CN210564554U - Novel shield constructs section of jurisdiction - Google Patents
Novel shield constructs section of jurisdiction Download PDFInfo
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- CN210564554U CN210564554U CN201921608060.6U CN201921608060U CN210564554U CN 210564554 U CN210564554 U CN 210564554U CN 201921608060 U CN201921608060 U CN 201921608060U CN 210564554 U CN210564554 U CN 210564554U
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Abstract
The utility model discloses a novel shield constructs section of jurisdiction, through set up fibre combined material panel and reinforcing bar in shield constructs section of jurisdiction mould, then pour in the shield constructs the section of jurisdiction and mix earth and take shape to the shield and construct the section of jurisdiction, fibre combined material panel sets up the internal surface at shield constructs section of jurisdiction mould, because fibre combined material panel has that the quality is light, the anti-corrosion candle, the characteristics that fatigue resistance can be good, make shield constructs section of jurisdiction structure own have corrosion resistance, the recombination sets up the stagnant water board in longitudinal joint department, great improvement shield constructs the corrosion resistance and the waterproof nature of section of jurisdiction, the service life of shield constructs the section of jurisdiction has been increased, and the safety performance is improved. Meanwhile, a T-shaped slot is formed in one end of the shield segment, a T-shaped plug-in is fixed to the other end of the shield segment, quick splicing is achieved through the cooperation of the T-shaped slot and the T-shaped plug-in, and the limiting effect of the water stop plate on the two adjacent shield segments is combined, so that the situation of offset and dislocation after splicing is avoided, and the safety performance of the shield segment is further improved.
Description
Technical Field
The utility model relates to a shield constructs section of jurisdiction field, specifically is a novel shield constructs section of jurisdiction.
Background
At present, with the high-speed development of underground traffic such as urban subways, submarine tunnels and the like, higher requirements are put forward on tunnel engineering, and the tunnel engineering has the characteristics of good structural safety, high bearing capacity, long durability and the like. Therefore, a shield method is often used for construction of tunnel engineering, a core stress component in the shield method is a shield segment, the shield segment is easily soaked by corrosive chloride ions, chromium sulfate ions or underground water in the environment for a long time, so that the segment is corroded, particularly, a seam between adjacent segments, namely a longitudinal seam, easily enters corrosion factors along the shield direction, namely a circumferential seam, so that the corrosion degree is relatively serious, in the prior art, annular shield segments are connected in a staggered mode, so that seams between adjacent segments in the shield direction are not on the same straight line, so that the corrosion of the circumferential seam is avoided, a better solution is not provided for the longitudinal seam in the prior art, because the inner ring of the shield segment is below the ground, the corrosion factors on the ground easily enter from the longitudinal seam of the inner ring of the shield segment, so that the shield segment is corroded, meanwhile, the shield segment structure in the prior art does not have corrosion resistance, and even if a waterproof and corrosion-resistant structure is added on the shield segment, the shield segment structure only plays a certain role in relieving, so that the corrosion resistance of the shield segment cannot be improved to a great extent, the segment is damaged in a large area, and large and deep cracks, peeling and the like are generated to influence the safety, durability and later-stage operation safety of the tunnel structure;
simultaneously, prior art when carrying out the annular concatenation of shield structure section of jurisdiction, the steadiness is relatively poor and the installation difficulty, and the annular concatenation that leads to the shield structure section of jurisdiction wastes time and energy, and a plurality of shield structure sections of jurisdiction splices the back together, takes place the skew dislocation easily, leads to the tunnel to have the potential safety hazard.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome prior art not enough, a novel shield constructs section of jurisdiction is provided, through set up fibre combined material panel and reinforcing bar in shield constructs section of jurisdiction mould, then pour in the shield constructs the section of jurisdiction and mix earth and take shape to the shield and construct the section of jurisdiction, fibre combined material panel sets up the internal surface at shield constructs section of jurisdiction mould, because fibre combined material panel has the quality light, the corrosion-resistant candle, characteristics that fatigue resistance can be good, make the structure of shield structure section of jurisdiction itself have corrosion resistance, the reunion sets up the stagnant water board in longitudinal joint department, great improvement the corrosion resistance and the waterproof nature of shield structure section of jurisdiction, the service life of shield structure section of jurisdiction has been increased, and the safety performance is improved. Meanwhile, a T-shaped slot is formed in one end of the shield segment, a T-shaped plug-in is fixed to the other end of the shield segment, quick splicing is achieved through the cooperation of the T-shaped slot and the T-shaped plug-in, splicing of the shield segment is time-saving and labor-saving, the limiting effect of the water stop plate on the two adjacent shield segments is combined, the situation of offset and dislocation after splicing is avoided, and the safety performance of the shield segment is further improved.
The purpose of the utility model is realized through the following technical scheme: the utility model provides a novel shield constructs section of jurisdiction, a serial communication port, including fibre combined material panel (2), shield constructs section of jurisdiction (3) and a plurality of reinforcing bar, the inside bottom surface and the side of shield constructs section of jurisdiction (3) all are provided with fibre combined material panel (2), a plurality of reinforcing bars have been laid to the inside of shield constructs section of jurisdiction (3), fibre combined material panel (2) with the reinforcing bar all through mix earth with shield constructs that section of jurisdiction (3) is fixed
A T-shaped slot is formed in one end of each shield segment, a T-shaped plug-in is fixed to the other end of each shield segment, and two adjacent shield segments are connected together through the T-shaped slots and the T-shaped plug-ins in a matched mode;
the shield structure comprises a shield segment and is characterized by further comprising a steel plate, wherein the steel plate is fixed on the inner surface of the shield segment, two grooves are formed in one surface, away from the shield segment, of the steel plate, the two grooves are symmetrically formed in two sides of the steel plate, the grooves are rectangular, and threaded holes are formed in two ends of each groove in the length direction;
still include the sealing plate, the sealing plate includes plate an and two plate b, plate an's both ends all are fixed with plate b, plate an and plate b integral type are made, two plate b respectively with adjacent two steel sheets on the recess cooperatees, plate b's both ends have all been seted up and have been run through plate a's screw hole an, the bolt is worn to establish the screw hole with in the screw hole a, the both ends of sealing plate are passed through the bolt and are fixed respectively adjacent two shield structure pipe pieces are last.
By adopting the technical scheme, the fiber composite material plate enables the shield segment to have certain corrosion resistance, and the water stop plate arranged at the longitudinal joint is combined, so that the corrosion resistance of the shield segment is greatly improved, and the safety performance of the shield segment is improved. The quick splicing is realized through the cooperation of the T-shaped slot and the T-shaped plug-in, so that the splicing time and labor of the shield segment are saved, the limiting effect of the water stop plate on two adjacent shield segments is combined, the condition of offset and dislocation after splicing is avoided, and the safety performance of the shield segment is further improved.
Further, the surface of the plate a, which is contacted with the steel plate, is attached to the cambered surface of the plate.
Through adopting above-mentioned technical scheme, prevent to produce great gap between plate an and the steel sheet, lead to corrosion factor to get into and cause the corruption to the shield structure section of jurisdiction.
Further, the steel sheet includes horizontal gusset plate and vertical gusset plate, the steel sheet with the one side that the shield constructs the section of jurisdiction and contacts is fixed with a plurality of horizontal gusset plate and a plurality of vertical gusset plate, a plurality of horizontal gusset plate and a plurality of vertical gusset plate equal parallel arrangement, horizontal gusset plate with vertical gusset plate constitutes the slip casting groove, the slip casting inslot intussuseption is filled with and is connected the epoxy layer of steel sheet and shield structure section of jurisdiction.
Through adopting above-mentioned technical scheme, pack epoxy in the space between shield structure section of jurisdiction and the steel sheet, epoxy fills the slip casting inslot, makes to form between shield structure section of jurisdiction and the steel sheet sealed, can not produce the space, and epoxy's repair ability is strong simultaneously, has certain anticorrosive action, can slow down steel sheet, horizontal gusset plate and vertical gusset plate by the corrosion rate, prolongs the life of steel sheet and reinforcement skeleton.
Furthermore, the transverse reinforcing plate and the longitudinal reinforcing plate are provided with embedding holes, and the embedding connecting pieces are arranged in the embedding holes in a penetrating mode.
Through adopting above-mentioned technical scheme, through horizontal gusset plate with set up the embedding connecting piece on the vertical gusset plate, the embedding connecting piece combines with muddy earth, makes muddy earth inside inseparabler, and effectual corrosion factor's that prevents gets into makes the shield structure section of jurisdiction firmer simultaneously.
Furthermore, a plurality of exhaust holes are formed in one surface, far away from the shield segment, of the steel plate, and the exhaust holes are communicated with the grouting grooves.
Through adopting above-mentioned technical scheme, air outlet exhaust air reduces the bubble space etc. in the epoxy glue filling layer when pouring into epoxy glue filling in-process, also can discharge unnecessary epoxy glue filling simultaneously.
Further, the surface of the steel plate is sprayed with a polyurea elastomer layer.
By adopting the technical scheme, the polyurea elastomer layer has good corrosion resistance, the side of the steel plate contacting with the outside can be protected from being corroded, and the corrosion resistance of the shield segment is further improved.
The utility model has the advantages that:
a novel shield segment is characterized in that a fiber composite material plate and reinforcing steel bars are arranged in a shield segment mould, concrete is poured in the shield segment mould to form the shield segment, the fiber composite material plate is arranged on the inner surface of the shield segment mould, and the fiber composite material plate has the characteristics of light weight, corrosion resistance and good fatigue resistance, so that the shield segment has a corrosion resistance structure, and is fixed on the inner surface of the shield segment through epoxy resin;
simultaneously, still set up T type slot in the one end of shield structure section of jurisdiction, the other end is fixed with T type plug-in components, realizes quick concatenation through the cooperation of T type slot and T type plug-in components, makes the concatenation labour saving and time saving of shield structure section of jurisdiction, and the limiting displacement to two adjacent shield structure sections of combining the stagnant water board again has avoided taking place the circumstances of skew and dislocation after the concatenation, has further improved the security performance of shield structure section of jurisdiction, horizontal gusset plate with set up the embedding connecting piece on the vertical gusset plate, the muddy earth of watering again makes muddy earth inside inseparabler, and effectual the entering that prevents corrosion factor makes the shield structure more firm simultaneously.
Drawings
Fig. 1 is a schematic view of a novel shield segment structure of the present invention;
3 FIG. 32 3 is 3 a 3 cross 3- 3 sectional 3 view 3 of 3 a 3 novel 3 shield 3 segment 3 A 3- 3 A 3 of 3 the 3 present 3 invention 3; 3
Fig. 3 is a schematic structural view of a novel shield segment water stop plate of the present invention;
fig. 4 is a schematic connection diagram of a novel shield segment according to the present invention;
fig. 5 is a schematic view of a structure of a steel plate in a shield segment according to the present invention;
in the figure, 2-fiber composite material plate, 3-shield segment, 4-steel plate, 5-water stop plate, 6-embedded connecting piece, 31-T-shaped slot, 32-T-shaped plug-in piece, 41-groove, 42-threaded hole a, 43-transverse reinforcing plate, 44-longitudinal reinforcing plate, 45-grouting groove, 46-embedded hole, 47-vent hole, 51-plate a, 52-plate b.
Detailed Description
The technical solution of the present invention is described in further detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following description.
The shield method is commonly adopted in the construction of tunnel engineering, a core stress component in the shield method is a shield segment, the shield segment in the prior art does not have corrosion resistance, so that the shield segment is seriously corroded, and the safety performance of a tunnel is seriously influenced, meanwhile, when the shield segment is spliced in the prior art, the stability is poor, the installation is difficult, the annular splicing of the shield segment is time-consuming and labor-consuming, after a plurality of shield segments are spliced together, the tunnel is easy to generate offset and dislocation, so that the potential safety hazard exists in the tunnel, in order to solve the problems of the shield segment, as shown in figures 1 and 2, the application provides a novel shield segment, which comprises a fiber composite material plate (2), a shield segment (3) and a plurality of reinforcing steel bars, wherein the fiber composite material plate (2) is arranged on the bottom surface and the side surface inside the shield segment (3), and the plurality of reinforcing steel bars are laid in the shield segment (3), the fiber composite material plate (2) and the reinforcing steel bars are fixed with the shield segment (3) through concrete, one end of the shield segment (3) is provided with a T-shaped slot (31), the other end of the shield segment is fixed with a T-shaped plug-in (32), and two adjacent shield segments (3) are connected together through the T-shaped slot (31) and the T-shaped plug-in (32) in a matching manner;
according to the above, the utility model relates to a novel shield constructs technology forming process of section of jurisdiction does: firstly, fiber composite material plates 2 are arranged on the inner surface and the bottom surface of a shield segment mould, then a plurality of steel bars are laid in the shield segment mould, and finally, concrete is poured in the shield segment mould to form a shield segment 3. The fiber composite material is composed of reinforced fibers and a resin matrix, and is characterized in that the thermal expansion coefficient is similar to that of concrete, the weight is light, the corrosion resistance and the fatigue resistance are good, the fiber composite material can be used in acid, alkali, chlorine salt and humid environments at the middle stage, the influence on the performance is small, the structure of the shield segment 3 has the corrosion resistance, and the service life of the shield segment 3 is prolonged. The T-shaped slot 31 and the T-shaped plug-in piece 32 are matched to realize quick splicing, so that the splicing of the shield segment 3 is time-saving and labor-saving.
Because the joint between the adjacent segments, i.e. the longitudinal joint, along the shield direction, the joint between the adjacent segments, i.e. the circumferential joint, is easy to enter corrosion factors, which leads to serious corrosion degree, the prior art connects the annular shield segments in a staggered way, so that the joints between the adjacent segments in the shield direction are not on the same straight line, thereby avoiding the corrosion at the circumferential joint, but no better solution exists in the prior art for the longitudinal joint, the corrosion factors on the ground are easy to enter from the longitudinal joint of the inner ring of the shield segments, thereby leading to the corrosion of the shield segments, although the shield segments 3 have the corrosion resistance by the structure, the existence of the longitudinal joint leads to unobvious corrosion resistance effect of the shield segments 3, the corrosion resistance of the shield segments 3 can not be greatly improved, and the matching of the T-shaped slots 31 and the T-shaped inserts 32 does not limit the adjacent two shield segments 3, make take place skew and dislocation after the concatenation, for solving this problem, this application has still designed following structure:
as shown in fig. 3 to 5, the shield segment further includes a steel plate 4, the steel plate 4 is fixed on the inner surface of the shield segment 3, two grooves 41 are formed in one surface of the steel plate 4 away from the shield segment 3, the two grooves 41 are symmetrically arranged on two sides of the steel plate 4, the grooves 41 are rectangular, and threaded holes 42 are formed in two ends of each groove 41 in the length direction;
still include stagnant water board 5, stagnant water board 5 includes plate a51 and two plates b52, plate b52 all is fixed with at the both ends of plate a51, plate a51 and plate b52 integral type are made, two plate b52 cooperate with the recess 41 on two adjacent steel sheets 4 respectively, the screw hole an that runs through plate a51 is all seted up at the both ends of plate b52, the bolt is worn to establish in screw hole 42 and screw hole an, the both ends of stagnant water board 5 are passed through the bolt and are fixed respectively on two adjacent shield pipes 3, the one side that plate a51 and steel sheet 4 contacted is laminated with the cambered surface of plate 4 mutually.
Plate b52 on the stagnant water board 5 matches with recess 41 and merges and pass through the bolt fastening, make more stable connection of stagnant water board 5 on steel sheet 4, the one side that plate an 51 and steel sheet 4 contacted simultaneously is laminated with the cambered surface of plate 4 mutually, stagnant water board 5 is located two adjacent shield structure section of jurisdiction 3's longitudinal joint department, stagnant water board 5 has effectually prevented that external water and corrosion factor from entering into shield structure section of jurisdiction 3 from longitudinal joint department, stagnant water board 5 combines together with the anticorrosive structure of shield structure section of jurisdiction 3 self, great improvement shield structure section of jurisdiction 3's waterproof nature, steel sheet 4 has higher intensity simultaneously, the life of shield structure section of jurisdiction 3 has been increased, and the safety performance is improved. Realize quick concatenation through the cooperation of T type slot 31 and T type plug-in components 32, make the concatenation labour saving and time saving of shield section of jurisdiction 3, reunion stagnant water board 5 is to the limiting displacement of two adjacent shield sections of jurisdiction 3, has avoided taking place the condition of skew and dislocation after the concatenation, has further improved the security performance of shield section of jurisdiction 3. Although the intensity that shield constructs section of jurisdiction 3 can be improved to steel sheet 4, nevertheless steel sheet 4 corrosion resistance is poor, easily is corroded to reduced shield and constructed section of jurisdiction 3 intensity, for overcoming this problem, following design has still been done to this application:
the surface of the steel plate 4 is sprayed with a polyurea elastomer layer, and the polyurea elastomer spraying is a novel universal coating technology and is also an environment-friendly coating technology which is internationally advocated. The solvent-free and pollution-free green spraying construction technology is the latest development of a structural waterproof technology, and effectively simplifies the design layer number of the waterproof structure and reduces the thickness by virtue of the advantages of environmental protection, chemical corrosion resistance, high strength, high impermeability, wear resistance, good thermal stability, flexibility, impact resistance, no seam, strong adhesion with concrete and the like. The side of the steel plate 4 contacting with the outside can be protected from corrosion, and the corrosion resistance of the shield segment 3 is further improved.
According to the aforesaid, steel sheet 4 can adopt multiple mode with the fixed mode of shield structure section of jurisdiction 3, if use muddy earth to fix, nevertheless for further improvement shield structure section of jurisdiction 3's corrosion resistance, improve the tightness of shield structure section of jurisdiction 3 simultaneously, this application adopts following mode to fix steel sheet 4:
the steel plate 4 comprises a transverse reinforcing plate 43 and a longitudinal reinforcing plate 44, a plurality of transverse reinforcing plates 43 and a plurality of longitudinal reinforcing plates 44 are fixed on one surface of the steel plate 4, which is in contact with the shield segment 3, the transverse reinforcing plates 43 and the longitudinal reinforcing plates 44 are arranged in parallel, the transverse reinforcing plates 43 and the longitudinal reinforcing plates 44 form a grouting groove 45, and an epoxy resin layer for connecting the steel plate 4 and the shield segment 3 is filled in the grouting groove 45;
the transverse reinforcing plate 43 and the longitudinal reinforcing plate 44 are both provided with embedding holes 46, and the embedding holes 46 are both provided with embedded connecting pieces 6 in a penetrating way;
a plurality of exhaust holes 47 are formed in one surface, far away from the shield segment 3, of the steel plate 4, the exhaust holes 47 are communicated with the grouting groove 45, air exhausted from the exhaust holes 47 in the epoxy potting adhesive filling process is reduced to form air bubbles in the epoxy potting adhesive layer, and meanwhile, redundant epoxy potting adhesive can be discharged.
This application adopts epoxy to fix steel sheet 4 on shield section of jurisdiction 3, fills in the slip casting inslot with epoxy, makes to form between shield section of jurisdiction 3 and the steel sheet 4 sealedly, can not produce the space, and epoxy's repair ability is strong simultaneously, has certain anticorrosive effect, can slow down steel sheet 4, horizontal gusset plate 43 and vertical gusset plate 44 by the corrosion rate, prolongs steel sheet 4, horizontal gusset plate 43 and vertical gusset plate 44's life. Simultaneously, in order to improve the tightness of shield structure section of jurisdiction 3, still be provided with a plurality of embedding connecting pieces 6, through at horizontal gusset plate 43 with set up embedding connecting piece 6 on the vertical gusset plate 44, make muddy earth inside inseparabler, the effectual entering that prevents corrosion factor makes shield structure section of jurisdiction 3 firmer simultaneously.
The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein, and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the invention as defined by the appended claims. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.
Claims (6)
1. The novel shield segment is characterized by comprising a fiber composite material plate (2), a shield segment (3) and a plurality of steel bars, wherein the fiber composite material plate (2) is arranged on the bottom surface and the side surface of the inside of the shield segment (3), the steel bars are laid in the shield segment (3), and the fiber composite material plate (2) and the steel bars are fixed with the shield segment (3) through concrete;
one end of each shield segment (3) is provided with a T-shaped slot (31), the other end of each shield segment is fixed with a T-shaped plug-in (32), and two adjacent shield segments (3) are connected with the T-shaped plug-in (32) through the T-shaped slots (31) in a matched mode;
the shield structure is characterized by further comprising a steel plate (4), wherein the steel plate (4) is fixed on one side of the shield segment (3) with the small diameter, two grooves (41) are formed in one side, away from the shield segment (3), of the steel plate (4), the two grooves (41) are symmetrically arranged on two sides of the steel plate (4), the grooves (41) are rectangular, and threaded holes (42) are formed in two ends of each groove (41) in the length direction;
still include stagnant water board (5), stagnant water board (5) include plate a (51) and plate b (52), the both ends of plate a (51) all are fixed with plate b (52), plate a (51) and plate b (52) integral type are made, two plate b (52) respectively with two adjacent steel sheet (4) on recess (41) cooperate, the both ends of plate b (52) are all seted up and are run through the screw hole an of plate a (51), the bolt is worn to establish screw hole (42) with in the screw hole a, the both ends of stagnant water board (5) are passed through the bolt and are fixed respectively adjacent two shield constructs on section of jurisdiction (3).
2. The shield segment of claim 1, wherein the surface of the plate a (51) contacting the steel plate (4) is in contact with the cambered surface of the steel plate (4).
3. The novel shield segment of claim 1, wherein the steel plate (4) comprises a plurality of transverse reinforcing plates (43) and a plurality of longitudinal reinforcing plates (44), the surface of the steel plate (4) contacting the shield segment (3) is fixed with the plurality of transverse reinforcing plates (43) and the plurality of longitudinal reinforcing plates (44), the plurality of transverse reinforcing plates (43) and the plurality of longitudinal reinforcing plates (44) are arranged in parallel, the transverse reinforcing plates (43) and the longitudinal reinforcing plates (44) form a grouting groove (45), and the grouting groove (45) is filled with an epoxy resin layer connecting the steel plate (4) and the shield segment (3).
4. The novel shield segment of claim 3, wherein the transverse reinforcing plate (43) and the longitudinal reinforcing plate (44) are provided with embedding holes (46), and embedding connectors (6) are arranged in the embedding holes (46).
5. The novel shield segment of claim 4, wherein a plurality of exhaust holes (47) are formed in the side, away from the shield segment (3), of the steel plate (4), and the exhaust holes are communicated with the grouting groove (45).
6. The novel shield segment of claim 1, wherein the surface of said steel plate (4) is coated with a polyurea elastomer layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921608060.6U CN210564554U (en) | 2019-09-25 | 2019-09-25 | Novel shield constructs section of jurisdiction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921608060.6U CN210564554U (en) | 2019-09-25 | 2019-09-25 | Novel shield constructs section of jurisdiction |
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| CN210564554U true CN210564554U (en) | 2020-05-19 |
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| CN201921608060.6U Active CN210564554U (en) | 2019-09-25 | 2019-09-25 | Novel shield constructs section of jurisdiction |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112796776A (en) * | 2021-02-09 | 2021-05-14 | 山东大学 | Shield tunnel segment structure and construction method thereof |
| CN113217016A (en) * | 2021-05-26 | 2021-08-06 | 中安华力建设集团有限公司 | Simulation system and simulation method for tunnel shield construction and segment installation quality control |
| CN113279788A (en) * | 2021-06-10 | 2021-08-20 | 北京市政建设集团有限责任公司 | Novel steel negative ring pipe structure for shield construction |
-
2019
- 2019-09-25 CN CN201921608060.6U patent/CN210564554U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112796776A (en) * | 2021-02-09 | 2021-05-14 | 山东大学 | Shield tunnel segment structure and construction method thereof |
| US11965420B2 (en) | 2021-02-09 | 2024-04-23 | Shandong University | Shield tunnel segment structure and construction method thereof |
| CN113217016A (en) * | 2021-05-26 | 2021-08-06 | 中安华力建设集团有限公司 | Simulation system and simulation method for tunnel shield construction and segment installation quality control |
| CN113279788A (en) * | 2021-06-10 | 2021-08-20 | 北京市政建设集团有限责任公司 | Novel steel negative ring pipe structure for shield construction |
| CN113279788B (en) * | 2021-06-10 | 2022-07-22 | 北京市政建设集团有限责任公司 | Novel steel negative ring pipe structure for shield construction |
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