CN110374623B - Prefabricated platform and installation method thereof - Google Patents
Prefabricated platform and installation method thereof Download PDFInfo
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- CN110374623B CN110374623B CN201910724336.5A CN201910724336A CN110374623B CN 110374623 B CN110374623 B CN 110374623B CN 201910724336 A CN201910724336 A CN 201910724336A CN 110374623 B CN110374623 B CN 110374623B
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- 238000009434 installation Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 25
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000007569 slipcasting Methods 0.000 claims description 6
- 239000002002 slurry Substances 0.000 claims description 3
- 230000007480 spreading Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 27
- 238000009417 prefabrication Methods 0.000 abstract description 6
- 230000001360 synchronised effect Effects 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 230000032258 transport Effects 0.000 description 9
- 238000011065 in-situ storage Methods 0.000 description 6
- 230000007613 environmental effect Effects 0.000 description 5
- 238000005266 casting Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000004570 mortar (masonry) Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000004075 alteration Effects 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
- E21D9/122—Working or loading platforms
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- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention provides a prefabricated platform and an installation method thereof, wherein the prefabricated platform comprises a bearing body and a plurality of reserved cast-in-place grooves arranged in the bearing body, the reserved cast-in-place grooves extend into the bearing body from the surface of the bearing body, and the maximum vertical height of the prefabricated platform is less than or equal to the maximum vertical height of a transportation platform. According to the installation method of the prefabricated platform, the duct piece is installed firstly, and then the prefabricated platform is installed correspondingly, so that the synchronous installation of the duct piece and the prefabricated platform is achieved, the problems of transportation and construction quality caused by the fact that concrete is limited by the environment during the construction of a transportation channel in a shield tunnel are solved, meanwhile, when the maximum vertical height of the prefabricated platform is smaller than the maximum vertical height of the transportation platform, concrete can be cast in place through the reserved cast-in-place groove to form the transportation channel, the formation of the transportation channel is optimized to a prefabrication and cast-in-place mode, and the construction efficiency is improved.
Description
Technical Field
The invention relates to the technical field of shield engineering construction, in particular to a prefabricated platform and an installation method thereof.
Background
With the rapid development of urban infrastructure construction, more and more traffic major roads and important pipelines develop underground, and the shield method is widely applied as a construction process with the least influence on the ground and the least environmental restriction. However, in the tunnel constructed by the shield method, due to the limitation of the prior art and the construction cost, the shield tunnel is formed by lining common segments, and if the shield tunnel is used for the construction of automobile walking, train running, pipeline laying and the like, the segments and the shield tunnel are easily damaged due to the large mass of large-scale equipment such as automobiles and the like, and in order to avoid the situation, a transportation channel is often required to be arranged in the shield tunnel to bear the large-scale equipment such as automobiles and the like.
At present, the formation of the transportation channel is generally divided into two modes, one mode is that after the shield tunnel is paved, prepared concrete is transported to a preset position through concrete pouring matching equipment for pouring construction, but because the distance of the shield tunnel is long, the concrete is easy to be preliminarily condensed in the transportation process, the quality is not easy to control, and the efficiency is low; secondly, the concrete is adopted for the in-situ mixing construction, and the quality of the concrete cannot be guaranteed due to the poor internal environment of the shield tunnel. Therefore, how to ensure the quality of the transportation channel and improve the construction efficiency thereof is a problem which needs to be solved urgently at present.
Disclosure of Invention
The invention aims to provide a prefabricated platform and an installation method thereof, which solve the problems of transportation and construction quality caused by environmental limitation of concrete during the construction of a transportation channel in a shield tunnel.
In order to achieve the above object, the present invention provides a prefabricated platform for forming a transportation channel on a segment at the bottom of a shield tunnel, comprising a bearing body and a plurality of reserved cast-in-place grooves arranged in the bearing body, wherein the reserved cast-in-place grooves extend into the bearing body from the surface of the bearing body, and the maximum vertical height of the prefabricated platform is less than or equal to the maximum vertical height of the transportation platform.
Optionally, the plurality of reserved cast-in-place slots are all arranged in a direction perpendicular to the shield tunnel.
Optionally, the prefabricated platform still includes a plurality of connecting screw holes, and a plurality of connecting screw hole all follow the lateral wall outer edge of bearing the body the direction of shield tunnel extends to in the reservation cast-in-place groove.
Optionally, the prefabricated platform is further provided with a reserved grouting groove arranged in the bearing body, the reserved grouting groove extends from the top surface of the bearing body to the bearing body and penetrates through the bearing body, a grouting hole is formed in the pipe piece, and the bottom of the reserved grouting groove covers the grouting hole.
Optionally, an embedded steel plate is further arranged in the bearing body, and the embedded steel plate is located between the reserved cast-in-place groove and the reserved grouting groove and used for temporarily providing a transportation device for walking.
Optionally, the bottom surface of the bearing body and the top surface of the duct piece are both arc-shaped, and the radian of the bottom surface of the bearing body is matched with the radian of the top surface of the duct piece.
Optionally, a hoisting threaded hole is formed in the center of the bearing body, and a screw of a hoisting device is inserted into the hoisting threaded hole to hoist the prefabricated platform.
Based on the above, the invention also provides an installation method of the prefabricated platform, which comprises the following steps:
step S1: after a segment is transported into the shield tunnel and laid to the bottom of the shield tunnel, step S2 is executed;
step S2: transporting the prefabricated platform into the shield tunnel and lifting the prefabricated platform to a set installation position corresponding to the segment, and executing the step S3;
step S3: and (5) dropping and fixing the prefabricated platform to the set installation position, and returning to the step (S1) until the bottom of the shield tunnel is fully paved with the prefabricated platform.
Optionally, the prefabricated platform and the duct piece are transported and installed by the same equipment.
Optionally, the prefabricated platform is paved at the bottom of the shield tunnel, and the installation method of the prefabricated platform further includes:
acquiring the vertical height of the prefabricated platform;
when the maximum vertical height of the prefabricated platform is smaller than the maximum vertical height of the transportation platform, a concrete layer is formed, the concrete layer is filled in the reserved cast-in-place groove and extends to cover the surface of the bearing body, and the sum of the maximum vertical height of the concrete layer and the prefabricated platform is equal to the maximum vertical height of the transportation platform.
Optionally, the prefabricated platform still includes a plurality of connecting screw hole, and is a plurality of connecting screw hole all follows the lateral wall outer edge of prefabricated platform shield tunnel's direction extends to in reserving the cast-in-place groove, through the screw hole will adjacent two prefabricated platform connects.
Optionally, before performing step S3, the method for installing the prefabricated platform further includes spreading a slurry on the segment.
In the prefabrication platform provided by the invention, the prefabrication platform comprises a bearing body and a plurality of reserved cast-in-place grooves arranged in the bearing body, the reserved cast-in-place grooves extend into the bearing body from the surface of the bearing body, and the maximum vertical height of the prefabrication platform is less than or equal to the maximum vertical height of the transportation platform. In the installation method provided by the invention, the synchronous installation of the duct piece and the prefabricated platform is realized by installing the duct piece first and then installing the prefabricated platform correspondingly, the problems of transportation and construction quality caused by the environmental limitation of concrete when the transportation channel in the shield tunnel is constructed are solved, meanwhile, when the maximum vertical height of the prefabricated platform is less than that of the transportation platform, forming a concrete layer by reserving the cast-in-place groove and casting concrete in situ, wherein the concrete layer fills the reserved cast-in-place groove and extends to cover the surface of the bearing body to form the transportation channel, and the sum of the maximum vertical heights of the concrete layer and the prefabricated platform is equal to the maximum vertical height of the transportation platform, therefore, the transportation channel in the shield tunnel is optimized to be a prefabricated and cast-in-place mode, and the construction efficiency and the construction quality are improved.
Drawings
FIG. 1 is a top view of a prefabricated platform provided by embodiments of the present invention;
FIG. 2 is a schematic cross-sectional view of a prefabricated platform according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of the prefabricated platform after a concrete layer is formed in the embodiment of the invention;
FIG. 4 is a diagram of a position of a reserved grouting groove of a prefabricated platform according to an embodiment of the present invention;
FIG. 5 is a schematic illustration of a prefabricated platform installation provided by an embodiment of the present invention;
FIG. 6 is a diagram illustrating steps for installing a prefabricated platform according to an embodiment of the present invention;
wherein the reference numerals are:
101-bottom die; 102-side die; 110-grouting holes; 131-straight bolts;
10-a carrier body; 11-reserving a grouting groove; 12-reserving a cast-in-place groove; 13-connecting threaded holes; 14-hoisting the threaded hole; 15-pre-burying a steel plate; 21-single beam; 22-overhead traveling crane;
1-prefabricating a platform; 2-a segment transfer device; 3-segment transport vehicle; 4-concrete layer;
h-the maximum vertical height of the prefabricated platform; h-the maximum vertical height of the transport platform.
Detailed Description
The following describes in more detail embodiments of the present invention with reference to the schematic drawings. The advantages and features of the present invention will become more apparent from the following description. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.
As shown in fig. 1, fig. 2 and fig. 3, the embodiment provides a prefabricated platform 1 for forming a transportation channel on a segment at the bottom of a shield tunnel, including a bearing body 10 and a plurality of reserved cast-in-place troughs 12 arranged in the bearing body 10, where the reserved cast-in-place troughs 12 extend into the bearing body 10 from the surface of the bearing body 10, and a maximum vertical height H of the prefabricated platform 1 is less than or equal to a maximum vertical height H of the transportation platform. It should be noted that, because the top surface of section of jurisdiction is the arc, for better matching the section of jurisdiction, the bottom surface of prefabricated platform also is the arc, consequently, the biggest vertical height that mentions in this application indicates that the top surface of prefabricated platform 1 or transportation platform is along the perpendicular to arrive the biggest distance of the bottom surface of prefabricated platform or transportation platform in the direction of shield tunnel.
The transportation channel is mainly applied to occasions where the diameter of the shield tunnel is between 3m and 6m, is arranged on a duct piece at the bottom of the shield tunnel, is used as a supporting structure of the shield tunnel, is used for bearing large-scale equipment and mainly bears vertical load. When the vertical heights of the prefabricated platform 1 and the transportation channel are designed, the height of the transportation channel is fully considered to be smaller than the maximum allowable height of a shield machine and a rear corollary equipment space so that the corollary equipment can normally pass, after the prefabricated platform 1 is fully paved on the shield tunnel, when the maximum vertical height H of the prefabricated platform 1 is smaller than the maximum vertical height H of the transportation platform, concrete can be poured through a reserved cast-in-place groove 12 to form a concrete layer 4, the concrete layer 4 fills the reserved cast-in-place groove 12 and extends to cover the surface of the bearing body 10 to form the transportation platform, the sum of the vertical height of the concrete layer 4 and the maximum vertical height H of the prefabricated platform 1 is equal to the maximum vertical height H of the transportation platform, the construction amount of later cast-in-place construction is greatly reduced, and a shield tunnel with two times as long as one concrete can be constructed, meanwhile, the prefabricated platform can be used as the foundation of the transport channel, the problems of transportation and construction quality caused by environmental limitation of concrete during construction of the transport channel in the shield tunnel are solved, the damage of large-scale construction equipment to the duct piece is also avoided, and the construction efficiency is greatly improved.
Meanwhile, the width of the prefabricated platform 1 is designed in such a way that the wedge amount of the duct piece is considered, the staggered joint rotation exists during the construction of the lining of the duct piece, and the left wedge amount and the right wedge amount are unequal, so that the width of the prefabricated platform 1 cannot be equal to the ring width of the duct piece, but is equal to the difference value between the ring width and the wedge amount, so that the gap between the prefabricated platforms 1 is smaller, and the placement cannot be influenced by the turning of a tunnel.
Further, because the top surface of section of jurisdiction is the arc, the bottom surface that bears body 10 also is the arc, just the radian of the bottom surface that bears body 10 with the radian phase-match of the top surface of section of jurisdiction, so that bear body 10 with the section of jurisdiction is laminated completely.
With continued reference to fig. 1 and 2, a plurality of the reserved cast-in-place troughs 12 are all arranged along a direction perpendicular to the shield tunnel. In this embodiment, the prefabrication platform 1 comprises two reserved cast-in-place troughs 12, and the two reserved cast-in-place troughs 12 are symmetrically arranged relative to the center of the load bearing body 10. The shape of the reserved cast-in-place tank 12 is a cuboid, and certainly, the reserved cast-in-place tank can also be other shapes such as a cube, and the invention is not limited in any way. After the shield tunnel is fully paved with the prefabricated platform 1, when the maximum vertical height H of the prefabricated platform 1 is smaller than the maximum vertical height H of the transportation platform, the transportation platform can be formed by reserving the cast-in-place groove 12 and casting concrete in situ, as shown in fig. 3, and meanwhile, reinforcing meshes can be arranged in the groove of the reserved cast-in-place groove 12 and the concrete layer 4 and connected with each other, so that the prefabricated platform 1 and the concrete layer 4 are connected into a whole.
Further, the prefabricated platform 1 further comprises a plurality of connection threaded holes 13 for connecting the two prefabricated platforms 1, and the connection threaded holes 13 extend into the reserved cast-in-place groove 12 from the side wall of the bearing body 10 along the direction of the transportation channel. In this embodiment, the prefabricated platform 1 includes four connecting threaded holes 13, each side is two, and four the connecting threaded holes 13 are symmetrically arranged on two sides of the bearing body 10, and when connecting two prefabricated platforms 1, the connecting threaded holes 13 of one prefabricated platform 1 pass through the connecting threaded holes 13 of another prefabricated platform 1 through the straight bolts 131 to connect and fix.
Referring to fig. 1 and 4, the prefabricated platform 1 further includes a plurality of reserved grouting grooves 11, the reserved grouting grooves 11 extend into the bearing body 10 from the top surface of the bearing body 10 and penetrate through the bearing body 10, grouting holes 110 are formed in the duct piece, and the bottoms of the reserved grouting grooves 11 cover the grouting holes 110 to meet the requirement of secondary grouting on the bottom of the tunnel in the later period. Specifically, because each ring is all rotatory during the section of jurisdiction installation, can not form the rule of logical seam according to the rotatory two continuous rings of section of jurisdiction, can simulate the main position that appears in section of jurisdiction slip casting hole, set up and reserve slip casting groove 11, make the tank bottom of reserving slip casting groove 11 cover slip casting hole 110 can.
Referring to fig. 1, an embedded steel plate 15 is further disposed in the bearing body 10, the embedded steel plate 15 is located between the reserved cast-in-place trough 12 and the reserved grouting trough 11 and is used for temporarily providing for a transportation device to travel, for example, the transportation device may be a segment transportation device, the embedded steel plate 15 serves as a temporary transportation rail foundation for the segment transportation device to travel, and the embedded steel plate 15 may be fixed to the bearing body 10 in an anchoring connection manner.
Further, a lifting threaded hole 14 is formed in the center of the bearing body 10, and a screw of a lifting device is inserted into the lifting threaded hole 14 to lift the prefabricated platform 1.
Accordingly, the present embodiment further provides an installation method of the prefabricated platform, please refer to fig. 5 and 6, including the following steps:
step S1: transporting a segment into the shield tunnel and laying the segment to the bottom of the shield tunnel, and executing the step S2;
step S2: transporting the prefabricated platform into the shield tunnel and lifting the prefabricated platform to a set installation position corresponding to the segment, and executing the step S3;
step S3: and (5) dropping and fixing the prefabricated platform to the set installation position, and returning to the step (S1) until the bottom of the shield tunnel is fully paved with the prefabricated platform.
Step S1 is first executed, as shown in fig. 5, the segments are transported into the shield tunnel by a segment transport vehicle 3, and then the segments are lifted from the segment transport vehicle 3 to the assembling machine at the front end of the shield tunnel by a segment transfer device 2, and the segments are assembled. Then step S2 is executed, the segment transport vehicle 3 transports the prefabricated platform 1 into the shield tunnel, and the segment transfer device 2 transports the prefabricated platform 1 to the set installation position corresponding to the segment.
Further, the base slurry is spread on the duct piece, so that the duct piece can be better attached to the prefabricating platform 1. The mortar of the seat spread between the duct piece and the prefabricating platform 1 can adopt self-mixing mortar or post grouting, the thickness can be 20mm, and the mortar can also be adjusted according to the wedge-shaped amount of the duct piece.
And then, executing a step S3, dropping the prefabricated platform 1 onto a corresponding pipe piece through the pipe piece transfer device 2, connecting and fixing the prefabricated platform 1 and the adjacent installed prefabricated platform 1 through the straight bolts 131, and finally returning to the step S1 until the bottom of the shield tunnel is fully paved on the prefabricated platform 1.
Because the transportation and the installation of the duct piece and the prefabricated platform 1 adopt the same equipment, the adoption of special installation machinery is avoided, the occupation of excessive space is avoided, and meanwhile, because the assembly of the duct piece and the installation of the prefabricated platform are carried out synchronously, the construction process is simplified, and the construction efficiency is also improved. It should be noted that the hoisting capacity of the prefabrication platform 1 is preferably equivalent to that of the pipe piece, and if the weight of the pipe piece exceeds the weight of the pipe piece, a device with larger hoisting capacity can be considered when the pipe piece transferring device 2 is configured.
Wherein, section of jurisdiction transfer device 2 includes monospar 21 and overhead traveling crane 22, monospar 21 does the track of overhead traveling crane 22 operation, overhead traveling crane 22 inserts the screw rod hoisting screw hole 14 on the prefabricating platform 1 plays in order to with prefabricating platform 1 handling to preset position, the handling of section of jurisdiction also can adopt same mode.
Further, combine figure 3, will shield tunnel bottom is paved prefabricated platform 1 acquires prefabricated platform 1's vertical height, works as prefabricated platform 1's maximum vertical height H is less than when transportation platform's maximum vertical height H, the accessible is reserved cast in situ groove 12 cast in situ concrete and is filled prefabricated platform 1 and extend and cover the surface of prefabricated platform 1 to form a concrete layer 4, the vertical height on concrete layer with the sum of the maximum vertical height H of prefabricated platform equals transportation platform's maximum vertical height H.
In summary, the present invention provides a precast platform and an installation method thereof, where the precast platform includes a bearing body and a plurality of reserved cast-in-place troughs disposed in the bearing body, the reserved cast-in-place troughs extend into the bearing body from a surface of the bearing body, and a maximum vertical height of the precast platform is less than or equal to a maximum vertical height of the transportation platform. In the installation method provided by the invention, the synchronous installation of the duct piece and the prefabricated platform is realized by installing the duct piece first and then installing the prefabricated platform correspondingly, the problems of transportation and construction quality caused by the environmental limitation of concrete when the transportation channel in the shield tunnel is constructed are solved, meanwhile, when the maximum vertical height of the prefabricated platform is less than that of the transportation platform, forming a concrete layer by reserving the cast-in-place groove and casting concrete in situ, wherein the concrete layer fills the reserved cast-in-place groove and extends to cover the surface of the bearing body to form the transportation channel, and the sum of the maximum vertical heights of the concrete layer and the prefabricated platform is equal to the maximum vertical height of the transportation platform, therefore, the transportation channel in the shield tunnel is optimized to be a prefabricated and cast-in-place mode, and the construction efficiency and the construction quality are improved.
The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any way. It will be understood by those skilled in the art that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (11)
1. The utility model provides a prefabricated platform for form transportation platform on the section of jurisdiction of a shield tunnel bottom, its characterized in that, including bear the body and set up in bear a plurality of reservation cast-in-place grooves in the body, reserve cast-in-place groove follow the surface extension of bearing the body is gone into bear in the body, the biggest vertical height of prefabricated platform is less than or equals the biggest vertical height of transportation platform, prefabricated platform still including set up in bear the internal reservation grouting groove of body, reservation grouting groove follows the top surface extension of bearing the body bear in the body and run through bear the body, be provided with the slip casting hole on the section of jurisdiction, the tank bottom of reservation grouting groove covers the slip casting hole, there is the wedge volume in the section of jurisdiction, the width of prefabricated platform equals the ring width of section of jurisdiction with the difference of wedge volume.
2. The precast platform of claim 1, wherein a plurality of the reserved cast-in-place troughs are each arranged in a direction perpendicular to the shield tunnel.
3. The precast platform of claim 1, further comprising a plurality of connecting threaded holes each extending from outside the side wall of the load bearing body into the reserved cast-in-place trough in the direction of the shield tunnel.
4. The precast platform of claim 1, wherein an embedded steel plate is further disposed in the bearing body, and the embedded steel plate is located between the reserved cast-in-place trough and the reserved grouting trough and is temporarily used for a transportation device to walk.
5. The precast platform of claim 1 wherein the bottom surface of the load bearing body and the top surface of the segment are both curved and the curvature of the bottom surface of the load bearing body matches the curvature of the top surface of the segment.
6. The precast platform of claim 1, wherein a lifting screw hole is provided at the center of the load bearing body, and a lifting screw of a lifting device is inserted into the lifting screw hole to lift the precast platform.
7. A method of installing a prefabricated platform according to any one of claims 1 to 6, wherein the prefabricated platform comprises:
step S1: transporting a segment into the shield tunnel and laying the segment to the bottom of the shield tunnel, and executing the step S2;
step S2: transporting the prefabricated platform into the shield tunnel and lifting the prefabricated platform to a set installation position corresponding to the segment, and executing the step S3;
step S3: and (5) dropping and fixing the prefabricated platform to the set installation position, and returning to the step (S1) until the bottom of the shield tunnel is fully paved with the prefabricated platform.
8. A method of installing a prefabricated platform according to claim 7 wherein the same equipment is used for both transport and installation of said segment.
9. The method for installing a prefabricated platform according to claim 7, wherein after the prefabricated platform is paved on the bottom of the shield tunnel, the method for installing the prefabricated platform further comprises the following steps:
acquiring the vertical height of the prefabricated platform;
when the maximum vertical height of the prefabricated platform is smaller than the maximum vertical height of the transportation platform, a concrete layer is formed, the concrete layer is filled in the reserved cast-in-place groove and extends to cover the surface of the bearing body, and the sum of the maximum vertical height of the concrete layer and the prefabricated platform is equal to the maximum vertical height of the transportation platform.
10. The method for installing the prefabricated platform, according to claim 7, wherein the prefabricated platform further comprises a plurality of connecting threaded holes, the connecting threaded holes all extend into the reserved cast-in-place groove from the outer side wall of the prefabricated platform along the direction of the shield tunnel, and two adjacent prefabricated platforms are connected through the threaded holes.
11. The method of installing a precast platform of claim 7, wherein the method of installing a precast platform further comprises spreading a setting slurry on the duct piece before performing step S3.
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| CN201910724336.5A CN110374623B (en) | 2019-08-07 | 2019-08-07 | Prefabricated platform and installation method thereof |
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| CN111927486A (en) * | 2020-07-01 | 2020-11-13 | 上海市政工程设计研究总院（集团）有限公司 | Tunnel prefabricated structure construction method |
| CN112523770B (en) * | 2020-11-27 | 2023-01-24 | 上海市基础工程集团有限公司 | Small-diameter shield tunnel prefabricating platform based on temporary and permanent combination |
| CN115163091A (en) * | 2022-06-23 | 2022-10-11 | 上海燃气工程设计研究有限公司 | Construction method of comprehensive utilization platform in ultra-long distance small-diameter tunnel |
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| 天然气过江隧道内管道平台的设计及施工工艺;顾华金等;《上海煤气》;20190425;第5-8页 * |
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