CN209742919U - Shield method contact passage starting tunnel portal steel sleeve supporting structure - Google Patents
Shield method contact passage starting tunnel portal steel sleeve supporting structure Download PDFInfo
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- CN209742919U CN209742919U CN201920086112.1U CN201920086112U CN209742919U CN 209742919 U CN209742919 U CN 209742919U CN 201920086112 U CN201920086112 U CN 201920086112U CN 209742919 U CN209742919 U CN 209742919U
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Abstract
the utility model discloses a shield constructs method contact passageway and originates portal steel sleeve and accepts structure, characterized by: the split steel sleeve applied to the shield method communication channel starting tunnel portal construction is arranged into a sleeve body and a circle of receiving barrel located at the front end of the sleeve body, the front port of the receiving barrel is welded and installed at the tunnel portal, a flange structure is arranged between the tail port of the receiving barrel and the front port of the sleeve body, and bolts are used for connection in the flange structure. The utility model discloses can effectively improve the steel sleeve contact passageway and initiate the installation into power of the entrance to a cave department of entrance to a cave, avoid steel sleeve heat altered shape, guarantee the engineering quality, improve the engineering progress.
Description
Technical Field
The utility model relates to a shield constructs method tunnel construction technical field, and the more specifically steel sleeve of portal department of starting who uses in shield constructs method contact passageway construction accepts the structure that says so.
Background
The shield method connection channel construction technology is a new technology in the field of connection channel construction, and is used for ensuring the safety and the high efficiency of connection channel construction.
The connection channel is arranged between the uplink tunnel line and the downlink tunnel line, so that the uplink tunnel line and the downlink tunnel line can be communicated, and the connection channel is an important guarantee for safe operation of the tunnel. In order to ensure the waterproof effect of the tunnel portal in the starting construction of the shield machine, the steel sleeve is used as a starting waterproof device to ensure the construction safety.
As shown in fig. 4 and 5, a T-shaped interface is formed between the main tunnel 7 and the communication channel 8, and for a conventional phi 5500mm inside diameter lined subway shield tunnel, the aperture of the communication channel opening hole in the shield method is phi 3400mm, so that the socket between the steel sleeve 1 and the communication channel starting tunnel portal 4 is in a hyperboloid shape formed by the intersection of a large-diameter subway shield tunnel and a small-diameter communication channel opening hole; in the extremely limited space of tunnel thread, to the steel sleeve of bulky and heavy weight, no matter adopt hoist and mount welding or support welded mounting mode all be difficult to guarantee the good counterpoint of hyperboloid shape faucet in portal department, the installation power is low, simultaneously, because of welding generates heat and leads to the device to have the deformation risk in the installation, this situation has greatly influenced the engineering progress.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a weak point that exists for avoiding above-mentioned prior art provides a shield structure method contact passageway and originates portal steel sleeve and accept structure to improve the steel sleeve and originate the installation of portal department's of portal into power at the contact passageway, avoid steel sleeve heat altered shape, thereby guarantee the engineering quality, improve the engineering progress.
The utility model discloses a solve technical problem and adopt following technical scheme:
The utility model discloses shield structure method contact passageway steel sleeve of starting tunnel portal accepts structure's characteristics are: the method comprises the steps that a steel sleeve used in shield method communication channel starting tunnel portal construction is divided into a sleeve body and a circle of receiving barrel located at the front end of the sleeve body, the front end opening of the receiving barrel is welded and installed at the tunnel opening, a flange structure is arranged between the tail end opening of the receiving barrel and the front end opening of the sleeve body, and bolts are used for connection in the flange structure.
the utility model discloses shield structure method contact passageway is originated portal steel sleeve and is accepted the characteristics of structure and also lie in: a shaping steel support is arranged on the tail end port of the bearing cylinder in a matched mode, and the shaping steel support arranged on the tail end port of the bearing cylinder is used for shaping the bearing cylinder; and a flange structure is arranged between the tail end port of the bearing cylinder and the shaping steel support, and the flange structure is connected by using bolts.
The utility model discloses shield structure method contact passageway is originated portal steel sleeve and is accepted the characteristics of structure and also lie in: the shaping steel support is an H-shaped steel support arranged in the flange ring.
The utility model discloses shield structure method contact passageway is originated portal steel sleeve and is accepted the characteristics of structure and also lie in: the length of the bearing sleeve in the axial direction of the steel sleeve is set to be 10-30 cm.
Compared with the prior art, the utility model discloses beneficial effect embodies:
1. The steel sleeve split body is arranged into the sleeve body and the round receiving barrel, the receiving barrel is arranged at the portal position prior to the sleeve body through welding, and then the sleeve body is arranged at the tail part of the receiving barrel through a flange structure by using bolts; the bearing cylinder is light in weight and small in size, so that rapid welding can be accurately carried out on the tunnel portal; the bearing cylinder is arranged to form a yielding space for the sleeve body in the axial direction, so that the installation operation of the steel sleeve body is greatly facilitated, the bearing cylinder is arranged to enable the sleeve body to be installed by adopting a flange structure and utilizing bolts, the installation speed is greatly increased, the installation quality is guaranteed, and meanwhile, the risk of deformation of the device caused by welding heat is effectively avoided.
2. The utility model discloses a supporting design steel shotcrete that sets up of a receiving section of thick bamboo to the design steel shotcrete that is the rigidity has effectively avoided the steel member to hold a receiving section of thick bamboo and has not taken place to warp in transportation and installation, and utilizes the design steel shotcrete to lift by crane and position adjustment to a receiving section of thick bamboo in the installation, makes a receiving section of thick bamboo can carry out quick accurate counterpoint installation in entrance to a cave department.
3. The utility model discloses it is very ingenious with the counterpoint mode to lifting by crane of a holding section of thick bamboo, and it lifts by crane smoothly, and the counterpoint is accurate, effectively avoids a holding section of thick bamboo to damage because of the collision in the tunnel.
Drawings
FIG. 1 is a schematic view of the installation of the steel sleeve at the starting tunnel portal of the communication channel according to the present invention;
FIG. 2 and FIG. 2a are schematic diagrams of the front and side views of the receiving tube of the present invention;
FIG. 3 and FIG. 3a are schematic diagrams of the front and side views of the receiving cylinder of the present invention;
FIG. 4 is a schematic view of a "T" shaped interface between a communication channel and a main tunnel;
FIG. 5 is a schematic view of a steel sleeve construction;
Fig. 6, 7 and 8 are schematic diagrams illustrating the hoisting and installation process of the receiving cylinder of the present invention;
Fig. 9 is a schematic top view of the lifting point of the present invention;
Reference numbers in the figures: 1 steel sleeve, 2 take up a section of thick bamboo, 2a sleeve body, 3 design steel props, 3a flange circle, 3b are "H" type steel props, 4 contact passageway originating door, 5a inboard lifting point, 5b outside lifting point, 6 tunnel transport vechicles, 7 positive line tunnels, 8 contact passageways.
Detailed Description
referring to fig. 4 and 5, in the embodiment, a T-shaped interface is formed between the main tunnel 7 and the communication channel 8, and for a metro shield tunnel with a 5500mm inner diameter lining, the aperture of the communication channel opening of the shield method is phi 3400mm, so that the socket between the steel sleeve 1 and the communication channel originating tunnel door 4 is a hyperboloid shape formed by the intersection of a large-diameter metro shield tunnel and a small-diameter communication channel opening.
referring to fig. 1, fig. 2 and fig. 2a, the receiving structure of the steel sleeve of the originating tunnel portal of the shield method communication channel in the embodiment is as follows: the split steel sleeve 1 applied to the shield method communication channel starting tunnel portal construction is arranged to be a sleeve body 2a and a circle of receiving barrel 2 located at the front end of the sleeve body 2a, the front port of the receiving barrel 2 is welded and installed at the tunnel portal, a flange structure is arranged between the tail port of the receiving barrel 2 and the front port of the sleeve body 2a, and the flange structure is connected through bolts.
Referring to fig. 3 and fig. 3a, in a specific implementation, a shaping steel support 3 is arranged on the tail end port of the receiving cylinder 2 in a matching manner, and the receiving cylinder is shaped by using the shaping steel support 3 arranged on the tail end port of the receiving cylinder 2; a flange structure is arranged between the tail end port of the bearing cylinder 2 and the shaping steel support 3, and the flange structure is connected by using bolts; the shaping steel support 3 is that an H-shaped steel support 3b is arranged in a flange ring 3 a; the length of the bearing sleeve in the axial direction of the steel sleeve is set to be 10-30 cm.
The method for installing the steel sleeve of the starting tunnel portal of the shield method communication channel in the embodiment comprises the following steps:
The method comprises the following steps that a steel sleeve 1 applied to shield method communication channel starting tunnel portal construction is divided into a sleeve body 2a and a circle of receiving barrel 2 located at the front end of the sleeve body 2a, the front port of the receiving barrel 2 is welded at a tunnel opening, a flange structure is arranged between the tail port of the receiving barrel 2 and the front port of the sleeve body 2a, and bolts are used for connection in the flange structure; the shaping steel support 3 is arranged on the tail end port of the receiving cylinder 2 in a matched mode, and the shaping steel support 3 arranged on the tail end port of the receiving cylinder 2 is used for shaping the receiving cylinder 2; a flange structure is arranged between the tail end port of the bearing cylinder 2 and the shaping steel support 3, and the flange structure is connected by using bolts;
Referring to fig. 1, 6, 7 and 8, the installation process is performed as follows:
Step 1, dismantling the flange connection to enable the sleeve body 2a and the bearing cylinder 2 to be separated, fixedly installing the shaping steel support 3 on the tail end port of the bearing cylinder 2 through the flange connection, and shaping the bearing cylinder through the shaping steel support 3.
And 2, hoisting the bearing cylinder 2 shaped by the shaped steel support 3 to the opening of the initial opening 4 of the communication channel, and welding and installing the front end opening of the bearing cylinder 2 on the opening of the initial opening of the communication channel to fix the bearing cylinder on the opening.
and 3, removing the shaped steel support 3 from the tail port of the bearing cylinder 2, replacing the connecting sleeve body 2a by using a flange structure, connecting the bearing cylinder 2 and the sleeve body 2a through bolts to form the steel sleeve 1, and installing the steel sleeve 1.
As shown in fig. 6, fig. 7, fig. 8 and fig. 9, the hoisting of the receiving tube to the opening position of the originating opening of the communication channel in step 2 is performed as follows:
2.1, selecting four lifting points in front of a tunnel portal, wherein two inner lifting points 5a are positioned on the side wall of the tunnel at the side of the tunnel portal and are symmetrically distributed on two sides of the tunnel portal; the two outer lifting points 5b are positioned on the side wall of the tunnel opposite to the tunnel opening, and the top view positions of the four lifting points are four vertex positions of a rectangle (as shown in fig. 9); hoisting hoists are arranged on each hoisting point, namely an inner hoisting hoist arranged on the two inner hoisting points and an outer hoisting hoist arranged on the two outer hoisting points; four lifting lugs are uniformly distributed on the shaping steel support 3 along the circumference of the shaping steel support;
if the horizontal distance between the two inner lifting points and the portal is equal to the horizontal distance between the lifting lugs at the corresponding positions in the shaped steel support and the portal, the front port of the vertical bearing cylinder can be positioned on the portal of the initial portal of the communication channel, so as to facilitate accurate alignment welding installation; the horizontal distance between two inner hoisting points and the portal is required to be avoided to be larger than the horizontal distance between a lifting lug and the portal at the corresponding position in the shaping steel support, otherwise, the front port of the vertical bearing cylinder is far away from the portal of the portal where the contact channel starts, and the accurate alignment welding installation is not facilitated.
2.2, connecting four hoisting hoists in front of the portal with four lifting lugs on the shaping steel support in a one-to-one correspondence manner, hoisting a receiving cylinder 2 fixedly connected to the shaping steel support 3 by using the four hoisting hoists to be horizontal, wherein the hoisting height is not lower than the height of the top edge of the portal; the bearing cylinder 2 in a horizontal state is positioned at the bottom of the shaping steel support 3;
and 2.3, keeping the lifting height of the two inner lifting hoists, synchronously releasing the lifting height of the two outer lifting hoists, turning the shaped steel support and the bearing cylinder into a vertical state, and enabling the bearing cylinder 2 to be positioned at the position of the opening of the initial opening of the communication channel.
in specific implementation, after the shaping steel support 3 is removed from the tail end port of the receiving cylinder 2 in the step 3, the lifting degrees of the two inner lifting hoists are kept high, the two outer lifting hoists are tightened, the shaping steel support 3 in a vertical state is made to be horizontal, then the four lifting hoists are synchronously released, and the disassembled shaping steel support 3 is horizontally placed on the tunnel transport vehicle 6 and transported out of the tunnel along with the tunnel transport vehicle 6.
at present, the urban subway shield tunnel in China is conventionally inner diameter lining with phi 5500mm, and the outer diameter of an opening of a contact channel in a shield method is phi 3400mm, so that the front end surface of a steel sleeve is an intersecting curved surface between the inner diameter lining with phi 5500mm and the outer diameter of the opening of the contact channel with phi 3400mm, and is a geometric curve of a hyperboloid; based on this, the utility model discloses well front end mouth of holding a section of thick bamboo has corresponding hyperboloid shape promptly, and the afterbody port of holding a section of thick bamboo can set up to same hyperboloid shape, also can set up to the plane, and the front end mouth of sleeve body and design steel shotcrete set up to the afterbody port matched with shape of holding a section of thick bamboo that is connected.
Claims (4)
1. The utility model provides a shield constructs method contact passageway and starts portal steel sleeve and accepts structure which characterized by: the method comprises the steps that a steel sleeve (1) applied to shield method communication channel starting tunnel portal construction is divided into a sleeve body (2a) and a circle of receiving barrel (2) located at the front end of the sleeve body (2a), the front end port of the receiving barrel (2) is welded at the tunnel portal, a flange structure is arranged between the tail end port of the receiving barrel (2) and the front end port of the sleeve body (2a), and the flange structure is connected through bolts.
2. The bearing structure of the steel sleeve of the shield method communication channel starting tunnel portal according to claim 1, which is characterized in that: a shaping steel support (3) is arranged on the tail end port of the bearing cylinder (2) in a matched mode, and the shaping steel support (3) installed on the tail end port of the bearing cylinder (2) is used for shaping the bearing cylinder (2); and a flange structure is arranged between the tail end port of the bearing cylinder (2) and the shaping steel support (3), and the flange structure is connected by using bolts.
3. The bearing structure of the steel sleeve of the shield method communication channel starting tunnel portal according to claim 2, wherein: the shaping steel support (3) is characterized in that an H-shaped steel support (3b) is arranged in the flange ring (3 a).
4. the bearing structure of the steel sleeve of the shield method communication channel starting tunnel portal according to claim 1, which is characterized in that: the length of the bearing sleeve (2) in the axial direction along the steel sleeve (1) is set to be 10-30 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920086112.1U CN209742919U (en) | 2019-01-18 | 2019-01-18 | Shield method contact passage starting tunnel portal steel sleeve supporting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920086112.1U CN209742919U (en) | 2019-01-18 | 2019-01-18 | Shield method contact passage starting tunnel portal steel sleeve supporting structure |
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| Publication Number | Publication Date |
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| CN209742919U true CN209742919U (en) | 2019-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920086112.1U Active CN209742919U (en) | 2019-01-18 | 2019-01-18 | Shield method contact passage starting tunnel portal steel sleeve supporting structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109653774A (en) * | 2019-01-18 | 2019-04-19 | 中铁上海工程局集团有限公司 | Shield method service channel originates portal steel bushing adapting structure for electric and its installation method |
| CN112031810A (en) * | 2020-09-27 | 2020-12-04 | 中铁工程装备集团有限公司 | Connecting channel portal structure and connecting method thereof |
-
2019
- 2019-01-18 CN CN201920086112.1U patent/CN209742919U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109653774A (en) * | 2019-01-18 | 2019-04-19 | 中铁上海工程局集团有限公司 | Shield method service channel originates portal steel bushing adapting structure for electric and its installation method |
| CN109653774B (en) * | 2019-01-18 | 2023-11-21 | 中铁上海工程局集团有限公司 | Shield method connection channel starting portal steel sleeve bearing structure and installation method thereof |
| CN112031810A (en) * | 2020-09-27 | 2020-12-04 | 中铁工程装备集团有限公司 | Connecting channel portal structure and connecting method thereof |
| CN112031810B (en) * | 2020-09-27 | 2022-05-27 | 中铁工程装备集团有限公司 | Connecting channel portal structure and connecting method thereof |
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Effective date of registration: 20210423 Address after: 200040, No. three, 278 Road, Jingan District, Shanghai Patentee after: SHANGHAI CIVIL ENGINEERING Co.,Ltd. OF CREC Patentee after: NINGBO RAIL TRANSIT GROUP Co.,Ltd. Patentee after: SHANGHAI CIVIL ENGINEERING CO., LTD. OF CREC URBAN RAIL TRANSIT ENGINEERING Co. Address before: No. 272 and No. 278 Jiangchang Third Road, Jing'an District, Shanghai, 200436 Patentee before: SHANGHAI CIVIL ENGINEERING Co.,Ltd. OF CREC Patentee before: SHANGHAI CIVIL ENGINEERING CO., LTD. OF CREC URBAN RAIL TRANSIT ENGINEERING Co. |