A bent cap formwork support and erecting method

Abstract

The application relates to the technical field of bent cap construction, and discloses a bent cap formwork support which is installed on a pier and comprises a supporting column and two Bailey frames, the pier is provided with a reserved hole for the supporting column to pass through, a fixing piece is installed between the two Bailey frames, a supporting rod and a supporting plate are installed on the Bailey frame, the supporting rod is used for supporting the supporting plate, a stepping plate is detachably installed on the Bailey frame, a climbing frame is installed on the abutment, and one end of the climbing frame is close to the Bailey frame. The application can achieve the effects of simple and quick erection of the whole formwork support.

Description

Technical Field

[0001] This application relates to the technical field of cap beam construction, and in particular to a cap beam formwork support and erection method. Background Technology

[0002] A cap beam is a horizontal beam installed on top of a pier in a bridge structure to support, distribute, and transfer the load of the superstructure. Its main function is to support the superstructure and transfer all loads to the substructure. After the piers are installed and formed, before pouring the cap beams on the two piers, formwork needs to be erected to create a pouring cavity.

[0003] Because the cap beam is located on top of the pier, scaffolding needs to be erected before the formwork is set up. The formwork support and formwork are then set up on the scaffolding. However, due to the influence of the terrain and the height of the pier, the erection of the scaffolding is quite troublesome. Summary of the Invention

[0004] To facilitate the erection of formwork supports and formwork, this application provides a formwork support for a cap beam and an erection method thereof.

[0005] In the first aspect, this application provides a formwork support for a cap beam, which adopts the following technical solution:

[0006] A bridge pier formwork support, installed on a bridge pier, includes a support column and two Bailey bridges. The bridge pier has a reserved hole for the support column to pass through. A fixing member is installed between the two Bailey bridges. The support column also includes a support rod and a support plate installed on the Bailey bridges. The support rod is used to support the support plate. A footboard is detachably installed on the Bailey bridge. The support also includes a climbing frame installed on the bridge abutment, with one end of the climbing frame close to the Bailey bridge.

[0007] By adopting the above technical solution, during the erection process, a crane is first used to hoist the support columns into the reserved holes, and then the Bailey bridge frame with footboards is hoisted onto the support columns. The support columns support the Bailey bridge frame. The scaffolding is then erected on the bridge abutment. The bridge abutment is relatively flat, which facilitates the erection of the climbing frame. Furthermore, the climbing frame only needs to be erected so that adults can step onto the footboards. It is not necessary to erect climbing frames around the entire bridge pier. The entire formwork support is simple and quick to erect. People stand on the Bailey bridge frame to erect the support rods and formwork. The support plate is supported on the Bailey bridge frame through the support rods. The weight of the cap beam is transferred to the Bailey bridge frame. Therefore, in addition to the ease of erecting the formwork support, the formwork is also easy to erect.

[0008] Optionally, the Bailey bridge includes a mounting frame and a reinforcing frame installed within the mounting frame. Multiple reinforcing frames are sequentially connected along the length of the Bailey bridge. The pedal is connected to a connecting block, which is inserted into the reinforcing frame. Limiting blocks are installed on opposite sides of the connecting block. When the connecting block is inserted into the reinforcing frame, the reinforcing frame is located between the two limiting blocks.

[0009] By adopting the above technical solution, the pedal is installed on the Bailey frame through the cooperation of the connecting block and the reinforcing frame. When the connecting block is inserted into the reinforcing frame, the limiting block prevents the connecting block from leaving the reinforcing frame.

[0010] Optionally, the pedal is equipped with a prefabricated guardrail, which includes multiple vertical bars, multiple horizontal bars, and multiple support bars. The side walls of the vertical bars have insertion holes for the horizontal bars to be inserted into. The vertical bars have through grooves, through which the support bars pass. Support blocks are fixedly connected to the support bars. The vertical bars have clearance grooves for the support blocks to pass through. The inner wall of the clearance grooves has positioning grooves. One end of the support bar is inserted into the pedal. When the support bar is rotated, the support block rotates into the positioning groove.

[0011] By adopting the above technical solution, the two ends of the horizontal bar can be inserted into the vertical bar. When the support rod passes through the vertical bar and is inserted into the pedal, rotating the support rod allows the support block to abut against the bottom of the vertical bar, and the support block provides support for the vertical bar.

[0012] Optionally, a fixing block is installed on the support rod, and the pedal has a slot for the support rod and the fixing block to be inserted into each other, as well as a rotating groove for the fixing block to rotate. The fixing block is located below the support block.

[0013] By adopting the above technical solution, when the support rod slides into the vertical rod, the fixing block of the support rod enters the clearance groove, and the fixing block enters the slot along with the support rod. When the support rod is rotated so that the support block supports the vertical rod, the fixing block rotates into the rotating groove, thereby fixing the vertical rod on the pedal.

[0014] Optionally, the climbing frame includes an upper mounting frame and a lower mounting frame, wherein the upper mounting frame is slidably mounted on the pedal.

[0015] By adopting the above technical solution, the upper mounting frame is slidably installed on the pedal. The upper mounting frame can be slid as needed, allowing people to install and dismantle formwork and pour cap beams from a high position.

[0016] Optionally, the upper mounting bracket is connected to a slide rod, which is slidably mounted on the upper surface of the pedal, and the vertical rod and the horizontal rod are in slidable contact with the slide rod.

[0017] By adopting the above technical solution, when the upper mounting frame slides on the pedal, it contacts the support rod after sliding a certain distance. The corresponding support rod needs to be lifted off the pedal before the slide can continue to slide. Therefore, the support rod can limit the slide, preventing the upper mounting frame from easily sliding along the pedal, which can improve the safety factor of the operator when working on the upper mounting frame.

[0018] Optionally, the upper mounting frame includes a construction platform located above the pedal, and the construction platform is equipped with a foot pedal that slides up and down on the construction platform.

[0019] By adopting the above technical solution, when a person stands on the construction platform, he can step on the foot pedal and let the foot pedal abut against the pedal. At this time, the friction between the upper mounting frame and the pedal is increased, which can increase the sliding of the upper mounting frame on the pedal. When the upper mounting frame needs to slide, the foot pedal should not be pressed against the pedal or should be removed from the pedal.

[0020] Optionally, the fastener is a screw and a nut, with the screw threadedly connected to the nut after passing through the two Bailey bridges.

[0021] By adopting the above technical solution, the screw and nut are used to fix the two Bailey bridge frames together.

[0022] Secondly, this application provides a method for erecting a formwork support for a cap beam, which adopts the following technical solution:

[0023] A method for erecting a formwork support for a cap beam, comprising erecting the formwork support for the cap beam as described above.

[0024] Pre-drill holes in the bridge piers

[0025] Install the support columns and hoist them into the pre-drilled holes, with both ends of the support columns extending out of the piers;

[0026] Install the footboards before the Bailey bridge is installed on the piers, so that people can stand on them after the Bailey bridge is installed on the piers.

[0027] Install the Bailey bridge, hoist the Bailey bridge, and attach the Bailey bridge to the support columns;

[0028] To fix the Bailey bridge frame, fasteners are used to secure the Bailey bridge frame to the bridge piers;

[0029] Install support rods and support plates. The support rods are fixedly installed on the Bailey bridge, and the support plates are fixedly installed on the support rods. The support plates are used to support the concrete forming the cap beam. The weight of the cap beam after it is formed acts on the Bailey bridge.

[0030] Finally, install the climbing frame.

[0031] By adopting the above technical solution, a Bailey bridge can be installed and fixed on the bridge piers, and support rods and support plates can be installed on the Bailey bridge to quickly form a formwork support. The climbing frame allows people to enter the Bailey bridge, the step board makes it easy for people to walk on the Bailey bridge, and it is convenient for people to erect support rods and support plates. Finally, formwork can also be erected.

[0032] In summary, this application includes at least one of the following beneficial effects:

[0033] 1. The Bailey bridge is directly erected on the piers via support columns, and then the support rods and support plates are installed on the Bailey bridge. The weight of the cap beam mainly acts on the Bailey bridge, and the formwork support is easy and quick to install.

[0034] 2. The upper mounting frame is slidably installed on the pedal, which facilitates the installation and disassembly of the formwork and the pouring of concrete, and allows you to see whether the concrete forming the cap beam has been compacted. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0036] Figure 2 yes Figure 1 Obtain an enlarged schematic diagram of point A;

[0037] Figure 3 This is a schematic diagram of a Bailey bridge structure according to an embodiment of this application;

[0038] Figure 4 This is a schematic diagram of the pedal being installed on the Bailey bridge according to an embodiment of this application;

[0039] Figure 5 yes Figure 4 Obtain an enlarged schematic diagram of point B;

[0040] Figure 6 This is a cross-sectional view of an embodiment of the present application showing the support block of the support rod installed inside the vertical rod;

[0041] Figure 7 This is a schematic diagram illustrating the structure of the upper and lower mounting brackets in an embodiment of this application;

[0042] Figure 8 yes Figure 7 Enlarged view of point C;

[0043] Figure 9 This is a schematic diagram of the overall structure of the upper mounting bracket according to an embodiment of this application;

[0044] Figure 10 This is a flowchart of the template support erection method according to an embodiment of this application.

[0045] Explanation of reference numerals in the attached drawings: 1. Pier; 11. Reserved hole; 2. Support column; 3. Bailey bridge; 31. Mounting frame; 32. Reinforcing frame; 4. Screw; 41. Nut; 5. Support rod; 6. Support plate; 7. Climbing frame; 71. Upper mounting frame; 711. Slide rod; 712. Construction platform; 713. Step bar; 714. Pressure plate; 715. Return spring; 72. Lower mounting frame; 73. Staircase; 74. Transfer platform; 8. Step; 81. Connecting block; 82. Limiting block; 83. Slot; 84. Rotary groove; 9. Prefabricated guardrail; 91. Vertical bar; 911. Insertion hole; 912. Through groove; 913. Clearance groove; 914. Positioning groove; 92. Horizontal bar; 93. Support rod; 931. Support block; 932. Fixing block. Detailed Implementation

[0046] The following is in conjunction with the appendix Figure 1-10 This application will be described in further detail.

[0047] This application discloses a formwork support for a cap beam. (Refer to...) Figure 1 and Figure 2 A formwork support for a bridge pier is installed on a bridge pier 1. The formwork support includes a support column 2 and two Bailey bridge frames 3. The bridge pier 1 has pre-drilled holes 11 for the support column 2 to pass through. The support column 2 passes through the pre-drilled holes 11 into the bridge pier 1, and the two Bailey bridge frames 3 are respectively installed on both ends of the support column 2. In this embodiment, there are two bridge piers 1, with the support column 2 corresponding to each bridge pier 1. A fixing member is installed between the two Bailey bridge frames 3 to securely connect them together. The fixing member consists of a screw rod 4 and a nut 41. The screw rod 4 passes through the two Bailey bridge frames 3 and is threadedly connected to the nut 41, facilitating the secure connection between the two Bailey bridge frames 3.

[0048] Reference Figure 1 The cap beam formwork support also includes support rods 5 and support plates 6 installed on the Bailey bridge 3. Several support rods 5 are evenly installed on the two Bailey bridge 3 sections. The support plates 6 are fixedly installed on the support rods 5, and the support rods 5 provide support for the support plates 6. After the support plates 6 are installed, the formwork is erected to form the pouring cavity for the cap beam. The weight of the support plates 6 is entirely transferred to the Bailey bridge 3. After the cap beam is poured, the formwork is removed first.

[0049] The girder formwork support also includes a climbing frame 7, which is installed on the bridge abutment, with one end of the climbing frame 7 close to the Bailey bridge 3. This facilitates people climbing up to the Bailey bridge 3, and then installing the support rods 5 and support plates 6.

[0050] Reference Figure 3The Bailey bridge 3 includes a mounting frame 31 and a reinforcing frame 32 installed within the mounting frame 31. Both the mounting frame 31 and the reinforcing frame 32 are rectangular structures. When the reinforcing frame 32 is installed within the mounting frame 31, the sharp corners of the reinforcing frame 32 are fixedly connected to the mounting frame 31, and the sharp corners of two adjacent reinforcing frames 32 are close to each other.

[0051] Reference Figure 4 The Bailey bridge 3 is detachably equipped with a footplate 8, which is connected to a connecting block 81 via a connecting rod. The connecting block 81 is inserted into the reinforcing frame 32. The connecting block 81 has a triangular cross-section, and its two sides abut against two reinforcing rods of the reinforcing frame 32. Two limiting blocks 82 are installed on the connecting block 81. When the connecting block 81 is inserted upward into the fixed frame, the fixed frame is located between the two limiting blocks 82, which prevent the connecting block 81 from horizontally detaching from the fixed frame. Multiple connecting blocks 81 are arranged along the length of the footplate 8, ensuring that the footplate 8 is stably installed on the Bailey bridge 3.

[0052] Both Bailey frames 3 can be fitted with footboards 8, and it can be decided whether to install climbing frames 7 on both Bailey frames 3 as needed.

[0053] Reference Figure 4 and Figure 5 In one embodiment, a prefabricated guardrail 9 is installed on the pedal 8. The prefabricated guardrail 9 includes multiple vertical bars 91, multiple horizontal bars 92, and multiple support bars 93. The side wall of the vertical bars 91 is provided with insertion holes 911 for inserting the horizontal bars 92. At least one horizontal bar 92 is installed between two vertical bars 91. In this embodiment, two horizontal bars 92 are installed between two vertical bars 91.

[0054] Reference Figure 5 and Figure 6 A through groove 912 is provided on the vertical rod 91, extending along the length of the vertical rod 91. A support rod 93 passes through the through groove 912 and is inserted into the pedal 8. A support block 931 is fixedly connected to the support rod 93. A clearance groove 913 is provided on the vertical rod 91 for the support block 931 to pass through. A positioning groove 914 is provided on the inner wall of the clearance groove 913. After the support rod 93 is inserted into the pedal 8, rotating the support rod 93 causes the support block 931 to rotate into the positioning groove 914, thereby enabling the support block 931 to support the vertical rod 91.

[0055] A fixing block 932 is mounted on the support rod 93. The pedal 8 has a slot 83 for the support rod 93 and the fixing block 932 to be inserted into each other, and a rotating groove 84 for the fixing block 932 to rotate. The fixing block 932 is located below the support block 931. When the support rod 93 is rotated, the support block 931 and the fixing block 932 rotate simultaneously with the support rod 93, causing the support block 931 to rotate into the positioning groove 914 and the fixing block 932 to rotate into the rotating groove 84. This allows the support rod 93 to provide stable support and fixation for the vertical rod 91, and the support rod 93 is also fixedly mounted on the pedal 8.

[0056] Reference Figure 7 and Figure 8 In one embodiment, the climbing frame 7 includes an upper mounting frame 71 and a lower mounting frame 72. The upper mounting frame 71 can abut against the lower mounting frame 72, and the lower mounting frame 72 supports the upper mounting frame 71. The upper mounting frame 71 is slidably mounted on the footboard 8, and a sliding rod 711 is mounted on the upper mounting frame 71. The sliding rod 711 is slidably mounted on the upper surface of the footboard 8. When the sliding rod 711 slides with the upper mounting frame 71, the vertical rod 91 and the horizontal rod 92 slide in contact with the upper surface of the sliding rod 711. There is at least one vertical rod 91 between the two sliding rods 711, so the upper mounting frame 71 abuts against the support rod 93 after sliding a certain distance, and the upper mounting frame 71 cannot slide from one end to the other along the Bailey bridge 3 in one go. The support rod 93 not only supports the vertical rod 91, but also limits the range of the sliding rod 711 on the pedal 8. When the sliding rod 711 slides on the pedal 8, the horizontal rod 92 and the vertical rod 91 limit the vertical movement of the sliding rod 711. The weight of the upper mounting bracket 71 is applied to the horizontal rod 92 or the vertical rod 91 through the sliding rod 711. Because of the cooperation between the support rod 93 and the vertical rod 91, the horizontal rod 92 or the vertical rod 91 can still be stably installed on the pedal 8.

[0057] Reference Figure 9 The upper climbing frame 7 also includes stairs 73 and a transfer platform 74 located between the stairs 73. The upper installation frame 71 includes a construction platform 712, which is connected to the transfer platform 74 and is located above the tread 8. Standing on the construction platform 712 allows for better erection of formwork and pouring of the cap beam.

[0058] Multiple foot pedals 713 are installed on the construction platform 712, and the foot pedals 713 slide up and down on the construction platform 712. A pressure plate 714 is connected to the upper end of each foot pedal 713, and multiple foot pedals 713 are connected to the same pressure plate 714. A return spring 715 is installed between the pressure plate 714 and the construction platform 712, and the return spring 715 is sleeved on the foot pedals 713. When the pressure plate 714 is stepped on, the foot pedals 713 abut against the pedal 8, increasing the friction between the upper mounting frame 71 and the pedal 8, requiring a very large force to push the upper mounting frame 71. When the pressure plate 714 is not stepped on, the return spring 715 drives the foot pedals 713 away from the pedal 8, allowing the upper mounting frame 71 to slide normally.

[0059] The implementation principle of a cap beam formwork support in this application embodiment is as follows:

[0060] After the bridge pier 1 is installed, the hoisting support column 2 is inserted into the reserved hole 11 of the bridge pier 1. The Bailey frame 3 with the step plate 8 can then be hoisted and attached to the support column 2. People can then install the support rod 5 and support plate 6 through the Bailey frame 3, so that the two ends of the length of the support plate 6 are respectively attached to the two bridge piers 1. The cap beam formed on the support plate 6 mainly exerts force on the Bailey frame 3. The entire formwork support is relatively simple to erect. After the climbing frame 7 is installed on the bridge abutment, people can enter the step plate 8 through the climbing frame 7 and push the slide rod 711 through the step plate 8 to make the upper installation frame 71 slide along the step plate 8. The upper installation frame 71 can provide a way to climb to a high place, making it convenient for people to continue to erect formwork, pour cap beams and dismantle formwork on the basis of the support plate 6.

[0061] Reference Figure 10 This application also discloses a method for erecting a formwork support for a cap beam.

[0062] A method for erecting a formwork support for a cap beam, comprising erecting the formwork support for the cap beam as described above.

[0063] Hole 11 is reserved on pier 1.

[0064] Install support column 2 and hoist it into the reserved hole 11. Both ends of support column 2 extend out of the pier 1.

[0065] Install the step 8. Before the Bailey bridge 3 is installed on the pier 1, install the step 8 on the Bailey bridge 3 so that the Bailey bridge 3 can provide a standing position after it is installed on the pier 1.

[0066] Install Bailey bridge 3, hoist Bailey bridge 3, and Bailey bridge 3 is hung on support column 2;

[0067] Fixed Bailey bridge 3 is secured to pier 1 using fasteners;

[0068] Install support rod 5 and support plate 6. Support rod 5 is fixedly installed on Bailey bridge 3, and support plate 6 is fixedly installed on support rod 5. Support plate 6 is used to support the concrete forming the cap beam. The weight of the cap beam after it is formed acts on Bailey bridge 3.

[0069] Finally, install the climbing frame 7 on the bridge platform.

[0070] The fasteners are screw 4 and bolt. Screw 4 passes through the two Bailey bridge frames 3 and is threaded to nut 41, thus fixing the two Bailey bridge frames 3.

[0071] Prefabricated guardrails 9 can be installed on the pedal 8. The prefabricated guardrails 9 include multiple vertical bars 91, multiple horizontal bars 92, and multiple support bars 93. The vertical bars 91 are fixed to the pedal 8 by the support bars 93. The cooperation between the vertical bars 91 and the horizontal bars 92 plays the main protective role.

[0072] The climbing frame 7 includes an upper mounting frame 71 and a lower mounting frame 72. The upper mounting frame 71 can slide along the footboard 8. The upper mounting frame 71 includes a construction platform 712, which is located above the footboard 8. Standing on the construction platform 712 allows for better erection of formwork and pouring of the cap beam.

[0073] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A formwork support for a bridge pier (1), characterized in that: The bridge includes a support column (2) and two Bailey bridge frames (3). The pier (1) has a reserved hole (11) for the support column (2) to pass through. A fastener is installed between the two Bailey bridge frames (3). The bridge also includes a support rod (5) and a support plate (6) installed on the Bailey bridge frames (3). The support rod (5) is used to support the support plate (6). A footboard (8) is detachably installed on the Bailey bridge frames (3). The bridge also includes a climbing frame (7) installed on the bridge abutment. The climbing frame (7) is located near one end of the Bailey bridge frame (3). The Bailey bridge (3) includes a mounting frame (31) and a reinforcing frame (32) installed in the mounting frame (31). Multiple reinforcing frames (32) are connected sequentially along the length of the Bailey bridge (3). The pedal (8) is connected to a connecting block (81). The connecting block (81) is inserted into the reinforcing frame (32). Limiting blocks (82) are installed on both opposite sides of the connecting block (81). When the connecting block (81) is inserted into the reinforcing frame (32), the reinforcing frame (32) is located between the two limiting blocks (82). The pedal (8) is equipped with a prefabricated guardrail (9), which includes multiple vertical bars (91), multiple horizontal bars (92), and multiple support bars (93). The side wall of the vertical bar (91) is provided with a hole (911) for the horizontal bar (92) to be inserted. The vertical bar (91) is provided with a through groove (912). The support bar (93) passes through the vertical bar (91) through the through groove (912). A support block (931) is fixedly connected to the support bar (93). The vertical bar (91) is provided with a clearance groove (913) for the support block (931) to pass through. The inner wall of the clearance groove (913) is provided with a positioning groove (914). One end of the support bar (93) is inserted into the pedal (8). When the support bar (93) is rotated, the support block (931) rotates into the positioning groove (914). A fixing block (932) is installed on the support rod (93), and a slot (83) for the support rod (93) and the fixing block (932) to be inserted into the pedal (8), and a rotating groove (84) for the fixing block (932) to rotate. The fixing block (932) is located below the support block (931).

2. The formwork support for a cap beam according to claim 1, characterized in that: The climbing frame (7) includes an upper mounting frame (71) and a lower mounting frame (72), wherein the upper mounting frame (71) is slidably mounted on the pedal (8).

3. The formwork support for a cap beam according to claim 2, characterized in that: The upper mounting bracket (71) is connected to a slide rod (711), which is slidably mounted on the upper surface of the pedal (8). The vertical rod (91) and the horizontal rod (92) are in slidable contact with the slide rod (711).

4. A formwork support for a cap beam according to claim 2, characterized in that: The upper mounting frame (71) includes a construction platform (712) located above the pedal (8). The construction platform (712) is equipped with a foot pedal (713) which slides up and down on the construction platform (712).

5. A formwork support for a cap beam according to claim 1, characterized in that: The fasteners are a screw (4) and a nut (41), with the screw (4) threadedly connected to the nut (41) after passing through the two Bailey bridges (3).

6. A method for erecting a formwork support for a cap beam, characterized in that: The formwork support for the cap beam is erected according to any one of claims 1-5. A reserved hole (11) is set on the pier (1); Install the support column (2), hoist the support column (2) into the reserved hole (11), and extend both ends of the support column (2) out of the pier (1); Install the footboard (8). Before the Bailey bridge frame (3) is installed on the pier (1), first install the footboard (8) on the Bailey bridge frame (3) so that people can stand on it after the Bailey bridge frame (3) is installed on the pier (1). Install the Bailey bridge (3), hoist the Bailey bridge (3) so that the Bailey bridge (3) is attached to the support column (2); Fixed Bailey bridge frame (3) is fixed to the pier (1) using fasteners; Install support rods (5) and support plates (6). Support rods (5) are fixedly installed on the Bailey bridge (3), and support plates (6) are fixedly installed on the support rods (5). Support plates (6) are used to support the concrete forming the cap beam. The weight of the cap beam after it is formed acts on the Bailey bridge (3). Finally, install the climbing frame (7).

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