CN111140247A - Supporting structure of shallow-buried large-diameter shield tunnel entrance and exit section and construction method thereof - Google Patents
Supporting structure of shallow-buried large-diameter shield tunnel entrance and exit section and construction method thereof Download PDFInfo
- Publication number
- CN111140247A CN111140247A CN202010162096.7A CN202010162096A CN111140247A CN 111140247 A CN111140247 A CN 111140247A CN 202010162096 A CN202010162096 A CN 202010162096A CN 111140247 A CN111140247 A CN 111140247A
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- Prior art keywords
- support
- tunnel
- shallow
- diameter shield
- telescopic
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D1/00—Sinking shafts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention relates to a supporting structure of a shallow-buried large-diameter shield tunnel access section, which is arranged at the access section of the tunnel and comprises: the support is erected on the bottom surface of the tunnel, and a set distance is reserved between the top of the support and the top surface of the tunnel; the telescopic pieces are arranged at the top of the bracket at intervals and can be telescopically adjusted along the direction close to or far away from the top surface of the tunnel; and the support can be rotatably arranged at the top of the telescopic piece, and the support is adjusted through rotation and the telescopic piece is adjusted in a telescopic way, so that the top surface of the support is attached to the top surface of the tunnel, and the tunnel is supported. The invention effectively solves the problems that the structure of the in-out section part of the tunnel is easy to deform and the construction quality is difficult to ensure, supports the inside of the tunnel, prevents the tunnel from deforming, and improves the bearing capacity of the tunnel, thereby ensuring the construction quality and reducing the potential safety hazard.
Description
Technical Field
The invention relates to the field of building construction, in particular to a supporting structure of an access section of a shallow-buried large-diameter shield tunnel and a construction method thereof.
Background
With the rapid development of urban underground space development, a shield method is used as a mature construction technology and is applied more and more widely, shield construction equipment and technology are rapidly developed, the ground in-out type shield method is widely applied at present, but when the in-out section of the tunnel with zero or ultra-shallow covered soil is constructed, the risks of water burst, sand burst, collapse and the like exist, the ground deformation exists in the actual construction process, and the tunnel structure, the tunnel posture and the segment ring forming quality are difficult to control, so that the construction quality is difficult to guarantee, and the potential safety hazard is large.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a supporting structure of a shallow-buried large-diameter shield tunnel entrance and exit section and a construction method thereof, solves the problems that the structure of the tunnel entrance and exit section is easy to deform and the construction quality is difficult to guarantee, supports the inside of a tunnel, prevents the tunnel from deforming, improves the bearing capacity of the tunnel, ensures the construction quality and reduces the potential safety hazard.
The technical scheme for realizing the purpose is as follows:
the invention provides a supporting structure of a shallow-buried large-diameter shield tunnel access section, which is arranged at the access section of the tunnel and comprises:
the support is erected on the bottom surface of the tunnel, and a set distance is reserved between the top of the support and the top surface of the tunnel;
the telescopic pieces are arranged at the top of the bracket at intervals and can be telescopically adjusted along the direction close to or far away from the top surface of the tunnel; and
the support at the top of extensible member is rotationally installed, adjusts the support and telescopically adjusts the extensible member through rotating for the top surface laminating in the top surface in tunnel of support, thereby support the tunnel.
The support structure adopts a support structure of a shallow-buried large-diameter shield tunnel entrance and exit section, a support is arranged at the entrance and exit section of the tunnel, an extensible part is arranged at the top of the support, a support is further arranged on the extensible part, the support is adjusted by rotating the adjusting support and correspondingly adjusting the extensible part in an extensible way, so that the top surface of the support is attached to the top surface corresponding to the tunnel, the support and the support are supported in the tunnel, vertical supporting force is provided for the inside of the tunnel, the tunnel is prevented from deforming under the extrusion of surrounding soil bodies, the problems that the tunnel structure is easy to deform and the construction quality is difficult to guarantee are solved, the inside of the tunnel is supported, the tunnel is prevented from deforming, the bearing capacity of the tunnel is improved, the construction quality.
The supporting structure of the shallow-buried large-diameter shield tunnel entrance and exit section is further improved in that the supporting structure further comprises a connecting rod which is connected between two adjacent supports through a tie and is horizontally arranged.
The support structure of the shallow-buried large-diameter shield tunnel entrance and exit section is further improved in that the support comprises upright columns which are arranged on the bottom surface of the tunnel at intervals and vertically and horizontal beams which are connected between two adjacent upright columns through tie knots, and the upright columns and the beams are connected in a net shape.
The support structure of the shallow-buried large-diameter shield tunnel entrance and exit section is further improved in that each upright column comprises a plurality of column bodies which are connected end to form the upright column in a splicing manner.
The supporting structure of the shallow-buried large-diameter shield tunnel entrance and exit section is further improved in that the telescopic piece comprises a fixed pipe fixed at the top of the support and a screw rod screwed in the fixed pipe, the telescopic piece is telescopically adjusted by screwing the screw rod, and the support is installed at the top of the screw rod.
The supporting structure of the shallow-buried large-diameter shield tunnel entrance and exit section is further improved in that the support is fixed to the top of the telescopic piece through a ball hinge.
The invention provides a construction method of a supporting structure of a shallow-buried large-diameter shield tunnel entrance and exit section, which comprises the following steps:
a bracket is arranged on the bottom surface of the access section of the tunnel;
providing a plurality of telescopic pieces, and mounting the telescopic pieces on the top of the bracket at intervals;
providing a support, and rotatably installing the support on the top of the telescopic piece;
the support is adjusted in a rotating mode, the telescopic piece is adjusted in a telescopic mode, the top face of the support is attached to the top face of the tunnel, and the tunnel is supported.
The construction method of the supporting structure of the shallow-buried large-diameter shield tunnel entrance and exit section is further improved in that after the support is installed, the method further comprises the following steps:
and a horizontal connecting rod is arranged between the adjacent supports to connect the supports to form an integral structure.
The construction method of the supporting structure of the shallow-buried large-diameter shield tunnel entrance and exit section is further improved in that when the support is erected, the method further comprises the following steps:
and (3) synchronously erecting a construction frame on the side part of the support, and installing scaffold boards and stairs on the construction frame to form a construction platform and a walking channel.
The construction method of the supporting structure of the shallow-buried large-diameter shield tunnel entrance and exit section is further improved in that before the support is installed, the method further comprises the following steps:
a hoisting device is provided, and the hoisting device is mounted on the support to convey the construction material to the top of the support.
Drawings
Fig. 1 is a front view of an embodiment of a supporting structure of an access section of a shallow-buried large-diameter shield tunnel according to the invention.
Fig. 2 is a front view of another embodiment of the supporting structure of the shallow large-diameter shield tunnel entrance-exit section of the invention.
Fig. 3 is a side sectional view of the supporting structure of the shallow-buried large-diameter shield tunnel entrance-exit section of the invention.
Fig. 4 is a top cross-sectional view of the support structure column portion of the shallow large diameter shield tunnel entrance and exit section of the present invention.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
Referring to fig. 1, the invention provides a supporting structure for an access section of a shallow-buried large-diameter shield tunnel, wherein a support is arranged at the access section of the tunnel, an extensible member is arranged at the top of the support, a support is further arranged on the extensible member, and the top surface of the support is attached to the top surface corresponding to the tunnel by rotating and correspondingly adjusting the extensible member and adjusting the support in an extensible manner, so that the support and the support are supported in the tunnel, vertical supporting force is provided for the inside of the tunnel, the tunnel is prevented from deforming under the extrusion of surrounding soil, the problems that the structure of the access section of the tunnel is easy to deform and the construction quality is difficult to guarantee are solved, the inside of the tunnel is supported, the tunnel is prevented from deforming, the bearing capacity of the tunnel is improved, the construction quality is guaranteed, and potential. The supporting structure of the shallow-buried large-diameter shield tunnel entrance and exit section of the invention is explained below with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 is a front view of an embodiment of a supporting structure of an access section of a shallow-buried large-diameter shield tunnel according to the present invention. The supporting structure of the shallow-buried large-diameter shield tunnel entrance and exit section of the invention is explained with reference to fig. 1.
As shown in fig. 1 and 3, the supporting structure of the shallow-buried large-diameter shield tunnel entrance and exit section of the present invention is provided at the entrance and exit section of the tunnel 21, and includes:
a bracket 11 supported on the bottom surface of the tunnel 21, wherein a set distance is formed between the top of the bracket 11 and the top surface of the tunnel 21;
the support 13 rotatably installed on the top of the telescopic member 12 supports the tunnel 21 by rotating the adjusting support 13 and telescopically adjusting the telescopic member 12 such that the top surface of the support 13 is attached to the top surface of the tunnel 21.
Preferably, as shown in fig. 1, a bottom plate may be laid on the bottom of the tunnel 21, and the bracket 11 may be mounted on the bottom plate; as shown in fig. 2, a recess may be chiseled in the tube sheet at the bottom of the tunnel 21 and the support 11 may be set up in the recess.
As a preferred embodiment of the present invention, a tie bar 131 horizontally disposed and connected between two adjacent supports 13 is further included to connect several supports 13 into an integral structure, so as to disperse the stress applied to the supports 13.
Further, the support 11 includes vertical columns 111 spaced apart from and vertically supported on the bottom surface of the tunnel 21, and horizontal beams 112 connected between two adjacent vertical columns 111 by tie, and the vertical columns 111 and the horizontal beams 112 are connected in a net shape to disperse the stress applied to the vertical columns 111.
Specifically, each upright 111 includes a plurality of columns connected end to form the upright 111.
Preferably, as shown in fig. 4, each column body is formed by enclosing nine steel pipes, the top of the steel pipe located at the topmost part is provided with the telescopic member 12, the top of the nine telescopic members 12 is provided with a backing plate, and the support 13 is rotatably mounted on the backing plate, so that the upright 111 has higher bearing capacity.
Further, the telescopic member 12 includes a fixed pipe fixed to the top of the bracket 11 and a screw screwed into the fixed pipe, the telescopic member 12 is telescopically adjusted by screwing the screw, and the support 13 is mounted on the top of the screw.
In particular, the seat 13 is fixed to the top of the telescopic element 12 by means of a ball hinge.
The specific embodiment of the invention is as follows:
erecting a scaffold 14 around a position to be erected with the column 111 on the bottom surface of the entrance and exit section of the tunnel 21, installing a stair and a scaffold board on the scaffold 14, and erecting the column 111 synchronously by using the scaffold 14;
a horizontal cross beam 112 is arranged at the position, close to the top, of the upright posts 111, and the cross beam 112 is connected between two adjacent upright posts 111, so that the cross beam 112 and the upright posts 111 are connected in a net shape;
installing a telescopic piece 12 on the top of the upright post 111, installing a support 13 on the top of the telescopic piece 12 through a ball hinge, and rotating the support 13 and telescopically adjusting the telescopic piece 12 to ensure that the top surface of the support 13 is attached to the top surface of the tunnel 21, wherein the upright post 111 and the support 13 support the inside of the tunnel 21;
connect horizontal connecting rod 131 between two adjacent supports 13 to the stress of dispersion support 13 has accomplished whole supporting construction in tunnel 21 this moment, can prevent effectively that tunnel 21's discrepancy section from warping, guarantees construction quality, reduces the potential safety hazard.
The invention also provides a construction method of the supporting structure of the shallow-buried large-diameter shield tunnel entrance and exit section, which comprises the following steps:
a bracket 11 is arranged on the bottom surface of the entrance and exit section of the tunnel 21;
providing a plurality of telescopic parts 12, and installing the telescopic parts 12 at the top of the bracket 11 at intervals;
providing a support, and rotatably mounting a support 13 on the top of the telescopic member 12;
the adjustable support 13 is rotated and the extensible member 12 is telescopically adjusted so that the top surface of the support 13 is engaged with the top surface of the tunnel 21, thereby supporting the tunnel 21.
Further, after installing the support 13, the apparatus further includes:
horizontal connecting rods 131 are installed between adjacent supports 13 to connect the supports 13 in an integrated structure, thereby dispersing stress applied to the supports 13.
Preferably, when the bracket 11 is set up, the method further comprises:
the scaffold 14 is synchronously erected on the side portion of the support 11, and the scaffold boards and the stairs are installed on the scaffold 14 to form a construction platform and a walking channel, so that materials are conveniently conveyed and workers are conveniently constructed.
Before the mounting of the support 13, it is further preferred that:
a hoisting device, which may be an operation platform lifted and lowered by a fixed pulley installed on the top of the frame 11, is provided and installed on the frame 11 to transport the construction material to the top of the frame 11.
The concrete operation mode of the construction method provided by the invention is as follows:
erecting a scaffold 14 around a position to be provided with the upright 111 on the bottom surface of the entrance and exit section of the tunnel 21, installing a stair and a scaffold board on the scaffold 14, and synchronously erecting the upright 111 by using the scaffold 14;
a horizontal cross beam 112 is arranged at the position, close to the top, of the upright posts 111, and the cross beam 112 is connected between two adjacent upright posts 111, so that the cross beam 112 and the upright posts 111 are connected in a net shape;
installing a telescopic piece 12 on the top of the upright post 111, installing a support 13 on the top of the telescopic piece 12 through a ball hinge, and rotating the support 13 and telescopically adjusting the telescopic piece 12 to ensure that the top surface of the support 13 is attached to the top surface of the tunnel 21, wherein the upright post 111 and the support 13 support the inside of the tunnel 21;
connect horizontal connecting rod 131 between two adjacent supports 13 to the stress of dispersion support 13 has accomplished whole supporting construction in tunnel 21 this moment, can prevent effectively that tunnel 21's discrepancy section from warping, guarantees construction quality, reduces the potential safety hazard.
While the present invention has been described in detail and with reference to the embodiments thereof as illustrated in the accompanying drawings, it will be apparent to one skilled in the art that various changes and modifications can be made therein. Therefore, certain details of the embodiments are not to be interpreted as limiting, and the scope of the invention is to be determined by the appended claims.
Claims (10)
1. The utility model provides a supporting construction of shallow major diameter shield tunnel discrepancy section that buries, its characterized in that, supporting construction sets up in the discrepancy section in tunnel, supporting construction includes:
the bracket is erected on the bottom surface of the tunnel, and a set distance is reserved between the top of the bracket and the top surface of the tunnel;
the telescopic pieces are arranged at the top of the bracket at intervals and can be telescopically adjusted along the direction close to or far away from the top surface of the tunnel; and
the support is rotatably arranged at the top of the telescopic piece, and the support is adjusted through rotation and the telescopic piece is adjusted in a telescopic mode, so that the top surface of the support is attached to the top surface of the tunnel, and the tunnel is supported.
2. The support structure for the shallow large-diameter shield tunnel entrance and exit section according to claim 1, further comprising a tie bar horizontally disposed and connected between two adjacent supports.
3. The support structure for the shallow large-diameter shield tunnel entrance/exit section according to claim 1, wherein the support frame comprises vertical columns which are vertically arranged at intervals on the bottom surface of the tunnel, and horizontal beams which are connected between two adjacent vertical columns by tie joints, and the vertical columns and the horizontal beams are connected in a net shape.
4. The support structure for the shallow large-diameter shield tunnel entrance and exit section of claim 3, wherein each of the columns comprises a plurality of columns, and the columns are spliced by connecting the plurality of columns end to end.
5. The support structure for the shallow large-diameter shield tunnel entrance and exit section according to claim 1, wherein the telescopic member comprises a fixed pipe fixed to the top of the support frame and a screw rod screwed into the fixed pipe, the telescopic member is telescopically adjusted by screwing the screw rod, and the support is mounted on the top of the screw rod.
6. The support structure for the shallow large-diameter shield tunnel entrance and exit section according to claim 1, wherein the support base is fixed to the top of the telescopic member by a ball hinge.
7. A construction method of a supporting structure of an access section of a shallow-buried large-diameter shield tunnel according to claim 1, which comprises the following steps:
a support is arranged on the bottom surface of the access section of the tunnel;
providing a plurality of telescopic pieces, and mounting the telescopic pieces on the top of the bracket at intervals;
providing the support, and rotatably mounting the support on the top of the telescopic piece;
the support is rotationally adjusted and the telescopic piece is telescopically adjusted, so that the top surface of the support is attached to the top surface of the tunnel, and the tunnel is supported.
8. The method for constructing a supporting structure of an access section of a shallow-buried large-diameter shield tunnel according to claim 7, wherein after the support is installed, the method further comprises the following steps:
and a horizontal connecting rod is arranged between the adjacent supports to connect the supports to form an integral structure.
9. The construction method of a supporting structure of an access section of a shallow-buried large-diameter shield tunnel according to claim 7, wherein when the bracket is erected, the construction method further comprises the following steps:
and synchronously erecting a construction frame on the side part of the support, and installing scaffold boards and stairs on the construction frame to form a construction platform and a walking channel.
10. The method for constructing a supporting structure of an access section of a shallow-buried large-diameter shield tunnel according to claim 7, wherein before the support is installed, the method further comprises the following steps:
and providing a hoisting device, and installing the hoisting device on the support to convey the construction materials to the top of the support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010162096.7A CN111140247A (en) | 2020-03-10 | 2020-03-10 | Supporting structure of shallow-buried large-diameter shield tunnel entrance and exit section and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010162096.7A CN111140247A (en) | 2020-03-10 | 2020-03-10 | Supporting structure of shallow-buried large-diameter shield tunnel entrance and exit section and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111140247A true CN111140247A (en) | 2020-05-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010162096.7A Pending CN111140247A (en) | 2020-03-10 | 2020-03-10 | Supporting structure of shallow-buried large-diameter shield tunnel entrance and exit section and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111140247A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103046874A (en) * | 2013-01-17 | 2013-04-17 | 重庆平山矿山机电设备有限公司 | Underground drill rig and supporting device thereof |
| CN103758543A (en) * | 2014-01-21 | 2014-04-30 | 中国矿业大学 | Temporary advanced support device |
| CN208702442U (en) * | 2018-08-30 | 2019-04-05 | 中交一公局第五工程有限公司 | Tunnel support structure |
| CN109915190A (en) * | 2019-04-19 | 2019-06-21 | 安徽省矿业机电装备有限责任公司 | It is a kind of for the bracket of roadway support and the application method of bracket |
| CN209780923U (en) * | 2019-04-17 | 2019-12-13 | 辽宁鑫丰矿业（集团）有限公司 | Support bracket and support equipment |
-
2020
- 2020-03-10 CN CN202010162096.7A patent/CN111140247A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103046874A (en) * | 2013-01-17 | 2013-04-17 | 重庆平山矿山机电设备有限公司 | Underground drill rig and supporting device thereof |
| CN103758543A (en) * | 2014-01-21 | 2014-04-30 | 中国矿业大学 | Temporary advanced support device |
| CN208702442U (en) * | 2018-08-30 | 2019-04-05 | 中交一公局第五工程有限公司 | Tunnel support structure |
| CN209780923U (en) * | 2019-04-17 | 2019-12-13 | 辽宁鑫丰矿业（集团）有限公司 | Support bracket and support equipment |
| CN109915190A (en) * | 2019-04-19 | 2019-06-21 | 安徽省矿业机电装备有限责任公司 | It is a kind of for the bracket of roadway support and the application method of bracket |
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Application publication date: 20200512 |