CN-122013656-A - Detachable segment spliced superposed beam and construction method thereof

CN122013656ACN 122013656 ACN122013656 ACN 122013656ACN-122013656-A

Abstract

The invention relates to the field of beam construction, in particular to a detachable segment spliced superposed beam and a construction method thereof, the detachable segment spliced superposed beam comprises a spandrel beam body and segment beams arranged on the spandrel beam body, wherein the segment beams and the spandrel beam body are fixed through a reinforcing component, the number of the segment beams and the spandrel beam bodies is multiple, and prestressed reinforcements are arranged between the adjacent spandrel beam bodies in a penetrating way.

Inventors

ZHOU JIALIANG
HUANG WENJIN
JIANG CHUNSONG
SHE ZHIMIN
LIN JIANHUI
LI XUEFENG

Assignees

莆田学院

Dates

Publication Date: 20260512
Application Date: 20260415

Claims (6)

1. The utility model provides a collapsible section assembles composite beam, its characterized in that includes spandrel girder body (2) and installs section roof beam (1) on spandrel girder body (2), fix through the strong subassembly between section roof beam (1) and spandrel girder body (2), and the quantity of section roof beam (1) and spandrel girder body (2) all is provided with a plurality ofly, wears to be equipped with prestressing steel bar (3) between adjacent spandrel girder body (2), prestressing steel bar (3) both sides terminal support through a fixed sleeve (4) respectively and locate the spandrel girder body (2) surface that corresponds; The section beam (1) comprises a section beam body (11) and a preformed piece (12), wherein an inwards-sunken connecting groove is formed in the middle of the lower end of the section beam body (11), when the section beam body (11) is fixed on the spandrel beam body (2), the spandrel beam body (2) is embedded into the connecting groove, step edges are formed on the surfaces, close to two sides of the connecting groove, of the lower end of the section beam body (11), the preformed piece (12) is respectively arranged in the two step edges, an extending part which extends obliquely towards the spandrel beam body (2) is arranged at the lower end of the preformed piece (12), and an adjusting opening is formed between the extending part and the spandrel beam body (2); the reinforcing assembly comprises an extrusion sliding block (14) arranged in the adjusting port and a connecting bolt (15) penetrating through the segment beam body (11) and extending into the spandrel beam body (2), one side of the extending part, which is close to the extrusion sliding block (14), is obliquely downwards arranged, the extrusion sliding block (14) is respectively abutted against the extending part of the preformed piece (12) and the surface of the spandrel beam body (2), fastening nuts (16) are respectively arranged on the upper side and the lower side of the segment beam body (11) and one side, which is close to the segment beam body (11), of the spandrel beam body (2), the fastening nuts (16) which are adjacent to each other from top to bottom are arranged on the same axle center, and the connecting bolt (15) sequentially penetrates through each fastening nut (16) from top to bottom and is in threaded connection with each fastening nut (16); the surface of the fastening nut (16) is provided with a plurality of reinforcing ribs which are inserted into the corresponding segmental beam body (11) and the spandrel girder body (2).
2. The detachable segment spliced laminated beam according to claim 1, wherein a conical threaded rod (13) is arranged between the extrusion sliding block (14) and the segment beam body (11), arc-shaped grooves are formed on adjacent surfaces of the extrusion sliding block (14) and the segment beam body (11), and two arc-shaped grooves form a threaded hole in threaded connection with the conical threaded rod (13); The section of cone threaded rod (13) is the taper structure, and small-bore one end sets up towards the screw hole, the external diameter of cone threaded rod (13) heavy-calibre one end is greater than the internal diameter of screw hole, when gradually with cone threaded rod (13) screw in screw hole, extrudees slider (14) and keeps away from festival section roof beam body (11) gradually to follow the extending direction of extension.
3. The detachable segment spliced laminated beam according to claim 2, wherein a first embedding groove (111) is formed in a surface of the segment beam body (11) close to the threaded hole, a second embedding groove (141) is formed at a position corresponding to the first embedding groove (111) on the extrusion sliding block (14), and the first embedding groove (111) and the second embedding groove (141) are parallel to the extension part; the large-caliber one end surface of the conical threaded rod (13) is also provided with a clamping groove, an anti-falling clamping plate (131) is arranged in the clamping groove, and after the conical threaded rod (13) is screwed into the threaded hole, the anti-falling clamping plate (131) is embedded into the first embedded groove (111) and the second embedded groove (141) to fix the conical threaded rod (13); The adjacent surfaces of the preformed piece (12) and the extrusion sliding block (14) are provided with an embedded groove (121), a second embedded groove (141) is arranged at the corresponding position of the extrusion sliding block (14) and the embedded groove (121), a strip-shaped limiting block (122) is arranged in the embedded groove (121), and when the extrusion sliding block (14) is arranged at an adjusting port between the extending part and the spandrel girder body (2), the strip-shaped limiting block (122) is embedded into the second embedded groove (141).
4. A detachable segment spliced laminated beam according to claim 3, wherein mounting grooves are formed in the left side and the right side of the segment beam body (11), components (5) are arranged in the mounting grooves, the components (5) extend outwards to the surfaces of the segment beam bodies (11), the components (5) arranged on two adjacent segment beam bodies (11) are symmetrically arranged, an inward concave movable cavity (112) is formed in the segment beam bodies (11) close to the components (5), and expansion joints are formed between the two adjacent segment beam bodies (11); The assembly (5) comprises an adjusting wheel (51), a screw rod (52), a threaded sleeve (53) and a dust cover (54), a movable cavity (112) is formed in the corresponding position of the mounting groove and the adjusting wheel (51), a sliding groove (113) is formed in the corresponding position of the mounting groove and the threaded sleeve (53), the adjusting wheel (51) is arranged in the movable cavity (112), the threaded sleeve (53) is arranged in the sliding groove (113), the dust cover (54) is arranged on one side, close to the surface of the section beam body (11), of the mounting groove, the screw rod (52) penetrates through the threaded sleeve (53) and the dust cover (54), and the screw rod (52) is in threaded connection with the threaded sleeve (53).
5. A removable segment spliced composite beam according to claim 4, wherein the threaded sleeves (53) are provided with protrusions extending into the threaded sleeves (53) on each side, and when the screw (52) is forced to move, the threaded sleeves (53) move in the runner (113); The adjusting wheel (51) is provided with a plurality of magnetic metal plates (511) in an annular array on the circumferential surface, and when the magnets attracted to the magnetic metal plates (511) are pushed in the direction parallel to the adjusting wheel (51), the adjusting wheel (51) rotates in the moving direction of the magnets; The adjusting wheel (51) is internally provided with a positioning hole, a positioning bolt (55) inserted into the positioning hole is arranged at the corresponding position of the movable cavity (112) and the positioning hole, a spring (551) is sleeved outside the positioning bolt (55), and two ends of the spring (551) are respectively propped against the surfaces of the adjusting wheel (51) and the movable cavity (112).
6. A construction method of a detachable segment spliced laminated beam, based on the construction method of claim 5, characterized in that during construction, the bearing beam bodies (2) are required to be installed and arranged to the ground in sequence, the bearing beam bodies (2) are sequentially penetrated through by prestressed reinforcements (3), then the whole bearing beam bodies (2) are fixed through fixing sleeves (4), then the segment beam bodies (11) are sequentially fixed at the upper ends of the bearing beam bodies (2), then a preformed piece (12) is installed below the bearing beam bodies (2), and the connecting ends of the segment beam bodies (11) and the bearing beam bodies (2) and the connecting ends of the preformed piece (12) and the bearing beam bodies (2) are fixed through a reinforcing component; If the width of the spandrel girder body (2) is smaller than the width of a connecting groove in the middle of the lower end of the segmental girder body (11) or the fastening nut (16) positioned on the spandrel girder body (2) is not in the same axis as the fastening nut (16) on the segmental girder body (11) due to manufacturing error, the conical threaded rod (13) is screwed into a threaded hole formed between the preformed piece (12) and the segmental girder body (11), and the extrusion sliding block (14) is moved along the length direction of the extension part along with the gradual screwing of the segmental girder body (11), the spandrel girder body (2) is closed and extruded, and the segmental girder body (11) is deviated.

Description

Detachable segment spliced superposed beam and construction method thereof Technical Field The invention relates to the field of beam construction, in particular to a detachable segment spliced superposed beam and a construction method thereof. Background In conventional bridge structures, the beam body is usually constructed by cast-in-place concrete or integrally prefabricated, and the components are generally formed integrally by rigid connection or irreversible wet joints. The construction mode has certain integral advantages, but once the Liang Tiyin is subjected to local damage caused by fatigue, overload, corrosion or earthquake and the like, the targeted local repair is difficult to realize, the whole beam is often required to be dismantled and reconstructed, so that the construction method has the advantages of large engineering quantity, long repair period and high cost; For this reason, some research and engineering practices began to explore beam structures with component-replaceable capabilities. However, the existing replaceable beam body structure still has obvious defects in practical application that firstly, a large gap is easily generated between a replaced beam surface component and an original component to influence the continuity and bearing performance of the structure, secondly, the beam surface component is usually a preformed piece and is influenced by manufacturing errors and batch differences, the components with different batches and different mounting sizes are difficult to completely adapt to the beam body, and the problems of height differences, central shaft deviation, component deflection, abnormal spacing and the like easily occur after the beam surface component is mounted, so that the structural integrity and the service performance are seriously influenced. In summary, the existing beam structure has obvious limitations in terms of detachability, component compatibility, mounting accuracy and the like. Therefore, development of a segment spliced laminated beam structure compatible with beam surface structural members of different batches and different sizes and a matched construction method thereof are needed to be developed, so that quick repair and member recycling after local damage are realized, applicability of the beam surface structural members of various types is improved, and overall toughness of an infrastructure and full life cycle economic benefits are enhanced. Disclosure of Invention The invention provides a detachable segment spliced laminated beam and a construction method thereof, which overcome the defects described in the background art. The technical scheme adopted for solving the technical problems is as follows: The utility model provides a removable section assembles coincide roof beam, includes spandrel girder body and installs the section roof beam on spandrel girder body, fix through the strong subassembly between section roof beam and the spandrel girder body, and the quantity of section roof beam and spandrel girder body all is provided with a plurality ofly, wears to be equipped with prestressing steel between the adjacent spandrel girder body, prestressing steel both sides terminal support respectively through a fixed sleeve and locate the spandrel girder body surface that corresponds; The section beam comprises a section beam body and a preformed piece, wherein the middle part of the lower end of the section beam body is provided with an inwards concave connecting groove, when the section beam body is fixed on the spandrel beam body, the spandrel beam body is embedded into the connecting groove, the surfaces of the lower end of the section beam body, which are close to the two sides of the connecting groove, are respectively provided with step edges, the preformed piece is respectively arranged in the two step edges, the lower end of the preformed piece is provided with an extending part which extends obliquely towards the spandrel beam body, and an adjusting port is formed between the extending part and the spandrel beam body; The reinforcing assembly comprises an extrusion sliding block arranged in the adjusting port and a connecting bolt penetrating through the segment beam body and extending into the spandrel girder body, one side of the extending part, which is close to the extrusion sliding block, is obliquely downwards arranged, the extrusion sliding block is respectively propped against the extending part of the preformed piece and the surface of the spandrel girder body, fastening nuts are respectively arranged on the upper side and the lower side of the segment beam body and one side, which is close to the segment beam body, of the spandrel girder body, the upper and lower adjacent fastening nuts are arranged in the same axis, and the connecting bolt sequentially penetrates through each fastening nut from top to bottom and is in threaded connection with each fastening nut; the surface of the fastening nut is provided with a plura