Modular fiber-reinforced composite structural member
AssigneeThe Regents of the University of California at San Diego
InventorsFrieder Seible, Gilbert A. Hegemier
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Abstract
A concrete-filled fiber-reinforced structural member comprising a concrete core encased in a lightweight fiber-reinforced composite shell formed by winding polymer impregnated high-strength filaments. The fibers are arranged for optimal strength and may be tailored for a specific requirement. The shell structure is durable, chemically inert, and adaptable to a variety of civil engineering applications. A plurality of composite structural members can be connected via connectors to form complex space frame structures such as industrial support structures, bridges, buildings and the like.
Claims33
A composite structural member comprising a self-supporting, hollow prefabricated outer tubular shell comprising reinforcing fibers in a hardened polymer matrix and an inner concrete core disposed within said outer shell, wherein said shell further comprises a plurality of circumferentially extending ribs formed on an inner surface thereof adapted to engage said concrete core so as to inhibit relative axial displacement thereof.
A composite structure member comprising a hollow prefabricated outer tubular shell comprising reinforcing fibers in a hardened polymer matrix and an inner concrete core disposed within said outer shell, further comprising one or more transverse notches formed on said composite member and adapted for mating engagement with one or more corresponding transverse members.
A composite structural member comprising:
- a self-supporting, hollow outer tubular shell comprising reinforcing fibers in a hardened polymer matrix and an inner concrete core disposed within said outer shell and being formed therein by pouring said concrete in an uncured state into said hollow outer shell and allowing said concrete to harden, wherein said shell further comprises a plurality of ribs formed on an inner surface thereof adapted to engage said concrete core so as to inhibit relative axial displacement thereof.
A fiber-reinforced shell for containing and reinforcing cast concrete, said shell being a prefabricated hollow member and comprising polymer impregnated filaments of reinforcing fibers oriented substantially parallel to the longitudinal axis of said shell and having a combined first predetermined wall thickness, further comprising a plurality of ribs formed on an inner surface of said shell adapted to engage said cast concrete so as to inhibit relative axial displacement thereof.
A fiber-reinforced shell for containing and reinforcing a core of material, said shell being a prefabricated hollow member comprising reinforcing fibers in a hardened polymer matrix and having a plurality of circumferentially extending ribs formed on an inner surface thereof adapted to engage said core so as to inhibit relative axial displacement thereof.
Dependencies are inferred from the claim text.