Roadbed drainage device and roadbed structure
By designing a roadbed drainage device with detachable piles and spiral blades, the problem of high installation cost of existing railway roadbed drainage pipes is solved, and fast, low-cost construction and effective water drainage are achieved, avoiding roadbed mud and slurry.
Patent Information
- Application Number
- CN202422856982.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-21
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-11-21
AI Technical Summary
The installation cost of existing railway roadbed drainage pipes is high, and it consumes manpower and material resources. In addition, the traditional method requires digging up the roadbed for installation and then burying it, which has low construction efficiency.
A roadbed drainage device is designed, including a pile body, a drainage part and spiral blades. The pile body can be connected to a drilling rig. The spiral blades are arranged at intervals along the axial direction on the outer wall of the pile body to form a groundwater flow channel. The spiral blades and the drainage trough structure promote water discharge. The filter cover is detachably connected to the pile body to facilitate construction.
It reduces the installation difficulty and construction cost, improves the construction efficiency, and can be quickly screwed into the roadbed to complete the construction, effectively reducing the moisture content of the roadbed soil and avoiding mud and slurry on the roadbed.
Smart Images
Figure CN223397993U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of railway facilities, in particular to a roadbed drainage device and a roadbed structure. Background Art
[0002] Subgrade mud and sluicing is a common hazard in railways, often occurring in earthen roadbed sections. Rainwater infiltrates the subgrade, leading to poor drainage and retention. When a train passes at high speed, the high-frequency train load causes the retained water, mixed with fine particles, to migrate upward, causing mud and sluicing. This hazard reduces the bearing capacity of the subgrade surface and, in severe cases, even disrupts traffic. In some cases, subgrade mud and sluicing is addressed by dredging, constructing drainage systems, replacing the subgrade fill, excavating and laying geotextile seals or non-woven geofiber infiltration layers. Excavating ballast and laying drainage pipes are currently the most widely used methods. However, traditional drainage pipe installation is costly and labor-intensive, requiring the railway subgrade to be excavated and installed, which then needs to be reburied. Utility Model Content
[0003] The embodiments of the present invention provide a roadbed drainage device and a roadbed structure, which can solve the problems of high installation cost and waste of manpower and material resources in existing roadbed drainage pipes.
[0004] In a first aspect, an embodiment of the present invention provides a roadbed drainage device and a roadbed structure, comprising:
[0005] The pile body is configured to be detachably connected to the drilling rig;
[0006] a drainage portion, disposed on an outer wall of the pile body, the drainage portion penetrating the pile body in an axial direction of the pile body to form a channel for groundwater to flow; and
[0007] A plurality of spiral blades are provided on the outer wall of the pile body, and the plurality of spiral blades are arranged at intervals along the axial direction of the pile body.
[0008] In one embodiment, the drainage portion includes a plurality of drainage grooves, which are arranged circumferentially around the pile body at intervals, and the drainage grooves include:
[0009] A first drainage trough section is provided on the outer wall of the pile body; and
[0010] a second drainage trough section, provided at one end of the first drainage trough section close to the pile axis, the second drainage trough section being in communication with the first drainage trough section;
[0011] The maximum width of the cross section of the first drainage trough segment is smaller than the maximum width of the cross section of the second drainage trough segment.
[0012] In one embodiment, the width of the opening of the first drainage groove segment is 0.3 mm, and the maximum width of the cross section of the second drainage groove segment is 1 mm.
[0013] In one embodiment, the cross section of the first drainage trough segment is rectangular, and the cross section of the second drainage trough segment is circular.
[0014] In one embodiment, the roadbed drainage device further comprises a filter cover, the filter cover is detachably connected to one end of the pile body, and the filter cover is in communication with the pile body;
[0015] In which, the pile body is provided with multiple water inlets, which are arranged at intervals along the axial direction of the pile body, and the multiple water inlets and the multiple spiral blades are staggered in the axial direction of the pile body, so that groundwater flows into the pile body through the water inlets and is discharged through the filter cover.
[0016] In one embodiment, the filter housing comprises:
[0017] a fixing portion, one end of which is detachably connected to the pile body;
[0018] a supporting portion, disposed at an end of the fixing portion away from the pile body, the supporting portion being in communication with the fixing portion; and
[0019] The arch cover is arranged at one end of the support portion away from the fixing portion, and a plurality of filtering holes are arranged on the arch cover.
[0020] In one embodiment, the arch cover is spherical and protrudes toward a side away from the support portion.
[0021] In one embodiment, the pile body is filled with a water absorbent, and a filter is provided between the pile body and the filter cover.
[0022] In a second aspect, an embodiment of the present invention provides a roadbed structure, in which the roadbed drainage device as described above is installed.
[0023] In one embodiment, a plurality of roadbed drainage devices are provided on both sides of the roadbed, and the plurality of roadbed drainage devices are arranged at intervals along the extension direction of the roadbed; the filter covers of the roadbed drainage devices are located outside the roadbed, and the spiral blades of the roadbed drainage devices are located inside the roadbed;
[0024] Wherein, the roadbed drainage device is installed at an angle, and the end of the roadbed drainage device provided with the filter cover is lower than the end of the roadbed drainage device provided with the spiral blades.
[0025] Compared with the prior art, the advantages of the embodiments of the present invention are that, by constructing the pile body to be detachably connected to the drilling rig and providing a plurality of spiral blades on the outer wall of the pile body, the pile body can be directly broken through the rock and selected into the roadbed under the action of the drilling rig, so that the pile body can be more easily rotated into the roadbed, reducing the difficulty of installation. Compared with the existing drainage pipe installation, which requires the railway roadbed to be dug up and the drainage device to be installed, and then the device needs to be buried again after installation, the present invention does not need to dig up the roadbed and then bury it, and can be completed by directly screwing it in, which speeds up the construction speed, improves the construction efficiency, and greatly saves manpower, material resources and construction costs. By providing a drainage part as a channel for groundwater to flow in, water in the roadbed soil can be discharged along the drainage part, thereby effectively reducing the water content in the soil and preventing water from being retained in the roadbed and causing the roadbed to overflow and mud. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] The present invention will be described in more detail below based on embodiments with reference to the accompanying drawings.
[0027] Figure 1 This is a schematic structural diagram of a roadbed drainage device provided by an embodiment of the present utility model;
[0028] Figure 2 yes Figure 1 A schematic structural diagram of a pile body provided in the embodiment;
[0029] Figure 3 yes Figure 1 A schematic structural diagram of a spiral blade provided in the embodiment;
[0030] Figure 4 yes Figure 1 A schematic structural diagram of a spiral blade provided in an embodiment of the present invention from another perspective;
[0031] Figure 5 yes Figure 1 A schematic structural diagram of the filter cover provided in the embodiment;
[0032] Figure 6 It is a structural schematic diagram of a roadbed structure provided by another embodiment of the utility model;
[0033] Figure 7 yes Figure 6 A schematic structural diagram of the roadbed structure provided in the embodiment from another perspective.
[0034] Reference numerals:
[0035] 10. Pile body;
[0036] 20. Drainage portion; 210. Drainage trough; 2101. First drainage trough section; 2102. Second drainage trough section;
[0037] 30. Spiral blades;
[0038] 40. Filter cover; 410. Fixing portion; 420. Support portion; 430. Arch cover
[0039] 50. Water inlet; 510. Water inlet hole;
[0040] 60, roadbed; 610, track A; 620, track B. DETAILED DESCRIPTION
[0041] The present invention will be further described below with reference to the accompanying drawings.
[0042] Subgrade mud and sluicing is a common hazard in railways, often occurring in earthen roadbed sections. Rainwater infiltrates the subgrade, leading to poor drainage and retention. When a train passes at high speed, the high-frequency train load causes the retained water, mixed with fine particles, to migrate upward, causing mud and sluicing. This hazard reduces the bearing capacity of the subgrade surface and, in severe cases, even disrupts traffic. In some cases, subgrade mud and sluicing is addressed by dredging, constructing drainage systems, replacing the subgrade fill, excavating and laying geotextile seals or non-woven geofiber infiltration layers. Excavating ballast and laying drainage pipes are currently the most widely used methods. However, traditional drainage pipe installation is costly and labor-intensive, requiring the railway subgrade to be excavated and installed, which then needs to be reburied.
[0043] Example 1
[0044] like Figure 1-Figure 3 As shown, in order to solve the above technical problems, an embodiment of the utility model provides a roadbed drainage device, including a pile body 10, a drainage part 20 and a plurality of spiral blades 30; the pile body 10 is constructed to be detachably connected to a drilling rig; the drainage part 20 is arranged on the outer wall of the pile body 10, and the drainage part 20 passes through the pile body 10 in the axial direction of the pile body 10 to form a channel for groundwater flow; the plurality of spiral blades 30 are arranged on the outer wall of the pile body 10, and the plurality of spiral blades 30 are arranged at intervals along the axial direction of the pile body 10.
[0045] By constructing the pile body 10 to be detachably connected to the drilling rig and providing a plurality of spiral blades 30 on the outer wall of the pile body 10, the pile body 10 can be directly broken through the rock and selected into the roadbed 60 under the action of the drilling rig, so that the pile body 10 can be more easily rotated into the roadbed 60, reducing the difficulty of installation. Compared with the existing drainage pipe installation, which requires the railway roadbed 60 to be excavated and the drainage device to be installed, and then the drainage device needs to be reburied after installation, the present utility model does not need to be excavated and then buried, and can be completed by directly screwing it in, which speeds up the construction speed, improves the construction efficiency, and greatly saves manpower, material resources and construction costs. By providing the drainage portion 20 as a channel for groundwater to flow in, the water in the soil of the roadbed 60 can be discharged along the drainage portion 20, thereby effectively reducing the water content in the soil and preventing water from being retained in the roadbed 60 and causing the roadbed 60 to overflow and mud.
[0046] It should be noted that the pile body 10 is a hollow structure; one end of the pile body 10 is sharp so that the pile body 10 can be inserted into the soil; the other end of the pile body 10 is used to be detachably connected to the drilling rig.
[0047] It should also be noted that the number of spiral blades 30 is set according to actual needs, and the spiral blades 30 can be set only on part of the section of the pile body 10, such as Figure 1 、 Figure 3 As shown, a plurality of spiral blades 30 are located at one end of the pile body 10 where a sharp corner is provided.
[0048] It should also be noted that groundwater is the water in the soil of the roadbed 60.
[0049] like Figure 2 As shown, in some embodiments, the drainage portion 20 includes a plurality of drainage grooves 210, which are arranged circumferentially around the pile body 10, and the drainage grooves 210 include a first drainage groove section 2101 and a second drainage groove section 2102; the first drainage groove section 2101 is arranged on the outer wall of the pile body 10; the second drainage groove section 2102 is arranged at one end of the first drainage groove section 2101 close to the axis of the pile body 10, and the second drainage groove section 2102 is connected to the first drainage groove section 2101; wherein, the maximum cross-sectional width of the first drainage groove section 2101 is smaller than the maximum cross-sectional width of the second drainage groove section 2102.
[0050] By setting the maximum cross-sectional width of the first drainage trough section 2101 to be smaller than the maximum cross-sectional width of the second drainage trough section 2102, a structure with a larger interior and a smaller exterior is formed, thereby providing conditions for the occurrence of capillary phenomena. Under the action of capillary force, water in the soil of the roadbed 60 is forced to enter the drainage trough 210, thereby improving the drainage effect.
[0051] It should be noted that the cross section is a cross section perpendicular to the axial direction of the pile body 10 .
[0052] In some embodiments, the width of the opening of the first drainage groove segment 2101 is 0.3 mm, and the maximum width of the cross section of the second drainage groove segment 2102 is 1 mm.
[0053] By setting the opening width of the first drainage trough section 2101 to 0.3mm, the opening can effectively prevent soil particles carried by the water flow from entering the first drainage trough section 2101, and the soil particles settle due to gravity, thereby gathering on the outside of the pipe to form a natural water filtration structure, achieving water and soil separation without causing sedimentation and clogging. This prevents the opening width of the first drainage trough section 2101 from being too large, causing soil particles carried by the water flow to enter the first drainage trough 210 and cause clogging of the drainage section 20, and also prevents the opening width of the first drainage trough section 2101 from being too small, preventing water from entering. By setting the maximum cross-sectional width of the second drainage trough section 2102 to 1mm, this prevents the maximum cross-sectional width of the second drainage trough section 2102 from being too small, resulting in a small amount of water flow and slow drainage efficiency.
[0054] like Figure 2 As shown, in some embodiments, the cross-section of the first drainage trough segment 2101 is rectangular, and the cross-section of the second drainage trough segment 2102 is circular.
[0055] By setting the cross-section of the first drainage trough section 2101 to be rectangular and the cross-section of the second drainage trough section 2102 to be circular, the cross-section of the drainage portion 20 is made into an Ω shape. Due to its special structure of being larger inside and smaller outside, it has the conditions for the capillary phenomenon to occur, and under the action of capillary force, the water in the soil of the roadbed 60 is prompted to enter the drainage trough 210.
[0056] It should be noted that if Figure 2 As shown, when the cross-section of the first drainage trough segment 2101 is rectangular, the maximum width of the cross-section of the first drainage trough segment 2101 is the length L1 of the rectangle, and the width of the opening of the first drainage trough segment 2101 is the length L1 of the rectangle; when the cross-section of the second drainage trough segment 2102 is circular, the maximum width of the cross-section of the second drainage trough segment 2102 is the diameter L2.
[0057] like Figure 4 As shown, in some embodiments, the helical line of the spiral blade 30 is an equiangular helical line and satisfies the following relationship:
[0058] ρ=ae kθ , r=ae kπ / 3
[0059] Wherein, ρ is the polar coordinate equation of the helical line of the spiral blade 30 , a=1.1-1.5, k=0.8-0.9, r is the radius of the spiral blade 30 , θ is the polar angle, and θ is 0-π / 3.
[0060] By setting the spiral blade 30 to adopt an equiangular spiral line, the spiral blade 30 has a better effect of applying screw-in force during the rock-breaking screw-in process, so that the pile body 10 can be screwed into the soil layer more easily, which not only saves project costs but also greatly improves construction efficiency.
[0061] like Figure 1 、 Figure 3 As shown, in some embodiments, the roadbed drainage device also includes a filter cover 40, which is detachably connected to one end of the pile body 10, and the filter cover 40 is communicated with the pile body 10; wherein, multiple water inlets 50 are arranged at intervals along the axial direction of the pile body 10, and the multiple water inlets 50 and the multiple spiral blades 30 are staggered in the axial direction of the pile body 10, so that groundwater flows into the pile body 10 through the water inlet 50 and is discharged through the filter cover 40.
[0062] The filter cover 40 and the water inlet 50 form a drainage channel. When the soil in the roadbed 60 is low in water, the water is drained through the drainage section 20. When the soil in the roadbed 60 is high in water, groundwater flows into the pile body 10 through the water inlet 50, is filtered by the filter cover 40, and then discharged. This creates two internal and external drainage channels, quickly draining the water from the roadbed 60. Furthermore, the detachable connection between the filter cover 40 and the pile body 10 facilitates replacement and clearing of blockages within the pile body 10, preventing clogging.
[0063] It should be noted that the water inlet portion 50 includes a plurality of water inlet holes 510 , and the plurality of water inlet holes 510 are arranged at equal intervals in the circumferential direction around the pile body 10 .
[0064] like Figure 5 As shown, in some embodiments, the filter cover 40 includes a fixing portion 410, a supporting portion 420 and an arch cover 430; one end of the fixing portion 410 is detachably connected to the pile body 10; the supporting portion 420 is arranged at an end of the fixing portion 410 away from the pile body 10, and the supporting portion 420 is communicated with the fixing portion 410; the arch cover 430 is arranged at an end of the supporting portion 420 away from the fixing portion 410, and a plurality of filter holes are provided on the arch cover 430.
[0065] It should be noted that the connection methods of the fixing portion 410 , the supporting portion 420 and the arch cover 430 include but are not limited to welding and one-piece mold forming.
[0066] It should also be noted that a plurality of through holes are provided at one end of the fixing portion 410 away from the supporting portion 420, through which screws are passed to detachably connect the fixing portion 410 to the pile body 10; when drilling a hole for installation on the roadbed 60, one end of the pile body 10 is detachably connected to the drilling rig to install the pile body 10 in the roadbed 60; after the drilling is completed, the drilling rig is removed and the filter cover 40 is detachably installed on one end of the pile body 10.
[0067] It should also be noted that the fixing portion 410 is cylindrical, the supporting portion 420 is truncated cone, and the diameter of the end of the supporting portion 420 close to the fixing portion 410 is smaller than the diameter of the end of the supporting portion 420 away from the fixing portion 410.
[0068] like Figure 5 As shown, in some embodiments, the arch cover 430 is spherical, and the arch cover 430 protrudes toward a side away from the support portion 420.
[0069] By providing the spherical arch cover 430, the pressure is evenly dispersed, thereby improving the stability and durability of the filter cover 40; in addition, the spherical arch cover 430 can provide a larger internal volume for filtering, thereby further improving the filtering effect.
[0070] In some embodiments, the pile body 10 is filled with a water absorbent, and a filter is provided between the pile body 10 and the filter cover 40 .
[0071] By filling the pile 10 with a water-absorbing element, accumulated water in the roadbed 60 soil is absorbed, significantly reducing the probability of mud and mud in the roadbed 60 soil. A filter screen is provided between the pile 10 and the filter cover 40 to prevent the water-absorbing element from being flushed out by the water flow, while also providing a filtering effect, thereby forming a two-layer filtration structure together with the filter cover 40.
[0072] It should be noted that the water absorbent is a highly water-absorbent resin.
[0073] Example 2
[0074] like Figure 6 、 Figure 7 As shown, at least one embodiment of the present invention further provides a roadbed 60 structure, in which a roadbed drainage device of any embodiment of the present invention is installed, thereby having all the technical effects brought about by the technical solutions of the above embodiments.
[0075] It should be noted that the roadbed 60 may be a ballasted track roadbed 60 .
[0076] like Figure 6 、 Figure 7 As shown, in some embodiments, a plurality of roadbed drainage devices are respectively provided on both sides of the roadbed 60, and the plurality of roadbed drainage devices are arranged at intervals along the extension direction of the roadbed 60; the filter cover 40 of the roadbed drainage device is located outside the roadbed 60, and the spiral blades 30 of the roadbed drainage device are located inside the roadbed 60; wherein, the roadbed drainage device is installed at an angle, and one end of the roadbed drainage device on which the filter cover 40 is provided is lower than one end of the roadbed drainage device on which the spiral blades 30 are provided.
[0077] By installing the roadbed drainage device at an angle, it is easy to drain the water in the drainage part 20; in addition, with the Ω-shaped drainage trough 210, when the water flows to the outlet of the drainage trough 210 and overflows, a siphon phenomenon will occur due to the height difference of the inclined installation, prompting the drainage part 20 to quickly absorb water from the soil, further improving the drainage speed.
[0078] It should be noted that if Figure 6 As shown, two sets of rails are laid on the roadbed 60, each set of rails includes an A rail 610 and a B rail 620. The pile body 10 is provided with an end with a sharp corner extending beyond the rail set, that is, the pile body 10 installed on the left side of the roadbed 60 needs to extend beyond the B rail 620, and the pile body 10 installed on the right side of the roadbed 60 needs to extend beyond the A rail 610. The extending distance can be 10 cm.
[0079] It should also be noted that there is an angle between the roadbed drainage device and the X direction, which is 10°-15°.
[0080] It should also be noted that the specific installation process of the roadbed drainage device is as follows:
[0081] (1) Drilling with a drilling rig - the drilling rig is driven to the corresponding point, the pile body 10 is drilled into the roadbed 60, and after drilling to the designated position, the connection between the pile body 10 and the drilling rig is disconnected, the drilling rig is driven away, and a new pile body 10 is reinstalled to continue drilling.
[0082] (2) Filling the pile body 10 with a water-absorbing member—Filling the water-absorbing member into the pile body 10 until the water-absorbing member reaches the top of the pile body 10;
[0083] (3) Installing the filter cover 40 on the pile body 10 - first fix the filter screen at one end of the pile body 10, and then install the filter cover 40 on the pile body 10.
[0084] While the present invention has been described with reference to preferred embodiments, various modifications may be made and equivalent components may be substituted without departing from the scope of the present invention. In particular, the various technical features described in the various embodiments may be combined in any manner, provided no structural conflicts exist. The present invention is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.
Claims
1. A roadbed drainage device, characterized in that: include: The pile body is configured to be detachably connected to the drilling rig; a drainage portion, provided on the outer wall of the pile body, the drainage portion penetrating the pile body in the axial direction of the pile body to form a channel for groundwater flow; as well as A plurality of spiral blades are provided on the outer wall of the pile body, and the plurality of spiral blades are arranged at intervals along the axial direction of the pile body.
2. The roadbed drainage device according to claim 1, characterized in that: The drainage portion includes a plurality of drainage grooves, which are arranged at intervals around the pile body in a circumferential direction. The drainage grooves include: A first drainage trough section is provided on the outer wall of the pile body; and a second drainage trough section, provided at one end of the first drainage trough section close to the pile axis, the second drainage trough section being in communication with the first drainage trough section; The maximum width of the cross section of the first drainage trough segment is smaller than the maximum width of the cross section of the second drainage trough segment.
3. The roadbed drainage device according to claim 2, characterized in that: The width of the opening of the first drainage groove segment is 0.3 mm, and the maximum width of the cross section of the second drainage groove segment is 1 mm.
4. The roadbed drainage device according to claim 2 or 3, characterized in that: The cross section of the first drainage trough section is rectangular, and the cross section of the second drainage trough section is circular.
5. The roadbed drainage device according to any one of claims 1 to 3, characterized in that: The roadbed drainage device further includes a filter cover, which is detachably connected to one end of the pile body and communicates with the pile body; In which, the pile body is provided with multiple water inlets, which are arranged at intervals along the axial direction of the pile body, and the multiple water inlets and the multiple spiral blades are staggered in the axial direction of the pile body, so that groundwater flows into the pile body through the water inlets and is discharged through the filter cover.
6. The roadbed drainage device according to claim 5, characterized in that: The filter cover comprises: a fixing portion, one end of which is detachably connected to the pile body; a supporting portion, disposed at an end of the fixing portion away from the pile body, the supporting portion being in communication with the fixing portion; and The arch cover is arranged at one end of the support portion away from the fixing portion, and a plurality of filtering holes are arranged on the arch cover.
7. The roadbed drainage device according to claim 6, characterized in that: The arch cover is spherical and protrudes toward a side away from the supporting portion.
8. The roadbed drainage device according to claim 5, characterized in that: The pile body is filled with a water absorbing member, and a filter screen is provided between the pile body and the filter cover.
9. A roadbed structure, characterized in that: A roadbed drainage device as claimed in any one of claims 1 to 8 is installed in the roadbed.
10. The roadbed structure according to claim 9, characterized in that: A plurality of roadbed drainage devices are respectively provided on both sides of the roadbed, and the plurality of roadbed drainage devices are arranged at intervals along the extension direction of the roadbed; the filter covers of the roadbed drainage devices are located outside the roadbed, and the spiral blades of the roadbed drainage devices are located inside the roadbed; Wherein, the roadbed drainage device is installed at an angle, and the end of the roadbed drainage device provided with the filter cover is lower than the end of the roadbed drainage device provided with the spiral blades.