CN104453937B - A kind of tunnel vault ground terminal pre-embedded device and built-in process thereof - Google Patents

A kind of tunnel vault ground terminal pre-embedded device and built-in process thereof Download PDF

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Publication number
CN104453937B
CN104453937B CN201410763764.6A CN201410763764A CN104453937B CN 104453937 B CN104453937 B CN 104453937B CN 201410763764 A CN201410763764 A CN 201410763764A CN 104453937 B CN104453937 B CN 104453937B
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CN
China
Prior art keywords
ground terminal
tunnel
circumferential reinforcement
lining
template
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Application number
CN201410763764.6A
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Chinese (zh)
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CN104453937A (en
Inventor
钟强
陈可新
岳超东
李金成
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中铁十九局集团有限公司
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Priority to CN201410763764.6A priority Critical patent/CN104453937B/en
Publication of CN104453937A publication Critical patent/CN104453937A/en
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Publication of CN104453937B publication Critical patent/CN104453937B/en

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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/73Means for mounting coupling parts to apparatus or structures, e.g. to a wall
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00Electrically-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
    • H01R4/58Electrically-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
    • H01R4/66Connections with the terrestrial mass, e.g. earth plate, earth pin

Abstract

The present invention relates to tunnel support technical field, disclose a kind of tunnel vault ground terminal pre-embedded device, it includes lining cutting and a secondary lining chassis at the beginning of tunnel, it is provided with circumferential reinforcement inside the arch face of at the beginning of described tunnel lining cutting, the top template of described secondary lining chassis props up, at the beginning of described tunnel, the cambered surface that the arch face of lining cutting adapts, the top template of described secondary lining chassis is arranged near the lower section of described circumferential reinforcement, the middle part of described circumferential reinforcement is provided with ground terminal, the described circumferential reinforcement of described ground terminal both sides is respectively equipped with fixing connector, the bottom of described fixing connector is welded in the top template of described secondary lining chassis, quadratic lining cement has been poured between a lining cutting at the beginning of the top template and tunnel of described secondary lining chassis;The invention also discloses the built-in process of a kind of tunnel vault ground terminal.The present invention can correct embedment ground terminal.

Description

A kind of tunnel vault ground terminal pre-embedded device and built-in process thereof

Technical field

The present invention relates to tunnel support technical field, particularly relate to a kind of II, III grade of country rock tunnel The pre-embedded device of non-structure reinforcing bar vault ground terminal and built-in process thereof in the lining construction in road.

Background technology

At present, in II, III grade of country rock location, apply when the tunnel that electric locomotive passes through, Owing to country rock is more firm, general secondary lining is not provided with liner structure reinforcing bar, but according to electric power The requirement of locomotive contact net, the tunnel vault passed through in electric locomotive starts to set at import 2 meters Put first ground terminal, the earth terminal that 2 spacing are 5 meters is set at interval of 45 meters later Son, ground terminal typically links together with the structure reinforcing bars in vault liner structure, with Reach the purpose of electric locomotive contact net reliable ground.In order to solve to be not provided with liner structure steel The problem with grounding of the tunnel vault of muscle, job site is to be not provided with liner structure steel at secondary lining By being separately provided the circumferential reinforcement extraction ground wire as contact net at the tunnel of muscle, at this Circumferential reinforcement top is provided with bridge tunnel type ground terminal, after the chassis of secondary lining is in place, The secondary lining casting space at this circumferential reinforcement place pre-set carries out concrete (coagulation Soil) pour, owing to this circumferential reinforcement does not has fixed pivot, often there is hoop when pouring concrete The movement of reinforcing bar and rotation, cause ground terminal to misplace, and even causes ground terminal directly to be buried Enter in concrete, it is impossible to search, have influence on being smoothed out of later stage engineering.

Summary of the invention

(1) to solve the technical problem that

How the technical problem to be solved in the present invention is at tunnel non-structure lengths of rebar correct embedment Ground terminal.

(2) technical scheme

In order to solve above-mentioned technical problem, the present invention provides a kind of tunnel vault ground terminal pre-buried Device, it includes lining cutting and a secondary lining chassis at the beginning of tunnel, along at the beginning of described tunnel lining cutting Be provided with circumferential reinforcement inside arch face, the top template of described secondary lining chassis in described tunnel The cambered surface that just arch face of a lining cutting adapts, the top template of described secondary lining chassis is near institute The lower section stating circumferential reinforcement is arranged, and the middle part of described circumferential reinforcement is provided with ground terminal, described Fixing connector, described fixing connection it is respectively equipped with on the described circumferential reinforcement of ground terminal both sides The bottom of part is welded in the top template of described secondary lining chassis, at described secondary lining platform Quadratic lining cement has been poured between a lining cutting at the beginning of the top template of car and tunnel.

Wherein, described circumferential reinforcement and described fixing connector junction are arranged with insulated sleeve, Described fixing connector is that V-arrangement fixes reinforcing bar card, and described V-arrangement is fixed reinforcing bar card and is fastened on described On insulated sleeve, described V-arrangement fix two bottoms of reinforcing bar card respectively with described secondary lining platform The top template spot welding of car connects.

Wherein, between the top template of described circumferential reinforcement and secondary lining chassis, interval is arranged There is multiple Concrete seat pad.

Further, the spacing between adjacent two described Concrete seat pads is 3-5 rice.

Wherein, described ground terminal is bridge tunnel type ground terminal, and described ground terminal is arranged on tunnel On the vault centrage in road.

Wherein, two described V-arrangements fix the reinforcing bar card vault centrage with tunnel for axis of symmetry pair Claim to arrange.

Wherein, also include ground rebar, two bottoms of described circumferential reinforcement respectively with described ground connection Reinforcement welding is together.

The present invention also provides for a kind of tunnel vault ground terminal built-in process, and it utilizes above-mentioned technology Tunnel vault ground terminal pre-embedded device described in scheme, it comprises the following steps:

S1, on the surface of lining cutting at the beginning of tunnel surveying and locating, mark the installation of ground terminal Position and the installation site of circumferential reinforcement;

S2, ground terminal is welded on circumferential reinforcement;

S3, on the circumferential reinforcement of ground terminal both sides one insulated sleeve of each socket, utilize V Shape is fixed reinforcing bar card and is connected on insulated sleeve;

S4, the circumferential reinforcement of S3 is placed into the installation of circumferential reinforcement determined by S1 surveying and locating Position;

S5, on circumferential reinforcement at interval of one piece of Concrete seat pad of 3-5 rice colligation, then by hoop steel Two bottoms of muscle weld together with ground rebar respectively;

S6, secondary lining chassis is moved to the underface of circumferential reinforcement set by S5;

S7, secondary lining chassis is risen, make the top template of secondary lining chassis solid with V-arrangement Determine the bottom apical grafting of reinforcing bar card together, V-arrangement is fixed bottom and the secondary lining platform of reinforcing bar card The top template of car is spot-welded together, forms spot welding and supports junction point;

S8, at the beginning of the top template and tunnel of secondary lining chassis, pour concrete between lining cutting;

S9, wait the concrete poured reach design require intensity after, by secondary lining chassis to reach Dynamic, make spot welding support junction point and come off, V-arrangement fixes two bottoms and the secondary lining platform of reinforcing bar card The top template of car departs from, and completes the pre-buried of tunnel vault ground terminal.

Preferably, in S2, described ground terminal is L-shaped, described ground terminal and described ring Shape reinforcing bar uses two-sided welding.

(3) beneficial effect

Compared with prior art, the invention have the advantages that

A kind of tunnel vault ground terminal pre-embedded device of present invention offer and built-in process thereof are logical Cross on the described circumferential reinforcement of ground terminal both sides, be respectively equipped with fixing connector, described fixing Connector is connected with the spot welding on secondary lining trolley formwork top so that ground terminal is at concrete placings During, do not rotate and move, thus ensure ground terminal pre-buried accurately.

Accompanying drawing explanation

Fig. 1 is the cross-sectional structure signal of the present invention a kind of tunnel vault ground terminal pre-embedded device Figure;

Fig. 2 is ground terminal and ring in one tunnel vault ground terminal pre-embedded device of the present invention Annexation schematic diagram between reinforcing bar;

Fig. 3 is that in one tunnel vault ground terminal pre-embedded device of the present invention, V-arrangement fixes reinforcing bar card And the annexation schematic diagram between insulated sleeve and circumferential reinforcement.

In figure: 1: a lining cutting at the beginning of tunnel;2: the top template of secondary lining chassis;3: ring To reinforcing bar;4: ground terminal;5:V shape fixes reinforcing bar card;6: insulated sleeve;7: concrete pad Block;8: spot welding supports junction point;9: ground rebar;10: quadratic lining cement.

Detailed description of the invention

Below in conjunction with the accompanying drawings and embodiment, the detailed description of the invention of the present invention is made the most in detail Describe.Following instance is used for illustrating the present invention, but is not limited to the scope of the present invention.

In describing the invention, " " center ", " longitudinally ", " horizontal it should be noted that term To ", " on ", D score, "front", "rear", "left", "right", " vertically ", " level ", " top ", Orientation or the position relationship of the instruction such as " end " " interior ", " outward " are based on orientation shown in the drawings Or position relationship, it is for only for ease of the description present invention and simplifies description rather than instruction or dark Show that device or the element of indication must have specific orientation, with specific azimuth configuration and behaviour Make, be therefore not considered as limiting the invention.

Additionally, in describing the invention, except as otherwise noted, " multiple ", " many ", " many Group " it is meant that two or more.

As it is shown in figure 1, a kind of tunnel vault ground terminal pre-embedded device provided for the present invention, It includes lining cutting 1 and a secondary lining chassis at the beginning of tunnel, along the arch of at the beginning of described tunnel lining cutting 1 Be provided with circumferential reinforcement 3 inside face, the top template 2 of described secondary lining chassis in described tunnel The cambered surface that the arch face of a lining cutting 1 at the beginning of road adapts, the top template 2 of described secondary lining chassis Arranging near the lower section of described circumferential reinforcement 3, the middle part of described circumferential reinforcement 3 is provided with earth terminal Son 4, is respectively equipped with fixing connection on the described circumferential reinforcement 3 of described ground terminal 4 both sides Part, the bottom of described fixing connector is welded on the top template 2 of described secondary lining chassis On, in order to the position of described ground terminal 4 is consolidated, and at described secondary lining chassis Quadratic lining cement 10 has been poured between a lining cutting 1 at the beginning of top template 2 and tunnel, so that Ground terminal 4, during pouring concrete, does not rotate and moves, it is ensured that described ground terminal 4 pre-buried accurately.

As Figure 2-3, described circumferential reinforcement 3 with the concrete connected mode of fixing connector is: Described circumferential reinforcement 3 and described fixing connector junction are arranged with insulated sleeve 6, described fixing Connector is preferably V-arrangement and fixes reinforcing bar card 5, described V-arrangement fix reinforcing bar card 5 be fastened on described absolutely On edge sleeve pipe 6, described V-arrangement fix two bottoms of reinforcing bar card 5 respectively with described secondary lining platform Top template 2 spot welding of car connects.

In order to protect described circumferential reinforcement 3, preferably at described circumferential reinforcement 3 and secondary lining chassis Top template 2 between be arranged at intervals with multiple Concrete seat pad 7, utilize described Concrete seat pad 7 by described Circumferential reinforcement 3 separates with the top template 2 of secondary lining chassis, it is to avoid both directly contact and cause Abrasion.

Further, the spacing between adjacent two described Concrete seat pads 7 can be 3-5 rice.

Preferably, described ground terminal 4 is bridge tunnel type ground terminal 4, and described ground terminal 4 sets Put on the vault centrage in tunnel, in order to control the installation site of ground terminal 4.

Preferably, two described V-arrangements fix the reinforcing bar card 5 vault centrage with tunnel as symmetry Axial symmetry is arranged.

In order to consolidate the installation of described circumferential reinforcement 3, this device is additionally provided with ground rebar 9, described Two bottoms of circumferential reinforcement 3 weld together with described ground rebar 9 respectively.

Present invention also offers the built-in process of a kind of tunnel vault ground terminal, it utilizes above-mentioned Tunnel vault ground terminal pre-embedded device described in technical scheme, it comprises the following steps:

S1, on the surface of lining cutting 1 at the beginning of tunnel surveying and locating, mark the peace of ground terminal 4 Holding position and the installation site of circumferential reinforcement 3;

S2, ground terminal 4 is welded on circumferential reinforcement 3;

S3, on the circumferential reinforcement 3 of ground terminal 4 both sides one insulated sleeve 6 of each socket, profit Fix reinforcing bar card 5 with V-arrangement to be connected on insulated sleeve 6, make V-arrangement fix reinforcing bar card 5 and hoop steel Muscle 3 is connected together securely;

S4, the circumferential reinforcement 3 of S3 is placed into the peace of circumferential reinforcement 3 determined by S1 surveying and locating Holding position;

S5, on circumferential reinforcement 3 at interval of one piece of Concrete seat pad 7 of 3-5 rice colligation, then by hoop Two bottoms of reinforcing bar 3 weld together with ground rebar 9 respectively;

S6, secondary lining chassis is moved to the underface of circumferential reinforcement 3 set by S5;

S7, by secondary lining chassis rise, make top template 2 and the V-arrangement of secondary lining chassis The bottom apical grafting of fixing reinforcing bar card 5 together, fixes the end of reinforcing bar card 5 with electric welding machine just V-arrangement Hold spot-welded together with the top template 2 of secondary lining chassis, form spot welding and support junction point 8;

S8, at the beginning of the top template 2 and tunnel of secondary lining chassis, pour concrete between lining cutting 1;

S9, wait the concrete poured reach design require intensity after, by secondary lining chassis to reach Dynamic, make spot welding support junction point 8 and come off, V-arrangement fixes two bottoms and the secondary lining of reinforcing bar card 5 The top template 2 of chassis departs from, and completes the pre-buried of tunnel vault ground terminal 4.

Preferably, in S2, described ground terminal 4 is L-shaped, in order to improve the reliability of welding, Described ground terminal 4 uses two-sided welding with described steel hoop.

The present invention takes full advantage of the work flow of secondary lining chassis and the ground connection of tunnel vault Linking between the technique that terminal 4 is pre-buried, in top template 2 and the tunnel of secondary lining chassis Before just pouring concrete between a lining cutting 1, ground terminal 4 and circumferential reinforcement 3 are fixed temporarily, protect Having demonstrate,proved ground terminal 4 and be not moved pouring concrete operation process, concrete to be poured reaches design to be wanted After the intensity asked, when secondary lining chassis being moved forward according to operating procedure, make dexterously a little Weldering supports junction point 8 and comes off, and i.e. completes being accurately positioned of ground terminal 4, is not just the most affecting Normal construction operation program.

The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, All within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, Should be included within the scope of the present invention.

Claims (8)

1. a tunnel vault ground terminal pre-embedded device, it is characterised in that include propping up at the beginning of tunnel Lining cutting and secondary lining chassis, be provided with circumferential reinforcement inside the arch face of at the beginning of described tunnel lining cutting, The top template of described secondary lining chassis in described tunnel at the beginning of the arch face of lining cutting adapt Cambered surface, the top template of described secondary lining chassis near the lower section of described circumferential reinforcement arrange, The middle part of described circumferential reinforcement is provided with ground terminal, at the described hoop of described ground terminal both sides Being respectively equipped with fixing connector on reinforcing bar, the bottom of described fixing connector is welded on described secondary In the top template of lining trolley, the top template at described secondary lining chassis is propped up at the beginning of tunnel Quadratic lining cement has been poured between lining cutting;Described circumferential reinforcement and described fixing connector junction Being arranged with insulated sleeve, described fixing connector is that V-arrangement fixes reinforcing bar card, and described V-arrangement is solid Determining reinforcing bar card to be fastened on described insulated sleeve, described V-arrangement fixes two bottoms of reinforcing bar card Top template spot welding with described secondary lining chassis is connected respectively.
2. tunnel vault ground terminal pre-embedded device as claimed in claim 1, it is characterised in that Multiple concrete it is arranged at intervals with between the top template of described circumferential reinforcement and secondary lining chassis Cushion block.
3. tunnel vault ground terminal pre-embedded device as claimed in claim 2, it is characterised in that Spacing between adjacent two described Concrete seat pads is 3-5 rice.
4. tunnel vault ground terminal pre-embedded device as claimed in claim 3, it is characterised in that Described ground terminal is bridge tunnel type ground terminal, and described ground terminal is arranged in the vault in tunnel On heart line.
5. tunnel vault ground terminal pre-embedded device as claimed in claim 4, it is characterised in that Two described V-arrangements are fixed reinforcing bar card and are symmetrical arranged for axis of symmetry with the vault centrage in tunnel.
6. tunnel vault ground terminal pre-embedded device as claimed in claim 5, it is characterised in that Also including ground rebar, two bottoms of described circumferential reinforcement are welded on described ground rebar respectively Together.
7. a tunnel vault ground terminal built-in process, it is characterised in that utilize right such as to want Seeking the tunnel vault ground terminal pre-embedded device described in any one of 1-6, it comprises the following steps:
Step S1, on the surface of lining cutting at the beginning of tunnel surveying and locating, mark ground terminal Installation site and the installation site of circumferential reinforcement;
Step S2, ground terminal is welded on circumferential reinforcement;
Step S3, on the circumferential reinforcement of ground terminal both sides one insulated sleeve of each socket, profit Fix reinforcing bar card with V-arrangement to be connected on insulated sleeve;
Step S4, the circumferential reinforcement of step S3 is placed into determined by step S1 surveying and locating The installation site of circumferential reinforcement;
Step S5, on circumferential reinforcement at interval of one piece of Concrete seat pad of 3-5 rice colligation, then by ring Weld together with ground rebar respectively to two bottoms of reinforcing bar;
Step S6, secondary lining chassis is moved to circumferential reinforcement set by step S5 just under Side;
Step S7, by secondary lining chassis rise, make top template and the V of secondary lining chassis Shape fixes the bottom apical grafting of reinforcing bar card together, and the bottom that V-arrangement is fixed reinforcing bar card serves as a contrast with secondary The top template of platform building cart is spot-welded together, forms spot welding and supports junction point;
Step S8, at the beginning of the top template and tunnel of secondary lining chassis, pour concrete between lining cutting;
Step S9, wait the concrete poured reach design require intensity after, by secondary lining chassis to Front movement, makes spot welding support junction point and comes off, and V-arrangement is fixed two bottoms of reinforcing bar card and served as a contrast with secondary The top template of platform building cart departs from, and completes the pre-buried of tunnel vault ground terminal.
8. tunnel vault ground terminal built-in process as claimed in claim 7, it is characterised in that In step s 2, described ground terminal is L-shaped, and described ground terminal is adopted with described circumferential reinforcement Use two-sided welding.
CN201410763764.6A 2014-12-12 2014-12-12 A kind of tunnel vault ground terminal pre-embedded device and built-in process thereof CN104453937B (en)

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 CN104453937A (en) 2015-03-25
CN104453937B true CN104453937B (en) 2017-01-04

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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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Families Citing this family (1)

* Cited by examiner, † Cited by third party
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

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6520718B1 (en) * 1998-11-27 2003-02-18 Shigeki Nagatomo, Et Al. Sardine-bone construction method for large-section tunnel
NO335669B1 (en) * 2011-06-21 2015-01-19 Stabinor As A method of manufacturing a tunnel, and structural elements of concrete to be used in the manufacture of tunnel sections for such tunnels.
CN203321555U (en) * 2013-03-11 2013-12-04 中铁二院工程集团有限责任公司 Supporting system for large cross section tunnel construction in soft geological environment
CN103485796B (en) * 2013-10-18 2015-06-17 四川省交通运输厅公路规划勘察设计研究院 Tunnel supporting structure across active fault
CN204371356U (en) * 2014-12-12 2015-06-03 中铁十九局集团有限公司 A kind of tunnel vault earth terminal pre-embedded device

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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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