The present invention relates to a transition structure 10B for bridging a structural joint 14 between two structure parts 12 and 12b of a structure 12. The transition structure 10B has at least two trusses 16 mounted on the edges of the structure and at least one slat 20 displaceably mounted thereon, wherein a primary sliding surface 22 is arranged between at least one truss 16 and at least one slat 20. The primary sliding surface 22 has at least two partial sliding surfaces 22a and 22b, which are each arranged in mutually angled sliding planes 34a and 34b, the sliding planes 34a and 34b meeting in a common line of intersection S which forms an axis of movement A along which the slat 20 can move relative to the truss 16. In this regard, at least one sliding plane 34a, 34b is arranged at an oblique angle to a plane of movement B of the transition structure 10B.

A free movement, arris protection, construction joint has a pair of arris protection members formed complementarily from strips of sheet with a continuous trapezium wave form. A divider one of the members is typically 100 mm deep for a nominal 0.1 m deep slab. The other one is typically 50 mm deep. The members are of steel plate. The wave form is comprised of flanges extending in the length of the joint and of webs angled to the flanges and the length of the joint. The flanges are spaced on opposite sides of a mid-plane of the joint. The members are bolted together with flangible nylon bolts, with their top (in use) edges flush. Welded to the outer ones of the flanges are L strips having apertures in their flats extending from the flanges for anchoring the joint to its slabs.

An expansion joint bridging device is provided in the form of a plate-type roadway joint which bridges an expansion joint between two building components. The expansion joint is spanned by crossbeams which are braced in a load-bearing relationship on both building components. Supported on the crossbeams is at least one plate disposed above the crossbeams, the plate having two plate portions which lie flush with one another and are interconnected in a force-transmitting relationship. The plate portions are connected in situ by means of at least one cover plate which bridges the joint between the plate portions and connects the two plate portions in a force-transmitting relationship. At least one of the connections between the cover plate and the plate portions is hinged, having a rotational degree of freedom about an axis extending horizontally transversely to the orientation of the relevant plate.

An expansion joint system for bridging an expansion joint gap between two spaced-apart, underlying building or roadway structures. The expansion joint system includes a cover plate, at least one swing arm, sliding bearings engaged with the swing arms, and fasteners for engaging the swing arms to the cover plate. The swing arms include a receiving well configured for receiving a mechanical fastener to fasten the swing arms to the cover plate. The expansion joint system permits movement in response to a seismic or thermal event that causes expansion or contraction of the gap between structural members while maintaining coverage of the gap, and following a seismic or thermal event, the maintains a substantially-centered position of the cover plate.

A bridging device for a construction joint between a first construction part and a second construction part with several lamellae and at least one hydraulic control device for controlling the gap width between the lamellae. The hydraulic control device has double-acting hydraulic cylinders each with a movable piston and a piston rod arranged on the piston, each hydraulic cylinder being arranged on a lamella. Each piston rod is connected to a different lamella, wherein the piston defines a first working volume and a second working volume of the corresponding hydraulic cylinder. The invention is wherein the hydraulic control device comprises at least three double-acting hydraulic cylinders connected to each other by a hydraulic connection whereby the first working volume of each hydraulic cylinder is hydraulically connected to the second working volume of another hydraulic cylinder so as to form a hydraulic loop between the at least three hydraulic cylinders.

A modular expansion joint (e.g., for a bridge) can include an upper expansion support exhibiting a hinge design arranged for pivoting about a vertically extending axis. The upper expansion support underneath may be accompanied by a moisture seal and/or a lower expansion support. The modular expansion joint may include two beams that may be spaced apart by a gap into which the upper expansion support etc. can be received. Each of the two beams can include a top flange defining a top surface and a web extending from the flange. The upper expansion support can be positioned between the top flanges, while the lower expansion support can be positioned between the webs, for example. The upper expansion support may provide a continuation of a travel surface across the beam tops and may accordingly reduce pressure spikes and/or noise from tires moving across the travel surface.

A device for assisting to secure a bridge support bracket to a beam, the device comprising: a support frame, a hook to secure the support frame to the beam, a clamp to grasp and hold the bracket, and a pivot axle to pivotally connect the clamp to the support frame. With this device, a bridge builder can use the clamp to grasp and hold the bridge support bracket, and then pivot the clamp and support bracket relative to the beam.

An expansion joint system for bridging an expansion joint gap between two spaced-apart, underlying building or roadway structures. The expansion joint system includes a cover plate, at least one swing arm, sliding bearings engaged with the swing arms, and fasteners for engaging the swing arms to the cover plate. The swing arms include a receiving well configured for receiving a mechanical fastener to fasten the swing arms to the cover plate. The expansion joint system permits movement in response to a seismic or thermal event that causes expansion or contraction of the gap between structural members while maintaining coverage of the gap, and following a seismic or thermal event, the maintains a substantially-centered position of the cover plate.

A bridging device is provided in lamellar construction for a construction joint between a first construction part and a second construction part with several lamellae and at least one hydraulic control device for controlling the gap width between the lamellae. The hydraulic control device has double-acting hydraulic cylinders each with a movable piston and a piston rod arranged on the piston, each hydraulic cylinder being arranged on a lamella. Each piston rod is connected to a different lamella, wherein the piston defines a first working volume and a second working volume of the corresponding hydraulic cylinder. The invention is wherein the hydraulic control device comprises at least three double-acting hydraulic cylinders connected to each other by a hydraulic connection whereby the first working volume of each hydraulic cylinder is hydraulically connected to the second working volume of another hydraulic cylinder so as to form a hydraulic loop between the at least three hydraulic cylinders.

A modular expansion joint system with equidistance control. The modular expansion joint system includes transverse vehicle load bearing members which are positioned in a gap defined between adjacent spaced-apart structural members, support members positioned below the transverse vehicle load bearing members and extending across the expansion joint gap between the adjacent structural members, means positioned within the structural members for controlling movement of the support members, and means for controlling the spacing between the transverse vehicle load bearing members. The means for controlling the distance between the transverse vehicle load bearing members comprises a non-elastomeric compressive member, such as at least one coil spring which, which according to certain illustrative embodiments, maintains a substantially equal distance between transverse vehicle load bearing members.