Civil Engineering Association

Bridge Repair Manual

Size: 5.9 MB | Format: PDF | Year: 2006 | pages: 245

The purpose of this manual is to describe and detail standard repair procedures for defects commonly found in bridges owned and maintained by ARTC. Both new procedures and those that have been previously used successfully on ARTC's bridges are included.
Several advantages result from standardising repair procedures:
 The standard repair procedures included have been developed to be both structurally sound and practically achievable. Adherence to standard repair procedures reduces the incidence of inappropriate and ineffective repairs and repairs that have adverse effects on the bridge.
 Repairs will be undertaken in a consistent fashion throughout ARTC, whether carried out by day labour or under contract.
 The engineering input into detailing sound repairs is minimised and duplication of effort in developing repair procedures is avoided.
 The cumulative knowledge and experience gained in carrying out repairs can be incorporated into the repair procedures and details. This is an effective
means of passing on the knowledge.
 Relevant engineering information about the repair procedures is included in the manual to assist those responsible for selecting appropriate repair action.

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REPAIR MANUAL FOR CONCRETE BRIDGE ELEMENTS

1.0 Introduction
Concrete girders are frequently damaged by over-height impacts, fire or corrosion. Minor
damage to the girders can consist of cracking or shallow spalls, whereas serious damage
can extend to concrete, reinforcing steel and prestressing steel. Minor damage can affect
the bridge’s aesthetic appearance and long term durability, while severe damage can
compromise the structural capacity of the bridge. Regardless of the degree of severity of
damage, loose concrete from a damaged girder has the potential to fall onto the road and
could result in injury to motorists or damage to vehicles.
This manual provides a guideline for assessing damage to concrete girders due to an
impact by a high load collision, fire damage or corrosion. The manual also includes
standard techniques and procedures that may be used to repair the damaged concrete
bridge girders. An important part of dealing with damage to a concrete girder requires
immediate attention, such as removing loose concrete from the damaged girder, putting up
netting around the impacted area and determining if load restrictions for the bridge are
required.

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PDF : 5.9 mb

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