A rapid replacement system for sound barrier columns in renovation and expansion projects and its construction method

Abstract

The present invention discloses a method for rapidly replacing sound barrier columns in renovation and expansion projects. Horizontally distributed longitudinal beams are provided at the lower ends of the sound barrier columns, connecting the ends of multiple sound barrier columns. Multiple legs are provided on the lower surfaces of the longitudinal beams, connected to the longitudinal beams via hinged mechanisms. The lower ends of the legs are resting on rails, which are laid on track beams. The above-mentioned technical solution offers a simple process, minimal process changes, and safe and reliable construction. Construction is fast and convenient, with minimal impact on traffic. A quick-disassembly and quick-assembly system improves construction efficiency. The impact on existing sound barriers is minimized, avoiding the impact of repeated installation and disassembly on the sound barrier structure, resulting in excellent economic and social benefits.

Description

Technical Field

[0001] The present invention belongs to the technical field of road and bridge construction. More specifically, the present invention relates to a rapid underpinning system for sound barrier columns in renovation and expansion projects; the present invention also relates to a construction method for the rapid underpinning system. Background Art

[0002] During the construction of the double-deck bridge renovation and expansion, a prefabricated, hoisted process was employed. However, due to the impact of the sound barrier, the cap beam could not be transported and rotated due to the presence of the barrier columns. The columns obstructed the transport and rotation of the cap beam. To address this, the conventional method was to remove the sound barrier, transport the cap beam, rotate it, and then re-erect the barrier. However, this approach involved a significant workload, high safety risks, difficulty maintaining traffic flow, and a long construction period. Furthermore, the prolonged traffic closures required significantly restricted traffic on the existing line. Expediting the transport and rotation of the cap beam became a key issue.

[0003] During the construction of the double-deck bridge deck beam, the following technical difficulties occurred:

[0004] 1. Limited working space: The double-deck bridge of the renovation and expansion project is on the same line as the existing highway and is partially located within the sound barrier, resulting in limited construction space in both the plane and elevation.

[0005] 2. High requirements for traffic maintenance: The existing line is an important link for the regional national trunk highway. The implementation of the double-deck bridge reconstruction and expansion project in this area must be carried out under the conditions of bearing large traffic volume without interrupting traffic or with extremely short interruptions. The removal of conventional sound barriers has a great impact on traffic and takes a long time.

[0006] 3. High construction difficulty: The sound barrier columns are large and span the existing line. When transporting and placing the double-deck bridge cover beams of the renovation and expansion project, they are affected by the sound barrier columns and cannot be rotated horizontally, resulting in many construction interferences and high difficulty.

[0007] 4. High security risks:

[0008] Due to the above conditions, the traditional sound barrier removal construction technology greatly restricts traffic during the transportation and transfer of the cap beam, making it difficult to achieve the goal of safe and fast construction. Summary of the Invention

[0009] The present invention provides a rapid replacement construction system for sound barrier columns in renovation and expansion projects, the purpose of which is to achieve rapid disassembly and installation of columns, and further to achieve smooth transportation and rotation of cap beams.

[0010] In order to achieve the above object, the technical solution adopted by the present invention is:

[0011] The rapid replacement system for sound barrier columns in renovation and expansion projects of the present invention is characterized in that horizontally distributed longitudinal beams are provided at the lower ends of the sound barrier columns, and the longitudinal beams connect the ends of multiple sound barrier columns; multiple legs are provided on the lower surfaces of the longitudinal beams, and the legs are connected to the longitudinal beams through a hinge mechanism; the lower ends of the legs are provided on steel rails; and the steel rails are laid on track beams.

[0012] The supporting legs include supporting leg No. 1, supporting leg No. 2, supporting leg No. 3 and supporting leg No. 4, and are distributed in sequence from front to rear in the forward direction of the cap beam.

[0013] The lower end of the sound barrier column is connected to the longitudinal beam through a pad.

[0014] A jack is provided between the lower end of the sound barrier column and the longitudinal beam.

[0015] Each of the supporting legs is provided with two steel columns; the two steel columns are connected by a diagonal brace.

[0016] In order to achieve the same purpose as the above technical solution, the present invention also provides a construction method for the above-mentioned rapid underpinning system for sound barrier columns in renovation and expansion projects, the process of which is as follows:

[0017] 1) Rapid underpinning system installation and force system conversion: Install the rapid underpinning system at the location where the obstructed column is underpinned; during installation, keep the No. 4 support leg in the raised state; use the rapid underpinning system to support the sound barrier column, and transfer the force to the rapid underpinning system;

[0018] 2) After the original obstructed sound barrier column is removed, the rapid support system is stressed, the No. 4 support leg returns to its original position, and the No. 3 support leg is raised;

[0019] 3) When the cap beam is transferred to between the No. 2 outrigger and the No. 3 outrigger, adjust the outrigger status, return the No. 3 outrigger to its original position, and lift the No. 2 outrigger;

[0020] 4) When the cap beam is transferred to between the No. 1 support leg and the No. 2 support leg, adjust the support leg status again and return the No. 2 support leg to its original position;

[0021] 5) The cap beam is moved forward into position, the transfer work is completed, the No. 1 support leg and its top crossbeam are removed, and the cap beam lifting and installation process begins, and the column replacement is completed.

[0022] 6) Restore the sound barrier columns, transfer the force to the sound barrier columns, and remove the rapid support system.

[0023] In the above 1), at this time, the main forces on the rapid support system are the No. 1 support leg, the No. 2 support leg and the No. 3 support leg, which cut and remove the part of the original sound barrier column to be dismantled; the cap beam is transported and rotated to enter the support area.

[0024] In the above 2), at this time, the main forces acting on the rapid support system are the No. 1 support leg, the No. 2 support leg and the No. 4 support leg, and the cap beam continues to move forward.

[0025] In the above 3), at this time, the main forces acting on the rapid support system are the No. 1 support leg, the No. 3 support leg, and the No. 4 support leg, and the cap beam continues to move forward.

[0026] In the above 4), at this time, the main forces acting on the rapid support system are the No. 2 support leg, the No. 3 support leg and the No. 4 support leg.

[0027] The present invention adopts the above-mentioned technical solution, with a simple process method, few process conversions, and safe and reliable construction; the construction is fast and convenient, with little impact on traffic; the construction efficiency is improved through the quick disassembly and quick assembly system; the impact on the existing sound barrier is minimal, and repeated installation and disassembly to avoid the impact on the sound barrier structure, has good economic and social benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The contents shown in the accompanying drawings and the symbols in the drawings are briefly described as follows:

[0029] Figure 1-1 Schematic diagram of the sound barrier column underpinning system of the present invention;

[0030] Figure 1-2 for Figure 1-1 a side view of the structure shown;

[0031] Figure 2 This is a schematic diagram of the force conversion of the sound barrier column underpinning of the present invention;

[0032] Figure 3 This is a schematic diagram of the fourth leg returning to its original position and the third leg being raised;

[0033] Figure 4 This is a schematic diagram of the present invention showing the No. 3 support leg returning to its original position and the No. 2 support leg being raised;

[0034] Figure 5 This is a schematic diagram of the return of the second column of the present invention;

[0035] Figure 6 This is a schematic diagram of the removal of the No. 1 support leg and its top crossbeam of the present invention;

[0036] Figure 7 This is a schematic diagram of restoring the sound barrier columns and dismantling the support system according to the present invention.

[0037] The following are marked in the figure:

[0038] 1. Sound barrier column, 2. Pad, 3. Longitudinal beam, 4. Jack, 5. Steel column, 6. Diagonal brace, 7. Rail, 8. Track beam, 9. Leg No. 1, 10. Leg No. 2, 11. Leg No. 3, 12. Leg No. 4, 13. Cap beam. DETAILED DESCRIPTION

[0039] The specific implementation methods of the present invention will be further explained in detail below by describing the embodiments with reference to the accompanying drawings, so as to help those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention.

[0040] like Figure 1-1 、 Figure 1-2 The structure of the present invention is a rapid replacement construction system for sound barrier columns in renovation and expansion projects. Horizontally distributed longitudinal beams 3 are provided at the lower ends of the sound barrier columns 1, and the longitudinal beams 3 connect the ends of multiple sound barrier columns 1.

[0041] The rapid underpinning system and construction method of the present invention include, but are not limited to, highway reconstruction and expansion projects; and involve rapid underpinning, installation of the cap beam 13, and optimized technology.

[0042] In order to solve the problems existing in the prior art and overcome its defects, realize the quick disassembly and assembly of the columns, and further realize the invention purpose of smooth transportation and rotation of the cap beam, the technical solution adopted by the present invention is:

[0043] like Figure 1-1 、 Figure 1-2 As shown, the rapid replacement system of the sound barrier columns of the renovation and expansion project of the present invention has multiple legs arranged on the lower surface of the longitudinal beam 3, and the legs are connected to the longitudinal beam 3 through a hinge mechanism; the lower ends of the legs are arranged on the rails 7; and the rails 7 are laid on the track beam 8.

[0044] The present invention starts from the sound barrier columns and provides a rapid support and replacement system for the columns, which enables quick disassembly and installation of the columns, thereby achieving the purpose of smooth transportation and rotation of the cap beam, avoiding the adverse factors of the traditional overall demolition plan, and has practical significance for the cap beam construction method in confined space and traffic maintenance conditions.

[0045] The advantages of the present invention are:

[0046] 1. The construction process is simple, with less process conversion and safe and reliable construction;

[0047] 2. The construction is fast and convenient with little impact on traffic;

[0048] 3. Quick disassembly and assembly system, higher construction and production efficiency;

[0049] 4. Minimize the impact on existing sound barriers and avoid repeated installation and disassembly that may affect the sound barrier structure.

[0050] The supporting legs include a No. 1 supporting leg 9, a No. 2 supporting leg 10, a No. 3 supporting leg 11 and a No. 4 supporting leg 12, and are distributed in sequence from the front to the rear in the forward direction of the cap beam 13.

[0051] The lower end of the sound barrier column 1 is connected to the longitudinal beam 3 through the pad 2.

[0052] A jack 4 is provided between the lower end of the sound barrier column 1 and the longitudinal beam 3 .

[0053] Each of the supporting legs is provided with two steel columns 5 ; the two steel columns 5 are connected by a diagonal brace 6 .

[0054] The rapid support and replacement system of the present invention is produced by welding the support plates of the originally obstructed sound barrier columns.

[0055] In order to achieve the same purpose as the above technical solution, the present invention also provides a construction method for the above-mentioned rapid underpinning system for sound barrier columns in renovation and expansion projects, the process of which is as follows:

[0056] 1) Rapid underpinning system installation and force system conversion: Install the rapid underpinning system at the obstructed column underpinning location; during installation, keep the fourth leg 12 in the raised state; use the rapid underpinning system to support the sound barrier column 1, and transfer the force to the rapid underpinning system;

[0057] 2) After the originally obstructed sound barrier column 1 is removed, the rapid support system is stressed, the fourth support leg 12 returns to its original position, and the third support leg 11 is lifted;

[0058] 3) When the cap beam 13 is transferred to between the second leg 10 and the third leg 11, the leg status is adjusted, the third leg 11 is returned to its original position, and the second leg 10 is lifted;

[0059] 4) When the cap beam 13 is transferred to between the No. 1 support leg 9 and the No. 2 support leg 10, the support leg state is adjusted again and the No. 2 support leg 10 is returned to its original position; (e.g. Figure 5 shown)

[0060] 5) The cap beam 13 is moved forward into position, the transfer work is completed, the No. 1 support leg 9 and its top crossbeam are removed, and the cap beam 13 lifting and installation process begins, and the column replacement is completed.

[0061] 6) Restore the sound barrier column 1, transfer the force to the sound barrier column 1, and remove the rapid support system. (such as Figure 7 shown)

[0062] like Figure 2 As shown:

[0063] In the above 1), at this time, the main forces acting on the rapid replacement system are the No. 1 support leg 9, the No. 2 support leg 10 and the No. 3 support leg 11, which cut and remove the part of the original sound barrier column 1 to be dismantled; the cap beam 13 is transported and rotated to enter the replacement area.

[0064] like Figure 3 As shown:

[0065] In the above 2), at this time, the main forces acting on the rapid support system are the No. 1 support leg 9, the No. 2 support leg 10 and the No. 4 support leg 12, and the cap beam 13 continues to move forward.

[0066] like Figure 4 As shown:

[0067] In the above 3), at this time, the main forces acting on the rapid support system are the No. 1 support leg 9, the No. 3 support leg 11, and the No. 4 support leg 12, and the cap beam 13 continues to move forward.

[0068] like Figure 6 As shown:

[0069] In the above 4), at this time, the main forces acting on the rapid support system are the second support leg 10, the third support leg 11 and the fourth support leg 12.

[0070] The key point of this invention is the use of a column underpinning system to enable rapid column removal and installation, minimizing traffic impact and ensuring safety and reliability. This system is suitable for projects such as highway and urban road reconstruction and expansion projects, and its technical solution is highly practical and economical. For example, the construction of a large deck beam 13 of a double-deck bridge in a certain urban reconstruction and expansion project involved the use of a column underpinning system, enabling rapid column removal and installation, starting with the sound barrier columns. This system facilitated the smooth transportation and rotation of the deck beam 13, avoiding the disadvantages of traditional integrated demolition solutions and achieving excellent economic and social benefits.

[0071] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention.

Claims

1. A construction method for a rapid replacement system of sound barrier columns in a renovation and expansion project, wherein a horizontally distributed longitudinal beam (3) is provided at the lower end of the sound barrier column (1), and the longitudinal beam (3) connects the ends of multiple sound barrier columns (1); a plurality of supporting legs are provided on the lower surface of the longitudinal beam (3), and the supporting legs are connected to the longitudinal beam (3) through a hinge mechanism; the lower ends of the supporting legs are provided on a steel rail (7); and the steel rail (7) is laid on a track beam (8); The supporting legs include a No. 1 supporting leg (9), a No. 2 supporting leg (10), a No. 3 supporting leg (11) and a No. 4 supporting leg (12), and are sequentially distributed from front to rear in the forward direction of the cap beam (13); It is characterized by: The process of the construction method is as follows: 1) Rapid support system installation and force system conversion: Install the rapid support system at the support position of the obstructed column; during installation, make the fourth leg (12) in a raised state; use the rapid support system to support the sound barrier column (1), and convert the force to the rapid support system; 2) After the originally blocked sound barrier column (1) is removed, the rapid support system is stressed, the fourth support leg (12) returns to its original position, and the third support leg (11) is lifted; 3) When the cap beam (13) is transferred to between the second leg (10) and the third leg (11), the leg state is adjusted, the third leg (11) is returned to its original position, and the second leg (10) is lifted; 4) When the cap beam (13) is transferred to between the No. 1 support leg (9) and the No. 2 support leg (10), the support leg state is adjusted again and the No. 2 support leg (10) is returned to its original position; 5) The cap beam (13) is moved forward and in place, the transfer work is completed, the No. 1 support leg (9) and its top crossbeam are removed, and the cap beam (13) is lifted and installed, and the column replacement is completed; 6) Restore the sound barrier columns (1), transfer the force to the sound barrier columns, and remove the rapid support system.

2. The construction method of the rapid underpinning system for sound barrier columns in a renovation and expansion project according to claim 1 is characterized by: In the above 1), at this time, the main forces acting on the rapid support system are the No. 1 support leg (9), the No. 2 support leg (10) and the No. 3 support leg (11), which cut and remove the part of the original sound barrier column (1) to be dismantled; the cap beam (13) is transported and rotated to enter the support area.

3. The construction method of the rapid underpinning system for the sound barrier column of the renovation and expansion project according to claim 1 is characterized by: In the above-mentioned step 2), at this time, the main forces acting on the rapid support system are the No. 1 support leg (9), the No. 2 support leg (10) and the No. 4 support leg (12), and the cap beam (13) continues to move forward.

4. The construction method of the rapid underpinning system for the sound barrier column of the renovation and expansion project according to claim 1 is characterized by: In the above 3), at this time, the main forces acting on the rapid support system are the No. 1 support leg (9), the No. 3 support leg (11), and the No. 4 support leg (12), and the cap beam (13) continues to move forward.

5. The construction method of the rapid underpinning system for the sound barrier column of the renovation and expansion project according to claim 1 is characterized by: In the above 4), at this time, the main forces acting on the rapid support system are the second support leg (10), the third support leg (11) and the fourth support leg (12).

6. The construction method of the rapid underpinning system for the sound barrier column of the renovation and expansion project according to claim 1 is characterized by: The lower end of the sound barrier column (1) is connected to the longitudinal beam (3) via a pad (2).

7. The construction method of the rapid underpinning system for sound barrier columns in a renovation and expansion project according to claim 1 is characterized by: A jack (4) is provided between the lower end of the sound barrier column (1) and the longitudinal beam (3).

8. The construction method of the rapid underpinning system for sound barrier columns in a renovation and expansion project according to claim 1 is characterized by: Each of the supporting legs is provided with two steel columns (5); the two steel columns (5) are connected via a diagonal brace (6).

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