High-speed railway prefabricated box girder vertical wall integrated pouring formwork structure

Abstract

The utility model provides a kind of high-speed railway prefabricated box girder vertical wall integrated pouring formwork structure, belong to road construction technical field, to solve the problem that box girder vertical wall A pouring construction is slow, formwork installation is difficult, including multiple inner formwork, pedestal side plate and multiple outer formwork installed on pedestal side plate, every outer formwork is parallel with single inner formwork interval and is connected by jointing gap spacer plate to form pouring mold monomer, outer formwork and inner formwork both ends are provided with end plate, jointing gap spacer plate is provided with mounting hole, end plate is provided with the positioning hole corresponding with mounting hole, positioning hole and corresponding mounting hole are used for connecting outer formwork and inner formwork with through pin shaft, gap is generated between the jointing gap spacer plate of adjacent outer formwork head and tail, and insert plate is clamped in gap.

Description

Technical Field

[0001] This utility model belongs to the field of road construction technology, and more specifically, it relates to an integrated casting template structure for the vertical walls of precast box girders for high-speed railways. Background Technology

[0002] The three walls of the integrated box girder bridge deck of the high-speed railway consist of vertical wall A, vertical wall B, and protective wall. Vertical wall A is located on the outermost side, and its outer edge is flush with the outer edge of the box girder flange. A 10mm wide joint is set every 2m. Vertical wall A is mainly used as the foundation for bridge railings / sound barriers and cable trough partitions.

[0003] According to the design requirements, this wall needs to be cast in the beam yard. It can be cast on the beam storage platform or the beam fabrication platform. For ease of construction, the traditional method is to construct the vertical wall A together with the vertical wall B and the protective wall on the beam storage platform. This method has the following disadvantages: ① It increases the construction burden in the beam storage area, which prolongs the beam storage period of the box girder and may affect the subsequent beam erection process; ② The outer side of the box girder flange plate is suspended, which means that the outer side formwork of the vertical wall A needs to be suspended. This not only makes the construction difficult, but also easily causes grout leakage and poor appearance quality at the construction joint.

[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided a high-speed railway precast box girder vertical wall integrated casting formwork structure, in order to achieve a more practical value. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides an integrated casting template structure for the vertical walls of precast box girders for high-speed railways, which solves the issues of slow casting construction of the box girder vertical wall A and the difficulty in template installation.

[0006] The purpose and effect of this utility model of an integrated casting formwork structure for the vertical walls of precast box girders for high-speed railways are achieved by the following specific technical means:

[0007] An integrated casting formwork structure for the vertical walls of precast box girders for high-speed railways includes multiple inner formworks, platform side plates, and multiple outer formworks installed on the platform side plates. Each outer formwork is parallel to and spaced apart from a single inner formwork, and connected by a partition plate to form a casting mold unit. Both ends of the outer and inner formworks are provided with end plates. The partition plates are provided with mounting holes, and the end plates are provided with positioning holes corresponding to the mounting holes. The positioning holes and the corresponding mounting holes are connected by pins for connecting the outer and inner formworks. A gap is created between the partition plates at the beginning and end of adjacent outer formworks, and insert plates are inserted into the gap.

[0008] Furthermore, a swing arm is provided on one side of the insert plate, and a pin is slidably inserted through the bottom positioning hole of the outer template and the inner template at one end of each casting mold unit, and the swing arm is sleeved on the pin.

[0009] Furthermore, a fixing ring is provided around the positioning hole corresponding to the swing arm on the end plate, and a limit block is provided on the inner ring of the fixing ring. A movable groove is provided on the pin shaft along its length direction, and the limit block is engaged in the corresponding movable groove.

[0010] Furthermore, a hexagonal sleeve is provided on the periphery of the pin at one end of the swing arm.

[0011] Furthermore, a fixing rod is provided on the insert plate.

[0012] Furthermore, one end of the insert plate within the insertion gap is provided with multiple insertion ridges.

[0013] Furthermore, a lifting groove is provided on the top of the insert plate.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The outer formwork is fixed on the side plate of the platform, reducing formwork installation and avoiding misalignment issues. The partition plate can directly connect the outer and inner formwork, and also serves to insert a plate during the pouring process to form a precise joint width between the vertical walls A. After removing the plate, there is a movement gap between the partition plates, which can be easily removed after the concrete has solidified, making construction more convenient. The integrated pouring of the vertical wall A and the box girder avoids secondary pouring, resulting in higher construction efficiency and a shorter cycle. Attached Figure Description

[0016] Figure 1 This is a structural diagram showing the usage location of the casting template for half of the precast box girder in this utility model.

[0017] Figure 2 This is a partial structural cross-sectional view of an integrated casting template structure for the vertical walls of a precast box girder for high-speed railway, according to this utility model.

[0018] Figure 3 This is a partial exploded view of the integrated casting template structure for the vertical walls of a precast box girder for high-speed railway, according to this utility model.

[0019] Figure 4 yes Figure 3 A magnified view of region A in the middle.

[0020] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0021] 1. Side plate of the platform; 2. Outer template; 3. Inner template; 4. End plate; 5. Positioning hole; 6. Joint partition; 7. Insert plate; 8. Pin; 9. Fixing ring; 10. Movable groove; 11. Limiting block; 12. Fixing rod; 601. Mounting hole; 602. Lifting groove; 701. Insertion edge; 702. Swing arm; 703. Hexagonal sleeve. Detailed Implementation

[0022] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0023] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Example:

[0026] As attached Figure 1 To be continued Figure 4 As shown:

[0027] This utility model provides an integrated casting template structure for the vertical wall of a precast box girder for high-speed railway, including multiple inner templates 3, a platform side plate 1, and multiple outer templates 2 installed on the platform side plate 1. The platform side plate 1 is a mold baffle on the side when the box girder is poured, forming the outer side wall of the box girder end, while the outer templates 2 extend above the platform side plate 1, and their height is consistent with the height of the vertical wall A.

[0028] Each outer template 2 is parallel and spaced with a single inner template 3 and connected by a partition plate 6 to form a casting mold unit. Multiple casting mold units are connected end to end and cover the beam end of the box girder casting mold.

[0029] Both ends of the outer template 2 and the inner template 3 are provided with end plates 4. The joint partition 6 is provided with mounting holes 601. The end plate 4 is provided with positioning holes 5 corresponding to the mounting holes 601. The positioning holes 5 and the corresponding mounting holes 601 are connected by a pin 8 to connect the outer template 2 and the inner template 3. The bottom height of the outer template 2 is the same as the height of the platform side plate 1. The connection of the joint partition 6 makes the inner template 3 suspended above the box girder mold.

[0030] Multiple casting mold units are distributed on both sides of the entire box girder mold. After the box girder is cast, the vertical wall A can be cast directly. Before casting, the outer formwork 2 and the inner formwork 3 are connected by the joint partition 6, which reduces the workload of formwork installation and avoids problems of misalignment.

[0031] Both the outer template 2 and the inner template 3 have multiple reinforcing ribs arranged in an array in the middle, similar to those on the end plate 4, which improves the overall structural stability of the template.

[0032] A gap is created between the joint partitions 6 at the beginning and end of the adjacent outer formwork 2. Insert plates 7 are inserted into the gap to make the gap of the cast vertical wall A aesthetically pleasing and less prone to deformation, and to accurately guarantee the joint width of the entire vertical wall A.

[0033] In this embodiment, a swing arm 702 is provided on one side of the insert plate 7. A pin 8 is slidably inserted through the bottom positioning hole 5 of the outer template 2 and the inner template 3 at one end of each casting mold unit. The swing arm 702 is sleeved on the pin 8. Before each pouring of the vertical wall A, the inner template 3 is simply installed parallel to the inner side of the outer template 2 through the fracture partition 6. Then, in order to maintain the gap between the two fracture partitions 6, the insert plate 7 is swung so that it is inserted between the two fracture partitions 6. Since multiple positioning holes 5 are vertically distributed on the end plate 4, and multiple corresponding mounting holes 601 are provided on the fracture partition 6, a positioning pin is inserted into each positioning hole 5 and mounting hole 601. Only the bottom pin 8 is slidably connected to the corresponding end plate 4. Multiple insertion ribs 701 are provided at one end of the insert plate 7 inserted into the gap. The insertion ribs 701 are inserted between the two positioning pins, which can reach a deeper gap, so that the gap remains stable.

[0034] After the pouring is completed, the insert plate 7 is removed. The top of the insert plate 6 has a lifting groove 602, which can be used to directly pull out the fracture partition plate 6. Since there is a moving gap between the fracture partition plates 6, it can be easily pulled out, avoiding the situation where it is difficult to pull out after the concrete on both sides has solidified.

[0035] Among them, a fixing ring 9 is provided on the side of the positioning hole 5 corresponding to the swing arm 702 on the end plate 4. A limiting block 11 is provided on the inner ring of the fixing ring 9. A movable groove 10 is provided on the pin 8 along its length direction. The limiting block 11 is locked in the corresponding movable groove 10. The limiting block 11 restricts the movement range of the pin 8. When the pin 8 moves to the outermost position, the pin 8 does not restrict the movement of the fracture partition 6. After the fracture partition 6 is installed in the corresponding position, it can push the pin 8 to make it initially positioned.

[0036] In addition, a hexagonal sleeve 703 is provided on the periphery of the pin 8 at one end of the swing arm 702. The swing arm of the insert plate 7 can be extended by using a wrench tool to control the insertion and removal of the fracture partition plate 6. A fixing rod 12 is provided on the insert plate 7, which can be directly manipulated to swing and insert the insert plate 7.

[0037] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A precast box girder vertical wall integrated casting formwork structure for high-speed railway, characterized in that: The casting mold includes multiple inner templates (3), a base side plate (1), and multiple outer templates (2) installed on the base side plate (1). Each outer template (2) is parallel to and spaced apart from a single inner template (3) and connected by a partition plate (6) to form a casting mold unit. Both ends of the outer template (2) and the inner template (3) are provided with end plates (4). The partition plate (6) is provided with mounting holes (601). The end plate (4) is provided with positioning holes (5) corresponding to the mounting holes (601). The positioning holes (5) and the corresponding mounting holes (601) are connected by a pin (8) to connect the outer template (2) and the inner template (3). A gap is generated between the partition plates (6) at the beginning and end of the adjacent outer templates (2), and an insert plate (7) is inserted in the gap.

2. The integrated casting formwork structure for the vertical walls of precast box girders for high-speed railways as described in claim 1, characterized in that: A swing arm (702) is provided on one side of the insert plate (7). A pin (8) is slidably inserted through the bottom positioning hole (5) of the outer template (2) and inner template (3) of each casting mold unit. The swing arm (702) is sleeved on the pin (8).

3. The integrated casting formwork structure for the vertical walls of precast box girders for high-speed railways as described in claim 2, characterized in that: A fixing ring (9) is provided around the positioning hole (5) of the swing arm (702) on the end plate (4). A limit block (11) is provided on the inner ring of the fixing ring (9). A movable groove (10) is provided on the pin (8) along its length direction. The limit block (11) is locked in the corresponding movable groove (10).

4. The integrated casting formwork structure for the vertical walls of precast box girders for high-speed railways as described in claim 2, characterized in that: One end of the swing arm (702) is fitted with a hexagonal sleeve (703) around the pin (8).

5. The integrated casting formwork structure for the vertical walls of precast box girders for high-speed railways as described in claim 2, characterized in that: A fixing rod (12) is provided on the insert plate (7).

6. The integrated casting formwork structure for the vertical walls of precast box girders for high-speed railways as described in claim 1, characterized in that: The insertion plate (7) has multiple insertion ridges (701) at one end within the insertion gap.

7. The integrated casting formwork structure for the vertical walls of precast box girders for high-speed railways as described in claim 1, characterized in that: The top of the insert plate (7) is provided with a lifting groove (602).

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