate.nguyen@unimelb.edu.au) Temperature ( 0 C)

40 40

41 Innovative Fire testing methods 41

www.innovativefireengineering.net.au kate.

42 Thank you Dr Kate Nguyen/ Prof Priyan Mendis Innovative Fire Engineering Group

Extreme Fires!

Extreme Fires! Is History Repeating Itself? 1971 - Airlie House Conference International Conference On Fire Safety In High-rise Buildings Evacuation impractical protect in place Limit fuel load prohibit