CN218150972U - Temporary supporting structure for advanced tunnel primary corrugated plate - Google Patents
Temporary supporting structure for advanced tunnel primary corrugated plate Download PDFInfo
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- CN218150972U CN218150972U CN202222273544.8U CN202222273544U CN218150972U CN 218150972 U CN218150972 U CN 218150972U CN 202222273544 U CN202222273544 U CN 202222273544U CN 218150972 U CN218150972 U CN 218150972U
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Abstract
The utility model discloses a temporary support structure for a primary corrugated plate of a travelling tunnel, which is arranged on a track plate; the supporting structure comprises three supporting top arch rods, a middle step supporting upright post, a lower step supporting upright post, supporting cross beams and a contact body, the three supporting top arch rods are transversely arranged and are longitudinally arranged at intervals, the end parts of the middle supporting top arch rod and the rear supporting top arch rod are respectively connected with the middle step supporting upright post and the lower step supporting upright post, the lower step supporting upright post is supported on the second track plate through an upright post roller at the bottom of the lower step supporting upright post, and the middle step supporting upright post is supported on the first track plate through an upright post roller at the bottom of the middle step supporting upright post; the supporting top arch rods are connected through the supporting cross beams, the supporting cross beams are provided with a plurality of contact bodies at intervals along the length direction of the supporting cross beams, and the contact bodies are connected with arch feet of the upper step corrugated plate through the suspension support bodies. The utility model has the advantages that: simple structure has realized the support to the hunch foot department of upper step buckled plate.
Description
Technical Field
The utility model belongs to the technical field of the technique of tunnel support and specifically relates to an advance formula tunnel and just prop up interim bearing structure of buckled plate.
Background
With the rapid development of modern traffic facilities, various tunnel construction projects, such as urban subway tunnels and western mountain tunnels, emerge just like spring shoots after rain. With the continuous development of the supporting concept of the tunnel structure, particularly the continuous innovation and application of the new Austrian tunnel supporting form of the mountain tunnel, the yielding supporting concept is continuously paid more attention, namely, the outer side rock (soil) body is allowed to deform to a certain degree to release part of surrounding rock stress, and the tunnel supporting form of the assembled steel corrugated plate is adopted. The assembled steel corrugated plate supporting structure can exert the advantages of assembled quick supporting construction, but in the practical application process, tunnel excavation construction is not always excavated into a hole at one time due to the limitation of surrounding rock geological conditions, but a sectional layered excavation mode of a step method is adopted, and supporting corrugated plates are installed in layers on an excavation section according to specific layered excavation steps in the supporting process. For example, in a commonly adopted three-step construction process, corrugated board installation construction needs to be performed on an upper step, a middle step and a lower step excavation section in sequence. However, due to the influence of complex factors, the assembling interval between the upper step corrugated plate and the middle step corrugated plate is often longer, and the arch foot of the upper step corrugated plate is in a suspended state for a longer time, so that the upper step corrugated plate is deformed by obvious displacement, the supporting effect of the upper step corrugated plate is seriously influenced, and the integral splicing precision of the corrugated plate is seriously influenced. In order to enable the upper step to fully exert the supporting effect and overcome the self weight of the corrugated plate, a certain number of arch springing anchor rods are usually driven into surrounding rocks at the arch springing position of the upper step in the design. In practical engineering application, how to design a temporary supporting form achieves the purposes of reducing the using amount of an arch springing anchor rod and ensuring the supporting effect of an upper step arch springing is an urgent requirement of corrugated plate assembly construction in the step method construction process.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a travelling tunnel is according to the not enough of above-mentioned prior art and is just propped up interim bearing structure of buckled plate, through lay the track board in the tunnel and install bearing structure on the track board, has realized the support to the hunch foot department of upper step buckled plate.
The utility model discloses the purpose is realized accomplishing by following technical scheme:
the utility model provides a travelling tunnel is a corrugated plate temporary support structure just, its characterized in that: the supporting structure is arranged on a track slab, the track slab comprises a first track slab and a second track slab, the first track slab is arranged on a base of the middle step, and the second track slab is arranged on a base of the lower step or a tunnel bottom plate;
the supporting structure comprises three supporting top arch rods, a middle step supporting upright post, a lower step supporting upright post, a supporting cross beam and a contact body, wherein the supporting top arch rods are transversely arranged and are longitudinally arranged at intervals, the end parts of the supporting top arch rods positioned in the middle part and the supporting top arch rods positioned at the rear part are respectively connected with the middle step supporting upright post and the lower step supporting upright post, the lower step supporting upright post is slidably mounted on the second track plate through upright post rollers at the bottom of the lower step supporting upright post, and the middle step supporting upright post is slidably mounted on the first track plate through upright post rollers at the bottom of the middle step supporting upright post; support and pass through between the top arch bar supporting beam connects just supporting beam is provided with a plurality of along its length direction interval the contact body, the contact body is connected through the arch foot department of the suspension support body with the upper step buckled plate.
The contact body is positioned on the outer side of the supporting cross beam and comprises a guide rod, a rotary table, two oblique rod arms, a limiting ring and a limiting hook, one end of each of the two oblique rod arms is connected with the supporting cross beam, the other end of each of the two oblique rod arms is connected with the two ends of the guide rod, the guide rods are vertically arranged, the two ends of each guide rod are provided with a stop block, the rotary table is in threaded connection with the guide rods, the rotary table can move along the length direction of the guide rods through rotation, the upper surface of the rotary table is a rough surface, the upper surface of the rotary table supports the suspension bodies, and the suspension bodies with different heights are supported through adjusting the heights of the rotary table on the guide rods; the limiting ring is sleeved on the guide rod, the limiting ring can move along the length direction of the guide rod, the limiting hook is hinged with the limiting ring, and the suspension body is hooked through the hook of the limiting hook so as to limit the suspension body to deviate from the movement of the turntable.
The suspension support body comprises a suspension support plate, a connecting rod and an occluding plate, wherein two ends of the connecting rod are respectively and fixedly connected with the suspension support plate and the occluding plate, and a connecting hole is formed in the occluding plate; the lower surface of the suspension support plate is a rough surface, and the suspension support body is connected with the contact body through the close contact occlusion of the lower surface of the suspension support plate and the upper surface of the rotary table; the suspension support body is connected with the arch springing of the upper step corrugated plate by installing corresponding connecting pieces in the connecting holes; through hook department of spacing hook hooks hang being close to of fagging one side of upper step buckled plate, in order to restrict the board that hangs takes place to deviate the motion of carousel.
The supporting top arch bar in the middle is connected with the supporting cross beams in the front and the rear through a plurality of inhaul cables.
The height of the supporting arch rods is lower than that of the tunnel top plate.
The utility model has the advantages that: simple structure has realized the support to the hunch foot department of upper step buckled plate.
Drawings
FIG. 1 is a structural view of the support structure of the present invention;
FIG. 2 is a structural diagram of the contact of the present invention;
FIG. 3 is a structural view of the suspension body of the present invention;
FIG. 4 is a schematic view of the connection between the suspension and the upper corrugated plate of the present invention;
fig. 5 is a structural view of the track plate of the present invention;
fig. 6 is a schematic connection diagram of the track slab of the present invention.
Detailed Description
The features of the present invention and other related features are described in further detail below by way of example in conjunction with the accompanying drawings to facilitate understanding by those skilled in the art:
as shown in fig. 1-6, reference numerals 1-25 in the drawings respectively denote a lower step supporting upright 1, a middle step supporting upright 2, an upright roller 3, a track plate 4, a supporting top arch bar 5, a supporting cross beam 6, a guy cable 7, a sloping lever arm 8, a turntable 9, a guide rod 10, a contact 11, a limiting ring 12, a limiting hook 13, an upper step corrugated plate 14, a suspension supporting plate 15, a connecting rod 16, a bite plate 17, a connecting hole 18, a notch 19, a clamping plate 20, a clamping groove 21, a limiting rod 22, a limiting groove 23, a limiting plate 24 and a rotating shaft 25.
The embodiment is as follows: as shown in fig. 1 to 4, the present embodiment relates to a temporary support structure for a corrugated plate of a traveling tunnel, where the support structure is installed on a track plate 4, the track plate 4 includes a first track plate and a second track plate, the first track plate is installed on a base of a middle step, and the second track plate is installed on a base of a lower step or a tunnel bottom plate. The supporting structure comprises supporting top arch rods 5, middle step supporting upright columns 2, lower step supporting upright columns 1, supporting cross beams 6 and contact bodies 11, the supporting top arch rods 5 are transversely arranged and are arranged three along longitudinal intervals, the ends of the supporting top arch rods 5 at the middle part and the supporting top arch rods 5 at the rear part are respectively connected with the middle step supporting upright columns 2 and the lower step supporting upright columns 1, the lower step supporting upright columns 2 are supported on the second track plate through upright column idler wheels 3 at the bottoms of the lower step supporting upright columns 2, the middle step supporting upright columns 1 are supported on the first track plate through upright column idler wheels 3 at the bottoms of the middle step supporting upright columns 1, and the lower step supporting upright columns 1 and the middle step supporting upright columns 2 can move along the length directions of the corresponding track plates 4. The supporting top arch rods 5 are connected through supporting beams 6, a plurality of contact bodies 11 are arranged on the supporting beams 6 at intervals along the length direction of the supporting beams, and the contact bodies 11 are connected with arch feet of upper step corrugated plates 14 through suspension support bodies.
As shown in fig. 1 and 2, the contact body 11 is located the outside of supporting beam 6, the contact body 11 includes a guide arm 10, a carousel 9, two sloping pole arms 8, a spacing ring 12, a spacing hook 13, the one end of two sloping pole arms 8 all is connected with supporting beam 6, the other end is connected with guide arm 10 both ends respectively, guide arm 10 is vertical setting, guide arm 10 both ends all are provided with the dog, carousel 9 threaded connection is on guide arm 10 and carousel 9 can remove through rotating along guide arm 10 length direction, carousel 9 upper surface is the rough surface, the suspension is lifted to carousel 9 upper surface, through adjusting the height of carousel 9 on guide arm 10, in order to support the suspension of lifting not co-altitude. The limiting ring 12 is sleeved on the guide rod 10, the limiting ring 12 can move along the length direction of the guide rod 10, the limiting hook 13 is hinged with the limiting ring 12, and the suspension body is hooked through the hook of the limiting hook 13 so as to limit the suspension body to move away from the rotary table 9.
As shown in fig. 3, the suspension support body includes a suspension support plate 15, a connecting rod 16, and a bite plate 17, two ends of the connecting rod 16 are respectively fixedly connected to the suspension support plate 15 and the bite plate 17, and the bite plate 17 is provided with a connecting hole 18 (in this embodiment, a bolt hole or a riveting hole); the lower surface of the suspension support plate 15 is a rough surface, and the suspension support body is supported on the contact body 11 through the close occlusion of the lower surface of the suspension support plate 15 and the upper surface of the rotary table 9, and the support load can be uniformly distributed on the support beam 6; the suspension support is connected to the arch of the upper step corrugated plate 14 by installing corresponding connecting members (bolts or rivets in this embodiment) in the connecting holes 18. Because the length of limit hook 13 suits with the width of hanging plate 15, after carousel 9 and hanging plate 15 in close contact with the interlock, adjust the position of spacing ring 12 and limit hook 13 for the inside of hanging plate 15 is hooked in limit hook 13's crotch, is close to one side of upper step buckled plate 14, is used for the restriction to hang the motion that takes place skew carousel 9 of fagging 15.
As shown in fig. 1, the supporting crown arch bar 5 in the middle is connected with two ends of a supporting beam 6 through guys 7. The length of the inhaul cables 7 is adjustable, the external load supporting strength of the supporting cross beam 6 is enhanced, and the number of the inhaul cables 7 can be adjusted and set according to actual conditions.
As shown in fig. 1, the height of the supporting crown rods 5 is slightly lower than that of the tunnel ceiling in order to secure a sufficient construction space.
In this embodiment, there is also a track plate 4 that cooperates with the support structure. As shown in fig. 5 and 6, the top of the track plate 4 is provided with a notch 19, two ends of the track plate 4 are respectively provided with a clamping plate 20 and a clamping groove 21 matched with the clamping plate 20, two ends of the side part of the track plate 4 are respectively provided with a limiting rod 22 and a reversible limiting plate 24, the limiting plate 24 is connected with the track plate 4 through a rotating shaft 25, and the top of the limiting plate 24 is provided with a limiting groove 23 matched with the limiting rod 22; the track plate 4 is lengthened by inserting the clamping plate 20 on one track plate 4 into the clamping groove 21 on the other track plate 4; the limiting groove 23 on the limiting plate 24 is opened downwards by turning the limiting plate 24 on one track plate 4, and the limiting groove 23 is matched with the limiting rod 22 on the other track plate 4 to fix the track plate 4.
As shown in fig. 1 to 6, the present embodiment also has the following construction method:
1. as shown in fig. 4, the suspension body is previously connected to a fixed position at the arch of the upper step corrugated plate 14 while the upper step excavation construction of the tunnel is performed. After the construction of the upper step is completed, the upper step corrugated plate 14 is installed at a fixed position.
2. As shown in fig. 1, a track plate 4 is laid and a support structure is installed on the track plate 4.
3. Pushing the support structure to move to the proper position and connecting the contact body 11 and the suspension body together to support the arch of the upper step corrugated plate 14. The length of the track slab 4 can be adjusted according to the length of the excavation step in the construction, the length of the track slab 4 is smaller than the length of the step, and when the supporting structure is moved forwards, the track slab 4 which is moved to pass through at the rear side is repeatedly moved forwards to the front of the upright post roller 3 to be used for paving the front track slab 4.
Wherein, the section of encorbelmenting of supporting beam is used for supporting the arch springing department of last step buckled plate and (or) in the part step buckled plate with the same level department of last step buckled plate arch springing department the body of encorbelmenting of body department, the section of encorbelmenting of supporting beam except that is used for supporting in step buckled plate and (or) lower step buckled plate with the same level department of the body of encorbelmenting of last step buckled plate department of body department of, with the atress balance that satisfies well step support post both sides supporting beam as far as possible.
In addition, the height of the lower step supporting upright 1 is adjusted to be the same as that of the middle step supporting upright 2, and the method can also be suitable for temporary support of a tunnel excavation supporting structure of a two-step method.
The embodiment also has the following beneficial effects: simple structure has realized the support to the hunch foot department of upper step buckled plate.
Although the conception and the embodiments of the present invention have been described in detail with reference to the drawings, those skilled in the art will recognize that various changes and modifications can be made therein without departing from the scope of the appended claims, and therefore, the description thereof is not repeated herein.
Claims (5)
1. The utility model provides a travelling tunnel is a corrugated plate temporary support structure just, its characterized in that: the supporting structure is arranged on a track slab, the track slab comprises a first track slab and a second track slab, the first track slab is arranged on a base of the middle step, and the second track slab is arranged on a base of the lower step or a tunnel bottom plate;
the supporting structure comprises three supporting top arch rods, a middle step supporting upright post, a lower step supporting upright post, supporting cross beams and a contact body, the supporting top arch rods are transversely arranged and are longitudinally arranged at intervals, the end parts of the supporting top arch rods positioned in the middle and the supporting top arch rods positioned at the rear are respectively connected with the middle step supporting upright post and the lower step supporting upright post, the lower step supporting upright post can be slidably mounted on the second track plate through an upright roller at the bottom of the lower step supporting upright post, and the middle step supporting upright post can be slidably mounted on the first track plate through an upright roller at the bottom of the middle step supporting upright post; support and pass through between the top arch bar supporting beam connects just supporting beam follows its length direction upward the interval and is provided with a plurality ofly touch the body, touch the body and connect through the arch springing department of the suspension body with the upper stairs buckled plate.
2. A temporary supporting structure of corrugated plates initially supported in a traveling tunnel according to claim 1, characterized in that: the contact body is positioned on the outer side of the supporting cross beam and comprises a guide rod, a rotary table, two oblique rod arms, a limiting ring and a limiting hook, one end of each of the two oblique rod arms is connected with the supporting cross beam, the other end of each of the two oblique rod arms is connected with the two ends of the guide rod, the guide rods are vertically arranged, the two ends of each guide rod are provided with a stop block, the rotary table is in threaded connection with the guide rods, the rotary table can move along the length direction of the guide rods through rotation, the upper surface of the rotary table is a rough surface, the upper surface of the rotary table supports the suspension bodies, and the suspension bodies with different heights are supported through adjusting the heights of the rotary table on the guide rods; the limiting ring is sleeved on the guide rod and can move along the length direction of the guide rod, the limiting hook is hinged with the limiting ring, and the suspension support body is hooked through the hook of the limiting hook so as to limit the suspension support body to deviate from the rotary table.
3. A traveling tunnel primary corrugated plate temporary support structure according to claim 2, wherein: the suspension support body comprises a suspension support plate, a connecting rod and an engagement plate, two ends of the connecting rod are respectively fixedly connected to the suspension support plate and the engagement plate, and a connecting hole is formed in the engagement plate; the lower surface of the suspension support plate is a rough surface, and the suspension support body is connected with the contact body through the close contact occlusion of the lower surface of the suspension support plate and the upper surface of the rotary table; the suspension support body is connected with the arch feet of the upper step corrugated plate by installing corresponding connecting pieces in the connecting holes; hook through the crotch department of spacing hook hang being close to of fagging go up one side of step buckled plate, in order to restrict the board that hangs takes place to deviate the motion of carousel.
4. A temporary supporting structure of corrugated plates initially supported in a traveling tunnel according to claim 1, characterized in that: the supporting top arch bar in the middle is connected with the supporting cross beams in the front and the rear through a plurality of inhaul cables.
5. A traveling tunnel primary corrugated plate temporary support structure according to claim 1, wherein: the height of the supporting arch rods is lower than that of the tunnel top plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222273544.8U CN218150972U (en) | 2022-08-29 | 2022-08-29 | Temporary supporting structure for advanced tunnel primary corrugated plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222273544.8U CN218150972U (en) | 2022-08-29 | 2022-08-29 | Temporary supporting structure for advanced tunnel primary corrugated plate |
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| Publication Number | Publication Date |
|---|---|
| CN218150972U true CN218150972U (en) | 2022-12-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222273544.8U Active CN218150972U (en) | 2022-08-29 | 2022-08-29 | Temporary supporting structure for advanced tunnel primary corrugated plate |
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| Country | Link |
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| CN (1) | CN218150972U (en) |
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- 2022-08-29 CN CN202222273544.8U patent/CN218150972U/en active Active
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