CN217974083U

CN217974083U - Limiting device

Info

Publication number: CN217974083U
Application number: CN202222224329.9U
Authority: CN
Inventors: 秦自成; 史西锋; 曹少华; 洪明; 田太贵
Original assignee: China Tiesiju Civil Engineering Group Co Ltd CTCE Group; Fifth Engineering Co Ltd of CTCE Group
Current assignee: China Tiesiju Civil Engineering Group Co Ltd CTCE Group; Fifth Engineering Co Ltd of CTCE Group
Priority date: 2022-08-23
Filing date: 2022-08-23
Publication date: 2022-12-06
Anticipated expiration: 2032-08-23

Abstract

The utility model provides a stop device for when falling the steel box roof beam to the bent cap on vertical spacing to the steel box roof beam, including girder structure and spacing roof beam, the girder structure with the steel box roof beam is connected, and with spacing roof beam is connected, the girder structure with the steel box roof beam encloses to close and forms a three horn-shaped spaces, spacing roof beam is kept away from the one end of girder structure with the bent cap laminating, be provided with flexible pad on the spacing roof beam, flexible pad is located the bent cap with between the spacing roof beam. Through this application, can vertically be spacing to the steel box girder, improve the problem that the steel box girder removed toward the lower direction of height easily, reduce the vertical deviation of the roof beam in-process steel box girder that falls to reduce the degree of difficulty of intervention adjustment, in order to promote work efficiency.

Description

Limiting device

Technical Field

The utility model relates to a bridge construction technical field, in particular to stop device.

Background

The bridge is generally a structure which is erected on rivers, lakes and seas and allows vehicles, pedestrians and the like to smoothly pass through. In order to adapt to the modern high-speed developed traffic industry, bridges are also extended to be constructed to span mountain stream, unfavorable geology or meet other traffic needs, so that the buildings are convenient to pass.

The walking type pushing technology has numerous advantages in the construction process of urban bridges, particularly can effectively solve the problems of rigid construction and low safety factor in the construction process aiming at the traditional bridge construction process, and has strong construction integrity.

The existing walking type pushing technology is usually used for pushing a steel box girder to realize forward pushing and girder falling, namely, a jacking jack and a lifting pad box are installed at two ends of the steel box girder, the jacking jack jacks the steel box girder, and the lifting pad boxes at the two ends are alternately extracted to realize girder falling, and in the girder falling process, because the steel box girder has a longitudinal slope, the steel box girder is easy to move in a lower height direction, so that the deviation is too large, a large amount of time and energy are needed to be spent on intervention and adjustment, and the working efficiency is influenced.

SUMMERY OF THE UTILITY MODEL

Based on this, the utility model aims at providing a stop device to solve not enough among the above-mentioned prior art.

In order to achieve the purpose, the utility model provides a stop device for when falling the steel box roof beam to the bent cap on vertical spacing to the steel box roof beam, including girder structure and spacing roof beam, the girder structure with the steel box roof beam is connected, and with spacing roof beam is connected, the girder structure with the steel box roof beam encloses to close and forms a three horn-shaped spaces, spacing roof beam is kept away from the one end of girder structure with the bent cap laminating, be provided with flexible pad on the spacing roof beam, flexible pad is located the bent cap with between the spacing roof beam.

The beneficial effects of the utility model are that: through being connected girder structure and steel box girder, with spacing roof beam and bent cap laminating to utilize the flexbile cushion to protect the bent cap, so that when the steel box girder falls to the bent cap, can vertically spacing steel box girder, improve the problem that the steel box girder removed toward the lower direction of height easily, reduce the vertical deviation of the roof beam in-process steel box girder that falls, thereby reduce the degree of difficulty of intervention adjustment, in order to promote work efficiency.

Preferably, the main beam structure comprises a first main beam and a second main beam, wherein the first main beam is fixedly connected with the second main beam and forms an acute angle with the second main beam.

Preferably, the first main beam and the second main beam are fixedly connected with the steel box girder respectively.

Preferably, the first main beam is perpendicular to the limiting beam, the limiting beam and the steel box beam are respectively located at two ends of the first main beam, and the limiting beam is fixedly connected with the first main beam.

Preferably, the limiting beam and the first main beam are both made of HW300 section steel.

Preferably, the second main beam is made of 200 square tubes.

Preferably, an extension part is arranged on the flexible pad, and the extension part and the flexible pad are respectively connected with the side wall adjacent to the limiting beam.

Preferably, the extension is integrally formed with the flexible pad.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is a schematic structural view of a limiting device according to an embodiment of the present invention;

fig. 2 is a schematic view of a using state of the limiting device according to the embodiment of the present invention.

Description of the main element symbols:

steel box girder	10	First main beam	31
				Capping beam	20	Second main beam	32
Main beam structure	30	Flexible cushion	41
				Limiting beam	40

The following detailed description of the invention will be further described in conjunction with the above-identified drawings.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Several embodiments of the invention are presented in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Please refer to fig. 1, which is a limiting device according to an embodiment of the present invention, for longitudinally limiting a steel box girder 10 when the steel box girder 10 falls on a capping beam 20, including a main girder structure 30 and a limiting beam 40.

Wherein: the main beam structure 30 is connected with the steel box girder 10 and is connected with the limit beam 40, one end of the limit beam 40 far away from the main beam structure 30 is tightly attached to the cover beam 20, the main beam structure 30 and the steel box girder 10 enclose to form a triangular space, specifically, the main beam structure 30 comprises a first main beam 31 and a second main beam 32, one end of the first main beam 31 is welded with the second main beam 32, the other end of the first main beam is welded with the steel box girder 10 and is assembled with the second main beam 32 to form an acute angle, one end of the second main beam 32 is welded with the steel box girder 10, so that the side walls of the first main beam 31, the second main beam 32 and the steel box girder 10 form a triangular stable structure to obtain the triangular space.

It can be understood that when the steel box girder 10 falls to the bent cap 20, through welding stop device on the steel box girder 10 to longitudinally limit the steel box girder 10, improve the problem that the steel box girder 10 easily moves to the lower direction of elevation, and then reduce the longitudinal deviation of the steel box girder 10 in the girder falling process, reduce the difficulty of intervention and adjustment, and promote work efficiency.

It should be noted that, in the construction process of the bridge, the steel box girder 10 needs to be adjusted to the design position in advance before the girder falls, the limiting device is welded to the steel box girder 10, and the longitudinal displacement of the steel box girder 10 in the girder falling process is controlled by the limiting device, so that it can be understood that the number of the limiting devices which are actually required to be used is determined according to actual requirements.

For example, in a project (three-standard section) (1 x 60) m of a new expressway system engineering (first-stage) in the jiujiang river, the steel-concrete combined steel box girder 10 is pushed, the longitudinal gradient is-1.7%, the height difference of large and small mileage is 1.42m, the gradient is large, in the girder falling process, the large and small mileage is required to fall alternately, the steel box girder 10 is easy to move in the longitudinal direction, and in order to prevent the steel box girder 10 from moving to the large mileage end JS05 of the steel box girder, as shown in fig. 2, three groups of limiting devices are welded at the small mileage end (higher elevation end) of the steel box girder 10JS 05. It should be noted that the longitudinal displacement value of the steel box girder 10 after the position limiting device is used to the JS05 big mileage end is only 10mm, so that a good effect is achieved. Wherein, the comparison table of the using effect of the limiting device in the new expressway in Jiujiang and the Xinning Yinghua bridge is listed as follows:

examples of the invention	Theoretical value of displacement	Actual value of displacement	Whether or not to adopt a limiting device	Difficulty of deviation rectification
					New fast road for Jiujiang river	50-100mm	10mm	Is that	Is smaller
Bridge Yinghua Nanning	50-100mm	95mm	Whether or not	Is larger than

In this embodiment, the limiting beam 40, the first main beam 31 and the second main beam 32 are sequentially arranged from bottom to top, the first main beam 31 and the limiting beam 40 are perpendicular to each other, the first main beam 31 and the limiting beam 40 are welded to be fixed, the limiting beam 40 and the steel box girder 10 are respectively located at two ends of the first main beam 31, it should be noted that, in order to meet the stress requirement of the steel box girder 10 falling to the capping beam 20 in the beam falling process, the limiting beam 40 and the first main beam 31 are both made of HW300 steel, and the second main beam 32 is made of 200 square tubes.

In this embodiment, the flexible pad 41 is provided with an extension portion, the extension portion and the flexible pad 41 are made of the same material and are integrally formed with the flexible pad 41, the extension portion and the flexible pad 41 are respectively connected with the side walls adjacent to the limit beam 40, it should be noted that the side walls of the flexible pad 41 are respectively provided with an extension portion, and the side walls of the limit beam 40 are covered by the extension portions, so as to avoid the problem that the cover beam 20 is squeezed by the limit beam 40 in the beam falling process, thereby causing damage.

When concrete implementation, through being connected girder structure 30 and steel box girder 10, closely laminate spacing beam 40 and bent cap 20 to utilize flexible pad 41 to protect bent cap 20, so that when steel box girder 10 fell to bent cap 20, can vertically spacing steel box girder 10, improve the easy problem of removing toward the lower direction of elevation of steel box girder 10, reduce the vertical deviation of the in-process steel box girder 10 that falls, thereby reduce the degree of difficulty of intervention adjustment, in order to promote the work efficiency.

It should be noted that the above implementation process is only for illustrating the applicability of the present application, but this does not mean that the limiting device of the present application has only the above-mentioned one implementation flow, and on the contrary, the limiting device of the present application can be incorporated into the feasible embodiments of the present application as long as the limiting device of the present application can be implemented.

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 invention. In this specification, the schematic representations of the terms used above do not necessarily 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.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a stop device for when falling the steel box girder to the bent cap on to the steel box girder vertically spacing, its characterized in that, including girder structure and spacing roof beam, the girder structure with the steel box girder is connected, and with spacing roof beam is connected, the girder structure with the steel box girder encloses to close and forms a three horn-shaped spaces, spacing roof beam is kept away from the one end of girder structure with the bent cap laminating, be provided with the flexible pad on the spacing roof beam, the flexible pad is located the bent cap with between the spacing roof beam.

2. The restraint device of claim 1, wherein said main beam structure includes a first main beam and a second main beam, said first main beam being fixedly attached to said second main beam and forming an acute angle with said second main beam upon assembly.

3. The stop device according to claim 2, wherein the first main beam and the second main beam are each fixedly connected to the steel box girder.

4. The limiting device according to claim 2, wherein the first main beam and the limiting beam are perpendicular to each other, the limiting beam and the steel box beam are respectively located at two ends of the first main beam, and the limiting beam is fixedly connected with the first main beam.

5. The restraint device of claim 2 wherein said restraint beam and said first main beam are both made of HW300 steel.

6. The restraint device of claim 2, wherein said second main beam is formed from 200 square tubes.

7. The restraint device of claim 1 wherein extensions are provided on the flexible pads, the extensions and the flexible pads being connected to the side walls adjacent to the restraint beam, respectively.

8. A spacing device according to claim 7 wherein said extension is integrally formed with said flexible pad.