Expanding MCEC - largest convention and exhibition space in Australia

作者：Tamara Stakic

The Melbourne Convention and Exhibition Centre (MCEC), located in Australia, is undergoing an expansion to help the world’s most liveable city retain its position as the meetings and events capital.

The20,000-square-metre expansionincludes 9,000 square metres of:

• Flexible, multi-purpose event space
• 新展览厅
• Additional meeting rooms
• A banquet room
• A new café and bar

When completed the new space will cement MCEC’s position as thelargest convention and exhibition space in Australia,with an increasedtotal size of more than 70,000 square metres.

The expansion is part of a larger South Wharf expansion project that includes a new 347-room Novotel Melbourne South Wharf and a新的1,150空间多层停车场- 全部与现有建筑物完全连接并集成。停车场已经完成，新酒店最近开业。

澳大利亚维多利亚政府提供2.05亿美元for the expansion of MCEC, and the State’s partner Plenary and its partners Flagship Property Holdings and Vicinity Centres are investing more than $150 million AUD in the new hotel and car park.

墨尔本钢制作者Stilcon is one of the many local companies working on the project, engaged by the project builder Probuild to manufacture and install the entire steel skeleton for the new exhibition hall, convention centre spaces and the car park.

Stilcon is providing a complete steelwork package- 钢铁工程处理，弯腰和绘画，到达现场的运输以及最终的现场勃起。所有这些都是由他们在墨尔本西部的设施中的制造来完成的。

Central to Stilcon’s work is thefabrication of five 85-metres-long trusses, weighing more than 70 tonnes each. Each truss is comprised of eight 21-metre modules, ranging from 5 to 10 metres in height.

The finished product, comprising of4,300 tonnes of structural steel,combines the highest levels of strength with structural integrity and manoeuvrability for safe, stable installation.

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A progressive approach to deliver a complete steelwork package

To speed erection times and create better safety exclusion zones onsite in Melbourne’s busy central business district, Stilcon employed a more progressive approach to constructing the steel frame for the new four-level carpark.

事实证明，钢勃起方法是一个至关重要的时间节省方面，使立面承包商和混凝土可以在现场进行无限制并与钢铁厂承包商并行工作。Stilcon站点工程师Adam Tierney解释了这种“垂直方法”的重点是结构的一部分的全高直立建筑，该建筑物又在建筑物的宽度上复制，采用相同的主要方法。

Stilcon adopted the approach to allow trades to access the full height structure earlier, while the steel erection crew could work a few bays ahead, rather than the more common horizontal floor-by-floor build sequence. Increasing the number of bays built also provides a safety buffer zone between steel erection and follow-on trades, which is an Occupational Health and Safety (OHS) requirement on the site.

“平坦的'水平'方法是传统上大多数其他多层次停车场建造的方式，使钢或混凝土散布地板区域更宽，限制了多个工作阵线的能力，”Tierney said.

垂直构建方法涉及首先使用全高（13米高）的圆柱构建单个方格舱，并进行一些临时支撑，以实现垂直勃起。从最低的水平开始，所有主要和二级成员均竖立，导致完整的四级高钢湾工作。

初始海湾完成后，然后将二级湾结构置于两个方向上，使Stilcon更快地完成了一块海湾，将其移交给了随后的商人。

In this case, the metal decking was laid first on level two followed by level one. While metal deck laying was occurring on level one, the reinforcement placement began on level two. The slab was then poured on level two, creating a safety deck between the upper and lower structure.

Then steel reinforcement was installed, and concrete poured on level one as well as the steel decking laid for level three by the installer working off the poured level two.

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From the ground, up

To provide crucial time savings and accuracy, Stilcon turned to Madigan Surveyors, a professional surveying firm that provides a complete range of services to the construction industry and allied professionals. Madigan Surveyors used Geosystems solutions to precisely set out all steel connections to an existing structure – from ground slabs where the column anchor bolts and base levels are precisely set out to horizontal connections into existing structural slab edges or walls.

Geosystems solutions were used to manage the construction layout for connections to existing structure, ensuring that the construction team were working to the as-built condition rather than the design.

In addition tocapturing as-built conditions，随同建造的调查捕获了新建造的结构作为质量的一部分assurance proceduresand to also set out existing walls for any member connections.

Due to the higher flexibility and movement in steel structures, the survey scope also includedmonitoring of the main exhibition hall roof trusses.

在整个构建周期中，对桁架进行了监测。在监视阶段，项目团队在最初的架子最初处于自身体重下，在初始勃起阶段捕获了桁架的叛逃。在屋顶，桁架覆层和可操作的壁系统上加载到桁架上时，进行了进一步的监测。

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简单布局，简单设置

Stilcon also recently purchased the iCON robotic construction total station due to its ability to tie neatly into established building construction workflows and快速加快安装准备和施工任务。A solution which Andreas Caleta, Stilcon surveyor, favours for itssimplicity and ease of use.

The Leica iCR60 has a简单而指导的设置例程设计用于最小使用错误to give users the confidence for an error-proof set up routine.

“The iCON robotic total station is the fastest, reliable and easy-to-use layout solution, making it one of the most productive one-person layout solutions for construction professionals who have a need for positioning tasks and bringing design to reality,”卡莱塔说。