CN104453937A - Pre-embedding device and method of tunnel vault ground terminals - Google Patents
Pre-embedding device and method of tunnel vault ground terminals Download PDFInfo
- Publication number
- CN104453937A CN104453937A CN201410763764.6A CN201410763764A CN104453937A CN 104453937 A CN104453937 A CN 104453937A CN 201410763764 A CN201410763764 A CN 201410763764A CN 104453937 A CN104453937 A CN 104453937A
- Authority
- CN
- China
- Prior art keywords
- earth terminal
- tunnel
- circumferential reinforcement
- secondary lining
- top template
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/73—Means for mounting coupling parts to apparatus or structures, e.g. to a wall
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/66—Connections with the terrestrial mass, e.g. earth plate, earth pin
Abstract
The invention discloses a pre-embedding device and method of tunnel vault ground terminals and belongs to the technical field of tunnel supporting. The device comprises a primary supporting lining of a tunnel and a secondary lining trolley, circumferential rebars are arranged inside the arch surface along the primary supporting lining of the tunnel, a top form of the secondary supporting lining trolley is a cambered surface compatible with the arch surface of the primary supporting lining of the tunnel, the top form of the secondary supporting lining trolley is arranged closely to the bottom of the circumferential rebars, the middle of the circumferential rebars are provided with ground terminals, the circumferential rebars on the lateral sides of the ground terminals are provided with fixed connecting parts respectively, the bottoms of the fixed connecting parts are welded on a top plate of the secondary supporting lining trolley, secondary lining concrete is casted between the top plate of the secondary supporting lining trolley and the first supporting lining of the tunnel. The invention also discloses a method of pre-embedding tunnel vault ground terminals. The pre-embedding device and method of tunnel vault ground terminals allow ground terminals to be pre-embedded accurately.
Description
Technical field
The present invention relates to tunnel support technical field, particularly relate to pre-embedded device and the built-in process thereof of non-structure reinforcing bar vault earth terminal in a kind of lining construction of II, III level surrounding rock tunnel.
Background technology
At present, in II, III grade of country rock location, when applying the tunnel passed through for electric locomotive, because country rock is more firm, general secondary lining does not arrange liner structure reinforcing bar, but according to the requirement of electric locomotive contact net, the tunnel vault passed through in electric locomotive arranges first earth terminal from import 2 meters of, the earth terminal that 2 spacing are 5 meters to be set at interval of 45 meters later, earth terminal normally links together with the structure reinforcing bars in vault liner structure, to reach the object of electric locomotive contact net reliable ground.In order to solve the problem with grounding of the tunnel vault not arranging liner structure reinforcing bar, job site does not arrange the tunnel place of liner structure reinforcing bar by arranging the extraction ground wire of a circumferential reinforcement as contact net separately at secondary lining, bridge tunnel type earth terminal is provided with at this circumferential reinforcement top, after the chassis of secondary lining is in place, in the secondary lining casting space at this circumferential reinforcement place pre-set, carry out concrete (concrete) build, because this circumferential reinforcement does not have fixed support, movement and the rotation of circumferential reinforcement is often there is when building concrete, earth terminal is caused to misplace, earth terminal is even caused directly to be imbedded in concrete, cannot search, have influence on carrying out smoothly of later stage engineering.
Summary of the invention
(1) technical problem that will solve
The technical problem to be solved in the present invention is how at tunnel non-structure lengths of rebar correct embedment earth terminal.
(2) technical scheme
In order to solve the problems of the technologies described above, the invention provides a kind of tunnel vault earth terminal pre-embedded device, it comprises tunnel and just props up lining cutting and secondary lining chassis, circumferential reinforcement is provided with inside the arch face just propping up lining cutting along described tunnel, the cambered surface that the top template of described secondary lining chassis adapts in the arch face just propping up lining cutting with described tunnel, the top template of described secondary lining chassis is arranged near the below of described circumferential reinforcement, the middle part of described circumferential reinforcement is provided with earth terminal, the described circumferential reinforcement of described earth terminal both sides is respectively equipped with fixed connecting piece, the bottom of described fixed connecting piece is welded in the top template of described secondary lining chassis, just prop up between lining cutting in the top template of described secondary lining chassis and tunnel and built quadratic lining cement.
Wherein, described circumferential reinforcement and described fixed connecting piece junction are arranged with insulation sleeve, described fixed connecting piece is that V-arrangement fixes reinforcing bar card, described V-arrangement is fixed reinforcing bar card and is fastened on described insulation sleeve, and two bottoms that described V-arrangement fixes reinforcing bar card are connected with the top template spot welding of described secondary lining chassis respectively.
Wherein, between described circumferential reinforcement and the top template of secondary lining chassis, multiple Concrete seat pad is arranged at intervals with.
Further, the spacing between adjacent two described Concrete seat pads is 3-5 rice.
Wherein, described earth terminal is bridge tunnel type earth terminal, and described earth terminal is arranged on the vault center line in tunnel.
Wherein, two described V-arrangements fix reinforcing bar card with the vault center line in tunnel for axis of symmetry is symmetrical arranged.
Wherein, also comprise ground rebar, two bottoms of described circumferential reinforcement weld together with described ground rebar respectively.
The present invention also provides a kind of tunnel vault earth terminal built-in process, and it utilizes the tunnel vault earth terminal pre-embedded device described in technique scheme, and it comprises the following steps:
S1, just prop up lining cutting in tunnel surface on surveying and locating, mark the installation site of earth terminal and the installation site of circumferential reinforcement;
S2, earth terminal is welded on circumferential reinforcement;
S3, on the circumferential reinforcement of earth terminal both sides each socket insulation sleeve, utilize V-arrangement to fix reinforcing bar card and be connected on insulation sleeve;
S4, the circumferential reinforcement of S3 is placed into the installation site of the determined circumferential reinforcement of S1 surveying and locating;
S5, on circumferential reinforcement at interval of 3-5 rice colligation one piece of Concrete seat pad, then two bottoms of circumferential reinforcement are welded together with ground rebar respectively;
S6, secondary lining chassis is moved to immediately below the circumferential reinforcement set by S5;
S7, risen by secondary lining chassis, the top template of secondary lining chassis and V-arrangement are fixed together with the bottom apical grafting of reinforcing bar card, and the top template of V-arrangement being fixed the bottom of reinforcing bar card and secondary lining chassis is spot-welded together, formation spot welding support and connection point;
S8, just to prop up between lining cutting in the top template of secondary lining chassis and tunnel and build concrete;
S9, after the intensity that the concrete of building reaches designing requirement, moved forward by secondary lining chassis, spot welding support and connection point is come off, and the top template of two bottoms and secondary lining chassis that V-arrangement fixes reinforcing bar card departs from, and completes the pre-buried of tunnel vault earth terminal.
Preferably, in S2, described earth terminal is L-type, and described earth terminal and described steel hoop adopt two-sided welding.
(3) beneficial effect
Compared with prior art, the present invention has the following advantages:
A kind of tunnel vault earth terminal pre-embedded device provided by the invention and built-in process thereof, by being respectively equipped with fixed connecting piece on the described circumferential reinforcement of earth terminal both sides, described fixed connecting piece is connected with the spot welding on secondary lining trolley formwork top, make earth terminal in concrete placings process, do not rotate and move, thus ensureing the accurately pre-buried of earth terminal.
Accompanying drawing explanation
Fig. 1 is the cross-sectional structure schematic diagram of a kind of tunnel vault earth terminal of the present invention pre-embedded device;
Fig. 2 is the annexation schematic diagram in a kind of tunnel vault earth terminal of the present invention pre-embedded device between earth terminal and circumferential reinforcement;
Fig. 3 is that in a kind of tunnel vault earth terminal of the present invention pre-embedded device, V-arrangement fixes the annexation schematic diagram between reinforcing bar card and insulation sleeve and circumferential reinforcement.
In figure: 1: tunnel just props up lining cutting; 2: the top template of secondary lining chassis; 3: circumferential reinforcement; 4: earth terminal; 5:V shape fixes reinforcing bar card; 6: insulation sleeve; 7: Concrete seat pad; 8: spot welding support and connection point; 9: ground rebar; 10: quadratic lining cement.
Detailed description of the invention
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following instance for illustration of the present invention, but is not used for limiting the scope of the invention.
In describing the invention, it should be noted that, term " " center ", " longitudinal direction ", " transverse direction ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, in describing the invention, except as otherwise noted, the implication of " multiple ", " many ", " many groups " is two or more.
As shown in Figure 1, for a kind of tunnel vault earth terminal pre-embedded device provided by the invention, it comprises tunnel and just props up lining cutting 1 and secondary lining chassis, circumferential reinforcement 3 is provided with inside the arch face just propping up lining cutting 1 along described tunnel, the cambered surface that the top template 2 of described secondary lining chassis adapts in the arch face just propping up lining cutting 1 with described tunnel, the top template 2 of described secondary lining chassis is arranged near the below of described circumferential reinforcement 3, the middle part of described circumferential reinforcement 3 is provided with earth terminal 4, the described circumferential reinforcement 3 of described earth terminal 4 both sides is respectively equipped with fixed connecting piece, the bottom of described fixed connecting piece is welded in the top template 2 of described secondary lining chassis, so that by firm for the position of described earth terminal 4, and just prop up between lining cutting 1 in the top template 2 of described secondary lining chassis and tunnel and built quadratic lining cement 10, thus make earth terminal 4 build in concrete process, do not rotate and move, ensure the accurately pre-buried of described earth terminal 4.
As Figure 2-3, described circumferential reinforcement 3 with the concrete connected mode of fixed connecting piece is: described circumferential reinforcement 3 is arranged with insulation sleeve 6 with described fixed connecting piece junction, described fixed connecting piece is preferably V-arrangement and fixes reinforcing bar card 5, described V-arrangement is fixed reinforcing bar card 5 and is fastened on described insulation sleeve 6, and two bottoms that described V-arrangement fixes reinforcing bar card 5 are connected with top template 2 spot welding of described secondary lining chassis respectively.
In order to protect described circumferential reinforcement 3; preferably between described circumferential reinforcement 3 and the top template 2 of secondary lining chassis, be arranged at intervals with multiple Concrete seat pad 7; utilize described Concrete seat pad 7 to be separated with the top template 2 of secondary lining chassis by described circumferential reinforcement 3, avoid both directly to contact and cause wearing and tearing.
Further, the spacing between adjacent two described Concrete seat pads 7 can be 3-5 rice.
Preferably, described earth terminal 4 is bridge tunnel type earth terminal 4, and described earth terminal 4 is arranged on the vault center line in tunnel, so that control the installation site of earth terminal 4.
Preferably, two described V-arrangements fix reinforcing bar card 5 with the vault center line in tunnel for axis of symmetry is symmetrical arranged.
In order to the installation of firm described circumferential reinforcement 3, this device is also provided with ground rebar 9, and two bottoms of described circumferential reinforcement 3 weld together with described ground rebar 9 respectively.
Present invention also offers a kind of built-in process of tunnel vault earth terminal, it utilizes the tunnel vault earth terminal pre-embedded device described in technique scheme, and it comprises the following steps:
S1, just prop up lining cutting 1 in tunnel surface on surveying and locating, mark the installation site of earth terminal 4 and the installation site of circumferential reinforcement 3;
S2, earth terminal 4 is welded on circumferential reinforcement 3;
S3, on the circumferential reinforcement 3 of earth terminal 4 both sides each socket insulation sleeve 6, utilize V-arrangement to fix reinforcing bar card 5 and be connected on insulation sleeve 6, make V-arrangement fix reinforcing bar card 5 and be connected together securely with circumferential reinforcement 3;
S4, the circumferential reinforcement 3 of S3 is placed into the installation site of the determined circumferential reinforcement 3 of S1 surveying and locating;
S5, on circumferential reinforcement 3 at interval of 3-5 rice colligation one piece of Concrete seat pad 7, then two bottoms of circumferential reinforcement 3 are welded together with ground rebar 9 respectively;
S6, move to secondary lining chassis set by S5 circumferential reinforcement 3 immediately below;
S7, secondary lining chassis to be risen, the top template 2 of secondary lining chassis and V-arrangement is made to fix together with the bottom apical grafting of reinforcing bar card 5, with electric welding machine just V-arrangement to fix the top template 2 of the bottom of reinforcing bar card 5 and secondary lining chassis spot-welded together, form spot welding support and connection point 8;
S8, just to prop up between lining cutting 1 in the top template 2 of secondary lining chassis and tunnel and build concrete;
S9, after the intensity that the concrete of building reaches designing requirement, secondary lining chassis is moved forward, spot welding support and connection point 8 is come off, and the top template 2 of two bottoms and secondary lining chassis that V-arrangement fixes reinforcing bar card 5 departs from, and completes the pre-buried of tunnel vault earth terminal 4.
Preferably, in S2, described earth terminal 4 is in L-type, and in order to improve the reliability of welding, described earth terminal 4 adopts two-sided welding with described steel hoop.
The present invention takes full advantage of being connected between the work flow of the secondary lining chassis technique pre-buried with the earth terminal 4 of tunnel vault, before the top template 2 of secondary lining chassis and tunnel are just propped up and are built concrete between lining cutting 1, earth terminal 4 and circumferential reinforcement 3 are fixed temporarily, ensure that earth terminal 4 is not moved building concrete operation process, after the intensity that the concrete of building reaches designing requirement, when secondary lining chassis being moved forward according to operating procedure, spot welding support and connection point 8 is made to come off dexterously, namely the accurate location of earth terminal 4 is completed, do not affect again normal construction operation program.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a tunnel vault earth terminal pre-embedded device, it is characterized in that, comprise tunnel and just prop up lining cutting and secondary lining chassis, circumferential reinforcement is provided with inside the arch face just propping up lining cutting along described tunnel, the cambered surface that the top template of described secondary lining chassis adapts in the arch face just propping up lining cutting with described tunnel, the top template of described secondary lining chassis is arranged near the below of described circumferential reinforcement, the middle part of described circumferential reinforcement is provided with earth terminal, the described circumferential reinforcement of described earth terminal both sides is respectively equipped with fixed connecting piece, the bottom of described fixed connecting piece is welded in the top template of described secondary lining chassis, just prop up between lining cutting in the top template of described secondary lining chassis and tunnel and built quadratic lining cement.
2. tunnel vault earth terminal pre-embedded device as claimed in claim 1, it is characterized in that, described circumferential reinforcement and described fixed connecting piece junction are arranged with insulation sleeve, described fixed connecting piece is that V-arrangement fixes reinforcing bar card, described V-arrangement is fixed reinforcing bar card and is fastened on described insulation sleeve, and two bottoms that described V-arrangement fixes reinforcing bar card are connected with the top template spot welding of described secondary lining chassis respectively.
3. tunnel vault earth terminal pre-embedded device as claimed in claim 2, is characterized in that, between described circumferential reinforcement and the top template of secondary lining chassis, be arranged at intervals with multiple Concrete seat pad.
4. tunnel vault earth terminal pre-embedded device as claimed in claim 3, it is characterized in that, the spacing between adjacent two described Concrete seat pads is 3-5 rice.
5. tunnel vault earth terminal pre-embedded device as claimed in claim 4, it is characterized in that, described earth terminal is bridge tunnel type earth terminal, and described earth terminal is arranged on the vault center line in tunnel.
6. tunnel vault earth terminal pre-embedded device as claimed in claim 5, it is characterized in that, two described V-arrangements fix reinforcing bar card with the vault center line in tunnel for axis of symmetry is symmetrical arranged.
7. tunnel vault earth terminal pre-embedded device as claimed in claim 6, it is characterized in that, also comprise ground rebar, two bottoms of described circumferential reinforcement weld together with described ground rebar respectively.
8. a tunnel vault earth terminal built-in process, is characterized in that, utilize the tunnel vault earth terminal pre-embedded device as described in any one of claim 1-7, it comprises the following steps:
S1, just prop up lining cutting in tunnel surface on surveying and locating, mark the installation site of earth terminal and the installation site of circumferential reinforcement;
S2, earth terminal is welded on circumferential reinforcement;
S3, on the circumferential reinforcement of earth terminal both sides each socket insulation sleeve, utilize V-arrangement to fix reinforcing bar card and be connected on insulation sleeve;
S4, the circumferential reinforcement of S3 is placed into the installation site of the determined circumferential reinforcement of S1 surveying and locating;
S5, on circumferential reinforcement at interval of 3-5 rice colligation one piece of Concrete seat pad, then two bottoms of circumferential reinforcement are welded together with ground rebar respectively;
S6, secondary lining chassis is moved to immediately below the circumferential reinforcement set by S5;
S7, risen by secondary lining chassis, the top template of secondary lining chassis and V-arrangement are fixed together with the bottom apical grafting of reinforcing bar card, and the top template of V-arrangement being fixed the bottom of reinforcing bar card and secondary lining chassis is spot-welded together, formation spot welding support and connection point;
S8, just to prop up between lining cutting in the top template of secondary lining chassis and tunnel and build concrete;
S9, after the intensity that the concrete of building reaches designing requirement, moved forward by secondary lining chassis, spot welding support and connection point is come off, and the top template of two bottoms and secondary lining chassis that V-arrangement fixes reinforcing bar card departs from, and completes the pre-buried of tunnel vault earth terminal.
9. tunnel vault earth terminal built-in process as claimed in claim 8, it is characterized in that, in S2, described earth terminal is L-type, and described earth terminal and described steel hoop adopt two-sided welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410763764.6A CN104453937B (en) | 2014-12-12 | 2014-12-12 | A kind of tunnel vault ground terminal pre-embedded device and built-in process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410763764.6A CN104453937B (en) | 2014-12-12 | 2014-12-12 | A kind of tunnel vault ground terminal pre-embedded device and built-in process thereof |
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| CN104453937A true CN104453937A (en) | 2015-03-25 |
| CN104453937B CN104453937B (en) | 2017-01-04 |
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| CN201410763764.6A Active CN104453937B (en) | 2014-12-12 | 2014-12-12 | A kind of tunnel vault ground terminal pre-embedded device and built-in process thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105673042A (en) * | 2016-03-30 | 2016-06-15 | 中铁工程装备集团有限公司 | Integrated grounding system of reinforced concrete segment tunnel |
| CN107387118A (en) * | 2017-07-17 | 2017-11-24 | 中铁隧道勘测设计院有限公司 | A kind of shield tunnel earthing or grounding means and its construction method |
| CN111041908A (en) * | 2019-12-18 | 2020-04-21 | 周江 | Track stray current grounding terminal positioning device and application thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105673042A (en) * | 2016-03-30 | 2016-06-15 | 中铁工程装备集团有限公司 | Integrated grounding system of reinforced concrete segment tunnel |
| CN107387118A (en) * | 2017-07-17 | 2017-11-24 | 中铁隧道勘测设计院有限公司 | A kind of shield tunnel earthing or grounding means and its construction method |
| CN111041908A (en) * | 2019-12-18 | 2020-04-21 | 周江 | Track stray current grounding terminal positioning device and application thereof |
| CN111041908B (en) * | 2019-12-18 | 2021-11-16 | 周江 | Track stray current grounding terminal positioning device and application thereof |
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| Publication number | Publication date |
|---|---|
| CN104453937B (en) | 2017-01-04 |
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Effective date of registration: 20171130 Address after: No. 1, No. 19, South Road, Rong Hua Road, Beijing economic and Technological Development Zone Co-patentee after: China Railway 22nd Construction Bureau Co., Ltd. Patentee after: China Railway 19th Bureau Group Co., Ltd. Address before: The 100176 Beijing economic and Technological Development Zone Ronghua Road No. 19 Patentee before: China Railway 19th Bureau Group Co., Ltd. |
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