Post-casting strip pouring support system and post-casting strip pouring construction method

Abstract

The present invention provides a post-casting strip pouring support system and a post-casting strip pouring construction method, which belong to the field of track engineering technology. The post-casting strip pouring support system includes: a limiting side form, a plug plate and a support assembly. Technical effect: before pouring the self-compacting concrete filling layer, a plug plate is set on the post-casting strip to block the previous self-compacting concrete filling layer, and the post-casting strip forms a connecting structure with the lower space of the next track plate. When pouring the post-casting strip, the pouring of the self-compacting concrete filling layer is realized synchronously, and there is no need to wait until the self-compacting concrete filling layer reaches the strength requirement before pouring, which reduces the time difference between the two, improves the construction efficiency, and can form a continuous flow operation; at the same time, the limiting side form and the support assembly are used to realize the position fixing and position adjustment of the plug plate, and the support assembly can avoid the steel bars between adjacent track plates, and has strong operability, avoiding the problem of difficult removal of traditional end molds, and is easy to disassemble and assemble, with a high turnover rate, which reduces the difficulty of construction.

Description

Technical Field

[0001] The invention belongs to the technical field of track engineering, and more specifically, relates to a post-casting strip pouring support system and a post-casting strip pouring construction method. Background Art

[0002] Ballastless track has the characteristics of no ballast splash, good smoothness, good stability, long service life and good durability, and is increasingly used in urban rail transit construction. Usually, ballastless track includes a base, a self-compacting concrete filling layer and a track plate stacked in sequence, and the self-compacting concrete filling layer is set corresponding to the circumferential profile of the track plate. During the construction stage, the gap area formed by adjacent self-compacting concrete filling layers and adjacent track plates is defined as the post-casting zone position.

[0003] During the construction of ballastless track, a base and multiple track plates are first set up, and then a self-compacting concrete filling layer is poured between the base and the track plates. An end mold needs to be set at the post-casting joint for sealing. In conventional processes, single-end sealing is generally adopted. When the strength of the self-compacting concrete filling layer reaches the requirement, the self-compacting concrete at the post-casting joint is poured to make the adjacent track plates and adjacent self-compacting concrete filling layers form a whole.

[0004] In the process of implementing traditional technology, the inventors have found at least the following problems: During the above-mentioned construction process, there is a large time difference in pouring the self-compacting concrete filling layer and the post-casting joint position, the construction efficiency is low, and continuous flow operation cannot be formed. Summary of the invention

[0005] The purpose of the present invention is to provide a post-casting strip pouring support system and a post-casting strip pouring construction method, aiming to solve the technical problems in the traditional construction process, that there is a large time difference when pouring the self-compacting concrete filling layer and the post-casting strip position, the construction efficiency is low, and continuous flow operation cannot be formed.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide a post-casting strip casting support system, including a limiting side mold, an insert plate and a support assembly; wherein the limiting side mold includes: a side mold body, which is provided with an adjustment port; a limiting plate, which is provided with a reserved groove for the insert plate to pass through, and the limiting plate covers the adjustment port so that the reserved groove is located in or avoids the contour range formed by the adjustment port; and a locking member, which is arranged on the side mold body and is used to lock the limiting plate to the side mold body; the support assembly includes: a first support member, which has a first end and a second end; a second support member, which is arranged to rotate crosswise with the first support member and has a third end and a fourth end; a first connecting member, which is arranged on the first end; and a second connecting member, which is arranged on the third end, and the second connecting member cooperates with the first connecting member to make the second end or the fourth end press against the insert plate.

[0007] As another embodiment of the present invention, the side mold body is provided with a fixed rib plate, and a space for accommodating part of the limit plate is formed between the fixed rib plate and the side mold body, and the locking member is passed through the fixed rib plate and pressed against the limit plate.

[0008] As another embodiment of the present invention, the side mold body is provided with a connecting plate arranged perpendicular to the side mold body, and the connecting plate is connected to the fixed rib plate and arranged perpendicularly.

[0009] As another embodiment of the present invention, the inserting plate is provided on a side of the side mold body where the limiting plate is provided, and a handle for pulling the inserting plate out of the reserved groove is provided.

[0010] As another embodiment of the present invention, the plug board includes a board body and a rubber layer wrapped around the surface of the board body.

[0011] As another embodiment of the present invention, the first end is provided with a first support block connected to the first connecting piece, the second end is provided with a second support block, the third end is provided with a third support block connected to the second connecting piece, and the fourth end is provided with a fourth support block.

[0012] As another embodiment of the present invention, the first connecting member is a rod, and the second connecting member is a sleeve that is plugged in and out of the rod.

[0013] As another embodiment of the present invention, the rod has an external thread segment, the sleeve has an internal thread segment matching the external thread segment, the rod and the first support are rotatably arranged, and / or the sleeve and the second support are rotatably arranged.

[0014] As another embodiment of the present invention, the rod has a smooth outer mating surface, the sleeve has a smooth inner mating surface, the rod is rigidly connected to the first support member, and the sleeve is rigidly connected to the second support member.

[0015] The post-cast strip pouring support system provided by the present invention has at least the following technical effects: Compared with the conventional technology, in the post-cast strip pouring support system provided by the present invention, before the ballastless track is poured with the self-compacting concrete filling layer, the support system is set at multiple post-cast strip positions, wherein the plug plate is set close to the previous track plate, which can block the previous self-compacting concrete filling layer during pouring, and the next track plate is not provided with a plug plate, so that the space below the next track plate can form a connecting structure with the post-cast strip, and while pouring the post-cast strip, the self-compacting concrete flows into the space below the next track plate, and the pouring of the next self-compacting concrete filling layer is realized synchronously. After the support system is set up on the entire ballastless track, multiple post-cast strips are directly poured, and multiple self-compacting concrete filling layers are poured synchronously, without having to wait until the self-compacting concrete filling layer reaches the strength requirement before pouring the post-cast strip, which reduces the time difference between the two, improves the construction efficiency, and can form a continuous flow operation. At the same time, the position of the plug plate is fixed and adjusted by using the limiting side formwork and the supporting assembly. The supporting assembly can avoid the steel bars between adjacent track plates, has strong operability, avoids the problem of difficult removal of traditional end formwork, is easy to disassemble and assemble, has a high turnover rate, and reduces the difficulty of construction.

[0016] The present invention also provides a post-cast strip pouring construction method, which uses the post-cast strip pouring support system as described in any of the above embodiments, including the following steps: installing a limiting side form and a plug plate at the post-cast strip position, so that the plug plate extends into the post-cast strip through the reserved groove on the limiting plate and is close to the track plate; installing a support assembly, so that the first support member or the second support member presses the plug plate so that the plug plate is close to the track plate; using a locking member to lock the limiting plate to the side form body so that the position of the plug plate is fixed; pouring self-compacting concrete at the post-cast strip position until it is flush with the end surface of the track plate; removing the support assembly and pulling out the plug plate; adjusting the locking member and the position of the limiting plate relative to the side form body so that the reserved groove avoids the adjustment port; when the strength of the self-compacting concrete reaches the requirement, removing the limiting side form.

[0017] The technical effects of the post-casting strip pouring construction method provided by the present invention and the technical effects of the post-casting strip pouring support system described above will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A schematic diagram of the structure of a post-casting strip pouring support system provided by an embodiment of the present invention;

[0020] Figure 2 It is a schematic structural diagram of a position-limiting side mold in one embodiment of the present invention;

[0021] Figure 3 It is a schematic diagram of another angle structure of the limiting side mold in one embodiment of the present invention;

[0022] Figure 4 It is a structural schematic diagram of a plug board in one embodiment of the present invention;

[0023] Figure 5 It is a structural schematic diagram of a support assembly in one embodiment of the present invention;

[0024] Figure 6 This is the installation diagram of the post-casting belt pouring support system;

[0025] Figure 7 for Figure 6 A partial enlarged schematic diagram of structure A shown;

[0026] Figure 8 for Figure 6 Another partially enlarged schematic diagram of the structure A shown;

[0027] Fig. 9 A schematic flow chart of a post-cast strip pouring construction method provided in one embodiment of the present invention.

[0028] In the figure:

[0029] 10. Post-casting belt casting support system

[0030] 100, limiting side mold 110, side mold body 112, adjustment port

[0031] 114, fixed rib 116, connecting plate 120, limiting plate

[0032] 122, reserved slot 130, locking member 200, plug plate

[0033] 210, handle 220, plate 230, rubber layer

[0034] 300, support assembly 310, first support member 312, first end

[0035] 314, second end 320, second support member 322, third end

[0036] 324, fourth end 330, first adapter 340, second adapter

[0037] 350, first support block 360, second support block 370, third support block

[0038] 380, fourth support block 390, intermediate shaft

[0039] 20, base 30, track plate 40, self-compacting concrete filling layer DETAILED DESCRIPTION

[0040] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0041] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time. The term "and / or" as used herein includes any and all combinations of one or more of the related listed items.

[0042] Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0043] Generally, a ballastless track includes a base, a self-compacting concrete filling layer and a track slab which are stacked in sequence, and the self-compacting concrete filling layer is arranged corresponding to the circumferential profile of the track slab. During the construction stage, the gap area formed by adjacent self-compacting concrete filling layers and adjacent track slabs is defined as the post-casting zone position.

[0044] During the construction of ballastless track, first, a base and multiple track plates are set; then, self-compacting concrete is poured between the base and the track plates to form a self-compacting concrete filling layer; finally, the self-compacting concrete is used to pour the post-casting joint position so that the adjacent track plates and adjacent self-compacting concrete filling layers form a whole.

[0045] When pouring the post-casting strip, the traditional practice is that since the self-compacting concrete filling layer has not yet reached the strength requirements, it is necessary to seal the self-compacting concrete filling layer on one side of the post-casting strip. Generally, an end mold for sealing is set in the post-casting strip. When the self-compacting concrete filling layer reaches the strength requirements, the post-casting strip is poured. However, the post-casting strip is affected by the connecting steel bars, the space is limited, the end mold is difficult to fix, the airtightness and operability are poor, and after the post-casting strip is poured, the end mold is difficult to remove, the construction is difficult, and the time difference before and after is large, and it is impossible to form a continuous flow operation.

[0046] To this end, please also refer to Figures 1 to 9 Now, the post-casting strip pouring support system 10 and the post-casting strip pouring construction method provided in the embodiment of the present invention are described.

[0047] See also Figures 1 to 5 The embodiment of the present invention provides a post-casting strip casting support system 10, including a limiting side mold 100, a plug plate 200 and a support assembly 300. The limiting side mold 100 includes: a side mold body 110, which is provided with an adjustment port 112; a limiting plate 120, which is provided with a reserved groove 122 for the plug plate 200 to pass through, and the limiting plate 120 covers the adjustment port 112, so that the reserved groove 122 is located in or avoids the contour range formed by the adjustment port 112; and a locking member 130, which is provided on the side mold body 110 and is used to lock the limiting plate 120 to the side mold body 110. The support assembly 300 includes: a first support member 310, having a first end 312 and a second end 314; a second support member 320, which is arranged to rotate crosswise with the first support member 310 and has a third end 322 and a fourth end 324; a first connecting member 330, which is arranged at the first end 312; and a second connecting member 340, which is arranged at the third end 322. The second connecting member 340 cooperates with the first connecting member 330 to make the second end 314 or the fourth end 324 press against the plug board 200.

[0048] It should be noted that the reference Figures 6 to 8 , usually, multiple self-compacting concrete filling layers 40 and post-casting strips B at corresponding positions are cast between the base 20 and multiple track plates 30. It can be understood that the space below the track plate 30 is used to cast the self-compacting concrete filling layer 40. Before casting the post-casting strips B and the self-compacting concrete filling layer 40, a post-casting strip support system 10 is set at multiple post-casting strips B. At each post-casting strip B, a plug plate 200 is set close to the previous track plate 30 to block the previous self-compacting concrete filling layer 40 during the casting process. The plug plate 200 is not set at the next track plate 30, so that the space below the next track plate 30 can form a connecting structure with the post-casting strip B, so that when the post-casting strip B is cast, the self-compacting concrete flows into the space below the next track plate 30 to obtain the self-compacting concrete filling layer 40. Figure 6 The figure only illustrates the installation method of a post-cast strip casting support system 10, and in order to clarify the space below the track plate 30, it is illustrated as a solid layer after casting, that is, the self-compacting concrete filling layer 40. It can be understood that before the self-compacting concrete filling layer 40 and the post-cast strip B are cast, the space below the track plate 30 is a virtual body.

[0049] refer to Figures 6 to 8 , it is defined that the arrangement direction of the multiple track plates 30 is the longitudinal direction, and the covering width direction of the track plates 30 is the transverse direction. Accordingly, in this article, the longitudinal direction of the post-cast strip B, the transverse direction of the post-cast strip B, and other "longitudinal" and "transverse" that appear are all used as references, and no further explanation will be given below.

[0050] Specifically, the limiting side mold 100 is arranged on the outside of the post-casting strip B, and is pressed against the side of the track plate 30 through a clamping device, an inclined support device, etc., and is used to block the post-casting strip B. Figures 6 to 8 As shown, the covering height of the limiting side form 100 is set to be higher than the superposition height of the self-compacting concrete filling layer 40 and the track plate 30 to avoid overflow of the self-compacting concrete when pouring the post-casting strip B. The side form body 110 is pressed against the side of the track plate 30, and an adjustment port 112 is provided on the side form body 110, so that the position of the limiting plate 120 can be adjusted adaptively. When the reserved groove 122 is within the contour range formed by the adjustment port 112, the plug plate 200 can be inserted into the reserved groove 122 and extend into the post-casting strip B through the adjustment port 112; when the plug plate 200 is taken out, the position of the limiting plate 120 is adjusted so that the reserved groove 122 avoids the contour range formed by the adjustment port 112, so that the side form body 110 and the limiting plate 120 are in a tightly blocked state. In the above adjustment process, the locking member 130 is used to achieve the loosening or locking effect, and bolts, screws, etc. can be used specifically.

[0051] The insert plate 200 is used to block the self-compacting concrete filling layer 40 on one side of the post-casting strip B. Generally, the covering height of the insert plate 200 is greater than the height of the self-compacting concrete filling layer 40 to prevent the self-compacting concrete filling layer 40 from overflowing into the post-casting strip B. Before pouring the post-casting strip B, the insert plate 200 is inserted into the post-casting strip B. After the pouring is completed, the insert plate 200 is pulled out of the post-casting strip B. This arrangement shortens the time difference between pouring the self-compacting concrete filling layer 40 and the post-casting strip B, improves the construction efficiency, and is conducive to forming a continuous flow operation.

[0052] The support assembly 300 is used to support and press the plug plate 200, avoid the displacement of the plug plate 200 in the post-cast strip B, and form a fixed constraint on the plug plate 200. Since the support assembly 300 includes a first support member 310 and a second support member 320 arranged crosswise, it occupies a small space and can be interspersed in the post-cast strip B to avoid connecting steel bars, and has strong operability, which is convenient for forming a fixed constraint on the plug plate 200. The first support member 310 and the second support member 320 are arranged to rotate crosswise through the intermediate shaft 390. When the first fitting member 330 and the second fitting member 340 are matched, the force formed by the first fitting member 330 and the second fitting member 340 causes one of the first support member 310 and the second support member 320 to press the plug plate 200, and the other to press the track plate 30. Specifically, the second end 314 of the first support member 310 and the fourth end 324 of the second support member 320 realize the pressing function. The second end 314 and the fourth end 324 are higher than the self-compacting concrete filling layer 40, so that the first support member 310 or the second support member 320 can press against the track plate 30 on the side where the plug plate 200 is not set. When the matching relationship between the first adapter 330 and the second adapter 340 is destroyed, the fixing constraint on the plug plate 200 is released, and the first support member 310 and the second support member 320 can be taken out. According to the length of the plug plate 200, the number of support assemblies 300 can be adaptively adjusted, for example, Figures 6 to 8 As shown, two support assemblies 300 are provided. It can be understood that the first fitting member 330 and the second fitting member 340 are higher than the end surface of the track plate 30 to facilitate adjustment and removal of the support assembly 300.

[0053] In actual use, the limiting side formwork 100 and the plug plate 200 are installed first, and then the support assembly 300 is installed, and then pouring is performed. After pouring is completed, the support assembly 300 and the plug plate 200 are removed, and the position of the limiting plate 120 is adjusted to laterally block the post-casting strip B. When the self-compacting concrete in the post-casting strip B reaches the strength requirement, the limiting side formwork 100 is removed. The space occupied by the support assembly 300 and the plug plate 200 is filled with self-compacting concrete that does not meet the strength requirement. The post-casting strip casting support system 10 can be reused and is easy to disassemble and assemble.

[0054] The post-cast strip casting support system 10 provided by the embodiment of the present invention has at least the following technical effects: compared with the conventional technology, in the post-cast strip casting support system 10 provided by the embodiment of the present invention, before the self-compacting concrete filling layer 40 is cast in the ballastless track, the support system is arranged at multiple post-cast strips B positions, wherein the insert plate 200 is arranged close to the previous track plate 30, and can seal the previous self-compacting concrete filling layer 40 during casting, and the subsequent track plate 30 is not provided with the insert plate 200, so that the space below the subsequent track plate 30 can form a connecting structure with the post-cast strip B, and while the post-cast strip B is being cast, the self-compacting concrete flows into the space below the subsequent track plate 30, and the casting of the subsequent self-compacting concrete filling layer 40 is simultaneously realized. After the support system is set up on the entire ballastless track, multiple post-casting strips B are directly cast, and multiple self-compacting concrete filling layers 40 are cast simultaneously. It is not necessary to wait until the self-compacting concrete filling layer 40 reaches the strength requirement before casting the post-casting strips B, which reduces the time difference between the two, improves the construction efficiency, and can form a continuous flow operation. At the same time, the position of the plug plate 200 is fixed and adjusted by using the limited side mold 100 and the support assembly 300. The support assembly 300 can avoid the steel bars between adjacent track plates 30, has strong operability, avoids the problem of difficulty in removing the traditional end mold, is easy to disassemble and assemble, has a high turnover rate, and reduces the difficulty of construction.

[0055] See also Figures 1 to 3 As a specific implementation of the embodiment of the present invention, the side mold body 110 is provided with a fixed rib plate 114, and a space for accommodating part of the limiting plate 120 is formed between the fixed rib plate 114 and the side mold body 110, and the locking member 130 is passed through the fixed rib plate 114 and pressed against the limiting plate 120. The fixed rib plate 114 is used to install the locking member 130 and to limit the lateral displacement of the limiting plate 120, so that the limiting plate 120 can move longitudinally in the space formed by the fixed rib plate 114 and the side mold body 110 to adjust the corresponding relationship between the reserved groove 122 and the adjustment port 112. The locking member 130 is passed through the fixed rib plate 114, and by pressing the limiting plate 120, the limiting plate 120 presses against the side mold body 110, thereby fixing the position of the plug plate 200, and making the side mold body 110 and the limiting plate 120 jointly block the post-casting strip B.

[0056] Furthermore, the side mold body 110 is provided with a connecting plate 116 arranged perpendicularly to the side mold body 110, and the connecting plate 116 is connected to the fixed rib plate 114 and arranged perpendicularly. The fixed rib plate 114 is connected to the side mold body 110 through the connecting plate 116, and the connecting plate 116 is used as an intermediate adapter plate. In order to clamp the limiting plate 120 and form a space for accommodating part of the limiting plate 120, the connecting plate 116 is arranged perpendicularly to the side mold body 110, and the fixed rib plate 114 is arranged perpendicularly to the connecting plate 116, forming a space matching the shape of the limiting plate 120, which plays a better limiting role.

[0057] See also Figure 4 As a specific implementation of the embodiment of the present invention, the plug plate 200 is provided with a handle 210 on the side where the limit plate 120 is provided on the side form body 110, which is used to pull the plug plate 200 out of the reserved groove 122. In order to speed up the construction speed and facilitate manual operation, in this embodiment, the plug plate 200 is provided with a handle 210 on the side where the limit plate 120 is provided on the side form body 110, that is, the plug plate 200 is provided with a handle 210 on the side that does not extend into the post-casting strip B, so as to facilitate the pulling action.

[0058] See also Figure 4 As a specific implementation of an embodiment of the present invention, the plug board 200 includes a board body 220 and a rubber layer 230 wrapped on the surface of the board body 220. In this embodiment, the board body 220 can be made of a steel plate to increase its own structural strength. The rubber layer 230 is wrapped outside the board body 220. The rubber layer 230 can ensure the airtightness of the plugging, which is conducive to pulling the plug board 200 out of the post-casting zone B after the pouring is completed. In addition, the rubber layer 230 is detachably wrapped on the surface of the board body 220. When it is severely damaged, it can be directly removed and replaced with a new rubber layer 230 to increase the service life of the board body 220.

[0059] See also Figure 1 and Figure 5 As a specific implementation of the embodiment of the present invention, the first end 312 is provided with a first support block 350 connected to the first fitting 330, the second end 314 is provided with a second support block 360, the third end 322 is provided with a third support block 370 connected to the second fitting 340, and the fourth end 324 is provided with a fourth support block 380. The first support block 350 can be formed integrally with the first support member 310 or separately. The first support block 350 can increase the contact area between the first support member 310 and the first fitting 330, as an intermediate transition structure. The second support block 360 can be formed integrally with the first support member 310 or separately, and is used to press the plug board 200 or the track plate 30. The third support block 370 can be formed integrally with the second support member 320 or separately. The third support block 370 can increase the contact area between the second support member 320 and the second fitting 340, as an intermediate transition structure. The fourth support block 380 can be formed integrally with the second support member 320 or can be formed separately, and is used to press the plug board 200 or the track plate 30. The first support block 350, the second support block 360, the third support block 370 and the fourth support block 380 are in the form of a rectangular parallelepiped structure, and the second support block 360 and the fourth support block 380 have smooth pressing surfaces.

[0060] See also Figure 1 and Figure 5As a specific implementation of the embodiment of the present invention, the first connector 330 is a rod, and the second connector 340 is a sleeve that is plugged in and out of the rod. In order to speed up the construction and simplify the complexity of the construction, in this embodiment, the first connector 330 and the second connector 340 are set to a structural form that can be loosened or constrained by plugging in and out. Specifically, the first connector 330 is a rod, and the second connector 340 is a sleeve. It can be understood that the first connector 330 and the second connector 340 can be interchangeable. The rod is specifically connected to the first support block 350, and the sleeve is specifically connected to the third support block 370.

[0061] Further, the rod has an external thread section, the sleeve has an internal thread section matched with the external thread section, the rod is rotatably arranged with the first support member 310, and / or the sleeve is rotatably arranged with the second support member 320. In this embodiment, the rod and the sleeve can be threadedly matched to achieve different depths of insertion of the rod into the sleeve, thereby achieving applicability of different sizes of post-casting strips B. At the same time, the threaded matching method also achieves the plug-in and pull-out effect of the rod and the sleeve, which is convenient for installing and removing the support assembly 300.

[0062] Since the condition of thread matching is rotational motion, the rod and / or sleeve are correspondingly connected to the first support member 310 and the second support member 320 by rotation. For example, a circumferential groove can be provided on the outer surface of the rod and / or sleeve, and a circumferential protrusion is provided at the corresponding position of the first support member 310 and / or the second support member 320, specifically, the first support block 350 and / or the third support block 370 are correspondingly provided, and the rod and / or sleeve are respectively embedded in the first support member 310 and / or the second support member 320 through the matching relationship between the circumferential groove and the circumferential protrusion, and the circumferential groove and the circumferential protrusion form axial and radial limits, but can rotate relative to each other, thereby realizing the rotation of the rod and / or sleeve. For another example, the rotation relationship between the rod and the first support member 310, and the rotation relationship between the sleeve and the second support member 320 can adopt a principle similar to that of a bearing, that is, they correspond to the inner ring and the outer ring of the bearing respectively. Of course, the rod and the sleeve can also realize their own rotation in other ways.

[0063] Alternatively, the rod has a smooth outer mating surface, the sleeve has a smooth inner mating surface, the rod is rigidly connected to the first support member 310, and the sleeve is rigidly connected to the second support member 320. In this embodiment, the rod and the sleeve are directly plugged in and out, and the rod is inserted into the sleeve to achieve the fixed constraint on the plugboard 200; the rod is pulled out of the sleeve to release the fixed constraint on the plugboard 200. The rod and the sleeve are non-rotatably connected relative to the first support member 310 and the second support member 320, respectively, and the connection reliability of the rod and the sleeve is improved by the rigid connection method.

[0064] Furthermore, the outer surface of the rod and / or the sleeve is provided with anti-skid patterns. Specifically, the rod is provided with anti-skid patterns at the position where the internal thread section or the outer mating surface is not provided, and / or the outer surface of the sleeve is provided with anti-skid patterns, which can increase the friction between the manipulator or the human hand and the rod and the sleeve when adjusting the relationship between the rod and the sleeve, prevent slipping, and reduce the adjustment time of the rod and the sleeve.

[0065] See also Fig. 9 The embodiment of the present invention also provides a post-casting strip pouring construction method, using the post-casting strip pouring support system 10 as described in any of the above embodiments, and refer to Figures 6 to 8 , including the following steps:

[0066] S100. Install the limiting side formwork and the insert plate at the position of the post-casting strip, so that the insert plate extends into the post-casting strip through the reserved groove on the limiting plate and is close to the track plate.

[0067] Specifically, the limiting side form 100 is pressed against the outside of the post-casting strip B by using an external clamping device, an oblique support device, etc., so that it can be horizontally blocked when pouring the post-casting strip B. The covering height of the limiting side form 100 is set to be higher than the superposition height of the self-compacting concrete filling layer 40 and the track plate 30 to avoid overflow of the self-compacting concrete when pouring the post-casting strip B. The position of the limiting plate 120 relative to the side form body 110 in the longitudinal direction is adjusted so that the reserved groove 122 is as close to the track plate 30 as possible, and then the plug plate 200 is closer to the track plate 30 after being inserted into the reserved groove 122. The length of the plug plate 200 is greater than the lateral dimension of the self-compacting concrete filling layer 40, and the width of the plug plate 200 is greater than the height of the self-compacting concrete filling layer 40, so that the plug plate 200 can tightly block the self-compacting concrete filling layer 40 that does not meet the strength requirements.

[0068] S200, installing the support assembly so that the first support member or the second support member presses the plug plate so that the plug plate is closely attached to the track plate.

[0069] Specifically, in this embodiment, the second support member 320 pressing the plug plate 200 is taken as an example for explanation. The first support member 310 and the second support member 320 can avoid the connecting steel bars in the post-cast strip B. Along the length direction of the plug plate 200, that is, the transverse direction of the post-cast strip B, one or multiple support assemblies 300 are arranged in sequence and at intervals. By adjusting the matching relationship between the first adapter 330 and the second adapter 340, the first support member 310 and the second support member 320 are subjected to the reaction force, the first support member 310 is pressed against the track plate 30 without the plug plate 200, and the second support member 320 is pressed against the plug plate 200, and the plug plate 200 is made close to the track plate 30. At this time, the second end 314 of the first support member 310 and the fourth end 324 of the second support member 320 specifically realize the pressing effect. In order to increase the pressing contact area, a second support block 360 is also provided at the second end 314, and a fourth support block 380 is also provided at the fourth end 324.

[0070] In this embodiment, the first fitting 330 may be a rod with a smooth outer surface, and the second fitting 340 may be a sleeve with a smooth inner surface. The rod and the sleeve are directly plugged in and out, and the rod and the sleeve are respectively rigidly connected to the first support member 310 and the second support member 320. Alternatively, the first fitting 330 may be a rod with an external thread section, and the stacked fitting may be a sleeve with an internal thread section. The rod and the sleeve are plugged in and out by means of threaded matching, and the rod and / or the sleeve are respectively rotatably connected to the first support member 310 and the second support member 320.

[0071] S300, use a locking member to lock the limit plate to the side mold body so that the position of the plug plate is fixed.

[0072] Specifically, after the support assembly 300 presses the inserting plate 200 against the track plate 30, one or more locking members 130 are used to lock the limiting plate 120 to the side mold body 110, so that the position of the inserting plate 200 remains fixed. The locking member 130 can be a flat head bolt, which is installed on the fixed rib plate 114. By tightening or loosening the flat head bolt, the end of the flat head bolt can press the limiting plate 120 against the side mold body 110, or release the clamping restriction on the limiting plate 120.

[0073] S400. Pour self-compacting concrete at the post-casting joint until it is flush with the end surface of the track slab.

[0074] Specifically, the barrel opening in the pouring system is opened to allow the self-compacting concrete to flow into the post-casting zone B along the material channel and into the space below the next track plate 30, and the self-compacting concrete filling layer 40 is poured simultaneously. When the self-compacting concrete is filled to be flush with the end surface of the track plate 30, the barrel opening is closed. Figure 6As shown, it can be understood that the adjacent self-compacting concrete filling layer 40 and the adjacent track plate 30 generally form two post-casting strips B arranged in the transverse direction, and during pouring, the pouring can be performed simultaneously to reduce the construction time. In addition, it can be understood that the first adapter 330 and the second adapter 340 are higher than the end surface of the track plate 30 to facilitate the adjustment and removal of the support assembly 300.

[0075] S500. Remove the support assembly and pull out the plug board.

[0076] Specifically, after closing the barrel opening, the matching relationship between the first fitting 330 and the second fitting 340 is adjusted so that the first support member 310 or the second support member 320 releases the constraint on the plug board 200, and the support assembly 300 is taken out from the post-casting strip B. The plug board 200 that is free from the constraint of the support assembly 300 is pulled out from the post-casting strip B. Since the self-compacting concrete just poured at this time does not meet the strength requirements, the space occupied by the support assembly 300 and the plug board 200 in the post-casting strip B will be filled with the self-compacting concrete, and no defects such as holes and bubbles will be generated.

[0077] S600, adjust the locking piece, and adjust the position of the limit plate relative to the side mold body so that the reserved groove avoids the adjustment opening.

[0078] Specifically, first loosen the locking piece 130 to release the constraint on the limit plate 120; then adjust the longitudinal position of the limit plate 120 relative to the side form body 110 so that the side form body 110 blocks the reserved groove 122, thereby blocking the self-compacting concrete that does not meet the strength requirement and preventing the self-compacting concrete from flowing out of the reserved groove 122; finally, tighten the locking piece 130 to fix the position of the limit plate 120.

[0079] S700. When the strength of the self-compacting concrete reaches the requirement, remove the limiting side formwork.

[0080] Specifically, after standing for a period of time, the strength of the self-compacting concrete at the post-casting strip B reaches the requirement, and it has been tightly connected with the self-compacting concrete filling layer 40 and the track plate 30 to form a whole. At this time, the limiting side formwork 100 can be removed. If the entire ballastless track is segmented, the disassembled multiple post-casting strip casting support systems 10 are installed at the next station, and the above steps are repeated to complete the casting construction of the post-casting strip B of the entire ballastless track. If the entire ballastless track is continuous, the post-casting strip casting support systems 10 are set at all post-casting strips B before casting, and the synchronous casting of all post-casting strips B and the self-compacting concrete filling layer 40 is completed.

[0081] The post-cast strip pouring construction method provided by the embodiment of the present invention has at least the following technical effects: compared with the conventional technology, the post-cast strip pouring construction method provided by the embodiment of the present invention adopts the above-mentioned post-cast strip pouring support system 10, and before the self-compacting concrete filling layer 40 is poured on the ballastless track, the support system is arranged at multiple post-cast strips B positions, wherein the insert plate 200 is arranged close to the previous track plate 30, and can seal the previous self-compacting concrete filling layer 40 during pouring, and the subsequent track plate 30 is not provided with the insert plate 200, so that the space below the subsequent track plate 30 can form a connecting structure with the post-cast strip B, and while pouring the post-cast strip B, the self-compacting concrete flows into the space below the subsequent track plate 30, and the pouring of the subsequent self-compacting concrete filling layer 40 is realized simultaneously. After the support system is set up on the entire ballastless track, multiple post-casting strips B are directly cast, and multiple self-compacting concrete filling layers 40 are cast simultaneously. It is not necessary to wait until the self-compacting concrete filling layer 40 reaches the strength requirement before casting the post-casting strips B, which reduces the time difference between the two, improves the construction efficiency, and can form a continuous flow operation. At the same time, the position of the plug plate 200 is fixed and adjusted by using the limited side mold 100 and the support assembly 300. The support assembly 300 can avoid the steel bars between adjacent track plates 30, has strong operability, avoids the problem of difficulty in removing the traditional end mold, is easy to disassemble and assemble, has a high turnover rate, and reduces the difficulty of construction.

[0082] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Post-casting belt casting support system, characterized in that: It includes a limiting side mold, a plug plate and a supporting assembly; wherein the limiting side mold includes: The side mold body is provided with an adjustment opening; A limit plate is provided with a reserved slot for the plug plate to pass through, and the limit plate covers the adjustment opening so that the reserved slot is located in or avoids the contour range formed by the adjustment opening; and A locking member, provided on the side mold body, used to lock the limit plate to the side mold body; The support assembly comprises: a first support member having a first end and a second end; A second support member is arranged to rotate crosswise with the first support member and has a third end and a fourth end; A first matching member, disposed at the first end; and A second matching piece, disposed at the third end, the second matching piece cooperates with the first matching piece to make the second end or the fourth end press against the plug board; The side mold body is provided with a fixed rib plate, a space for accommodating part of the limit plate is formed between the fixed rib plate and the side mold body, and the locking member is passed through the fixed rib plate and pressed against the limit plate; The side mold body is provided with a connecting plate arranged perpendicular to the side mold body, and the fixed rib is connected to the side mold body through the connecting plate; The inserting plate is provided on one side of the side mold body where the limiting plate is arranged, and is provided with a handle for pulling the inserting plate out of the reserved groove.

2. The post-casting strip pouring support system according to claim 1, characterized in that: The connecting plate is connected to the fixing rib plate and is vertically arranged.

3. The post-casting strip pouring support system according to claim 1, characterized in that: The inserting plate comprises a plate body and a rubber layer wrapped on the surface of the plate body.

4. The post-casting strip pouring support system according to claim 1, characterized in that: The first end is provided with a first support block connected to the first fitting, the second end is provided with a second support block, the third end is provided with a third support block connected to the second fitting, and the fourth end is provided with a fourth support block.

5. The post-casting strip pouring support system according to claim 1 or 4, characterized in that: The first connecting piece is a rod, and the second connecting piece is a sleeve that is plugged in and out of the rod.

6. The post-casting strip pouring support system according to claim 5, characterized in that: The rod has an external thread section, the sleeve has an internal thread section matching the external thread section, the rod is rotatably arranged with the first support member, and / or the sleeve is rotatably arranged with the second support member.

7. The post-casting strip pouring support system according to claim 5, characterized in that: The rod has a smooth outer mating surface, the sleeve has a smooth inner mating surface, the rod is rigidly connected to the first support member, and the sleeve is rigidly connected to the second support member.

8. A post-casting strip pouring construction method, using the post-casting strip pouring support system according to any one of claims 1 to 7, characterized in that: The following steps are involved: Install the limiting side formwork and the insert plate at the post-casting strip position, so that the insert plate extends into the post-casting strip through the reserved groove on the limiting plate and is close to the track plate; Install the support assembly so that the first support member or the second support member presses the plug plate tightly so that the plug plate is close to the track plate; Use a locking piece to lock the limit plate to the side mold body so that the position of the plug plate is fixed; Pour self-compacting concrete at the post-casting zone until it is flush with the end surface of the track slab; Remove the support assembly and pull out the plug board; Adjust the locking piece and the position of the limit plate relative to the side mold body so that the reserved groove avoids the adjustment opening; When the strength of the self-compacting concrete reaches the requirement, the limiting side formwork is removed.

Images