Technique for prestressing composite members and related apparatuses
OwnerAyman S. Mosallaminventor
Life of this patent
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Abstract
Disclosed is a method for increasing and optimizing the structural performance of composite structural member for use as primary load-bearing members through the introduction of prestressing members to the structure. Prestressing may occur by either pre-tensioning or post-tensioning the reinforced polymer structure. The teachings of the present disclosure are useful in constructing structural elements of bridges, buildings, pipes, poles, and other common structural members, including pilings and plywood.
Claims23
A method of changing the stress profile of a composite member comprising the steps of:
- (a) providing composite member;
- and
- (b) providing at least one prestressing member;
- wherein the prestressing member is used to prestress the composite member.
A kit of parts for making a prestressed composite member comprising:
- (a) an composite matrix material;
- (b) at least one reinforcement member;
- and
- (c) at least one prestressing member;
- wherein the composite matrix material and the at least one reinforcement member are used to form an composite member;
- and wherein the prestressing member is designed to prestress the composite member.
A method for reducing construction costs comprising the step of substituting traditional building materials with prestressed composite members.
An improved plywood-like building material comprising prestressed plywood strengthened by use of a prestressing member, wherein the prestressing member is fixed to the plywood by a laminate, strand, cable, rod, fabric, or cloth on one side, two sides, between the plies of the plywood, or a combination thereof:
- wherein the plywood-like building material is one of plywood, oriented strand board and other wood based panel and laminated product.
A method of reducing construction costs with an improved plywood-like building material comprising the step of treating a plywood-like building material with at least one prestressing member affixed to the plywood, oriented strand board, or wood based panel with a laminate layer:
- wherein application of the at least one prestressing member to the plywood-like building material modifies the stress profile of the plywood-like building material.
A method of making an improved plywood-like building material comprising the steps of:
- (a) providing a wooden plywood-like building material;
- (b) providing a laminating material;
- (c) providing at least one prestressing member;
- and
- (d) treating the plywood-like building material with the laminating material and the at least one prestressing member to form a laminate layer affixed to the plywood-like building material, wherein the laminate contains the at least one prestressing member;
- and
- wherein the laminated plywood-like building material exhibits a modified stress profile.
An improved composite piling comprising a fiber reinforced piling prestressed with a prestressing member, wherein the prestressing member modifies the stress profile of the composite piling.
Dependencies are inferred from the claim text.