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Method of reinforcing a bridge

A technology for bridges and reinforcement plates, which is applied in bridges, bridge maintenance, bridge reinforcement, etc., can solve problems such as increasing costs, and achieve the effect of increasing load capacity and minimizing damage

Inactive Publication Date: 2007-12-19
INTELLIGENT ENG BAHAMAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Rerouting also increases costs

Method used

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  • Method of reinforcing a bridge
  • Method of reinforcing a bridge
  • Method of reinforcing a bridge

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Embodiment Construction

[0035]According to a first embodiment of the present invention, an existing concrete deck composite steel girder bridge is repaired by replacing the concrete deck with a prefabricated SPS deck panel 101 as shown in FIG. 4 . Subsequently, the SPS deck panels are composited with the existing steel girders 102 by bolting or welding between the panels 101 . Replacement SPS panels 101 are continuously formed by welding them together at adjoining edges. Existing or new steel parapets 103 can be bolted to the SPS deck deck.

[0036] Each SPS panel 101 includes outer metal panels 104, 106 bonded together by an intermediate or core layer 105 of plastic or polymeric material. The outer metal panel may be a steel plate with a thickness in the range of 2-20 mm according to specific application requirements. For plastic or polymeric materials, it is preferred to use compressed (ie non-foamed) thermosetting materials such as polyurethane elastomers. The core layer 105 may have a thicknes...

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Abstract

A method of repairing, reinforcing or reinstating a bridge, comprising fixing a reinforcing plate in a spaced relationship with an existing plate or girder, especially on the underside of the bridge structure, to form a closed cavity, and injecting plastics or polymer material into said cavity in liquid form, whereby said plastics or polymer material sets or cures so as to bond to said reinforcing and existing plates with sufficient strength to transfer shear forces therebetween.

Description

technical field [0001] The invention relates to bridges, especially the maintenance or reinforcement of all-steel orthotropic bridges, all-steel road bridges and composite concrete deck steel girder bridges. Background technique [0002] In documents US 5,778,813 and US 6,050,208 which are hereby incorporated by reference, a structural sandwich plate component is described which comprises two outer layers of metal sheets and a core of plastic or polymeric material such as foamed polyurethane, the core is bonded to the outer panels with sufficient strength to substantially contribute to the structural strength of the part. These sandwich panel systems (SPS) can be used in various forms of structures to replace rigid steel plates, formed steel plates, reinforced concrete or composite steel-concrete structures, and greatly simplify the composite structure, improving strength while reducing weight and structural properties (eg, stiffness, damping properties). A further develop...

Claims

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Application Information

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IPC IPC(8): E01D22/00
CPCE01D22/00
Inventor 斯蒂芬·约翰·肯尼迪
Owner INTELLIGENT ENG BAHAMAS
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