Jacking and reinforcing device for bridge crossing expressway

Abstract

The utility model provides a jacking and reinforcing device for a bridge crossing an expressway. The expressway-crossing bridge jacking and reinforcing device comprises positioning structures, the upper position and the lower position of the designed cut-off position of a column-beam structure are each provided with two sets of positioning structures in the opposite direction, and each positioning structure comprises a bracket frame, a reinforcing plate, an expansion bolt and a through hole; the bracket frames are oppositely fixed to the upper position and the lower position of the cut-off position of the column-beam structural design through the expansion bolts, the through holes are formed in the side walls and the bottom faces of the bracket frames, and the reinforcing plates are fixed between the lower end planes and the upper end vertical faces of the bracket frames. And the reinforcing structures are mounted between the upper and lower adjacent groups of bracket frames. The jacking and reinforcing device for the bridge crossing the expressway has the advantages of being small in erecting range, easy and convenient to construct and dismantle and high in stability factor.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge lifting and reinforcement, in particular to a bridge lifting and reinforcement device across a highway. Background Art

[0002] With the rapid development of national construction, the bridges built in the past are gradually unable to meet the current traffic requirements. Therefore, the elevation of the old bridges needs to be raised. Some bridges are limited by construction space or on-site conditions and cannot be directly modified. Generally, the overall jacking method is adopted to solve the problem. The traditional method is to build a jacking platform under the bridge, place jacks on the jacking platform, jack up the box girder, and then raise the piers and abutments to complete the bridge elevation adjustment.

[0003] During the bridge jacking construction, after the bridge piers are divided and cut off, support reinforcement and protection are required to ensure the stability of the support and the protection of the jacking equipment. At present, steel pipes are mainly used to build scaffolding structures to achieve this. The disadvantage is that after the scaffolding structure is built, an overall support enclosure is formed, the support range is wide, and the integrity of the structural connection is high. After the erection, it is not convenient to carry out the pier connection construction work, the jack system maintenance and the follow-up support system construction work, and the scaffolding construction and dismantling operations are relatively cumbersome, the load-bearing structure is greatly affected by the construction quality factors, and the instability factors are relatively high.

[0004] Therefore, it is necessary to provide a new jacking reinforcement device for a bridge across a highway to solve the above technical problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a jacking and reinforcement device for a bridge across a highway, which has a small supporting range, simple erection and dismantling operations, and a high stability factor.

[0006] The utility model provides a jacking reinforcement device for a bridge across a highway, comprising: a positioning structure, wherein two groups of the positioning structures are respectively arranged opposite to each other at the upper and lower positions of a designed truncation of a column-beam structure, wherein the positioning structures comprise corbels, reinforcing plates, expansion bolts and through holes, wherein the corbels are fixed to the upper and lower positions of the designed truncation of the column-beam structure in a relative state through the expansion bolts, wherein the through holes are arranged on the side walls and the bottom surface of the corbels, and wherein the reinforcing plates are fixed between the lower end plane and the upper end vertical surface of the corbels; and a reinforcement structure, wherein the reinforcement structure is installed between two groups of corbels adjacent to each other in upper and lower directions.

[0007] Preferably, the reinforcement structure further includes a screw rod and a fixing nut, wherein the screw rod connects two adjacent upper and lower groups of the corbels in series through the through hole, and the fixing nut is threadedly connected to the side wall of the screw rod.

[0008] Preferably, four fixing nuts are threadedly connected to one screw rod, and the four fixing nuts are divided into two groups, an upper group and a lower group, and the two fixing nuts in each group are opposite to each other.

[0009] Preferably, the minimum diameter of the fixing nut is larger than the inner diameter of the through hole, and a group of two fixing nuts are clamped on two sides of the bottom surface of the corbel in a relative manner, and the screw is supported and fixed between the upper and lower groups of corbels through the fixing nuts.

[0010] Preferably, the column-beam structure further comprises an upper column-beam, a lower column-beam and a post-cast column-beam. The column-beam structure is divided into two parts, namely the upper column-beam and the lower column-beam after being cut. The post-cast column-beam is cast between the upper column-beam and the lower column-beam.

[0011] Preferably, a group of the positioning structures is composed of four corbels, and the four corbels are of the same shape and size, and the combined shape is cylindrical, and the side wall of one end of the corbel holding the column is arc-shaped.

[0012] Compared with the related art, the jacking reinforcement device for the highway bridge provided by the utility model has the following beneficial effects:

[0013] The utility model provides a jacking reinforcement device for a bridge across a highway. First, the column-beam structure is cut to be divided into two parts, an upper part and an lower part. Then, the positioning structure is centered on the dividing line, and two groups of the positioning structures are respectively installed and fixed oppositely. The arc surface of the positioning structure can adapt to the arc side wall of the column-beam structure, so that the arc surface of the positioning structure is completely attached to the side wall of the column-beam structure, so that the positioning structure can exert the maximum force, so that it forms a fulcrum on the column-beam structure, and then multiple groups of jacks are placed on the platform of the positioning structure to make the multiple groups of jacks They are connected together and operated synchronously to lift up the upper part of the column-beam structure, and then pad the middle gap with a pad for support, and then support the bridge through pillars to further support the bridge. Then the jack is removed and the post-cast column-beam is poured in the lifted space to fix the upper and lower parts together. Then the upper and lower groups of the positioning structures are fixed in series through the reinforcement structure to further enhance the stability of the column-beam structure and make it more stable to support the bridge. This device has the advantages of a small support range, simple construction and dismantling operations, and a high stability factor. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic structural diagram of a preferred embodiment of the jacking and reinforcing device for a bridge across a highway provided by the utility model;

[0015] Figure 2 for Figure 1The structural schematic diagram of the overall reinforcement structure shown;

[0016] Figure 3 for Figure 1 The structural schematic diagram of the three-dimensional display of the positioning structure shown;

[0017] Figure 4 for Figure 1 The structural schematic diagram of the overall front view section is shown.

[0018] Numbers in the figure: 1. bridge, 2. column-beam structure, 21. upper column-beam, 22. lower column-beam, 23. post-cast column-beam, 3. positioning structure, 31. corbel, 32. reinforcing plate, 33. expansion bolt, 34. through hole, 4. reinforcement structure, 41. screw, 42. fixing nut, 5. base plate. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0020] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 ,in Figure 1 A schematic structural diagram of a preferred embodiment of the jacking and reinforcing device for a bridge across a highway provided by the utility model; Figure 2 for Figure 1 The structural schematic diagram of the overall reinforcement structure shown; Figure 3 for Figure 1 The structural schematic diagram of the three-dimensional display of the positioning structure shown; Figure 4 for Figure 1 As shown in the structural schematic diagram of the overall front view section, the jacking reinforcement device for the bridge across the expressway includes: a positioning structure 3, two groups of the positioning structures 3 are respectively arranged opposite to each other at the upper and lower positions of the designed truncation of the column-beam structure 2, the positioning structure 3 includes a corbel 31, a reinforcement plate 32, an expansion bolt 33 and a through hole 34, the corbel 31 is relatively fixed to the upper and lower positions of the designed truncation of the column-beam structure 2 by the expansion bolt 33, the through hole 34 is arranged on the side wall and the bottom surface of the corbel 31, the reinforcement plate 32 is fixed between the lower end plane and the upper end vertical surface of the corbel 31; a reinforcement structure 4, the reinforcement structure 4 is installed between the two adjacent groups of corbels 31 above and below.

[0021] In the specific implementation process, Figure 1 , Figure 2 and Figure 4As shown, the reinforcement structure 4 also includes a screw rod 41 and a fixing nut 42, the screw rod 41 is connected in series to two adjacent upper and lower groups of the corbel frames 31 through the through hole 34, and the fixing nut 42 is threadedly connected to the side wall of the screw rod 41; four fixing nuts 42 are threadedly connected to one screw rod 41, and the four fixing nuts 42 are divided into two upper and lower groups, and the two fixing nuts 42 in each group are opposite to each other; the minimum diameter of the fixing nut 42 is larger than the inner diameter of the through hole 34, and a group of two fixing nuts 42 are clamped on two sides of the bottom surface of the corbel frame 31 in an opposite state, and the screw rod 41 is supported and fixed between the upper and lower groups of the corbel frames 31 by the fixing nut 42.

[0022] It is convenient to connect the upper and lower groups of the corbels 31 together through the screw rods 41, thereby strengthening the stability between the upper column beam 21 and the lower column beam 22, so that the supporting bridge 1 is more stable.

[0023] In the specific implementation process, Figure 1 and Figure 4 As shown, the column-beam structure 2 also includes an upper column beam 21, a lower column beam 22 and a post-cast column beam 23. The column-beam structure 2 is divided into two parts, the upper column beam 21 and the lower column beam 22 after being cut. The post-cast column beam 23 is cast between the upper column beam 21 and the lower column beam 22.

[0024] The post-cast column beam 23 is generally used to connect the jacking space between the upper column beam 21 and the lower column beam 22 by later pouring, so that the upper column beam 21 and the lower column beam 22 are connected into a whole.

[0025] In the specific implementation process, Figure 1 , Figure 3 and Figure 4 As shown, a group of the positioning structures 3 is composed of four corbels 31, and the four corbels 31 have the same shape and size, and the combined shape is cylindrical, and the side wall of one end of the corbel 31 embracing the column is arc-shaped.

[0026] This facilitates the corbel frame 31 to adapt to the curved side walls of the upper column beam 21 and the lower column beam 22, so that the corbel frame 31 can completely fit on the side walls of the upper column beam 21 and the lower column beam 22 through its curved surface, thereby enabling the corbel frame 31 to exert maximum force.

[0027] The working principle of the jacking reinforcement device for a bridge across a highway provided by the utility model is as follows:

[0028] When in use, first use ink lines to mark the positions to be cut on the back walls on both sides of the column beam, so that the column beam structure 2 is divided into an upper and lower part, and then the two groups of the corbels 31 are installed opposite to each other with the marked line as the center, so that each group of the corbels 31 is wrapped around the side walls of the upper column beam 21 and the lower column beam 22 by combining into a cylindrical shape, and then a plurality of the expansion bolts 33 are driven into the upper column beam 21 and the lower column beam 22 through the through holes 34 to fix the two groups of the corbels 31, and then a rope saw is used to cut according to the marked line to separate the upper column beam 21 and the lower column beam 22, and then multiple groups of jacks are placed between the two groups of the corbels 31, and all the placed jacks are connected together so that they can operate synchronously, so that multiple groups of jacks support the upper column beam 21 upwards, and then the upper column beam 21 and the lower column beam 22 are connected. The gap between the upper and lower columns 21 and 22 is filled with a pad so that the pad is supported between the upper column beam 21 and the lower column beam 22. When it is lifted to an appropriate height, the bridge 1 is supported by pillars, and then the jack is removed. The post-cast column beam 23 is cast in the space between the upper column beam 21 and the lower column beam 22, and the upper column beam 21 and the lower column beam 22 are fixedly connected together through the post-cast column beam 23. Then the screw rod 41 is connected in series through the through hole 34, and the position of the screw rod 41 is fixed by the fixing nut 42, and then the screw rod 41 is fixedly supported between the upper and lower groups of the corbel brackets 31, so that it strengthens the stability of the connection between the upper column beam 21 and the lower column beam 22, thereby strengthening the supporting strength of the beam and column. This device has the advantages of a small support range, simple construction and dismantling operations, and a high stability factor.

[0029] Compared with the related art, the jacking reinforcement device for the highway bridge provided by the utility model has the following beneficial effects:

[0030] The utility model provides a jacking reinforcement device for a bridge across a highway. First, the column-beam structure 2 is cut to be divided into two parts, an upper part and an lower part. Then, the positioning structure 3 is centered on the dividing line, and two groups of the positioning structures 3 are respectively installed and fixed opposite to each other. The arc surface of the positioning structure 3 can adapt to the arc side wall of the column-beam structure 2, so that the arc surface of the positioning structure 3 is completely in contact with the side wall of the column-beam structure 2, so that the positioning structure 3 can exert the maximum force, so that it forms a fulcrum on the column-beam structure 2, and then multiple groups of jacks are placed on the platform of the positioning structure 3 so that the multiple groups of jacks can be lifted and lifted. The tops are connected together and operated synchronously to lift up the upper part of the column-beam structure 2, and then the middle gap is padded with a pad for support, and then the bridge 1 is supported by pillars to further support the bridge 1, and then the jack is removed, and the post-cast column beam 23 is poured in the lifted space, the upper and lower parts are fixed together, and then the upper and lower groups of the positioning structures 3 are fixed in series through the reinforcement structure 4, so as to further enhance the stability of the column-beam structure 2 and make it support the bridge 1 more stably. This device has the advantages of small supporting range, simple construction and dismantling operations, and high stability factor.

[0031] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A jacking and reinforcement device for a bridge across a highway, characterized in that: include: Positioning structures (3), two groups of the positioning structures (3) are respectively arranged opposite to each other at the upper and lower positions of the designed truncation point of the column-beam structure (2), the positioning structures (3) comprising a corbel frame (31), a reinforcing plate (32), an expansion bolt (33) and a through hole (34), the corbel frames (31) are fixed to the upper and lower positions of the designed truncation point of the column-beam structure (2) in a relative state through the expansion bolts (33), the through hole (34) is arranged on the side wall and the bottom surface of the corbel frame (31), and the reinforcing plate (32) is fixed between the lower end plane and the upper end vertical surface of the corbel frame (31); A reinforcement structure (4), wherein the reinforcement structure (4) is installed between two groups of upper and lower adjacent corbel frames (31).

2. The jacking reinforcement device for a bridge across a highway according to claim 1 is characterized in that: The reinforcement structure (4) further comprises a screw rod (41) and a fixing nut (42); the screw rod (41) is connected in series to two adjacent upper and lower groups of the corbel frames (31) through the through hole (34); and the fixing nut (42) is threadedly connected to the side wall of the screw rod (41).

3. The jacking reinforcement device for a bridge across a highway according to claim 2 is characterized in that: Four fixing nuts (42) are threadedly connected to one screw rod (41), and the four fixing nuts (42) are divided into two groups, an upper group and a lower group, and the two fixing nuts (42) in each group are opposite to each other.

4. The jacking reinforcement device for a bridge across a highway according to claim 2 is characterized in that: The minimum diameter of the fixing nut (42) is larger than the inner diameter of the through hole (34), and a group of two fixing nuts (42) are clamped on two sides of the bottom surface of the corbel frame (31) in an opposing manner, and the screw rod (41) is supported and fixed between the upper and lower groups of corbel frames (31) through the fixing nuts (42).

5. The jacking reinforcement device for a bridge across a highway according to claim 1 is characterized in that: The column-beam structure (2) further comprises an upper column beam (21), a lower column beam (22) and a post-cast column beam (23); the column-beam structure (2) is divided into two parts, namely the upper column beam (21) and the lower column beam (22), after being cut; the post-cast column beam (23) is cast between the upper column beam (21) and the lower column beam (22).

6. The jacking reinforcement device for a bridge across a highway according to claim 1 is characterized in that: A group of the positioning structures (3) is composed of four corbels (31) in combination, and the four corbels (31) are of the same shape and size, and the combined shape is cylindrical, and the side wall of one end of the corbels (31) that embraces the column is arc-shaped.

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