CN221721389U - Jacking system for double-cantilever bent cap construction - Google Patents

Abstract

The utility model provides a jacking system for double-cantilever bent cap construction, which comprises a jacking oil cylinder, a plurality of standard support sections and a plurality of attachment hoops, wherein the jacking oil cylinder is connected with the standard support sections; the standard support sections are detachably connected from top to bottom in sequence, and the uppermost standard support section is propped against a capping beam template support unit to be jacked; the attaching hoop sections detachably lock the corresponding standard support sections on the bridge pier columns which are constructed completely; one end of the jacking oil cylinder is detachably arranged on the bent cap template support unit, and the other end of the jacking oil cylinder is detachably arranged on the standard support section; the jacking oil cylinders can drive the capping beam template support units to move up and down along the bridge pier columns by changing the number of the standard support sections and connecting the jacking oil cylinders with the standard support sections at different height positions. The jacking system can be suitable for modularized construction, improves the construction efficiency and reduces the construction cost of the bent cap.

Description

A jacking system for double cantilever cap beam construction

Technical Field

The invention relates to the technical field of pouring construction of a bridge cantilever cap beam, and in particular to a jacking system for the construction of a double cantilever cap beam.

Background Art

A cantilever cap beam is a bridge structure mainly composed of a support, an upper structure and a lower structure. There is no support at the cantilever end and there is a gap in the middle. The cap beam is constructed by casting in sections. After one section is completed, the bracket and mold are moved to cast the next section of the cantilever.

In the prior art, the construction of cantilever cap beams usually uses through rods or fixed clamps as supports, and then the Bailey beam, distribution beam, bottom formwork, and side formwork are hoisted at a high position, and then poured.

The through-steel rod method is to reserve holes in the pier column to install the corbel, build a bracket upwards from the corbel as the starting point, and set up a ladder channel from the ground, and the ladder channel is attached to the pier column at intervals. The hoop method refers to using a hoop to tighten the pier column, build a bracket upwards from the hoop as the starting point, and set up a ladder channel from the ground, and the ladder channel is attached to the pier column at intervals.

The above two methods have the following disadvantages:

1. The parts of both methods are relatively loose, and a large number of parts need to be hoisted.

2. It takes a long time to configure an independent crane, and because the parts that need to be lifted by the crane are too scattered, the crane takes a long time, resulting in a long construction period and high construction costs.

3. Most components are installed at high positions, which poses a great safety hazard.

4. After the construction of a group of piers and cap beams is completed, all equipment components need to be transported one by one to the next group of workstations, which is time-consuming and labor-intensive.

Therefore, during the construction of the cap beam, according to the needs of on-site construction, there is an urgent need for a cap beam construction system in which the bracket, bottom formwork, side formwork, etc. can be installed in a low-position modular manner and can rise, fall and translate as a whole, so as to reduce the high-altitude installation work of scattered parts, reduce the occupancy time of cranes, improve construction efficiency, shorten the construction period, and improve the safety factor of construction.

Then, due to the structural particularity of the double-cantilever cap beam, the existing jacking systems used in the construction of bridge cap beams cannot meet the requirements of modular construction, nor can they achieve safe and effective jacking.

Summary of the invention

In order to solve the problems in the prior art, the present invention provides a jacking system for double-cantilever cap beam construction which can be applicable to modular construction, improve construction efficiency and reduce construction costs.

To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a jacking system for the construction of a double-cantilever cap beam, the jacking system comprising a jacking cylinder, a plurality of standard support sections, and a plurality of attachment hoops; the plurality of standard support sections are detachably connected in sequence from top to bottom, and the uppermost standard support section is against the cap beam formwork support unit to be jacked; the attachment hoop segments detachably lock the corresponding standard support sections on the completed bridge piers; one end of the jacking cylinder is detachably mounted on the cap beam formwork support unit to be jacked, and the other end of the jacking cylinder is detachably mounted on the standard support section; by changing the number of the standard support sections and connecting the jacking cylinder to the standard support sections at different heights, the jacking cylinder can drive the cap beam formwork support unit to move up and down along the bridge piers.

According to a preferred technical solution, the jacking system further comprises a plurality of adjustable support sections of different lengths, and the adjustable support sections are detachably installed in sequence from top to bottom between the cap beam formwork support unit and the uppermost standard support section.

A preferred technical solution also includes a unloading block, which is installed between the unit between the cap beam formwork and the uppermost adjustment support node.

According to a preferred technical solution, the cap beam formwork support unit comprises a cap beam formwork support, on which a slide rail is arranged, on which a plurality of pulleys which can slide along the slide rail are arranged; the pulleys can be used to load standard support sections, attach clamps, adjust support sections or unload blocks.

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

1. The jacking system is used to lift the cap beam formwork support unit and the modular cap beam formwork unit to the working height as a whole, which not only reduces the risk of high-altitude operations, but also greatly improves the operation efficiency during construction.

2. After the low-position modular installation, the cap beam formwork support and the equipment mounted on it are lifted to the working height as a whole using the lifting cylinder. The cap beam formwork support unit and the components of the cap beam formwork are all installed at a low position to improve work efficiency and reduce the safety risks of high-altitude operations.

3. The jacking system has a simpler structure and is easy to disassemble. The standard support sections (standard length is used, which is conducive to standardization and unification), unloading blocks (easy to disassemble and can adapt to a certain height adjustment), and adjustable support sections (different lengths are used to adjust the height with standard support sections) can be used together to achieve any height required for construction. It has a wide range of heights and can almost stay at the height working surface of any pier. It has a strong ability to adapt to the height of the bridge, which is conducive to cost savings.

In summary, the jacking system of the present invention can be applied to the construction of double-cantilever cap beams, which can significantly reduce the construction cost of bridge cap beams, greatly improve construction efficiency, significantly reduce high-altitude operations, greatly improve safety, and greatly improve the working environment of construction workers.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a front view of the overall structure of a double cantilever cap beam construction system.

FIG. 2 is a three-dimensional view of the overall structure of a double cantilever cap beam construction system.

FIG. 3 is a schematic diagram of the base structure of a double cantilever cap beam construction system.

FIG. 4 is a schematic diagram of the structure of the cap beam formwork support.

FIG. 5 is a schematic structural diagram of a movable sheet frame.

FIG. 6 is a schematic structural diagram of a standard support section of the jacking system of the present invention.

FIG. 7 is a schematic structural diagram of a pulley.

FIG. 8 is a schematic structural diagram of an elastic guide wheel.

FIG. 9 is a schematic diagram of the three-dimensional structure of the elastic guide wheel.

Figure 10 is a schematic diagram of the partial structure of the cap beam formwork support.

FIG. 11 is a front view of the unloading block of the jacking system of the present invention.

FIG. 12 is a schematic diagram of the three-dimensional structure of the unloading block.

Figure 13 is a schematic diagram of the connection structure of the modular cap beam formwork unit on the cap beam formwork support.

FIG. 14 is an enlarged view of portion A in FIG. 12 .

Figure 15 is a schematic diagram of the overall structure of the modular cap beam formwork unit.

Figure 16 is a schematic diagram of the structure of the modular cap beam formwork unit after the bottom formwork and tie rods are removed.

FIG. 17 is an enlarged view of portion B in FIG. 15 .

Figure 18 is a diagram showing the installation status of the cap beam formwork support unit and the modular cap beam formwork unit at a low position.

Figures 19 to 22 are process diagrams showing the cap beam formwork support and the modular cap beam formwork unit gradually climbing upward along the bridge pier.

Figure 23 is a front view of the state where the cap beam formwork support and the modular cap beam formwork unit are lowered onto the translation connection support.

Figure 24 is a top view of the state where the cap beam formwork support and the modular cap beam formwork unit are lowered onto the translation connection support.

FIG. 25 is a three-dimensional view of the state after the reinforcing support frame is installed.

FIG. 26 is a top view of the state after the reinforcing support frame is installed.

Figure 27 is a three-dimensional view of the state after removing the movable film frame.

Figure 28 is a top view of the state after the movable sheet frame is removed.

Figure 29 is a diagram showing the state of the double cantilever cap beam after it has been completely translated out of the bridge pier.

Figure 30 shows the state of the double cantilever cap beam after it has been completely translated out of the bridge pier and the movable frame has been installed.

DETAILED DESCRIPTION

The embodiment of the jacking system for the construction of a double cantilever cap beam of the utility model is further described with reference to the accompanying drawings.

Example 1

As shown in Figures 1 to 30, a double cantilever cap beam construction system includes a cap beam formwork support unit 1, a modular cap beam formwork unit 2, and a jacking system 3; the modular cap beam formwork unit 2 is detachably installed on the cap beam formwork support unit 1; in this embodiment, the double cantilever cap beam construction system is also configured with a planar universal translation system 4.

The jacking system 3 includes a jacking cylinder 31, a plurality of standard support nodes 32, and a plurality of attachment hoops 33; the plurality of standard support nodes 32 are detachably connected from top to bottom in sequence, and the uppermost standard support node 32 is abutted against the cap beam formwork support unit 1; the attachment hoop 33 divides the corresponding standard support node 32 into sections and detachably locks it on the completed bridge pier 04; one end of the jacking cylinder 31 is detachably mounted on the cap beam formwork support unit 1, and the other end of the jacking cylinder 31 is detachably mounted on the standard support node 32; by changing the number of the standard support nodes 32, and connecting the jacking cylinder 31 to the standard support nodes 32 at different heights, the jacking cylinder 31 can drive the cap beam formwork support unit 1 to move up and down along the bridge pier 04.

The jacking system 3 also includes a plurality of adjustable support sections 34 of different lengths, and the adjustable support sections 34 are detachably installed in sequence from top to bottom between the cap beam formwork support unit 1 and the uppermost standard support section 32 .

The double cantilever cap beam construction system also includes a drop block 35, which is installed between the cap beam formwork support unit 1 and the uppermost adjustment support section 34. As shown in Figures 11 and 12, the drop block 35 is in the shape of an "I" as a whole, including an upper adjustment block 35, a lower adjustment block 36 and an intermediate adjustment block 37; there are two intermediate adjustment blocks 37, which are respectively arranged on the left and right sides between the upper adjustment block 35 and the lower adjustment block 36; and the upper adjustment block 35, the lower adjustment block 36 and the two intermediate adjustment blocks 37 are in contact through an inclined surface toward the center of the "I" shape, and an adjustment screw 39 for adjusting the distance between the two intermediate adjustment blocks 37 is inserted between the two intermediate adjustment blocks 37. By rotating the adjustment screw 39, the opening and closing distance between the two intermediate adjustment blocks 37 is adjusted, thereby changing the vertical distance between the upper adjustment block 35 and the lower adjustment block 36. When the two middle adjustment blocks 37 are far away from each other, the vertical distance between the upper adjustment block 36 and the lower adjustment block 37 becomes smaller; when the two middle adjustment blocks 37 are close to each other, the vertical distance between the upper adjustment block 36 and the lower adjustment block 37 becomes larger. When the entire cap beam formwork support unit 1 needs to be lowered, the height of the unloading block 35 can be finely adjusted by setting the unloading block 35, and the upper surface of the unloading block 35 is lowered by 2 cm, so that it is more convenient to disassemble and adjust the support section 34.

The cap beam formwork support unit 1 includes a cap beam formwork support 11, on which a slide rail 12 is arranged, and on which a plurality of pulleys 13 that can slide along the slide rail 12 are arranged; the pulley 13 can be used to load a standard support section 32, an attachment clamp 33, an adjustment support section 34 or a unloading block 35.

The cap beam formwork support 11 is also provided with a detachable movable sheet frame 14; the cap beam formwork support unit 1 also includes a detachable reinforcing recessed support 15 used in matching with the movable sheet frame 14 of the cap beam formwork support 11, and the reinforcing recessed support 15 has at least one makeshift space for accommodating the corresponding bridge pier; by alternately installing/disassembling the corresponding reinforcing recessed support 15 and the movable sheet frame 14, the cap beam formwork support 11 and the modular cap beam formwork unit 2 can be moved out or moved into the corresponding bridge pier 04 as a whole.

When it is necessary to move the cap beam formwork support 11 and the modular cap beam formwork unit 2 out of the bridge pier 04 as a whole, first install the reinforcing recessed support 15 on the corresponding cap beam formwork support 11, then remove the corresponding movable sheet frame 14, and use the space left by the reinforcing recessed support 15 to move the cap beam formwork support 11 and the modular cap beam formwork unit 1 away from the corresponding bridge pier 04 as a whole. After moving into place, install the corresponding movable sheet frame 14, remove the corresponding reinforcing recessed support 15, and then move the cap beam formwork support 11 and the modular cap beam formwork unit 2 out of the corresponding bridge pier 04 as a whole.

When it is necessary to move the cap beam formwork support 11 and the modular cap beam formwork unit 2 as a whole into the bridge pier 04, first make the corresponding bridge pier 04 located in the making way space of the corresponding reinforced recessed support 15, then install the reinforced recessed support 15 on the corresponding cap beam formwork support 11, and then remove the corresponding movable sheet frame 14. The cap beam formwork support 11 and the modular cap beam formwork unit 2 can be moved and brought as a whole close to the corresponding bridge pier 04 by utilizing the making way space of the reinforced recessed support 15. After moving into place, install the corresponding movable sheet frame 14, remove the corresponding reinforced recessed support 15, and then the cap beam formwork support 11 and the modular cap beam formwork unit 2 can be moved as a whole into the corresponding bridge pier 04.

The cap beam formwork support unit 1 is equipped with a plurality of elastic guide wheels 16 ; when the lifting cylinder 31 drives the cap beam formwork support unit 1 to move up and down along the bridge pier 04 , the elastic guide wheels 16 roll along the surface of the bridge pier 05 to guide the cap beam formwork support unit 1 .

The modular cap beam template unit 2, as shown in Figures 15 to 17, includes a distribution beam 21, a bottom template 22, and a side template 23; the distribution beam 21 is detachably mounted on the cap beam template support unit 1; the bottom template 22 is mounted on the distribution beam 21; the side templates 23 are mounted on the distribution beam 21 and are respectively located on both sides of the bottom template 22; multiple modular cap beam template units 2 are sequentially spliced with each other, and the first and last modular cap beam template units 2 are provided with baffles 5 to form a complete cap beam template 6. The modular cap beam template unit 2 may also include a tie rod 24 located at the top for tightening the two side templates 23.

The side formwork 23 is provided with a straightening device, which includes a telescopic support rod 25, a rolling module 26, and a fixing device 27; the distribution beam 21 is a double-channel steel, which is provided with a plurality of mounting holes for mounting the fixing device 27, and the fixing device 27 can be fixed on the corresponding mounting holes of the double-channel steel as needed; one end of the telescopic support rod 25 is hinged to the side formwork 23, and the other end of the telescopic support rod 25 is hinged to the rolling module 26; the rolling module 26 can roll along the distribution beam 21, and one end of the rolling module 26 is hinged to the side formwork 23, and the other end of the rolling module 26 is against the fixing device 27; when the side formwork 23 is not fixedly installed on the distribution beam 21, it can slide along the distribution beam 21; the fixing device 27 is provided with a threaded adjustment push rod 28, and rotating the threaded adjustment push rod 28 can push the rolling module 26 to move on the distribution beam 21, so as to adjust the side formwork 23.

The modular cap beam template unit 2 is fixed to the cap beam template support 11 by a fixing clamping device 8, as shown in Figures 13 and 14, the fixing clamping device 8 includes a clamping plate 81, an upper clamping block 82, and a lower clamping block 83. The upper clamping block 82 and the lower clamping block 83 are both inserted at both ends of the clamping plate 81, and a fastening screw is inserted between the upper clamping block 82 and the lower clamping block 83. The upper clamping block 82 is pressed downward on the channel steel of the distribution beam 21, and the lower clamping block 83 is pressed upward on the steel structure profile on the upper part of the cap beam template support 11, thereby fixing the modular cap beam template unit 2 on the cap beam template support 11.

As shown in Figure 3, it is the working state of the bridge cap beam construction system. In this embodiment, a base 08 is additionally configured, and the base 08 is placed on the ground (in other embodiments, there may be a base, or the ground may be hardened sufficiently and the standard support section may be directly installed), and the bridge pier 04 is tightened and clamped by the threaded tie rod 07. The connecting seat 09, the bottom adjustment support section 34, and the standard support section 32 are placed on the base 08 in sequence, and each standard support section 32 is tightened on the bridge pier 04 by the threaded tie rod 07 with the clamp 33 attached to fix it. The cap beam formwork support unit 1 is placed on the unloading block 35, and the side formwork 23 is placed on the cap beam formwork support 11. The planar universal translation system 4 and the translation connection bracket 7 are placed on the ground to be used for translation.

The working process of a double cantilever cap beam construction system of the present invention is as follows:

Step S1, as shown in FIG18, the cap beam template support unit 1 and the modular cap beam template unit 2 are installed at a low position.

At the lower position of the bridge pier 04, assemble the standard support section 32, the jacking cylinder 31, and the corresponding attachment hoop 33 of the jacking system according to actual needs; assemble the cap beam template support unit 1; assemble the modular cap beam template unit 2 to the cap beam template support 11; load a certain amount of standard support sections 32, attachment hoops 33, adjustment support sections 34, and unloading blocks 35 on the pulley 13 according to actual needs;

Step S2, as shown in Figures 19 to 22, the cap beam formwork support unit 1 is climbed

S2a, the lifting cylinder 31 lifts a stroke, driving the cap beam formwork support unit 1 to climb to the preset position along the bridge pier 04; removes the standard support section 32 and the corresponding attachment clamp 33 from the pulley 13; the standard support section 32 removed from the pulley 13 is fixedly connected to the aforementioned uppermost standard support section 32 that has been assembled, and is locked on the bridge pier 04 through the corresponding attachment clamp 33; the lifting cylinder 31 retracts to allow the cap beam formwork support unit 1 to be temporarily supported on the current uppermost standard support section 32; the other end of the lifting cylinder 31 is removed from the lower standard support section 32, and after being reinstalled on the higher standard support section 32, the lifting cylinder 31 lifts again to drive the cap beam formwork support unit 1 to climb upward along the bridge pier 04;

S2b, repeat step S2a until the cap beam template support unit 1 is lifted to the predetermined position of the pier, remove the adjustment support section 34 and/or the unloading block 35 from the pulley 13 according to actual needs, adjust the cap beam template support unit 1 to the cap beam construction height, and carry out the cap beam construction at the current workstation;

Step S3, as shown in Figures 23 and 24, the cap beam formwork support unit 1 is lowered

S3a, after the cap beam construction of the current station is completed, the unloading block 35 and/or the adjustment support section 34, and/or the standard support section 32 are dismantled in sequence, and the standard support sections 32 from top to bottom are dismantled one by one by changing the connection between the jacking cylinder 31 and the standard support sections 32 of different heights from top to bottom, and the cap beam formwork support unit 1 is driven to descend;

Step S4, as shown in Figures 25 to 30, move the cap beam formwork support unit 1 to the next station

When the cap beam formwork support unit 1 is lowered to a predetermined position, it is seated on the universal translation system 4 on the ground; the reinforced recessed support 15 is installed on the corresponding cap beam formwork support 11, and then the corresponding movable sheet frame 14 is disassembled, and the space left by the reinforced recessed support 15 can be utilized to adopt the universal translation system 4 to move the cap beam formwork support 11 and the modular cap beam formwork unit 2 as a whole away from the bridge pier of the current work station, and after moving into position, the corresponding movable sheet frame 14 is installed, and the corresponding reinforced recessed support 15 is disassembled, and the cap beam formwork support 11 and the modular cap beam formwork unit 2 are moved as a whole out of the bridge pier 04 of the current work station;

When the cap beam formwork support 11 and the modular cap beam formwork unit 2 are moved as a whole into the bridge pier of the next station, firstly, the corresponding bridge pier 04 is positioned in the making way space of the corresponding reinforced recessed support 15, and then the reinforced recessed support 15 is installed on the corresponding cap beam formwork support 11, and then the corresponding movable sheet frame 14 is removed, and the cap beam formwork support 11 and the modular cap beam formwork unit 2 can be moved as a whole close to the corresponding bridge pier by using the making way space of the reinforced recessed support 15, and then the corresponding movable sheet frame 14 is installed after being moved into position, and the corresponding reinforced recessed support 15 is removed, and then the cap beam formwork support 11 and the modular cap beam formwork unit 2 can be moved as a whole into the corresponding bridge pier of the next station, so as to carry out the cap beam construction;

Repeat steps S2 to S4 until the entire cap beam construction is completed.

The above are only preferred embodiments of the present invention and are not intended to limit the present invention. It should be pointed out that any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims (4)

1. A jacking system for the construction of a double-cantilever cap beam, characterized in that: the jacking system comprises a jacking cylinder, a plurality of standard support sections, and a plurality of attachment hoops; the plurality of standard support sections are detachably connected in sequence from top to bottom, and the uppermost standard support section is against the cap beam formwork support unit to be jacked; the attachment hoop segments detachably lock the corresponding standard support sections on the completed bridge piers; one end of the jacking cylinder is detachably mounted on the cap beam formwork support unit to be jacked, and the other end of the jacking cylinder is detachably mounted on the standard support section; by changing the number of the standard support sections and connecting the jacking cylinder to the standard support sections at different heights, the jacking cylinder can drive the cap beam formwork support unit to move up and down along the bridge piers. 2. According to claim 1, a jacking system for the construction of a double cantilever cap beam is characterized in that: the jacking system also includes a plurality of adjustable support sections of different lengths, and the adjustable support sections are detachably installed in sequence from top to bottom between the cap beam formwork support unit and the uppermost standard support section. 3. A jacking system for the construction of a double cantilever cap beam according to claim 2, characterized in that it also includes a unloading block, which is installed between the unit between the cap beam formwork and the uppermost adjustment support node. 4. A jacking system for the construction of a double cantilever cap beam according to claim 1, characterized in that: the cap beam formwork support unit includes a cap beam formwork support, the cap beam formwork support is provided with a slide rail, and the slide rail is provided with a plurality of pulleys that can slide along the slide rail; the pulley can be used to load standard support sections, attach clamps, adjust support sections or unload blocks.