Hybrid composite concrete bridge and method of assembling
First Claim
Patent Images
1. An elongated girder for use in a bridge comprising:
- a girder body having a modified V-shaped cross section, the body including;
longitudinally extending webs defining sides of the girder;
a bottom flange extending between the webs;
top flanges extending outwardly from the webs, wherein upwardly facing surfaces of the top flanges have a roughened surface configured to promote shear transfer; and
strengthening material positioned in an interior of the girder at only the distal ends thereof to prevent crippling of the girder at a bridge abutment upon which the distal ends are placed, the strengthening material extending between the longitudinally extending webs, wherein the strengthening material is one of concrete, a plate of solid composite material, and a truss-type brace.
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Abstract
An elongated girder for use in a bridge includes a girder body having a modified V-shaped cross section. The body includes longitudinally extending webs defining sides of the girder, a bottom flange extending between the webs, and top flanges extending outwardly from the webs.
14 Citations
22 Claims
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1. An elongated girder for use in a bridge comprising:
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a girder body having a modified V-shaped cross section, the body including; longitudinally extending webs defining sides of the girder; a bottom flange extending between the webs; top flanges extending outwardly from the webs, wherein upwardly facing surfaces of the top flanges have a roughened surface configured to promote shear transfer; and strengthening material positioned in an interior of the girder at only the distal ends thereof to prevent crippling of the girder at a bridge abutment upon which the distal ends are placed, the strengthening material extending between the longitudinally extending webs, wherein the strengthening material is one of concrete, a plate of solid composite material, and a truss-type brace. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A hybrid composite concrete bridge system comprising:
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a plurality of elongated girders, each girder having a modified V-shaped cross section and including longitudinally extending webs defining sides of the girder, a bottom flange extending between the webs, top flanges extending outwardly from the webs, wherein upwardly facing surfaces of the top flanges have a roughened surface configured to promote shear transfer, and a plurality of shear connectors extending outwardly from the top flanges, wherein each girder is formed from fiber reinforced polymer (FRP), and wherein the plurality of girders are configured to be mounted between bridge abutments that define ends of a hybrid composite concrete bridge; strengthening material positioned in an interior of the girders at only the distal ends thereof to prevent crippling of the girders at the bridge abutments upon which the distal ends are placed, the strengthening material extending between webs, wherein the strengthening material is one of concrete, a plate of solid composite material, and a truss-type brace; and a plurality of reinforced concrete deck panels configured for attachment to the girders, the reinforced concrete deck panels including pairs of parallel channels in a lower surface thereof, wherein the reinforced concrete deck panels are positioned on the girders such that the shear connectors on each of the top flanges are positioned inside one of the channels. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A hybrid composite concrete bridge system comprising:
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a plurality of elongated girders, each girder having a modified V-shaped cross section and including longitudinally extending webs defining sides of the girder, a bottom flange extending between the webs, top flanges extending outwardly from the webs, wherein upwardly facing surfaces of the top flanges have a roughened surface configured to promote shear transfer, and a plurality of shear connectors extending outwardly from the top flanges, wherein each girder is formed from fiber reinforced polymer (FRP), and wherein the plurality of girders are configured to be mounted between bridge abutments that define ends of a hybrid composite concrete bridge; strengthening material positioned in an interior of the girders at only the distal ends thereof to prevent crippling of the girders at the bridge abutments upon which the distal ends are placed, the strengthening material extending between webs, wherein the strengthening material is one of concrete, a plate of solid composite material, and a truss-type brace; and a cast-in-place (CIP) reinforced concrete deck formed over one of removable and stay-in-place formwork positioned over the girders.
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20. A method of forming a hybrid composite concrete bridge system comprising:
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mounting a plurality of elongated girders between bridge abutments that define ends of a hybrid composite concrete bridge; positioning strengthening material in an interior of the girders at only the distal ends thereof to prevent crippling of the girders at the bridge abutments upon which the distal ends are placed, the strengthening material extending between webs, wherein the strengthening material is one of concrete, a plate of solid composite material, and a truss-type brace; and attaching a plurality of reinforced concrete deck panels to the girders; wherein each girder has a modified V-shaped cross section and includes longitudinally extending webs defining sides of the girder, a bottom flange extending between the webs, top flanges extending outwardly from the webs, wherein upwardly facing surfaces of the top flanges have a roughened surface configured to promote shear transfer, and a plurality of shear connectors extending outwardly from the top flanges, and wherein each girder is formed from fiber reinforced polymer (FRP); wherein the reinforced concrete deck panels include pairs of parallel channels in a lower surface thereof, wherein the reinforced concrete deck panels are positioned on the girders such that the shear connectors on each of the top flanges are positioned inside one of the parallel channels; wherein only one of a crane truck and a deck crane is used to perform each of the steps of positioning the elongated girders between the bridge abutments, positioning the concrete deck panels sequentially from an end of a bridge being formed by driving the one of a crane truck and a deck crane over previously installed concrete deck panels, and applying grout within the parallel channels and around the shear connectors. - View Dependent Claims (21, 22)
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Specification