Swivel bridge pier slide way device and high-position installation method thereof

Abstract

The invention discloses a swivel pier slideway device and a high-position installation method thereof, and belongs to the technical field of bridge swivel systems.The swivel pier slideway device comprises a bearing platform upper structural reinforcing steel bar and a bearing platform lower structural reinforcing steel bar which are arranged up and down, and the bearing platform upper structural reinforcing steel bar and the bearing platform lower structural reinforcing steel bar are provided with a plurality of supporting units forming a circular ring in a surrounding mode; each supporting unit comprises a slide way steel plate, a slide way additional plate is arranged below the slide way steel plate, a slide way framework is arranged below the slide way additional plate, the upper end of the slide way framework is connected with the slide way steel plate through an adjusting bolt and a nut, and cross arm steel bars are connected below the slide way framework. A vertical first supporting steel bar and a vertical second supporting steel bar are installed on the diagonal brace, and adjusting nuts are installed on the first supporting steel bar and the second supporting steel bar in a threaded mode. According to the method, the lower bearing platform and the sliding way can be installed through one-time concrete pouring, the method is simple in process, the integrity of the lower bearing platform of the swivel pier can be improved, and the construction quality of the swivel bearing platform and a swivel system is guaranteed.

Description

Technical Field

[0001] The invention relates to a rotating bridge pier slideway device and a high-position installation method thereof, belonging to the technical field of bridge rotating systems. Background Art

[0002] In the prior art, the bridge of the China Railway Line crosses the MTR by rotating. The conventional installation method of the rotating slideway requires that the concrete of the pedestal under the rotating pier be poured twice. After the first pouring of concrete is completed, the slideway is installed on its top surface, welded and fixed to the pedestal steel bar, and then the second pouring of concrete is carried out. Due to the two pourings of concrete, the method process is relatively cumbersome, and it will also reduce the integrity of the pedestal under the rotating pier, affecting the construction quality of the rotating pedestal and the rotating system. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a swivel bridge pier slideway device, which can complete the installation of the lower pedestal and the slideway by one-time concrete pouring. The method and process are simple, and can improve the integrity of the swivel pier lower pedestal and ensure the construction quality of the swivel pedestal and the swivel system.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] The cam is annularly fixed to the upper and lower parts of the support frame, and the cam is provided with a plurality of support units arranged in a circular shape. The support unit comprises a slideway steel plate, a slideway additional plate is arranged below the slideway steel plate, the slideway additional plate is arranged above the upper and lower part of the support frame, a slideway frame is arranged below the slideway additional plate, the slideway frame is located below the upper and lower part of the support frame, the upper end of the slideway frame is connected to the slideway steel plate through adjusting bolts and nuts, a cross arm steel bar is connected below the slideway frame, and an inclined tie bar is connected to the lower and upper part of the support frame, a first vertical supporting steel bar and a second supporting steel bar are installed on the inclined tie bar, and adjusting nuts are threadedly installed on the first and second supporting steel bars, the first supporting steel bar is located in the supporting unit, and the adjusting nut at the upper part thereof contacts with the lower part of the slideway additional plate, and the second supporting steel bar is located at both ends of a single supporting unit.

[0006] The oblique tie bar is fixed to the first supporting steel bar and the second supporting steel bar by a first U-shaped bolt.

[0007] The tensioning bar is fixed to the steel bars of the lower structure of the pedestal by a second U-shaped bolt.

[0008] The number of the support units is six to ten.

[0009] The slideway frame and the cross arm steel bars are connected by welding.

[0010] The number of the first supporting steel bars in a single supporting unit is two.

[0011] The number of the second supporting steel bars at both ends of a single supporting unit is four.

[0012] In a second aspect, the present invention provides a high-position installation method for a rotating bridge pier slideway device, comprising the following steps:

[0013] After the cap cushion layer under the rotating pier is completed, install the steel bars of the cap lower structure;

[0014] The first supporting steel bar and the second supporting steel bar are vertically implanted in the steel bars of the lower structure of the pedestal, and the inclined tie bars are used to connect and reinforce the steel bars of the lower structure of the pedestal, wherein the first supporting steel bar and the second supporting steel bar are arranged in a circle according to the projection of the inner and outer edges of the slideway, and the inner and outer circles are concentric and have the same height;

[0015] The upper ends of the first supporting steel bar and the second supporting steel bar are threaded and installed with adjusting nuts to serve as temporary support and preliminary adjustment devices for the slideway steel plate;

[0016] Carry out the slideway steel plate lifting in blocks, splicing into rings, radial adjustment and slideway frame welding in sequence;

[0017] Install the steel bars of the upper structure of the pedestal, and then make secondary fine adjustments to the slideway steel plate by adjusting the bolts and nuts.

[0018] Beneficial effects of the present invention: The present invention provides a swivel bridge pier slideway device and a high-position installation method thereof, wherein the lower structural steel bars of the pedestal are connected with oblique tie bars, and the vertical first supporting steel bars and the second supporting steel bars are installed on the oblique tie bars, and the first supporting steel bars and the second supporting steel bars are threadedly installed with adjusting nuts, the first supporting steel bars are located in the supporting unit, and the adjusting nuts on the upper part thereof are in contact with the bottom of the slideway additional plate, and the second supporting steel bars are located at both ends of a single supporting unit. The slideway is supported by the supporting steel bars, and the slideway system can be installed and adjusted before the concrete pouring of the swivel lower pedestal, which perfectly avoids the conventional practice that the lower pedestal must be poured twice, and the integrity of the swivel pier lower pedestal is increased. Improve the construction quality of the swivel pedestal and the swivel system;

[0019] In addition, the upper end of the slide frame is connected to the slide steel plate through adjusting bolts and nuts, and the first supporting steel bar and the second supporting steel bar are threaded with adjusting nuts. The slide is adjusted in two ways, and the accuracy is easy to control and the stability is reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of a rotating bridge pier slideway device of the present invention;

[0021] Figure 2 for Figure 1 A schematic cross-sectional structure diagram of the AA position;

[0022] The reference numerals in the figure are as follows: 1-slideway steel plate; 2-slideway additional plate; 3-slideway upper structural steel bars; 4-slideway frame; 5-adjusting bolts; 6-adjusting nuts; 7-slideway anchor bars; 8-first supporting steel bars; 9-adjusting nuts; 10-cross arm steel bars; 11-diagonal tension bars; 12-first U-shaped bolts; 13-second U-shaped bolts; 14-slideway lower structural steel bars; 15-second supporting steel bars. DETAILED DESCRIPTION

[0023] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and are not intended to limit the protection scope of the present invention.

[0024] Example 1

[0025] like Figure 1 and Figure 2 As shown, the present invention discloses a rotating bridge pier slideway device, including a cap upper structure steel bar 3 and a cap lower structure steel bar 14 arranged up and down, and a plurality of support units arranged in a circular ring shape on the cap upper structure steel bar 3 and the cap lower structure steel bar 13. The number of the support units is six to ten, and the number can be determined according to the weight of the upper structure bridge and the transportation conditions. Generally, they are preferably arranged in pairs, and preferably eight in this embodiment.

[0026] The support unit includes a slideway steel plate 1, a slideway additional plate 2 is arranged below the slideway steel plate 1, the slideway additional plate 2 is arranged above the upper structural steel bars 3 of the pedestal, a slideway frame 4 is arranged below the slideway additional plate 2, the slideway frame 4 is located below the upper structural steel bars 3 of the pedestal, and the upper end of the slideway frame 4 is connected to the slideway steel plate 1 through adjusting bolts 5 and nuts 6, so that the height of the slideway steel plate 1 can be adjusted. A cross arm steel bar 10 is connected below the slideway frame 4, and the slideway frame 4 and the cross arm steel bar 10 are connected by welding. The inclined tie bar 11 is connected to the lower structural steel bar 14 of the pedestal, and the tie bar 11 is fixed to the lower structural steel bar 14 of the pedestal by a second U-bolt 13. The inclined tie bar 11 is installed with a vertical first supporting steel bar 8 and a second supporting steel bar 15, and the inclined tie bar 11 is fixed to the first supporting steel bar 8 and the second supporting steel bar 15 by a first U-bolt 12.

[0027] The first support steel bar 8 and the second support steel bar 15 are threaded with adjustment nuts 9, and the height of the support steel bars can be adjusted. The first support steel bar 8 is located in the support unit and the adjustment nut 9 on the upper part of the first support steel bar 8 contacts the bottom of the slideway attachment plate 2. The second support steel bar 15 is located at both ends of a single support unit, and the height of the slideway can be adjusted.

[0028] Specifically, the number of first supporting steel bars 8 in a single supporting unit is two. The number of second supporting steel bars 15 at both ends of a single supporting unit is four, arranged in a circle according to the projection of the inner and outer edges of the slideway, with the inner and outer circles being concentric and having the same height.

[0029] The present invention supports the slideway by setting supporting steel bars, which can realize the installation and adjustment of the slideway system before pouring concrete of the lower pedestal of the swivel, perfectly avoiding the conventional practice that the lower pedestal must be poured twice, and the integrity of the pedestal under the swivel pier is increased. The construction quality of the swivel pedestal and the swivel system is improved; in addition, the upper end of the slideway frame is connected to the slideway steel plate by adjusting bolts and nuts, and the first supporting steel bar and the second supporting steel bar are threaded with adjusting nuts, so the slideway can be adjusted in two ways, and the accuracy is easy to control and the stability is reliable.

[0030] Example 2

[0031] This embodiment discloses a high-position installation method of a rotating bridge pier slideway device based on the embodiment 1, comprising the following steps:

[0032] Step 1: After the foundation cushion of the swivel pier is completed, the reinforcement bars 14 of the lower structure of the foundation are installed.

[0033] Step 2: vertically implant the first support steel bar 8 and the second support steel bar 15 in the steel bar 14 of the lower structure of the pedestal, fix the inclined tie bar 11 and the first support steel bar 8 and the second support steel bar 15 by the first U-shaped bolt 12, and connect and reinforce the inclined tie bar 11 and the steel bar 14 of the lower structure of the pedestal, and fix the tie bar 11 and the steel bar 14 of the lower structure of the pedestal by the second U-shaped bolt 13. The first support steel bar 8 and the second support steel bar 15 are arranged in a circle according to the projection of the inner and outer edges of the slideway, and the inner and outer circles are concentric and have the same height.

[0034] Step three, the upper ends of the first supporting steel bars 8 and the second supporting steel bars 15 are threaded and installed with adjusting nuts 9 to serve as temporary support and preliminary adjustment devices for the slideway steel plate 1 .

[0035] Step 4: sequentially carry out the lifting of the slideway steel plate 1 in blocks, splicing the blocks into a ring, radial adjustment and welding of the slideway frame 4.

[0036] Step 5: Install the upper structural steel bars 3 on the pedestal, and then perform secondary fine-tuning of the slideway steel plate 1 by adjusting the bolts 5 and nuts 6.

[0037] The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A rotating bridge pier slideway device, characterized in that: The invention comprises a cap upper structure steel bar (3) and a cap lower structure steel bar (14) arranged above and below, wherein a plurality of support units arranged on the cap upper structure steel bar (3) and the cap lower structure steel bar (13) are surrounded in a circular ring shape, wherein the support unit comprises a slideway steel plate (1), wherein a slideway additional plate (2) is arranged below the slideway steel plate (1), wherein the slideway additional plate (2) is arranged above the cap upper structure steel bar (3), wherein a slideway frame (4) is arranged below the slideway additional plate (2), wherein the slideway frame (4) is located below the cap upper structure steel bar (3), and the upper end of the slideway frame (4) is fixed by an adjusting bolt (5). and nuts (6) connected to the slideway steel plate (1); a crossbar (10) is connected to the bottom of the slideway frame (4); an inclined tie bar (11) is connected to the steel bars (14) of the lower structure of the pedestal; a vertical first support steel bar (8) and a second support steel bar (15) are installed on the inclined tie bar (11); an adjusting nut (9) is threadedly installed on the first support steel bar (8) and the second support steel bar (15); the first support steel bar (8) and the second support steel bar (15) are located in the support unit and the adjusting nut (9) at the top thereof is in contact with the bottom of the slideway additional plate (2); the second support steel bar (15) is located at both ends of the single support unit.

2. The rotating bridge pier slideway device according to claim 1, characterized in that: The oblique tie bar (11) is fixed to the first supporting steel bar (8) and the second supporting steel bar (15) via a first U-shaped bolt (12).

3. The rotating bridge pier slideway device according to claim 1, characterized in that: The tie bars (11) are fixed to the base lower structure steel bars (14) via second U-shaped bolts (13).

4. The rotating bridge pier slideway device according to claim 1, characterized in that: The number of the support units is six to ten.

5. The rotating bridge pier slideway device according to claim 1, characterized in that: The slideway frame (4) and the cross arm steel bars (10) are connected by welding.

6. The rotating bridge pier slideway device according to claim 1, characterized in that: The number of the first supporting steel bars (8) in a single supporting unit is two.

7. The rotating bridge pier slideway device according to claim 1, characterized in that: The number of the second supporting steel bars (15) at both ends of a single supporting unit is four.

8. A high-position installation method for a rotating bridge pier slideway device according to any one of claims 1 to 7, characterized in that: The following steps are involved: After the cap cushion layer under the rotating pier is completed, the cap lower structure steel bars (14) are installed; A first supporting steel bar (8) and a second supporting steel bar (15) are vertically implanted in the steel bars (14) of the lower structure of the pedestal, and the inclined tie bars (11) are connected and reinforced with the steel bars (14) of the lower structure of the pedestal, wherein the first supporting steel bar (8) and the second supporting steel bar (15) are arranged in a circle according to the projection of the inner and outer edges of the slideway, and the inner and outer circles are concentric and have the same height; The upper ends of the first supporting steel bar (8) and the second supporting steel bar (15) are subjected to thread rolling and are installed with adjusting nuts (9) to serve as temporary support and preliminary adjustment devices for the slideway steel plate (1); The slideway steel plates (1) are hoisted in blocks, piece-by-piece spliced ​​into a ring, radially adjusted, and the slideway frame (4) is welded in sequence; The upper structural steel bars (3) of the cap are installed, and the slideway steel plate (1) is finely adjusted for a second time by adjusting the bolts (5) and nuts (6).

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