An intelligent reinforcing support for reinforced concrete low-box girder and method for minimally invasive reinforcement, including first main body, second main body, one-way rotation support structure, one-way lifting structure and control device; first and second main bodies arranged up and down, first main body used to transfer load on bridge deck to second main body, second main body used to transfer load to bottom plate, lower part of first main body inserted into second main body and matched with second main body through one-way lifting structure; outer wall of upper part of first main body and outer wall of second main body respectively provided with one-way rotation support structure and automatic lock, automatic lock connected to lock catch of corresponding one-way rotation support structure, communicated with control device, automatic lock unlocks after receiving instruction, supporting rod of first main body moves upwards, supporting rod of second main body moves downwards.

A segment-assembled type pier column member with a steel-concrete composite structure includes a reinforcement tube embedded in a pile cap, wherein the reinforcement tube is connected with a bottom of a lower segment of a hollow steel tube pier and is poured with concrete, and pier columns in upper and lower segments are reinforced by means of segment connecting and being embedded with local reinforcing meshes. A steel cross beam is connected with an upper segment of the hollow steel tube pier in an assembled way. A pre-stressed tensioning duct is reserved between the steel cross beam and the pier column in the upper segment.

A segmental precast composite-material composite-slab composite beam and a construction method thereof are provided, relating to the technical field of bridge design and construction. The segmental precast composite-material composite-slab composite beam mainly includes a segmental precast orthotropic composite top slab, a web, a bottom slab, and a wet joint between segments. The orthotropic composite top slab is composed of an orthotropic slab and an ultra-high-performance concrete layer (UHPC), and the interface connection of the orthotropic slab and the UHPC structural layer is achieved by a shear key. The UHPC structural layer is superposed with the orthotropic slab in segments in a precast plant to form a composite-slab composite beam segment to be entirely transported, hoisted and assembled, and the connection of the UHPC structural layers between the segments is achieved by casting a transverse wet joint in place.

A method for making a prefabricated, prestressed module includes arranging one or more steel beams atop a supporting formwork element in a direction transverse to the supporting formwork element and arranging one or more precast deck elements across the one or more steel beams to create a substantially continuous surface. The one or more precast deck elements have pockets for receiving connectors that protrude from the one or more steel beams. The method also includes arranging the supporting formwork element to allow the one or more steel beams to bend into a cambered shape to impart compressive stresses to a bottom flange of the one or more steel beams and tension stresses to a top flange of the one or more steel beams and inserting grout into the pockets to hold the cambered shape and to bond the one or more precast deck elements to the connectors and the top flange.

An elevated roadway for autonomous vehicles may include a pylon extending vertically from a ground anchor and comprising a metal tube defining a central cavity and a concrete column within the central cavity. The elevated roadway further includes a bracket coupled to the pylon and comprising a mounting plate secured to the pylon and a cantilevered road support member extending from the mounting plate. The elevated roadway may further include a cantilevered road section coupled to the pylon via the cantilevered road support member and comprising a joist structure structurally coupled to the cantilevered road support member, a road member above the joist structure and supported by the joist structure, and first and second side barriers along first and second sides of the road member, respectively. The road member may be adapted to receive a four-wheeled roadway vehicle.

An elevated roadway for autonomous vehicles may include a pylon extending vertically from a ground anchor and comprising a metal tube defining a central cavity and a concrete column within the central cavity. The elevated roadway further includes a bracket coupled to the pylon and comprising a mounting plate secured to the pylon and a cantilevered road support member extending from the mounting plate. The elevated roadway may further include a cantilevered road section coupled to the pylon via the cantilevered road support member and comprising a joist structure structurally coupled to the cantilevered road support member, a road member above the joist structure and supported by the joist structure, and first and second side barriers along first and second sides of the road member, respectively. The road member may be adapted to receive a four-wheeled roadway vehicle.

Disclosed are a steel-concrete composite web and a construction method thereof, and relate to the field of bridge engineering. The steel-concrete composite web comprises a plurality of prefabricated web segments connected in sequence, wherein each prefabricated web segment comprises a corrugated steel web and a concrete encasement, each concrete encasement is arranged on the inner side of the corresponding corrugated steel web. The right and left edges of adjacent corrugated steel web segments are connected, and a pouring space is formed between adjacent concrete encasements; and each concrete encasement is provided with joint reinforcing rebars used for stretching into the pouring space, first concrete is poured into the pouring space to form a cast-in-place wet joint, and the joint reinforcing rebars are embedded into the cast-in-place wet joint.

A two-way structural system for construction, comprising a base part (1) with a plurality of longitudinal channels (1.1) and a plurality of transverse channels (1.2) that are evenly 5 distributed, a stiffening part (2) with a plurality of holes (2.3) along the sheets (2.1, 2.2); wherein both parts (1 and 2) are made of FRP material, and wherein the stiffening part (2), in an operational position, is connected by resting on the base part (1) and fitting into the corresponding channels (1.1, 1.2), defining a cavity in the channels (1.1, 1.2) between both parts (1, 2) to be filled with fibre-reinforced concrete, the assembly forming an integral structure once the concrete has set, and both parts (1.1, 1.2) being configured as a self-supporting structure against the pouring of the concrete. A building method for constructing bridges, tunnels and underground works, with the two-way structural system.

An externally encased prefabricated ultra-high-performance concrete (UHPC) slab arch bridge with a concrete-filled steel tube stiff skeleton is provided. The arch bridge includes a concrete-filled steel tube stiff skeleton arch rib segment, where the concrete-filled steel tube stiff skeleton arch rib segment is arranged at four corners inside a concrete-filled steel tube stiff skeleton externally encased prefabricated UHPC slab arch rib segment, and the concrete-filled steel tube stiff skeleton externally encased prefabricated UHPC slab arch rib segment includes two web structures, where the top and bottom of the two web structures are respectively connected to a roof structure and a floor structure through a cast-in-situ UHPC longitudinal joint and a cast-in-situ UHPC transverse joint. The stiff skeleton externally encased concrete is prefabricated into a UHPC slab and then transported to the site for assembly, the UHPC is used as externally encased concrete to reduce the self-weight of the structure.

An intelligent reinforcing support for reinforced concrete low-box girder and method for minimally invasive reinforcement, including first main body, second main body, one-way rotation support structure, one-way lifting structure and control device; first and second main bodies arranged up and down, first main body used to transfer load on bridge deck to second main body, second main body used to transfer load to bottom plate, lower part of first main body inserted into second main body and matched with second main body through one-way lifting structure; outer wall of upper part of first main body and outer wall of second main body respectively provided with one-way rotation support structure and automatic lock, automatic lock connected to lock catch of corresponding one-way rotation support structure, communicated with control device, automatic lock unlocks after receiving instruction, supporting rod of first main body moves upwards, supporting rod of second main body moves downwards.