Grouting sleeve for connecting bridge deck steel bars, bridge deck structure and bridge

Abstract

The utility model relates to the technical field of concrete bridge construction, in particular to a grouting sleeve used for connecting bridge face plate steel bars, a bridge floor structure and a bridge, the grouting sleeve comprises a sleeve body, end sockets and grouting pipes, the steel bars of two adjacent bridge face plates can stretch into the sleeve body from the two ends of the sleeve body respectively, and the end sockets are connected with the grouting pipes. The sealing heads are arranged on the steel bars in a sleeving mode and can block the two ends of the cylinder body, and the grouting pipe is connected to the side wall of the cylinder body and communicates with an inner cavity of the cylinder body. The grouting sleeve only needs to be installed and poured when the bridge panels are closed, the reinforcing steel bars of the bridge panels on the two sides are integrally fixed through concrete, the assembling and pouring process is simple, operation is convenient, efficiency is high, and the problem of welding defects is avoided; the tensile and shearing resistance is higher than that of a welding seam, and the connection performance is better.

Description

Technical Field

[0001] This utility model relates to the field of concrete bridge construction technology, and in particular to a grouting sleeve for connecting the reinforcing bars of a bridge deck, a bridge deck structure, and a bridge. Background Technology

[0002] With the rapid development of transportation infrastructure construction, steel-concrete composite beam bridges have been widely used in modern bridge engineering. As an important component of steel-concrete composite beam bridges, precast assembled concrete bridge decks, with their significant advantages in industrialized production and assembly construction, have gradually become the preferred solution in bridge construction. Although precast assembled concrete bridge decks for steel-concrete composite beams have many advantages, their conventional connection methods still face significant technical bottlenecks in practical applications. Conventional solutions typically employ an A-B plate design, where extended longitudinal main reinforcing bars are arranged at the joint, and the butt-jointed reinforcing bars on both sides are welded together through a wet joint to form an integral load-bearing member. However, in wet joint areas, the small transverse spacing of the reinforcing bars easily leads to the following problems: First, the design of wet joints is complex, and the cross-layout of the reinforcing bars, limited by space, is difficult to adapt to complex bridge types such as curved bridges; second, the installation of the bridge deck increases, the requirements for plate butt joints and welding quality are high, the number of reinforcing bars to be welded is too large, the workload is huge, affecting construction efficiency and making it difficult to guarantee welding quality; third, due to the dense arrangement of reinforcing bars at wet joints, it is difficult to effectively place enough shear studs on the upper flange of the steel beam, directly relying on the weld for shear resistance, thus weakening the shear resistance between the bridge deck and the steel beam. These problems limit the application effect of conventional prefabricated construction methods under specific working conditions, and there is an urgent need to improve existing technologies to enhance adaptability and construction convenience. Utility Model Content

[0003] The purpose of this utility model is to overcome the technical problems of the existing technology, which involves a large amount of construction work, low efficiency, difficulty in ensuring welding quality, and easy weakening of the shear resistance between bridge decks by welding the steel bars between the two bridge decks. The present invention provides a grouting sleeve for connecting the steel bars of bridge decks, a bridge deck structure, and a bridge.

[0004] In a first aspect, the present invention provides a grouting sleeve for connecting the reinforcing bars of bridge decks, comprising a cylinder and a grouting pipe, wherein the reinforcing bars of two adjacent bridge decks can be respectively inserted into the cylinder from both ends of the cylinder and fixed therein, and the grouting pipe is connected to the side wall of the cylinder and communicates with the inner cavity of the cylinder.

[0005] The grouting sleeve of this application can simultaneously fix the reinforcing bars of bridge decks on both sides. During construction, the grouting sleeve can be placed on the reinforcing bars of one side of the bridge deck before the two bridge decks are joined. During the joining process, the reinforcing bars of the other side of the bridge deck can be aligned with the other end of the grouting sleeve and inserted into the sleeve. After sealing both ends of the sleeve, concrete is poured into the inner cavity of the sleeve through the grouting pipe on the sleeve. The reinforcing bars in the sleeve are fixed and connected by the poured concrete. Finally, the grouting sleeve and the reinforcing bars of the bridge decks on both sides can be cast to form a fixed integral structure. Finally, concrete can be further poured between the multiple reinforcing bars at the joint of the bridge decks on both sides, that is, on the outside of the grouting sleeve, to complete the process. This invention provides an integral splicing method between two bridge decks. Compared to the traditional method of welding the reinforcing bars on both sides, which suffers from the drawbacks of inconsistent welding quality and a large amount of welding work, the grouting sleeve of this application only needs to be installed and poured when the bridge decks are joined. The reinforcing bars of the bridge decks on both sides are fixed as a whole by concrete. Its assembly and pouring process is simple, convenient and efficient, and avoids the problem of welding defects. In addition, the connection structure between the concrete and the reinforcing bars formed by pouring in the grouting sleeve has higher tensile and shear resistance than the weld. Under the condition of qualified strength, shear studs can be omitted, which also avoids to some extent the technical problem of insufficient space for shear studs due to the dense arrangement of reinforcing bars at wet joints.

[0006] Preferably, it also includes a cap, an annular space is formed between the cylinder and the reinforcing bar, two reinforcing bars extending into the cylinder from both ends of the cylinder can be joined together in the cylinder, the annular space is connected to the grouting pipe, and the cap is sleeved on the reinforcing bar and can seal both ends of the cylinder.

[0007] Preferably, the inner wall of the cylinder matches the outer wall of the reinforcing bar and can be axially fixed, and a casting space is formed between the two reinforcing bars in the cylinder, the casting space being connected to the grouting pipe.

[0008] Preferably, it further includes an end cap, an annular space is formed between the cylinder and the reinforcing bar, a casting space is formed between two reinforcing bars in the cylinder, the annular space is connected to the casting space, the grouting pipe is connected to the annular space or the casting space, and the end cap is sleeved on the reinforcing bar and can seal both ends of the cylinder.

[0009] Preferably, two grouting pipes are connected to the side wall of the cylinder, and the two grouting pipes are respectively connected to the side wall of the cylinder corresponding to the two reinforcing bars.

[0010] Preferably, the grouting pipe extends above the bridge deck.

[0011] Preferably, the end cap and the cylinder are connected by a snap-fit ​​connection.

[0012] Preferably, air holes are provided on the side wall of the cylinder.

[0013] In a second aspect, the present invention provides a bridge deck structure comprising a plurality of bridge panels spliced ​​together, wherein a grouting sleeve for connecting the reinforcing bars of the bridge panels as described above is installed between two adjacent bridge panels.

[0014] In a third aspect, the present invention provides a bridge, including a beam body and a bridge deck structure as described above, wherein the bridge deck structure is disposed on the beam body.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This utility model provides a grouting sleeve for connecting the reinforcing bars of bridge decks, a bridge deck structure, and a bridge. The grouting sleeve of this application can simultaneously connect and fix the reinforcing bars of bridge decks on both sides. During construction, the grouting sleeve can be placed on the reinforcing bars of one side of the bridge deck before the two bridge decks are joined. During joining, the reinforcing bars of the other side of the bridge deck can be aligned with the other end of the grouting sleeve and inserted into the sleeve. After joining, the two ends of the sleeve are sealed using end caps previously fitted onto the reinforcing bars. Then, concrete is poured into the inner cavity of the sleeve through the grouting pipe on the sleeve, fixing the reinforcing bars in the sleeve to the concrete. Finally, the grouting sleeve and the reinforcing bars of the bridge decks on both sides can be cast into a fixed integral structure. Finally, multiple reinforcing bars at the joints of the bridge decks on both sides can be connected. Between the two bridge decks, concrete is further poured on the outside of the grouting sleeve to complete the overall splicing between the two bridge decks. Compared with the traditional method of welding the steel bars on both sides, which cannot guarantee the welding quality and has a huge amount of welding work, the grouting sleeve of this application only needs to be installed and poured when the bridge deck is closed. The steel bars of the bridge deck on both sides are fixed as a whole by concrete. Its assembly and pouring process is simple, convenient and efficient, and avoids the problem of welding defects. In addition, the connection structure between the concrete and steel bars formed in the grouting sleeve has higher tensile and shear resistance than the weld. Under the condition of qualified strength, shear studs can be omitted, which also avoids to a certain extent the technical problem of insufficient space to install shear studs due to the dense arrangement of steel bars at wet joints. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the grouting sleeve for connecting bridge deck reinforcement bars of this utility model, installed on the bridge deck reinforcement bars.

[0018] Figure 2 This is a first cross-sectional view of the grouting sleeve for connecting the reinforcing bars of bridge deck according to the present invention.

[0019] Figure 3This is a second cross-sectional view of the grouting sleeve for connecting the reinforcing bars of bridge deck according to the present invention.

[0020] Figure 4 This is a third cross-sectional view of the grouting sleeve for connecting the reinforcing bars of bridge deck according to this utility model.

[0021] Marked in the image:

[0022] 1. Cylinder body, 2. End cap, 3. Grouting pipe, 4. Reinforcing steel, 5. Annular space, 6. Casting space, 7. Bridge deck, 8. Vent. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope 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.

[0024] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0025] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0026] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0027] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0028] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0029] Example 1

[0030] This embodiment provides a grouting sleeve for connecting the reinforcing bars of a bridge deck.

[0031] Figure 1 This is a three-dimensional schematic diagram of the grouting sleeve for connecting bridge deck reinforcement bars of the present invention installed on the bridge deck reinforcement bars. Figure 2 This is a first sectional view of the grouting sleeve for connecting the reinforcing bars of bridge deck according to the present invention. Figure 3 This is a second sectional view of the grouting sleeve for connecting the reinforcing bars of bridge deck according to the present invention. Figure 4 This is a third cross-sectional view of the grouting sleeve for connecting the reinforcing bars of bridge deck according to this utility model.

[0032] like Figures 1 to 4 As shown in the figure, the grouting sleeve for connecting the reinforcing bars of the bridge deck 7 described in this embodiment may include a cylinder 1 and a grouting pipe 3. The cylinder 1 is a hollow tubular structure with an inner diameter larger than the reinforcing bars 4 of the bridge deck 7. The reinforcing bars 4 of two adjacent bridge deck 7 can extend into the cylinder 1 from both ends. The two ends of the cylinder 1 can be sealed. The grouting pipe 3 is connected to the side wall of the cylinder 1 and communicates with the inner cavity of the cylinder 1. Concrete can be poured into the cylinder 1 through the grouting pipe 3, and the reinforcing bars 4 passing through the cylinder 1 are embedded in the concrete injected into the cylinder 1.

[0033] The grouting sleeve of this application can simultaneously connect and fix the reinforcing bars 4 of the bridge deck 7 on both sides. During construction, the grouting sleeve can be placed on the reinforcing bars 4 of one side of the bridge deck 7 before the two bridge decks 7 are joined. When joining, the reinforcing bars 4 of the other side of the bridge deck 7 can be aligned with the other end of the grouting sleeve and inserted into the sleeve body 1. After joining, the two ends of the sleeve body 1 can be sealed, and then concrete can be poured into the inner cavity of the sleeve body 1 through the grouting pipe 3 on the sleeve body 1. The reinforcing bars 4 in the sleeve body 1 can be fixed and connected by the poured concrete. Finally, the grouting sleeve and the reinforcing bars 4 of the bridge decks 7 on both sides can be cast to form a fixed integral structure. Finally, further concrete can be poured between the multiple reinforcing bars 4 at the joint of the bridge decks 7 on both sides, that is, on the outside of the grouting sleeve. Concrete is poured to complete the overall splicing between the two bridge decks 7. Compared with the traditional method of welding the steel bars 4 on both sides, which cannot guarantee the welding quality and has a huge amount of welding work, the grouting sleeve of this application only needs to be installed and poured when the bridge deck 7 is closed. The steel bars 4 of the bridge deck 7 on both sides are fixed as a whole by concrete. Its assembly and pouring process is simple, convenient and efficient, and avoids the problem of welding defects. In addition, the connection structure between the concrete and the steel bars 4 formed by pouring in the grouting sleeve has higher tensile and shear resistance than the weld. Under the condition of qualified strength, shear studs can be omitted. It also avoids to a certain extent the technical problem of insufficient space to install shear studs due to the dense arrangement of steel bars 4 at wet joints.

[0034] In this embodiment, as Figure 2The first type of grouting sleeve structure shown also includes a cap 2 with a through hole. The cap 2 can be fitted onto the reinforcing bar 4 and can seal both ends of the cylinder 1. An annular space 5 is formed between the cylinder 1 and the reinforcing bar 4. Two reinforcing bars 4 extending from both ends of the cylinder 1 into the cylinder 1 can be joined together in the cylinder 1. The annular space 5 is connected to the grouting pipe 3. Here, the annular space 5 can be formed between the inner wall of the cylinder 1 and the outer wall of the reinforcing bar 4. After the cylinder 1 is fitted onto the reinforcing bar 4 and connected to the caps 2 at both ends, the reinforcing bar 4 can be suspended in the cylinder 1, thereby forming an annular space 5 between the inner wall of the cylinder 1 and the outer wall of the reinforcing bar 4. The two reinforcing bars 4 can abut against each other in the cylinder 1, so that the annular space 5 between the two reinforcing bars 4 and the cylinder 1 is connected to form a... The grouting pipe 3 is connected to the side wall of the cylinder 1 and can communicate with the annular space 5. During pouring, concrete can be injected into the annular space 5 through the grouting pipe 3. The concrete can fill the annular space 5 and at the same time, the reinforcing bars 4 are embedded in the concrete for fixation. Since the concrete bridge deck 7 usually uses threaded reinforcing bars, when the concrete is poured into the annular space 5 and the threaded reinforcing bars are embedded, the contact surface between the concrete and the threaded reinforcing bars can also have a threaded structure. The threaded structure of the concrete contact surface can match the threaded structure of the threaded reinforcing bars, thereby axially positioning the reinforcing bars 4 and preventing the two reinforcing bars 4 from separating and detaching after docking. The grouting sleeve and the two reinforcing bars 4 after pouring can form a fixed integrated structure, thereby realizing the fixed connection between the two bridge decks 7.

[0035] exist Figure 2 In the first type of grouting sleeve structure shown, there can be only one or more grouting pipes 3. The grouting pipes 3 can be located on the side wall of the cylinder 1 corresponding to the annular space 5, that is, the grouting pipes 3 can be connected to the annular space 5. In addition, air holes 8 can be opened on the side wall of the cylinder 1 corresponding to the annular space 5. The air holes 8 can be opened at the top of the cylinder 1. When pouring concrete into the pouring space 6, the air in the pouring space 6 can be discharged through the air holes 8. At the same time, the pouring space can be judged by observing whether concrete is emerging from the air holes 8. Whether the concrete in the 6th cavity is full or not, that is, when concrete is observed to emerge from the vent 8, it means that the concrete in the pouring space 6 is full and the pouring can be stopped. Of course, when there are multiple grouting pipes 3, the vent 8 does not need to be opened on the cylinder 1. Grout can be injected into one of the grouting pipes 3 during pouring, and the other grouting pipes 3 can act as vent 8, and can also be used for venting and judging whether the concrete is full. This utility model does not limit the number of grouting pipes 3 or whether to open vent 8 separately when there are multiple grouting pipes 3.

[0036] In this embodiment, as Figure 3The second type of grouting sleeve structure shown has an inner wall of cylinder 1 that mates with the outer wall of reinforcing bar 4 and can be axially fixed. A casting space 6 is formed between the two reinforcing bars 4 in cylinder 1, and the casting space 6 is connected to the grouting pipe 3. Here, the reinforcing bar 4 can be a threaded reinforcing bar with an external thread structure. An internal thread structure that mates with the external thread structure of the threaded reinforcing bar can be set on the inner wall of cylinder 1. The inner diameter of cylinder 1 is selected to be consistent with the outer diameter of the threaded reinforcing bar. When installing cylinder 1, cylinder 1 can be screwed onto reinforcing bar 4 through the mating of internal and external threads (the thread mating structure between threaded reinforcing bar and cylinder 1 is not shown in the figure). Specifically, in order to connect both ends of cylinder 1 to the two reinforcing bars 4 respectively through threads, cylinder 1 can be designed as a two-section structure that can rotate relative to each other. After one section of cylinder 1 is threadedly connected to one side of reinforcing bar 4, the other section of cylinder 1 can be rotated while the first section of cylinder 1 remains fixed. One section of the cylindrical body 1 can be fitted onto the other section of the reinforcing bar 4. The two sections of the cylindrical body 1 can be connected by a structure similar to a bearing, which can maintain the axial fixation between the two sections of the cylindrical body 1 and allow the two sections of the cylindrical body 1 to rotate relative to each other in the circumferential direction (the structure of the two sections of the cylindrical body 1 that can rotate freely is not shown in the diagram). In the grouting sleeve of the second structure, the two reinforcing bars 4 are not in contact and are separated by a pouring space 6. Concrete can be poured into the pouring space 6 through the grouting pipe 3. The concrete can fill the pouring space 6. That is to say, the concrete in the pouring space 6 can be located between the two reinforcing bars 4. At this time, the axial positioning between the two reinforcing bars 4 mainly relies on the internal and external thread fit with the cylindrical body 1. In addition, the concrete poured in the pouring space 6 can also attract the two reinforcing bars 4 on both sides to prevent the two reinforcing bars 4 from moving in the opposite direction and detaching from the concrete.

[0037] exist Figure 3 In the second type of grouting sleeve structure shown, the grouting pipe 3 and the cylinder 1 can be detachably connected, for example, by threaded connection. Before the cylinder 1 is screwed into the reinforcing bar 4 through the external thread of the threaded reinforcing bar, in order to avoid the grouting pipe 3 from interfering with other reinforcing bars 4 as the cylinder 1 rotates, the grouting pipe 3 can be removed from the cylinder 1 first. After the cylinder 1 is screwed into place, the grouting pipe 3 is then installed onto the grouting hole on the cylinder 1.

[0038] exist Figure 3In the second type of grouting sleeve structure shown, there can be only one grouting pipe 3. The grouting pipe 3 can be located on the side wall of the cylinder 1 corresponding to the pouring space 6, that is, the grouting pipe 3 can be connected to the pouring space 6. In addition, air holes 8 can be opened on the side wall of the cylinder 1 corresponding to the pouring space 6. The air holes 8 can be opened at the top of the cylinder 1. When pouring concrete into the pouring space 6, the air originally in the pouring space 6 can be discharged through the air holes 8. At the same time, it can be determined whether the concrete in the pouring space 6 is full by observing whether concrete is emerging from the air holes 8. In other words, when concrete is observed emerging from the vent 8, it means that the concrete in the pouring space 6 has been filled and pouring can be stopped. Of course, the number of grouting pipes 3 can also be more than one, such as two. In this case, it is not necessary to open vents 8 on the cylinder 1. Grout can be injected into one of the grouting pipes 3 during pouring. The other grouting pipes 3 can act as vents 8, and can also be used for venting and judging whether the concrete is filled. This utility model does not limit the number of grouting pipes 3 or whether to open vents 8 separately when there are multiple grouting pipes 3.

[0039] In this embodiment, as Figure 4 The third type of grouting sleeve structure shown also includes a cap 2 with a through hole. The cap 2 can be fitted onto the reinforcing bar 4 and can seal both ends of the cylinder 1. An annular space 5 is formed between the cylinder 1 and the reinforcing bar 4. A casting space 6 is formed between the two reinforcing bars 4 in the cylinder 1. The annular space 5 and the casting space 6 are connected. The grouting pipe 3 is connected to either the annular space 5 or the casting space 6. Here, the annular space 5 can be formed between the inner wall of the cylinder 1 and the outer wall of the reinforcing bar 4. After the cylinder 1 is fitted onto the reinforcing bar 4 and connected to the caps 2 at both ends, the reinforcing bar 4 can be suspended in the cylinder 1, thereby forming an annular space 5 between the inner wall of the cylinder 1 and the outer wall of the reinforcing bar 4. At the same time, there is no connection between the two reinforcing bars 4. The two reinforcing bars 6 are separated by a gap, and concrete can be poured into the casting space 6 and the annular space 5 through the grouting pipe 3. The concrete can fill the casting space 6 and the annular space 5. That is to say, the concrete in the casting space 6 can be located between the two reinforcing bars 4 and wrapped around the outer wall of the two reinforcing bars 4 at the same time. The contact surface between the concrete in the annular space 5 and the outer wall of the threaded reinforcing bar can be threaded. The threaded structure of the concrete contact surface can match the threaded structure of the threaded reinforcing bar. The concrete in the casting space 6 can also attract the end faces of the two reinforcing bars 4 on both sides. The two work together to achieve axial positioning of the reinforcing bars 4 and prevent the two reinforcing bars 4 from moving in opposite directions and separating from the concrete.

[0040] exist Figure 4In the third type of grouting sleeve structure shown, the number of grouting pipes 3 can be one or more. The grouting pipes 3 can be located on the side wall of the cylinder 1 corresponding to the annular space 5 or the casting space 6, meaning the grouting pipes 3 can be directly connected to the annular space 5 or the casting space 6. For example, when there are two grouting pipes 3, the two grouting pipes 3 can be respectively set on the side wall of the cylinder 1 corresponding to the two reinforcing bars 4, so that the two grouting pipes 3 can be respectively connected to the two sections of the annular space 5 corresponding to the two reinforcing bars 4. For example, when there are three grouting pipes 3, one grouting pipe 3 can be set on the side wall of the cylinder 1 corresponding to the casting space 6, and the other two grouting pipes 3 can be respectively set on the side wall of the cylinder 1 corresponding to the two reinforcing bars 4. Additionally, air holes 8 can be opened on the side wall of the cylinder 1 corresponding to the annular space 5. The vent 8 can be located at the top of the cylinder 1. When pouring concrete into the pouring space 6, the air in the pouring space 6 can be discharged through the vent 8. At the same time, it can be determined whether the concrete in the pouring space 6 is full by observing whether concrete is emerging from the vent 8. That is to say, when concrete is observed emerging from the vent 8, it means that the concrete in the pouring space 6 is full and pouring can be stopped. Of course, when there are multiple grouting pipes 3, the vent 8 does not need to be opened on the cylinder 1. Grout can be injected into one of the grouting pipes 3 during pouring, and the other grouting pipes 3 can act as vent 8, and can also be used for venting and determining whether the concrete is full. This utility model does not limit the number of grouting pipes 3 or whether to open vent 8 separately when there are multiple grouting pipes 3.

[0041] It should be noted that if there are air holes 8 on the cylinder 1 and only one grouting pipe 3, then during the pouring process, the concrete can only be poured into the cylinder 1 first, and then the area at the joint of the bridge panel 7 between the various reinforcing bars 4 on the outside of the cylinder 1 can be poured. Otherwise, after the air holes 8 are blocked by the concrete on the outside, it will be impossible to pour into the cylinder 1. Of course, if there are multiple grouting pipes 3 on the cylinder 1, the pouring sequence can be selected during the pouring process. The concrete can be poured into the cylinder 1 first, and then the area at the joint of the bridge panel 7 between the various reinforcing bars 4 on the outside of the cylinder 1 can be poured, or the area at the joint of the bridge panel 7 between the various reinforcing bars 4 on the outside of the cylinder 1 can be poured first, and then the concrete can be poured into the cylinder 1.

[0042] In this embodiment, the grouting pipe 3 extends above the bridge deck 7. The appropriate length of the grouting pipe 3 can be selected during the design. For example, the grouting pipe 3 can extend above the bridge deck 7. If the pouring sequence is adopted, first pouring the area at the joint of the bridge deck 7 between the various steel bars 4 outside the cylinder 1, and then pouring into the cylinder 1, the grouting pipe 3 extending above the bridge deck 7 can make it easier to identify the position of the grouting pipe 3, thereby facilitating the pouring inside the cylinder 1.

[0043] In this embodiment, the end cap 2 and the cylinder 1 can be connected by a snap fastener (not shown in the figure); the snap fastener can seal the end cap 2 at both ends of the cylinder 1 to prevent the concrete poured into the cylinder 1 from leaking from the connection between the two ends of the cylinder 1 and the end cap 2; of course, the end cap 2 and the cylinder 1 can also be connected by other connection methods, such as threaded connection, etc. This utility model does not specifically limit the connection method between the end cap 2 and the cylinder 1, as long as the end cap 2 can be used to seal both ends of the cylinder 1.

[0044] Example 2

[0045] This embodiment provides a bridge deck structure.

[0046] The bridge deck structure described in this embodiment may include multiple bridge panels 7 (not shown in the figure), and a grouting sleeve for connecting the reinforcing bars of the bridge panels as described in Embodiment 1 is installed between two adjacent bridge panels 7.

[0047] It should be noted that the grouting sleeve used for connecting the reinforcing bars of the bridge deck in this embodiment is the same as the grouting sleeve used for connecting the reinforcing bars of the bridge deck in Embodiment 1, and will not be described in detail in this embodiment.

[0048] Example 3

[0049] This embodiment provides a bridge.

[0050] The bridge described in this embodiment may include a beam (not shown in the figure) and a bridge deck structure as described in Embodiment 2, wherein the bridge deck structure is disposed on the beam.

[0051] It should be noted that the bridge deck structure described in this embodiment is the same as that described in Embodiment 2, and will not be described in detail here.

[0052] In summary, this utility model provides a grouting sleeve for connecting the reinforcing bars of bridge decks, a bridge deck structure, and a bridge. The grouting sleeve of this application can simultaneously connect and fix the reinforcing bars of bridge decks on both sides. During construction, the grouting sleeve can be placed on the reinforcing bars of one side of the bridge deck before the two bridge decks are joined. During joining, the reinforcing bars of the other side of the bridge deck can be aligned with the other end of the grouting sleeve and inserted into the sleeve. After joining, the two ends of the sleeve are sealed using end caps previously fitted onto the reinforcing bars. Then, concrete is poured into the inner cavity of the sleeve through the grouting pipe on the sleeve, fixing the reinforcing bars in the sleeve. Finally, the grouting sleeve and the reinforcing bars of the bridge decks on both sides can be cast into a fixed integral structure. Finally, multiple joints at the bridge decks on both sides can be connected. Concrete is further poured between the reinforcing bars, that is, on the outside of the grouting sleeve, to complete the overall splicing between the two bridge decks. Compared with the technical defects of traditional methods that weld the reinforcing bars on both sides, which cannot guarantee the welding quality and have a huge amount of welding work, the grouting sleeve of this application only needs to be installed and poured when the bridge deck is closed. The reinforcing bars of the bridge deck on both sides are fixed as a whole by concrete. Its assembly and pouring process is simple, convenient and efficient, and avoids the problem of welding defects. In addition, the connection structure between the concrete and the reinforcing bars formed in the grouting sleeve has higher tensile and shear resistance than the weld. Under the condition of qualified strength, shear studs can be omitted, which also avoids to a certain extent the technical problem of insufficient space for shear studs due to the dense arrangement of reinforcing bars at wet joints.

[0053] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A grouting sleeve for connecting reinforcing bars in bridge decks, characterized in that, Includes a cylinder (1) and a grouting pipe (3). The steel bars (4) of two adjacent bridge decks (7) can be inserted into the cylinder (1) from both ends and fixed. The grouting pipe (3) is connected to the side wall of the cylinder (1) and communicates with the inner cavity of the cylinder (1).

2. The grouting sleeve for connecting bridge deck reinforcement according to claim 1, characterized in that, It also includes a cap (2), an annular space (5) is formed between the cylinder (1) and the reinforcing bar (4), two reinforcing bars (4) extending from both ends of the cylinder (1) into the cylinder (1) can be joined together in the cylinder (1), the annular space (5) is connected to the grouting pipe (3), and the cap (2) is sleeved on the reinforcing bar (4) and can seal both ends of the cylinder (1).

3. The grouting sleeve for connecting bridge deck reinforcement according to claim 1, characterized in that, The inner wall of the cylinder (1) is fitted with the outer wall of the reinforcing bar (4) and can be axially fixed. A casting space (6) is formed between the two reinforcing bars (4) in the cylinder (1), and the casting space (6) is connected to the grouting pipe (3).

4. The grouting sleeve for connecting bridge deck reinforcement according to claim 1, characterized in that, It also includes a cap (2), an annular space (5) is formed between the cylinder (1) and the reinforcing bar (4), a casting space (6) is formed between the two reinforcing bars (4) in the cylinder (1), the annular space (5) is connected to the casting space (6), the grouting pipe (3) is connected to the annular space (5) or the casting space (6), and the cap (2) is fitted on the reinforcing bar (4) and can seal both ends of the cylinder (1).

5. The grouting sleeve for connecting bridge deck reinforcement according to claim 4, characterized in that, Two grouting pipes (3) are connected to the side wall of the cylinder (1), and the two grouting pipes (3) are respectively connected to the side wall of the cylinder (1) corresponding to the two steel bars (4).

6. The grouting sleeve for connecting bridge deck reinforcement according to any one of claims 1 to 5, characterized in that, The grouting pipe (3) extends above the bridge deck (7).

7. The grouting sleeve for connecting bridge deck reinforcement according to claim 2, 4, or 5, characterized in that, The end cap (2) is connected to the cylinder (1) by a snap fastener.

8. The grouting sleeve for connecting bridge deck reinforcement according to any one of claims 1 to 5, characterized in that, Air holes (8) are provided on the side wall of the cylinder (1).

9. A bridge deck structure, characterized in that, It includes several bridge panels (7) spliced ​​together, and a grouting sleeve for connecting the reinforcing bars of the bridge panels as described in any one of claims 1 to 8 is installed between two adjacent bridge panels (7).

10. A bridge, characterized in that, It includes a beam body and the bridge deck structure as described in claim 9, wherein the bridge deck structure is disposed on the beam body.

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