A temporary support system for a road bridge pre-fabricated small box girder-type concealed bent cap, and a method of constructing same. The support system comprises a main beam, a main pier support system, and a lateral pier support system; the main beam is arranged on the transverse side of road bridge piers; the main pier support system is disposed on the transverse side of a main pier area and is located under the main beam; the lower end of the main pier support system is fixed to a main pier bearing platform, whereas the upper end is fixed to the main beam; the lateral pier support system is disposed on the transverse side of a lateral pier area and is located below the main beam; and the lower end of the lateral pier support system is fixed to a lateral pier bearing platform, whereas the upper end is fixed to the main beam.

A temporary support system for a road bridge pre-fabricated small box girder-type concealed bent cap, and a method of constructing same. The support system comprises a main beam, a main pier support system, and a lateral pier support system; the main beam is arranged on the transverse side of road bridge piers; the main pier support system is disposed on the transverse side of a main pier area and is located under the main beam; the lower end of the main pier support system is fixed to a main pier bearing platform, whereas the upper end is fixed to the main beam; the lateral pier support system is disposed on the transverse side of a lateral pier area and is located below the main beam; and the lower end of the lateral pier support system is fixed to a lateral pier bearing platform, whereas the upper end is fixed to the main beam.

A construction joint bridging device with a joint sealing profile and a joint sealing profile as such, as well as a method for producing a joint sealing profile and a method for producing and disassembling a construction joint bridging device. The joint sealing profile consisting at least partially of an elastic material and having a holding portion for fastening to the construction joint bridging device, wherein the holding portion has at least in sections a material composition which can be activated in a targeted manner by chemical, thermal and physical exposure so that the volume of the holding portion changes.

A construction joint bridging device with a joint sealing profile and a joint sealing profile as such, as well as a method for producing a joint sealing profile and a method for producing and disassembling a construction joint bridging device. The joint sealing profile consisting at least partially of an elastic material and having a holding portion for fastening to the construction joint bridging device, wherein the holding portion has at least in sections a material composition which can be activated in a targeted manner by chemical, thermal and physical exposure so that the volume of the holding portion changes.

An installation method of a bent cap for mutually restraining adjacent pier studs in a prefabricated and assembled bridge is provided. A bent cap mold base is configured in a form of a bent cap, which includes fixedly arranging limiting steel rings at two ends of a rectangular frame and vertically arranging steel bar sleeves in the limiting steel rings, hoisting the cap bent mold base on top portions of adjacent two prefabricated pier studs, such that pier stud pre-embedded steel bars protruding from the top portions of the two prefabricated pier studs are correspondingly inserted into the steel bar sleeves at two ends of the bent cap mold base one by one, and limiting the adjacent two prefabricated pier studs in the bent cap mold base.

An installation method of a bent cap for mutually restraining adjacent pier studs in a prefabricated and assembled bridge is provided. A bent cap mold base is configured in a form of a bent cap, which includes fixedly arranging limiting steel rings at two ends of a rectangular frame and vertically arranging steel bar sleeves in the limiting steel rings, hoisting the cap bent mold base on top portions of adjacent two prefabricated pier studs, such that pier stud pre-embedded steel bars protruding from the top portions of the two prefabricated pier studs are correspondingly inserted into the steel bar sleeves at two ends of the bent cap mold base one by one, and limiting the adjacent two prefabricated pier studs in the bent cap mold base.

A construction method for the upright lifting of a large-tonnage box girder to a bridge, and an erection method for the large-tonnage box girder. The construction method comprises: constructing a lifting station (2) at reserved bridge piers (1); disposing a girder lifting base (3), lifter traveling rails (4), and a mounting lifter (6) in the lifting station (2); directly erecting a box girder (7) by the lifter (6) in a way that the lifter (6) travels to a position above the base (3) and erects the box girder (7). The erection method further comprises: lifting by the lifter (6) a single set of transport and erection apparatuses or two sets of transport and erection apparatuses to a bridge, a girder transport vehicle (9) cooperating with a bridge erecting machine (10) to repeatedly complete the erection of the box girder (7); hoisting by the lifter (6) the transport and erection apparatus off the bridge; lifting by the lifter (6) the box girder (7) within the scope of the reserved bridge pier (1) to the erected box girder (7); and constructing the reserved bridge piers (1); completing by the lifter (6) the erection of the box girder (7) within the scope of the reserved bridge piers (1). The construction and erection methods for the box girder occupy a small space and have high efficiency.

A new modular orthotropic steel bridge deck, and its manufacturing method, which introduces the design standardization of the orthotropic steel bridge deck designs, thereby, leading to cost-effective solutions by avoiding the complexities and costly details that are unnecessary for orthotropic steel bridge deck and short span bridge applications.

The present invention belongs to the technical field of bridges, and specifically discloses a spatial multi-point synchronous closure construction method for a three-main-truss steel truss arch bridge. Problems such as difficult control, low efficiency and poor precision of a three-main-truss steel truss arch bridge can be improved by mounting standard rods, adjusting the standard rods to designed coordinates, observing coordinates and spacing of closure rods, processing and mounting the closure rods, adjusting spatial locations, monitoring the atmospheric temperature, analyzing a change rule, pushing the standard rods, adjusting gaps, and carrying out closure.

The present invention belongs to the technical field of bridges, and specifically discloses a spatial multi-point synchronous closure construction method for a three-main-truss steel truss arch bridge. Problems such as difficult control, low efficiency and poor precision of a three-main-truss steel truss arch bridge can be improved by mounting standard rods, adjusting the standard rods to designed coordinates, observing coordinates and spacing of closure rods, processing and mounting the closure rods, adjusting spatial locations, monitoring the atmospheric temperature, analyzing a change rule, pushing the standard rods, adjusting gaps, and carrying out closure.