Composite structural member, method for manufacturing same, and connecting assemblies for composite structural members

Patent metadata

Field	Value
Publication number	US-9637923-B2
Application number	US-201415031300-A
Country	US
Kind code	B2
Filing date	Oct 30, 2014
Priority date	Oct 30, 2013
Publication date	May 2, 2017
Grant date	May 2, 2017

Abstract

A structural member having a longitudinal axis comprises: an exterior shell member defining an elongated channel with an inner surface; an interior shell member having an outer surface and defining an inner channel, inserted in the elongated channel of the exterior shell member and extending longitudinally therein and defining an inter-shell spacing therebetween; and concrete filling the inter-shell spacing and including at least one reinforcement bar having a longitudinally extending section extending in the inter-shell spacing and being disconnected from the inner surface of the exterior shell member and from the outer surface of the interior shell member.

First claim

The invention claimed is:

1. A structural member having a longitudinal axis comprising:
an exterior shell member having two opposed ends and defining an elongated channel with an inner surface;
an interior shell member having two opposed ends and having an outer surface and defining an inner channel, the interior shell member being inserted in the elongated channel of the exterior shell member and extending longitudinally therein; and
concrete continuously filling space between the interior shell member and the exterior shell member and continuously covering the two opposed ends of the interior shell member with at least one reinforcement bar including a longitudinally extending section extending along the longitudinal axis and between the interior shell member and the exterior shell member and being disconnected from the inner surface of the exterior shell member and from the outer surface of the interior shell member, wherein at least one of the inner surface of the exterior shell member and the outer surface of the interior shell member comprises a polymeric coating including abrasive particles.

2. The structural member as claimed in claim 1 , wherein each one of the two opposed ends of the interior shell member is spaced-apart inwardly along the longitudinal axis from a corresponding end of the exterior shell member and the inner channel is closed with concrete, the inner channel of the interior shell member comprising opposed end sections and the concrete covering the two opposed ends of the interior shell member extends continuously into the opposed end sections and a length of each one of the opposed end sections is between 5% and 20% of a length of the interior shell member.

3. The structural member as claimed in claim 1 , wherein the interior shell member has a length along the longitudinal axis shorter than a length of the exterior shell member along the longitudinal axis, the interior shell member being contained in the exterior shell member and surrounded by the concrete, the structural member comprising at least one interior end spacing continuously filled with concrete, the at least one interior end spacing being defined between one of the opposed ends of the interior shell member spaced-apart inwardly along the longitudinal axis from a corresponding one of the opposed ends of the exterior shell member, and a length of the at least one interior end spacing is at least 10% of a length of the exterior shell member.

4. The structural member as claimed in claim 3 , wherein the at least one reinforcement bar comprises a transversally extending section extending from the longitudinally extending section into a respective one of the at least one interior end spacing and a second longitudinally extending section extending from the transversally extending section between the exterior shell member and the interior shell member, the longitudinally and transversally extending sections being embedded in the concrete.

5. The structural member as claimed in claim 1 , wherein the at least one reinforcement bar comprises a plurality of reinforcement bars connected together to define a reinforced concrete armature embedded in the concrete and spaced-apart from the outer surface of the interior shell member and the inner surface of the exterior shell member.

6. The structural member as claimed in claim 1 , wherein the at least one reinforcement bar is spaced apart from the inner surface of the exterior shell member and comprises a hook at a free end thereof, and the outer surface of the interior shell member is embedded in concrete.

7. The structural member as claimed in claim 1 , wherein the inner channel of the interior shell member is at least partially hollow, and wherein between 30% and 80% of a volume of the structural member is hollow.

8. The structural member as claimed in claim 1 , wherein the structural member is an elongated beam and a central longitudinal axis of the interior shell member is decentered on a tension side of the elongated beam and the longitudinally extending section of the at least one reinforcement bar extends on a tension side of the elongated beam.

9. The structural member as claimed in claim 1 , wherein at least one of the exterior shell member and the interior shell member comprises fiber reinforced polymer.

10. The structural member as claimed in claim 1 , wherein a ratio of the diameters of the interior shell member and the exterior shell member is between 0.2 and 0.8 and a length of the interior shell member is between 30% and 80% the length of the exterior shell member.

11. A structural member having a longitudinal axis comprising:
an exterior shell member defining an elongated channel with an inner surface;
an interior shell member having an outer surface and defining an inner channel, inserted in the elongated channel of the exterior shell member and extending longitudinally therein and defining an inter-shell spacing therebetween; and
concrete filling the inter-shell spacing and including at least one reinforcement bar having a longitudinally extending section extending in the inter-shell spacing and being disconnected from the inner surface of the exterior shell member and from the outer surface of the interior shell member, wherein the inner channel of the interior shell member comprises opposed end sections, the concrete filling continuously the opposed end sections and the inter-shell spacing and wherein each one of the opposed end sections has a length, and the length of each one of the opposed end sections is between 5% and 20% of the length of the interior shell member.

12. The structural member as claimed in claim 11 , wherein each one of the interior shell member and the exterior shell member comprises two opposed ends, the ends of the inner shell member being spaced-apart inwardly along the longitudinal axis from a corresponding end of the exterior shell member and are covered with the concrete.

13. The structural member as claimed in claim 11 , wherein the at least one reinforcement bar comprises a plurality of reinforcement bars connected together to define a reinforced concrete armature embedded in the concrete and spaced-apart from the outer surface of the interior shell member and the inner surface of the exterior shell member, at least one of the plurality of reinforcement bars comprises a transversally extending section extending from the longitudinally extending section into a respective one of the at least one interior end spacing.

14. The structural member as claimed in claim 11 , wherein between 30% and 80% of a volume of the structural member is hollow.

15. The structural member as claimed in claim 11 , wherein at least one of the exterior shell member and the interior shell member comprises fiber reinforced polymer, a ratio of the diameters of the interior shell member and the exterior shell member is between 0.2 and 0.8 and a length of the interior shell member is between 30% and 80% the length of the exterior shell member.

16. The structural member as claimed in claim 11 , wherein at least one of the inner surface of the exterior shell member and the outer surface of the interior shell member comprises a plurality of grooves defined therein.

17. The structural member as claimed in claim 11 , wherein at least one of the inner surface of the exterior shell member and the outer surface of the interior shell member comprises a plurality of spaced-apart pins protruding from a respective one of the inner surface of the exterior shell member and the outer surface of the interior shell member.

18. The structural member as

Assignees

• Socpra Sciences Et Genie Sec

Inventors

• Radhouane MASMOUDI
• Ahmed Abouzied

Classifications

• E04C3/29

  built-up from parts of different material, {i.e. composite structures} · CPC title

• E04H12/2292

  Holders used for protection, repair or reinforcement of the post or pole (E04H12/2276 takes precedence) · CPC title

• E04C5/168

  Spacers connecting parts for reinforcements and spacing the reinforcements from the form · CPC title

• E04C3/36

  of materials not covered by groups E04C3/32 or E04C3/34; of a combination of two or more materials · CPC title

• E04B1/30

  the supporting parts being composed of two or more materials; Composite steel and concrete constructions (of reinforced concrete E04B1/20) · CPC title