Steel trestle for river-crossing bridge and construction method thereof

Abstract

The present invention discloses a steel trestle for a river-spanning bridge and a construction method thereof, comprising a steel trestle main body and supporting bridge columns, wherein guide auxiliary plates are fixedly arranged at the bottoms of both ends of the steel trestle main body, and an auxiliary inclined groove is arranged on one side of the guide auxiliary plate; the present invention improves and optimizes the steel trestle for a river-spanning bridge and the construction thereof, namely, through the coordinated use of the provided guide auxiliary plates, the auxiliary inclined grooves, the supporting bridge columns and the steel trestle docking pieces and the docking stabilizing pieces, for the docking work of adjacent steel trestles, firstly, good pre-docking work can be carried out, thereby reducing the amount of operation of the staff during the hoisting process and improving the construction safety; and after the pre-docking work is completed, the tightness of the docking of adjacent steel trestles can be improved through the docking stabilizing pieces, thereby ensuring the quality of later welding and meeting the actual construction needs.

Description

Technical Field

[0001] The invention relates to the technical field of bridge construction, in particular to a steel trestle for a river-spanning bridge and a construction method thereof. Background Art

[0002] A bridge generally refers to a structure erected across rivers, lakes, and the sea to enable vehicles and pedestrians to pass smoothly. To adapt to the modern high-speed development of the transportation industry, bridges are also extended to refer to buildings that are erected to cross mountain streams, poor geology, or meet other transportation needs to make travel more convenient. A bridge is generally composed of an upper structure, a lower structure, supports, and ancillary structures. The upper structure, also known as the span structure, is the main structure for crossing obstacles. The lower structure includes abutments, piers, and foundations. Supports are force transmission devices installed at the supporting locations between the span structure and the piers or abutments. Ancillary structures refer to bridgehead slabs, conical slope protection, bank protection, diversion projects, etc.

[0003] During the construction of a cross-river bridge, sections of steel trestles are usually spliced ​​together and built on bridge piers. Under the existing technology, during the actual construction process, the steel trestles are usually hoisted and connected to the built steel trestles. During this process, workers are required to help with the docking work at the corresponding positions, that is, to ensure that there is no misalignment deviation in the docking accuracy. After that, the workers weld and fix the splicing positions. This process is more troublesome for the docking work between the steel trestles, and has an impact on the welding quality, thereby affecting the overall construction quality. In addition, the personal safety of the workers will be threatened during the lowering of the steel trestles, which cannot meet the actual construction needs.

[0004] To this end, the present invention proposes a steel trestle for a cross-river bridge and a construction method thereof to solve the above-mentioned problems. Summary of the invention

[0005] The object of the present invention is to provide a steel trestle for a river-spanning bridge and a construction method thereof, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a steel trestle for a river-crossing bridge, comprising a steel trestle body and supporting bridge columns, wherein guide auxiliary plates are fixedly arranged at the bottom of both ends of the steel trestle body, and an auxiliary inclined groove is arranged on one side of the guide auxiliary plate;

[0007] A steel trestle docking piece is connected to the supporting bridge column, and the steel trestle docking piece includes a docking carrier plate, a card slot, a limit threaded groove, a card strip, a docking slot, an edge groove, a threaded through hole, a round hole, a positioning screw, and a knob;

[0008] The docking stabilizer comprises a plug plate, an extrusion card plate, an auxiliary spring, a push bevel groove, an arc-shaped bevel groove, an extrusion thread column, a column, a movable ring, a ball, a locking spring, a limit slider, a limit slide groove, and a handle.

[0009] Preferably, a clamping strip is fixedly provided at the bottom end of the docking carrier plate, the clamping strip is adapted to be clamped with the clamping slot, and a limiting threaded groove is provided in the clamping slot, the docking slot is symmetrically provided on the top surface of the docking carrier plate, the side grooves are symmetrically provided on both sides of the docking carrier plate, and the side grooves are connected to the docking slot, the threaded through holes are symmetrically provided at both ends of the docking carrier plate, and are connected to the side grooves, the circular hole is symmetrically provided in the docking carrier plate, one end of the circular hole extends through to the clamping strip, and an accommodating groove is provided at the orifice of the other end, a positioning screw is adapted to be inserted into the circular hole, the positioning screw is adapted to be threadedly connected with the limiting threaded groove, and a knob is fixedly provided at one end of the positioning screw, and a straight-shaped rotating groove is provided at the end of the knob.

[0010] Preferably, the circular holes and the limiting thread grooves are arranged at corresponding positions and have the same number of groups.

[0011] Preferably, the docking slots and the guide auxiliary plates have corresponding setting positions and the same number of setting groups, and the two are adaptably plugged in.

[0012] Preferably, the plug plate is adapted to be plugged into the side groove, and a movable cavity is provided on one side of the plug plate, in which an extrusion card plate is movably provided, one side of the extrusion card plate extends to the outside of the plug plate, and an auxiliary spring is equidistantly fixedly provided on the other side, the pushing inclined grooves are symmetrically arranged at both ends of the plug plate, and an arc-shaped inclined groove is arranged on the slope in the pushing inclined groove, the extrusion threaded column is adapted to be threadedly connected with the threaded through hole, and a column is fixedly provided at one end of the extrusion threaded column, an annular movable groove is provided in the column, a movable ring is movably provided in the annular movable groove, balls are equidistantly and movably embedded at one end of the movable ring, and a locking spring is fixedly provided at the other end, limiting sliders are symmetrically provided on both sides of one end of the movable ring, the limiting slider is movably arranged in the limiting slide groove, and the limiting slide groove is symmetrically arranged on the inner side wall of the annular movable groove, and the handle is symmetrically fixedly provided on one end side of the column.

[0013] Preferably, the extrusion thread column and the push bevel groove are arranged at corresponding positions and have the same number of groups.

[0014] Preferably, the extrusion clamps and the auxiliary chute are arranged at corresponding positions and have the same number of groups.

[0015] A method for constructing a steel trestle for a river-crossing bridge comprises the following steps:

[0016] S1: Use a crane to lift the main body of the steel trestle, align the guide auxiliary plate at the bottom of the main body of the steel trestle with the docking slot on the docking carrier and insert it, then hoist another main body of the steel trestle. At this time, the fast pre-docking work of the main body of the steel trestle is achieved by the clamping of the guide auxiliary plate and the docking slot;

[0017] S2: The two adjacent steel trestles are stably butted by setting the steel trestle butt joint pieces and butt stabilizing pieces to ensure the stability of subsequent welding construction and improve the construction quality; and in this process, it is convenient for the staff to operate and reduce safety hazards.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention improves and optimizes the steel trestles for cross-river bridges and their construction, that is, through the coordinated use of the set guide auxiliary plates, auxiliary inclined grooves, supporting bridge columns and steel trestle docking parts and docking stabilizing parts, for the docking work of adjacent steel trestles, firstly, good pre-docking work can be carried out, thereby reducing the workload of workers during the lifting process and improving construction safety; and after the pre-docking work is completed, the tightness of the docking of adjacent steel trestles can be improved through the docking stabilizing parts, thereby ensuring the quality of later welding and meeting actual construction needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The left side schematic diagram of the connection between the steel trestle and the supporting bridge column structure of the present invention;

[0021] Figure 2 For the present invention Figure 1 A partial enlarged schematic diagram of the structure connection;

[0022] Figure 3 It is a schematic diagram of the left and right sides of the connection between the steel trestle and the supporting bridge column structure of the present invention;

[0023] Figure 4 It is a bottom view of the connection between the steel trestle and the supporting bridge column structure of the present invention;

[0024] Figure 5 For the present invention Figure 4 A partial enlarged schematic diagram of the structure connection;

[0025] Figure 6 It is a schematic diagram of the structural connection between the supporting bridge column and the steel trestle docking piece of the present invention;

[0026] Figure 7 For the present invention Figure 6 A partial enlarged schematic diagram of the structure connection;

[0027] Figure 8 It is a partial cross-sectional view of the connection of the docking stabilizing member structure of the present invention;

[0028] Fig. 9 For the present invention Figure 8 A partial enlarged schematic diagram of the structure connection;

[0029] Fig.10 It is a partial cross-sectional view of the connection of the extruded thread column structure in the docking stabilizer of the present invention;

[0030] Fig.11 For the present invention Fig.10 A partial enlarged schematic diagram of the structural connection.

[0031] In the figure: steel trestle main body 1, guide auxiliary plate 2, auxiliary inclined groove 3, supporting bridge column 4, steel trestle docking part 5, docking carrier plate 501, card slot 502, limiting thread groove 503, card strip 504, docking slot 505, side groove 506, threaded through hole 507, round hole 508, positioning screw 509, knob 510, docking stabilizer 6, plug plate 601, extrusion card plate 602, auxiliary spring 603, push inclined groove 604, arc inclined groove 605, extrusion thread column 606, column 607, movable ring 608, ball 609, locking spring 610, limiting slider 611, limiting slide groove 612, handle 613. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention are described clearly and completely below. The embodiments of the present invention and all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0033] See also Figures 1 to 11 The present invention provides a technical solution: a steel trestle for a river-crossing bridge, comprising a steel trestle body 1 and supporting bridge columns 4, guide auxiliary plates 2 are fixedly arranged at the bottom of both ends of the steel trestle body 1, and an auxiliary inclined groove 3 is arranged on one side of the guide auxiliary plate 2;

[0034] The supporting bridge column 4 is connected with a steel trestle docking piece 5, which includes a docking carrier plate 501, a clamping groove 502, a limiting thread groove 503, a clamping strip 504, a docking slot 505, a side groove 506, a threaded through hole 507, a round hole 508, a positioning screw 509, and a knob 510;

[0035] The docking stabilizer 6 includes an insert plate 601, an extrusion card plate 602, an auxiliary spring 603, a push bevel groove 604, an arc-shaped bevel groove 605, an extrusion threaded column 606, a column 607, a movable ring 608, a ball 609, a locking spring 610, a limit slider 611, a limit slide groove 612, and a handle 613.

[0036] A clamping strip 504 is fixedly provided at the bottom end of the docking carrier 501, and the clamping strip 504 is adapted to be clamped with the clamping slot 502, and a limited threaded groove 503 is provided in the clamping slot 502, a docking slot 505 is symmetrically arranged on the top surface of the docking carrier 501, side grooves 506 are symmetrically arranged on both sides of the docking carrier 501, and the side grooves 506 are connected to the docking slot 505, threaded through holes 507 are symmetrically arranged at both ends of the docking carrier 501, and are connected to the side grooves 506, and round holes 508 are symmetrically arranged in the docking carrier 501, and the round holes One end of 508 extends through and reaches the clamping strip 504, and a receiving groove is provided at the opening of the other end. A positioning screw 509 is provided to match and plug in the circular hole 508. The positioning screw 509 is threadedly connected to the limiting thread groove 503, and a knob 510 is fixedly provided at one end of the positioning screw 509, and a straight-shaped rotating groove is provided at the end of the knob 510. The circular hole 508 corresponds to the limiting thread groove 503 in the setting position and has the same number of settings. The docking slot 505 corresponds to the setting position of the guide auxiliary plate 2 and has the same number of settings, and the two are matched and plugged in.

[0037] The plug plate 601 is adapted to be plugged with the side groove 506, and a movable cavity is provided on one side of the plug plate 601, in which a squeeze card plate 602 is movably provided, one side of the squeeze card plate 602 extends to the outside of the plug plate 601, and an auxiliary spring 603 is fixedly provided on the other side at an equal distance, and the pushing inclined grooves 604 are symmetrically arranged at both ends of the plug plate 601, and an arc-shaped inclined groove 605 is provided on the slope of the pushing inclined groove 604, and the extrusion threaded column 606 is threadedly connected with the threaded through hole 507, and a column 607 is fixedly provided at one end of the extrusion threaded column 606, and an annular movable groove is provided in the column 607, and the annular movable groove A movable ring 608 is movably arranged in the middle, a ball 609 is equidistantly and movably engaged with one end of the movable ring 608, a locking spring 610 is fixedly arranged at the other end, limiting sliders 611 are symmetrically arranged on both sides of one end of the movable ring 608, the limiting sliders 611 are movably arranged in the limiting slide groove 612, and the limiting slide groove 612 is symmetrically arranged on the inner side wall of the annular movable groove, and the handle 613 is symmetrically and fixedly arranged on one end side of the column 607; the extrusion threaded column 606 and the pushing inclined groove 604 are set in corresponding positions and the number of sets is the same; the extrusion clamping plate 602 and the auxiliary inclined groove 3 are set in corresponding positions and the number of sets is the same.

[0038] A method for constructing a steel trestle for a river-crossing bridge comprises the following steps:

[0039] First, fix the docking carrier 501 on the supporting bridge column 4 through the positioning screw 509, that is, insert the clamping strip 504 at the bottom end of the docking carrier 501 into the clamping slot 502 on the supporting bridge column 4, and align the circular hole 508 on the docking carrier 501 with the limiting thread groove 503 in the clamping slot 502, then pass the positioning screw 509 through the circular hole 508, and then threadedly connect it with the limiting thread groove 503, tighten the positioning screw 509 so that the knob 510 enters the placement groove at the end of the circular hole 508, use the crane to lift the steel trestle body 1, align the guide auxiliary plate 2 at the bottom end of the steel trestle body 1 with the docking slot 505 on the docking carrier 501, and then lift another steel trestle body 1. At this time, the fast pre-docking work of the steel trestle body 1 construction is realized by clamping the guide auxiliary plate 2 with the docking slot 505. This process does not require the staff to perform full manual operation during the hoisting and docking process, thereby reducing its safety hazards;

[0040] The two adjacent steel trestles are processed by the provided steel trestle docking pieces 5 and docking stabilizing pieces 6 to achieve stable docking, thereby ensuring the stability of the subsequent welding construction. The specific operation of this process is that after the adjacent butted steel trestles are inserted into the docking slot 505 on the guide auxiliary plate 2, the ends of the steel trestles are docked, and then they are welded and connected. Before this, it is necessary to ensure the tightness of the docking between the two to ensure the quality of the welding construction. First, the insert plate 601 is inserted into the side groove 506, and the extrusion card plate 602 is made to enter the auxiliary inclined groove 3 on one side of the guide auxiliary plate 2. At this time, the pushing inclined grooves 604 set at both ends of the insert plate 601 are aligned with the threaded through holes 507, and then the extrusion threaded column 606 is rotated by the handle 613 to make The end of the extruded threaded column 606 enters the pushing inclined groove 604 and squeezes the arc-shaped inclined groove 605, so that the plug plate 601 squeezes the extrusion card plate 602, and the extrusion card plate 602 squeezes the inclined surface of the auxiliary inclined groove 3. At the same time, the auxiliary spring 603 is in a compressed state. The extrusion card plate 602 can stably squeeze the inclined surface of the auxiliary inclined groove 3 under the rebound effect of the auxiliary spring 603. In the process of squeezing the inclined surface of the auxiliary inclined groove 3, the stability of the insertion of the guide auxiliary plate 2 and the docking slot 505 can be improved, that is, the stability of the overlap between the steel trestle and the supporting bridge column 4 can be ensured; and the tightness of the docking of adjacent steel trestles can be ensured, and the quality of subsequent welding work can be ensured;

[0041] During the process of tightening the extruded threaded column 606, the movable ring 608 is squeezed and the locking spring 610 is in a compressed state, so that the extruded threaded column 606 is locked under the rebound pressure of the locking spring 610. The purpose of arranging the ball 609 at the end of the movable ring 608 is to ensure the stable rotation of the extruded threaded column 606 and improve its operating convenience.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A steel trestle for a river-crossing bridge, comprising a steel trestle body (1) and supporting bridge columns (4), wherein guide auxiliary plates (2) are fixedly arranged at the bottom of both ends of the steel trestle body (1), and an auxiliary inclined groove (3) is arranged on one side of the guide auxiliary plate (2); Features: A steel trestle docking piece (5) is connected to the supporting bridge column (4), and the steel trestle docking piece (5) comprises a docking carrier plate (501), a clamping groove (502), a limiting thread groove (503), a clamping strip (504), a docking slot (505), an edge groove (506), a threaded through hole (507), a round hole (508), a positioning screw (509), and a knob (510); A docking stabilizer (6), wherein the docking stabilizer (6) comprises a plug plate (601), an extrusion card plate (602), an auxiliary spring (603), a push inclined groove (604), an arc-shaped inclined groove (605), an extrusion threaded column (606), a column (607), a movable ring (608), a ball (609), a locking spring (610), a limit slider (611), a limit slide groove (612), and a handle (613); A clamping strip (504) is fixedly arranged at the bottom end of the docking carrier (501), the clamping strip (504) is adapted to be clamped with the clamping slot (502), and a limiting threaded groove (503) is arranged in the clamping slot (502), the docking slot (505) is symmetrically arranged on the top surface of the docking carrier (501), the side grooves (506) are symmetrically arranged on both sides of the docking carrier (501), and the side grooves (506) are connected to the docking slot (505), and the threaded through holes (507) are symmetrically arranged at both ends of the docking carrier (501). , and is connected to the side groove (506), the circular hole (508) is symmetrically arranged in the docking carrier (501), one end of the circular hole (508) extends through the card strip (504), and the other end of the hole is provided with a receiving groove, and the circular hole (508) is adapted to be plugged with a positioning screw (509), the positioning screw (509) is adapted to be threadedly connected with the limiting thread groove (503), and a knob (510) is fixedly arranged at one end of the positioning screw (509), and a straight-shaped rotating groove is arranged at the end of the knob (510).

2. The steel trestle for a river-crossing bridge according to claim 1 is characterized in that: The circular holes (508) and the limiting thread grooves (503) are arranged at corresponding positions and have the same number of groups.

3. The steel trestle for a river-crossing bridge according to claim 1 is characterized in that: The docking slots (505) and the guide auxiliary plates (2) are arranged at corresponding positions and have the same number of groups, and the two are adapted to be plugged in.

4. The steel trestle for a river-crossing bridge according to claim 1 is characterized in that: The plug plate (601) is adapted to be plugged into the side groove (506), and a movable cavity is provided on one side of the plug plate (601), in which a pressing card plate (602) is movably provided, one side of the pressing card plate (602) extends to the outside of the plug plate (601), and an auxiliary spring (603) is equidistantly and fixedly provided on the other side, the pushing inclined groove (604) is symmetrically provided at both ends of the plug plate (601), and an arc-shaped inclined groove (605) is provided on the slope of the pushing inclined groove (604), the pressing threaded column (606) is adapted to be threadedly connected with the threaded through hole (507), and one end of the pressing threaded column (606) is fixedly provided. A column (607) is fixedly provided, an annular movable groove is provided in the column (607), a movable ring (608) is movably provided in the annular movable groove, one end of the movable ring (608) is equidistantly and movably embedded with a ball (609), and the other end is fixedly provided with a locking spring (610), and limiting sliders (611) are symmetrically provided on both sides of one end of the movable ring (608), the limiting slider (611) is movably provided in the limiting slide groove (612), and the limiting slide groove (612) is symmetrically provided on the inner side wall of the annular movable groove, and the handle (613) is symmetrically and fixedly provided on one end side of the column (607).

5. The steel trestle for a river-crossing bridge according to claim 4 is characterized in that: The extrusion threaded columns (606) and the pushing inclined grooves (604) are arranged at corresponding positions and have the same number of groups.

6. The steel trestle for a river-crossing bridge according to claim 4, characterized in that: The squeezing clamps (602) and the auxiliary chute (3) are arranged at corresponding positions and have the same number of groups.

7. A method for constructing a steel trestle for a river-spanning bridge as claimed in any one of claims 1 to 6, characterized in that: The construction method comprises the following steps: S1: Use a crane to lift the steel trestle main body (1), align the guide auxiliary plate (2) at the bottom end of the steel trestle main body (1) with the docking slot (505) on the docking carrier plate (501) and insert it, then lift another steel trestle main body (1), at this time, the fast pre-docking work of the steel trestle main body (1) is achieved by the clamping connection between the guide auxiliary plate (2) and the docking slot (505); S2: By using the steel trestle docking piece (5) and the docking stabilizing piece (6) to process two adjacent steel trestles for stable docking, the stability of the subsequent welding construction is ensured, and the construction quality is improved; and in this process, the operation of the staff is facilitated, and the safety hazard is reduced.

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