CN219058435U - Overall jacking device for bridge slope adjustment - Google Patents

Abstract

The utility model relates to the technical field of bridges, in particular to a bridge slope-adjusting integral jacking device, which comprises: the steel corbel is arranged on the surface of the capping beam, and the jack for replacing the support is arranged on the surface of the steel corbel; the surface of the embracing column beam is provided with a limit hole; the bridge piers are provided with longitudinal limiting bailey beams; the beneficial effects are as follows: the jack of the utility model adopts the self-locking jack, can be automatically locked through the mechanical lock in time in the jack lifting process, avoids accidents such as hydraulic leakage or sealed oil leakage, has good safety, and the jack of the utility model adopts the spherical hinge type jack, when in lifting, the ball head of the jack top automatically adjusts the ball head of the cylinder along with the change of the gradient of the upper structure along with the change of the gradient, thereby ensuring the vertical stress of the jack, and solving the serious risk of jack failure caused by overlarge horizontal unbalanced load of the jack caused by the gradient change in the jack lifting process.

Description

Overall jacking device for bridge slope adjustment

technical field

The utility model relates to the technical field of bridges, in particular to an integral jacking device for bridge slope adjustment.

Background technique

With the rapid development of my country's transportation industry, the original bridges are difficult to meet the needs of the existing traffic volume. While the number of new bridges is increasing, the reconstruction and utilization of old bridges are becoming more and more important. Generally speaking, the effect of demolition and reconstruction of old bridges is the best, but they are often troubled by problems such as long construction period, great impact on original traffic, high cost, and serious environmental hazards. , especially the construction plan that minimizes the engineering cost and the impact on the environment is very important and urgent.

In recent years, the rapid development and improvement of jacking technology, especially controlled hydraulic synchronous jacking technology, has been widely used in bridges that need to lift beams due to aging bearings, insufficient passage space under bridges, or the connection between old and new bridges. This technology has the characteristics of simple principle, little impact on the original bridge structure, short construction period, and no need to demolish and rebuild the old bridge. At present, the commonly used construction method for bridge jacking is to provide power by using a hydraulic jack, and the follower jack assists in the jacking. This scheme has certain safety risks for bridges with large jacking heights and slope adjustment requirements. Some bridge jacking projects have already occurred. Safety issues, and due to the existence of slope adjustment, the technical means to limit the longitudinal slip of the beam body during the jacking process are insufficient.

Utility model content

The purpose of this utility model is to provide an integral jacking device for bridge slope adjustment, so as to solve the problems raised in the above-mentioned background technology.

In order to achieve the above purpose, the utility model provides the following technical solutions: The overall jacking device for bridge slope adjustment, including:

The cover beam, the surface of the cover beam is provided with a steel corbel, and the surface of the steel corbel is provided with a jack for replacing the support;

For pillar-holding beams, limited holes are opened on the surface of the pillar-holding beams;

The bridge piers are provided with longitudinal limit Bailey beams between the bridge piers.

Preferably, the jack for replacing the support includes a jack cylinder, the top of the jack cylinder is provided with a jack ball head, the jack for replacing the support is a self-locking ball hinge jack, and the top of the jack ball head is in contact with the small box girder.

Preferably, the bottom of the pier is provided with thickened concrete caps, and the bottom of the thickened concrete caps is provided with caps, and there are multiple sets of thickened concrete caps, and multiple sets of thickened concrete caps are fixed on the top of the caps .

Preferably, the bottom of the thickened concrete cap is fixed with concrete limit columns and steel pipe supports, and there are multiple sets of steel pipe supports, and the multiple sets of steel pipe supports are evenly arranged on the top of the thickened concrete cap.

Preferably, the top of the steel pipe support is provided with a jack for lifting, and the top of the jack for lifting is in contact with the vertical limit Bailey beam, and the vertical limit Bailey beam is moved up and down by the jack for lifting.

Preferably, the top of the column-holding beam is provided with a concrete-filled steel tube spacer.

Compared with the prior art, the beneficial effects of the utility model are:

The jacks of the present invention proposed in this utility model all adopt self-locking jacks, which can be locked automatically by mechanical locks in time during the lifting process of the jacks, avoiding accidents such as hydraulic leakage or seal oil leakage, and have good safety. All the jacks are ball-hinge jacks. When the jack is lifted, as the slope changes, the ball head on the top of the jack automatically adjusts the ball head on the top of the cylinder with the change of the slope of the upper structure to ensure the vertical force of the jack. During the process, due to the change of the slope, the jack is subjected to excessive horizontal eccentric loads, resulting in a major risk of jack failure. The limit system of the present invention is composed of different limit devices according to different jacking conditions, and the pier is located in the middle of the column-holding beam. And limit holes are left on both sides, steel structural columns are set in the middle limit holes, and concrete limit columns are poured in the limit holes on both sides; portal-type Bailey beam limit frames are set between abutments and joints; longitudinal Bailey beams are set between piers The connecting beam, which is hinged with the bridge pier, can adapt to the vertical changes caused by the different jacking heights of the bridge pier. The jacking is limited by the above various limiting devices, which can improve the stability and safety of the jacking bridge structure.

Description of drawings

Fig. 1 is a structural representation of the utility model;

Fig. 2 is a schematic view of the structure of the utility model;

Fig. 3 is a schematic diagram of the structure of the jack ball head of the present invention.

In the figure: small box girder 1, cover beam 2, jack for replacing support 3, steel corbel 4, bridge pier 5, column-holding beam 6, steel tube concrete limit frame 7, concrete limit column 8, longitudinal limit Bailey Beam 9, lifting jack 10, steel pipe support 11, platform thickened concrete 12, platform 13, jack oil cylinder 14, jack ball head 15.

Detailed ways

In order to clearly and completely describe the purpose, technical solution, and advantages of the utility model, the embodiments of the utility model will be further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the present invention, rather than all embodiments, and are only used to explain the embodiments of the present invention, and are not intended to limit the embodiments of the present invention. Those of ordinary skill in the art All other embodiments obtained under the premise of no creative work belong to the protection scope of the present utility model.

In the description of the present utility model, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", The orientation or positional relationship indicated by "bottom", "side", "vertical" and "horizontal" are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating Or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "a", "first", "second", "third", "fourth", "fifth" and "sixth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a flexible connection. Detachable connection, or integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

For purposes of simplicity and illustration, the principles of the embodiments are mainly described with reference to examples. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments. It will be apparent, however, to one of ordinary skill in the art that in practice the embodiments may not be limited to these specific details. In some instances, well-known methods and structures have not been described in detail to avoid unnecessarily obscuring the embodiments. In addition, all the embodiments can be used in combination with each other.

Please refer to Fig. 1 to Fig. 3, the utility model provides a kind of technical solution: bridge slope adjustment overall jacking device, comprises: cover beam 2, the surface of cover beam 2 is provided with steel corbel 4, the surface of steel corbel 4 is provided with There is a jack 3 for replacing the support, and the jack 3 for replacing the support includes a jack oil cylinder 14. The top of the jack oil cylinder 14 is provided with a jack ball head 15, and the jack 3 for replacing the support is a self-locking ball hinge jack, and the jack ball head 15 The top is in contact with the small box girder 1;

The column-holding beam 6, the surface of the column-holding beam 6 is provided with a limit hole, and the top of the column-holding beam 6 is provided with a steel pipe concrete limit frame 7; the bridge piers 5, and the bridge piers 5 are provided with a longitudinal limit Bailey beam 9, and the bridge piers 5 The bottom of the cap is provided with thickened concrete 12, and the bottom of the cap thickened concrete 12 is provided with caps 13, and the caps thickened concrete 12 has multiple sets, and multiple sets of caps thickened concrete 12 are fixed on the top of the cap 13 , the bottom of the cap thickened concrete 12 is fixed with a concrete limit column 8 and a steel pipe support 11, the steel pipe support 11 has multiple groups, and the multiple groups of steel pipe supports 11 are evenly arranged on the top of the cap thickened concrete 12, and the steel pipe support 11 The top is provided with a jack 10 for jacking, and the top of the jack 10 is in contact with the vertical limit Bailey beam 9, and the vertical limit Bailey beam 9 is moved up and down by the jack 10 for lifting.

Although the illustrative specific implementation of the application has been described above, so that those skilled in the art can understand the application, the application is not limited to the scope of the specific implementation. For those of ordinary skill in the art, as long as each As long as such changes are within the spirit and scope of the application defined and determined by the appended claims, all application creations utilizing the concepts of the application are included in the protection list.

Claims (6)

1. The overall jacking device for bridge slope adjustment, characterized in that: the overall jacking device for bridge slope adjustment includes: The cover beam (2), the surface of the cover beam (2) is provided with a steel corbel (4), and the surface of the steel corbel (4) is provided with a jack (3) for replacing the support; The post-holding beam (6), the surface of the post-holding beam (6) offers limited holes; The bridge piers (5) are provided with longitudinal limiting Bailey beams (9) between the bridge piers (5). 2. The overall jacking device for bridge slope adjustment according to claim 1, characterized in that: the jack (3) for replacing the support comprises a jack cylinder (14), and the top of the jack cylinder (14) is provided with a jack ball head (15), the replacement bearing jack (3) is a self-locking ball hinge jack, and the top of the jack ball head (15) contacts with the small box girder (1). 3. The overall jacking device for bridge slope adjustment according to claim 2, characterized in that: the bottom of the pier (5) is provided with a cap thickened concrete (12), and the bottom of the cap cap thickened concrete (12) Caps (13) are provided, and the caps thickened concrete (12) has multiple groups, and the multiple groups of caps thickened concrete (12) are fixed on the top of the caps (13). 4. The overall jacking device for bridge slope adjustment according to claim 3, characterized in that: the bottom of the cap thickened concrete (12) is fixed with a concrete limit column (8) and a steel pipe support (11), the steel pipe The supports (11) have multiple sets, and the multiple sets of steel pipe supports (11) are evenly arranged on the top of the thickened concrete (12) of the cap. 5. The overall jacking device for bridge slope adjustment according to claim 4, characterized in that: the top of the steel pipe support (11) is provided with a jack (10) for jacking, and the top of the jack (10) for jacking is connected to the top of the jack (10). Longitudinal limit Bailey beam (9) contacts, makes vertical limit Bailey beam (9) move up and down with jack (10) by jacking. 6. The overall jacking device for bridge slope adjustment according to claim 5, characterized in that: the top of the column-holding beam (6) is provided with a concrete-filled steel tube spacer (7).

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