CN220035174U - Middle-bearing type tie-bar arch bridge thrust balance structure - Google Patents

Abstract

The utility model relates to the field of bridge construction, in particular to a middle-supported type tie-bar arch bridge thrust balance structure, which comprises a main beam, arch ribs and concrete arch seats, wherein the two groups of arch ribs are oppositely arranged at two sides of a main beam axis, the concrete arch seats are oppositely arranged at two ends of the arch ribs, the main beam penetrates through the middle part of the arch ribs, the concrete arch seats are arranged at the lower side of the main beam, a plurality of groups of boxes are arranged in the main beam, the boxes are parallel to the main beam axis and penetrate through the main beam, tie bars are arranged in the boxes, two groups of end cross beams are oppositely arranged at two ends of the main beam, the two ends of the tie bars are anchored in the end cross beams, and one end, far away from the arch ribs, of the concrete arch seats is connected with the end cross beams.

Description

Middle-bearing type tie-bar arch bridge thrust balance structure

Technical Field

The utility model relates to the field of bridge construction, in particular to a middle-bearing type tied-arch bridge thrust balance structure.

Background

The arch bridge can be divided into an upper arch bridge, a middle arch bridge and a lower arch bridge according to the position of the bridge deck. Wherein the bridge deck is a middle bearing type in the middle part of the arch.

Most of the existing middle-bearing arch bridges are thrust arch bridges, and the horizontal thrust of a main arch is transmitted to a foundation by a foundation. The thrust arch bridge has high requirements on the terrain and geology during construction because the foundation needs to balance the thrust in the horizontal direction of the main arch, and is unfavorable for construction in different geological environments.

Based on the thrust balance structure, the utility model designs a middle-bearing type tied-arch bridge thrust balance structure to solve the problems.

Disclosure of Invention

The utility model aims to provide a thrust balance structure of a middle-bearing type tied-arch bridge, so as to solve the technical problems.

In order to achieve the above purpose, the utility model provides the following technical scheme: the utility model provides a well bear type tie rod arch bridge thrust balance structure, includes girder, arch rib and concrete arch seat, two sets of the arch rib is opposite the girder axis both sides, concrete arch seat is opposite the arch rib both ends, the girder passes the arch rib middle part, concrete arch seat is located the girder downside, be equipped with multiunit box in the girder, the box parallel with the girder axis sets up, just the box both ends run through the girder, be equipped with the tie rod in the box, the girder both ends are opposite and are equipped with two sets of end crossbeams, the tie rod both ends anchor in the end crossbeam, the concrete arch seat keep away from arch rib one end with the end crossbeam links to each other.

Preferably, the main beams, the end cross beams and the concrete arch base are mutually matched to form a triangular area.

Preferably, the arch ribs are obliquely arranged relative to the main beam, and the middle parts of the two opposite groups of arch ribs are connected.

Preferably, the inner inclination angle of the arch rib is 78 degrees.

Preferably, slings are arranged between the arch ribs and the main beams.

Preferably, the sling is obliquely arranged, and the position of the anchor point under the sling is unchanged relative to the main beam.

Compared with the prior art, the utility model has the beneficial effects that: the tie bars are arranged in the main beams, the end cross beams and the concrete arch seats are used for connecting the tie bars with the two ends of the arch ribs, and the longitudinal pretension force of the tie bars and the horizontal thrust generated by the arch ribs are used for counteracting each other, so that the purpose of balancing the thrust of the middle-bearing arch bridge is achieved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings that are needed for the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a top view of the overall structure of the present utility model;

fig. 3 is a schematic cross-sectional view of the girder structure of the present utility model.

In the drawings, the list of components represented by the various numbers is as follows:

1-girder, 11-cabinet, 12-tie bar, 2-arch rib, 21-sling, 3-concrete arch base, 4-end beam, 5-triangle.

Description of the embodiments

The following description of the technical solutions in the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, based on the embodiments in the utility model, which a person of ordinary skill in the art would obtain without inventive faculty, are within the scope of the utility model.

In connection with fig. 1-3:

the utility model provides a well bear formula tie rod arch bridge thrust balanced structure, including girder 1, arch rib 2 and concrete arch seat 3, two sets of arch rib 2 opposition in girder 1 axis both sides, concrete arch seat 3 opposition in arch rib 2 both ends, girder 1 passes arch rib 2 middle part, concrete arch seat 3 locates girder 1 downside, be equipped with multiunit case room 11 in the girder 1, case room 11 is parallel and girder 1 axis sets up, and case room 11 both ends run through girder 1, be equipped with tie rod 12 in the case room 11, girder 1 both ends opposition are equipped with two sets of end crossbeams 4, tie rod 12 both ends anchor in end crossbeam 4, concrete arch seat 3 keeps away from arch rib 2 one end and links to each other with end crossbeam 4.

Furthermore, the main beam 1, the end cross beam 4 and the concrete arch base 3 are mutually matched to form a triangular area 5. The mutual matching is triangular, which is favorable for improving the structural stability.

Further, the arch ribs 2 are obliquely arranged relative to the main beam 1, and the middle parts of the two opposite groups of arch ribs 2 are connected. The two groups of arch ribs and the main beams are mutually matched to form two groups of triangular structures, so that the stability of the structure is improved.

Further, the inward inclination of the rib 2 is 78 °.

Further, slings 21 are arranged between the arch ribs 2 and the main beams 1.

Further, the sling 21 is obliquely arranged, and the position of the lower anchor point of the sling 21 relative to the main beam 1 is unchanged.

The specific application embodiment of the utility model is as follows:

the tie bars 12 penetrate through the main beam 1 through the chambers 11 arranged in the main beam 1, two ends of the tie bars 12 are fixedly sealed in the end cross beams 4, two ends of the tie bars 12 are connected with the arch ribs 2 through the end cross beams 4, the concrete arch seats 3 and the like, and the longitudinal pretension force of the tie bars 12 and the horizontal thrust generated by the arch ribs 2 are mutually offset, so that the thrust of the supported arch bridge is balanced, the foundation does not need to bear the thrust in the horizontal direction of the arch ribs when the bridge body is built, and the supported arch bridge can be widely adapted to different geological environments for construction.

The side of the girder 1 far away from the arch rib 2 is matched with the end cross beam 4 and the concrete arch base 3 to form a triangular area 5, which is beneficial to improving the supporting stability of the girder 1 and the end far away from the arch rib 2. The unstable support of the main girder 1 in the area where the main girder is not connected to the arch rib 2 through the slings 21 is avoided.

The arch rib 2 is obliquely arranged on the main beam 1, the tops of the two groups of arch ribs 2 which are oppositely arranged on two sides of the main beam 1 are connected with each other, the tops of the two groups of arch ribs 2 are connected with the main beam 1 to form two groups of symmetrical triangles, and stability of one end, far away from the main beam 1, of the tops of the arch ribs 2 is guaranteed.

In the description of the utility model, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "another end," "upper," "one side," "top," "inner," "front," "center," "two ends," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the utility model and simplify the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "configured," "connected," "secured," "screwed," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, or be integrated; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms in the utility model will be understood by those of ordinary skill in the art.

Although embodiments of the utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. A middle-bearing type tie-bar arch bridge thrust balance structure is characterized in that: including girder (1), arch rib (2) and concrete arch seat (3), two sets of arch rib (2) are opposite to girder (1) axis both sides, concrete arch seat (3) are opposite to be located arch rib (2) both ends, girder (1) are passed arch rib (2) middle part, concrete arch seat (3) are located girder (1) downside, be equipped with multiunit case room (11) in girder (1), case room (11) parallel with girder (1) axis sets up, just case room (11) both ends run through girder (1), be equipped with tie rod (12) in case room (11), girder (1) both ends are opposite to be equipped with both sets of end crossbeam (4), tie rod (12) both ends anchor in end crossbeam (4), concrete arch seat (3) are kept away from arch rib (2) one end with end crossbeam (4) link to each other.

2. A mid-span tied-arch bridge thrust balancing structure according to claim 1, wherein: the main beam (1), the end cross beam (4) and the concrete arch base (3) are mutually matched to form a triangular area (5).

3. A mid-span tied-arch bridge thrust balancing structure according to claim 1, wherein: the arch ribs (2) are obliquely arranged relative to the main beam (1), and the middle parts of the two opposite groups of arch ribs (2) are connected.

4. A mid-span tied-arch bridge thrust balancing structure according to claim 3, wherein: the inward inclination angle of the arch rib (2) is 78 degrees.

5. A mid-span tied-arch bridge thrust balancing structure according to claim 1, wherein: slings (21) are arranged between the arch ribs (2) and the main beams (1).

6. A mid-span tied-arch bridge thrust balancing structure as defined in claim 5, wherein: the sling (21) is obliquely arranged, and the position of the anchor point under the sling (21) relative to the main beam (1) is unchanged.