A prefabricated municipal pipeline corridor

Abstract

The present application relates to a prefabricated municipal pipe gallery, comprising a plurality of prefabricated segments that are sequentially spliced ​​together, an anchor for anchoring two adjacent prefabricated segments, and a sealing assembly; the anchor is disposed at the splicing portion between the two adjacent prefabricated segments; the sealing assembly comprises a sealing ring plate and a clamping ring plate made of elastic material, the sealing ring plate comprising a fixed portion, a deforming portion, and a clamping portion distributed along a central axis; the fixed portion is prefabricated at one end of the prefabricated segment; the deforming portion is used to seal the gap between adjacent prefabricated segments and is clamped between the two adjacent prefabricated segments; the clamping ring plate is prefabricated at the end face of the prefabricated segment where the prefabricated segments where the fixed portion is located are spliced ​​together, and the clamping ring plate is formed with a clamping ring groove that opens toward the adjacent prefabricated segment; the clamping portion is integrally inserted into the clamping ring groove; and the prefabricated segments are provided with a control member for causing the clamping ring plate to clamp the clamping portion. The present application can effectively reduce the impact of geological subsidence on the sealing stability of prefabricated municipal pipe galleries.

Description

Technical Field

[0001] The present application relates to the field of pipe corridors, and in particular to a prefabricated municipal pipe corridor. Background Art

[0002] An urban integrated utility corridor is a tunnel built beneath a city, integrating various engineering pipelines such as power, communications, heating, and water supply. Existing technologies often use cast-in-place construction methods to build utility corridors. However, due to their location within cities, this method requires significant surface space, such as on streets. Therefore, to reduce the space required for construction, prefabricated utility corridors are currently being encouraged.

[0003] Since the length of the pipe gallery is relatively long and the prefabricated pipe gallery is made of prefabricated pipe gallery segments spliced ​​together, the gap between two adjacent pipe gallery segments needs to be waterproofed. A socket and a splice are provided at each end of the pipe gallery segment for splicing together, and two rings of sealing rings are set between the spliced ​​sockets and splices. After compression, they form a radial working surface seal and an axial end face seal along the pipe gallery segment. At the same time, two connecting joints are provided in the pipe gallery segment, and the connecting joints are connected between the two sealing rings. This allows the sealing to be tested during construction, and if the sealing ring loses its sealing effect due to long-term use or settlement, a secondary seal can be formed by pouring sealant through the connecting joint.

[0004] In actual use, in the above-mentioned prior art, when geological settlement changes occur, the two adjacent tunnel sections will undergo relative displacement, resulting in changes in the pressure on the sealing rings at different positions. For example: when the amount of settlement of two adjacent tunnel sections away from one end is greater than that of the splicing part, the two adjacent tunnel sections away from one end will drop relative to the splicing part, which will cause the gap between the sealing ring at the top of the tunnel section to expand, resulting in a decrease in the pressure on the sealing ring here, and even when the gap changes greatly, it will cause the sealing ring to separate from the end face of the tunnel section. Therefore, settlement will cause the pressure at the local position of the sealing ring to decrease or even separate from the tunnel section, resulting in the failure of the sealing effect. Although it can be repaired by injecting sealant later, in water-rich areas, such as areas with abundant groundwater or riverside areas, a large amount of groundwater will seep into the tunnel between the time of settlement and the time of repair, which will pose a great threat to the electrical pipelines in the tunnel. Therefore, how to reduce the impact of geological settlement on the sealing stability of prefabricated tunnels is a problem that urgently needs to be solved. Summary of the Invention

[0005] In order to reduce the impact of geological subsidence on the sealing stability of prefabricated pipe corridors, the present application provides a prefabricated municipal pipe corridor.

[0006] This application provides a prefabricated municipal pipe corridor, which adopts the following technical solutions:

[0007] A prefabricated municipal pipe gallery comprises a plurality of prefabricated segments spliced ​​one after another, an anchor for anchoring two adjacent prefabricated segments, and a sealing assembly; the anchor is arranged at the splicing portion of two adjacent prefabricated segments; the sealing assembly comprises a sealing ring plate and a clamping ring plate made of elastic material, the sealing ring plate comprises a fixing portion, a deformation portion, and a clamping portion distributed along the central axis direction, the fixing portion is preset at one end of the prefabricated segment, the deformation portion is used to seal the gap between adjacent prefabricated segments and is clamped between two adjacent prefabricated segments, the clamping ring plate is preset at the end face of the prefabricated segment spliced ​​with the prefabricated segments where the fixing portion is located, and the clamping ring plate is formed with a clamping ring groove opening toward the adjacent prefabricated segments, the clamping portion is inserted as a whole into the clamping ring groove, and the prefabricated segment is provided with a control component for enabling the clamping ring plate to clamp the clamping portion.

[0008] By adopting the above technical solution, when in use, several prefabricated segments are spliced ​​together and anchored by anchors to form the main structure of the pipe gallery, and in the splicing process, since the fixing portion is preset in one of the prefabricated segments that are spliced ​​together, and the clamping portion is inserted into the clamping ring groove through the relatively sliding prefabricated segments, and the deformed portion is clamped in the gap between the two prefabricated segments that are spliced ​​together to serve as a seal; at the same time, the clamping portion is clamped by the control member, so that when geological settlement occurs, the sealing ring plate is stably connected to the two adjacent prefabricated segments through the clamping portion clamped by the clamping ring plate and the fixing portion preset in the prefabricated segment, and in this During the process, the deformation part adapts to the relative displacement of the two adjacent prefabricated segments caused by settlement, thereby adapting to the displacement caused by settlement, and at the same time, the sealing ring plate can be stably connected, effectively reducing the influence of settlement on the sealing stability. Compared with the sealing ring clamped in the splicing part of the prefabricated segment, the possibility of the sealing ring and the prefabricated segment being separated due to the relative displacement of the two adjacent prefabricated segments can be effectively reduced; in addition, since the sealing ring plate is expected to be pre-placed in the prefabricated segment, compared with clamping the sealing ring during the movement of the two prefabricated segments toward each other on site, the purpose of optimizing construction convenience can also be achieved.

[0009] Optionally, a supporting ring plate for supporting the clamping portion is embedded inside the clamping portion.

[0010] By adopting the above technical solution, since the sealing ring plate is pre-placed in the prefabricated segment, and the prefabricated segment is generally horizontal or has a certain inclination angle during the splicing process, the supporting ring plate can support the clamping part to reduce the deformation of the clamping part while facilitating the adjustment of the overall position of the clamping part, so that the clamping part can be stably clamped in the clamping ring groove.

[0011] Optionally, the deformation portion is an annular tubular structure, a support ring tube is provided inside the deformation portion for supporting the deformation portion, the support ring tube is an annular tubular structure, and the support ring plate and the support ring tube are arranged to slide relative to each other.

[0012] By adopting the above technical solution, the deformation part is an annular tubular structure, which can adapt to the displacement of adjacent prefabricated segments through elastic bending of the deformation part, and at the same time, the deformation part can also be supported by the support ring tube, so as to reduce the possibility that the deformation part is deformed due to gravity during the splicing process of the prefabricated segments, resulting in the clamping part being unable to stably clamp into the clamping ring groove; at the same time, the support ring plate and the support ring tube are arranged to slide relative to each other, and the prefabricated segments will also compress the support ring tube during the pre-tightening process before being connected by the anchor, causing the support ring tube to deform, so that the deformation part still has a deformation margin after the prefabricated segments are pre-tightened; in addition, when the clamping part deviates from the clamping ring groove, there is a certain adjustment margin.

[0013] Optionally, the deformation part is filled with sealant, and a sealing ring groove is formed on the edge of the clamping part away from the connected deformation part. The clamping part and the support ring plate are penetrated by a connecting tube for leading out the sealant, and the connecting tube is connected to the sealing ring groove. The connecting tube is provided with a sealing part for controlling the opening and closing of the connecting tube during the splicing of the prefabricated segments.

[0014] By adopting the above technical solution, during the pre-tightening process of the prefabricated segments, since both the deformation part and the support ring tube will be deformed, the sealing member enables the connecting tube to pass through the sealant with a certain pressure, thereby squeezing the internal sealant through the connecting tube into the sealing ring groove, so that the sealant can relatively fully bond the clamping part to the inner wall of the clamping ring groove, and also serve as a seal to reduce the possibility of separation between the clamping ring plate and the clamping part, and also optimize the sealing effect; in addition, before the prefabricated segments are spliced, the sealant is filled in the deformation part and the support ring tube, which can also assist in supporting the deformation part and the support ring tube, reducing the possibility of deformation of the support ring tube, so as to further reduce the possibility of the clamping part and the clamping ring groove being unable to be aligned due to deformation of the deformation part.

[0015] Optionally, the sealing part includes a sealing rod and several sealing elastic plates, the sealing rod is coaxially threadedly connected to the connecting pipe before the prefabricated segments are spliced, several of the sealing elastic plates are located on the side of the sealing rod facing the supporting ring pipe, several of the sealing elastic plates are spliced ​​with each other and the projections along the axial direction of the connecting pipe are adapted to the connecting pipe, the outer ring edge of the sealing elastic plate is fixedly connected to the inner wall of the connecting pipe, and the sealing rod abuts against the several sealing elastic plates before the prefabricated segments are spliced.

[0016] By adopting the above technical solution, the sealing rod abuts against the sealing elastic plate, which can limit the extrusion of the sealant, so as to reduce the overflow of the sealant before the prefabricated segments are spliced; at the same time, during the splicing process, the sealing rod is pulled out relative to the sealing tube. At this time, the sealing elastic plate will still seal the connecting tube, and during the pre-tightening process of the prefabricated segments, the sealant will have a relatively large pressure, so that the sealant can squeeze the sealing elastic plate and cause the sealing elastic plate to deform. At this time, the sealant can overflow into the sealing ring groove through the connecting tube.

[0017] Optionally, a plurality of retreat openings distributed along the circumferential direction of the support ring tube are formed on one side of the support ring tube facing the clamping portion, an abutment bar is formed between two adjacent retreat openings, and the support ring plate abuts against the abutment bar.

[0018] By adopting the above technical solution, during the pre-tightening process, the support ring plate is clamped so that the support ring plate will abut against the abutment strip. At this time, due to the existence of the retreat opening, the abutment strip will be more likely to deform than other parts of the support ring tube, and when the pre-tightening displacement is relatively large, the abutment strip will break relative to the support ring tube. At this time, due to the residual sealant in the support ring tube, the abutment strip can also be bonded to the inner wall of the support ring tube to reduce the possibility of the abutment strip damaging the deformed part.

[0019] Optionally, both ends of the abutment strip along the length direction are respectively provided with grooves.

[0020] By adopting the above technical solution, the groove makes the abutment strip relatively easier to break when abutted by the support ring plate, and the broken part of the abutment strip can be controlled, thereby reducing the possibility of the broken part of the abutment strip interfering with the support ring plate.

[0021] Optionally, the interior of the clamping ring plate is a hollow structure, and the control component includes a control tube, a sealing tube and a control valve arranged in the sealing tube. The control tube is passed through the prefabricated segment and connected to the interior of the clamping ring plate. The sealing tube is inserted and threadedly connected to the control tube. The control tube is used to pour filler into the interior of the clamping ring plate.

[0022] By adopting the above technical solution, when the clamping part is inserted into the clamping ring groove, the filler is poured into the clamping ring plate through the control tube, and under the action of the filler, the inner wall of the clamping ring groove shrinks and the clamping part is clamped; and after the filler is filled, the sealing tube can be closed through the control tube, and the sealing tube is rotated at this time to perform secondary pre-tightening on the clamping ring plate to optimize the clamping stability.

[0023] Optionally, a limiting bracket is fixedly connected to the interior of the snap ring plate, and the limiting bracket is arranged at a position corresponding to the inner wall of the snap ring groove that is recessed away from the opening.

[0024] By adopting the above technical solution, since the clamping ring plate is made of elastic material, the inner wall of the clamping ring groove will shrink synchronously during the process of pouring the filler. At this time, the inner wall of the clamping ring groove away from the edge of the opening will apply a reverse thrust to the clamping part, and the limiting bracket can limit the deformation of the inner wall of the clamping ring groove away from the opening side, thereby reducing the possibility of the clamping part being pushed back out of the clamping ring groove due to excessive pressure.

[0025] Optionally, the two parallel side walls of the snap ring groove are both provided with abutting parts for abutting the snapping part, and the inner wall of the snap ring groove corresponding to the abutting part is formed with a number of limiting strips made of water-swellable rubber, and the limiting strips are clamped in the snapping part.

[0026] By adopting the above technical solution, during the process of pouring the filler into the inside of the clamping ring plate, since the clamping ring plate is made of elastic material, different parts will have different degrees of deformation under the pressure of the filler, resulting in relatively poor clamping tightness. At this time, the abutment part can make the inner walls of the clamping ring groove that are parallel to each other shrink toward each other as a whole, so that the clamping part can be relatively tightly combined with the inner wall of the clamping ring groove; and in this process, the limiting strip is arranged in the clamping part, which can further optimize the stability of the clamping, and the limiting strip is made of water-swelling rubber, which can further optimize the sealing between the clamping part and the inner wall of the clamping ring groove.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] When in use, several prefabricated segments are spliced ​​together and anchored by anchors to form the main structure of the pipe gallery. During the splicing process, since the fixing portion is preset in one of the prefabricated segments that are spliced ​​together, the clamping portion is inserted and bonded into the clamping ring groove through the relatively sliding prefabricated segments, and the deformed portion is clamped in the gap between the two prefabricated segments that are spliced ​​together to serve as a seal; at the same time, the clamping portion is clamped by the control member, so that when geological settlement occurs, the sealing ring plate is stably connected to the two adjacent prefabricated segments through the clamping portion clamped by the clamping ring plate and the fixing portion preset in the prefabricated segment, and in this process, The deformation part adapts to the relative displacement of two adjacent prefabricated segments caused by settlement, thereby adapting to the displacement caused by settlement and stably connecting the sealing ring plate, effectively reducing the influence of settlement on the sealing stability. Compared with the sealing ring clamped in the splicing part of the prefabricated segment, the possibility of the sealing ring and the prefabricated segment being separated due to the relative displacement of the two adjacent prefabricated segments can be effectively reduced; in addition, since the sealing ring plate is expected to be pre-placed in the prefabricated segment, compared with clamping the sealing ring during the movement of the two prefabricated segments toward each other on site, the purpose of optimizing construction convenience can also be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the local structure of an embodiment of the present application.

[0030] Figure 2 It is a structural diagram of the anchor in the embodiment of the present application.

[0031] Figure 3 yes Figure 1 Schematic diagram of the cross-sectional structure along line AA.

[0032] Figure 4 yes Figure 3 Schematic diagram of the enlarged structure of part B.

[0033] Figure 5 yes Figure 3 Schematic diagram of the enlarged structure of part C.

[0034] Figure 6 It is a schematic diagram of the cross-sectional structure of the sealing member and the connecting pipe in the embodiment of the present application.

[0035] Explanation of Reference Numerals: 1. Prefabricated segment; 12. Socket; 13. Insertion port; 14. Lighting module; 141. Lighting port; 15. Drainage channel; 151. Grid plate; 16. Ventilation shaft; 17. Anchor platform; 2. Anchor; 21. Anchor cable; 22. Anchor pipe; 23. Nut; 3. Sealing assembly; 31. Sealing ring plate; 311. Fixing portion; 312. Deformation portion; 313. Clamping portion; 314. Support ring plate; 315. Sealing ring groove; 316. Connecting pipe; 32. Snap ring plate; 321. Snap ring groove; 322. Limiting bracket; 323. Abutment portion; 324. Limiting strip; 33. Control member; 331. Control pipe; 332. Blocking pipe; 333. Control valve; 34. Supporting ring pipe; 341. Recess; 342. Abutment strip; 343. Bevel; 35. Blocking member; 351. Blocking rod; 352. Blocking elastic plate. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1-6 This application is described in further detail.

[0037] The embodiment of the present application discloses a prefabricated municipal pipe corridor. Figure 1The prefabricated municipal pipe corridor includes several prefabricated segments 1, anchors 2 and sealing components 3 that are spliced ​​together in sequence. The prefabricated segment 1 is a prefabricated pipe segment of the pipe corridor. The inner edge of one end of the prefabricated segment 1 is provided with an annular groove to form a receiving interface 12. The outer edge of the other end of the prefabricated segment 1 is provided with an annular groove to form a plug-in interface 13. The plug-in interface 13 is plugged into the receiving interface 12 of the adjacent prefabricated segment 1 so that several prefabricated segments 1 can be spliced ​​together. Among them, several lighting modules 14 are also provided on the top of the prefabricated segment 1. Several lighting ports 141 are provided on the top of the prefabricated segment 1. The lighting module 14 is a light guide lighting system pre-formed on a concrete base to guide the light from the ground to the interior of the prefabricated segment 1 for lighting. The installation part of the lighting module 14 is assembled on the opening edge of the lighting port 141 before backfilling after the prefabricated segment 1 is assembled, and is sealed and waterproofed with sealing paste and waterproof board.

[0038] In addition, several drainage channels 15 are formed in the precast segments 1. The drainage channels 15 of adjacent precast segments 1 are interconnected, and the opening edges of the drainage channels 15 are covered with mesh panels 151 for emergency drainage. At the same time, ventilation shafts 16 are also assembled on the tops of some precast segments 1 for ventilation.

[0039] Reference Figure 1 and Figure 2 The inner walls of both ends of the precast segment 1 are formed with several anchoring platforms 17. The anchoring platforms 17 at the same end of the precast segment 1 are circumferentially distributed along the inner wall of the precast segment 1. The anchor 2 includes an anchor cable 21, anchor tubes 22 fixedly connected to both ends of the anchor cable 21, and several nuts 23 threadedly connected to the anchor tubes 22. The anchor cable 21 passes through the two anchoring platforms 17 at the opposite ends of two adjacent precast segments 1. The two anchoring platforms 17 through which the anchor cable 21 passes are clamped between the nuts 23 on the two anchor tubes 22, thereby anchoring the two adjacent precast segments 1 together.

[0040] Reference Figure 3 and Figure 4 Specifically, the sealing assembly 3 includes a sealing ring plate 31 and a snap ring plate 32. Both the sealing ring plate 31 and the snap ring plate 32 are made of elastic sealing materials, such as rubber or silicone. The sealing ring plate 31 and the snap ring plate 32 are both annular plate structures with tubular inner walls. The sealing ring plate 31 includes a fixed portion 311, a deforming portion 312 and a snap-fit ​​portion 313 distributed in sequence along the central axis, and the fixed portion 311, the deforming portion 312 and the snap-fit ​​portion 313 are integrally formed. The fixed portion 311 is preset as a whole in the end face of the plug-in port 13, and the deforming portion 312 is clamped between the plug-in port 13 and the receiving port 12 of two adjacent prefabricated segments 1 to serve as a seal. Among them, the deforming portion 312 is an annular tubular structure to reduce the possibility of deformation during assembly.

[0041] The clamping ring plate 32 is integrally pre-set within the end surface of the receiving port 12, and a clamping ring groove 321 is formed on the clamping ring plate 32, which is recessed toward the interior of the prefabricated segment 1. The clamping portion 313 is integrally clamped within the clamping ring groove 321. The prefabricated segment 1 is provided with a control member 33 that clamps the clamping portion 313 after the clamping portion 313 is inserted into the clamping ring groove 321.

[0042] During the process of assembling the prefabricated segments 1, it is only necessary to gradually insert the clamping portion 313 into the clamping ring groove 321 so that the deformation portion 312 is clamped in the gap between the two prefabricated segments 1, and at the same time, the control part 33 is used to clamp the clamping ring plate 32 to enable the deformation portion 312 to be relatively stably connected to the two adjacent prefabricated segments 1. At this time, even if the two adjacent prefabricated segments 1 are relatively displaced due to settlement, the deformation portion 312 can still be sealed in the gap between the two adjacent prefabricated segments 1 through elastic deformation, thereby forming a stable sealing structure while also meeting the requirements of assembly-type construction.

[0043] Of course, in other embodiments, the clamping ring plate 32 may also be entirely preset in the end surface of the inserting port 13 , and the fixing portion 311 may be entirely preset in the end surface of the receiving port 12 .

[0044] Reference Figure 4 and Figure 5 In addition, in order to reduce the possibility of the clamping portion 313 being misaligned relative to the clamping ring groove 321 due to the elastic deformation of the deformation portion 312 and the clamping portion 313 during the splicing process of the prefabricated segment 1, a supporting ring plate 314 is embedded in the clamping portion 313 to support the clamping portion 313. At the same time, it can also limit the elastic deformation of the clamping portion 313, so that the clamping portion 313 can be clamped more tightly in cooperation with the clamping ring plate 32.

[0045] A support ring tube 34 adapted to the inner wall is provided inside the deformation portion 312. The support ring tube 34 is an annular tubular structure, and the support ring plate 314 and the support ring tube 34 are arranged to slide relative to each other, so that the support ring tube 34 and the support ring plate 314 can adapt to the position changes caused by settlement while reducing the possibility of deformation of the deformation portion 312 and the clamping portion 313 during the assembly process of the prefabricated segment 1, so that the clamping portion 313 can be relatively accurately clamped in the clamping ring groove 321 during the splicing process of the prefabricated segment 1.

[0046] Reference Figure 4 and Figure 5A sealing ring groove 315 is formed on the edge of the clamping portion 313 away from the deforming portion 312 to which it is connected. The sealing ring groove 315 extends into the side edge of the support ring plate 314. The interior of the deforming portion 312 is filled with sealant, and connecting pipes 316 are inserted through the clamping portion 313 and the support ring plate 314. At least one connecting pipe 316 is provided, for example, one, two, or more connecting pipes 316. In the embodiment of the present application, multiple connecting pipes 316 are provided, and the multiple connecting pipes 316 are distributed around the central axis of the clamping portion 313. The connecting pipes 316 are connected to the sealing ring groove 315 and the interior of the deforming portion 312 to guide the sealant out and guide the sealant through the sealing ring groove 315 to the edge of the clamping portion 313, thereby fully contacting the inner wall of the clamping ring groove 321 and relatively fully bonding the clamping portion 313 to the inner wall of the clamping ring groove 321 to further optimize the stability of the seal. At the same time, a sealing piece 35 for controlling the opening and closing of the connecting tube 316 is provided on the connecting tube 316, so that before the clamping part 313 is clamped in the clamping ring groove 321, the sealant can also assist in strengthening the strength of the deformation part 312 and the supporting ring tube 34, further reducing the possibility of deformation. At the same time, after the clamping part 313 is clamped in the clamping ring groove 321, the sealant can be discharged through the connecting tube 316, thereby achieving sealing processing without the need for additional glue to be applied before clamping.

[0047] Reference Figure 5 and Figure 6 Specifically, the blocking member 35 includes a blocking rod 351 and a plurality of blocking elastic plates 352. The blocking rod 351 is threadedly connected to the connecting tube 316 before the engaging portion 313 is engaged with the engaging ring groove 321. The blocking elastic plates 352 are elastically deformable and, for example, are made of an elastic material or a plastic with a gradually decreasing thickness. In the embodiment of the present application, they are made of plastic. The blocking elastic plates 352 are located on the side of the blocking rod 351 facing the support ring tube 34. In the embodiment of the present application, the blocking member 35 includes six blocking elastic plates 352, which are arranged around the central axis of the connecting tube 316. The six blocking elastic plates 352 are spliced ​​together and their projections along the axial direction of the connecting tube 316 form a circular shape. The edges of the six blocking elastic plates 352 away from the center of the circle are fixedly connected to the inner wall of the connecting tube 316. The thickness of the blocking elastic plates 352 increases gradually from the center of the circle to the edge connected to the inner wall of the connecting tube 316. Among them, the sealing rod 351 abuts against the sealing elastic plate 352 before the clamping portion 313 is clamped into the clamping ring groove 321, so as to seal the connecting pipe 316 while reducing the possibility of direct overflow of the sealant after the sealing rod 351 is detached due to the deformation of the sealing elastic plate 352.

[0048] During use, it is only necessary to remove the blocking rod 351 relative to the connecting tube 316 before the clamping portion 313 is clamped into the clamping ring groove 321. At this time, the blocking elastic plates 352 are spliced ​​together and block the connecting tube 316 to prevent the sealant from flowing out of the deformable portion 312. After the clamping portion 313 is clamped into the clamping ring groove 321, when two adjacent prefabricated segments 1 are pre-tightened by the anchor cable 21 of the anchor 2, a relatively large pressure is applied to the deformable portion 312. At this time, the sealant causes the end of the blocking elastic plate 352 to deform toward the central axis of the connecting tube 316 and guide the sealant out. At this time, the sealant will flow into the sealing ring groove 315 and the clamping ring groove 321, thereby relatively tightly bonding the clamping portion 313 to the clamping ring plate 32 and optimizing the convenience of construction.

[0049] Of course, in other embodiments, the blocking member 35 may also be a pressure valve, which opens the blocking member 35 and discharges the sealant through the pressure during the pre-tightening process of the prefabricated segment 1 .

[0050] Reference Figure 4 and Figure 5 Furthermore, to allow the support ring tube 34 and the support ring plate 314 to slide relative to each other and to allow the deformable portion 312 to deform to a certain extent, the support ring tube 34 is provided with a plurality of recesses 341. These recesses 341 are circumferentially distributed along the outer wall of the support ring tube 34 on the side facing the support ring plate 314, and the recesses 341 penetrate the wall of the support ring tube 34. An abutment bar 342 is formed between two adjacent recesses 341, and the support ring plate 314 abuts against the abutment bar 342 before pre-tightening the prefabricated segment 1, thereby reducing the possibility of the clamping portion 313 yielding during insertion into the clamping ring groove 321. Furthermore, due to the presence of the recesses 341, the abutment bar 342 is more easily deformed and broken. Therefore, during the pre-tightening process of the prefabricated segment 1, the support ring plate 314 can abut against the abutment bar 342, causing it to deform or even break, thereby allowing the deformable portion 312 to have a certain degree of deformation.

[0051] Reference Figure 4 and Figure 5 At the same time, in order to reduce the deformation of the deformation portion 312 caused by the abutment strip 342 and the interference between the support ring plate 314 and the support ring tube 34, the abutment strip 342 is respectively provided with a groove 343 at both ends along its own length direction, so that the abutment strip 342 can be more easily broken relative to the support ring tube 34. At the same time, since a certain amount of sealant remains in the support ring tube 34 during pre-tightening, the broken abutment strip 342 can still be bonded to the inner wall of the support ring tube 34, which can reduce the oxidation effect of the support ring tube 34 and reduce the possibility of the abutment strip 342 damaging the deformation portion 312 during the deformation process.

[0052] Reference Figure 4 and Figure 5Specifically, the interior of the clamping ring plate 32 is hollow, and the control member 33 includes a control tube 331, a blocking tube 332, and a control valve 333. The control tube 331 passes through the clamping ring plate 32 and the prefabricated segment 1 and communicates with the interior of the clamping ring plate 32. The control tube 331 communicates with the interior of the prefabricated segment 1 and is used to introduce external filler into the interior of the clamping ring plate 32, causing the inner wall of the clamping ring groove 321 in the clamping ring plate 32 to contract and clamp the clamping portion 313. The filler is mortar, preferably quick-setting mortar, but can also be foamed plastic.

[0053] The blocking tube 332 is coaxially inserted and threadedly connected to the control tube 331, and the control valve 333 is installed on the blocking tube 332 to control the on and off of the blocking tube 332. The control valve 333 is preferably a one-way valve and the flow direction is toward the inside of the clamping ring plate 32. When in use, external fillers can be introduced into the blocking tube 332. After the introduction is completed, the blocking tube 332 is rotated so that the blocking tube 332 is located entirely in the control tube 331, thereby assisting in further pressurizing the mortar in the clamping ring plate 32. At the same time, no additional measures are required to block the control tube 331 and the blocking tube 332 to maintain the flatness of the inner wall of the prefabricated segment 1, so as to facilitate construction.

[0054] Reference Figure 4 and Figure 5 Furthermore, because the snap ring plate 32 is made of an elastic material, the bottom wall of the snap ring groove 321, which is away from the opening, will also expand toward the snap portion 313, exerting a thrust in the direction of the snap portion 313. To limit the deformation of the snap ring plate 32 located at the bottom wall of the snap ring groove 321, a limiting bracket 322 is fixedly connected to the interior of the snap ring plate 32. The limiting bracket 322 is fixedly connected to the inner wall of the snap ring plate 32 and is disposed corresponding to the bottom wall of the snap ring groove 321, which is away from the opening.

[0055] The two parallel side walls of the snap ring groove 321 are each provided with an abutment portion 323 for mating with the snap portion 313. The abutment portion 323 is a plate-like structure made of a hard material, such as an alloy or engineering plastic. This allows the inner wall of the snap ring groove 321 to fit relatively tightly against the outer wall of the snap portion 313 when deformed.

[0056] Reference Figure 4 At the same time, a plurality of limiting strips 324 are formed on the inner wall of the snap ring groove 321 at positions corresponding to the abutment portion 323. The limiting strips 324 are made of water-swellable rubber and are distributed along the depth direction of the snap ring groove 321. The limiting strips 324 are locked in the snap ring portion 313, thereby further limiting the possibility of the snap ring portion 313 being separated from the snap ring groove 321.

[0057] The implementation principle of the embodiment of the present application is: when in use, since the clamping portion 313 is clamped and bonded in the clamping ring groove 321, the gap between two adjacent prefabricated segments 1 can be completely blocked by the deformation portion 312. Even if deformation occurs, the possibility of leakage in the gap between two adjacent prefabricated segments 1 can be effectively reduced due to the clamping of the clamping ring plate 32 and the pre-set fixing portion 311 in the prefabricated segment 1.

[0058] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A prefabricated municipal pipe gallery, characterized by: It comprises a plurality of prefabricated segments (1) that are spliced ​​one after another, an anchor (2) for anchoring two adjacent prefabricated segments (1), and a sealing assembly (3); The anchor (2) is arranged at the joint between two adjacent prefabricated segments (1); The sealing assembly (3) comprises a sealing ring plate (31) and a clamping ring plate (32) made of an elastic material. The sealing ring plate (31) comprises a fixing portion (311), a deformation portion (312) and a clamping portion (313) distributed along the central axis. The fixing portion (311) is preset at one end of the prefabricated segment (1). The deformation portion (312) is used to seal the gap between adjacent prefabricated segments (1) and is clamped between two adjacent prefabricated segments (1). The clamping ring plate (32) is preset on the end surface of the prefabricated segment (1) to which the fixing portion (311) is spliced, and the clamping ring plate (32) is formed with a clamping ring groove (321) opening toward the adjacent prefabricated segment (1), the clamping portion (313) is integrally inserted into the clamping ring groove (321), and the prefabricated segment (1) is provided with a control member (33) for enabling the clamping ring plate (32) to clamp the clamping portion (313); A supporting ring plate (314) for supporting the clamping portion (313) is embedded inside the clamping portion (313); The deformation portion (312) is an annular tubular structure, a support ring tube (34) for supporting the deformation portion (312) is provided inside the deformation portion (312), the support ring tube (34) is an annular tubular structure, and the support ring plate (314) and the support ring tube (34) are arranged to slide relative to each other; The deformable portion (312) is filled with sealant, and a sealing ring groove (315) is formed on the edge of the clamping portion (313) away from the deformable portion (312) to which it is connected. A connecting pipe (316) for leading out the sealant is passed through the clamping portion (313) and the supporting ring plate (314). The connecting pipe (316) is connected to the sealing ring groove (315), and the connecting pipe (316) is provided with a sealing member (35) for controlling the opening and closing of the connecting pipe (316) during the splicing process of the prefabricated segments (1).

2. The prefabricated municipal pipe gallery according to claim 1, characterized in that: The sealing member (35) includes a sealing rod (351) and a plurality of sealing elastic plates (352), wherein the sealing rod (351) is coaxially threadedly connected to the connecting tube (316) before the prefabricated segments (1) are spliced ​​together, and the plurality of sealing elastic plates (352) are located on the side of the sealing rod (351) facing the supporting ring tube (34), and the plurality of sealing elastic plates (352) are spliced ​​together and adapted to the connecting tube (316) along the axial projection of the connecting tube (316), and the outer ring edge of the sealing elastic plate (352) is fixedly connected to the inner wall of the connecting tube (316), and the sealing rod (351) abuts against the plurality of sealing elastic plates (352) before the prefabricated segments (1) are spliced ​​together.

3. The prefabricated municipal pipe gallery according to claim 2, characterized in that: A plurality of retreat openings (341) distributed along the circumferential direction of the support ring tube (34) are provided on one side of the support ring tube (34) facing the clamping portion (313), and an abutment strip (342) is formed between two adjacent retreat openings (341), and the support ring plate (314) abuts against the abutment strip (342).

4. The prefabricated municipal pipe gallery according to claim 3, characterized in that: The abutting strip (342) is provided with grooves (343) at both ends along the length direction.

5. The prefabricated municipal pipe gallery according to claim 4, characterized in that: The interior of the clamping ring plate (32) is a hollow structure. The control component (33) comprises a control tube (331), a blocking tube (332), and a control valve (333) arranged on the blocking tube (332). The control tube (331) is passed through the prefabricated segment (1) and communicated with the interior of the clamping ring plate (32). The blocking tube (332) is inserted and threadedly connected to the control tube (331). The control tube (331) is used to inject a filler into the interior of the clamping ring plate (32).

6. The prefabricated municipal pipe gallery according to claim 5, characterized in that: A limiting bracket (322) is fixedly connected to the interior of the snap ring plate (32), and the limiting bracket (322) is arranged at a position corresponding to the inner wall of the snap ring groove (321) that is recessed away from the opening.

7. The prefabricated municipal pipe gallery according to claim 6, characterized in that: The two mutually parallel side walls of the snap ring groove (321) are both provided with abutting portions (323) for abutting the snap ring portion (313), and a plurality of limiting strips (324) made of water-swellable rubber are formed on the inner wall of the snap ring groove (321) at positions corresponding to the abutting portions (323), and the limiting strips (324) are clamped in the snap ring portion (313).

Images