Resources Contact Us Home
Prefabricated unit construction modular bridging system

Image Number 5 for United States Patent #4912795.

A prefabricated modular unit construction bridging system in which all components are identical and interchangeable to meet any variation of span, width of roadway, number of lanes of traffic, and live load specification for any temporary, semi-permanent, or permanent bridge. The bridge is capable of being dismantled and the individual modular components used elsewhere to form a new bridge. The panels, when connected end-to-end to form the main load-bearing trusses of the bridge side girders, are of such a shape that they can be pinned together at their bottom chord level to support the standard cross-beams and modular deck units/bracing throughout the bridge and provide gaps between adjacent panels at their top chord level into which can be pinned other standard chord units of such a length calculated to eliminate entirely both the natural pin-hole deflection inherent in 2-pinned modular truss structures and the elastic deflection under dead load. Some or all of the elastic deflection due to live load may also be eliminated. Also, the same shaped basic panels can be up-turned to form a second story of panels in double story truss constructions. The bottom chords of the up-turned panels form the top chord of each truss of the side girders, and the bottom chord of the lower panels form the bottom chord of each truss of the side girders.

  Recently Added Patents
Solid-state image sensing apparatus and electronic apparatus
Encoding and/or decoding memory devices and methods thereof
Coated article and method for making the same
Radio frequency splitter
Video-recording reservation management apparatus, method, program, and system
Configurable pitch reducing optical fiber array
Switched capacitor amplifier
  Randomly Featured Patents
Multiple interpolation process for image correction
Central processing unit enclosure
Eyewear retainer
Fluid dispensing closure with integral valve
Microelectromechanical system (MEMS) digital electrical isolator
High speed illumination system for microelectronics inspection
Ultrasound image processing apparatus and method of forming and displaying ultrasound images by the apparatus
Method for performing frequency selective control channel scheduling in networks using an OFDM spectrum, a base station, a mobile terminal and a network therefor
In-service monitoring of steam pipe systems at high temperatures