A concrete sealing member, a formwork and a construction method thereof

Abstract

The present application relates to the technical field of bridge crash barrier construction, and particularly relates to a concrete blocking piece, a formwork and a construction method thereof. The concrete blocking piece comprises a blocking piece body, the blocking piece body is arranged on the top surface of a beam body along the bridge direction, the blocking piece body is located on the outer side of embedded steel bars of a crash barrier, the height of the top surface of the blocking piece body is adapted to the height of the elevation line of the bridge deck pavement, the blocking piece body is formed by pouring concrete, and the outer formwork of the crash barrier is located on the inner side of the blocking piece body. The concrete blocking piece, the blocking piece body can not only play a blocking role, but also play a role of an elevation piece, the step of subsequently arranging an elevation belt can be reduced, and the construction efficiency can be improved. The blocking piece body is made of concrete, the hardness of the concrete is higher, the concrete is not easy to deviate, and the formwork body of the crash barrier is prevented from leaking grout as much as possible.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of bridge crash barrier construction technology, in particular to a concrete blocking piece, a formwork and a construction method thereof. BACKGROUND

[0002] In order to ensure the safety of vehicles driving on the bridge, crash barriers need to be set on both sides of the bridge deck. During the construction of the crash barrier, concrete is prone to leak from the bottom formwork of the crash barrier, especially the outer formwork of the crash barrier needs to be blocked to reduce the waste of concrete and ensure the stability of the crash barrier.

[0003] At present, the blocking of the bottom of the outer formwork of the domestic bridge crash barrier wall is mostly carried out by using rubber strips or channel steel in combination with foam glue. The operating personnel uses the crash barrier formwork body trolley to block the foam glue outside the crash barrier formwork body. This blocking method has a high operating position and high risk. Moreover, rubber strips and foam glue are flexible materials and are prone to deviation, which leads to concrete leakage. SUMMARY

[0004] The present application aims to overcome the problem of blocking the bottom of the outer formwork of the bridge crash barrier by using rubber strips and foam glue in the prior art, but rubber strips and foam glue are flexible materials and are prone to deviation, which leads to concrete leakage, affecting the blocking effect. A concrete blocking piece, a formwork and a construction method thereof are provided.

[0005] In order to achieve the above-mentioned application purpose, the present application provides the following technical solutions:

[0006] A concrete blocking piece, comprising a blocking piece body, the blocking piece body is arranged on the top surface of the beam body along the bridge direction, the blocking piece body is located outside the embedded steel bar of the crash barrier, the blocking piece body is formed by pouring concrete, and the outer formwork of the crash barrier is located on the top surface of the blocking piece body.

[0007] The cross section of the blocking piece body can be arc-shaped or polygonal. The width of the blocking piece body along the transverse direction is determined according to the actual situation.

[0008] The inner side of the blocking piece refers to the side of the blocking piece facing the embedded steel bar, and the outer side of the blocking piece refers to the side of the blocking piece facing away from the embedded steel bar. The top surface height of the blocking piece body is equal to the height of the top surface of the crash barrier minus the height of the crash barrier itself minus an error value, and the specific size of the error value is determined according to the actual situation. Then, during the pouring of the crash barrier, the blocking piece body can be used as the basis for construction. Then, the blocking piece body not only plays a blocking role, but also plays a role of a height piece, which can reduce the subsequent steps of setting the height belt, and is beneficial to improving the construction efficiency. The blocking piece body is made of concrete, which has higher hardness and is less likely to deviate, thereby avoiding the leakage of the crash barrier formwork body as much as possible. The crash barrier formwork is placed on the top of the blocking piece, so that the crash barrier can be directly poured on the top of the blocking piece during the pouring of the crash barrier, thereby preventing leakage as much as possible.

[0009] Preferably, the outer side of the blocking piece body is flush with the outer side of the flange of the beam body.

[0010] The outer side of the blocking piece is flush with the outer side of the flange of the beam body, and the length direction of the blocking piece is parallel to the axis of the bridge. The crash barrier formwork is placed above the blocking piece, which can ensure that the crash barrier is parallel to the axis of the bridge as much as possible.

[0011] A concrete blocking piece formwork for pouring concrete, comprising a formwork body and a fixing device, the formwork body is used for pouring a concrete blocking piece as described above, the formwork body comprises a first formwork and a second formwork, the first formwork is located on the outer side of the second formwork, the first formwork is connected to the fixing device, the fixing device is detachably connected to the embedded steel bar, and the formwork body can move along the bridge direction.

[0012] The size, length and cross-sectional shape of the formwork body are determined according to the actual situation. The cross-sectional shape of the formwork body can be rectangular, triangular or arc-shaped. The formwork body can be a hollow formwork body or a solid formwork body. The fixing device can clamp the formwork body, or can be detachably connected to the formwork body through screws, or can be welded to the formwork body. When the formwork body moves, it can move together with the fixing device; or a plurality of fixing devices can be arranged along the bridge direction, so that only the formwork body moves without moving the fixing device. The fixing device can be connected to the embedded steel bar through a butterfly buckle, or can be connected to the embedded steel bar through a bolt, or can be connected to the embedded steel bar through a clamp.

[0013] The fixing device is used to fix the position of the template body on the beam body. Because the device is used as a template for pouring the blocking member body, the device needs to be removed after the pouring of the blocking member body is completed, so the fixing device and the embedded steel bar are detachably connected, facilitating subsequent removal. The embedded steel bar is the framework of the crash barrier and can position and support the crash barrier. The template body is located outside the embedded steel bar, i.e., on the outer side of the crash barrier formwork. The template body can move along the bridge direction, so after the pouring of a section of the blocking member body is completed, it can be directly moved to the place where the next section needs to be poured. By arranging the template body outside the embedded steel bar, the device can pour the blocking member body inside the template body and use the blocking member body to block the outer form of the crash barrier. Compared with the prior art of using rubber strips and foam glue to block the outer form of the crash barrier, the blocking member body has higher hardness and is less likely to deviate, thereby avoiding the leakage of the template body of the crash barrier as much as possible. When using the device to pour the blocking member body, the operator can stand in a more appropriate place to pour, thereby reducing high-altitude work as much as possible and reducing the risk of construction.

[0014] Preferably, the fixing device comprises a slot member for fixing the template body.

[0015] The number of slot members can be one or several. When the slot member can clamp both sides of the template body, the slot member can be arranged along the bridge direction when the template body is moved along the bridge direction, so as to move only the template body without moving the slot member; or the relative position of the slot member and the template body can be fixed, the connection between the slot member and the beam body is released, and the beam body is directly moved by moving the slot member. By fixing the template body through the slot member, the stability of the template body can be ensured as much as possible, and the template body can be prevented from deviating as much as possible during the pouring of the blocking member body, thereby ensuring that the blocking member body can block the outer form of the crash barrier as much as possible.

[0016] Preferably, the slot member is connected to the embedded steel bar through a connecting rod, and an end of the connecting rod away from the template body exceeds the embedded steel bar.

[0017] The side of the connecting rod away from the template body exceeds the embedded steel bar, so that when the slot member is adjusted, the operation is facilitated, thereby avoiding the situation that the operator operates outside the embedded steel bar and reducing the danger of high-altitude work.

[0018] Preferably, the opening width of the slot member is 1-2 cm larger than the width of the template body.

[0019] The opening width of the groove-shaped member is 1-2 cm larger than the width of the template body. In the case of reserving sufficient space to put the template body into the groove-shaped member and to properly adjust the position of the groove-shaped member, the movement of the template body in the groove-shaped member is avoided as much as possible, which is beneficial to the stability of the device and thus avoids the deviation of the body of the blocking member as much as possible in the construction process.

[0020] Preferably, a cushion block is further arranged between the groove-shaped member and the template body.

[0021] The cushion block arranged between the groove-shaped member and the template body can fix the relative position of the template body and the groove-shaped member, which is beneficial to the stability of the device and also beneficial to the quality of the body of the blocking member. Moreover, the relative position of the template body and the groove-shaped member is fixed, so that when the position of the template body is adjusted, the template body can be directly moved by adjusting the position of the groove-shaped member, which is convenient to operate.

[0022] Preferably, the length of the template body is 5-10 m.

[0023] The length of the template body is 5-10 m, which will not affect the operation due to the too long length of the template body, and will not cause large errors due to the too short length of the template body, so that the length direction of the blocking member and the axial direction of the bridge have a large deviation, thereby affecting the quality of the crash barrier.

[0024] Preferably, the fixing device is several, and the fixing devices are distributed along the length direction of the template body.

[0025] The several groove-shaped members are distributed along the length direction of the template body, which can avoid the height difference between the two ends of the template body caused by only one groove-shaped member, thereby affecting the height of the top surface of the blocking member and further affecting the quality of the crash barrier.

[0026] A construction method of a concrete blocking member, comprising the following steps:

[0027] S1, installing a template for pouring a concrete blocking member as described above;

[0028] S2, pouring the body of the blocking member in the template body;

[0029] S3, moving the template body along the bridge direction to the next section, and repeating steps S1 and S2 until the body of the blocking member of the whole bridge is poured.

[0030] In step S1, the installation of the template comprises connecting the fixing device to the embedded steel bar. The fixing device is fixed to the embedded steel bar, thereby fixing the position of the template body, which is beneficial to the stability of the device. In step S3, when the template body is moved, the fixing device and the template body can be adjusted together, or only the template body can be adjusted without adjusting the fixing device.

[0031] Preferably, the concrete strength of the pouring of the blocking body in step S3 is equal to the concrete strength of the pouring of the crash barrier.

[0032] The concrete strength of the pouring of the blocking body is equal to the concrete strength of the pouring of the crash barrier template body, so during the blocking of the crash barrier outer mold by the blocking body, the crash barrier is directly poured above the blocking, and the blocking becomes an integral whole, without the need to remove the blocking body later, which is beneficial to improve the construction efficiency and save the construction cost. It can also avoid the leakage of the poured concrete as much as possible.

[0033] Compared with the prior art, the present application has the following advantages:

[0034] 1. A concrete blocking piece made of concrete, which has high hardness and is not easy to deviate. The blocking body is arranged on the outside of the embedded steel along the bridge direction, and the height of the top surface of the blocking body is adapted to the height of the top surface of the crash barrier, so that the blocking body not only plays a blocking role, but also plays a role of a height marker. The concrete blocking body has high hardness and is not easy to deviate, and the crash barrier template is directly arranged above the blocking during the pouring of the crash barrier, solving the problem of using rubber strips and foam rubber to block the outer mold of the bridge crash barrier in the prior art, but the rubber strips and foam rubber are flexible materials and are easy to deviate, resulting in leakage of the poured concrete and affecting the blocking effect.

[0035] 2. A template for pouring a concrete blocking piece, which is used as a template for pouring the above-mentioned concrete blocking body. The template body and the fixing device connected to the template body are provided, and the fixing device is detachably connected to the beam body. The template body can move along the bridge direction, so that the position of the template body on the bridge can be adjusted according to the position of the blocking body to be poured, and the operator can stand in a more appropriate place to pour when using the device to pour the blocking body, thereby reducing high-altitude work as much as possible and reducing the risk of construction.

[0036] 3. A construction method of a concrete blocking piece, which uses the above-mentioned template for pouring a concrete blocking piece. The fixing device is fixed to the embedded steel, and then the position of the template body is fixed, which is beneficial to the stability of the device. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 It is a front view angle installation schematic diagram of the template for pouring a concrete blocking piece in embodiment 2.

[0038] Figure 2 It is a side view angle installation schematic diagram of the template for pouring a concrete blocking piece in embodiment 2.

[0039] Figure 3This is a top view of the installation of a formwork for pouring concrete sealing components in Example 2;

[0040] Figure 4 This is a step diagram of a construction method in Example 3.

[0041] The markings in the diagram are: 1-square tube formwork, 2-channel component, 3-fixing nut, 4-connecting rod, 5-first fixing component, 6-second fixing component, 7-embedded steel bar, 8-sealing component body, 9-beam body. Detailed Implementation

[0042] The present invention will be further described in detail below with reference to experimental examples and specific embodiments. However, this should not be construed as limiting the scope of the above-mentioned subject matter of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0043] Example 1

[0044] like Figure 1 As shown, a concrete sealing component includes a sealing component body 8, which is disposed on the top surface of the beam 9 along the bridge direction. The sealing component body 8 is located outside the embedded steel bars 7 of the crash barrier. The sealing component body 8 is cast in concrete, and the outer formwork of the crash barrier is located on the top surface of the sealing component body 8. The cross-section of the sealing component body 8 is rectangular, and the outer surface of the sealing component body 8 is flush with the outer flange of the beam 9. The height of the top surface of the sealing component body is equal to the height of the top surface of the crash barrier minus the height of the crash barrier itself minus an error value; in this embodiment, the error value is 5 cm.

[0045] Example 2

[0046] like Figure 1 As shown, a template for pouring concrete sealing components includes a template body and a fixing device. The template body is connected to the fixing device, and the fixing device is detachably connected to the embedded steel bars 7 of the beam 9. The template body is located outside the embedded steel bars 7. The template body is used to pour a concrete sealing component as described in Example 1. The template body can be adjusted along the longitudinal direction of the bridge.

[0047] like Figure 1As shown, the template body comprises a square template 1 and a wooden template body, the fixing device is a groove-shaped piece 2, and the wooden template body is not shown in the figure. The wooden template body is located between the square template 1 and the embedded steel bar 7. The square template 1 is arranged on one side of the flange of the beam body 9 along the length direction of the bridge, so that the square template 1 can be as parallel to the length direction of the bridge as possible, the blocking member body 8 can be as parallel to the length direction of the bridge as possible, and thus the quality of the blocking member body 8 can be as good as possible, thereby facilitating the improvement of the quality of the crash barrier. The top surface height of the square template 1 is adapted to the top surface height of the blocking member body. The groove-shaped piece 2 is clamped along the width direction of the square template 1. The groove-shaped piece 2 is connected to the embedded steel bar 7 through a connecting rod 4. The connecting rod 4 is divided into a parallel part and a vertical part. The vertical part penetrates through two plates on both sides of the opening of the groove-shaped piece 2 and is connected through a fixing nut 3. The parallel part is connected to the embedded steel bar 7 through a first fixing piece 5 and a second fixing piece 6, and the end of the parallel part exceeds the embedded steel bar 7. Therefore, when adjusting the groove-shaped piece 2, it is convenient to operate, thereby avoiding the operator to operate outside the embedded steel bar 7 and reducing the danger of high-altitude operation. In the embodiment, the first fixing piece 5 comprises a butterfly buckle, and the second fixing piece 6 comprises a fixing nut and a gasket. The embedded steel bar 7 is the framework of the crash barrier and can position and support the crash barrier.

[0048] The opening width of the groove-shaped piece 2 is 1-2 cm larger than the width of the square template 1. Therefore, in the case that the square template 1 is placed in the groove-shaped piece 2 with sufficient space, the space is not too large, so that the square template 1 is easy to move inside the groove-shaped piece 2, which is beneficial to the stability of the device and thus ensures the construction quality of the blocking member body 8 as much as possible. A gasket is further arranged between the groove-shaped piece 2 and the square template 1, which can fix the relative positions of the square template 1 and the groove-shaped piece 2, is beneficial to the stability of the device and also beneficial to the quality of the blocking member body 8. Moreover, the square template 1 and the groove-shaped piece 2 are relatively fixed, so that when adjusting the position of the square template 1, the square template 1 can be directly moved by adjusting the position of the groove-shaped piece 2, which is convenient to operate. In the embodiment, the square template 1 is 5 m long. Two groove-shaped pieces 2 are arranged at 0.5 m and 4.5 m of the square template 1 respectively.

[0049] Embodiment 3

[0050] As shown in Figure 4 A construction method using the concrete blocking member template of embodiment 2 comprises the following steps:

[0051] S1, first measure and loft every distance on the beam body 9 flange plate to determine the actual elevation of the beam top, to determine the height of the outside formwork body elevation band of the blocking crash barrier, use a tape measure to determine the position of the top of the elevation band and control the line, use the square tube formwork 1 to tightly adhere to the beam body 9 flange plate, and adjust the top surface of the square tube formwork 1 to be consistent with the position of the line, the square tube formwork is used as the outside form of the blocking member body 8, finally embed the crash wall reinforcement on the top of the beam body 9, install the wooden formwork body as the inside form of the blocking member body 8, and connect the first fixing member 5 of the square tube formwork 1 to the embedded reinforcement 7;

[0052] S2, pour the blocking member body 8 of the section;

[0053] S3, move the formwork body along the bridge direction to the next section, and cycle steps S1 and S2 until the pouring of the blocking member body 8 of the entire bridge is completed.

[0054] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A form for casting a concrete plug, characterized by, The template body is used for pouring a concrete blocking member, and comprises a first template and a second template, the first template is located outside the second template, the first template is connected to the fixing device, the fixing device is detachably connected to embedded steel bars (7), and the template body can move along the bridge direction. The concrete blocking member comprises a blocking member body (8) arranged on the top surface of a beam body (9) along the bridge direction, the blocking member body (8) is located outside the embedded steel bars (7) of a crash barrier, the blocking member body (8) is poured by concrete, and the outer mold of the crash barrier is located on the top surface of the blocking member body (8); the outer side surface of the blocking member body (8) is flush with the outer side of the flange of the beam body (9). The fixing device comprises a groove-shaped part (2) for fixing the template body. The groove-shaped part (2) is connected to the embedded steel bars (7) through a connecting rod (4), and one end of the connecting rod (4) away from the template body exceeds the embedded steel bars (7). The opening width of the groove-shaped part (2) is 1-2 cm larger than the width of the template body. The construction method of the concrete blocking member comprises the following steps: S1, install the template for pouring the concrete blocking member, first measure the actual elevation of the beam top on the flange plate of the beam body (9) at intervals to determine the height of the blocking member body elevation belt outside the crash barrier, determine the position of the top of the elevation belt with a tape measure and control it with a line, use a square tube template (1) to tightly contact the flange plate of the beam body (9), and adjust the top surface of the square tube template (1) to be consistent with the position of the line, the square tube template (1) is used as the outer side mold of the blocking member body (8), and finally, the wood template body is installed as the inner side mold of the blocking member body (8) on the top of the beam body (9) embedded with crash wall steel bars, and the first fixing part (5) of the square tube template (1) is connected to the embedded steel bars (7); S2, pour the blocking member body (8) in the template body; S3, move the template body to the next section along the bridge direction, and repeat steps S1 and S2 until the blocking member body (8) of the whole bridge is poured.

2. A formwork for casting concrete plugs according to claim 1, characterised in that, The groove-shaped part (2) and the template body are further provided with a cushion block.

3. A formwork for casting concrete plugs according to any one of claims 1-2, characterized in that, The fixing device has a plurality of fixing devices, and the fixing devices are distributed at intervals along the length direction of the template body.

4. A form for casting a concrete plug as defined in claim 3, wherein, The concrete strength of the blocking member body (8) poured in step S3 is equal to the concrete strength used for pouring the crash barrier.

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