CN218150971U - Track plate for advancing of temporary support structure of tunnel primarily-supported corrugated plate - Google Patents

Abstract

The utility model discloses a track slab for advancing a temporary support structure of a primary corrugated plate of a tunnel, wherein the top of the track slab is provided with a notch, two ends of the track slab are respectively provided with a clamping plate and a clamping groove matched with the clamping plate, two ends of the side part of the track slab are respectively provided with a limiting rod and a turnable limiting plate, and the top of the limiting plate is provided with a limiting groove matched with the limiting rod; the clamping plate on one track plate is inserted into the clamping groove on the other track plate, so that the track plates are lengthened; the opening of a limiting groove on the limiting plate faces downwards by turning over the limiting plate on one track plate, and the limiting groove is matched with a limiting rod on the other track plate to fix the track plate. The utility model has the advantages that: simple structure, can be used to the walking of bearing structure.

Description

Track plate for advancing of temporary support structure of tunnel primary corrugated plate

Technical Field

The utility model belongs to the technical field of the technique of tunnel support and specifically relates to a track board that is used for tunnel to advance just a corrugated plate temporary support structure.

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, because the influence of complex factor, the interval period often is longer with assembling of well step ripple to the buckled plate of upper step, and the hunch foot department of upper step buckled plate is in unsettled state for a long time for the upper step buckled plate takes place more obvious displacement and warp, seriously influences the effect of strutting of upper step buckled plate, and seriously influences the whole concatenation precision of buckled plate. 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 track board that is used for tunnel just to prop up interim bearing structure of buckled plate and marchs according to above-mentioned prior art not enough, it is the design of can lengthening, can be used to bearing structure's walking.

The utility model discloses the purpose is realized accomplishing by following technical scheme:

the utility model provides a track board that is used for tunnel to prop up interim bearing structure of buckled plate and marchs which characterized in that: the top of the track plate is provided with a notch, two ends of the track plate are respectively provided with a clamping plate and a clamping groove matched with the clamping plate, two ends of the side part of the track plate are respectively provided with a limiting rod and a reversible limiting plate, and the top of the limiting plate is provided with a limiting groove matched with the limiting rod; the clamping plate on one track plate is inserted into the clamping groove on the other track plate so as to lengthen the track plates; the opening of a limiting groove on the limiting plate faces downwards by turning over the limiting plate on one track plate, and the limiting groove is matched with a limiting rod on the other track plate to fix the track plate.

The limiting plate is connected with the track plate through a rotating shaft.

The shape and the size of the clamping plate are respectively matched with those of the clamping groove.

The shape, size, quantity and position of the limiting rod are respectively matched with those of the limiting groove on the limiting plate.

The shape of the notch is U-shaped.

The clamping plate and the clamping groove are both rectangular.

The number of the limiting rods on one side of the track plate and the number of the limiting grooves in the limiting plate are three.

The utility model has the advantages that: simple structure, can be used to the walking of bearing structure.

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, the marks 1-25 in the figures are respectively represented as a lower step support upright 1, a middle step support upright 2, upright rollers 3, a track plate 4, a support arch bar 5, a support cross beam 6, a guy cable 7, a diagonal lever arm 8, a turntable 9, a guide rod 10, a contact body 11, a limit ring 12, a limit hook 13, an upper step corrugated plate 14, a suspension support 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 limit rod 22, a limit groove 23, a limit plate 24 and a rotating shaft 25.

Example (b): as shown in fig. 5-6, this embodiment relates to a track slab for temporary support structure of a primary corrugated plate in a tunnel, wherein a notch 19 is formed in the top of the track slab 4, two ends of the track slab 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 of the track slab 4 are respectively provided with a limiting rod 22 and a reversible limiting plate 24, the limiting plate 24 is connected with the track slab 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.

In this embodiment, the shape of the slot 19 is U-shaped. The shape and the size of the clamping plate 20 are respectively matched with those of the clamping groove 21, and the clamping plate 20 and the clamping groove 21 are both rectangular. The shape, size, quantity and position of the limiting rod 22 are respectively matched with those of the limiting grooves 23 on the limiting plate 24, and the number of the limiting rod 22 on one side of the track plate 4 and the number of the limiting grooves 23 on the limiting plate 24 are three.

In this embodiment, a supporting structure is further provided to cooperate with the track plate 4. The support structure is mounted on the track slab 4, and the track slab 4 includes a first track slab and a second track slab, the first track slab is mounted on the base of the middle step, and the second track slab is mounted on the base of the lower step or on the tunnel bottom plate. As shown in fig. 1-4, the supporting structure includes a supporting top arch bar 5, a middle step supporting upright post 2, a lower step supporting upright post 1, a supporting beam 6 and a contact 11, the supporting top arch bar 5 is transversely arranged and is longitudinally spaced, the supporting top arch bar 5 at the middle part and the supporting top arch bar 5 at the rear part are respectively connected with the middle step supporting upright post 2 and the lower step supporting upright post 1, the lower step supporting upright post 2 is supported on the second track plate through upright rollers 3 at the bottom of the lower step supporting upright post, the middle step supporting upright post 1 is supported on the first track plate through upright rollers 3 at the bottom of the middle step supporting upright post, and the lower step supporting upright post 1 and the middle step supporting upright post 2 can move along the length direction of the corresponding track plate 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 12 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 and 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 is connected to the arch of the upper stepped corrugated plate 14 by fitting corresponding connecting members (bolts or rivets in this embodiment) into 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.

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 12 while the upper step excavation construction of the tunnel is performed. And after the construction of the upper step is finished, the upper step corrugated plate 12 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. The supporting structure is pushed to move to a proper position and the contact body 11 and the suspension body are connected together to support the arch foot of the upper step corrugated plate 12. 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, can be used to the walking of bearing structure.

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 (7)

1. The utility model provides a track board that is used for tunnel to prop up interim bearing structure of buckled plate and marchs which characterized in that: the top of the track plate is provided with a notch, two ends of the track plate are respectively provided with a clamping plate and a clamping groove matched with the clamping plate, two ends of the side part of the track plate are respectively provided with a limiting rod and a reversible limiting plate, and the top of the limiting plate is provided with a limiting groove matched with the limiting rod; the clamping plate on one track plate is inserted into the clamping groove on the other track plate so as to lengthen the track plates; the limiting groove on the limiting plate is opened downwards by turning over the limiting plate on the track plate, and the limiting groove is matched with the limiting rod on the other track plate to fix the track plate.

2. A track slab for temporary support structure of corrugated primary tunnel slab as claimed in claim 1, wherein: the limiting plate is connected with the track plate through a rotating shaft.

3. A track slab for temporary support structure of corrugated primary corrugated sheet for tunnel according to claim 1, wherein: the shape and the size of the clamping plate are respectively matched with those of the clamping groove.

4. A track slab for temporary support structure of corrugated primary tunnel slab as claimed in claim 1, wherein: the shape, size, quantity and position of the limiting rod are respectively matched with those of the limiting groove in the limiting plate.

5. A track slab for temporary support structure of corrugated primary corrugated sheet for tunnel according to claim 1, wherein: the shape of the notch is U-shaped.

6. A track slab for temporary support structure of corrugated primary corrugated sheet for tunnel according to claim 3, wherein: the clamping plate and the clamping groove are both rectangular.

7. A track plate for the temporary support structure of the corrugated primary tunnel plate according to claim 4, wherein: the number of the limiting rods on one side of the track plate and the number of the limiting grooves in the limiting plate are three.

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