阅读说明：本技术 设有中置式剪力铰的浮置道床 (Floating track bed with centrally-mounted shear hinges ) 是由 尹学军 迟建平 卢庆亮 王建立 芦睿泉 王乾安 殷险峰 朱文海 李克先 孔祥斐 于 2020-12-30 设计创作，主要内容包括：本发明属于铁路道床领域,公开了一种设有中置式剪力铰的浮置道床,其包括浮置板和弹性隔振装置,相邻浮置板之间通过中置式剪力铰相连,中置式剪力铰包括至少局部呈板状的抗剪承力件、浮置板端部对应设置的装配槽以及浮置板上设置的限位装置,装配槽设置在浮置板板端的板厚方向中部并且在浮置板端面处与外部连通开放设置,抗剪承力件的板状部分分别嵌设在相邻浮置板上对应设置的装配槽内,连接相邻浮置板,利用限位装置将抗剪承力件锁定在装配槽内。本发明施工效率高,中置式剪力铰后期维护便利,浮置道床结构中的浮置板受力更合理,使用寿命更长,可以广泛应用于地铁、城市铁路、高架轻轨、高铁等各种轨道交通形式中。(The invention belongs to the field of railway track beds, and discloses a floating track bed with a central shear hinge, which comprises floating plates and an elastic vibration isolation device, wherein adjacent floating plates are connected through the central shear hinge, the central shear hinge comprises a shearing-resistant bearing part which is at least partially plate-shaped, an assembly groove correspondingly arranged at the end part of each floating plate and a limiting device arranged on each floating plate, the assembly groove is arranged in the middle of the plate thickness direction of the plate end of each floating plate and is communicated with the outside at the end surface of each floating plate to be opened, the plate-shaped parts of the shearing-resistant bearing part are respectively embedded in the assembly grooves correspondingly arranged on the adjacent floating plates to connect the adjacent floating plates, and the shearing-resistant bearing part is locked in the assembly grooves by the limiting device. The invention has high construction efficiency, convenient later maintenance of the centrally-arranged shear hinges, more reasonable stress of the floating slab in the floating track bed structure and longer service life, and can be widely applied to various track traffic modes such as subways, urban railways, overhead light rails, high-speed rails and the like.)

1. A floating track bed with a middle-arranged shear hinge comprises floating plates and an elastic vibration isolation device, wherein the floating plates are elastically supported by the elastic vibration isolation device, and adjacent floating plates are connected through the middle-arranged shear hinge; the end part of the floating plate is provided with a yielding opening for installing the shear-resistant bearing piece, and the side surface of the yielding opening is communicated with the outside and is opened.

2. The floating track bed with a centrally located shear hinge of claim 1, wherein the side walls of the assembly slots are provided with rims that are pre-cast with the floating slabs.

3. The floating track bed with a centrally located shear hinge of claim 1 wherein one of the relief notches is located intermediate the ends of the floating slab.

4. The floating track bed with a centrally located shear hinge of claim 1, wherein there are two of the relief notches located on either side of the floating slab end.

5. The floating track bed with the centrally-mounted shear hinge as claimed in any one of claims 1 to 4, wherein the limiting device comprises a limiting hole and a limiting column which are correspondingly arranged on the floating slab body and correspond to the assembling groove.

6. The floating track bed with the centrally-mounted shear hinge as claimed in claim 5, wherein the shear-resistant bearing member is provided with a step-down through hole corresponding to the limiting device, and the limiting post is inserted into the limiting hole and the step-down through hole to lock the shear-resistant bearing member in the assembling groove.

7. The floating track bed with the centrally mounted shear hinge as claimed in any one of claims 1 to 4, wherein the limiting means comprises an anchor connector at a relief notch in the floating slab corresponding to the mounting groove.

8. The floating track bed with a centrally-mounted shear hinge as claimed in claim 7, wherein the shear bearing member comprises a shear core plate and a connecting plate, the connecting plate is fixedly arranged at one end of the shear core plate, and the connecting plate is connected with the anchor connector in a matching manner through a fastener so as to lock the shear bearing member in the assembly groove.

9. The floating track bed with a centrally-mounted shear hinge as claimed in claim 7, wherein the anchor connector has a removable limit pin or stop corresponding to the assembly slot, the limit pin or stop being engaged with the anchor connector to lock the shear-resistant load-bearing member in the assembly slot.

10. The floating track bed with a centrally located shear hinge of claim 7 wherein the anchor connection is integral with the rim.

Technical Field

The invention belongs to a railway track bed, and particularly relates to a track structure of a railway, which can be a track bed of a railway, a subway, an urban railway, an overhead light rail, a high-speed railway and the like.

Background

Along with social development and technological progress, the importance of rail transit is increasingly highlighted. The problems of vibration and noise generated during the operation of vehicles must be solved in the construction of rail transit, otherwise, the quality of life of surrounding residents is seriously influenced, the safety of surrounding buildings is endangered, and meanwhile, the stability, the safety and the service life of the rail transit are also influenced.

A large number of engineering practices in the field of rail transit prove that the floating slab track bed technology is one of the most effective track vibration and noise reduction technologies in the prior art, and particularly in subways and urban light rails, the technology is widely applied. In the existing floating track bed structure, the shear hinges are important components of the structure for transferring shear force between adjacent floating slabs, and can share the shear force borne by the steel rail at the slab joint crossing position, so that the slabs are coordinately deformed. At present, the floating slab shear hinge used in large quantity at home and abroad is divided into a central type and an overhead type. The existing middle-mounted shear hinge comprises a shear resistant core rod and a guide contact sleeve, when the middle-mounted shear hinge is used, the middle-mounted shear hinge is located in the center of the section of a plate, the shear resistant core rod and the guide contact sleeve are respectively fixed in adjacent floating plates, and one end of the shear resistant core rod is inserted into the guide contact sleeve. The shear hinge is low in cost, the shear hinge and the steel bar framework of the floating slab are bound together during construction, the shear hinge and the floating slab are fixedly connected into a whole after concrete is poured, the stress is reasonable, and a fixing structure is not required to be additionally arranged. However, such shear hinges cannot be replaced after concrete pouring, and the working state, damage and corrosion of the material of the floating slab cannot be observed from the upper part of the floating slab after the line is operated, so that the maintenance and replacement are very difficult. Although the overhead shear hinge can be installed on the surface of the floating slab, is convenient to construct and easy to adjust and replace, the overhead shear hinge is complex in structure and high in cost due to the fact that a fixing device is required to be specially arranged, and in addition, the concrete structure of the relevant connecting part of the floating slab is easy to damage in the using process.

In summary, there is an urgent need in the market for a new floating slab track bed that not only can be reliably connected to adjacent floating slabs, smoothly transmit shear forces and improve the stress of the floating slab, but also is easy to maintain and replace shear components.

Disclosure of Invention

The invention aims to solve the problems and provides a floating track bed with a central shear hinge, which adopts a central shear hinge structure and is easy to repair and replace shearing resistant components.

The invention is provided with the floating track bed of the middle-mounted shear hinge and realized like this, including floating slab and elastic vibration isolation mounting, the floating slab is supported by elastic vibration isolation mounting elastically, link through the middle-mounted shear hinge between the adjacent floating slabs, the said middle-mounted shear hinge includes the anti-shear force bearing member that takes the form of plateform at least partially, assembly slot and floating slab that the end corresponds to and sets up the stop device on the floating slab that the end of floating slab sets up in the middle part of the plate thickness direction of the board end of the floating slab and communicates with the outside and open and sets up in the end of the floating slab, the platelike part of the anti-shear force bearing member is inlaid in the assembly slot that corresponds to and sets up on the adjacent floating slab respectively, connect the adjacent floating slab, utilize the stop device to lock the anti-shear force bearing member in the assembly slot; the end part of the floating plate is provided with a yielding opening for installing the shear-resistant bearing piece, and the side surface of the yielding opening is communicated with the outside and is opened.

The number and the positions of the abdicating notches on the floating plate can be designed according to requirements, for example, one abdicating notch can be arranged at the end part of the floating plate, and the abdicating notch is specifically positioned in the middle of the plate end of the floating plate; the two abdicating notches can also be arranged on two sides of the plate end of the floating plate, and the like. In addition, in order to prevent the plate body structure of the floating plate from being accidentally damaged due to the fact that the assembly groove and the shear-resistant bearing member are in direct contact and collision with each other in the assembly process or the use process, a frame can be arranged on the side wall of the assembly groove, and the frame and the floating plate are poured into a whole in advance.

The limiting device in the floating track bed provided with the centrally-mounted shear hinge can be various, for example, the limiting device comprises a limiting hole and a limiting column which are arranged on the floating slab body corresponding to the assembly groove, the shear-resistant bearing part is locked in the assembly groove by utilizing the matching of the limiting column and the limiting hole, and certainly, in practical application, a yielding through hole can be arranged on the shear-resistant bearing part corresponding to the limiting device, the limiting column is inserted into the limiting hole and the yielding through hole, and the shear-resistant bearing part is locked in the assembly groove; in addition, stop device also can include the anchor connecting piece that abdicating the opening on the floating plate and correspond the assembly groove setting. When the structure is used specifically, for example, a detachable limit pin shaft or a limit stop is arranged on the anchoring connecting piece corresponding to the assembly groove, and the limit pin shaft or the limit stop is connected with the anchoring connecting piece in a matching way so as to lock the shear-resistant bearing piece in the assembly groove; or the shear-resistant bearing part comprises a shear-resistant core plate and a connecting plate, the connecting plate is fixedly arranged at one end of the shear-resistant core plate, and the connecting plate is connected with the anchoring connecting piece in a matched manner through the fastener so as to lock the shear-resistant bearing part in the assembling groove. In practice, the anchoring connectors may also be integrated with the frame, thus reducing the number of components and improving the integrity of the system.

Compared with the prior art, the floating track bed provided with the centrally-mounted shear hinges has the following advantages:

(1) the shear-resistant bearing piece is arranged in the middle of the end of the floating slab, so that reliable connection between the shear-resistant bearing piece and an adjacent floating slab can be conveniently realized, the shear force can be smoothly transmitted, the stress of the floating slab body during working can be effectively improved, and the service life of the floating slab can be prolonged;

(2) the shear-resistant bearing piece can be conveniently installed in the assembly groove or taken out of the assembly groove through the abdication opening on the floating plate, so that the maintenance and replacement operation of the shear-resistant bearing piece is very quick and convenient, and the industrial problem that a middle-mounted shear hinge in the traditional technology cannot be replaced is solved;

(3) in the central shear hinge adopted by the invention, the plate-shaped part in the shear-resistant bearing part is used as an effective shear-resistant element to be matched with the assembly groove to transfer shear force between the adjacent floating plates, and compared with a cylindrical shear-resistant core rod adopted by the traditional central shear hinge, the thickness of the plate-shaped part is very small, so that the corresponding assembly groove occupies very small space inside the floating plates, the vertical or transverse arrangement of ribs of the floating plates is basically not influenced, the influence on the plate body strength of the floating plates is very small, and the service life of the floating plates is favorably prolonged.

In conclusion, the floating track bed with the central shear hinges has high construction efficiency, the central shear hinges are convenient to maintain at a later stage, the floating plates in the floating track bed structure are more reasonably stressed, the service life is longer, and the floating track bed can be widely applied to various track traffic modes such as subways, urban railways, overhead light rails and high-speed rails.

Drawings

FIG. 1 is a schematic diagram of a floating track bed with a centrally located shear hinge according to the present invention.

Fig. 2 is a sectional view taken along line a-a of fig. 1.

FIG. 3 is a second schematic view of the floating track bed with a centrally located shear hinge according to the present invention.

FIG. 4 is a third schematic view of the floating track bed with a centrally located shear hinge according to the present invention.

Fig. 5 is a sectional view taken along line D-D of fig. 4.

FIG. 6 is a fourth schematic view of the floating track bed with a centrally located shear hinge according to the present invention.

FIG. 7 is a fifth schematic view of the floating track bed with a centrally located shear hinge according to the present invention.

Detailed Description

Example one

As shown in fig. 1 and fig. 2, the floating track bed provided with a central shear hinge of the invention comprises a floating slab 1 and an elastic vibration isolation device 2, wherein the elastic vibration isolation device 2 is arranged in a built-in structure in the floating track bed, the floating slab 1 is elastically supported by the elastic vibration isolation device 2 and is separated from the surface of a foundation 7, adjacent floating slabs 1 are connected through the central shear hinge, a track structure 8 is arranged on the floating slab 1, the central shear hinge comprises a slab-shaped shear-resistant bearing member 3, an assembly groove 4 correspondingly arranged at the end part of the floating slab 1 and a limiting device arranged on the floating slab 1, the assembly groove 4 is arranged in the middle of the slab end of the floating slab 1 in the plate thickness direction and is communicated with the outside at the end surface B of the floating slab and is opened, the shear-resistant bearing members 3 are respectively embedded in the assembly grooves 4 correspondingly arranged on the adjacent floating slabs 1, the adjacent floating slabs 1 are connected, the shear-resistant bearing member 3 is locked in the assembly groove 4 by the limiting device, the limiting device comprises a limiting hole 6 and a limiting column 5 which are arranged on the plate body of the floating plate 1 corresponding to the assembling groove 4, and the shearing-resistant bearing part 3 is locked in the assembling groove 4 by matching the limiting column 5 with the limiting hole 6; the middle of the end part of the floating plate 1 is provided with a yielding notch 9 for installing a shear-resistant bearing piece, and the assembly groove 4 is communicated with the outside at the side C of the yielding notch 9 and is arranged in an open mode.

During application, the floating plates are heightened and leveled, then the shear-resistant bearing piece 3 is inserted into the assembly groove from the opening of the assembly groove 4 at the side C through the space provided by the yielding notch of the adjacent floating plates, then the limiting column 5 is inserted into the floating plate 1 along the limiting hole 6 from the upper side, and the shear-resistant bearing piece 3 is locked in the assembly groove 4 by matching the limiting column 5 and the limiting hole 6, so that the adjacent floating plates 1 are connected by the shear-resistant bearing piece 3, and during operation, the function of transferring shear force between the adjacent floating plates 1 can be smoothly realized in the process that a rail vehicle passes through.

Compared with the prior art, the floating track bed provided with the centrally-mounted shear hinges has the following advantages:

(1) the shear-resistant bearing piece is arranged in the middle of the end of the floating slab, so that reliable connection between the shear-resistant bearing piece and an adjacent floating slab can be conveniently realized, the shear force can be smoothly transmitted, the stress of the floating slab body during working can be effectively improved, and the service life of the floating slab can be prolonged;

(2) the shear-resistant bearing piece can be conveniently installed in the assembly groove or taken out of the assembly groove through the abdication opening on the floating plate, so that the maintenance and replacement operation of the shear-resistant bearing piece is very quick and convenient, and the industrial problem that a middle-mounted shear hinge in the traditional technology cannot be replaced is solved;

(3) in the central shear hinge adopted by the invention, the plate-shaped part in the shear-resistant bearing part is used as an effective shear-resistant element to be matched with the assembly groove to transfer shear force between the adjacent floating plates, and compared with a cylindrical shear-resistant core rod adopted by the traditional central shear hinge, the thickness of the plate-shaped part is very small, so that the corresponding assembly groove occupies very small space inside the floating plates, the vertical or transverse arrangement of ribs of the floating plates is basically not influenced, the influence on the plate body strength of the floating plates is very small, and the service life of the floating plates is favorably prolonged.

In conclusion, the floating track bed with the central shear hinges has high construction efficiency, the central shear hinges are convenient to maintain at a later stage, the floating plates in the floating track bed structure are more reasonably stressed, the service life is longer, and the floating track bed can be widely applied to various track traffic modes such as subways, urban railways, overhead light rails and high-speed rails.

It should be noted that, based on the technical principle described in fig. 2, as shown in fig. 3, in practical application, a yielding through hole may be further formed in the shear-resistant bearing member 3 corresponding to the limiting device, and the limiting post 5 is inserted into the limiting hole 6 and the yielding through hole to lock the shear-resistant bearing member 3 in the assembly groove 4, so that a good limiting effect is achieved, and the space of the assembly groove 4 can be more effectively utilized; in addition, the limiting hole 6 can also penetrate through the floating plate 1, and the same technical effects can be achieved, and the limiting hole is simple change based on the technical principle of the invention, is not illustrated in any drawing, and is also within the protection scope required by the invention.

Example two

As shown in fig. 4 and 5, the floating track bed provided with the central shear hinges of the present invention is different from the technical solutions shown in fig. 1 and 2 in that the elastic vibration isolation device 2 is arranged in a side-mounted structure in the floating track bed; in addition, two abdicating notches 9 are arranged and are respectively positioned at two sides of the end part of the plate body of the floating plate 1; in addition, the side wall of the assembly groove 4 is provided with a frame 16, and the frame 16 is formed by welding steel plates and is cast with the floating plate 1 into a whole in advance; fourthly, the limiting device comprises an anchor connecting piece 12, the yielding opening 9 on the floating plate 1 corresponds to the assembly groove 4, a detachable limiting stop 11 is arranged on the anchor connecting piece 12 corresponding to the assembly groove 4, and the limiting stop 11 is matched and connected with the anchor connecting piece 12 through a fastener 13 so as to lock the shear-resistant bearing piece 3 in the assembly groove 4.

Compared with the first embodiment, in the technical scheme of the embodiment, because the frame 16 is additionally arranged on the side wall of the assembly groove 4, the accidental damage of the floating plate body structure caused by the mutual direct contact and collision of the assembly groove and the shear-resistant bearing part in the assembly process or the use process can be effectively prevented, the service life of the floating plate can be prolonged, and the frame can be made of stainless steel, engineering plastics and other materials besides the steel plate, and can be selected according to engineering requirements in practical application. In addition, the limiting device adopts the matching connection of the limiting stop 11 and the anchoring connecting piece 12 through the fastener 13 so as to lock the shear-resistant bearing piece 3 in the assembly groove 4, the structure does not need to arrange a limiting hole on the floating plate body, does not damage the floating plate, is simpler and more convenient in operation in the process of processing, manufacturing, installing and maintaining the shear-resistant bearing piece, and is beneficial to improving the operation efficiency; certainly, based on the technical principle, as shown in fig. 6, a detachable limit pin 14 may also be disposed on the anchor connecting member 12 corresponding to the assembly groove 4, specifically, the limit pin 14 is specifically a long bolt, and also can effectively shield an opening of the assembly groove 4 at the side face C, so as to achieve the technical effect of locking the shear-resistant force-bearing member 3 in the assembly groove 4.

EXAMPLE III

As shown in fig. 7, the floating track bed with a central shear hinge of the present invention is different from the technical solutions shown in fig. 4 and 5 in that the anchoring connectors 12 are integrated with the frame 16; in addition, the shear strength member comprises a shear core plate 17 and a connecting plate 15, the connecting plate 15 is fixedly welded at one end of the shear core plate 17, and the connecting plate 15 is matched and connected with the anchor connecting piece 12 through the fastener 13 so as to lock the shear strength member in the assembly groove 4.

Compared with the embodiment, in the technical scheme of the embodiment, the anchoring connecting piece 12 and the frame 16 are integrally arranged, and the shear core plate 17 and the connecting plate 15 are integrally arranged, so that the number of parts related to the system is less, the integrity is better, and the application is more convenient. It should be noted that the size of the through hole in the connecting plate 15 for the fastener 13 is preferably significantly larger than the diameter of the fastener 13, so that the fastener 13 is effectively prevented from bearing shear forces between the floating plates when the connecting plate 15 is assembled with the anchor connector 12. In addition, it should be noted that the anti-shear core plate 17 in the shear-resistant force-bearing member adopts a plate-shaped structure as the shear-resistant member, and the connecting plate 15 exists as the connection auxiliary member, and it does not necessarily need to adopt a plate-shaped structure, and for example, it may also be in a structural form such as a ring-shaped structure, and may also be applied to the present invention, and in practical application, it may be designed and selected according to engineering requirements.

The embodiments of the present invention are only for better illustrating the technical solutions of the present invention, and should not be considered as limiting the present invention, wherein technical features in many embodiments can also be used in a cross-connection, and based on the technical principles of the present invention, a person skilled in the art can recombine the technical solutions described in the above embodiments or simply replace some elements in the same technology, and so on, the technical principles of the present invention are within the protection scope of the present invention.