CN116607976A - Combined structure for shield reception and receiving method - Google Patents
Combined structure for shield reception and receiving method Download PDFInfo
- Publication number
- CN116607976A CN116607976A CN202310647863.7A CN202310647863A CN116607976A CN 116607976 A CN116607976 A CN 116607976A CN 202310647863 A CN202310647863 A CN 202310647863A CN 116607976 A CN116607976 A CN 116607976A
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- shield
- station
- steel sleeve
- main body
- type steel
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- 238000000034 method Methods 0.000 title claims description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 67
- 239000010959 steel Substances 0.000 claims abstract description 67
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims abstract description 51
- 235000017491 Bambusa tulda Nutrition 0.000 claims abstract description 51
- 241001330002 Bambuseae Species 0.000 claims abstract description 51
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims abstract description 51
- 239000011425 bamboo Substances 0.000 claims abstract description 51
- 230000005641 tunneling Effects 0.000 claims abstract description 30
- 230000003014 reinforcing effect Effects 0.000 claims description 22
- 238000010276 construction Methods 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims 3
- 230000002787 reinforcement Effects 0.000 abstract description 4
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 239000002689 soil Substances 0.000 description 4
- 239000004568 cement Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
Classifications
-
- 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
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
- E21D11/20—Special cross- sections, e.g. corrugated
-
- 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
-
- 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
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
-
- 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
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
-
- 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
- E21D9/001—Improving soil or rock, e.g. by freezing; Injections
-
- 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
- E21D9/02—Driving inclined tunnels or galleries
-
- 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
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
-
- 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
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/0607—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining the shield being provided with devices for lining the tunnel, e.g. shuttering
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention provides a shield receiving combined structure which is arranged on a station main body structure and comprises a bamboo cutting type steel sleeve, wherein the bamboo cutting type steel sleeve is obliquely arranged on the inner wall of a side wall of the station main body structure, a hole door is formed at the joint of the bamboo cutting type steel sleeve and the side wall, and the hole door is abutted with the bamboo cutting type steel sleeve and has the same size; the invention solves the problems of difficult tunneling and large unidirectional stress of a cutter head during receiving, and ensures that a cutter head panel is in plane contact with the end enclosure structure and the trapezoid reinforcement area formed by the peripheral plain concrete piles, thereby uniformly stressed cutting the enclosure structure, ensuring that the cutter head is stressed uniformly, avoiding damage and improving the success rate of shield receiving.
Description
Technical Field
The invention relates to the technical field of tunnel engineering, in particular to a shield receiving combined structure and a receiving method.
Background
With the large-scale construction of a tunnel by a shield method, shield safety receiving is one of key links and important risk sources of engineering construction, and conventional shield receiving is performed in a horizontal direction, but under some working conditions, the oblique shield receiving is more suitable in consideration of the problems of difficult tunneling and stress after receiving, the related structure and method of the oblique shield receiving are lacked in the prior art, no standard is formed, and the shield tunneling axis is extremely easy to be prevented from being vertical to a receiving end wall in construction; the cutter head panel and the end enclosure structure cannot form plane contact, so that the enclosure structure is uniformly stressed and cut; because of lack of guidance of the shield receiving combined structure, if the shield tunneling axis is not perpendicular to the end wall, the shield tunneling axis is in non-planar contact with the enclosure structure, and uneven stress on the cutterhead causes deflection and torsion of the attitude of the shield machine, even damage to the cutterhead and the cutter, and the shield receiving failure can be caused when serious. Therefore, the requirement of the included angle between the shield tunneling axis and the end wall body limits the line design of the shield tunnel and the arrangement of the shield receiving end, and greatly restricts the realization and optimization of the tunnel line selection scheme.
The receiving method provided in the prior art does not provide shield oblique receiving conditions, so that the method cannot adapt to oblique receiving and has the characteristics of increasing the flexibility of shield tunnel linetype and receiving end arrangement.
Disclosure of Invention
Aiming at the problems in the background technology, the combined structure for shield reception realizes oblique shield reception, and solves the problems that a guide structure for shield reception is lacking in the prior art, and cutter disc damage and tunneling difficulty are easy to cause in construction.
The invention provides a shield receiving combined structure which is arranged on a station main body structure, wherein the station main body structure comprises a station bottom plate, a station main body structure side wall and a station middle plate, and the shield receiving combined structure is characterized by comprising a bamboo cutting type steel sleeve, wherein the bamboo cutting type steel sleeve is obliquely arranged on the inner wall of the station main body structure side wall, the inclination angle is smaller than 90 degrees, a tunnel portal is formed at the joint of the bamboo cutting type steel sleeve and the station main body structure side wall, and the tunnel portal is abutted with the bamboo cutting type steel sleeve and has the same size; a station enclosure structure is additionally arranged outside the side wall of the station main body structure, the outer side of the station enclosure structure is reinforced by plain concrete piles to form a trapezoid reinforced area, the outer edge end face of the trapezoid reinforced area is perpendicular to the shield tunneling central axis, and the inner edge end face of the trapezoid reinforced area is parallel to the station enclosure structure; the central axis of the bamboo cutting type steel sleeve coincides with the central axis of the shield tunneling so as to realize shield oblique receiving.
Furthermore, an embedded steel ring plate is arranged along the periphery of the tunnel portal, and the joint of the bamboo cutting type steel sleeve and the side wall inner wall of the station main body structure is closely attached through the embedded steel ring plate in a welding mode.
Further, the diameter of the plain concrete pile is 1m, and the engagement between piles is 200mm; and when the shield machine is driven into the trapezoid reinforcing area, the shield machine is enveloped by the upper bottom surface and the lower bottom surface of the trapezoid reinforcing area, and the depth of the trapezoid reinforcing area is 3m above the tunnel arch top to 3m below the tunnel bottom.
Further, the bamboo cutting type steel sleeve is composed of a rear end cover, a cylinder body and a bamboo cutting type end face.
The invention also provides a shield receiving method, which uses the shield receiving combined structure and comprises the following steps:
s1, constructing a main body structure of a station;
s2, constructing plain concrete piles after the construction of the station main body structure is completed and before the shield construction, and forming a trapezoid reinforcing area;
s3, installing a bamboo cutting type steel sleeve before shield receiving;
s4, detecting tightness of the bamboo cutting type steel sleeve;
s5, cutting the plain concrete pile and the station enclosure structure, performing shield receiving, and obliquely entering a bamboo cutting type steel sleeve by a shield machine;
s6, splicing segments at the tail of the shield and reinforcing synchronous grouting during shield receiving, and releasing pressure and disassembling the steel sleeve after water is injected into the tunnel portal through grouting, so that shield oblique receiving work is completed.
Further, the step S1 of constructing the main structure of the station specifically includes:
s11, constructing a station enclosure structure;
s12, pouring a station bottom plate, a station main body structure side wall and a ring beam frame, and pre-burying a pre-buried steel ring plate during pouring construction of a station main body structure end wall to form a portal on the inner side of the steel ring plate;
s12, pouring the station middle plate.
Furthermore, the bamboo cutting type steel sleeve is obliquely arranged on the inner wall of the side wall of the main body structure of the station, is abutted with the tunnel portal and has the same size; the outer edge end face of the trapezoid reinforcing area is perpendicular to the shield tunneling central axis, and the shield tunneling central axis coincides with the central axis of the bamboo cutting type steel sleeve.
The shield receiving combined structure and the receiving method have the following technical advantages:
(1) The combined structure and the method for shield reception realize oblique shield reception, use a bamboo cutting type steel sleeve to bear a shield machine, design a combined structure of a hole, a plain concrete pile and an enclosure structure, and solve the problems of difficult tunneling and large unidirectional stress of a shield cutter head during reception.
(2) In the combined structure for shield reception, the shield tunneling axis and the receiving end (trapezoid reinforcing area) are kept vertical in construction; the cutter head panel and the receiving end (trapezoid reinforcing area) form plane contact, so that the enclosure structure is uniformly cut by stress; the invention relates to guiding of a shield receiving combined structure, the outer edge of a trapezoid reinforcing area is in vertical relation with a shield tunneling axis, the shield tunneling axis and a receiving end wall body can be free from being vertical, namely a cutter head panel and an end enclosure structure are free from being parallel, so that oblique receiving (without being vertical) of a shield at any angle is realized, the cutter head is uniformly stressed, damage is avoided, the shield receiving success rate is improved, and the attitude of a shield machine is controllable.
(3) The strength of the trapezoid reinforced area formed by the plain concrete pile is far greater than that of an undisturbed soil body, and the strength of the trapezoid reinforced area is higher than that of a conventional jet grouting pile and a cement soil pile, so that the stability of an end stratum during shield receiving can be better ensured; meanwhile, the strength grade can be adjusted, the strength is controlled more accurately, the strength of the concrete pile is equal to the strength of the building envelope of the station, the strength change is reduced when the shield machine enters in a cutting mode, the parameter fluctuation of the shield machine is small, and the attitude of the shield machine is easy to control. The annular inner wall of the tunnel portal is embedded, a safe and reliable steel sleeve connecting interface is provided, and a closed and safe receiving space is formed.
Drawings
FIG. 1 is a plan view of a shield receiving assembly of the present invention;
FIG. 2 is a view in direction A of FIG. 1;
FIG. 3 is a view in the direction B of FIG. 1;
FIG. 4 is a view of the shield of FIG. 1 in the C direction prior to receiving;
FIG. 5 is a view in the direction C after shield reception in FIG. 1;
in the figure: 101. receiving a contour line of a front shield machine; 102. shield segments; 103. a station enclosure; 104. side walls of the main body structure of the station; 105. end wall of station main body structure; 106. station middle plate; 107. a ring frame beam; 108. a station bottom plate; 109. a tunnel portal; 201. cutting a bamboo type steel sleeve; 202. a plain concrete pile; 203. pre-burying a steel ring plate; 204. grouting pipe; 205. a trapezoidal reinforcement region; 206. and receiving the contour line of the shield tunneling machine.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only one embodiment of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment provides a combined structure for shield reception, provides shield oblique reception conditions, is combined with the accompanying drawings from 1 to 3, is arranged on a station main body structure, and can smoothly tunnel a shield machine and safely receive when a shield tunneling axis and an end wall body are obliquely crossed, and the design principle of the invention is as follows: a steel sleeve is arranged on the inner wall of a station main body structure (a station main body structure end wall 105), a trapezoid reinforcing area is arranged on the outer part of the station main body structure (a station enclosure structure 103), a shield machine is ensured to be opposite to the trapezoid reinforcing area and inserted into the steel sleeve in the station main body structure, and referring to fig. 1-3, fig. 1 is a plan view of a shield receiving combined structure, fig. 2 is a view in the direction A in fig. 1, fig. 3 is a view in the direction B in fig. 1, the combined structure of the embodiment is arranged on the station main body structure, the station main body structure comprises a station bottom plate 108, a station main body structure side wall 104 and a station middle plate 106, the shield receiving combined structure comprises a bamboo cutting type steel sleeve 201, the bamboo cutting type steel sleeve 201 is obliquely arranged on the inner wall of the station main body structure side wall 104, the inclination angle is smaller than 90 DEG, a hole 109 is formed at the joint of the bamboo cutting type steel sleeve 201, and the hole 109 is abutted against the bamboo cutting type steel sleeve 201 and has the same size; a station building envelope 103 is additionally arranged outside the station main body structure side wall 104, the outer side of the station building envelope 103 is reinforced by plain concrete piles 202 to form a trapezoid reinforced area 205, the outer edge end face of the trapezoid reinforced area 205 is perpendicular to the shield tunneling central axis, and the inner edge end face is parallel to the station building envelope 103; the central axis of the bamboo cutting type steel sleeve 201 coincides with the central axis of the shield tunneling to realize shield oblique receiving.
An embedded steel annular plate 203 is arranged along the periphery of the tunnel portal 109, and the connection part of the bamboo cutting type steel sleeve 201 and the inner wall of the side wall 104 of the station main body structure is tightly welded by the embedded steel annular plate 203 and is used for sealing the tunnel portal 109 in a ring-mounted manner and fixing the bamboo cutting type steel sleeve 201.
Plain concrete piles 202 have a diameter of 1m and an inter-pile bite of 200mm; when the shield machine is driven into the trapezoid reinforced area 205, the shield machine is enveloped by the upper bottom surface and the lower bottom surface of the trapezoid reinforced area 205, and the depth of the trapezoid reinforced area 205 is 3m above the tunnel arch top to 3m below the tunnel bottom.
The bamboo cutting type steel sleeve 201 is composed of a rear end cover, a cylinder body and a bamboo cutting type end face, wherein the bamboo cutting type end face is a bamboo pole similar to oblique cutting, the end face is abutted against the inner wall of the side wall 104 of the station main body structure, and the rear end cover can be in an arc-shaped design. Referring to fig. 1, fig. 4 and fig. 5 are respectively a view of a shield in the direction of C before receiving and a view of a shield in the direction of C after receiving, in the tunneling process of the shield machine, the shield machine at the front end of a shield segment 102 is finally received by a bamboo cutting type steel sleeve 201, and finally the contour line 101 of the shield machine before receiving corresponds to the contour line 206 of the shield machine after receiving in the bamboo cutting type steel sleeve 201, after receiving, grouting is performed through a grouting pipe 204 at a trapezoid reinforcing area 205, so as to provide grouting sealing water stopping function, namely, after grouting, groundwater outside a station can be prevented from flowing into the station through a gap between the outer wall of the shield segment 102 and the inner wall of a pre-buried steel ring plate 203, and the purpose of interface water stopping is achieved.
The embodiment also provides a shield receiving method, which uses the shield receiving combined structure and comprises the following steps:
s1, constructing a main body structure of a station;
s2, constructing plain concrete piles 202 after the construction of the station main body structure is completed and before the shield construction, and forming a trapezoid reinforcement area 205;
s3, installing a bamboo cutting type steel sleeve 201 before shield receiving;
s4, detecting tightness of the bamboo cutting type steel sleeve 201;
s5, cutting the plain concrete pile 202 and the station enclosure structure 103, performing shield receiving, and obliquely entering a bamboo cutting type steel sleeve 201 by a shield machine;
s6, splicing segments at the tail of the shield and reinforcing synchronous grouting during shield receiving, and performing decompression and disassembly on the bamboo cutting type steel sleeve 201 after water is injected into the tunnel portal 109 through grouting, so that shield oblique receiving work is completed.
Step S1, constructing a station main body structure specifically comprises the following steps:
s11, constructing a station enclosure structure;
s12, pouring a station bottom plate, a station main body structure side wall and a ring beam frame, and pre-burying a pre-buried steel ring plate during pouring construction of a station main body structure end wall to form a portal on the inner side of the steel ring plate;
s13, pouring the station middle plate.
The bamboo cutting type steel sleeve 201 is obliquely arranged on the inner wall of the side wall 104 of the station main body structure, is abutted with the tunnel portal 109 and has the same size; the outer edge end face of the trapezoid reinforcement area 205 is perpendicular to the shield tunneling central axis, and the shield tunneling central axis coincides with the central axis of the bamboo cutting type steel sleeve 201.
The combined structure and the method for shield reception realize oblique shield reception, use the bamboo cutting type steel sleeve 201 to bear the shield machine, design the combined structure of the hole 109, the plain concrete pile and the enclosure structure, and solve the problems of difficult tunneling and large unidirectional stress of the shield cutterhead during reception.
In the combined structure for shield reception, the shield tunneling axis and the receiving end (trapezoid reinforcing area 205) are kept vertical in construction; the cutter head panel and the receiving end (the trapezoid reinforcing area 205) form plane contact, so that the station enclosure structure 103 is uniformly stressed and cut; the invention relates to guiding of a shield receiving combined structure, the outer edge of a trapezoid reinforcing area 205 is in vertical relation with a shield tunneling axis, the shield tunneling axis and a receiving end wall body can be free from being vertical, namely a cutter head panel and an end enclosure structure are free from being parallel, namely, the cutter head is uniformly stressed to realize oblique receiving (without being vertical) of a shield at any angle, damage is avoided, the shield receiving success rate is improved, and the posture of a shield machine is controllable.
The strength of the trapezoid reinforced area 205 formed by the plain concrete piles 202 is far greater than that of an undisturbed soil body, and the strength of the trapezoid reinforced area is higher than that of a conventional jet grouting pile and a conventional cement soil pile, so that the stability of an end stratum during shield receiving can be better ensured; meanwhile, the strength grade can be adjusted, the strength is controlled more accurately, the strength of the plain concrete pile 202 is equal to the strength of the station building envelope 103, the strength change is reduced when the shield machine enters in a cutting mode, the fluctuation of parameters of the shield machine is small, and the attitude of the shield machine is easy to control. The annular inner wall of the portal 109 is pre-embedded, providing a safe and reliable steel sleeve connection interface, facilitating the formation of a closed and safe receiving space.
It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. The positional or positional relationship indicated by the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "inner", "outer", etc., are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be constructed and operated in a specific orientation, since it is not to be construed as limiting the present invention.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present invention.
Claims (7)
1. The combined structure for shield receiving is arranged on a station main body structure, and the station main body structure comprises a station bottom plate, a station main body structure side wall and a station middle plate, and is characterized in that the combined structure for shield receiving comprises a bamboo cutting type steel sleeve, the bamboo cutting type steel sleeve is obliquely arranged on the inner wall of the station main body structure side wall, the inclination angle is smaller than 90 degrees, a tunnel portal is formed at the joint of the bamboo cutting type steel sleeve and the station main body structure side wall, and the tunnel portal is abutted with the bamboo cutting type steel sleeve and has the same size; a station enclosure structure is additionally arranged outside the side wall of the station main body structure, the outer side of the station enclosure structure is reinforced by plain concrete piles to form a trapezoid reinforced area, the outer edge end face of the trapezoid reinforced area is perpendicular to the shield tunneling central axis, and the inner edge end face of the trapezoid reinforced area is parallel to the station enclosure structure; the central axis of the bamboo cutting type steel sleeve coincides with the central axis of the shield tunneling so as to realize shield oblique receiving.
2. The shield-receiving composite structure of claim 1, wherein an embedded steel ring plate is arranged along the periphery of the tunnel portal, and the connection part of the bamboo-cutting type steel sleeve and the side wall inner wall of the station main body structure is closely attached through the embedded steel ring plate in a welding way.
3. The shield-received composite structure of claim 1, wherein said plain concrete piles are 1m in diameter with a 200mm inter-pile bite; and when the shield machine is driven into the trapezoid reinforcing area, the shield machine is enveloped by the upper bottom surface and the lower bottom surface of the trapezoid reinforcing area, and the depth of the trapezoid reinforcing area is 3m above the tunnel arch top to 3m below the tunnel bottom.
4. The shield-receiving composite structure of claim 1, wherein the skived bamboo type steel sleeve is composed of a rear end cover, a barrel body and a skived bamboo type end face.
5. A shield reception method using the shield reception combined structure according to any one of claims 1 to 4, comprising the steps of:
s1, constructing a main body structure of a station;
s2, constructing plain concrete piles after the construction of the station main body structure is completed and before the shield construction, and forming a trapezoid reinforcing area;
s3, installing a bamboo cutting type steel sleeve before shield receiving;
s4, detecting tightness of the bamboo cutting type steel sleeve;
s5, cutting the plain concrete pile and the station enclosure structure, performing shield receiving, and obliquely entering a bamboo cutting type steel sleeve by a shield machine;
s6, splicing segments at the tail of the shield and reinforcing synchronous grouting during shield receiving, and releasing pressure and disassembling the steel sleeve after water is injected into the tunnel portal through grouting, so that shield oblique receiving work is completed.
6. The shield reception method according to claim 5, wherein the step S1 of constructing the station main structure specifically includes:
s11, constructing a station enclosure structure;
s12, pouring a station bottom plate, a station main body structure side wall and a ring beam frame, and pre-burying a pre-buried steel ring plate during pouring construction of a station main body structure end wall to form a portal on the inner side of the steel ring plate;
s13, pouring the station middle plate.
7. The shield receiving method according to claim 6, wherein the bamboo cutting type steel sleeve is obliquely arranged on the inner wall of the side wall of the main body structure of the station, is abutted with the tunnel portal and has the same size; the outer edge end face of the trapezoid reinforcing area is perpendicular to the shield tunneling central axis, and the shield tunneling central axis coincides with the central axis of the bamboo cutting type steel sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310647863.7A CN116607976A (en) | 2023-06-02 | 2023-06-02 | Combined structure for shield reception and receiving method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310647863.7A CN116607976A (en) | 2023-06-02 | 2023-06-02 | Combined structure for shield reception and receiving method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116607976A true CN116607976A (en) | 2023-08-18 |
Family
ID=87679810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310647863.7A Pending CN116607976A (en) | 2023-06-02 | 2023-06-02 | Combined structure for shield reception and receiving method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116607976A (en) |
-
2023
- 2023-06-02 CN CN202310647863.7A patent/CN116607976A/en active Pending
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