Pre-stressed box culvert and methods for assembly thereof
First Claim
1. A pre-stressed concrete box culvert comprising:
- a three-sided culvert top section having a pre-stressed top slab, a first sidewall and a second sidewall, wherein the first and the second sidewalls extend orthogonally from opposite ends of the pre-stressed top slab, wherein the pre-stressed top slab has a first plurality of steel tendons extending between the opposite ends of the pre-stressed top slab and applying a compressive force to the pre-stressed top slab, and wherein the first and the second sidewalls each include a free end that has at least one male or female connector; and
a three-sided culvert bottom section having a pre-stressed bottom slab and a third sidewall and a fourth sidewall, wherein the third and the fourth sidewalls extend orthogonally from opposite ends of the pre-stressed bottom slab, wherein the pre-stressed bottom slab has a second plurality of steel tendons extending between the opposite ends of the pre-stressed bottom slab and applying a compressive force to the pre-stressed bottom slab, and wherein the third and the fourth sidewalls each include a free end that has at least one male or female connector arranged to mate with the at least one corresponding male or female connector at one of the respective free ends of the first and the second sidewalls.
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Accused Products
Abstract
A pre-stressed concrete box culvert includes a three-sided culvert top section having a pre-stressed top slab, a first sidewall and a second sidewall. The first and the second sidewalls extend orthogonally from opposite ends of the pre-stressed top slab, and the first and the second sidewalls each include a free end that has at least one male or female connector. The pre-stressed concrete box culvert includes a three-sided culvert bottom section having a pre-stressed bottom slab and a third sidewall and a fourth sidewall. The third and the fourth sidewalls extend orthogonally from opposite ends of the pre-stressed bottom slab, and the third and the fourth sidewalls each include a free end that has at least one male or female connector to mate with the at least one corresponding male or female connector arranged at one of the respective free ends of the first and the second sidewalls.
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Citations
19 Claims
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1. A pre-stressed concrete box culvert comprising:
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a three-sided culvert top section having a pre-stressed top slab, a first sidewall and a second sidewall, wherein the first and the second sidewalls extend orthogonally from opposite ends of the pre-stressed top slab, wherein the pre-stressed top slab has a first plurality of steel tendons extending between the opposite ends of the pre-stressed top slab and applying a compressive force to the pre-stressed top slab, and wherein the first and the second sidewalls each include a free end that has at least one male or female connector; and a three-sided culvert bottom section having a pre-stressed bottom slab and a third sidewall and a fourth sidewall, wherein the third and the fourth sidewalls extend orthogonally from opposite ends of the pre-stressed bottom slab, wherein the pre-stressed bottom slab has a second plurality of steel tendons extending between the opposite ends of the pre-stressed bottom slab and applying a compressive force to the pre-stressed bottom slab, and wherein the third and the fourth sidewalls each include a free end that has at least one male or female connector arranged to mate with the at least one corresponding male or female connector at one of the respective free ends of the first and the second sidewalls. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for assembling a pre-stressed concrete box culvert comprising:
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casting a three-sided culvert top section having a pre-stressed top slab, a first sidewall and a second sidewall, wherein the first and the second sidewalls extend orthogonally from opposite ends of the pre-stressed top slab, wherein the pre-stressed top slab has a first plurality of steel tendons extending between the opposite ends of the pre-stressed top slab and applying a compressive force to the pre-stressed top slab, and wherein the first and the second sidewalls each include a free end that has at least one male or female connector; and casting a three-sided culvert bottom section having a pre-stressed bottom slab and a third sidewall and a fourth sidewall, wherein the third and the fourth sidewalls extend orthogonally from opposite ends of the pre-stressed bottom slab, wherein the pre-stressed bottom slab has a second plurality of steel tendons extending between the opposite ends of the pre-stressed bottom slab and applying a compressive force to the pre-stressed bottom slab, and wherein the third and the fourth sidewalls each include a free end that has at least one male or female connector arranged to mate with the at least one corresponding male or female connector at one of the respective free ends of the first and the second sidewalls. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A pre-stressed concrete box culvert comprising:
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a plurality of three-sided culvert top sections each having a pre-stressed top slab, a first sidewall and a second sidewall arranged such that the first and the second sidewalls extend orthogonally from opposite ends of the pre-stressed top slab, wherein the pre-stressed top slab has a first plurality of steel tendons extending between the opposite ends of the pre-stressed top slab and applying a compressive force to the pre-stressed top slab, wherein each of the first and the second sidewalls has a free end that has at least one male or female connector, wherein each of the pre-stressed top slabs of the plurality of three-sided culvert top sections comprises a plurality of post-tensioning ducts extending from a first side to a second side of each pre-stressed top slab, and wherein the plurality of three-sided culvert top sections are arranged adjacent to each other such that the first plurality of post-tensioning ducts in each of the pre-stressed top slabs are aligned with each other forming a first plurality of continuous channels through the pre-stressed top slabs; and a plurality of three-sided culvert bottom sections each having a pre-stressed bottom slab, a third sidewall and a fourth sidewall arranged such that the third and the fourth sidewalls extend orthogonally from opposite ends of the pre-stressed bottom slab, wherein the pre-stressed bottom slab has a second plurality of steel tendons extending between the opposite ends of the pre-stressed bottom slab and applying a compressive force to the pre-stressed bottom slab, wherein each of the third and the fourth sidewalls has a free end that has at least one male or female connector arranged to mate with the at least one corresponding male or female connector at one of the respective free ends of the first and the second sidewalls, wherein each of the pre-stressed bottom slabs of the plurality of the three-sided culvert bottom sections comprises a plurality of post-tensioning ducts extending from a first side to a second side of each bottom slab, and wherein the plurality of three-sided culvert bottom sections are arranged adjacent to each other such that the second plurality of post-tensioning ducts in each of the pre-stressed bottom slabs are aligned with each other forming a second plurality of continuous channels through the pre-stressed bottom slabs. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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Specification