Structural assemblies for constructing bridges and other structures. A structural assembly may comprise an elongated member defining an internal space. The structural assembly may also comprise a plurality of framing members connected to the elongated member at a plurality of pin connection nodes, each pin connection node comprising a pin interconnecting the elongated member, a first one of the framing members, and a second one of the framing members, the pin having a first longitudinal end and a second longitudinal end, at least one of the first longitudinal end and the second longitudinal end of the pin being located in the internal space of the elongated member.

A composite I-truss is provided, that comprises a pair of top and bottom flanges and an extending intermediate web having a first end secured to the first flange and a second end secured to the second flange. Each flange comprises one or more longitudinal beams secured to the flange connectors. The web comprises at least a pair of flange connectors extending away from the flange and toward the web. The web comprises a plurality of linking struts located at a plurality of longitudinal positions along a length of the I-truss and connecting the flange connectors of the first flange to the flange connectors of the second flange.

A composite I-truss is provided, that comprises a pair of top and bottom flanges and an extending intermediate web having a first end secured to the first flange and a second end secured to the second flange. Each flange comprises one or more longitudinal beams secured to the flange connectors. The web comprises at least a pair of flange connectors extending away from the flange and toward the web. The web comprises a plurality of linking struts located at a plurality of longitudinal positions along a length of the I-truss and connecting the flange connectors of the first flange to the flange connectors of the second flange.

An adjustable structural connection can be used to join steel structural elements at a range of angles and is capable of adjusting in situ to accommodate additional angles or tolerances through cold bending. Pre-bent plate or plates may be loosely fitted around steel structural elements, such that holes in the plates align with holes of the steel structural elements. Placing bolts through the aligned holes and tightening those bolts can be used to cold bend the plate or plates and conform the angle of the pre-bent plates to a different angle defined by an apex joint of two steel structural elements. Specific tightening procedures may be employed.

An adjustable structural connection can be used to join steel structural elements at a range of angles and is capable of adjusting in situ to accommodate additional angles or tolerances through cold bending. Pre-bent plate or plates may be loosely fitted around steel structural elements, such that holes in the plates align with holes of the steel structural elements. Placing bolts through the aligned holes and tightening those bolts can be used to cold bend the plate or plates and conform the angle of the pre-bent plates to a different angle defined by an apex joint of two steel structural elements. Specific tightening procedures may be employed.

The description relates to bridge truss systems. On example can include a steel truss that includes a top cord spaced away from a bottom cord and multiple web members secured between the top cord and the bottom cord. A deck can be positioned on the top cord of the steel truss.

The description relates to bridge truss systems. On example can include a steel truss that includes a top cord spaced away from a bottom cord and multiple web members secured between the top cord and the bottom cord. A deck can be positioned on the top cord of the steel truss.

A truss frame for a bridge and/or support includes two elongated, parallel longitudinally-extending post pipes having an outer circumference; two parallel crossbars extending perpendicularly to the post pipes; and a length-adjustable elongated diagonal element. The parts are hingedly and detachably bolted to one other. Two parallel connecting plates secured near each post pipe end extend away from one another on a common, imaginary plane containing the post pipe and crossbar longitudinal axes. Each crossbar and diagonal element has opposite ends hingedly and detachably bolted to a connecting plate. At least two rosettes are welded to each post pipe at a distance from one another corresponding to an integer multiple of a module scaffold modular size. A connecting body is welded to the connecting plate near at least two post pipe ends associated with the same crossbar and surrounds the respective post pipe outer circumference.

A truss frame for a bridge and/or support includes two elongated, parallel longitudinally-extending post pipes having an outer circumference; two parallel crossbars extending perpendicularly to the post pipes; and a length-adjustable elongated diagonal element. The parts are hingedly and detachably bolted to one other. Two parallel connecting plates secured near each post pipe end extend away from one another on a common, imaginary plane containing the post pipe and crossbar longitudinal axes. Each crossbar and diagonal element has opposite ends hingedly and detachably bolted to a connecting plate. At least two rosettes are welded to each post pipe at a distance from one another corresponding to an integer multiple of a module scaffold modular size. A connecting body is welded to the connecting plate near at least two post pipe ends associated with the same crossbar and surrounds the respective post pipe outer circumference.

A structural plane is presented for forming a variable depth structure constructed of adjustable modules. Each module is formed of four links connected with revolute joints. The modules are connected at adjacent lateral joints and by upper and lower chords connecting the upper and lower revolute joints of the modules. The ultimate lateral joints of the modules at each end are connected to each end of the structural plane. The adjustable module and other components can form two- and three-hinged arches made of standard rolled steel sections.