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The Engineering office
Pre-project study
Prior to mould engineering, the CBE design office works with the client to optimise some parts of the segment
in order to finalise the mould form, for easy demoulding, gasket glueing and segment assembly.
Those pre-design stages are very important, as they provide cost-effective mould production and easier segment casting.
Mould study
CBE's knowledge is mainly based on segment mould design realized with the segment's concrete design.
This design step is always carried out in constant contact with the client and the design office in charge of the concrete design.
A this stage, CBE experience allows to finalise and optimise these concrete design drawings by, for example, adjusting
some details that will facilitate the demoulding process.
Segment precast plants
Rate of work, handling weight and equipment life cycle are carefully
studied in order to optimise the dimensioning of the whole workspace with the best possible liability.
A correct and effecient supply of the TBM is totally dependant on segment production reliability.
The strong industrial background and experience of CBE, allow to have clear and harmonious technical interactions
with most of the projects main actors, (TBM and gasket suppliers, linkage groups, etc.),
with whom frequent tech-meetings are held.
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Research & Development
In order to assert its world-leader position, CBE's technological monitoring is constant.
Those engineering researches mainly focus on mould design techniques and material properties
as well as on automation systems for precast production sites.
Vibration techniques are especially looked upon, as it is a key element for ensuring segment quality
and mould durability throughout the "stressful" and repetitive production process.
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Mould vibration study at the French R&D
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Means of production
CBE helds large means of production in France and China.
Those assets provides CBE with autonomy and great production capability (1000 to 2000 moulds a year).
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This capacity allows, in most circumstances, high reactivity on demand and very competitive delivery time.
The first moulds can averagely be delivered 13 weeks after the concrete design drawings have been handed over)
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Means of monitoring
he required accuracy regarding segments produced by this technology scales down to 1 tenth of a millimetre.
The mathematical precision of mould design and engineering needed to meet those requirements is even greater.
Mould geometry is therefore constantly controlled throughout the different production stages. This monitoring
is done with traditional methods but also with the help of high-tech devices such as "laser trackers",
which can rebuild the mould geometry with a precision of about 1/100th of a millimetre.
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Segment laser-control before its storage on production site
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