Hyder Consulting

Melbourne, Australia

Hyder Consulting

Melbourne, Australia
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Packer D.,Baulderstone | Masters P.,Hyder Consulting | Riordan G.,Hyder Consulting
Proceedings of the Institution of Civil Engineers: Civil Engineering | Year: 2013

Port Botany in Sydney is the second largest container port in Australia. A recent expansion project has increased the number of berths from six to 11, which involved A$515 million (£340 million) of civil works including 1850 m additional wharf face formed by 200 concrete counterfort wall units, and 63 ha of reclaimed terminal land created from 8 m3 million of dredged fill. This paper describes the design and construction innovations developed for the 640 t wall units including using structure-soil interaction modelling to refine applied loads, finite-element modelling to assess concrete stresses and control cracking, durability design for a 100 year design life, and construction using precast methods and assembly.

Lume G.J.,Hyder Consulting
From Materials to Structures: Advancement Through Innovation - Proceedings of the 22nd Australasian Conference on the Mechanics of Structures and Materials, ACMSM 2012 | Year: 2013

Cable net support structures present several difficulties in design and analysis due to their complexities. The analysis of an existing cable net structure for the design of new structural components reveals even greater challenges. The Showground stadium located at Olympic Park, Sydney is a 15 year old cable net supported stadium that has recently been upgraded in order to provide two newsections of grandstand seating, the southern hemisphere's biggest video scoreboard and updated amenities. During this upgrade, the end tie-down cables that supported the existing roof needed to be removed and relocated to positions on the new structure. It was required to analyze the existing cable structure using advanced finite element modeling techniques in order to determine the cable forces involved in the modification and construction of the expanded stadium. This paper provides an insight into the development of the finite element model used for the analysis of both the existing roof structure and the new stadium sections for both design and construction. It also explores the issues associated with the introduction of unknown load paths that occur in practice into finite element models and the need for accuracy when modeling them for an existing structure that is to be altered for further construction. Utilizing the developed finite element model to determine the cable forces of both the new and existing structure through all stages of construction, the techniques applied in modeling the stadium were validated by the structure's response being within 2% of the results extracted from the finite element package. © 2013 Taylor & Francis Group.

Tindall P.,Hyder Consulting
Proceedings of the Institution of Civil Engineers: Bridge Engineering | Year: 2011

Auckland City Council set up an international design competition for an opening bridge and, after two hotly contested stages, selected the striking design prepared by Hyder Consulting with architect Denton Corker Marshall and mechanical and electrical consultant Kenneth Grubb Associates. The project's aspiration was to create an iconic object, a breathtaking symbol for Auckland embodied in a unique and distinctive structure. Iconic status demands differentiation and, in the case of opening bridges, this can be provided by the built form, operation and scale. The Te Wero design responded to this challenge with a solution targeted specifically at the Viaduct Basin's unique history and environment. This paper considers the function and visual aspects of the bridge, its form and image, together with consideration of materials, design and construction issues that led to the final bridge design. The design is for a twin bascule bridge, with a tall mast structure that houses counterweights and a control room. When it opens, the effect will be dramatic, with the twin decks rising to either side. Thanks to lightweight aluminium decks and an ingenious counterweight system, however, it will be a low-energy, low-maintenance and sustainable solution. © ICE Publishing: All rights reserved.

Johnsson P.,Hyder Consulting
Annual Conference of the Australasian Corrosion Association 2012 | Year: 2012

The Astor Apartment Building in Sydney was completed in 1923. After almost 90 years in service, the façade had deteriorated to a point where major intervention was required to conserve it for the future. Previous remedial works failed to arrest the ongoing corrosion of the windows to a point where most had deteriorated and now necessitated intervention. A study of options for repair and conservation was undertaken with the poor condition of the steel windows meaning that replacement was the most technically and economically viable option. The Astor Façade Conservation Project involved concrete repair and protection as well as high performance protective coatings to new steel windows to manage the corrosivness of the environment. In addition, elements of building sustainability and energy efficiency were reinstated and improved by the refurbishment. Copyright © (2012) by the Australasian Corrosion Association.

Yang Q.J.,Hyder Consulting | Khazaei S.,Hyder Consulting
Underground - The Way to the Future: Proceedings of the World Tunnel Congress, WTC 2013 | Year: 2013

This paper presents a case study of a 53 m long jacked box tunnel of 7.75 m width and 4.56 m height underneath a live multiple track railway in Gladstone, Queensland, Australia. Two design considerations for minimizing ground settlement were 1) use of sixteen canopy tubes above the jacking box roof; and 2) installation of soil nails for the tunnel face stability. In addition a shielding system was developed to ensure that excavation would be within the shield without being beyond the unsupported ground. A crucial part of the design and construction was settlement limits which required that the exposed tunnel face also to be at a batter angle of no steeper than 45 degrees to the horizontal during construction. The jacking platform design was involved in three concept developments to provide a minimum horizontal jacking load of 60,000 kN. The selected design option using a piled raft was found to be suitable for the proposed box jacking operation requirements. The ground settlement predictions were carried out using both empirical and numerical methods by taking account of the adopted ground support and jacking systems. A comprehensive instrumentation and monitoring plan together with contingency measures have also been employed to verify the settlement predictions. The monitored results indicate that the design and construction methodology was a success. © 2013 Taylor & Francis Group.

Lee J.,Hyder Consulting | Haysler M.,Hyder Consulting | McDonald R.,Hyder Consulting
IABSE Conference, Nara 2015: Elegance in Structures - Report | Year: 2015

1 William Street, Brisbane is a 44 storey tower situated in the heart of Brisbane's CBD and future landmark office tower for the Queensland Government. At 220 metres high, it will provide over 70,000 square metres of modern and efficient premium office space for more than 4,000 government employees as well as private sector tenants. Construction on the tower is underway and when complete in 2016, it will be the tallest commercial office tower in Brisbane. The architectural vision to achieve an elegant built form posed many structural engineering challenges. This paper discusses some of these challenges and how they were overcome through innovation, collaboration and pushing the limits of normal engineering practice.

Haysler M.,Hyder Consulting | O'Shea M.,Hyder Consulting
Assessment, Upgrading and Refurbishment of Infrastructures | Year: 2013

Sometimes the strategic location of a site in the centre of a city and the potential of creating a valuable asset allows engineering challenges to be undertaken that would normally be discarded due to cost, complexity and risk. On Westfield Sydney, we have been fortunate to achieve our client's vision through innovative engineering solutions whilst ensuring the sequence of construction maintained the Sydney Tower in a safe and stable condition at all times. To validate this process a real-time monitoring and warning system was developed that measured structural movement against accurately predicted movement based on environmental conditions at that time.

Pokharel H.P.,Hyder Consulting
Australian Journal of Structural Engineering | Year: 2014

The method of deriving the seismic design force in the current Australian bridge design code AS5100.2-2004 is force based and requires the use of a structural response factor Rf which is not def ned for a structural system consisting of precast segmental concrete piers. There is an initiative to amend the current bridge design code to make it compatible with the changes made in AS1170.4-2007. The initiative also includes displacement based design method as an alternative to the current force based design method. This approach is new in the Australian design offices and there is a need to assess the impact these amendments will create. This paper details the workings of a performance based analysis to derive the seismic horizontal design force for the precast segmental concrete piers which meets the design requirements of the current bridge design code without using Rf. The effect of changes in AS1170.4-2007 and the outcome of implementing displacement based design method in the design of the precast pier have been discussed. The design feature of the Hunter Expressway viaducts which was developed to meet the requirements of AS5100.2-2004 is used to compare the effect of such proposed changes. © Institution of Engineers Australia, 2014.

Hyndman P.,Hyder Consulting | Shoebotham A.,Hyder Consulting | Hespe I.,Hyder Consulting
Proceedings of the Institution of Civil Engineers: Civil Engineering | Year: 2013

Completed in 2011, the Inner West Busway project reduced travel times for thousands of bus commuters along Victoria Road in Sydney, Australia, by up to 17 min. The A$175 million (£117 million) project involved installing a new 3·5 km city-bound bus lane, which required a new 400 m long, incrementally launched box girder bridge across Iron Cove. This paper examines the design, construction issues and innovation associated with the project, including the country's first bridge launch from in front of an abutment, its first use of the Quickchange movable barrier system and a world first in-pavement light system. Other works included over 12 km of new bicycle shoulder lanes and on-road bicycle routes, a new children's playground and rehabilitation of a park.

Johnsson P.,Hyder Consulting
50th Annual Conference of the Australasian Corrosion Association 2010: Corrosion and Prevention 2010 | Year: 2010

Conservation works to the facade of the heritage listed Dymocks Building located in George Street, Sydney have recently been completed. The building was constructed in the mid-1920s by the Dymocks Book Arcade. The George Street elevation of the Dymocks Building consists of glazed terracotta (faience) cladding, moulded copper panels and painted steel-framed windows, over a concrete-encased steel structure. The terracotta cladding showed localised areas of cracking and spalling associated with corrosion of embedded structural steel elements and movement of the building structure. This presented a developing risk to public safety. The project team devised a two phased approach to the repair and conservation of the façade, namely: Phase 1: Facade Deconstruction and Phase 2: Facade Reconstruction and Conservation.

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