A movable formwork device for porous frame bridge

Abstract

The present application discloses a movable formwork device for a porous frame bridge, comprising a support trolley; a jacking mechanism is arranged on the support trolley, and the jacking mechanism is suitable for jacking the support trolley to a preset height; a formwork mechanism is arranged on the support trolley, and the formwork mechanism comprises a top plate and a side formwork, and the side formwork is hingedly arranged on both sides of the top plate so that each side formwork can be opened and closed to a preset position. The support trolley is moved to the construction position as a supporting base, and the top plate is placed at a preset height position by using the jacking mechanism. By setting the side formwork as a retractable opening and closing structure, the porous frame bridge can be fitted and the construction can be completed. After the construction is completed, the jacking mechanism and the formwork mechanism can be reset and reused, saving man-hours while reducing the cost consumption of the formwork.

Description

Technical Field

[0001] The present application relates to the technical field of bridge construction, and in particular to a movable formwork device for a porous frame bridge. Background Art

[0002] Box culvert construction generally adopts cast-in-place method. The bottom layer is set in the excavated trench, and a layer of concrete cushion is poured. Then the processed steel bars are tied on site, and the inner and outer molds are supported. For larger box culverts, the bottom plate and the lower part of the side wall are generally cast first, and then the upper part of the side wall and the top plate steel bars are tied, and the inner and outer molds are supported, and the upper part of the side wall and the top plate are cast. When the concrete reaches the strength required by the design, the mold is removed and the soil is backfilled on both sides of the box culvert at the same time. Among them, the frame culvert is a type of box culvert. The frame culvert refers to a culvert with a frame beam and column structure, which is generally divided into flowing water, pedestrians, and vehicles. The multi-span continuous frame bridge is a special form of a frame culvert with multiple cavities inside, which can be used for traffic, pedestrians or water crossing. It is common to adopt a sunken tunnel structure when it intersects with large traffic arteries.

[0003] The main structure of a multi-span continuous frame bridge mainly adopts full-span support construction, which adopts a construction method of scaffolding that is densely set up at a certain interval to play a supporting role. It is common in cast-in-place bridge construction and cast-in-place floor construction. Full-span support construction is a long-term method that requires a large number of formwork supports during construction. Support construction does not require large-scale lifting equipment. Support construction is to set up supports at the bridge location, pour bridge concrete on the supports, and remove the formwork and supports after the concrete reaches the strength. However, the wall and top slab of a multi-span continuous frame bridge must be constructed at the same time, and the consumption of support formwork used for construction is large and the construction period is long. Summary of the invention

[0004] The purpose of the present application is to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a movable formwork device for a porous frame bridge, which can save working hours, reduce costs, and improve construction efficiency.

[0005] According to the first aspect of the present application, the porous frame bridge movable formwork device includes:

[0006] Support trolley;

[0007] A lifting mechanism is arranged on the support trolley, and the lifting mechanism is suitable for lifting the support trolley to a preset height;

[0008] The template mechanism is arranged on the support trolley, and the template mechanism includes a top plate and side molds. The side molds are hingedly arranged on both sides of the top plate so that each side mold can be opened and closed to a preset position.

[0009] The movable formwork device for porous frame bridge according to the first aspect of the embodiment of the present application has at least the following beneficial effects: the support trolley is moved to the construction position as a supporting base, and the top plate is placed at a preset height by utilizing the jacking mechanism. By setting the side formwork to a retractable structure, the porous frame bridge can be fitted and the construction can be completed. After the construction is completed, the jacking mechanism and the formwork mechanism can be reset and reused, saving work hours and reducing the cost of the formwork.

[0010] According to the porous frame bridge movable formwork device described in the first aspect embodiment of the present application, the jacking mechanism includes a hydraulic jacking component and a supporting component, the hydraulic jacking component is used to raise and lower the support trolley, and the supporting component is suitable for supporting the support trolley when the support trolley is at a preset height.

[0011] According to the porous frame bridge movable formwork device described in the first aspect embodiment of the present application, the hydraulic jacking component includes a plurality of jacks and an electronic control component, the electronic control component is connected to each of the jacks, and the electronic control component is configured as a closed-loop automatic control method based on pressure and displacement to control each of the jacks.

[0012] According to the porous frame bridge movable formwork device described in the first aspect embodiment of the present application, the supporting component includes a first adjusting component and a pad, the first adjusting component is adjustably arranged at the bottom of the support trolley, the pad is arranged at the bottom of the first adjusting component, and the first adjusting component is used to adjust the relative distance between the pad and the bottom of the support trolley.

[0013] According to the porous frame bridge movable formwork device described in the first aspect embodiment of the present application, the formwork mechanism includes a second adjusting component, one end of the side form is hinged to the top plate, and the other end of the side form is hinged to the second adjusting component, and the second adjusting component is telescopically adjustable and used to adjust the opening and closing of the telescopic side form.

[0014] According to the porous frame bridge movable formwork device described in the first aspect embodiment of the present application, one end of the side form is hinged to the top plate by a hinge.

[0015] According to the porous frame bridge movable formwork device described in the first aspect embodiment of the present application, the second adjustment component includes an adjustable screw and a steel pipe, one end of the steel pipe is hinged to the other end of the side form, one end of the adjustable screw is adjustably connected to the other end of the steel pipe, and the other end of the adjustable screw is hinged to the support trolley.

[0016] According to the porous frame bridge movable formwork device described in the first aspect embodiment of the present application, universal wheels are provided at the bottom of the support trolley.

[0017] According to the porous frame bridge movable formwork device described in the first aspect of the embodiment of the present application, the support trolley includes a steel support, and the steel support is used as the skeleton of the formwork mechanism.

[0018] According to the movable formwork device for a porous frame bridge described in the first aspect of the embodiment of the present application, the universal wheel is arranged at the bottom of the steel support, and the jacking mechanism acts on the steel support.

[0019] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present application is further described below with reference to the accompanying drawings and embodiments;

[0021] Figure 1 This is a schematic diagram of a mobile state of an embodiment of the present application;

[0022] Figure 2 This is a schematic diagram of the embodiment of the present application in a jacking state;

[0023] Figure 3 This is a schematic diagram of an embodiment of the present application in an installed and fixed state;

[0024] Figure 4 A schematic diagram of setting tension bolts in an installation and fixing state of an embodiment of the present application;

[0025] Figure 5 This is a construction diagram of an embodiment of the present application;

[0026] Figure 6 This is a schematic diagram of the structure of the support component of an embodiment of the present application;

[0027] Figure 7 This is a schematic diagram of the template structure of an embodiment of the present application.

[0028] Reference numerals:

[0029] 100, bracket trolley; 110, universal wheel; 120, steel bracket;

[0030] 200, lifting mechanism; 210, hydraulic lifting component; 220, supporting component; 221, first adjusting component; 222, pad;

[0031] 300, formwork mechanism; 310, top plate; 320, side form; 330, second adjustment assembly; 331, adjustable screw; 332, steel pipe; 340, hinge;

[0032] 400. Tension bolts. DETAILED DESCRIPTION

[0033] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0034] In the description of the present application, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0035] In the description of this application, "several" means one or more, "more" means at least two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0036] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application after combining the specific content of the technical solution.

[0037] Reference Figures 1 to 7 The porous frame bridge movable formwork device of the first aspect embodiment of the present application is applied to the construction of frame bridges. The porous frame bridge movable formwork device includes a support trolley 100, a lifting mechanism 200 and a formwork mechanism 300.

[0038] The lifting mechanism 200 is arranged on the support trolley 100, and the lifting mechanism 200 is suitable for lifting the support trolley 100 to a preset height; the template mechanism 300 is arranged on the support trolley 100, and the template mechanism 300 includes a top plate 310 and a side mold 320, and the side mold 320 is hingedly arranged on both sides of the top plate 310 so that each side mold 320 can be opened and closed to a preset position.

[0039] It can be understood that the porous frame bridge movable formwork device of the present application is suitable for a porous or single-hole frame bridge that first constructs the foundation and the wall body and finally constructs the top plate 310. The support trolley 100 is movable, so that the jacking mechanism 200 and the formwork mechanism 300 can be set using the support trolley 100 as a supporting base and a movable base. The top plate 310 formwork is customized according to the structural characteristics of the frame bridge, and the formwork and the support are designed as an integrated whole. The bottom of the support is integrated with a reverse jacking mechanism 200 to realize the overall rise and fall of the support, so that the openable side form 320 can be used for concrete construction.

[0040] In some embodiments, the width of the top plate 310 is consistent with the width of the cross-sectional section of the top plate 310 of the single-span frame bridge, and the length is the construction length of each section of the frame bridge, so that the concrete structure formed by installing the end form of the top plate 310 and pouring concrete meets the design requirements.

[0041] Reference Figures 1 to 7 In the porous frame bridge movable formwork device of the first aspect of the present application, the support trolley 100 is moved to the construction position as a supporting base, and the top plate 310 is placed at a preset height by using the jacking mechanism 200. By setting the side form 320 as a retractable structure, the porous frame bridge can be fitted and the construction can be completed. After the construction is completed, the jacking mechanism 200 and the formwork mechanism 300 are reset and can be reused, saving work hours and reducing the cost of the formwork.

[0042] In some embodiments of the present application, the jacking mechanism 200 includes a hydraulic jacking component 210 and a support component 220. The hydraulic jacking component 210 is used to raise and lower the support trolley 100, and the support component 220 is suitable for supporting the support trolley 100 when the support trolley 100 is at a preset height. It can be understood that the multi-point control is realized by hydraulic drive, pressure and displacement closed-loop automatic control, and the intelligent control synchronous jacking hydraulic system is widely used in highway bridge maintenance and replacement of rubber bearings, overpass lifting, inland river bridge lifting, equipment lifting, deviation correction, etc.

[0043] In some embodiments of the present application, the hydraulic lifting component 210 includes a plurality of jacks and an electronic control component, the electronic control component is connected to each jack, and the electronic control component is configured as a closed-loop automatic control method based on pressure and displacement to control each jack. It can be understood that the jacks are installed at the bottom of the support trolley 100, two are installed in each cross section, and the jacks and the support trolley 100 are fixed to the support trolley 100 through a steel pad 222 and a through-type steel plate, and multiple jacks are synchronously lifted through an intelligent control synchronous lifting hydraulic system.

[0044] In some embodiments, the number, specifications and spacing of the jacks are determined based on the weight of the entire device.

[0045] In some embodiments, the hydraulic pump station in the system uses a switch valve to control the flow rate, and relies on adjusting the switching frequency of the switch valve to change the flow rate, so as to achieve the purpose of continuously adjusting the output flow rate of the oil pump. It is equipped with appropriate electronic control components to form a pressure and displacement closed-loop control, so that each hydraulic jack can be accurately controlled to synchronize during lifting and lowering, and the load can be balanced during the weighing process.

[0046] In some embodiments, as a lifting power device of the support trolley 100, the hydraulic lifting component 210 is mainly used to lift the template to the design elevation of the top plate 310 as a whole after the trolley moves to the construction position of the top plate 310, and then convert the bottom adjustable support as the support for the construction of the top plate 310. After the construction of the top plate 310 is completed, the support can be temporarily supported by a jack, and the support length can be adjusted to be higher than the universal wheel 110, and then the jack is synchronously retracted to allow the universal wheel 110 on the support to touch the ground, thereby realizing the movement of the support.

[0047] In some embodiments of the present application, the support component 220 includes a first adjustment component 221 and a pad 222. The first adjustment component 221 is adjustably arranged at the bottom of the support trolley 100, and the pad 222 is arranged at the bottom of the first adjustment component 221. The first adjustment component 221 is used to adjust the relative interval between the pad 222 and the bottom of the support trolley 100. It can be understood that the first adjustment component 221 is mainly used for the main support of the top plate 310 concrete pouring, which can reduce the number of jacks and prevent the jacks from being damaged due to overload or imbalance during the construction process.

[0048] In some embodiments, the first adjustment component 221 is made of commonly used steel on the market, and the bottom screw, hexagonal bolt, annular pad 222 and the steel pipe 332 are matched according to the specifications. The bottom steel plate is used as the pad 222 mainly to disperse the top load, and the thickness should not be less than 1 cm. In some embodiments, the number and spacing are determined according to the calculation of the dead load and construction load of the top plate 310.

[0049] In some embodiments of the present application, the template mechanism 300 includes a second adjustment component 330, one end of the side mold 320 is hinged to the top plate 310, and the other end of the side mold 320 is hinged to the second adjustment component 330. The second adjustment component 330 is telescopically adjustable and is used to adjust the opening and closing of the telescopic side mold 320. It can be understood that the telescopically adjustable side mold 320 is composed of two parts: the side mold 320 plate and the second adjustment component 330. The side mold 320 is customized according to the variable cross-section of the frame bridge, and the second adjustment component 330 is suitable for adjusting the swing of the side mold 320 plate to achieve opening and closing.

[0050] In some embodiments, the second adjustment assembly 330 may be configured to include but not limited to a connecting rod transmission mechanism, a cam transmission mechanism, and a crank slider mechanism, so that the second adjustment assembly 330 is used to drive the side mold 320 to move around its hinge.

[0051] In some embodiments of the present application, one end of the side mold 320 is hinged to the top plate 310 via a hinge 340. It is understandable that one side of the side mold 320 is connected to the top plate 310 via the hinge 340, which can facilitate the opening and closing operation and ensure the strength of the connection. A hinge is installed at the other end to connect to the second adjustment component 330. Through the optimized design of the hinge 340, the hinge and the telescopic rod, the side mold 320 can be opened and closed freely, and the device will not be blocked when moving.

[0052] In some embodiments of the present application, the second adjustment component 330 includes an adjustable screw 331 and a steel pipe 332, one end of the steel pipe 332 is hinged to the other end of the side mold 320, one end of the adjustable screw 331 is adjustably connected to the other end of the steel pipe 332, and the other end of the adjustable screw 331 is hinged to the support trolley 100. It can be understood that the adjustable screw 331 and the steel pipe 332 form a retractable steel pipe 332, one side of the retractable steel pipe 332 is connected to the side mold 320, and the other side is connected to the bottom of the steel frame, and the connection method is mainly hinged. The overall length of the retractable steel pipe 332 is adjusted by rotating the large hexagonal bolt on the adjustable screw 331 to achieve the opening and closing of the side mold 320. When the skeleton trolley needs to move, the length of the steel pipe 332 is shortened by rotating the large hexagonal bolt, and the side mold 320 converges inward. When the top plate 310 needs to be constructed, the length of the steel pipe 332 is increased, and the side formwork 320 is exaggerated outwards to be close to the frame bridge wall.

[0053] In some embodiments of the present application, a universal wheel 110 is provided at the bottom of the support trolley 100. It is understandable that the universal wheel 110 is installed at the bottom of the integral side mold 320 and is used when the mold is moved. Further, based on the setting of the universal wheel 110, the support trolley 100 is used as a supporting frame and moving tool of the mold device, which can reduce the time for installing, disassembling and transferring the top plate 310 mold and the support system.

[0054] In some embodiments of the present application, the support trolley 100 includes a steel support 120, which is used as the skeleton of the template mechanism 300, and the universal wheel 110 is set at the bottom of the steel support 120, and the jacking mechanism 200 acts on the steel support 120. It can be understood that the steel support 120, as the skeleton of the template and the support of the support trolley 100, is mainly welded into a whole by H-shaped steel, angle steel, steel pipe 332 and other steel sections, and the length is consistent with the construction length of the single-section top plate 310, and the height is determined comprehensively according to the net height of the frame bridge, the height of the adjustable bottom journey, etc., and the width is not greater than the horizontal part of the top plate 310. The specifications and spacing of the steel are determined according to the calculation of the upper permanent load and temporary load.

[0055] Reference Figures 1 to 7The method for constructing a porous frame bridge of the second embodiment of the present application may be a method for constructing a porous frame bridge using the porous frame bridge movable formwork device of the first embodiment of the present application, and the method for constructing a porous frame bridge comprises the following steps:

[0056] After the concrete construction of the frame bridge wall is completed, the device is moved to the top plate 310 construction position;

[0057] Lift the support trolley 100 to the designed top plate 310 height through the lifting mechanism 200;

[0058] Open the side forms 320 on both sides until they are close to the frame bridge wall, and install the tension bolts 400 of the side forms 320;

[0059] Tie up the top plate 310 steel bars, install the top plate 310 end formwork and pour concrete;

[0060] After the concrete construction of the next section of the frame bridge wall is completed and the top plate 310 concrete is cured to the required strength, the tension bolts 400 of the side form 320 are removed;

[0061] Lower the support trolley 100 through the lifting mechanism 200, and adjust the side mold 320 to move closer to the support;

[0062] Repeat the above steps until the construction is completed.

[0063] In some embodiments of the present application, the method of lifting the support trolley 100 to the designed height of the top plate 310 by the lifting mechanism 200 includes:

[0064] Through intelligent control of the synchronous lifting hydraulic system, the jack at the bottom of the support is controlled to lift the support trolley 100 to the designed top plate height of 310;

[0065] Adjust the support component 220 at the bottom of the bracket to the ground, and after confirming that it is tight, control all jacks to retract to a stress-free state through the intelligent control synchronous lifting hydraulic system;

[0066] Check the elevation of the top plate 310 and adjust the elevation deviation through the bottom adjustable support component 220.

[0067] Among them, it can be understood that the use of hydraulic drive, pressure and displacement closed-loop automatic control to achieve multi-point control, intelligent control synchronous jacking hydraulic system is widely used in highway bridge maintenance and replacement of rubber bearings and overpass lifting, inland bridge lifting, equipment lifting, correction, etc. In this system, the hydraulic pump station uses a switch valve to control the flow rate, and relies on adjusting the switching frequency of the switch valve to change the flow rate to achieve the purpose of making the output flow of the oil pump continuously adjustable. With appropriate electronic control components, the pressure and displacement closed-loop control can be formed, which can accurately control the synchronization of each hydraulic jack during lifting and lowering, and the load balance during the weighing process.

[0068] In some embodiments of the present application, the method of opening the side molds 320 on both sides until they are close to the wall of the frame bridge includes: opening the side molds 320 on both sides until they are close to the wall of the frame bridge through adjustable telescopic rods dedicated to the side molds 320.

[0069] In some embodiments of the present application, the method of lowering the support trolley 100 by the lifting mechanism 200 and adjusting the side mold 320 to move closer to the support includes:

[0070] The intelligent control synchronous lifting hydraulic system is used to control the jack at the bottom of the bracket to lift it to the ground, and after adjusting the height of the bottom support component 220 to be higher than the universal wheel 110, the overall stability of the bracket is checked;

[0071] The intelligent control synchronous lifting hydraulic system controls the jack at the bottom of the bracket to retract until the universal wheel 110 touches the ground, and adjusts the telescopic rod dedicated to the side mold 320 so that the side mold 320 moves closer to the bracket.

[0072] A movable dynamic template device for a porous frame bridge of the present application includes a movable support trolley 100, a lifting mechanism 200 with an intelligent control synchronous lifting hydraulic system, and a retractable top plate 310 mechanism. The movable support trolley 100 includes a steel support 120, a jack, a bottom adjustable support component 220 and a universal wheel 110, which is a supporting skeleton and a moving tool of the template mechanism 300. The retractable top plate 310 mechanism includes a top plate 310 and a retractable and adjustable side mold 320. The width of the fixed top plate 310 is consistent with the width of the cross-sectional section of the top plate 310 of the single-hole frame bridge, and the length is the construction length of each section of the frame bridge. The side mold 320 is customized according to the variable cross-section of the frame bridge, one side is connected to the top plate 310 by a hinge 340, and can be opened and closed, and the other side end is installed with a hinge and connected to a retractable steel pipe 332. The movable dynamic template device for a porous frame bridge effectively saves the installation and disassembly time of the template and the support, and improves the construction efficiency. It saves a lot of investment in steel pipe 332 brackets. It also reduces the investment in large construction machinery such as cranes, and can still realize the installation and disassembly of templates under limited conditions of the construction site.

[0073] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0074] The embodiments of the present application are described in detail above in conjunction with the accompanying drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present application.

Claims

1. A movable formwork device for a porous frame bridge, characterized in that: include: Support trolley; A lifting mechanism is arranged on the support trolley, and the lifting mechanism is suitable for lifting the support trolley to a preset height; The template mechanism is arranged on the support trolley, and the template mechanism includes a top plate and side molds. The side molds are hingedly arranged on both sides of the top plate so that each side mold can be opened and closed to a preset position.

2. The movable formwork device for a porous frame bridge according to claim 1 is characterized in that: The lifting mechanism comprises a hydraulic lifting component and a supporting component, wherein the hydraulic lifting component is used to raise and lower the support trolley, and the supporting component is suitable for supporting the support trolley when the support trolley is at a preset height.

3. The movable formwork device for a porous frame bridge according to claim 2 is characterized in that: The hydraulic lifting component includes a plurality of jacks and an electronic control component, wherein the electronic control component is connected to each of the jacks, and the electronic control component is configured to control each of the jacks in a closed-loop automatic control mode based on pressure and displacement.

4. The movable formwork device for a porous frame bridge according to claim 2 is characterized in that: The supporting component includes a first adjusting component and a pad, wherein the first adjusting component is adjustably arranged at the bottom of the support trolley, and the pad is arranged at the bottom of the first adjusting component, and the first adjusting component is used to adjust the relative distance between the pad and the bottom of the support trolley.

5. The movable formwork device for a porous frame bridge according to claim 1 is characterized in that: The template mechanism includes a second adjusting component, one end of the side mold is hinged to the top plate, and the other end of the side mold is hinged to the second adjusting component. The second adjusting component is telescopically adjustable and is used to adjust the opening and closing of the telescopic side mold.

6. The movable formwork device for a porous frame bridge according to claim 5 is characterized in that: One end of the side mold is hinged to the top plate through a hinge.

7. The movable formwork device for a porous frame bridge according to claim 5 is characterized in that: The second adjustment component includes an adjustable screw and a steel pipe, one end of the steel pipe is hinged to the other end of the side mold, one end of the adjustable screw is adjustably connected to the other end of the steel pipe, and the other end of the adjustable screw is hinged to the support trolley.

8. The movable formwork device for a porous frame bridge according to claim 1 is characterized in that: The bottom of the support trolley is provided with universal wheels.

9. The movable formwork device for a porous frame bridge according to claim 8 is characterized in that: The support trolley comprises a steel support, and the steel support is used as a skeleton of the template mechanism.

10. The movable formwork device for a porous frame bridge according to claim 9 is characterized in that: The universal wheel is arranged at the bottom of the steel support, and the lifting mechanism acts on the steel support.

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