CN217460150U - Shield tunnel and prefabricated lane plate structure thereof - Google Patents

Abstract

The utility model provides a shield tunnel and prefabricated lane board structure thereof, including the shield structure section of jurisdiction, supporting component and horizontal road plate, supporting component includes the flank component of middle part box culvert and two both sides of locating the middle part box culvert relatively, the bottom of middle part box culvert is fixed in the middle part of the internal surface of shield structure section of jurisdiction, and extend the setting along the extending direction of shield structure section of jurisdiction, the flank component includes supporting baseplate and horizontal supporting roof, supporting baseplate and shield structure section of jurisdiction fixed connection, the horizontal supporting roof is including the link and the suspension end of relative setting, the top fixed connection of link and middle part box culvert, suspension end and supporting baseplate fixed connection, the top surface of horizontal supporting roof and the top surface of middle part box culvert are in same horizontal plane, the top of horizontal supporting roof and middle part box culvert is laid to horizontal road plate. The utility model provides a but prefabricated lane plate structure rapid Assembly to drop into temporary use so that follow-up continuous construction, its efficiency of construction is high, and the construction wholeness is better is assembled to the piecemeal.

Description

Shield tunnel and prefabricated lane plate structure thereof

Technical Field

The utility model relates to a shield tunnel technical field especially relates to a shield tunnel and prefabricated lane plate structure thereof.

Background

With the development of shield tunneling machine technology and the increasing improvement of construction technology in China, shield tunnels have become the most common tunnel form for subways, railways, highways and municipal roads in China, and the prefabrication of the internal structure of the tunnel has also become a great trend for shield tunnel construction.

The shield tunnel has narrow inner space, and large mechanical equipment is difficult to enter, so that the construction difficulty of the prefabricated lane plates in the shield tunnel is high. The current tunnel plate substructure of the shield tunnel is generally composed of a middle box culvert shaped like a Chinese character 'kou' and arc-shaped plates on two sides, the current tunnel plate is generally constructed by combining a cast-in-place mode and a prefabrication mode, wherein the box culvert shaped like the Chinese character 'kou' is manufactured in the prefabrication mode, the arc-shaped plates adopt the cast-in-place mode to carry out formwork erection and reinforcing steel bar binding in the construction process, the operation space is narrow and small, the labor cost is high, the subsequent construction needs to be carried out after the cast-in-place completion of the substructure of the tunnel plate, the construction process is complex, the construction speed is slow, the on-site construction precision quality cannot be guaranteed, and the construction period is long.

In view of the above, there is a need for a shield tunnel and a prefabricated roadway panel structure thereof that solves or at least alleviates the above-mentioned drawbacks.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a prefabricated lane plate structure for shield tunnel to there is the construction process complicacy in solving prior art lane plate structure, construction speed is slow and lead to the long problem of construction period.

In order to achieve the purpose, the utility model provides a prefabricated roadway plate structure for a shield tunnel, which comprises a shield segment, a support component and a horizontal pavement plate, wherein the support component and the horizontal pavement plate are both arranged at the inner side of the shield segment, the support component is fixedly connected with the inner surface of the shield segment, and the horizontal pavement plate is laid at the top of the support component; wherein, the first and the second end of the pipe are connected with each other,

the supporting component comprises a middle box culvert and two wing components which are oppositely arranged on two sides of the middle box culvert; the bottom of the middle box culvert is fixed in the middle of the inner surface of the shield segment and extends along the longitudinal direction of the tunnel;

the side wing member comprises a supporting base plate and a horizontal supporting top plate; the supporting base plate is fixedly connected with the shield segment, the horizontal supporting top plate comprises a connecting end and a suspension end which are oppositely arranged, the connecting end is fixedly connected with the top of the middle box culvert, the suspension end is fixedly connected with the supporting base plate, and the top surface of the horizontal supporting top plate and the top surface of the middle box culvert are positioned on the same horizontal plane;

the horizontal road slab is laid on the horizontal supporting top plate and the top of the middle box culvert.

Preferably, the shield segment comprises a segment body and a prefabricated cushion layer, wherein the inner surface of the segment body, the side wall of the middle box culvert and the bottommost end of the support substrate jointly surround to form the prefabricated cushion layer filling area, and the support substrate is fixed to the top of the prefabricated cushion layer.

Preferably, the support substrate includes first support substrate and second support substrate, the top surface of prefabricated bed course is the horizontal plane, first support substrate is fixed in the top surface of prefabricated bed course, second support substrate includes relative first end and the second end that sets up, the first end of second support substrate with horizontal support roof fixed connection, the second end of second support substrate with first support substrate fixed connection.

Preferably, a plurality of vertical bolt holes are formed in one end, close to the middle box culvert, of the first support base plate, the vertical bolt holes are distributed at intervals along the longitudinal direction of the tunnel, vertical threaded pins which are correspondingly arranged with the vertical bolt holes are pre-buried in the prefabricated cushion layer, and the first support base plate penetrates through the vertical bolt holes through bolts and extends into the vertical threaded pins to be connected with the prefabricated cushion layer.

Preferably, the connecting end of the horizontal supporting roof is downwards recessed with a plurality of first grooves arranged at intervals along the longitudinal direction of the tunnel, each first groove is internally provided with a first inclined bolt hole facing the top of the middle box culvert, first inclined threaded pins arranged corresponding to the first inclined bolt holes are pre-embedded at two ends of the top of the middle box culvert, and the horizontal supporting roof penetrates through the first inclined bolt holes through bolts and extends into the first inclined threaded pins to be connected with the middle box culvert.

Preferably, the horizontal support top plate comprises a first side and a second side which are oppositely arranged along the longitudinal direction of the tunnel, the first side of the horizontal support top plate is downwards sunken to form a plurality of second grooves which are distributed at intervals along the transverse direction of the tunnel, a second inclined bolt hole which extends along the longitudinal direction of the tunnel is formed in each second groove, and a second inclined threaded pin which is correspondingly arranged with the second inclined bolt hole is pre-embedded in the second side of the horizontal support top plate.

Preferably, the top of the middle box culvert comprises a first side and a second side which are oppositely arranged along the longitudinal direction, the first side of the top of the middle box culvert is downwards sunken to form a plurality of third grooves which are arranged along the transverse interval of the tunnel, each third groove is internally provided with a third inclined bolt hole which extends along the longitudinal direction of the tunnel, and the second side of the top of the middle box culvert is pre-embedded with a third inclined threaded pin which is correspondingly arranged with the third inclined bolt hole.

Preferably, still include two and locate relatively the support bracket of middle part box culvert both sides, the protruding locating of support bracket the side of middle part box culvert, and be close to the link setting of horizontal support roof, the top surface of support bracket with predetermine the distance between the top surface of middle part box culvert, the link of horizontal support roof is fixed in on the top surface of support bracket.

Preferably, the first support base plate, the second support base plate and the horizontal support top plate surround together to form a right-angled trapezoidal side wing member with an opening facing the middle box culvert, and a grouting space is formed between the second support base plate and the inner wall of the shield segment body; and a plurality of grouting holes distributed at intervals along the longitudinal direction are formed in the second supporting substrate and close to the horizontal supporting top plate, so that grouting is performed in the grouting space to form a backfill layer.

The utility model also provides a shield tunnel, including the main hole of tunnel, still include a plurality of as above a prefabricated lane plate structure for shield tunnel, it is a plurality of prefabricated lane plate structure is followed the extending direction in the main hole of tunnel splices in proper order.

Compared with the prior art, the utility model provides a have following beneficial effect:

the utility model provides a prefabricated lane plate structure for shield tunnel, middle part box culvert is prefabricated component with the flank component, the bottom of middle part box culvert is fixed in the middle part of the internal surface of shield section of jurisdiction, flank component and middle part box culvert fixed connection, horizontal pavement board lays in the top of middle part box culvert and flank component, it all can be the construction of changing fast, middle part box culvert to the middle part of section of jurisdiction body through preferred installation, then lay prefabricated bed course to predetermineeing horizontal elevation and pre-buried vertical thread round pin, settle the flank component of both sides on prefabricated bed course afterwards, and be connected flank component and prefabricated bed course through the bolt, also carry out bolted connection through pre-buried bolt round pin between the top of middle part box culvert and the horizontal supporting roof of flank component, and convenient assembling. After the prefabricated cushion layer construction is completed, the side wing components can be quickly assembled and put into temporary use so as to facilitate subsequent continuous construction, and the problems that the existing arc-shaped structure is complex in cast-in-place construction process, cannot guarantee the on-site construction precision and quality, is low in construction efficiency, is poor in block assembly construction integrity and the like are solved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention;

fig. 2 is a schematic structural view of a wing member according to an embodiment of the present invention;

FIG. 3 is a schematic plan view of the structure of a wing member according to an embodiment of the present invention;

figure 4 is a schematic structural plan view of a middle box culvert in one embodiment of the present invention;

figure 5 is a schematic view of the junction of the wing member and the middle box culvert in one embodiment of the present invention;

fig. 6 is a schematic structural diagram of a second supporting substrate according to an embodiment of the present invention.

The purpose of the present invention is to provide a portable electronic device, which can be easily and conveniently operated.

The reference numbers illustrate:

10. a shield segment; 110. a segment body; 120. prefabricating a cushion layer; 121. a vertical threaded pin; 130. a backfill layer; 20. a support assembly; 210. a middle box culvert; 211. supporting a bracket; 212. a first angled threaded pin; 213. a third inclined bolt hole; 214. a third slanted threaded pin; 220. a wing member; 221. a horizontal supporting top plate; 2211. a first inclined bolt hole; 2212. a second inclined bolt hole; 2213. a second angled threaded pin; 222. a first support substrate; 2221. a vertical bolt hole; 223. a second support substrate; 2231. grouting holes; 30. a horizontal road plate.

Detailed Description

It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a prefabricated roadway plate structure for shield tunnel in an embodiment, including a shield segment 10, a supporting component 20 and a horizontal pavement plate 30, the supporting component 20 and the horizontal pavement plate 30 are all disposed on the inner side of the shield segment 10, the supporting component 20 is connected to the inner surface of the shield segment 10, and the horizontal pavement plate 30 is disposed on the top of the supporting component 20. First, the longitudinal direction of the tunnel referred to in the present application refers to the extending direction of the tunnel, and the transverse direction of the tunnel is perpendicular to the longitudinal direction of the tunnel. Secondly, the skilled in the art needs to understand that, unlike the prior art, the lane plate is generally composed of a box culvert shaped like a Chinese character 'kou' and arc plates on two sides, and the cast-in-place construction process of the arc structure is complex, so that the problems of incapability of guaranteeing the precision and quality of the in-place construction, low construction efficiency, poor integrity of the block splicing construction and the like exist. This application is through setting up a prefabricated lane plate structure for shield tunnel, can effectively solve prior art's above-mentioned defect, specifically as follows:

the support assembly 20 comprises a middle box culvert 210 and two wing members 220 oppositely arranged on two sides of the middle box culvert 210; the bottom of the middle box culvert 210 is fixed to the middle of the inner surface of the shield segment 10 and extends in the longitudinal direction of the tunnel.

Specifically, the support assembly 20 is configured to support the horizontal road slab 30, the support assembly 20 includes a middle box culvert 210 and two side wing members 220 oppositely disposed at two sides of the middle box culvert 210, the middle box culvert 210 and the side wing members 220 are both prefabricated first and then installed, after the middle box culvert 210 is prefabricated in advance, the middle box culvert is installed to the middle portion of the inner surface of the shield segment 10 in a hoisting manner, it is worth explaining that the bottom surface of the middle box culvert 210 may be one of other shapes such as horizontal shape and arc shape, if the middle box culvert is horizontal, a cushion layer needs to be laid between the bottom surface and the inner surface of the shield segment 10, considering construction convenience, the bottom surface of the middle box culvert 210 is circular arc shape as a preferred embodiment in the present application, and the curvature of the bottom surface of the middle box culvert 210 and the middle portion of the inner surface of the shield segment 10 is the same, can make the bottom surface of middle part box culvert 210 with the shield constructs the internal surface of section of jurisdiction 10 and corresponds to set up the installation more convenient, the bottom need not lay the bed course, can directly with the internal surface laminating setting of shield constructs section of jurisdiction 10, and the skilled person in the art can set for according to concrete need.

The wing member 220 includes a support base plate (not shown) and a horizontal support top plate 221; the supporting base plate is fixedly connected with the shield segment 10, the horizontal supporting roof 221 includes a connecting end (not shown in the figure) and a suspension end (not shown in the figure) which are oppositely arranged, the connecting end is fixedly connected with the top of the middle box culvert 210, the suspension end is fixedly connected with the supporting base plate, and the top surface of the horizontal supporting roof 221 and the top surface of the middle box culvert 210 are in the same horizontal plane; the horizontal road plate 30 is laid on the top of the horizontal supporting roof 221 and the middle box culvert 210.

In detail, the horizontal supporting roof 221 includes a connecting end and a suspending end which are oppositely arranged, the connecting end is used for connecting the wing member 220 with the middle box culvert 210, the suspending end is arranged near one side of the shield segment 10, the horizontal supporting roof 221 and the supporting base plate can be integrally formed, bolted or welded with embedded steel bars, and considering that the whole wing member 220 is a prefabricated structure, the horizontal supporting roof 221 and the supporting base plate are integrally formed by prefabrication, the top surface of the horizontal supporting roof 221 and the top surface of the middle box culvert 210 are in the same horizontal plane so that the horizontal road deck 30 can be flatly laid, and the load borne by the horizontal road deck can be uniformly transferred to the wing member 220 and the middle box culvert 210.

Furthermore, the supporting substrate can be arc-shaped, which is a common means in the prior art, and the construction difficulty is high; the supporting base plate and the horizontal supporting top plate 221 can be inclined to form a right-angled triangle shape with an opening facing the middle box culvert 210, so that the problems that the gap between the supporting base plate and the shield segment 10 is large, the space required for subsequent construction and backfilling is large, and the structural bearing strength is general are caused; therefore, as a preferred embodiment, the supporting base plate is bent and forms a right trapezoid shape with the horizontal supporting top plate 221, which greatly utilizes the inner wall space of the shield segment 10, thereby providing sufficient structural strength and reducing the construction of the backfill layer 130, and those skilled in the art can determine the situation.

In addition, every middle part box culvert 210 spanes two shield constructs section of jurisdiction 10, half length of middle part box culvert 210 sets up in one in the shield constructs section of jurisdiction 10, the length of flank component 220 with middle part box culvert 210 corresponds the setting, so set up can improve the precision when the construction greatly, improve whole prefabricated lane board with the wholeness of installation between the shield constructs section of jurisdiction 10, and simple to operate.

As a preferred embodiment of the present invention, the shield segment 10 includes a segment body 110 and a prefabricated cushion layer 120, wherein, the inner surface of the segment body 110, the side wall of the middle box culvert 210 and the bottom end of the supporting substrate jointly surround and form the prefabricated cushion layer 120 filling area, the supporting substrate is fixed on the top of the prefabricated cushion layer 120. It should be noted that, when the construction, the inner wall of section of jurisdiction body 110 with apply between middle part box culvert 210 prefabricated bed course 120, and the flattening prefabricated bed course 120 reaches horizontal design elevation, can greatly improve the precision of follow-up installation with same horizontal design elevation as the benchmark, prefabricated bed course 120 adopts concrete structure, can also be other materials such as grit, slag or soil layer, considers needs certain support strength, and more preferably, adopts concrete to form the rigid cushion course, and technical personnel in the art can set for according to particular case.

As a preferred embodiment of the present invention, the supporting substrate includes a first supporting substrate 222 and a second supporting substrate 223, the top surface of the prefabricated cushion layer 120 is a horizontal plane, the first supporting substrate 222 is fixed on the top surface of the prefabricated cushion layer 120, the second supporting substrate 223 includes a first end (not shown) and a second end (not shown) which are arranged relatively, the first end of the second supporting substrate 223 is fixedly connected to the horizontal supporting top plate 221, and the second end of the second supporting substrate 223 is fixedly connected to the first supporting substrate 222. It is worth noting that the top surface of the prefabricated cushion layer 120 is kept horizontal so as to improve the precision of subsequent construction, the connection mode between the first support substrate 222 and the prefabricated cushion layer 120 can be that the vertical threaded pin 121 is embedded while the prefabricated cushion layer 120 is completed so as to be used for the first support substrate 222 and the prefabricated cushion layer 120 to be directly connected through bolt fastening, the prefabricated cushion layer has the advantages of being convenient and fast to construct, and can also be other connection modes such as welding of embedded steel plate pieces, but the construction process is more complicated than bolt connection, and technical personnel in the field can set the connection mode according to specific needs. The second supporting base plate 223 is connected between the first supporting base plate 222 and the horizontal supporting top plate 221, and considering that the whole structure of the side wing member 220 is prefabricated, preferably, the first supporting base plate 222, the second supporting base plate 223 and the horizontal supporting top plate 221 are integrally formed in a prefabricated manner, and may also be other connecting manners such as bolt connection, embedded steel bar welding and the like, and those skilled in the art can set the connecting manners according to specific needs.

As an embodiment of the present invention, the first supporting substrate 222 is close to the one end of the middle box culvert 210 has been seted up a plurality of vertical bolt holes 2221, and is a plurality of the vertical bolt holes 2221 are laid along the longitudinal separation in the tunnel, pre-buried in the prefabricated bed course 120 have with the vertical thread pin 121 that the vertical bolt hole 2221 corresponds the setting, the first supporting substrate 222 runs through the bolt the vertical bolt hole 2221 and stretch into to in the vertical thread pin 121 with the prefabricated bed course 120 is connected. It should be noted that the vertical threaded pins 121 have positioning and connecting functions, the vertical threaded pins 121 are pre-embedded while the prefabricated cushion layer 120 is applied, the number of the vertical threaded pins 121 is multiple and is arranged at intervals along the longitudinal direction, the greater the number of the vertical threaded pins is, the more the first support substrate 222 and the prefabricated cushion layer 120 are connected, and in consideration of cost and construction convenience, the specific number of the vertical threaded pins can be set by a person skilled in the art according to the specific length of the first support substrate 222 extending along the longitudinal direction.

As a preferred embodiment of the present invention, the connecting end of the horizontal supporting roof 221 is recessed downwards to form a plurality of first grooves (not shown) arranged along the longitudinal direction of the tunnel, each of which is toward the first groove in the first inclined bolt hole 2211 of the middle box culvert 210, the first inclined threaded pin 212 corresponding to the first inclined bolt hole 2211 is embedded in the two ends of the top of the middle box culvert 210, the horizontal supporting roof 221 runs through the bolt through the first inclined bolt hole 2211 and extends into the first inclined threaded pin 212 and the middle box culvert 210 is connected. It should be noted that the first groove is wedge-shaped, the first groove is used for allowing a bolt to pass through and preventing the bolt from being exposed to affect the installation of the horizontal road plate 30, the first inclined threaded pin 212 is used for connecting the middle box culvert 210 and the wing member 220, a first inclined bolt hole 2211 corresponding to the first inclined threaded pin 212 is formed in the horizontal supporting top plate 221 of the wing member 220, and it should be noted that the corresponding arrangement here means that the first inclined threaded pin 212 and the first inclined bolt hole 2211 are coaxially arranged. The horizontal supporting top plate 221 and the middle box culvert 210 can be connected through embedded steel bars or welded through embedded parts, and other connection modes can be adopted, so that the construction is convenient, preferably, a bolt connection mode is adopted, and the technical personnel in the field can set the connection modes according to specific needs.

As a preferred embodiment of the present invention, the horizontal supporting roof 221 includes a first side (not shown) and a second side (not shown) which are disposed along the longitudinal direction of the tunnel, the first side of the horizontal supporting roof 221 is recessed downwards to form a plurality of second grooves (not shown) disposed along the transverse interval of the tunnel, each of the second grooves is formed with a second inclined bolt hole 2212 extending along the longitudinal direction of the tunnel, and the second side of the horizontal supporting roof 221 is embedded with a second inclined threaded pin 2213 disposed corresponding to the second inclined bolt hole 2212. It should be noted that the first end and the second end of the horizontal supporting top plate 221 are two ends oppositely arranged along the extending direction of the tunnel, and are similar to the first groove, the second groove is also used for penetrating bolts and preventing the bolts from being exposed, so as to affect the installation of the horizontal road plate 30, the second inclined threaded pin 2213 is used for splicing every two adjacent side wing members 220 along the extending direction of the tunnel, and is similar to the first inclined threaded pin 212, where the corresponding arrangement is that the second inclined threaded pin 2213 and the second inclined threaded pin 2212 are coaxially arranged, the side wing members 220 can be connected by embedded steel bars or welded by embedded parts, and other connection modes such as welding are adopted between the embedded parts, so that the construction connection after prefabrication is more convenient, and preferably, the side wing members are connected by bolts.

As a preferred embodiment of the present invention, the top of the middle box culvert 210 includes a first side (not shown) and a second side (not shown) which are arranged along the longitudinal direction, the first side of the top of the middle box culvert 210 is recessed downwards to form a plurality of third grooves (not shown) which are arranged along the transverse interval of the tunnel, each of the third grooves is provided with a third inclined bolt hole 213 which is longitudinally extended along the tunnel, and the second side of the top of the middle box culvert 210 is embedded with a third inclined threaded pin 214 which is arranged corresponding to the third inclined bolt hole 213. It is understood that the third grooves are also used for bolts to pass through and prevent the bolts from being exposed to affect the installation of the horizontal road plate 30, the third inclined threaded pins 214 are used for splicing between every two adjacent middle boxes 210 along the extending direction of the tunnel, the arrangement and connection means are the same as the first inclined threaded pins 212 and the second inclined threaded pins 2213, the number of the first inclined threaded pins 212 is determined according to the longitudinal length of the horizontal supporting roof plate 221 and the middle boxes 210, the number of the second inclined threaded pins 2213 is determined according to the transverse length of the horizontal tunnel of the horizontal supporting roof plate 221, the number of the third inclined threaded pins 214 is determined according to the transverse length of the horizontal tunnel at the top of the middle boxes 210, and the skilled person can set the number according to the specific situation.

As a preferred embodiment of the utility model, still include that two locate relatively the support bracket 211 of middle part box culvert 210 both sides, support bracket 211 is protruding to be located the side of middle part box culvert 210, and close to the link setting of horizontal support roof 221, support bracket 211 the top surface with predetermine the distance between the top surface of middle part box culvert 210, the link of horizontal support roof 221 is fixed in on the top surface of support bracket 211. It should be noted that the support bracket 211 is used for supporting the wing member 220, bearing the load above, and transmitting the stress dispersion above to the substructure, so that the support bracket is disposed at a position close to the top of the middle box culvert 210 to relieve the bearing pressure at the top of the middle box culvert 210, and the support bracket 211 and the middle box culvert 210 may be connected by prefabricating, bolting, or welding with embedded steel plates, and preferably, the support bracket 211 and the middle box culvert 210 are integrally formed by prefabricating.

Further, the first support base plate 222, the second support base plate 223 and the horizontal support top plate 221 jointly enclose to form a right-angled trapezoidal wing member 220 with an opening facing the middle box culvert 210, and a grouting space is formed between the second support base plate 223 and the inner wall of the shield segment 10 body; a plurality of grouting holes 2231 arranged at intervals along the longitudinal direction are formed on the second support substrate 223 near the horizontal support top plate 221, so as to form a backfill layer 130 by grouting into the grouting space. It should be noted that the wing member 220 is in a right trapezoid shape, so that the wing member 220 can be filled in the inner wall of the segment body 110 to a greater extent, and thus only a small-area grouting space is formed, and then grouting is performed through the grouting hole 2231 to form the backfill layer 130, so that the space between the wing member 220 and the segment body 110 is densely filled, and the vehicle load borne by the structure can be reasonably transmitted to the segment body 110.

The utility model also provides a shield tunnel, including the main hole in tunnel, still include a plurality of as above a prefabricated lane plate structure for shield tunnel, it is a plurality of prefabricated lane plate structure is followed the extending direction in the main hole in tunnel splices in proper order. So form holistic prefabricated lane plate structure, its rapid Assembly and drop into temporary use after its prefabrication to subsequent continuous construction has been solved current arc structure cast in situ construction technology complicacy, and the site operation precision quality can't be ensured, the efficiency of construction is low and the relatively poor scheduling problem of construction wholeness is assembled in the piecemeal.

The construction process comprises the following steps: when a person skilled in the art excavates a tunnel, the shield machine is firstly adopted to push duct pieces for splicing, and the specific implementation means of the shield machine is well known by the person skilled in the art and is not described in detail herein; when the prefabricated lane plate structure is installed, the middle box culvert 210 is installed firstly, the prefabricated middle box culvert 210 is arranged in the middle of the segment body 110 in a hoisting mode, a cushion layer is applied between the bottom of the middle box culvert 210 and the segment body 110 after the installation is finished, the cushion layer is applied to a horizontal design elevation, and meanwhile, the vertical threaded pin 121 is embedded in the cushion layer; then, mounting prefabricated wing members 220 on two sides, arranging the wing members 220 on the cushion layer, and penetrating the wing members 220 into corresponding vertical threaded pins 121 by using bolts to firmly connect the wing members 220 on the two sides with the bottom prefabricated cushion layer 120; because the first inclined threaded pins 212 are pre-embedded on the two sides of the top of the middle box culvert 210 when the middle box culvert 210 is prefabricated, after the bottom is fixedly connected, the bolts can penetrate into the corresponding first inclined threaded pins 212 to fixedly connect the wing members 220 on the two sides with the middle box culvert 210, so that the wing members 220 are fixed; after the side wing member 220 is fixed, grouting is performed on a gap between the side wing member 220 and the segment body 110 through a grouting hole 2231 reserved on the second support base plate 223, and the backfill layer 130 is formed by filling and vibrating, so that installation of a transverse section of a tunnel is completed; and then, the above steps are repeated, and bolts penetrate into the corresponding second inclined threaded pins 2213 and the third inclined threaded pins 214 to complete longitudinal splicing, and finally, the horizontal road slab 30 is laid in the longitudinal direction, so that an integral prefabricated lane slab structure is finally formed.

The above is only the preferred embodiment of the present invention, and not the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings or the direct or indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims (10)

1. A prefabricated roadway plate structure for a shield tunnel is characterized by comprising shield segments, a supporting assembly and a horizontal pavement plate, wherein the supporting assembly and the horizontal pavement plate are arranged on the inner sides of the shield segments, the supporting assembly is fixedly connected with the inner surfaces of the shield segments, and the horizontal pavement plate is laid on the tops of the supporting assembly; wherein the content of the first and second substances,

the supporting component comprises a middle box culvert and two wing components which are oppositely arranged on two sides of the middle box culvert; the bottom of the middle box culvert is fixed in the middle of the inner surface of the shield segment and extends along the longitudinal direction of the tunnel;

the side wing member comprises a supporting base plate and a horizontal supporting top plate; the supporting base plate is fixedly connected with the shield segment, the horizontal supporting top plate comprises a connecting end and a suspension end which are oppositely arranged, the connecting end is fixedly connected with the top of the middle box culvert, the suspension end is fixedly connected with the supporting base plate, and the top surface of the horizontal supporting top plate and the top surface of the middle box culvert are positioned on the same horizontal plane;

the horizontal road slab is laid on the horizontal supporting top plate and the top of the middle box culvert.

2. The prefabricated roadway plate structure for the shield tunnel according to claim 1, wherein the shield segment comprises a segment body and a prefabricated cushion layer, wherein the inner surface of the segment body, the side wall of the middle box culvert and the bottommost end of the support substrate jointly surround to form the prefabricated cushion layer filling area, and the support substrate is fixed on the top of the prefabricated cushion layer.

3. The prefabricated roadway plate structure for the shield tunnel of claim 2, wherein the support base plate comprises a first support base plate and a second support base plate, the top surface of the prefabricated cushion layer is a horizontal plane, the first support base plate is fixed on the top surface of the prefabricated cushion layer, the second support base plate comprises a first end and a second end which are oppositely arranged, the first end is fixedly connected with the horizontal support top plate, and the second end is fixedly connected with the first support base plate.

4. The prefabricated roadway plate structure for the shield tunnel according to claim 3, wherein a plurality of vertical bolt holes are formed in one end, close to the middle box culvert, of the first supporting base plate, the plurality of vertical bolt holes are arranged at intervals in the longitudinal direction of the tunnel, vertical threaded pins corresponding to the vertical bolt holes are pre-embedded in the prefabricated cushion layer, and the first supporting base plate penetrates through the vertical bolt holes through bolts and extends into the vertical threaded pins to be connected with the prefabricated cushion layer.

5. The prefabricated roadway plate structure for the shield tunnel according to claim 1, wherein a plurality of first grooves are formed at the connecting end of the horizontal supporting top plate in a downward recessed manner and are arranged at intervals in the longitudinal direction of the tunnel, a first inclined bolt hole facing the top of the middle box culvert is formed in each first groove, a first inclined threaded pin corresponding to the first inclined bolt hole is pre-embedded in the top of the middle box culvert, and the horizontal supporting top plate penetrates through the first inclined bolt hole through a bolt and extends into the first inclined threaded pin to be connected with the middle box culvert.

6. The prefabricated roadway plate structure for the shield tunnel of claim 4, wherein the horizontal supporting top plate comprises a first side and a second side which are oppositely arranged along the longitudinal direction of the tunnel, the first side of the horizontal supporting top plate is downwards recessed with a plurality of second grooves which are arranged at intervals along the transverse direction of the tunnel, each second groove is internally provided with a second inclined bolt hole which extends along the longitudinal direction of the tunnel, and the second side of the horizontal supporting top plate is pre-embedded with a second inclined threaded pin which is correspondingly arranged with the second inclined bolt hole.

7. The prefabricated roadway plate structure for the shield tunnel of claim 4, wherein the top of the middle box culvert comprises a first side and a second side which are oppositely arranged along the longitudinal direction, the first side of the top of the middle box culvert is downwards recessed with a plurality of third grooves which are arranged along the transverse direction of the tunnel at intervals, each third groove is internally provided with a third inclined bolt hole which extends along the longitudinal direction of the tunnel, and a third inclined threaded pin which is correspondingly arranged with the third inclined bolt hole is pre-buried at the second side of the top of the middle box culvert.

8. The prefabricated roadway plate structure for the shield tunnel according to claim 1, further comprising two support brackets oppositely arranged on two sides of the middle box culvert, wherein the support brackets are convexly arranged on the side surface of the middle box culvert and are arranged close to the connecting ends of the horizontal support top plates, a preset distance is reserved between the top surfaces of the support brackets and the top surface of the middle box culvert, and the connecting ends of the horizontal support top plates are fixed on the top surfaces of the support brackets.

9. The prefabricated roadway plate structure for the shield tunnel according to claim 3, wherein the first support base plate, the second support base plate and the horizontal support top plate jointly enclose to form a right-angle trapezoidal side wing member with an opening facing the middle box culvert, and a grouting space is formed between the second support base plate and the inner wall of the shield segment body; and a plurality of grouting holes distributed at intervals along the longitudinal direction are formed in the second supporting substrate and close to the horizontal supporting top plate, so that grouting is performed in the grouting space to form a backfill layer.

10. A shield tunnel comprising a main tunnel bore, and further comprising a plurality of prefabricated roadway panel structures for shield tunnels according to any one of claims 1 to 9, wherein the plurality of prefabricated roadway panel structures are sequentially spliced along the extension direction of the main tunnel bore.

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