CN220521119U - Unidirectional movable support for concrete girder - Google Patents

Abstract

The utility model discloses a unidirectional movable bracket for a concrete girder, which relates to the technical field of bridge engineering and comprises a base for connecting with a pier, a unidirectional movable support arranged between the pier and a girder body, two limiting devices arranged at the bottom of the girder body, wherein the first ends of the two limiting devices are detachably arranged on the girder body 4, the second ends of the two limiting devices extend to the outer side of the base, and the two limiting devices are oppositely arranged in the transverse direction to form guide grooves for guiding the base to move longitudinally; the utility model effectively reduces construction cost and social influence, and simultaneously avoids bridge structure damage and implementation risk of replacing the unidirectional movable support.

Description

Unidirectional movable support for concrete girder

Technical Field

The utility model relates to the technical field of bridge engineering, in particular to a unidirectional movable support for a concrete girder.

Background

Bridge is a structure which is generally erected on rivers, lakes and seas and can smoothly pass vehicles, pedestrians and the like. In order to adapt to the traffic industry of modern high-speed development, bridges are also spreading to span mountain stream, poor geology or buildings which are erected to meet other traffic needs and enable the traffic to be more convenient. The bridge is generally composed of an upper structure, a lower structure, a support and an accessory structure, wherein the upper structure is also called a bridge span structure and is a main structure for crossing obstacles; the lower structure comprises a bridge abutment, a bridge pier and a foundation; the support is a force transmission device arranged at the supporting position of the bridge span structure and the bridge pier or the bridge abutment; the auxiliary structure is bridge end butt strap, cone slope protection, bank protection, diversion engineering, etc.

At present, aiming at the situation of incorrect mounting of the support in the construction process, the conventional method is to replace the problem support, but the replacement of the support needs to lift the beam body, but the plane space of the pier top of a part of bridge is insufficient, the jack arrangement is limited, and facilities such as temporary supports or steel anchor ear brackets and the like are required to be arranged, so that the replacement construction cost is high; liang Tiding L of the load-holding process possibly relates to temporary control of bridge deck traffic, and the social influence is large; in the process of jacking and falling the beam, the requirement on the beam body jacking and falling synchronism is high, the bridge structure damage caused by improper jacking is prevented, and the project implementation risk is high.

Based on this, it is necessary to propose a unidirectional mobile support for a concrete girder to solve or at least alleviate the above drawbacks.

Disclosure of Invention

The utility model mainly aims to provide a unidirectional movable support for a concrete girder, and aims to solve the technical problem that a bridge structure is damaged due to the fact that a support is installed incorrectly and needs to be replaced in the existing bridge construction process.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides a one-way movable support for concrete girder, is including being used for with the base of pier connection, locating one-way movable support between pier and the roof beam body, one-way movable support set up in on the base, still including set up in two stop device of roof beam body bottom, two stop device's first end is all detachably located on the roof beam body 4, and two stop device's second end all extends to the outside of base, two stop device is laid relatively along the horizontal and is formed with and is used for guiding the base is along longitudinal movement's guide slot.

Further, the limiting device comprises an upper plate and a side plate vertically arranged on one side of the upper plate, and the upper plate is detachably arranged at the bottom of the beam body.

Further, a plurality of anchor bolt holes are formed in the upper plate in an array mode, and anchor bolts are respectively inserted into the anchor bolt holes.

Further, the device further comprises a stiffening rib, one end of the stiffening rib is fixedly connected with the upper plate, the other end of the stiffening rib is fixedly connected with the side panel, and the side panel is perpendicular to the upper plate.

Further, the side panel is connected with a sliding plate towards the end face of the unidirectional movable support in a sliding manner, and the sliding plate is fixedly arranged on the unidirectional movable support.

Further, the edges of the stiffening ribs, the upper plate and the side plates are all chamfered.

Further, the sliding plate is made of tetrafluoroethylene.

The utility model has the following beneficial effects:

compared with the traditional unidirectional movable support, when the mounting direction of the support is wrong, the replacement of the original support and the new support is not required, and the position of the limiting device is adjusted, so that the need of a jack to jack up the beam body is avoided, the replacement difficulty is reduced, meanwhile, the problems that the plane space of part of bridge pier top is insufficient, the jack arrangement is limited, and the replacement construction cost is high due to the need of temporary support or steel hoop brackets and other facilities are required;

secondly, the problem that temporary traffic control of the bridge deck is possibly involved in the Liang Tiding liter load holding process is further solved, and the social influence is large; in the process of jacking and falling the beam, the requirement on the beam body jacking and falling synchronism is high, and the problem of high project implementation risk caused by bridge structure damage due to improper jacking is prevented.

In addition to the objects, features and advantages described above, the present utility model has other objects, features and advantages. The present utility model will be described in further detail with reference to the drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

FIG. 1 is a schematic view of a structure of a unidirectional cradle in a normal state;

FIG. 2 is a schematic view of the structure of the limit device of the present utility model when assembled;

fig. 3 is a schematic structural view of a limiting device in the present utility model.

Legend description: 1. bridge piers; 2. a base; 3. a limiting plate; 4. a beam body; 5. a limiting device; 6. a unidirectional movable support; 7. embedding a steel plate; 8. a slide plate; 9. an anchor bolt; 10. an upper plate; 11. a side panel; 12. stiffening ribs; 13. anchor bolt holes.

Detailed Description

It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all the directional indicators in the embodiments of the present utility model are only used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture, and if the specific posture is changed, the directional indicators are correspondingly changed.

Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The bridge comprises a girder body 4 and a pier 1, a unidirectional movable support is arranged between the girder body 4 and the pier 1 as shown in fig. 1, the unidirectional movable support comprises a base 2, in the embodiment, the base 2 is a rubble, a unidirectional movable support 6 is arranged at the upper end of the base 2, and it is noted that in an actual scene, the unidirectional movable support 6 has a rectangular cross section and is fixedly provided with assembly parts on the end faces at the left side and the right side;

in the prior art, the lower surface of the beam body 4 is provided with an embedded steel plate 7, the left and right sides of the lower end surface of the embedded steel plate 7 are respectively and fixedly provided with a limiting plate 3, the two limiting plates 3 are respectively and correspondingly arranged on the two sides of the unidirectional movable support 6, the distance between the outer side surfaces of the two limiting plates 3 is smaller than or equal to the distance between the left and right end surfaces of the base 2, it is to be understood that in order to avoid the unidirectional movable support 6 from sliding transversely, during assembly, the end surfaces of the assembly parts arranged on the left and right sides of the unidirectional movable support 6, which are far away from each other, are respectively contacted with the inner side surfaces of the corresponding limiting plates 3, for example, the left end surface of the assembly parts on the left side and the right end surface of the limiting plates 3 on the left side are contacted, but simultaneously, during the unidirectional movable support 6 moves forwards and backwards, the assembly parts do sliding motion relative to the limiting plates 3, and the specific structure of the assembly parts can refer to the existing product structure on the market, and will not be repeated.

However, in actual operation, when the unidirectional movable bracket is installed on the upper end surface of the bridge pier 1, a problem occurs in the installation direction due to negligence, so that the unidirectional movable bracket needs to be replaced, and the currently adopted unidirectional movable bracket 6 needs to be replaced, the limiting plate 3 needs to be cut and then subjected to 90-degree angle conversion, but the design of the embedded light plate 7 is insufficient to enable the limiting plate 3 to be subjected to re-welding operation, on the other hand, the operation space between the beam body 4 and the bridge pier 1 is insufficient to support an operator for welding operation, so that the beam body 4 needs to be lifted by an erection jack, and meanwhile, under the condition that the operation space between the beam body 4 and the bridge pier 1 is insufficient, the situation that the beam body is supported by the erection jack is difficult to be provided, so that the method has higher risk and economy for maintenance;

based on this technical problem, through adopting the lower terminal surface detachable setting at the roof beam body 4 be used for carrying out two stop device 5 that restrict to unidirectional movable support 6 in the left and right directions, as shown in fig. 2, effectively reduced the demand to operating space to reduce risk and implementation cost.

Specifically, the first ends of the two limiting devices 5 are detachably disposed on the beam body 4, the second ends of the two limiting devices extend to the outer side of the base 2, and the two limiting devices 5 are arranged transversely and oppositely to form a guide groove for guiding the base 2 to move longitudinally.

Referring to fig. 3, the limiting device 5 includes an upper plate 10, and a side panel 11 fixed on one side of the upper plate 10, in this embodiment, the upper plate 10 and the side panel 11 form an L-shaped entity, a plurality of stiffening ribs 12 are arranged in an array between the upper plate 10 and the side panel 11 to enhance the connection strength between the upper plate 10 and the side panel 11, and secondly, a plurality of anchor holes 13 are arranged in an array on the upper plate 10, in this embodiment, the plurality of anchor holes 13 are divided into four groups according to an equal division principle, and the plurality of stiffening ribs 12 are arranged in an array to equally divide the lower end surface of the upper plate 10 into a plurality of areas, the four groups of anchor holes 13 are in one-to-one correspondence with the four areas, that is, a group of anchor holes 13 are arranged in one area, and the anchor bolts 9 are fixed on the beam body 4 through the anchor holes 13;

further, in order to ensure the strength of the device, the upper plate 10 and the side plates 11 are both made of metal steel, and secondly, the sliding plates 8 are bonded to the end surfaces of the left and right sides of the base 2, the sliding plates 8 are made of tetrafluoroethylene material, so as to avoid the excessive friction between the sliding plates 8 and the side plates 11 and influence the sliding of the unidirectional movable support 6 in the front-rear direction, and therefore, butter is coated between the sliding plates 8 and the side plates 11 to enhance the relative sliding movement between the sliding plates 8 and the side plates 11; it should be understood that the base 2, the unidirectional movable support 6 and the bridge pier 1 are fixedly connected to form an integral structure, so that any one of the three objects is limited to meet the engineering requirement.

The method for processing the mounting direction errors of the unidirectional movable support 6 by using the limiting device 5 for processing the mounting direction errors of the unidirectional movable support comprises the following steps:

step 1: cutting the limiting plate 3 of the original unidirectional movable support 6 by adopting a cutting sheet or a gas cutting mode, thereby releasing the constraint of the original unidirectional movable support 6 in the wrong direction;

step 2: the anchor bolt hole 13 on the limiting device 5 is positioned on the bottom surface of the beam body 4 to drill a hole for installing the anchor bolt 9, and the upper plate 10 is tightly propped against the embedded steel plate 7 of the original unidirectional movable support 6 so as to realize the limiting effect. The side panel 11 is closely attached to the sliding plate 8 arranged on the side surface of the base 2 within the height range of the base 2 so as to realize free sliding in the other direction;

step 3: the concrete contact surface between the upper plate 10 and the ground of the beam body 4 adopts structural adhesive or the upper plate 10 is made into wedge blocks according to the longitudinal and transverse gradients of the beam body 4 to adjust the flatness so as to eliminate the influence of the concrete unevenness or dimensional errors of the contact surface.

Further, the upper steel plate of the limiting device is as wide as the embedded steel plate of the original unidirectional movable support.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (6)

1. The unidirectional movable support for the concrete girder comprises a base for being connected with a pier and a unidirectional movable support arranged between the pier and a girder body, and is characterized by further comprising two limiting devices arranged at the bottom of the girder body, wherein first ends of the two limiting devices are detachably arranged on the girder body, second ends of the two limiting devices extend to the outer side of the base, and guide grooves for guiding the base to longitudinally move are formed in the two limiting devices in a transverse opposite arrangement mode;

the limiting device comprises an upper plate and a side plate vertically arranged on one side of the upper plate, and the upper plate is detachably arranged at the bottom of the beam body.

2. A unidirectional movable bracket for a concrete main beam as claimed in claim 1, wherein a plurality of anchor holes are formed in the upper plate in an array, and anchor bolts are respectively inserted into the anchor holes.

3. A unidirectional movable bracket for a concrete main beam as claimed in claim 1 or 2, further comprising a stiffening rib, wherein one end of the stiffening rib is fixedly connected with the upper plate, the other end of the stiffening rib is fixedly connected with the side panel, and the side panel is vertically arranged with the upper plate.

4. A unidirectional movable bracket for a concrete main beam as claimed in claim 3, wherein the end surface of the side panel facing the unidirectional movable support is slidably connected with a slide plate, and the slide plate is fixedly arranged on the unidirectional movable support.

5. A unidirectional movable bracket for a concrete main beam as claimed in claim 3, wherein edges of said stiffening rib, said upper plate and said side plate are chamfered.

6. The unidirectional movable bracket for a concrete main beam of claim 4, wherein the slide plate is made of tetrafluoroethylene.