An upper structure for a bridge includes a coping placed on the top end of a pier, and a girder held by the coping, wherein a side surface of the coping and an end surface of the girder are configured as inclined surfaces (or vertical surfaces), wherein a shear key protrudes on one of the inclined s
An upper structure for a bridge includes a coping placed on the top end of a pier, and a girder held by the coping, wherein a side surface of the coping and an end surface of the girder are configured as inclined surfaces (or vertical surfaces), wherein a shear key protrudes on one of the inclined surfaces (or vertical surfaces), and a shear key slot is formed in another one of the inclined surfaces (or vertical surfaces) so as to be engaged with the shear key. The present disclosure can reduce the construction cost, can realize improved structural efficiency of the bridge upper structure, can realize an easy installation of the girders, can easily combine the girders with the coping without plastering or fixing with mortar by site work, and can efficiently resist to a shear stress that may be generated in the bridge.
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1. An upper structure for a bridge, comprising: a coping placed on a top end of a pier, and a girder held by the coping, whereina side surface of the coping and an end surface of the girder are configured as inclined surfaces so as to come into close contact with each other, whereina shear key protr
1. An upper structure for a bridge, comprising: a coping placed on a top end of a pier, and a girder held by the coping, whereina side surface of the coping and an end surface of the girder are configured as inclined surfaces so as to come into close contact with each other, whereina shear key protrudes on one of the inclined surfaces, and a shear key slot is formed in another one of the inclined surfaces so as to be engaged with the shear key. 2. The upper structure for the bridge as set forth in claim 1, wherein the coping comprises: a horizontal part on which a lower surface of an end of the girder is seated in a state in which the lower surface of the end of the girder comes into close contact with the horizontal part, and a vertical part against which the end surface of the girder abuts in a state in which the end surface of the girder comes into close contact with the vertical part. 3. The upper structure for the bridge as set forth in claim 1, wherein the shear key and the shear key slot comprise a plurality of shear keys that are formed in an inclined surface direction and a plurality of shear key slots that are formed in the inclined surface direction. 4. The upper structure for the bridge as set forth in claim 1, wherein the shear key or the shear key slot is continuously formed in a longitudinal direction of the coping. 5. The upper structure for the bridge as set forth in claim 1, wherein the shear key or the shear key slot is intermittently formed in a longitudinal direction of the coping. 6. The upper structure for the bridge as set forth in claim 1, wherein an inclined surface directional length of the shear key is shorter than an inclined surface directional length of the shear key slot, so that the shear key is easily and closely engaged with the shear key slot. 7. The upper structure for the bridge as set forth in claim 1, wherein the shear key protrudes from an associated inclined surface so as to form a trapezoidal shape, andthe shear key slot is depressed in an associated inclined surface so as to form a trapezoidal shape. 8. The upper structure for the bridge as set forth in claim 1, wherein the shear key is formed on the coping and has a protrusion upper surface that is a horizontal surface, andthe shear key slot is formed in the girder and has a depression upper surface that is a horizontal surface. 9. The upper structure for the bridge as set forth in claim 1, wherein the shear key is formed in the girder and has a protrusion lower surface that is a horizontal surface, andthe shear key slot is formed in the coping and has a depression lower surface that is a horizontal surface. 10. The upper structure for the bridge as set forth in claim 1, wherein a plurality of prestressed members are installed in the coping along a longitudinal direction of the coping so as to prestress the bridge in a width direction of the bridge. 11. The upper structure for the bridge as set forth in claim 1, wherein the coping and the girder are connected to each other by a plurality of prestressed members that are installed along a longitudinal direction of the girder so as to prestress the bridge in a longitudinal direction of the bridge. 12. An upper structure for a bridge, comprising: a coping placed on a top end of a pier, and a girder held by the coping, whereina side surface of the coping and an end surface of the girder are configured as vertical surfaces so as to come into close contact with each other, whereina shear key protrudes on one of the vertical surfaces, and a shear key slot is formed in another one of the vertical surfaces so as to be engaged with the shear key. 13. The upper structure for the bridge as set forth in claim 12, wherein the shear key protrudes from an associated vertical surface so as to form a saw tooth shape, andthe shear key slot is depressed in an associated vertical surface so as to form a saw tooth shape. 14. The upper structure for the bridge as set forth in claim 12, wherein a plurality of prestressed members are installed in the coping along a longitudinal direction of the coping so as to prestress the bridge in a width direction of the bridge. 15. The upper structure for the bridge as set forth in claim 12, wherein the coping and the girder are connected to each other by a plurality of prestressed members that are installed along a longitudinal direction of the girder so as to prestress the bridge in a longitudinal direction of the bridge. 16. The upper structure for bridge as set forth in claim 12, wherein a plurality of prestressed members are installed in the coping along an longitudinal direction of the coping so as to prestress the bridge in a width direction of the bridge. 17. The upper structure for bridge as set forth in claim 12, wherein the coping and the girder are connected to each other by a plurality of prestressed members that are installed along an longitudinal direction of the girder so as to prestress the bridge in an longitudinal direction of the bridge.
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이 특허에 인용된 특허 (8)
Porter, Paul Westley, Apparatus and method for replacing a bridge using a pre-cast construction techniques.
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