Bridges – Truss – Details
Patent
1995-06-06
1997-11-04
Bennett, Henry A.
Bridges
Truss
Details
14 771, 404 1, 404 34, 404 47, 525831, E01D 1900
Patent
active
056826354
ABSTRACT:
A reinforced precast construction includes a generally panel-shaped reinforced concrete structural unit having a relatively flat upper surface adapted to support vehicles thereon and opposing ends configured to be positioned in abutting end-to-end contact and in abutting side-to-side contact. One of the opposing ends includes a horizontally extending gasket so that, when abutted against an adjacent identical article in an elongated arrangement, the abutting opposing ends sealingly engage the seal. Connectors are attached to the structural unit in positions so that they align and are interconnectable with fasteners to hold the structural unit to an adjacent previously laid structural unit. In one form, the precast structural units are adapted to rest on parallel beams to form a bridge construction, and include locators for locating the precast structural units horizontally on the beams. In the bridge construction, various modules are provided that can be attached to the bridge construction to accommodate various needs, including integral and/or bolt-on modulars forming sidewalks, side rails, fascia, and warming passageways. Also, modules are provided for bridges having enlarged widths. In another form, precast articles are provided to construct a road. The articles are adapted to be positioned in adjacent rows in an alternating arrangement, such as to form a multilane highway. Each module includes depressions defined along its sides to create space for receiving laterally extending brackets in the adjacent row of precast structural units. Also, locator brackets are located proximate the ends of the article for engaging locators on adjacent structural units to align the adjacent abutting edges of the upper surface in the precast structural units.
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Exhibit A includes pp. 14-29 and 33 from the March 1992 issue of National Underground Construction Association (NUCA) magazine, including articles disclosing various technologies concerning trenchless excavation construction methods, including jacking and related matters.
Exhibit B is an article entitled "NUCA Microtunnelling Pipe Standards Task Group, Concrete Pipe Section" published Feb. 23, 1993, which includes a specification for reinforced concrete pipe and discloses compressible bearing strips.
Exhibit C is a report entitled "Market Impact Report #23" published by the American Concrete Pipe Association, received the week of April 24, 1994, which discloses governmental activity in tube-based transportation.
Exhibit D is an article entitled "Alaska-Siberia Bridge" published in the Apr. 1993 issue of Popular Mechanics, pp. 56-58, authored by Gregory T. Pope, disclosing a tube-based bridge and tunnel.
Magnuson Larry R.
Tolliver Wilbur E.
Bennett Henry A.
O'Conner Pamela Anne
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