CN217481292U

CN217481292U - Shield segment

Info

Publication number: CN217481292U
Application number: CN202221232433.6U
Authority: CN
Inventors: 田行宇; 李志光; 席梦新; 王亚楠; 刘颖; 张瑜; 赵一; 李克飞
Original assignee: Beijing Construction Engineering New Building Materials Technology Co ltd; Beijing MTR Construction Administration Corp
Current assignee: Beijing Construction Engineering New Building Materials Technology Co ltd; Beijing MTR Construction Administration Corp
Priority date: 2022-05-19
Filing date: 2022-05-19
Publication date: 2022-09-23
Anticipated expiration: 2032-05-19

Abstract

The utility model relates to a tunnel construction technical field provides a shield constructs section of jurisdiction. Wherein, the shield constructs the section of jurisdiction, includes: a concrete body; the grouting spiral pipe is pre-embedded in the concrete main body, and a feed inlet of the grouting spiral pipe is arranged on the concave side of the concrete main body; the spiral rib is embedded in the concrete body and sleeved outside the grouting spiral pipe; the slip casting straight tube is pre-buried in the concrete main part to be connected with the one end that the feed inlet was kept away from to the slip casting spiral tube, the one end that the slip casting spiral tube was kept away from to the slip casting straight tube is equipped with the shrouding. The utility model provides a shield constructs section of jurisdiction establishes the spiral muscle through the outside cover at the slip casting spiral pipe, can improve the anchoring strength of slip casting spiral pipe and concrete to avoid the slip casting spiral pipe to be extracted.

Description

Shield segment

Technical Field

The utility model relates to a tunnel construction technical field especially relates to a shield constructs section of jurisdiction.

Background

In the prior art, the grouting pipe of the shield segment is usually in a direct insertion mode, and the grouting pipe is easily pulled out under the conditions that concrete is not compacted due to vibration and the like due to the adoption of the composite tooth grouting head. Therefore, it is needed to solve the problem that the grouting pipe is easy to pull out in the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model provides a shield constructs section of jurisdiction for solve the defect that grout pipe extracted easily in the prior art, realize improving the effect of grout pipe anchor performance.

The utility model provides a shield constructs section of jurisdiction, include:

a concrete body;

the grouting spiral pipe is pre-embedded in the concrete main body, and a feed inlet of the grouting spiral pipe is arranged on the concave side of the concrete main body;

the spiral rib is pre-embedded in the concrete main body and sleeved outside the grouting spiral pipe;

and the grouting straight pipe is pre-buried in the concrete main body and is connected with one end, far away from the feeding hole, of the grouting spiral pipe, and a sealing plate is arranged at one end, far away from the grouting spiral pipe, of the grouting straight pipe.

According to the utility model provides a pair of shield constructs section of jurisdiction, the slip casting straight tube with the slip casting spiral pipe cup joints the connection each other.

According to the utility model provides a pair of shield constructs section of jurisdiction, the slip casting straight tube with be equipped with the sealing member between the slip casting spiral pipe.

According to the utility model provides a pair of shield constructs section of jurisdiction, the axial terminal surface pre-buried steel sheet that has of concrete body.

According to the utility model provides a pair of shield constructs section of jurisdiction, the quantity of slip casting spiral pipe sets up to at least two, and at least one the outside cover of slip casting spiral pipe is equipped with the spiral muscle.

According to the utility model provides a pair of shield constructs section of jurisdiction still includes the check valve, the check valve set up in the slip casting spiral pipe is kept away from the one end of feed inlet and with slip casting spiral pipe screw-thread fit.

According to the utility model provides a pair of shield constructs section of jurisdiction still includes the slip casting stopcock, the slip casting stopcock set up in the feed inlet and with slip casting spiral pipe screw-thread fit.

According to the utility model provides a pair of shield constructs section of jurisdiction, slip casting stopcock with be equipped with the sealing member between the slip casting pipe.

According to the utility model provides a pair of shield constructs section of jurisdiction still includes T shape channel, T shape channel pre-buried in concrete body, and the notch orientation of T shape channel concrete body's indent side.

According to the utility model provides a pair of shield constructs section of jurisdiction still includes the stock, the stock pre-buried in concrete body, and the stock with the tank bottom of T shape channel is connected.

The utility model provides a shield constructs section of jurisdiction establishes the spiral muscle through the outside cover at the slip casting spiral pipe, can improve the anchor intensity of slip casting spiral pipe and concrete to avoid the slip casting spiral pipe to be extracted.

Drawings

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

Fig. 1 is a schematic structural diagram of a first shield segment provided in an embodiment of the present invention;

FIG. 2 is a sectional view A-A of FIG. 1;

FIG. 3 is a schematic view showing the construction of the grouting spiral pipe of FIG. 2;

fig. 4 is a schematic structural diagram of a second shield segment provided in an embodiment of the present invention;

fig. 5 is a schematic view of the connection of the T-shaped channel to the anchor rod of fig. 4.

Reference numerals:

1. a concrete body; 2. grouting a spiral pipe; 3. a concave side; 4. a spiral rib; 5. grouting a straight pipe; 6. a seal member; 7. a steel plate; 8. a non-return valve; 9. closing the plate; 10. a T-shaped channel; 11. an anchor rod; 12. grouting a pipe plug; 13. and (4) anchoring the rod.

Detailed Description

To make the objects, technical solutions and advantages of the present invention clearer, the drawings of the present invention are combined to clearly and completely describe the technical solutions of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The shield segment provided in the embodiment of the present invention is described below with reference to fig. 1 to 5.

Specifically, the shield segment comprises a concrete body 1, a grouting spiral pipe 2, a spiral rib 4 and a grouting straight pipe 5.

Wherein the concrete body 1 is made by casting.

Grouting spiral pipe 2 is pre-buried in concrete body 1, and grouting spiral pipe 2's feed inlet sets up in concrete body 1's indent side 3.

The spiral ribs 4 are pre-embedded in the concrete body 1 and sleeved outside the grouting spiral pipe 2. The spiral rib 4 extends spirally along the axial direction of the grouting spiral pipe 2.

Grouting straight tube 5 is pre-buried in concrete body 1 to be connected with the one end that grouting spiral tube 2 kept away from the feed inlet, the one end that grouting spiral tube 2 was kept away from to grouting straight tube 5 is equipped with shrouding 9. The one end that slip casting spiral pipe 2 was kept away from to slip casting straight tube 5 has the concrete of predetermineeing thickness apart from the evagination side of concrete main part 1 to when needs are consolidated the stratum of the evagination side of shield structure section of jurisdiction, then will the concrete of predetermineeing thickness is worn through, and carries out the slip casting through slip casting spiral pipe 2. One end of the grouting spiral pipe 2 is far away from the grouting straight pipe 5, the sealing plate 9 is arranged, the sealing plate 9 and concrete can be perforated simultaneously when grouting is needed, the thickness of the concrete needing to be perforated can be reduced, the construction difficulty is reduced, and the construction efficiency is improved simultaneously.

The embodiment of the utility model provides a shield constructs section of jurisdiction, establishes spiral muscle 4 through the outside cover at slip casting spiral pipe 2, can improve the anchoring strength of slip casting spiral pipe 2 and concrete to avoid slip casting spiral pipe 2 to be extracted.

To the greasy dirt condition on slip casting spiral pipe surface, concrete intensity, whether vibrate and whether set up the tendency of spiral muscle to slip casting spiral pipe bond stress, do as follows contrast test:

based on the above test results, it can be seen that, after the spiral ribs 4 are added, the drawing force that the grouting spiral pipe 2 can bear is all above 220KN, and the design requirements can be met.

Referring to fig. 3, in some embodiments of the present invention, the grouting straight pipe 5 and the grouting spiral pipe 2 are connected to each other in a sleeved manner. For example, the grouting straight pipe 5 is sleeved outside the grouting spiral pipe 2. So set up, the connection structure between slip casting straight tube 5 and slip casting spiral pipe 2 is simpler.

Referring to fig. 3, in some embodiments of the present invention, a sealing member 6 is disposed between the grouting straight pipe 5 and the grouting spiral pipe 2. The sealing element 6 is arranged to prevent the water seepage of the slurry or soil body after grouting, and the gap between the grouting straight pipe 5 and the grouting spiral pipe 2 enters the grouting spiral pipe 2 and permeates the tunnel.

Referring to fig. 2, in some embodiments provided by the present invention, the steel plate 7 is embedded in the end face of the concrete body 1 in the axial direction. For example, a shield segment pre-embedded with steel plates 7 may be placed at the shield entrance of the tunnel with the steel plates 7 towards the outside of the tunnel. Further, the shield segment further comprises an anchoring rod 13, wherein the anchoring rod 13 is embedded in the concrete main body 1 and is connected with the steel plate 7 in a welding mode, and the anchoring performance of the steel plate 7 and the concrete main body 1 is improved.

Referring to fig. 1, in some embodiments provided by the present invention, the number of the grouting spiral pipes 2 is set to be at least two, and the outer sleeve of at least one grouting spiral pipe 2 is provided with a spiral rib 4. Through setting up a plurality of slip casting spiral pipes 2, can shield the dorsal cavity position of section of jurisdiction as required, utilize the slip casting spiral pipe 2 that is close to the cavity to carry out the slip casting to consolidate the soil layer. And only need set up spiral muscle 4 in the slip casting spiral pipe 2 outside that has the hoist and mount effect, can reduce the manufacturing cost of shield structure section of jurisdiction, simplify the structure of shield structure section of jurisdiction.

Referring to fig. 3, in some embodiments provided by the present invention, the shield segment further includes a check valve 8, the check valve 8 is disposed at one end of the grouting spiral pipe 2 away from the feeding port and is in threaded fit with the grouting spiral pipe 2. After grouting, the check valve 8 is screwed into the grouting spiral pipe 2 to prevent grout or water seepage from entering the grouting spiral pipe 2 from the grouting straight pipe 5.

The utility model provides an in some embodiments, the shield constructs the section of jurisdiction and still includes slip casting stopcock 12, slip casting stopcock 12 set up in the feed inlet and with 2 screw-thread fit of slip casting spiral pipe. Through setting up slip casting stopcock 12, after the tunnel shaping, can utilize slip casting stopcock 12 to seal slip casting spiral pipe 2 to improve the prevention of seepage performance of shield structure section of jurisdiction. Further, a sealing member 6 is arranged between the grouting pipe plug 12 and the grouting spiral pipe 2, so that the sealing performance between the grouting pipe plug 12 and the grouting spiral pipe 2 is improved.

Referring to fig. 4 and 5, in some embodiments provided by the present invention, the shield segment further includes a T-shaped channel 10, the T-shaped channel 10 is pre-embedded in the concrete body 1, and the notch of the T-shaped channel 10 faces the concave side 3 of the concrete body 1. Through setting up T type channel 10, can penetrate T type bolt in T type channel 10 to T type bolt can slide in T type channel 10, thereby can be through T type bolt and T type channel 10, conveniently be fixed in on the inner wall of shield structure section of jurisdiction with other parts.

Referring to fig. 4 and 5, in some embodiments provided by the present invention, the shield segment further includes an anchor rod 11. The anchor rod 11 is pre-buried in the concrete main part 1 to the anchor rod 11 is connected with the tank bottom of T-shaped channel 10. By the arrangement, the anchoring strength of the T-shaped channel 10 and the concrete body 1 can be improved, and the anti-pulling performance of the T-shaped channel 10 is improved.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A shield segment, comprising:

a concrete body;

the grouting spiral pipe is pre-buried in the concrete main body, and a feeding hole of the grouting spiral pipe is formed in the concave side of the concrete main body;

2. The shield segment of claim 1, wherein the straight grouting pipe and the spiral grouting pipe are connected in a sleeved manner.

3. The shield segment of claim 2, wherein a seal is disposed between the straight grouting pipe and the spiral grouting pipe.

4. The shield segment of claim 1, wherein steel plates are embedded in the axial end faces of the concrete body.

5. The shield segment of claim 1, wherein the number of the grouting spirals is set to at least two, and the spiral rib is sleeved outside at least one of the grouting spirals.

6. The shield segment of claim 1, further comprising a check valve disposed at an end of the grouting spiral tube remote from the feed inlet and in threaded engagement with the grouting spiral tube.

7. The shield segment of claim 1, further comprising a grouting pipe plug disposed at the feed inlet and in threaded engagement with the grouting spiral pipe.

8. The shield segment of claim 7, wherein a seal is disposed between the slip pipe plug and the slip pipe.

9. The shield segment of claim 1, further comprising a T-shaped channel pre-embedded in the concrete body with a notch of the T-shaped channel facing a concave side of the concrete body.

10. The shield segment of claim 9, further comprising anchor rods pre-embedded in the concrete body and connected to the trough bottom of the T-shaped channel.