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CN-116024879-B - Assembled steel bridge and construction method thereof

CN116024879BCN 116024879 BCN116024879 BCN 116024879BCN-116024879-B

Abstract

The invention discloses an assembled steel bridge and a construction method thereof, belonging to the field of steel bridges, wherein the assembled steel bridge comprises a sleeve, a positioning pipe and a fixed structure which form an assembling mechanism; the fixing structure is arranged in the positioning tube and comprises a connecting component, a movable component A, a limiting ring, a moving component and a movable component B, wherein the connecting component is arranged at the bottom of an inner cavity of the positioning tube, the movable component A is arranged in a gap between the connecting component and the inner cavity of the positioning tube, the movable component B is arranged above the inner cavity of the positioning tube, the limiting ring is fixedly arranged in the inner cavity of the positioning tube, the moving component penetrates through the limiting ring, the bottom end of the moving component is in contact with the movable component A, and the top end of the moving component is in contact with the movable component B. The invention has the advantages that the positioning tube is inserted into the sleeve, the movable component A is extruded, the movable component B is driven to push out by the movable component, the positioning tube is fixed with the sleeve, and the positioning tube and the sleeve are kept stable in the longitudinal direction.

Inventors

  • ZHANG FUHAI

Assignees

  • 温州天泽建设有限公司

Dates

Publication Date
20260505
Application Date
20221229

Claims (7)

  1. 1. An assembled steel bridge, comprising: The assembly mechanism consists of a sleeve (1), a positioning pipe (2) and a fixing structure (3); wherein the fixing structure (3) is arranged in the positioning tube (2); the fixed structure (3) comprises a connecting component (301), a movable component A (302), a limiting ring (303), a movable component (304) and a movable component B (305); the connecting component (301) is arranged at the bottom of the inner cavity of the positioning tube (2); a movable component A (302) arranged in a gap between the connecting component (301) and the inner cavity of the positioning tube (2); A movable assembly B (305) arranged above the inner cavity of the positioning tube (2); the limiting ring (303) is fixedly arranged in the inner cavity of the positioning tube (2); the moving assembly (304) is arranged in the limiting ring (303) in a penetrating way; wherein the bottom end of the moving component (304) is contacted with the movable component A (302), and the top end of the moving component (304) is contacted with the movable component B (305); the sleeve (1) is embedded at the joint of the bottom of the bridge body and the bottom of the bridge, and the positioning pipe (2) is arranged at the top of the base and the top of the bridge body; the connection assembly (301) comprises: The connecting column (3011) is arranged in the middle of the bottom of the inner cavity of the positioning tube (2); The movable assembly a (302) comprises: a plurality of movable blocks A (3021) which are arranged in a ring-shaped array in a sliding manner and are arranged in a through hole A (201) formed in the bottom of the positioning tube (2); A spring A (3023) arranged between the inner side of the movable block A (3021) and the outer wall of the connecting column (3011); the extrusion block (3022) is fixedly arranged at the top end of the movable block A (3021); Wherein the inner side of the extrusion block (3022) is provided with an inclined plane; the movable component B (305) includes: a plurality of movable blocks B (3051) are arranged in a through hole B (202) formed in the top of the positioning tube (2) in a sliding manner in an annular array; Wherein the inner side of the movable block B (3051) is provided with a downward inclined plane, and the arc inclined plane at the outer side of the movable block B (3051) is inserted into an opening adapted above the inner side wall of the sleeve (1); the vertical plate (3053) is fixedly arranged at the top end of the movable block B (3051); a spring B (3052) arranged between one side of the vertical plate (3053) and the inner cavity wall of the positioning tube (2); The movement assembly (304) includes: a plurality of moving bars (3041) which are arranged in a sliding groove (3031) formed in the inner side of the limiting ring (303) in a sliding manner; The bottom end and the top end of the moving bar (3041) are respectively provided with an inclined plane, the inclined plane at the outer side of the bottom end of the moving bar (3041) is matched with the inclined plane at the inner side of the extrusion block (3022), and the inclined plane at the outer side of the top end of the moving bar (3041) is matched with the inclined plane at the inner side of the movable block B (3051).
  2. 2. A fabricated steel bridge according to claim 1, wherein the connection assembly (301) further comprises: the connecting plates (3012) are fixedly arranged on the outer wall of the connecting column (3011) in a ring-shaped array; one end of the connecting plate (3012) deviating from the connecting column (3011) is fixedly connected with the inner cavity wall of the positioning tube (2).
  3. 3. The fabricated steel bridge according to claim 2, wherein the outer side of the movable block a (3021) is provided with an arc-shaped inclined surface, the arc-shaped inclined surface faces upwards, and the inner side of the movable block a (3021) is provided with a vertical plane; Two ends of the spring A (3023) are fixedly connected with the inner side of the movable block A (3021) and the outer wall of the connecting column (3011) respectively; The outer side of the extrusion block (3022) is provided with an arc-shaped surface, and the arc-shaped surface is matched with the inner cavity wall of the positioning tube (2).
  4. 4. A fabricated steel bridge according to claim 3, wherein the outer side of the movable block B (3051) is provided with an arc-shaped inclined surface, which is downward; The two ends of the spring B (3052) are fixedly connected with one side of the vertical plate (3053) and the inner cavity wall of the positioning tube (2) respectively.
  5. 5. The assembled steel bridge according to claim 4, wherein a plurality of moving bars (3041) are slidably arranged in a sliding groove (3031) formed in the inner side of the limiting ring (303).
  6. 6. The fabricated steel bridge girder of claim 5, wherein the moving assembly (304) further comprises: The limiting strip (3042) is fixedly arranged on the side edge of the moving strip (3041); The limiting strips (3042) penetrate through limiting grooves (3032) formed in the side edges of the sliding grooves (3031); The outer end of the limiting strip (3042) is provided with an arc-shaped surface, and the limiting strip (3042) is matched with the limiting groove (3032).
  7. 7. The method for constructing the assembled steel bridge according to any one of claims 1 to 6, wherein the construction process is as follows: s1, preparing an assembly mechanism for building a steel bridge, separating a sleeve (1) from a positioning pipe (2), and assembling a fixing structure (3) in the inner cavity of the positioning pipe (2); S2, arranging a plurality of positioning pipes (2) on a steel bridge base in a rectangular array, wherein the outer side of a movable block A (3021) extends out of the positioning pipes (2), and a movable block B (3051) is retracted into the positioning pipes (2); s3, arranging a plurality of positioning pipes (2) on the top end of the bridge column in a rectangular array, wherein the outer side of the movable block A (3021) extends out of the positioning pipes (2), and the movable block B (3051) is retracted into the positioning pipes (2); S4, when the movable sleeve is assembled, the base is fixed on the ground, the bridge column is vertical, the bottom end of the bridge column is connected with the base, the positioning tube (2) is inserted into the sleeve (1), the sleeve (1) moves downwards along with the bridge column until the inner side wall at the bottom of the sleeve (1) presses the outer side of the movable block A (3021), the movable block A (3021) is retracted into the positioning tube (2), the spring A (3023) is compressed, the pressing block (3022) retracts along with the movable block A (3021), the inner side inclined surface of the pressing block (3022) presses the outer side inclined surface at the bottom end of the moving bar (3041), the moving bar (3041) moves upwards, the outer side inclined surface at the top end of the moving bar (3051) presses the inner side inclined surface of the movable block B (3051), the movable block B (3051) moves out of the positioning tube (2), the spring B (3052) is compressed, and the outer side arc inclined surface of the movable block B (3051) is inserted into an opening adapted above the inner side wall of the sleeve (1), so that the sleeve (1) and the positioning tube (2) are fixed; s5, when the top end of the bridge column is in butt joint with the bottom of the bridge body, the operation steps in the S4 are referred to.

Description

Assembled steel bridge and construction method thereof Technical Field The invention relates to the field of steel bridges, in particular to an assembled steel bridge and a construction method thereof. Background The assembled steel bridge has the characteristics of simple structure, light and handy components, convenient transportation, flexible combination, quick erection, convenient disassembly and assembly, repeatable utilization of the components, high bearing capacity, high structural rigidity, long fatigue life and the like, can be combined into bridges with different spans, types and purposes according to engineering design requirements, plays an important role in the fields of military transportation, rescue and relief work, national defense construction, hydraulic engineering, road traffic and the like at home and abroad, and is widely applied. The assembled steel bridge is composed of a base, a bridge column and a bridge body, wherein the base is fixed on the ground in advance, the bridge column is erected on the base, the bridge body is erected on the bridge column finally, the bottom end of the bridge column is connected with the base, the top end of the bridge column is connected with the bottom of the bridge body in a manner of inserting the steel column, for example, the steel column arranged on the base is inserted into an opening at the bottom end of the bridge column, and the steel column arranged at the top end of the bridge column is inserted into an opening at the joint at the bottom of the bridge body, so that the assembly of the steel bridge is realized, and the efficiency is high. The assembled steel bridge has the defects that the base, the bridge column and the bridge body are assembled and positioned in an inserting mode by virtue of a plurality of steel columns, the steel columns arranged in a rectangular array are completely relied on to realize fixation, and the positioning effect of the steel bridge in the longitudinal direction is not ideal. In view of this, we propose an assembled steel bridge and a method of constructing it. Disclosure of Invention 1. Technical problem to be solved The invention aims to provide an assembled steel bridge and a construction method thereof, which are used for solving the problems in the background technology. 2. Technical proposal The assembled steel bridge comprises a sleeve, a positioning pipe and an assembling mechanism formed by a fixing structure, wherein the fixing structure is arranged in the positioning pipe, the fixing structure comprises a connecting component, a movable component A, a limiting ring, a movable component and a movable component B, the connecting component is arranged at the bottom of an inner cavity of the positioning pipe, the movable component A is arranged in a gap between the connecting component and the inner cavity of the positioning pipe, the movable component B is arranged above the inner cavity of the positioning pipe, the limiting ring is fixedly arranged in the inner cavity of the positioning pipe, the movable component penetrates through the limiting ring, the bottom end of the movable component is in contact with the movable component A, and the top end of the movable component is in contact with the movable component B. Preferably, the connecting assembly comprises a connecting column and a plurality of connecting plates, wherein the connecting column is arranged in the middle of the bottom of the inner cavity of the positioning tube, the connecting plates are fixedly arranged on the outer wall of the connecting column in an annular array, and one ends of the connecting plates, which are away from the connecting column, are fixedly connected with the inner cavity wall of the positioning tube. Preferably, the movable assembly A comprises a plurality of movable blocks A which are arranged in a ring-shaped array in a sliding manner and are arranged in a through hole A formed in the bottom of the positioning pipe; The device comprises a movable block A, a spring A, an extrusion block and a positioning tube, wherein the outer side of the movable block A is provided with an arc inclined plane, the arc inclined plane faces upwards, the inner side of the movable block A is provided with a vertical plane, the spring A is arranged between the inner side of the movable block A and the outer wall of a connecting column, two ends of the spring A are fixedly connected with the inner side of the movable block A and the outer wall of the connecting column respectively, the extrusion block is fixedly arranged at the top end of the movable block A, the outer side of the extrusion block is provided with an arc surface, the arc surface is matched with the inner cavity wall of the positioning tube, and the inner side of the extrusion block is provided with an inclined plane. The movable assembly B comprises a plurality of movable blocks B which are arranged in a through hole B formed in the top of the positioning tube in a