Cast-in-place beam sliding system and construction method
By designing the cast-in-place beam slip system, using components such as sliding tracks and connecting frames, safe sliding and support of cast-in-place beams in narrow mountainous areas is achieved, solving the difficulty of construction and high safety risks in traditional construction methods. The high cost problem significantly reduces construction costs and complexity.
Patent Information
- Application Number
- CN202411286208.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2024-06-01
- Filing Date
- 2024-09-13
- Publication Date
- 2024-12-06
AI Technical Summary
In narrow V-shaped valley areas in mountainous areas, traditional cast-in-place beam construction methods have problems such as high construction difficulty, high safety risks and high cost. Especially when prefabricated box beams are slipped, floor-standing brackets are required, which increases the construction complexity and cost.
A cast-in-place beam slip system is designed, including parallel sliding tracks, connecting frames, lifting units, walking units, reinforcement cables and support rods. Through the synergy of these components, the safe sliding of cast-in-place beams is achieved and Support avoids the need to set up floor brackets, simplifies construction processes and reduces costs.
Through the cooperation of sliding tracks and connecting frames, the system realizes safe movement and support of cast-in-place beams, reduces construction costs, simplifies construction processes, and can quickly adjust the fixed cables to adapt to changes in the construction area, significantly reducing current The cost and complexity of construction of the poured beam slip.
Smart Images
Figure CN119083317A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of bridge construction, and in particular to a cast-in-place beam sliding system and a construction method. Background Art
[0002] In recent years, with the rapid development of high-speed rail construction in my country, more and more high-speed rail stations have been built in mountainous areas. The terrain of mountainous areas is complex, especially in narrow V-shaped valley areas. Traditional cast-in-place beam construction methods such as building full-floor floor-standing supports or portal supports often face problems such as difficulty in building supports, high safety risks, and high costs.
[0003] In order to solve this problem, the prior art discloses a method for sliding construction of the side form of a cast-in-place box girder, which includes the following construction steps: (1) When constructing the first hole box girder, use a jack to adjust the side form to the designed elevation and lock the jack; (2) After pouring the concrete of the first hole box girder, when the concrete reaches the demolding strength, the jack on the same side is synchronously and slowly lowered; (3) The running pulley of the movable side form is dropped onto the sliding track; (4) A second hole box girder bracket continuous with the first hole box girder is installed, and the sliding track is installed on the bracket, and the sliding tracks on the first and second hole box girder brackets are ensured to be smoothly connected; (5) The side form is dragged by a winch installed on the front pier top, and the movable side form moves forward along the track. After moving to the designed position, the dragging is stopped, the position of the movable side form is fine-tuned, and the movable side form is pushed to the designed elevation and locked by a jack; (6) The above steps are repeated to realize the sliding construction of the side form of the cast-in-place beam.
[0004] Regarding the above-mentioned related technologies, when the sliding construction of the prefabricated box girder is carried out through the track, due to the large mass of the prefabricated box girder, it is still necessary to set up some floor supports to support the track. Although the number of floor supports is reduced and the installation time of the box girder forming template is also reduced, there is still the problem of difficulty in setting up the floor supports and high cost. Summary of the invention
[0005] In order to reduce the cost of sliding construction while completing the safe sliding of cast-in-place beams, the present application provides a cast-in-place beam sliding system and construction method.
[0006] The present application provides a cast-in-place beam sliding system and construction method using the following technical solutions: In a first aspect, the present application provides a cast-in-place beam sliding system.
[0007] A cast-in-place beam sliding system, comprising: Two sets of sliding tracks arranged in parallel are used to connect with two bridge piers respectively; Two connecting frames, respectively used to be detachably fixedly connected to the two side molds, and a plurality of sliding wheels are connected to the connecting frames; The lifting unit is arranged between the bridge pier and the connecting frame, and is used to drive the connecting frame to lift so that the sliding wheel is rolled and connected to the sliding track. A walking unit is arranged on the sliding track, and the walking unit is connected to the connecting frame, and is used to drive the connecting frame to move along the setting direction of the sliding track; Two reinforcing cables are located below the sliding track, and a plurality of support rods are connected to the reinforcing cables. The support rods are connected to the sliding track, and both ends of the reinforcing cables are connected to fixed cables. The fixed cables are used to connect to bridge piers at one end away from the reinforcing cables.
[0008] By adopting the above technical scheme, a forming formwork system is first installed outside the steel bar system of the cast-in-place beam structure to form a forming cavity for the cast-in-place beam, and then concrete is poured into the forming cavity to obtain a cast-in-place beam. Then, a sliding track is erected at a preset position. After the sliding track is erected, the reinforcing cable and the fixed cable are installed and tensioned, so that the support rod abuts against the sliding track, and the connecting frame is connected to the side form in the forming formwork system. When the cast-in-place beam is cured, the end formwork is removed, and then the connecting frame is lifted to the elevation by the lifting unit, and after the sliding wheel is installed, the connecting frame is lowered until the sliding wheel is rolled and connected to the sliding track: at this time, the walking unit applies force to the connecting frame, and the connecting frame drives the cast-in-place beam and the side formwork system to move toward the installation position along the setting direction of the sliding track with the help of the sliding wheel until the beam body moves into place; then, force is applied to the connecting frame by the lifting unit so that the connecting The connecting frame is lifted, the sliding wheel is separated from the sliding track, and then the sliding wheel is removed, so that the cast-in-place beam is erected and fixed on the bridge pier, and the cast-in-place beam construction is completed; the designed cast-in-place beam sliding system provides a support path for the movement of the cast-in-place beam between the two bridge piers through the sliding track, and the connection between the side form and the sliding track can be realized through the cooperation of the connecting frame and the sliding wheel. The lifting and lowering of the beam body is facilitated by the lifting unit, and then the erection of the beam body and the upper track operation of the sliding wheel are completed. The beam body can be driven to move along the setting direction of the sliding track through the walking unit. Through the cooperation of the strengthening cable, the support rod and the fixed cable, the support of the sliding track can be achieved without setting up a ground bracket, and it is simple and fast. The change of the bridge pier connected by the fixed cable can also be quickly realized as the construction area advances, which greatly reduces the construction cost of the cast-in-place beam sliding construction.
[0009] In a specific embodiment, the sliding track includes: A lower track, both ends of which are rotatably connected to a rotating seat, the rotating axis of the lower track is vertically arranged, the rotating seat is used to be connected to the bridge pier, and the support rod passes through and is slidably connected to the lower track; The upper track is located above the lower track, the upper track is rotatably connected to the lower track, and the rotation axis of the upper track is vertically arranged, the support rod is in contact with the upper track, and the sliding wheel is rollingly connected to the upper track.
[0010] By adopting the above technical solution, the designed sliding track can facilitate the change of the position of the sliding track, and the abutment of the support rod can be achieved through the upper track.
[0011] In a specific possible implementation manner, a supporting jack is connected to the upper track, and the supporting jack is located at an end of the upper track away from the rotation connection with the lower track.
[0012] By adopting the above technical solution, the designed supporting jack can realize temporary support of the upper track after the upper track is rotated into place, thereby reducing the possibility of deformation of the upper track after unilateral force is applied.
[0013] In a specific possible implementation manner, the lifting unit includes a plurality of lifting jacks, the lifting jacks are arranged on bridge piers, and the piston rods of the lifting jacks are in contact with the connecting frame.
[0014] By adopting the above technical solution, the lifting unit is designed, and the lifting of the connecting frame can be realized through the lifting jack, thereby realizing the lifting of the beam body.
[0015] In a specific implementation scheme, the walking unit includes: A plurality of one-way sliding blocks, wherein the one-way sliding blocks are slidably connected to the upper track toward a side away from the existing box beam; A plurality of travel hydraulic cylinders, wherein the cylinder bodies of the travel hydraulic cylinders are rotatably connected to the one-way sliding block, and one end of the piston rod of the travel hydraulic cylinders is rotatably connected to the fixed support leg of the moving wheel.
[0016] By adopting the above technical solution, the designed walking unit can realize unidirectional movement of the sliding wheel along the sliding track through the cooperation of the unidirectional sliding block and the walking hydraulic cylinder.
[0017] In a specific possible implementation manner, a friction pad is provided between the one-way sliding block and the upper rail, and the friction pad is connected to the one-way sliding block.
[0018] By adopting the above technical solution, the designed friction pad can realize the unidirectional sliding of the unidirectional sliding block by increasing the friction between the unidirectional sliding block and the sliding track when the travel hydraulic cylinder applies force.
[0019] In a specific feasible implementation scheme, the one-way sliding block is connected to a telescopic cylinder, a check rod is connected to the telescopic cylinder piston rod, a plurality of insertion holes are provided on the upper rail along its long side direction, and the telescopic cylinder drives the check rod to pass through the one-way sliding block through the insertion hole.
[0020] By adopting the above technical solution, the telescopic cylinder and the check rod are designed to cooperate to achieve the one-way sliding of the one-way sliding block.
[0021] In a second aspect, the present application provides a cast-in-place beam sliding construction method.
[0022] A cast-in-place beam sliding construction method, comprising: S1: Preliminary preparation: Install the forming formwork system outside the cast-in-place beam structure reinforcement system to form a cast-in-place beam forming cavity, then pour concrete into the forming cavity to obtain a cast-in-place beam, and then set up the sliding track at the preset position. After the sliding track is set up, install and tension the reinforcing cable and the fixed cable, so that the support rod abuts against the sliding track, and connect the connecting frame with the side form in the forming formwork system; S2: Beam upper rail: After the cast-in-place beam is cured, the end formwork is removed, and then the connecting frame is lifted to the elevation by the lifting unit. After the sliding wheel is installed, the connecting frame is lowered until the sliding wheel rolls and connects to the sliding rail: S3: Beam sliding: The walking unit applies force to the connecting frame, and the connecting frame drives the cast-in-place beam and the side formwork system to move toward the installation position along the setting direction of the sliding track with the help of the sliding wheel until the beam moves into place; S4: Sinking installation: Apply force to the connecting frame through the lifting unit to lift the connecting frame, so that the sliding wheel is separated from the sliding track, and then the sliding wheel is removed, so that the cast-in-place beam is erected on the bridge pier and fixed, completing the cast-in-place beam construction.
[0023] By adopting the above technical scheme, the sliding track can provide a support path for the movement of the cast-in-place beam between the two bridge piers, the connection between the side form and the sliding track can be achieved through the connection frame and the sliding wheel, the lifting and lowering of the beam body can be achieved through the lifting unit, and then the erection of the beam body and the operation of the sliding wheel on the track are completed, and the beam body can be driven to move along the setting direction of the sliding track through the walking unit. Through the cooperation of the reinforcing cable, the support rod and the fixed cable, the support of the sliding track can be achieved without setting up a ground bracket, and it is simple and fast. The change of the bridge pier connected by the fixed cable can also be quickly realized as the construction area advances, which greatly reduces the construction cost of the sliding construction of the cast-in-place beam.
[0024] In a specific implementation scheme, the sliding track installed in step S1 includes: A lower track, both ends of which are rotatably connected to a rotating seat, the rotating axis of the lower track is vertically arranged, the rotating seat is used to be connected to the bridge pier, and the support rod passes through and is slidably connected to the lower track; The upper track is located above the lower track, the upper track is rotatably connected to the lower track, and the rotation axis of the upper track is vertically arranged, the support rod is in contact with the upper track, and the sliding wheel is rollingly connected to the upper track.
[0025] By adopting the above technical solution, the position change of the sliding track can be easily realized, and the abutment of the support rod can be achieved through the upper track.
[0026] In a specific embodiment, it also includes: S5: Track displacement: After unlocking the upper track, apply force to the upper track to rotate it to the next adjacent construction position, then release the rotating seat close to one end of the installed beam body, so that the lower track rotates to the next adjacent construction position and then fixes it, and then repeat steps S1-S4 until the construction of all cast-in-place beams is completed.
[0027] By adopting the above technical solution, the movement of the sliding track between two adjacent construction areas can be achieved through the cooperation of the upper track, the lower track and the rotating seat.
[0028] In summary, the present application includes at least one of the following beneficial technical effects: 1. The designed cast-in-place beam sliding system provides a support path for the movement of cast-in-place beams between two bridge piers through the sliding track. The connection between the side form and the sliding track can be achieved through the connection frame and the sliding wheel. The lifting and lowering of the beam body can be achieved through the lifting unit, thereby completing the erection of the beam body and the operation of the sliding wheel on the track. The beam body can be driven to move along the setting direction of the sliding track through the walking unit. Through the cooperation of the strengthening cable, the support rod and the fixed cable, the support of the sliding track can be achieved without setting up a ground bracket. It is simple and fast, and the change of the bridge pier connected by the fixed cable can be quickly realized as the construction area advances, which greatly reduces the construction cost of the cast-in-place beam sliding construction.
[0029] 2. The designed cast-in-place beam sliding system can facilitate the position change of the sliding track and realize the abutment of the support rod through the upper track.
[0030] 3. The designed cast-in-place beam sliding system can realize the unidirectional sliding of the unidirectional sliding block by increasing the friction between the unidirectional sliding block and the sliding track when the travel hydraulic cylinder applies force. BRIEF DESCRIPTION OF THE DRAWINGS
[0031] Figure 1It is a structural schematic diagram of the cast-in-place beam sliding system of an embodiment of the present application.
[0032] Figure 2 is Figure 1 Schematic diagram of the structure after adding reinforcing cables, support rods and fixing cables on the basis of the structure.
[0033] Figure 3 yes Figure 2 Schematic diagram of the three-dimensional structure.
[0034] Figure 4 yes Figure 2 Enlarged view of part A in the middle.
[0035] Figure 5 yes Figure 3 A cross-sectional view is used to illustrate that the one-way sliding block achieves one-way sliding through the friction pad.
[0036] Figure 6 It is a partial structural diagram of the sliding track and the traveling unit in the embodiment of the present application, which is used to illustrate that the one-way sliding block realizes one-way sliding through the telescopic cylinder and the check rod.
[0037] Figure 7 It is a schematic diagram of the structure of the sliding track, sliding wheels and walking unit in the embodiment of the present application.
[0038] Figure 8 yes Figure 7 Schematic diagram of the three-dimensional structure.
[0039] Explanation of the reference numerals: 01, bridge pier; 02, side form; 1, sliding track; 11, lower track; 12, rotating seat; 13, upper track; 131, insertion hole; 14, supporting jack; 2, connecting frame; 3, sliding wheel; 4, lifting unit; 41, lifting hydraulic cylinder; 5, walking unit; 51, one-way sliding block; 52, walking hydraulic cylinder; 53, friction pad; 54, telescopic cylinder; 55, check rod; 6, reinforcing cable; 7, support rod; 8, fixing cable. DETAILED DESCRIPTION
[0040] The following is combined with Figure 1-8 This application is described in further detail.
[0041] The embodiments of the present application disclose a cast-in-place beam sliding system and a construction method.
[0042] In a first aspect, an embodiment of the present application discloses a cast-in-place beam sliding system.
[0043] Reference Figure 1A cast-in-place beam sliding system includes a sliding track 1, a connecting frame 2 and a sliding wheel 3. There are two groups of sliding tracks 1, and the two groups of sliding tracks 1 are arranged in parallel on both sides of the bridge pier 01, and both ends of the sliding track 1 are connected to the bridge pier 01. There are two connecting frames 2, and the two connecting frames 2 are respectively located on the outside of the side form 02 of the cast-in-place beam forming formwork system, and the connecting frame 2 is detachably fixed to the side form 02 by bolts; there are multiple sliding wheels 3, and the multiple sliding wheels 3 are fixed to the connecting frame 2 by fixed legs, and the sliding wheels 3 can be rollingly connected to the sliding track 1.
[0044] Reference Figure 2 In order to reduce the cost of sliding construction while completing the safe sliding of the cast-in-place beam, the cast-in-place beam sliding system also includes a reinforcing cable 6 and a support rod 7. There are two reinforcing cables 6, and the reinforcing cables 6 are located under the sliding track 1. There are multiple support rods 7, and the support rods 7 are welded and fixed to the reinforcing cables 6, and the support rods 7 are in contact with the sliding track 1. In order to reduce the possibility of deflection of the support rods 7, the support rods 7 extend into the sliding track 1; in order to facilitate the tensioning and fixing of the reinforcing cables 6, both ends of the reinforcing cables 6 are integrally connected with fixed cables 8, and the end of the fixed cables 8 away from the reinforcing cables 6 is wrapped around the bridge pier 01; through the cooperation of the reinforcing cables 6, the support rods 7 and the fixed cables 8, the support of the sliding track 1 can be achieved without setting up a ground bracket, and it is simple and fast. It can also quickly realize the change of the bridge pier 01 to which the fixed cables 8 are sleeved as the construction area advances, greatly reducing the construction cost of the cast-in-place beam sliding construction.
[0045] Reference Figure 2 and Figure 3 In order to facilitate the lifting of the beam body so as to realize the erection of the beam body on the bridge pier 01 or to realize the connection of the sliding wheel 3 to the sliding track 1, the cast-in-place beam sliding system also includes a lifting unit 4, which is arranged between the bridge pier 01 and the connecting frame 2, and is used to drive the connecting frame 2 to lift; the lifting unit 4 includes a plurality of lifting jacks, which are arranged on the bridge pier 01, and one end of the piston rod of the lifting jack is bolted to the connecting frame 2.
[0046] Reference Figure 4 In order to drive the beam body to move along the setting direction of the sliding track 1, the cast-in-place beam sliding system also includes a walking unit 5. The number of the walking units 5 is two groups. The walking units 5 are set on the sliding track 1, and the walking units 5 are connected to the connecting frame 2; the walking unit 5 includes a plurality of one-way sliding blocks 51 and a plurality of walking hydraulic cylinders 52. The one-way sliding block 51 is slidably connected to the sliding track 1 toward the side away from the installed box beam. One end of the cylinder body of the walking hydraulic cylinder 52 is hinged to the top wall of the one-way sliding block 51, and one end of the piston rod of the walking hydraulic cylinder 52 is hinged to the fixed support leg, and the walking hydraulic cylinder 52 is located on the back side of the forward direction of the fixed support leg.
[0047] Reference Figure 4 and Figure 5 In some embodiments, a friction pad 53 is provided between the one-way sliding block 51 and the sliding track 1. The friction pad 53 and the one-way sliding block 51 are fixed by screws or bonding. When the piston rod of the traveling hydraulic cylinder 52 is extended, the piston rod applies force to the one-way sliding block 51 to generate friction between the friction pad 53 and the sliding track 1, and then generates thrust in the reverse direction to realize the advancement of the fixed bracket. When the piston rod of the traveling hydraulic cylinder 52 is retracted, the one-way sliding block 51 drives the friction pad 53 to move toward the side away from the sliding track 1, so the friction between the two is small, so that the one-way sliding block 51 moves along the direction of the sliding track 1.
[0048] Reference Figure 4 and Figure 6 In some other embodiments, a telescopic cylinder 54 is bolted to the one-way sliding block 51, and a check rod 55 is connected to the piston rod of the telescopic cylinder 54 through a bracket. A plurality of insertion holes 131 are provided on the sliding track 1, and the plurality of insertion holes 131 are provided along the traveling direction of the sliding track 1. The telescopic cylinder 54 drives the check rod 55 to pass through the one-way sliding block 51 through the insertion hole 131. When the piston rod of the traveling hydraulic cylinder 52 is extended, the check rod 55 is set through the insertion hole 131.
[0049] Reference Figure 7 and Figure 8 In order to facilitate the position change of the sliding track 1 and realize the force and anti-deflection of the support rod 7, the sliding track 1 includes a lower track 11, a rotating seat 12 and an upper track 13. There are two rotating seats 12. The two rotating seats 12 are rotatably connected to the two ends of the long side of the lower track 11 respectively. The rotation axis of the lower track 11 is vertically arranged, and the rotating seat 12 is detachably fixedly connected to the bridge pier 01. The support rod 7 is arranged through the lower track 11, and the support rod 7 is slidably connected to the lower track 11.
[0050] Reference Figure 7 and Figure 8 The upper track 13 is located above the lower track 11, and the upper track 13 is rotatably connected to the lower track 11 through a rotating shaft, and the rotation axis of the upper track 13 and the lower track 11 is coaxially arranged with the rotation axis of the lower track 11. The support rod 7 passes through the lower track 11 and abuts against the upper track 13, the sliding wheel 3 is rollingly connected to the upper track 13, and the one-way sliding block 51 is slidably connected to the upper track 13.
[0051] Reference Figure 7 and Figure 8In order to temporarily support the upper rail 13 after the upper rail 13 rotates and reduce the possibility of deformation of the upper rail 13 due to unilateral force for too long, a support jack 14 is bolted to the upper rail 13. The support jack 14 is located at one end of the upper rail 13 away from the rotation connection with the lower rail 11, and the support jack 14 is staggered with the lower rail 11.
[0052] The implementation principle of a cast-in-place beam sliding system in an embodiment of the present application is as follows: first, a forming formwork system is installed outside the cast-in-place beam structure reinforcement system to form a cast-in-place beam forming cavity, and then concrete is poured into the forming cavity to obtain a cast-in-place beam, and then a sliding track 1 is erected at a preset position. After the sliding track 1 is erected, the reinforcing cable 6 and the fixing cable 8 are installed and tensioned, so that the support rod 7 is abutted against the sliding track 1, and the connecting frame 2 is connected to the side form 02 in the forming formwork system; when the cast-in-place beam is cured, the end formwork is removed, and then the connecting frame is lifted by the lifting unit 4. Frame 2 is moved to the elevation, and after the sliding wheel 3 is installed, the connecting frame 2 is lowered until the sliding wheel 3 is rolled and connected to the sliding track 1: at this time, the walking unit 5 applies force to the connecting frame 2, and the connecting frame 2 drives the cast-in-place beam and the side formwork 02 system to move toward the installation position along the setting direction of the sliding track 1 with the help of the sliding wheel 3, until the beam body moves into place; then the lifting unit 4 applies force to the connecting frame 2, so that the connecting frame 2 is lifted, the sliding wheel 3 is separated from the sliding track 1, and then the sliding wheel 3 is removed, so that the cast-in-place beam is erected on the bridge pier 01 and fixed, completing the cast-in-place beam construction.
[0053] In a second aspect, an embodiment of the present application discloses a cast-in-place beam sliding construction method, based on the cast-in-place beam sliding system disclosed in the first aspect of the embodiment of the present application, comprising: S1: Preliminary preparation: Install a forming formwork system outside the cast-in-place beam structure reinforcement system to form a cast-in-place beam forming cavity, then pour concrete into the forming cavity to obtain a cast-in-place beam, and then set up a sliding track 1 at a preset position. After the sliding track 1 is set up, install and tension the reinforcing cable 6 and the fixing cable 8, so that the support rod 7 abuts against the sliding track 1, and connect the connecting frame 2 to the side form 02 in the forming formwork system; S2: Beam upper rail: After the cast-in-place beam is cured, the end formwork is removed, and then the connecting frame 2 is lifted to the elevation by the lifting unit 4. After the sliding wheel 3 is installed, the connecting frame 2 is lowered until the sliding wheel 3 is rolled and connected to the sliding rail 1: S3: beam body sliding: the walking unit 5 applies force to the connecting frame 2, and the connecting frame 2 drives the cast-in-place beam and the side form 02 system to move toward the installation position along the setting direction of the sliding track 1 with the help of the sliding wheel 3 until the beam body moves into place; S4: Sinking installation: Apply force to the connection frame 2 through the lifting unit 4, so that the connection frame 2 is lifted, the sliding wheel 3 is separated from the sliding track 1, and then the sliding wheel 3 is removed, so that the cast-in-place beam is erected on the bridge pier 01 and fixed, and the cast-in-place beam construction is completed; S5: Track displacement: After unlocking the upper track 13, force is applied to the upper track 13 to rotate the upper track 13 to the next adjacent construction position, and then the rotating seat 12 close to one end of the installed beam body is released to rotate the lower track 11 to the next adjacent construction position and then fix it, and then repeat steps S1-S4 until the construction of all cast-in-place beams is completed.
[0054] By applying the cast-in-place beam sliding construction method disclosed in the second aspect of the embodiment of the present application, the sliding track 1 is used to provide a support path for the movement of the cast-in-place beam between the two bridge piers 01. The connection between the side form 02 and the sliding track 1 can be achieved through the connection frame 2 and the sliding wheel 3. The lifting unit 4 is used to facilitate the lifting of the beam body, thereby completing the erection of the beam body and the track-on operation of the sliding wheel 3. The walking unit 5 can drive the beam body to move along the setting direction of the sliding track 1. Through the cooperation of the reinforcing cable 6, the support rod 7 and the fixed cable 8, the sliding track 1 can be supported without setting up a ground bracket. It is simple and fast, and the bridge pier 01 connected by the fixed cable 8 can be quickly changed as the construction area advances, which greatly reduces the construction cost of the cast-in-place beam sliding construction.
[0055] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A cast-in-place beam sliding system, characterized in that: include: Two sets of sliding tracks (1) arranged in parallel, respectively used to connect with two bridge piers (01); Two connecting frames (2), respectively used for being detachably fixedly connected to the two side molds (02), and a plurality of sliding wheels (3) are connected to the connecting frames (2); A lifting unit (4) is arranged between the bridge pier (01) and the connecting frame (2) and is used to drive the connecting frame (2) to lift and lower so that the sliding wheel (3) is rollingly connected to the sliding track (1) A walking unit (5) is arranged on the sliding track (1), and the walking unit (5) is connected to the connecting frame (2), and is used to drive the connecting frame (2) to move along the setting direction of the sliding track (1); Two reinforcing cables (6) are located below the sliding track (1), and a plurality of support rods (7) are connected to the reinforcing cables (6). The support rods (7) are connected to the sliding track (1), and both ends of the reinforcing cables (6) are connected to fixing cables (8). The fixing cables (8) are used to connect to the bridge pier (01) at one end away from the reinforcing cables (6).
2. The cast-in-place beam sliding system according to claim 1, characterized in that: The sliding track (1) comprises: A lower track (11), both ends of the lower track (11) are rotatably connected to a rotating seat (12), the rotating axis of the lower track (11) is vertically arranged, the rotating seat (12) is used to connect with the bridge pier (01), and the support rod (7) passes through and is slidably connected with the lower track (11); An upper track (13) is located above the lower track (11), the upper track (13) is rotatably connected to the lower track (11), and the rotation axis of the upper track (13) is vertically arranged, the support rod (7) is in contact with the upper track (13), and the sliding wheel (3) is rollingly connected to the upper track (13).
3. The cast-in-place beam sliding system according to claim 2, characterized in that: The upper rail (13) is connected to a supporting jack (14), and the supporting jack (14) is located at one end of the upper rail (13) away from the rotation connection with the lower rail (11).
4. The cast-in-place beam sliding system according to claim 2, characterized in that: The lifting unit (4) comprises a plurality of lifting jacks, the lifting jacks being arranged on the bridge pier (01), and the piston rods of the lifting jacks being in contact with the connecting frame (2).
5. The cast-in-place beam sliding system according to claim 2, characterized in that: The walking unit (5) comprises: A plurality of one-way sliding blocks (51), wherein the one-way sliding blocks (51) are slidably connected to the upper rail (13) toward a side away from the existing box beam; A plurality of travel hydraulic cylinders (52), wherein the cylinder bodies of the travel hydraulic cylinders (52) are rotatably connected to the one-way sliding block (51), and one end of the piston rod of the travel hydraulic cylinder (52) is rotatably connected to the fixed support foot of the moving wheel.
6. The cast-in-place beam sliding system according to claim 5, characterized in that: A friction pad (53) is provided between the one-way sliding block (51) and the upper rail (13), and the friction pad (53) is connected to the one-way sliding block (51).
7. The cast-in-place beam sliding system according to claim 5, characterized in that: The one-way sliding block (51) is connected to a telescopic cylinder (54), a check rod (55) is connected to the piston rod of the telescopic cylinder (54), a plurality of insertion holes (131) are provided on the upper rail (13) along its long side direction, and the telescopic cylinder (54) drives the check rod (55) to pass through the one-way sliding block (51) via the insertion holes (131).
8. A cast-in-place beam sliding construction method, using the cast-in-place beam sliding system according to any one of claims 1 to 7, characterized in that: include: S1: Preliminary preparation: installing a forming formwork system outside the steel reinforcement system of the cast-in-place beam structure to form a cast-in-place beam forming cavity, then pouring concrete into the forming cavity to obtain a cast-in-place beam, and then erecting a sliding track (1) at a preset position. After the sliding track (1) is erected, the reinforcing cable (6) and the fixing cable (8) are installed and tensioned, so that the support rod (7) is in contact with the sliding track (1), and the connecting frame (2) is connected to the side form (02) in the forming formwork system; S2: Beam upper rail: After the cast-in-place beam is cured, the end formwork is removed, and then the connecting frame (2) is lifted to the elevation by the lifting unit (4). After the sliding wheel (3) is installed, the connecting frame (2) is lowered until the sliding wheel (3) is rolled and connected to the sliding rail (1): S3: beam body sliding: the walking unit (5) applies force to the connecting frame (2), and the connecting frame (2) drives the cast-in-place beam and the side form (02) system to move toward the installation position along the setting direction of the sliding track (1) with the help of the sliding wheel (3) until the beam body moves into place; S4: Sinking installation: A force is applied to the connection frame (2) through the lifting unit (4), so that the connection frame (2) is lifted, and the sliding wheel (3) is separated from the sliding track (1). Then the sliding wheel (3) is removed, so that the cast-in-place beam is erected on the bridge pier (01) and fixed, and the cast-in-place beam construction is completed.
9. A cast-in-place beam sliding construction method according to claim 8, characterized in that: The sliding track (1) installed in step S1 comprises: A lower track (11), both ends of the lower track (11) are rotatably connected to a rotating seat (12), the rotating axis of the lower track (11) is vertically arranged, the rotating seat (12) is used to connect with the bridge pier (01), and the support rod (7) passes through and is slidably connected with the lower track (11); An upper track (13) is located above the lower track (11), the upper track (13) is rotatably connected to the lower track (11), and the rotation axis of the upper track (13) is vertically arranged, the support rod (7) is in contact with the upper track (13), and the sliding wheel (3) is rollingly connected to the upper track (13).
10. A cast-in-place beam sliding construction method according to claim 9, characterized in that: Also includes: S5: track displacement: after unlocking the upper track (13), force is applied to the upper track (13) to rotate the upper track (13) to the next adjacent construction position, and then the rotating seat (12) close to one end of the installed beam body is released, so that the lower track (11) is rotated to the next adjacent construction position and then fixed, and steps S1-S4 are repeated until the construction of all cast-in-place beams is completed.