CN216919979U

CN216919979U - Cast-in-place box girder side direction stop device

Info

Publication number: CN216919979U
Application number: CN202220549824.4U
Authority: CN
Inventors: 刘瑞定; 谈晓阳; 刘�东; 沙超; 冯杰
Original assignee: Jiangsu Runyang Transportation Engineering Group Co ltd
Current assignee: Jiangsu Runyang Transportation Engineering Group Co ltd
Priority date: 2022-03-14
Filing date: 2022-03-14
Publication date: 2022-07-08
Anticipated expiration: 2032-03-14

Abstract

The utility model belongs to the technical field of bridge construction, and provides a cast-in-place box girder lateral limiting device. The cast-in-place box girder comprises a first base plate, wherein the first base plate is embedded at the bottom of the cast-in-place box girder; the second base plate is arranged right below the first base plate and is connected with the first base plate; the upper end of the supporting piece is welded with the bottom surface of the second backing plate. The utility model can effectively prevent the cast-in-place box girder from sliding off laterally, and has simple structure, convenient installation and safer, more reliable and faster construction process.

Description

Cast-in-place box girder side direction stop device

Technical Field

The utility model relates to the technical field of bridge construction, in particular to a cast-in-place box girder lateral limiting device.

Background

Bridges, which are an important component of road traffic, are widely distributed in various regions and are structures through which vehicles and pedestrians pass. The bridge is used as one of the bridge in various forms, and has wide application range. In a general sense, a girder bridge generally refers to a structure for erecting a girder on a pier.

Along with the demand of social development, various box girder bridges in cities are under vigorous construction, and in the construction process of large-scale bridges, in order to prevent the box girders from turning on one's side caused by vehicles, lateral limiting devices need to be built for prevention, but the limiting devices in the prior art are complex in structure and inconvenient to install.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a lateral limiting device for a cast-in-place box girder, which solves the technical problems of complex structure and inconvenient installation of the limiting device in the prior art.

The utility model provides a lateral limiting device for a cast-in-place box girder, which comprises:

casting a box girder in situ;

the first base plate is embedded at the bottom of the cast-in-place box girder;

the second base plate is arranged below the first base plate;

and the upper end of the supporting piece is welded with the bottom surface of the second base plate.

According to the utility model, the bottom of the box girder is embedded with the first base plate, so that the position of the first base plate is confirmed before pouring, after the box girder is poured and shaped, the second base plate is connected with the first base plate, and the supporting piece connected with the bottom surface of the second base plate can be used as a supporting stop block for preventing the box girder from sliding off. In order to prevent the support member from influencing the normal shock absorption of the cast-in-place box girder, a gap is formed between the bottom surface of the support member and the pier, and the specific size of the gap is determined according to the positions of the cast-in-place box girder and the pier.

Further: the supporting piece is H-shaped steel.

The beneficial effects of the step are as follows: the H-shaped steel is used as a standard part, is easy to obtain, has moderate price and good structural strength, and can meet the supporting requirement.

Further: the bottom surface of the first base plate is provided with a plurality of assembling parts, each assembling part comprises a bolt and a sleeve, the bolt penetrates through the second base plate, and the sleeve is positioned below the second base plate;

the combined parts are uniformly distributed on two sides of the web plate of the H-shaped steel.

The beneficial effects of the step are as follows: the first base plate and the second base plate are connected through the bolts and the sleeves, so that the convenience and the rapidness are realized, and the distance between the first base plate and the second base plate can be adjusted by adjusting the upper position and the lower position of the sleeves; the bolt equipartition can make things convenient for the welding position of quick location H shaped steel in the both sides of H shaped steel web.

Further: the outer circular surface of the sleeve is provided with a vertical limiting sheet which is rectangular or trapezoidal;

the limiting pieces are at least four, and the limiting pieces are symmetrically arranged on the outer circular surface of the sleeve along the axis of the sleeve.

The beneficial effects of the step are as follows: be equipped with spacing piece at telescopic excircle, can fix telescopic position through fixed spacing piece, spacing piece can also provide for the sleeve moreover and pull the wrong position, makes things convenient for the operation sleeve to reciprocate.

Further: the bottom surface of second backing plate still is provided with many vertical first anchor reinforcing bars and second anchor reinforcing bar, many first anchor reinforcing bar is with a plurality of spacing piece one-to-one, just the outer fringe of first anchor reinforcing bar with the side of spacing piece is tangent, many second anchor reinforcing bar equipartition is in the H shaped steel web with between the sleeve.

The beneficial effects of the step are as follows: when the head end welding of first anchor reinforcing bar was in the bottom surface of second backing plate, and the excircle of first anchor reinforcing bar was tangent and when welding with spacing piece, the sleeve was fixed by first anchor reinforcing bar, can not reciprocate again, can avoid vibrations to the influence of sleeve position. The second anchoring bar further defines the position of the H-section.

Further: and a rubber damping plate is arranged on the outer side surface of the flange plate of the H-shaped steel.

The beneficial effects of the step are as follows: the rubber shock-absorbing plate can absorb the impact force between the H-shaped steel and the pier top cushion stone, and mutual damage is avoided.

The utility model has the beneficial effects that:

1. compared with a complex limiting structure in the prior art, the main body of the utility model only comprises the first base plate, the second base plate and the supporting piece, the first base plate is positioned in the cast-in-place box girder, and then the second base plate, the supporting piece and the first base plate are installed, so that the lateral limiting device can be obtained.

2. Besides, the distance between the first base plate and the second base plate can be finely adjusted by the sleeve, so that the distance between the lower end of the supporting piece and the pier is more appropriate.

Drawings

In order to more clearly illustrate the detailed description of the utility model or the technical solutions in the prior art, the drawings that are needed in the detailed description of the utility model or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a schematic structural view of a cast-in-place box girder lateral limiting device provided by the utility model;

FIG. 2 is a bottom view of FIG. 1;

FIG. 3 is a cross-sectional view of the sleeve of the present invention;

fig. 4 is a schematic diagram of the application of the present invention.

Reference numerals:

1-a first backing plate; 2-a second backing plate; 3-a support; 4-a bolt; 5-a sleeve; 6-a first anchoring bar; 7-a second anchoring bar; 8-casting a box girder in situ; 9-bridge pier;

31-rubber damper plates; 51-a limiting piece; 91-pier top pad stone.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the utility model pertains.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The embodiment is as follows:

as shown in fig. 1 and 4, the present invention provides a cast-in-place box girder lateral limiting device, which comprises:

a cast-in-place box girder 8; the first base plate 1 is embedded at the bottom of the cast-in-place box girder 8; the second base plate 2 is arranged below the first base plate 1; and the upper end of the support part 3 is welded with the bottom surface of the second base plate 2.

The bottom of a cast-in-place box beam 8 is embedded in a first base plate 1, so that the position of the first base plate 1 in the cast-in-place box beam 8 is positioned before casting, after the cast-in-place box beam 8 is cast and shaped, a second base plate 2 is connected with the first base plate 1, and the first base plate 1 and the second base plate 2 can be connected in various connection modes such as welding, riveting or threaded connection; the supporting piece 3 connected with the bottom surface of the second cushion plate 2 can be used as a supporting stop block for preventing the cast-in-place box girder 8 from sliding off. In order to prevent the support member 3 from influencing the normal shock absorption of the cast-in-place box girder 8, a gap is formed between the bottom surface of the support member 3 and the pier 9, and the specific gap is determined according to the positions of the cast-in-place box girder 8 and the pier 9, such as: the distance between the support member 3 and the pier 9 is too short, and the lower end of the support member 3 is contacted with the pier 9 due to the movement of the cast-in-situ box girder 8 within the vibration range allowed by the design, so that the force unloading of the cast-in-situ box girder 8 is not facilitated; the distance between the support member 3 and the pier 9 is too far, and the device is difficult to play a role in case the cast-in-place box girder 8 slides laterally.

As shown in fig. 1 and 2, further: the support 3 is H-shaped steel. The H-shaped steel is used as a standard part, is easy to obtain, has moderate price and good structural strength, and can meet the supporting requirement.

As shown in fig. 1 and 2, the bottom surface of the first pad 1 is provided with a plurality of assemblies, each assembly comprises a bolt 4 and a sleeve 5, the bolt 4 penetrates through the second pad 2, and the sleeve 5 is located below the second pad 2;

Connect first backing plate 1 and second backing plate 2 through bolt 4 and sleeve 5, convenient and fast can also be through the upper and lower position of adjusting sleeve 5, and then adjust the distance between first backing plate 1 and the second backing plate 2. The bolts 4 are uniformly distributed on two sides of the web plate of the H-shaped steel, so that the welding position of the H-shaped steel can be conveniently and quickly positioned.

As shown in fig. 3, a vertical limiting piece 51 is arranged on the outer circumferential surface of the sleeve 5, and the limiting piece 51 is rectangular or trapezoidal;

the number of the limiting pieces 51 is at least four, and the limiting pieces 51 are symmetrically arranged on the outer circular surface of the sleeve 5 along the axis of the sleeve.

The outer circular surface of the sleeve 5 is provided with the limiting piece 51, the position of the sleeve 5 can be fixed by fixing the limiting piece 51, and the limiting piece 51 can also provide a twisting position for the sleeve 5, so that the sleeve 5 can be conveniently operated to move up and down.

As shown in fig. 1 and 2, the bottom surface of the second base plate 2 is further provided with a plurality of vertical first anchoring steel bars 6 and second anchoring steel bars 7, the plurality of first anchoring steel bars 6 are in one-to-one correspondence with the limiting pieces 51, the outer edges of the first anchoring steel bars 6 are tangent to the side surfaces of the limiting pieces 51, and the plurality of second anchoring steel bars 7 are uniformly distributed between the H-shaped steel web and the sleeves 5.

When the head end welding of first anchor reinforcing bar 6 was in the bottom surface of second backing plate 2, and the excircle of first anchor reinforcing bar 6 was tangent and when welding with spacing piece 51, sleeve 5 was fixed by first anchor reinforcing bar 6, can not reciprocate again, can avoid vibrations to the influence of sleeve 5 position. The second anchoring bar 7 further defines the position of the H-section.

As shown in fig. 4, a rubber damper plate 31 is provided on the outer surface of the flange plate of the H-beam. The rubber damper plate 31 can absorb the impact force between the H-beam 3 and the pier apex stones 91, avoiding mutual damage.

In the description of the present invention, numerous specific details are set forth. It is understood, however, that embodiments of the utility model may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being covered by the appended claims and their equivalents.

Claims

1. The utility model provides a cast-in-place box girder side direction stop device which characterized in that includes:

casting a box girder in situ;

the first base plate is embedded at the bottom of the cast-in-place box girder;

the second base plate is arranged below the first base plate;

2. The cast-in-place box girder lateral limiting device according to claim 1, wherein the supporting member is an H-shaped steel.

3. The cast-in-place box girder lateral limiting device according to claim 2, wherein a plurality of assembling units are arranged on the bottom surface of the first base plate, each assembling unit comprises a bolt and a sleeve, the bolt penetrates through the second base plate, and the sleeve is positioned below the second base plate;

4. The cast-in-place box beam lateral limiting device according to claim 3, wherein a vertical limiting piece is arranged on the outer circumferential surface of the sleeve, and the limiting piece is rectangular or trapezoidal;

5. The cast-in-place box girder lateral limiting device according to claim 4, wherein a plurality of vertical first anchoring steel bars and a plurality of vertical second anchoring steel bars are further arranged on the bottom surface of the second base plate, the first anchoring steel bars correspond to the limiting pieces one to one, the outer edges of the first anchoring steel bars are tangent to the side surfaces of the limiting pieces, and the second anchoring steel bars are uniformly distributed between the H-shaped steel web plate and the sleeve.

6. The cast-in-place box girder lateral limiting device of claim 2, wherein a rubber damping plate is arranged on the outer side surface of the flange plate of the H-shaped steel.