Sustainability of Semi Integral Steel Concrete Composite Bridge
Sustainability of Semi Integral Steel Concrete Composite Bridge
(OP)
I will soon begin to design a semi-integral steel concrete composite bridge, consisting of two main steel beams with transverse beams to take the form of a ladder beam. The deck slab will consist of cast in situ reinforced concrete.
I originally proposed a fully integral structure, however the client is reluctant to accept this, however is keen on driving for a sustainable structure. Does anybody know of any significant sustainability (maintenance and environmental) issues with this type of structure?
I originally proposed a fully integral structure, however the client is reluctant to accept this, however is keen on driving for a sustainable structure. Does anybody know of any significant sustainability (maintenance and environmental) issues with this type of structure?






RE: Sustainability of Semi Integral Steel Concrete Composite Bridge
RE: Sustainability of Semi Integral Steel Concrete Composite Bridge
On the matter of semi integral. I think this configuration is good and don't see a problem with it since most arrangements I've seen have the joint behind the mudwall and before the actual bearing beam. The mudwall is usually deep enought to ensure that all runoff will not intrude into the bearing gallery (I'm assuming your from the UK).
At any rate, using the the semi integral will eliminate concerns over the cracking of the slab due to residual moment transfered from the slab to the diaphragm, though this is not very common any more. It will also eliminate cracking of the diaphragm due to rotation of the abutment as the wingwalls resist the rotation. In short you get the benefits of the open seat abutment without the expansion joint.
Regards,
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