A prefabricated lining device and a method for installing the same

Abstract

The application discloses a prefabricated lining device and a mounting method thereof, which comprises a plurality of lining units in circular arc structures, a connecting mechanism for connecting adjacent lining units, and a sealing unit arranged on the circumferential side of the lining unit; the lining unit comprises a plurality of lining segments in circular arc shapes, the lining segment has two symmetrically distributed longitudinal side edges and two symmetrically distributed arc edges, a longitudinal reinforcing rib is arranged on the inner side of the lining segment along the two longitudinal side edges, and an arc reinforcing rib is arranged on the inner side of the lining segment along the two arc edges, a longitudinal positioning assembly for positioning adjacent lining segments is arranged on the longitudinal reinforcing rib, and an arc positioning assembly for positioning adjacent lining segments is arranged on the arc reinforcing rib; the application can significantly improve the mounting efficiency, shorten the engineering cycle, and reduce the engineering cost.

Description

Technical Field

[0001] This invention relates to the field of tunnel lining construction technology, and in particular to a prefabricated assembled lining device and its installation method. Background Technology

[0002] In tunnel and underground engineering construction, prefabricated lining devices are widely used due to their advantages such as high construction efficiency and strong quality control. However, in actual construction, the precise positioning and firm fixing of adjacent lining segments, as well as improving the overall installation efficiency, have always been key factors restricting project progress and quality. How to effectively solve these problems has become a technical challenge that urgently needs to be overcome in the field of tunnel construction.

[0003] In the installation of prefabricated lining devices, inaccurate positioning and insecure fixing of adjacent tube sheet segments are two major problems. Inaccurate positioning leads to uneven gaps between tube sheets, which in turn affects the overall stability and sealing of the lining structure, increases the risk of leakage, and threatens tunnel safety. For example, although the patent application CN202411609791.8 proposes a waterproof structure for prefabricated composite lining in deep tunnels, in actual operation, if there are deviations in the positioning of adjacent tube sheet segments, the waterproof performance may still decrease. In addition, insecure fixing can cause the tube sheets to shift or loosen when subjected to external forces, further exacerbating safety hazards.

[0004] Meanwhile, low installation efficiency is also a significant factor restricting project progress. In traditional construction methods, the positioning and fixing of tunnel segments often requires a large amount of manual labor, which is not only time-consuming and labor-intensive but also prone to errors due to human factors. For example, although the patent application with application number CN202210247483.X provides a connection structure for composite tunnel lining structures, if the positioning and fixing steps are cumbersome during the segment installation process, it will still significantly reduce construction efficiency and increase project costs.

[0005] Based on this, the present invention provides a novel prefabricated assembled lining device and its installation method, effectively solving the problem of positioning and fixing adjacent lining segments and significantly improving installation efficiency. The present invention can significantly improve installation efficiency, shorten the project cycle, reduce project costs, and achieve high efficiency, precision, and safety in the construction of prefabricated assembled lining segments, providing strong support for the construction of tunnels and underground engineering projects. Summary of the Invention

[0006] The present invention aims to solve the problem that the traditional installation of lining segments in the prior art requires construction personnel to spend a lot of time on repeated adjustments and calibrations.

[0007] To address the above problems, the present invention provides a prefabricated assembled lining device, comprising:

[0008] The lining unit includes several lining segments and sealing units disposed on the circumferential side of the lining unit. The lining unit includes several lining segments and a connecting mechanism is provided between adjacent lining segments.

[0009] The lining segment has a longitudinal cross section in the shape of an arc. The lining segment has two symmetrically distributed longitudinal side edges and two symmetrically distributed arc edges. Longitudinal reinforcing ribs are provided along the two longitudinal side edges and arc reinforcing ribs are provided along the two arc edges on the inner side surface of the lining segment. Longitudinal positioning components for positioning adjacent lining segments are provided on the longitudinal reinforcing ribs, and arc positioning components for positioning adjacent lining segments are provided on the arc reinforcing ribs.

[0010] Preferably, the longitudinal positioning component includes a longitudinal positioning member fixedly connected to the side of a longitudinal reinforcing rib away from the lining segment. The longitudinal positioning member includes a longitudinal positioning strip arranged in a T shape and a longitudinal connecting block located in the middle of the longitudinal positioning strip. The longitudinal connecting block is fixedly connected to the longitudinal positioning strip and the lining segment. A first longitudinal locking strip is fixedly provided on the side of the longitudinal positioning strip close to the lining segment, and a first longitudinal locking tooth is provided on the first longitudinal locking strip.

[0011] A longitudinal connection port corresponding to the longitudinal connecting block is provided on another longitudinal reinforcing rib, and a second longitudinal locking strip corresponding to the first longitudinal locking strip is provided on the second longitudinal locking strip, and a second longitudinal locking tooth corresponding to the first longitudinal locking tooth is provided on the second longitudinal locking strip.

[0012] Preferably, a first longitudinal fixing hole is provided on each of the two longitudinal reinforcing ribs, and a second longitudinal fixing hole corresponding to the first longitudinal fixing hole is provided on the longitudinal positioning strip. The connecting mechanism includes a longitudinal connecting bolt, which sequentially connects the longitudinal reinforcing ribs of adjacent lining units and the longitudinal positioning strip of any of the lining units.

[0013] Preferably, the arc-shaped positioning component includes an arc-shaped positioning element fixedly connected to the side of an arc-shaped reinforcing rib away from the lining segment. The arc-shaped positioning element includes an arc-shaped positioning strip arranged in an arc shape and arc-shaped connecting blocks located at both ends of the arc-shaped positioning strip. The arc-shaped connecting blocks are fixedly connected to the arc-shaped positioning strip and the lining segment. A first arc-shaped locking strip is fixedly provided on the side of the arc-shaped positioning strip close to the lining segment, and a first arc-shaped locking tooth is provided on the first arc-shaped locking strip.

[0014] An arc-shaped connection port corresponding to the arc-shaped connecting block is provided on another arc-shaped reinforcing rib, and a second arc-shaped locking strip corresponding to the first arc-shaped locking strip is provided on the second arc-shaped locking strip, and a second arc-shaped locking tooth corresponding to the first arc-shaped locking tooth is provided on the second arc-shaped locking strip.

[0015] Preferably, a first arc-shaped fixing hole is provided on each of the two arc-shaped reinforcing ribs, and a second arc-shaped fixing hole corresponding to the first arc-shaped fixing hole is provided on the arc-shaped positioning strip. The connecting mechanism is set as an arc-shaped connecting bolt, which sequentially connects the arc-shaped reinforcing ribs of adjacent lining units and the arc-shaped positioning strip of any one of the lining units.

[0016] Preferably, the sealing unit includes a plurality of sealing rubber gaskets, which are disposed on the circumferential side of the corresponding lining segment.

[0017] The present invention also provides an installation method for a prefabricated lining device. Based on the above-mentioned prefabricated lining device, a lining installation trolley is used. The lining installation trolley includes a track and a trolley base slidably arranged on the track. A lining feeding device and a lining installation device are sequentially arranged on the trolley base, as well as a locking construction platform for locking the lining segments.

[0018] The lining feeding device includes a lining lifting mechanism and a lining erection device. The lining lifting mechanism includes a lifting support frame mounted on a trolley base, a lifting slide rail on the lifting support frame, a lining lifting device slidably connected to the lifting slide rail, a lining erection device and a corresponding lining transfer slide rail on one side of the lifting support frame, and a lining cabin slidably connected to the lining transfer slide rail.

[0019] The lining installation device includes two parallel circular arched slide rails and several hydraulic presses arranged in a ring along the circular arched slide rails. Between the two circular arched slide rails, there is a circular arc trolley that can slide along the circular arched slide rails. The circular arc trolley is equipped with a lining gripping mechanism and several screw jacks.

[0020] Installation methods include:

[0021] The lining installation trolley places the lining segments onto the lining erection device via the lining lifting mechanism, and then the lining erection device transports the lining segments to the lining installation device.

[0022] The lining installation device transports the lining segments to the preparatory position on the arc-shaped slide rail via an arc-shaped trolley, and then uses a hydraulic press to push and install the lining segments with the longitudinal positioning components of the longitudinally adjacent lining segments and the arc-shaped positioning components of the circumferentially adjacent lining segments for preliminary positioning.

[0023] Construction workers install connecting mechanisms on the initially positioned lining segments by locking the construction platform to connect adjacent lining units.

[0024] During the initial positioning of the lining segments by pushing and installing the longitudinal positioning components of the longitudinally adjacent lining segments and the arc-shaped positioning components of the circumferentially adjacent lining segments with the hydraulic press;

[0025] The longitudinal positioning component of the lining segment mates with the longitudinal connection port of the adjacent lining segment so that the first longitudinal locking strip and the first longitudinal locking tooth on the longitudinal positioning component mates with the second longitudinal locking strip and the second longitudinal locking tooth of the adjacent lining segment for positioning.

[0026] The arc-shaped positioning component of the lining segment mates with the arc-shaped connection port of the adjacent circumferential lining segment, so that the first arc-shaped locking strip and the first arc-shaped locking tooth on the arc-shaped positioning component mates with the second arc-shaped locking strip and the second arc-shaped locking tooth of the adjacent circumferential lining segment for positioning.

[0027] The connecting mechanism includes longitudinal connecting bolts and arc-shaped connecting bolts;

[0028] The longitudinal connecting bolt passes through the first longitudinal fixing hole of the longitudinal stiffener on the lining segment and the second longitudinal fixing hole of the longitudinal positioning member, as well as the first longitudinal fixing hole of the longitudinal stiffener of the lining segment adjacent to it, to form a fixed connection.

[0029] The arc-shaped connecting bolt passes through the first arc-shaped fixing hole of the arc-shaped reinforcing rib on the lining segment and the second arc-shaped fixing hole of the arc-shaped positioning piece, and the first arc-shaped fixing hole of the arc-shaped reinforcing rib of the adjacent lining segment to form a fixed connection.

[0030] The beneficial effects of this invention are as follows:

[0031] In this invention, the longitudinal positioning strip and the longitudinal connecting block of the longitudinal positioning component form a stable positioning frame. During the cooperation with the longitudinally adjacent lining segments, the precise alignment of the longitudinal connecting port with the longitudinal positioning component allows the second longitudinal locking strip and the second longitudinal locking tooth to precisely engage with the first longitudinal locking strip and the first longitudinal locking tooth. This effectively avoids the problem of inaccurate longitudinal positioning caused by manual operation or component size deviation in traditional installation methods, providing a highly accurate positional reference for the direct fixing of subsequent longitudinal connecting bolts, ensuring the firmness and stability of the longitudinal connection, thereby improving the integrity and deformation resistance of the entire lining structure in the longitudinal direction.

[0032] The positioning structure, consisting of an arc-shaped positioning strip and an arc-shaped connecting block, works in conjunction with the first arc-shaped locking strip and the first arc-shaped locking tooth. When interacting with adjacent circumferential lining segments, the precise fit between the arc-shaped connecting port and the arc-shaped positioning component ensures that the second arc-shaped locking strip and the second arc-shaped locking tooth perfectly align with the first arc-shaped locking strip and the first arc-shaped locking tooth. This circumferential positioning method fully considers the arc-shaped structural characteristics of the tunnel lining, accurately controlling the relative position and angle between adjacent circumferential lining segments, ensuring the accuracy and consistency of the circumferential connection, creating favorable conditions for the subsequent direct fixing of the arc-shaped connecting bolts, and effectively improving the sealing performance and structural strength of the circumferential connection.

[0033] The preliminary positioning function of the longitudinal and arc-shaped positioning components enables the lining segments to be quickly and accurately positioned in the design location during installation, greatly reducing the adjustment steps required during installation. Construction workers no longer need to perform tedious manual measurements and multiple trial installations; they only need to place and push the lining segments according to the guidance of the positioning components to achieve preliminary positioning. This significantly shortens the installation time for individual lining segments and improves overall installation efficiency.

[0034] The pre-drilled first longitudinal fixing holes and first arc-shaped fixing holes on the longitudinal and arc-shaped reinforcing ribs, along with corresponding second longitudinal fixing holes and second arc-shaped fixing holes on the longitudinal and arc-shaped positioning strips, form a complete positioning-to-fixing system. After initial positioning, construction workers can directly use longitudinal connecting bolts and arc-shaped connecting bolts through the corresponding fixing holes for fixation, without the need for additional drilling or adjustment. This achieves seamless integration of positioning and fixing, further improving installation efficiency and shortening the construction cycle. Attached Figure Description

[0035] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention.

[0036] In the attached image:

[0037] Figure 1 A schematic diagram of the installation process of a prefabricated assembled lining device;

[0038] Figure 2 This is a schematic diagram of a lining unit;

[0039] Figure 3 Schematic diagram of lining segments Figure 1 ;

[0040] Figure 4 Schematic diagram of lining segments Figure 2 ;

[0041] Figure 5 Schematic diagram of lining segments Figure 3 ;

[0042] Figure 6 A schematic diagram of the lining installation trolley.

[0043] In the diagram: 10. Lining unit; 111. Lining segment; 1111. Longitudinal side edge; 1112. Arc-shaped edge; 112. Longitudinal reinforcing rib; 1121. Longitudinal positioning component; 113. Arc-shaped reinforcing rib; 1131. Arc-shaped positioning component; 14. Longitudinal positioning element; 141. Longitudinal positioning strip; 142. Longitudinal connecting block; 143. First longitudinal locking strip; 144. First longitudinal locking tooth; 145. First longitudinal fixing hole; 146. Second longitudinal fixing hole; 15. Longitudinal connection port; 151. Second longitudinal locking strip; 152. Second longitudinal locking tooth; 18. Arc-shaped positioning element; 181. Arc-shaped positioning strip; 182. Arc-shaped connecting block; 183. First arc-shaped locking strip; 184. 185. First arc-shaped locking tooth; 186. First arc-shaped fixing hole; 19. Second arc-shaped fixing hole; 10. Arc-shaped connecting port; 191. Second arc-shaped locking strip; 192. Second arc-shaped locking tooth; 30. Lining installation trolley; 31. Track; 32. Trolley base; 321. Lining feeding device; 322. Lining installation device; 323. Locking construction platform; 33. Lining lifting mechanism; 331. Lifting support frame; 332. Lifting slide rail; 333. Lining lifting device; 34. Lining erection device; 35. Lining transfer slide rail; 36. Lining cabin; 37. Circular arc arch slide rail; 38. Hydraulic press; 39. Circular arc trolley; 391. Lining gripping mechanism; 392. Screw jack. Detailed Implementation

[0044] The technical solution of the present invention will now be described with reference to the accompanying drawings. However, the described embodiments are only some embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0045] like Figures 1 to 6 As shown, the present invention provides a prefabricated assembled lining device, comprising:

[0046] A plurality of lining units 10 with arc-shaped structures and a connecting mechanism connecting adjacent lining units 10, and a sealing unit provided on the circumferential side of the lining unit 10;

[0047] The lining unit 10 includes several arc-shaped lining segments 111. Each lining segment 111 has two symmetrically distributed longitudinal side edges 1111 and two symmetrically distributed arc-shaped edges 1112. Longitudinal reinforcing ribs 112 are respectively provided along the two longitudinal side edges 1111 on the inner surface of the lining segment 111, and arc-shaped reinforcing ribs 113 are respectively provided along the two arc-shaped edges 1112. Longitudinal positioning components 1121 for positioning adjacent lining segments 111 are provided on the longitudinal reinforcing ribs 112, and arc-shaped positioning components 1131 for positioning adjacent lining segments 111 are provided on the arc-shaped reinforcing ribs 113.

[0048] Specifically, the lining unit 10 is the basic component of the entire prefabricated lining device, consisting of several arc-shaped lining segments 111. Each lining segment 111 has two symmetrically distributed longitudinal side edges 1111 and two symmetrically distributed arc-shaped edges 1112. This structure allows the lining segment 111 to better fit the inner wall of circular structures such as tunnels.

[0049] Among them, longitudinal reinforcing ribs 112 are respectively provided along the two longitudinal side edges 1111 on the inner side surface of the lining segment 111, and arc-shaped reinforcing ribs 113 are respectively provided along the two arc-shaped edges 1112. The function of the longitudinal reinforcing ribs 112 and the arc-shaped reinforcing ribs 113 is to enhance the structural strength of the lining segment 111, improve its bending and deformation resistance, and enable it to remain stable when subjected to external pressure and load.

[0050] like Figures 2 to 5 As shown, in this embodiment, the longitudinal positioning component 1121 includes a longitudinal positioning member 14 fixedly connected to the side of a longitudinal reinforcing rib 112 away from the lining segment 111. The longitudinal positioning member 14 includes a longitudinal positioning strip 141 arranged in a T shape and a longitudinal connecting block 142 located in the middle of the longitudinal positioning strip 141. The longitudinal connecting block 142 fixedly connects the longitudinal positioning strip 141 and the lining segment 111. A first longitudinal locking strip 143 is fixedly provided on the side of the longitudinal positioning strip 141 close to the lining segment 111, and a first longitudinal locking tooth 144 is provided on the first longitudinal locking strip 143.

[0051] A longitudinal connection port 15 corresponding to the longitudinal connecting block 142 is provided on another longitudinal reinforcing rib 112, and a second longitudinal locking strip 151 corresponding to the first longitudinal locking strip 143 is provided on the second longitudinal locking strip 151, and a second longitudinal locking tooth 152 corresponding to the first longitudinal locking tooth 144 is provided on the second longitudinal locking strip 151.

[0052] Specifically, a longitudinal positioning assembly 1121 for positioning adjacent lining segments 111 is provided on the longitudinal stiffener 112. The longitudinal positioning assembly 1121 includes a longitudinal positioning member 14 fixedly connected to the side of a longitudinal stiffener 112 away from the lining segment 111. The longitudinal positioning member 14 consists of a T-shaped longitudinal positioning strip 141 and a longitudinal connecting block 142 located in the middle of the longitudinal positioning strip 141. The longitudinal connecting block 142 fixedly connects the longitudinal positioning strip 141 and the lining segment 111. This structure allows the longitudinal positioning strip 141 to be securely installed on the lining segment 111. A first longitudinal locking strip 143 is fixedly provided on the side of the longitudinal positioning strip 141 near the lining segment 111. The first longitudinal locking strip 143 is provided with a first longitudinal locking tooth 144. These teeth and the locking strip are designed to cooperate with the corresponding structures on the adjacent lining segments 111 to achieve precise positioning.

[0053] The longitudinal connecting port 15 corresponding to the longitudinal connecting block 142 is provided on another longitudinal reinforcing rib 112, and a second longitudinal locking strip 151 corresponding to the first longitudinal locking strip 143 is provided. The second longitudinal locking strip 151 is provided with a second longitudinal locking tooth 152 corresponding to the first longitudinal locking tooth 144. When adjacent lining segments 111 are spliced, the first longitudinal locking strip 143 and the first longitudinal locking tooth 144 of the longitudinal positioning member 14 will engage with the second longitudinal locking strip 151 and the second longitudinal locking tooth 152 on the other longitudinal reinforcing rib 112, thereby ensuring that the adjacent lining segments 111 are accurately positioned in the longitudinal direction and avoiding misalignment.

[0054] like Figures 2 to 5 As shown, in this embodiment, first longitudinal fixing holes 145 are provided on both longitudinal reinforcing ribs 112, and second longitudinal fixing holes 146 corresponding to the first longitudinal fixing holes 145 are provided on the longitudinal positioning strip 141. The connecting mechanism includes longitudinal connecting bolts, which sequentially connect the longitudinal reinforcing ribs 112 of adjacent lining units 10 and the longitudinal positioning strip 141 of any one of the lining units 10. Through the tightening action of the bolts, adjacent lining segments 111 are firmly fixed together to form an integral lining unit 10, enhancing the integrity and stability of the structure.

[0055] like Figures 2 to 5 As shown, in this embodiment, the arc-shaped positioning component 1131 includes an arc-shaped positioning member 18 fixedly connected to the side of an arc-shaped reinforcing rib 113 away from the lining segment 111. The arc-shaped positioning member 18 includes an arc-shaped positioning strip 181 arranged in an arc shape and arc-shaped connecting blocks 182 located at both ends of the arc-shaped positioning strip 181. The arc-shaped connecting blocks 182 are fixedly connected to the arc-shaped positioning strip 181 and the lining segment 111. A first arc-shaped locking strip 183 is fixedly provided on the side of the arc-shaped positioning strip 181 close to the lining segment 111, and a first arc-shaped locking tooth 184 is provided on the first arc-shaped locking strip 183.

[0056] An arc-shaped connecting port 19 corresponding to the arc-shaped connecting block 182 is provided on another arc-shaped reinforcing rib 113, and a second arc-shaped locking strip 191 corresponding to the first arc-shaped locking strip 183 is provided on the second arc-shaped locking strip 191, and a second arc-shaped locking tooth 192 corresponding to the first arc-shaped locking tooth 184 is provided on the second arc-shaped locking strip 191.

[0057] Specifically, the structure of the arc-shaped positioning component 1131 is similar to that of the longitudinal positioning component 1121. The arc-shaped positioning component 1131 includes an arc-shaped positioning member 18 fixedly connected to the side of an arc-shaped reinforcing rib 113 away from the lining segment 111. The arc-shaped positioning member 18 consists of an arc-shaped positioning strip 181 and arc-shaped connecting blocks 182 located at both ends of the arc-shaped positioning strip 181. The arc-shaped connecting blocks 182 fixedly connect the arc-shaped positioning strip 181 and the lining segment 111, ensuring a stable installation of the arc-shaped positioning strip 181. A first arc-shaped retaining strip 183 is fixedly provided on the side of the arc-shaped positioning strip 181 near the lining segment 111, and the first arc-shaped retaining strip 183 is provided with first arc-shaped retaining teeth 184.

[0058] An arc-shaped connecting port 19 corresponding to the arc-shaped connecting block 182 is provided on another arc-shaped reinforcing rib 113, and a second arc-shaped locking strip 191 corresponding to the first arc-shaped locking strip 183 is provided. The second arc-shaped locking strip 191 is provided with a second arc-shaped locking tooth 192 corresponding to the first arc-shaped locking tooth 184. When adjacent lining segments 111 are spliced ​​circumferentially, the first arc-shaped locking strip 183 and the first arc-shaped locking tooth 184 of the arc-shaped positioning member 18 will cooperate with the second arc-shaped locking strip 191 and the second arc-shaped locking tooth 192 on the other arc-shaped reinforcing rib 113 to achieve precise circumferential positioning and ensure that the lining segments 111 are spliced ​​tightly and neatly in the circumferential direction.

[0059] like Figures 2 to 5 As shown, in this embodiment, a first arc-shaped fixing hole 185 is provided on each of the two arc-shaped reinforcing ribs 113, and a second arc-shaped fixing hole 186 corresponding to the first arc-shaped fixing hole 185 is provided on the arc-shaped positioning strip 181. The connecting mechanism is an arc-shaped connecting bolt, which sequentially connects the arc-shaped reinforcing ribs 113 of adjacent lining units 10 to the arc-shaped positioning strip 181 of any one of the lining units 10. By tightening the bolts, the adjacent lining segments 111 are firmly connected in the circumferential direction, further enhancing the integrity and deformation resistance of the structure.

[0060] Specifically, both longitudinal connecting bolts and arc connecting bolts can be selected from various types of bolts commonly available on the market.

[0061] In this embodiment, the sealing unit includes a plurality of sealing rubber pads, which are disposed on the circumferential side of the corresponding lining segment 111.

[0062] Specifically, the sealing unit includes several sealing rubber gaskets, which are installed on the circumferential sides of the corresponding lining segments 111. The function of the sealing rubber gaskets is to fill the gaps between adjacent lining segments 111 after they are joined, preventing groundwater, mud, and other substances from seeping into the tunnel, thus achieving a waterproof and sealing effect. The sealing rubber gaskets have good elasticity and sealing performance, and can adapt to minor deformations of the lining segments 111 to a certain extent, ensuring the durability of the sealing effect.

[0063] In this embodiment, the connecting mechanism mainly consists of longitudinal connecting bolts and arc-shaped connecting bolts. The longitudinal connecting bolts pass through the first longitudinal fixing hole 145 of the longitudinal reinforcing rib 112 on the lining segment 111 and the second longitudinal fixing hole 146 of the longitudinal positioning member 14, as well as the first longitudinal fixing hole 145 of the longitudinal reinforcing rib 112 of the lining segment 111 adjacent to it. This connection method firmly fixes the longitudinally adjacent lining segments 111 together, forming a stable longitudinal connecting structure. The arc-shaped connecting bolts pass through the first arc-shaped fixing hole 185 of the arc-shaped reinforcing rib 113 on the lining segment 111 and the second arc-shaped fixing hole 186 of the arc-shaped positioning member 18, as well as the first arc-shaped fixing hole 185 of the arc-shaped reinforcing rib 113 of the circumferentially adjacent lining segment 111, achieving a firm connection between the circumferentially adjacent lining segments 111. The design of the connection mechanism enables the entire prefabricated lining device to form a reliable connection in both the longitudinal and circumferential directions, enhancing the integrity and stability of the structure and enabling it to better withstand the impact of external loads and changes in geological conditions.

[0064] like Figures 1 to 6 The present invention also provides an installation method for a prefabricated lining device. Based on the above-mentioned prefabricated lining device, a lining installation trolley 30 is used. The lining installation trolley 30 includes a track 31 and a trolley base 32 slidably arranged on the track 31. A lining feeding device 321 and a lining installation device 322 are sequentially arranged on the trolley base 32, as well as a locking construction platform 323 for locking the lining segments 111.

[0065] The lining feeding device 321 includes a lining lifting mechanism 33 and a lining erection device 34. The lining lifting mechanism 33 includes a lifting support frame 331 mounted on a trolley base 32. A lifting slide rail 332 is provided on the lifting support frame 331. A lining lifting device 333 is slidably connected to the lifting slide rail 332. A lining erection device 34 and a corresponding lining transfer slide rail 35 are provided on one side of the lifting support frame 331. A lining cabin 36 is slidably connected to the lining transfer slide rail 35.

[0066] The lining installation device 322 includes two parallel circular arc-shaped slide rails 37 and several hydraulic presses 38 arranged in a ring along the circular arc-shaped slide rails 37. A circular arc trolley 39 that can slide along the circular arc-shaped slide rails 37 is provided between the two circular arc-shaped slide rails 37. A lining gripping mechanism 391 and several screw jacks 392 are provided on the circular arc trolley 39.

[0067] Installation methods include:

[0068] The lining installation trolley 30 places the lining segment 111 onto the lining erection device 34 through the lining lifting mechanism 33, and then transports the lining segment 111 to the lining installation device 322 through the lining erection device 34.

[0069] The lining installation device 322 transports the lining segment 111 to the preparatory position on the arc-shaped slide rail 37 via the arc-shaped trolley 39, and then uses the hydraulic press 38 to push and install the lining segment 111 with the longitudinal positioning component 1121 of the longitudinally adjacent lining segment 111 and the arc-shaped positioning component 1131 of the circumferentially adjacent lining segment 111 for preliminary positioning.

[0070] Construction workers install a connecting mechanism on the initially positioned lining segment 111 by locking the construction platform 323 to connect adjacent lining units 10.

[0071] Specifically, the lining installation device 322 includes two parallel circular arched slide rails 37 and several hydraulic presses 38 arranged in a ring along the circular arched slide rails 37. The circular arched slide rails 37 are designed to adapt to the circular structure of the tunnel inner wall, enabling the installation device to better install the lining segments 111 into the appropriate positions. Between the two circular arched slide rails 37, there is a circular arc trolley 39 that can slide along the circular arched slide rails 37. The circular arc trolley 39 is equipped with a lining gripping mechanism 391 and several screw jacks 392.

[0072] The lining gripping mechanism 391 is used to grip the erected lining segments 111 and place them in the designated installation position. The screw jack 392 can adjust the height and angle of the lining segments 111 to ensure precise alignment with the already installed lining segments 111. The hydraulic press 38, after the lining segments 111 are initially positioned, uses a pushing action to ensure that the lining segments 111 are tightly engaged with the longitudinal positioning components 1121 of the longitudinally adjacent lining segments 111 and the arc-shaped positioning components 1131 of the circumferentially adjacent lining segments 111, thus achieving initial positioning.

[0073] In this embodiment, when the hydraulic press 38 pushes and installs the lining segment 111 with the longitudinal positioning component 1121 of the longitudinally adjacent lining segment 111 and the arc-shaped positioning component 1131 of the circumferentially adjacent lining segment 111 for initial positioning;

[0074] The longitudinal positioning member 14 of the lining segment 111 cooperates with the longitudinal connection port 15 of the longitudinally adjacent lining segment 111 so that the first longitudinal locking strip 143 and the first longitudinal locking tooth 144 on the longitudinal positioning member 14 cooperate with the second longitudinal locking strip 151 and the second longitudinal locking tooth 152 of the longitudinally adjacent lining segment 111 for positioning.

[0075] The arc-shaped positioning element 18 of the lining segment 111 mates with the arc-shaped connection port 19 of the adjacent circumferential lining segment 111, so that the first arc-shaped retaining strip 183 and the first arc-shaped retaining tooth 184 on the arc-shaped positioning element 18 engage with the second arc-shaped retaining strip 191 and the second arc-shaped retaining tooth 192 of the adjacent circumferential lining segment 111 for positioning. Through these precise positioning engagements, the accurate longitudinal and circumferential positions of the lining segment 111 are ensured.

[0076] In this embodiment, the connecting mechanism includes longitudinal connecting bolts and arc-shaped connecting bolts;

[0077] The longitudinal connecting bolts pass through the first longitudinal fixing hole 145 of the longitudinal reinforcing rib 112 on the lining segment 111 and the second longitudinal fixing hole 146 of the longitudinal positioning member 14, and the first longitudinal fixing hole 145 of the longitudinal reinforcing rib 112 of the lining segment 111 that is longitudinally adjacent to it, so as to form a fixed connection.

[0078] Arc-shaped connecting bolts pass through the first arc-shaped fixing hole 185 of the arc-shaped reinforcing rib 113 on the lining segment 111 and the second arc-shaped fixing hole 186 of the arc-shaped positioning member 18, forming a fixed connection with the first arc-shaped fixing hole 185 of the arc-shaped reinforcing rib 113 of the adjacent lining segment 111. By tightening the bolts, the adjacent lining segments 111 are firmly connected together to form a complete prefabricated assembled lining device.

[0079] This invention has many applications, including but not limited to the following described scenarios:

[0080] Subway tunnel construction demands extremely high precision in the installation and efficiency of the lining structure. This prefabricated assembled lining device and its installation method can meet the needs of rapid subway tunnel construction. During subway tunnel excavation, the lining installation trolley can quickly and accurately install the lining segments into place. Preliminary positioning using longitudinal and arc-shaped positioning components, followed by bolt fixing, ensures the integrity and sealing of the tunnel lining structure, effectively preventing groundwater leakage and guaranteeing the safety of subway operations. Simultaneously, the efficient installation method shortens the construction cycle and reduces the impact on urban traffic and the surrounding environment.

[0081] Railway tunnels typically have long distances and large cross-sectional dimensions, placing stringent requirements on the stability and durability of their lining structures. This technical solution is suitable for railway tunnel construction, and its precise positioning and fixing methods ensure the installation quality of the lining segments under complex geological conditions. In railway tunnel construction, the use of lining installation trolleys can adapt to tunnels with different cross-sectional shapes. Through proper positioning and fixing, the lining structure can withstand the enormous dynamic loads generated by train operation, ensuring the safe operation of the railway tunnel.

[0082] Urban underground utility tunnels integrate various municipal pipelines, requiring high standards for internal space utilization and structural safety. This prefabricated assembly lining device can be used for the lining construction of utility tunnels. Its modular design and convenient installation method improve construction efficiency and reduce the time spent occupying urban underground space. Precise positioning and fixing ensure the sealing and stability of the utility tunnel lining structure, preventing the intrusion of groundwater and harmful gases, and guaranteeing the normal operation of various pipelines within the tunnel.

[0083] In water conservancy tunnel projects, such as water diversion tunnels and drainage tunnels, the requirements for the waterproof performance and seepage resistance of the lining structure are high. The sealing unit and precise installation positioning method in this technical solution can effectively improve the waterproof effect of the lining structure. Through the initial positioning of longitudinal and arc-shaped positioning components and bolt fixing, a tight connection between the lining segments can be ensured, reducing leakage channels, ensuring the normal operation of the water conservancy tunnel, and preventing water waste and adverse impacts on the surrounding environment.

Claims

1. A precast segmental lining device, characterized by, The application relates to a lining device and a lining installation trolley. The lining device comprises lining units and sealing units arranged on the circumferential sides of the lining units, the lining units comprise lining segments, and connecting mechanisms are arranged between adjacent lining segments; The lining segment has a longitudinal section in the shape of a circular arc, the lining segment has two symmetrically-distributed longitudinal side edges and two symmetrically-distributed arc-shaped edges, longitudinal reinforcing ribs are arranged on the inner sides of the lining segment along the two longitudinal side edges respectively, and arc-shaped reinforcing ribs are arranged on the inner sides of the lining segment along the two arc-shaped edges respectively, longitudinal positioning components for positioning adjacent lining segments are arranged on the longitudinal reinforcing ribs, and arc-shaped positioning components for positioning adjacent lining segments are arranged on the arc-shaped reinforcing ribs; The longitudinal positioning component comprises a longitudinal positioning piece fixedly connected to one longitudinal reinforcing rib away from the lining segment, the longitudinal positioning piece comprises a T-shaped longitudinal positioning strip and a longitudinal connecting block located at the middle position of the longitudinal positioning strip, the longitudinal connecting block fixedly connects the longitudinal positioning strip and the lining segment, a first longitudinal clamping strip is fixedly arranged on one side of the longitudinal positioning strip close to the lining segment, and a first longitudinal clamping tooth is arranged on the first longitudinal clamping strip; A longitudinal connecting port corresponding to the longitudinal connecting block is arranged on the other longitudinal reinforcing rib, a second longitudinal clamping strip corresponding to the first longitudinal clamping strip is arranged, and a second longitudinal clamping tooth corresponding to the first longitudinal clamping tooth is arranged on the second longitudinal clamping strip; The arc-shaped positioning component comprises an arc-shaped positioning piece fixedly connected to one arc-shaped reinforcing rib away from the lining segment, the arc-shaped positioning piece comprises an arc-shaped positioning strip arranged in an arc shape and arc-shaped connecting blocks located at the two ends of the arc-shaped positioning strip, the arc-shaped connecting blocks fixedly connect the arc-shaped positioning strip and the lining segment, a first arc-shaped clamping strip is fixedly arranged on one side of the arc-shaped positioning strip close to the lining segment, and a first arc-shaped clamping tooth is arranged on the first arc-shaped clamping strip; An arc-shaped connecting port corresponding to the arc-shaped connecting block is arranged on the other arc-shaped reinforcing rib, a second arc-shaped clamping strip corresponding to the first arc-shaped clamping strip is arranged, and a second arc-shaped clamping tooth corresponding to the first arc-shaped clamping tooth is arranged on the second arc-shaped clamping strip.

2. A precast lining device according to claim 1, wherein, First longitudinal fixing holes are formed in the two longitudinal reinforcing ribs, second longitudinal fixing holes corresponding to the first longitudinal fixing holes are arranged on the longitudinal positioning strip, the connecting mechanism comprises longitudinal connecting bolts, and the longitudinal connecting bolts sequentially connect the longitudinal reinforcing ribs of adjacent lining segments and the longitudinal positioning strip of any one of the lining segments.

3. A prefabricated lining device according to claim 1, characterized in that First arc-shaped fixing holes are formed in the two arc-shaped reinforcing ribs, second arc-shaped fixing holes corresponding to the first arc-shaped fixing holes are arranged on the arc-shaped positioning strip, the connecting mechanism comprises arc-shaped connecting bolts, and the arc-shaped connecting bolts sequentially connect the arc-shaped reinforcing ribs of adjacent lining segments and the arc-shaped positioning strip of any one of the lining segments.

4. A precast lining device according to claim 3, wherein, The sealing unit comprises a plurality of sealing rubber pads arranged on the circumferential sides of the corresponding lining segments.

5. A method of installing a precast lining device according to claim 4, characterised in that, The lining installation trolley comprises a track and a trolley base slidingly arranged on the track, a lining feeding device and a lining installation device are sequentially arranged on the trolley base, and a locking construction platform for locking the lining segments is arranged. The lining loading device comprises a lining lifting mechanism and a lining erecting device, the lining lifting mechanism comprises a lifting support frame arranged on a trolley base, a lifting slide rail is arranged on the lifting support frame, a lining lifting device is slidably connected to the lifting slide rail, the lining erecting device is arranged on one side of the lifting support frame, and a lining transfer slide rail corresponding to the lining erecting device is arranged on the one side of the lifting support frame, and a lining seat cabin is slidably connected to the lining transfer slide rail; The lining mounting device comprises two circular-arc-arch slide rails arranged in parallel and a plurality of hydraulic machines arranged in a ring along the circular-arc-arch slide rails, a circular-arc trolley capable of sliding along the circular-arc-arch slide rails is arranged between the two circular-arc-arch slide rails, and a lining grabbing mechanism and a plurality of screw jacks are arranged on the circular-arc trolley; The mounting method comprises the following steps: The lining mounting trolley places the lining segment on the lining erecting device through the lining lifting mechanism, and then the lining erecting device transports the lining segment to the lining mounting device; The lining mounting device transports the lining segment to a preliminary position on the circular-arc-arch slide rail through the circular-arc trolley, and then the hydraulic machine preliminarily positions the lining segment through the longitudinal positioning assembly of the longitudinally adjacent lining segment and the arc-shaped positioning assembly of the circumferentially adjacent lining segment; The construction personnel install the connecting mechanism on the preliminarily positioned lining segment through the locking construction platform to connect the adjacent lining units.

6. A method of installing a precast lining device according to claim 5, wherein, When the hydraulic machine preliminarily positions the lining segment through the longitudinal positioning assembly of the longitudinally adjacent lining segment and the arc-shaped positioning assembly of the circumferentially adjacent lining segment; The longitudinal positioning member of the lining segment cooperates with the longitudinal connecting port of the longitudinally adjacent lining segment, so that the first longitudinal clamping strip and the first longitudinal clamping tooth on the longitudinal positioning member are positioned in cooperation with the second longitudinal clamping strip and the second longitudinal clamping tooth of the longitudinally adjacent lining segment; The arc-shaped positioning member of the lining segment cooperates with the arc-shaped connecting port of the circumferentially adjacent lining segment, so that the first arc-shaped clamping strip and the first arc-shaped clamping tooth on the arc-shaped positioning member are positioned in cooperation with the second arc-shaped clamping strip and the second arc-shaped clamping tooth of the circumferentially adjacent lining segment.

7. A method of installing a precast lining device according to claim 6, wherein, The connecting mechanism comprises a longitudinal connecting bolt and an arc-shaped connecting bolt; The longitudinal connecting bolt penetrates through the first longitudinal fixed hole of the longitudinal reinforcing rib on the lining segment, the second longitudinal fixed hole of the longitudinal positioning member, and the first longitudinal fixed hole of the longitudinal reinforcing rib of the longitudinally adjacent lining segment, to form a fixed connection; The arc-shaped connecting bolt penetrates through the first arc-shaped fixed hole of the arc-shaped reinforcing rib on the lining segment, the second arc-shaped fixed hole of the arc-shaped positioning member, and the first arc-shaped fixed hole of the arc-shaped reinforcing rib of the circumferentially adjacent lining segment, to form a fixed connection.

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