CN219218727U - Rear anchoring weight device of middle-bearing steel arch bridge - Google Patents
Rear anchoring weight device of middle-bearing steel arch bridge Download PDFInfo
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- CN219218727U CN219218727U CN202223241374.1U CN202223241374U CN219218727U CN 219218727 U CN219218727 U CN 219218727U CN 202223241374 U CN202223241374 U CN 202223241374U CN 219218727 U CN219218727 U CN 219218727U
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Abstract
The application relates to a well hold-down steel arch bridge post-anchor ballast device, it includes: the side pier comprises a solid section and a hollow section, and the hollow section is positioned at the bottom end of the solid section; one end of the side span steel beam is arranged on the solid section; one end of the anchoring structure is anchored with the side span steel girder, and the other end of the anchoring structure penetrates through the solid section and is anchored in the hollow section. Compared with the arrangement that the side span steel girder is weighted and the truss node is provided with the hanging weight or the temporary counterweight platform is added, after the side span steel girder of the steel arch bridge is erected, the side span steel girder is only anchored through the anchoring structure, so that the economic cost is reduced, the anti-overturning moment of the steel arch bridge is increased, one end of the anchoring structure is anchored to the side span steel girder, and the other end is anchored to the side pier solid section, the operation is convenient, and the construction efficiency can be improved.
Description
Technical Field
The application relates to the field of bridge construction, in particular to a rear anchoring weight pressing device for a middle-bearing steel arch bridge.
Background
In the construction process of cantilever erection of the middle span of the steel arch bridge, the overturning moment generated by the dead weight of the middle span steel beam and the construction load is always larger than the anti-overturning moment generated by the dead weight of the side span steel beam, and measures are needed to be taken for increasing the anti-overturning moment of the side span steel beam so as to meet the requirement of an anti-overturning stability coefficient.
The traditional girder erection process generally adopts a ballast form to increase anti-overturning moment, and a hoisting weight is arranged at the bridge deck ballast or truss node of the side span, or a temporary counterweight platform is added.
The mode is long in weight time, large in weight load, large in construction site occupation and long in occupation time, and because bridge deck structural strength is limited, the weight has to be increased in weight range to reduce bridge deck pressure, so that the problems of reduction of weight arms and increase of occupied bridge deck space are brought, and the side span steel girder anti-overturning moment is increased in the mode, so that the efficiency is low and the economic cost is high.
Disclosure of Invention
The embodiment of the application provides a middle-bearing type steel arch bridge post-anchoring weight device, which aims to solve the problems of low construction efficiency and high economic cost in the prior art that an anti-overturning moment is increased by adopting a weight mode.
In order to achieve the above purpose, the present utility model provides the following technical solutions: a rear anchor weight device for a well-supported steel arch bridge, comprising: the side pier comprises a solid section and a hollow section, wherein the hollow section is positioned at the bottom end of the solid section; one end of the side span steel beam is arranged on the solid section; one end of the anchoring structure is anchored with the side span steel girder, and the other end of the anchoring structure penetrates through the solid section and is anchored in the hollow section.
In some embodiments, the side pier is provided with a through hole to form a hollow section for accommodating the other end of the anchoring structure.
In some embodiments, the through-hole length extension direction is perpendicular to the pier length extension direction.
In some embodiments, the side pier further comprises a preformed tube vertically fixed inside the solid section; the other end of the anchoring structure penetrates through the reserved pipe.
In some embodiments, the anchoring structure comprises: the anchor extension section is detachably connected to one side of the side span steel beam; one end of the anchor cable is detachably connected with the anchor lengthening section, and the other end of the anchor cable penetrates through the reserved pipe and is detachably connected in the hollow section through the anchor head.
In some embodiments, the diameter of the inner wall of the reserve tube is greater than the diameter of the anchor cable.
In some embodiments, the rear anchoring ballast device of the middle-bearing steel arch bridge further comprises an anchoring distribution beam, wherein the anchoring distribution beam is detachably connected to one side of the side span steel beam, and the anchoring distribution beam is positioned at the top of the anchoring long section; and one end of the anchor cable is penetrated with the anchor extension section and is detachably connected with the anchor distribution beam.
In some embodiments, a spherical hinge is provided between the anchor extension and the anchor distribution beam.
In some embodiments, a spacer is disposed between the side span steel beam and the solid section.
The beneficial effects that technical scheme that this application provided brought include:
the embodiment of the application provides a well hold-down steel arch bridge post-anchoring ballast device, compare in setting up in side span girder steel ballast, truss node department and hang the heavy or increase the setting of interim counter weight platform, treat steel arch bridge side span girder steel and erect the back of accomplishing, only anchor the side span girder steel through the anchor structure, reduced economic cost, realize increasing steel arch bridge anti-overturning moment, anchor structure one end in side span girder steel, one end anchor in the solid section of side pier, convenient operation can improve the efficiency of construction.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic overall front structure provided in an embodiment of the present application;
FIG. 2 is a schematic diagram of an overall side structure provided in an embodiment of the present application;
fig. 3 is a schematic front structural view of a side span steel girder, an anchoring distribution girder and an anchoring long section provided in an embodiment of the present application;
fig. 4 is a schematic side structural view of a side span steel girder, an anchoring distribution girder and an anchoring long section according to an embodiment of the present application.
In the figure: 1. a side span steel girder; 2. side piers; 20. a hollow section; 21. a solid section; 22. reserving a pipe; 3. anchoring the distribution beam; 4. spherical hinge; 5. an anchor structure; 50. anchoring the long section; 51. an anchor cable; 52. an anchor head; 6. and (5) cushion blocks.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present application based on the embodiments herein.
The embodiment of the application provides a middle-bearing type steel arch bridge post-anchoring weight device, which can solve the problems of low construction efficiency and high economic cost of adopting a weight mode to increase anti-overturning moment in the related technology.
Referring to fig. 1 to 4, embodiments of the present application provide a rear anchoring ballast device for a center-on steel arch bridge, comprising: the side pier 2, the side span steel beam 1 and the anchoring structure 5, wherein the side pier 2 comprises a solid section 21 and a hollow section 20, and the hollow section 20 is positioned at the bottom end of the solid section 21; one end of the side span steel beam 1 is arranged on the solid section 21; one end of the anchoring structure 5 is anchored with the side span steel girder 1, and the other end is penetrated through the solid section 21 and anchored in the hollow section 20.
This application is compared and is set up in the setting of weighing, truss node department of side span girder steel 1 and hang heavy or increase interim counter weight platform, and after steel arch bridge side span girder steel 1 erect and accomplish, only to span girder steel 1 through anchor structure 5 and anchor, reduced economic cost, realize increasing steel arch bridge anti-overturning moment, with anchor structure 5 one end anchor in side span girder steel 1, one end anchor in side pier 2 solid section 21, convenient operation can improve the efficiency of construction.
The cushion block 6 is arranged between the side span steel beam 1 and the solid section 21, meanwhile, the steel arch bridge erection process needs to be calculated in detail before the anchoring structure 5 is installed, deformation, attitude conversion, roof falling beam value and longitudinal movement value in the steel arch bridge erection process are analyzed, the anchoring position of the anchoring structure 5 on the side span steel beam 1 and the solid section 21 is determined, after the anchoring position is determined, complex embedded part structures such as profile steel are not required to be embedded in the side pier 2, and only holes are required to be formed in the solid section 21 for the anchoring structure 5 to penetrate, and the length extending direction of the holes is the same as that of the side pier 2.
On the basis of the above embodiment, in this embodiment, the anchor structure 5 includes: the anchor long section 50 and the anchor cable 51, wherein the anchor long section 50 is detachably connected to one side of the side span steel girder 1; one end of the anchor cable 51 is detachably connected with the anchor extension section 50, and the other end of the anchor cable penetrates through the reserved pipe 22 and is detachably connected in the hollow section 20 through the anchor head 52.
In this embodiment, when the side span steel beam 1 is manufactured in a factory, the anchoring long section 50 may be first detachably connected to one side of the side span steel beam 1, specifically, the anchoring long section 50 is connected to an end of an upper chord member of the side span steel beam 1, after the side span steel beam 1 is installed and adjusted, one end of the anchor cable 51 is connected to the anchoring long section 50, and since the side pier 2 is provided with a through hole, the extending direction of the length of the through hole is perpendicular to the extending direction of the length of the side pier 2, so as to form a hollow section 20 for accommodating the other end of the anchoring structure 5, the through hole is communicated with a hole in the solid section 21, the other end of the anchor cable 51 is inserted into the hole, and the anchor cable 51 is fixed in the hollow section 20 through the anchor head 52, and the anchor head 52 is detachably connected with the anchor cable 51, so that the anchor cable 51 is convenient to be detached after the arch rib of the steel arch bridge is closed, and the side pier 2 will not generate a negative reaction force when the anchor cable 51 is detached, and can be safely removed.
In order to prevent the anchor cable 51 from rubbing against the solid section 21 when penetrating the solid section 21, the side pier 2 further comprises a reserved pipe 22, the reserved pipe 22 is vertically fixed inside the solid section 21, namely, the reserved pipe 22 is fixed in the hole, the other end of the anchoring structure 5 penetrates into the reserved pipe 22, specifically, one end of the anchor cable 51 penetrates into the reserved pipe 22, the inner wall of the reserved pipe 22 is smooth, the anchor cable 51 is prevented from being damaged due to friction with the anchor cable 51, and the diameter of the inner wall of the reserved pipe 22 is larger than that of the anchor cable 51 for facilitating the anchor cable 51 to penetrate into the reserved pipe 22.
The anchor cable 51 is anchored in the side pier 2, and the weight of the side span steel beam 1 at the top of the side pier 2, the weight of the side span structure and the like are used for enabling the stress of the side pier 2 to be free from tensile force and guaranteeing that the pier body of the side pier 2 is free from cracks.
On the basis of the above embodiment, in this embodiment, the rear anchoring ballast device of the middle-bearing steel arch bridge further includes an anchoring distribution beam 3, a spherical hinge 4 is disposed between the anchoring extension section 50 and the anchoring distribution beam 3, the anchoring distribution beam 3 is detachably connected to one side of the side span steel beam 1, and the anchoring distribution beam 3 is located at the top of the anchoring extension section 50; one end of the anchor cable 51 is provided with an anchor extension section 50 in a penetrating manner and is detachably connected with the anchor distribution beam 3.
In this embodiment, one end of the anchor cable 51 is threaded through the anchor extension section 50 and is connected with the anchor distribution beam 3, and since the spherical hinge 4 is further disposed between the anchor extension section 50 and the anchor distribution beam 3, when the side span steel beam 1 is adjusted, the anchor structure 5 can adapt to a certain rotation angle, and meanwhile, the longitudinal movement amount of the side span steel beam 1 in the temperature rise and fall and the arch rib closure longitudinal movement can also be adapted.
The construction steps of the side span steel beam 1 anchoring are as follows: when the side span steel beam 1 is manufactured in a factory, the end parts of the upper chords of the side span steel beam 1 are connected with the anchor extension sections 50 in advance, and two anchor extension sections 50 are arranged on one side of the side span steel beam 1; when the side pier 2 is constructed, the reserved pipe 22 is pre-buried in the solid section 21 in advance; the side span steel girder 1 is erected, the side span steel girder 1 falls and the side span steel girder 1 longitudinally moves in advance; four anchor heads 52 are arranged in the hollow section 20, then anchor cables 51, spherical hinges 4 and anchoring distribution beams 3 are sequentially arranged on the side span steel beams 1, and each anchoring extension section 50 is provided with two anchor cables 51, namely four anchor cables 51 are arranged on one side of the side span steel beams 1; sequentially and symmetrically stretching the four anchor cables 51 in a grading manner until the four anchor cables reach a design load, and connecting the anchor cables 51 with anchor heads 52; and finally erecting a midspan steel beam, releasing the cable force of the anchor cable 51 on the side span steel beam 1 after the midspan is closed, then removing the anchoring distribution beam 3, the spherical hinged support, the anchor cable 51 and the anchor head 52, and pouring mortar into the reserved pipe 22 in the solid section 21.
In the description of the present application, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of description of the present application and simplification of the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present application. Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
It should be noted that in this application, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing is merely a specific embodiment of the application to enable one skilled in the art to understand or practice the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A rear anchoring ballast device for a well-supported steel arch bridge, comprising:
the side pier (2), the side pier (2) comprises a solid section (21) and a hollow section (20), and the hollow section (20) is positioned at the bottom end of the solid section (21);
one end of the side span steel beam (1) is arranged on the solid section (21);
and one end of the anchoring structure (5) is anchored with the side span steel beam (1), and the other end of the anchoring structure (5) penetrates through the solid section (21) and is anchored in the hollow section (20).
2. The rear anchor weighting device for a well-supported steel arch bridge of claim 1, wherein:
the side pier (2) is provided with a through hole so as to form a hollow section (20) for accommodating the other end of the anchoring structure (5).
3. The rear anchor weighting device for a well-supported steel arch bridge of claim 2, wherein:
the length extending direction of the through hole is perpendicular to the length extending direction of the side pier (2).
4. The rear anchor weighting device for a well-supported steel arch bridge of claim 1, wherein:
the side pier (2) further comprises a reserved pipe (22), and the reserved pipe (22) is vertically fixed inside the solid section (21);
the other end of the anchoring structure (5) penetrates through the reserved pipe (22).
5. A rear anchor weighting device for a well-supported steel arch bridge according to claim 4, wherein the anchoring structure (5) comprises:
the anchoring extension section (50) is detachably connected to one side of the side span steel beam (1);
and one end of the anchor cable (51) is detachably connected with the anchor lengthening section (50), and the other end of the anchor cable (51) penetrates through the reserved pipe (22) and is detachably connected in the hollow section (20) through the anchor head (52).
6. The rear anchor weighting device for a well-supported steel arch bridge of claim 5, wherein:
the diameter of the inner wall of the reserved pipe (22) is larger than that of the anchor cable (51).
7. The rear anchor weighting device for a well-supported steel arch bridge of claim 5, wherein:
the rear anchoring weighting device of the middle-bearing steel arch bridge further comprises an anchoring distribution beam (3), wherein the anchoring distribution beam (3) is detachably connected to one side of the side span steel beam (1), and the anchoring distribution beam (3) is positioned at the top of the anchoring long section (50);
one end of the anchor cable (51) is penetrated with an anchor extension section (50) and is detachably connected with the anchor distribution beam (3).
8. The rear anchor weighting device for a well-supported steel arch bridge of claim 7, wherein:
a spherical hinge (4) is arranged between the anchoring extension section (50) and the anchoring distribution beam (3).
9. The rear anchor weighting device for a well-supported steel arch bridge of claim 1, wherein:
cushion blocks (6) are arranged between the side span steel beams (1) and the solid sections (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223241374.1U CN219218727U (en) | 2022-12-02 | 2022-12-02 | Rear anchoring weight device of middle-bearing steel arch bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223241374.1U CN219218727U (en) | 2022-12-02 | 2022-12-02 | Rear anchoring weight device of middle-bearing steel arch bridge |
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| CN219218727U true CN219218727U (en) | 2023-06-20 |
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| CN202223241374.1U Active CN219218727U (en) | 2022-12-02 | 2022-12-02 | Rear anchoring weight device of middle-bearing steel arch bridge |
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- 2022-12-02 CN CN202223241374.1U patent/CN219218727U/en active Active
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