CN102536262A - Prefabricated power tunnel and mounting method thereof - Google Patents
Prefabricated power tunnel and mounting method thereof Download PDFInfo
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- CN102536262A CN102536262A CN2012100560841A CN201210056084A CN102536262A CN 102536262 A CN102536262 A CN 102536262A CN 2012100560841 A CN2012100560841 A CN 2012100560841A CN 201210056084 A CN201210056084 A CN 201210056084A CN 102536262 A CN102536262 A CN 102536262A
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Abstract
The invention relates to a prefabricated power tunnel and a mounting method thereof. The prefabricated power tunnel comprises a plurality of series box culverts, wherein in two adjacent box culverts, a tenon is arranged at the adjacent end of one box culvert; a mortice matched with the tenon is formed in the adjacent end of the other box culvert; a stepped bump is arranged on the tenon; a stepped groove matched with the stepped bump is formed in the mortice; and the tenon and the mortice are nested. The two adjacent box culverts are lapped together by applying pre-stress on a construction site for tensioning. According to the invention, the power tunnel can be directly produced and prefabricated on the construction site.
Description
Technical field
The present invention relates to construction field, be specifically related to a kind of prefabricated electric power tunnel and mounting method thereof.
Background technology
In the construction of existing electric power tunnel, the modes of fluting monolithic reinforced concrete structures that adopt are constructed more, and this form of construction work is cast-in-place long in time limit, the foundation ditch backfill that delays, and construction is big to the city influence.
On the other hand, the cast-in-place following shortcoming that also has of slotting: laying of waterstop is random big, is difficult for guaranteeing the engineering waterproofing effect; Template and assembling reinforcement require high to the field worker qualification, because the present stage experienced operator reduces, workmanship is difficult to obtain guarantee all the more; Cast-in-place still having taked wooden form, and to timber, artificial waste greatly, the stealthy simultaneously deforestation amount that increases is runed counter to national policy; Big to labour demand, and the time of structure maintenance is long.
Summary of the invention
The present invention provides a kind of prefabricated electric power tunnel and mounting method thereof, direct prefabricated production electric power tunnel before can constructing at the scene.
A kind of prefabricated electric power tunnel; Comprise: the box culvert of a plurality of polyphones; In two adjacent box culverts, the abutting end of a box culvert is provided with tenon, and the abutting end of another box culvert is provided with the tongue-and-groove that matches with said tenon; And said tenon is provided with stepped convexity, and said tongue-and-groove is provided with the cascade groove that matches with said stepped convexity;
Wherein, tenon and tongue-and-groove tabling overlap adjacent two box culverts.
The end of said tenon and the end of said tongue-and-groove are preferably bite type installation respectively and strengthen angle steel;
And/or,
The ladder number of said stepped convexity is preferably more than 1.
When tenon and tongue-and-groove tabling, between said stepped convexity and cascade groove, be preferably and be provided with sealing collar.
Further, said sealing collar is preferably the wedge-shaped rubber sealing collar;
And/or,
The number of said sealing collar is preferably with the ladder number of said stepped convexity and equates that the set-up mode of said sealing collar is preferably: at each ladder said sealing collar is set all between said stepped convexity and the cascade groove.
Said tenon inwall place is preferably and is provided with grout hole, and said grout hole is preferably by tenon inwall place and extends to sealing collar position place.
Said grout hole is preferably and is no less than 2;
And/or
Said grout hole is preferably 2, is preferably the tenon place that is arranged on said box culvert top board and the base plate respectively, and said two grout holes are preferably and are positioned on the axis.
Arrangement of reinforcement in the said box culvert is preferably employing and also has the interior outside reinforcing bar of sidewall to merge into the stirrup form top board base plate, and adopts the form of two-sided welding to connect in the place that stirrup intersects.
The present invention also provides a kind of mounting method of arbitrary prefabricated electric power tunnel as stated, and this method may further comprise the steps:
A. in electric power tunnel is installed foundation ditch, build the concrete bed course, and on the concrete bed course, overlay sand cushion;
B. a plurality of said box culverts are moved in the foundation ditch;
C. according to the connected mode of tenon, tongue-and-groove a plurality of said box culverts are contacted, carry out pre-stress construction;
D. a plurality of said box culvert polyphone after pre-stress construction being accomplished is imbedded in the foundation ditch.
Before a plurality of box culverts were imbedded foundation ditch, step C was preferably further and comprises, embedding reinforcement angle steel is located in the place, end of the said tenon of a plurality of said box culverts after series connection and the end of said tongue-and-groove;
And/or,
In step C, be preferably 3-5 said box culvert polyphone, carry out pre-stress construction.
Among the step B, before according to the connected mode of tenon, tongue-and-groove a plurality of said box culverts being contacted, be preferably further and comprise: between said stepped convexity and cascade groove, sealing collar is set.
Through the technical scheme of various embodiments of the present invention, produce following good effect:
1, the present invention has reformed the construction technology of electric power tunnel, and the box culvert of electric power tunnel is made in factory in advance, and various electric embedded parts are also simultaneously pre-buried to main structure body; The two ends of box culvert are respectively equipped with tenon or tongue-and-groove, utilize the connected mode of tenon and tongue-and-groove that a plurality of box culverts are interconnected, and stepped boss is set on tenon simultaneously; The cascade groove of corresponding stepped boss is set on the tongue-and-groove, adopts this structure, after tenon inserts tongue-and-groove; Adjacent two box culverts connect tightr, in work progress, have removed the time of cast-in-place from; Directly prefabricated box culvert is moved into prefabricated electric power tunnel construction foundation pit (being the job site),, box culvert is closely connected through prestressed stretch-draw with a plurality of prefabricated box culvert series connection; A plurality of box culverts after will connecting then are embedded in the construction of promptly accomplishing electric power tunnel in the foundation ditch, therefore, shorten construction period; Prefabricated electric power tunnel is installed simple, and is easy to operate.
2, make the present invention adopt the form of prefabricated component to install, need not to take wooden form, reduced the use of timber and labour's demand.
3, the present invention has solved the waterproof problem of electric power tunnel through double-wedge rubber sealing collar and the mode that combines of reservation grout hole, and to from now on repairing, advantage is provided.
4, the present invention makes it be applicable to the reinforcement manner that batch production is produced through reinforcing bar in the box culvert being adopted the mode of stirrup form welding, has reduced the reinforcing bar kind, has reduced cost of production.Make it satisfy the requirement that batch production is produced.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; Below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art; Obviously, the accompanying drawing in below describing only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other embodiment and accompanying drawing thereof according to these accompanying drawing illustrated embodiments.
Fig. 1 is the structural representation of prefabricated electric power tunnel of the present invention under the state of installing;
Fig. 2 is the sectional view of prefabricated electric power tunnel first box culvert of the present invention and the second box culvert junction;
Fig. 3 is the reinforcement manner sketch map of existing box culvert;
Fig. 4 is the reinforcement manner sketch map of the first, the second box culvert among the present invention;
Fig. 5 carries out the structural representation of pre-stress construction for box culvert in the mounting method of the present invention;
Fig. 6 is the structural representation of main body pre-stress construction among the present invention;
Fig. 7 is the structural representation of tenon pre-stress construction among the present invention;
Wherein, 1 box culvert, 2 tenons, 201 convexities, 3 tongue-and-grooves, 301 grooves, 4 grout holes, 5 strengthen angle steel, 6 sealing collars, 7 reserve the stretch-draw hole, and 8 reserve between stretch-draw, and 101,102,103,104,105 and 106 are respectively different types of reinforcing bar.
The specific embodiment
Below will combine accompanying drawing that the technical scheme of various embodiments of the present invention is carried out clear, complete description, obviously, described embodiment only is a part of embodiment of the present invention, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are resulting all other embodiment under the prerequisite of not making creative work, the scope that all belongs to the present invention and protected.
The application's motion has solved all unfavorable factors at the cast-in-place electric power tunnel of municipal construction, and through optimal design, further strengthening aspects such as main body waterproof effect, reduction construction investment, has played good social benefit.
As depicted in figs. 1 and 2, in one embodiment of the invention, a kind of prefabricated electric power tunnel; Comprise: a kind of prefabricated electric power tunnel comprises: the box culvert 1 of a plurality of polyphones, in two adjacent box culverts 1; The abutting end of a box culvert 1 is provided with tenon 2; The abutting end of another box culvert 1 is provided with the tongue-and-groove 3 that matches with tenon 2, and tenon 2 is provided with stepped protrudingly 201, and tongue-and-groove 3 is provided with the cascade groove 301 that matches with stepped protruding 201; Wherein, tenon 2 and tongue-and-groove 3 tablings overlap adjacent two box culverts 1.
The present invention has reformed the construction technology of electric power tunnel through above-mentioned improvement, and the box culvert of electric power tunnel is made in factory in advance, and various electric embedded parts are also simultaneously pre-buried to main structure body; The two ends of box culvert are respectively equipped with tenon or tongue-and-groove, utilize the connected mode of tenon and tongue-and-groove that a plurality of box culverts are interconnected, and stepped boss is set on tenon simultaneously; The cascade groove of corresponding stepped boss is set on the tongue-and-groove, adopts this structure, after tenon inserts tongue-and-groove; Adjacent two box culverts connect tightr, in work progress, have removed the time of cast-in-place from; Directly prefabricated box culvert is moved into prefabricated electric power tunnel construction foundation pit (being the job site),, box culvert is closely connected through prestressed stretch-draw with a plurality of prefabricated box culvert series connection; A plurality of box culverts after will connecting then are embedded in the construction of promptly accomplishing electric power tunnel in the foundation ditch, therefore, shorten construction period; Prefabricated electric power tunnel is installed simple, and is easy to operate.
In various embodiments of the present invention; Because precast construction of the present invention has reduced the thickness of its wall; The thickness of tenon 2 and tongue-and-groove 3 has only its thickness again half the less than, can be in the transportation installation process in order to make it, not fragile; Can bear simultaneously the tension stress of erection stage again, in the end of tenon 2 and the end difference bite type of tongue-and-groove 3 reinforcement angle steel 5 is installed respectively; (in the upper left side of Fig. 2 middle tenon groove and the lower right side of tenon) protected.
In various embodiments of the present invention; In order to reach better waterproof effect; When tenon 2 and tongue-and-groove 3 tablings; Stepped protruding 201 and cascade groove 301 between be provided with sealing collar 6 (see figure 2)s, and stepped protruding 201 ladder number is 1,2 or a plurality of, sealing collar 6 is preferably double-deck wedge-shaped rubber sealing collar; And the number of sealing collar 6 equates that with stepped protruding 201 ladder number sealing collar 6 preferred set-up modes are: stepped protruding 201 and cascade groove 301 between at each ladder sealing collar 6 is set all, make sealing fully between tenon 2 and the tongue-and-groove 3; Further; In order to ensure (as shaking the back) under the situation about losing efficacy at sealing collar 6; The present invention is effective waterproof still, and 2 inwall places are provided with grout hole 4 at tenon, and grout hole 4 extends to place, sealing collar 6 positions by tenon 2 inwall places; When sealing collar 6 is double-deck wedge-shaped rubber sealing collar, preferably grout hole 4 is extended between two sealing collars 6; Grout hole 4 preferably is set to be no less than 2, and has at least 2 grout holes 4 to be arranged on tenon 2 places on box culvert 1 top board and the base plate, and two grout holes 4 are positioned at box culvert 1 longitudinally on the axis; When sealing collar 6 lost efficacy; Still can adopt the mode of perfusion sealing material to remedy (see figure 2), grout hole 4 is set to be no less than 2, can be when the perfusion sealing material; A grout hole 4 is used for exitting; Another grout hole 4 is used for pouring into sealing material, makes sealing material can get into the space between tenon 2 and the tongue-and-groove 3, replaces sealing collar 6 waterproof.
The present invention has solved the waterproof problem of electric power tunnel through double-wedge rubber sealing collar and the mode that combines of reservation grout hole, and to from now on repairing, advantage is provided.
Because prefabricated electric power tunnel (box culvert) belongs to plant produced; Kind and pattern to reinforcing bar require succinct as far as possible unification, and the reinforcement manner of common box culvert is as shown in Figure 3; Has main reinforcing bar (two kinds in the interior outside of top board base plate more than 4 kinds at least; The outside is two kinds in the sidewall, sees among Fig. 3 101,102,103 and 104), its reason is according to " Code for design of concrete structures " GB50010-2010; The anchoring of tensile reinforcement (outside horizontal bar) must reach the anchorage length of regulation and stipulation, and reinforcing bar is the downward anchoring of elbow; It is once little that the anchorage length of compressive reinforcement (inboard horizontal bar) is relatively wanted, and reinforcing bar is the elbow anchoring that makes progress; In various embodiments of the present invention, as shown in Figure 4, to the particularity of prefabricated units; We adopt the stirrup form to be welded the main reinforcing bar in the box culvert 1, are about to the top board base plate and also have the interior outside reinforcing bar of sidewall to merge into the stirrup pattern, and adopt the pattern of the two-sided welding of factory's field Welding in the place that stirrup intersects; Anchorage length of steel bar also satisfies code requirement like this; The only surplus roof and floor of main reinforcing bar pattern and two kinds of stirrups of sidewall (see among Fig. 4 105 and 106) are in minimizing workman's workload, when having improved productivity ratio; Also practiced thrift about 10% steel using amount (mainly being the anchorage length of steel bar saving); The main reinforcing bar of square box culvert structure is reduced to a kind, and the main reinforcing bar of rectangle box culvert structure also is no more than 2 kinds, makes the factory process quality can obtain reasonable guarantee.
The present invention makes it be applicable to the reinforcement manner that batch production is produced through reinforcing bar in the box culvert being adopted the mode of stirrup form welding, has reduced the reinforcing bar kind, has reduced cost of production.Make it satisfy the requirement that batch production is produced.
The mounting method of a kind of prefabricated electric power tunnel of the present invention, this method may further comprise the steps:
A. in electric power tunnel is installed foundation ditch, build the concrete bed course, and on the concrete bed course, overlay sand cushion;
B. a plurality of said box culverts 1 are moved in the foundation ditch;
C. according to the connected mode of tenon 2, tongue-and-groove 3 a plurality of said box culverts 1 are contacted, carry out pre-stress construction;
D. a plurality of said box culvert 1 polyphone after pre-stress construction being accomplished is imbedded in the foundation ditch.
In various embodiments of the present invention, before a plurality of box culverts 1 were imbedded foundation ditch, step C comprised that further embedding reinforcement angle steel 5 is located in the place, end of the said tenon 2 of a plurality of said box culverts after series connection and the end of said tongue-and-groove 3; And in step C, preferred mounting method is with behind 3-5 box culvert 1 polyphone, carries out pre-stress construction, like Fig. 5; Shown in 6,7, be specially, utilize reinforcing bar and screw rod to carry out stretch-draw through the reservation stretch-draw hole 7 on the box culvert 1; Wherein screw rod should carry out tension operation reserving between stretch-draw 8, is 50kn with the pre-stress rib stretching force size whenever, when carrying out prestressed stretch-draw; Stretching force is unsuitable excessive during stretch-draw first, should adopt twice stretch-draw to put in place, and the tension sequence symmetry is carried out; In engineering, after can as the case may be 3 to 5 joint box culverts being connected, carry out single tension.
In various embodiments of the present invention, in step B, before according to the connected mode of tenon 2, tongue-and-groove 3 a plurality of box culverts 1 being contacted, stepped protruding 201 and cascade groove 301 between sealing collar 6 is set, and before stretch-draw once more inspection confirm.
In addition, the present invention notes finished product protection when transportation, and the pad chock should be propped up in box culvert 1 bottom, should be with flexible material at interval between box culvert 1 and the box culvert 1; During on-the-spot the installation,, select the mobile crane of corresponding tonnage or straddle truck to install, answer the supporting capacity that checking computations mobile crane standing place reaches or the straddle truck orbital position is native, avoid foundation ditch is impacted according to field condition; Before the installation, on the C15 concrete cushion, should spread the thick sand bedding course of 30mm, inspection sealing collar 6 positions and quantity are installed appropriate to the occasionly with the tenon of box culvert 1, the connected mode of tongue-and-groove, tentatively after the contraposition, carry out pre-stress construction.
Through the technical scheme of various embodiments of the present invention, produce following good effect:
1, the present invention has reformed the construction technology of electric power tunnel, and the box culvert of electric power tunnel is made in factory in advance, and various electric embedded parts are also simultaneously pre-buried to main structure body; The two ends of box culvert are respectively equipped with tenon or tongue-and-groove, utilize the connected mode of tenon and tongue-and-groove that a plurality of box culverts are interconnected, and stepped boss is set on tenon simultaneously; The cascade groove of corresponding stepped boss is set on the tongue-and-groove, adopts this structure, after tenon inserts tongue-and-groove; Adjacent two box culverts connect tightr, in work progress, have removed the time of cast-in-place from; Directly prefabricated box culvert is moved into prefabricated electric power tunnel construction foundation pit (being the job site),, box culvert is closely connected through prestressed stretch-draw with a plurality of prefabricated box culvert series connection; A plurality of box culverts after will connecting then are embedded in the construction of promptly accomplishing electric power tunnel in the foundation ditch, therefore, shorten construction period; Prefabricated electric power tunnel is installed simple, and is easy to operate.
2, make the present invention adopt the form of prefabricated component to install, need not to take wooden form, reduced the use of timber and labour's demand.
3, the present invention has solved the waterproof problem of electric power tunnel through double-wedge rubber sealing collar and the mode that combines of reservation grout hole, and to from now on repairing, advantage is provided.
4, the present invention makes it be applicable to the reinforcement manner that batch production is produced through reinforcing bar in the box culvert being adopted the mode of stirrup form welding, has reduced the reinforcing bar kind, has reduced cost of production.Make it satisfy the requirement that batch production is produced.
The above is merely the specific embodiment of the present invention; But protection scope of the present invention is not limited thereto; The variation that any those skilled in the art of the present technique can expect in the scope of the technology contents that the present invention discloses easily or be equal to replacement scheme all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (10)
1. prefabricated electric power tunnel; It is characterized in that, comprising: the box culvert of a plurality of polyphones (1), in two adjacent box culverts (1); The abutting end of a box culvert (1) is provided with tenon (2); The abutting end of another box culvert (1) is provided with the tongue-and-groove (3) that matches with said tenon (2), and said tenon (2) is provided with stepped convexity (201), and said tongue-and-groove (3) is provided with the cascade groove (301) that matches with said stepped convexity (201);
Wherein, tenon (2) and tongue-and-groove (3) tabling overlap adjacent two box culverts.
2. prefabricated electric power tunnel as claimed in claim 1 is characterized in that, reinforcement angle steel (5) is installed in the end of the end of said tenon (2) and said tongue-and-groove (3) bite type respectively;
And/or,
The ladder number of said stepped convexity (201) is more than 1.
3. prefabricated electric power tunnel as claimed in claim 1 is characterized in that, when tenon (2) and tongue-and-groove (3) tabling, between said stepped convexity (201) and cascade groove (301), is provided with sealing collar (6).
4. prefabricated electric power tunnel as claimed in claim 3 is characterized in that, said sealing collar (6) is the wedge-shaped rubber sealing collar;
And/or,
The number of said sealing collar (6) equates that with the ladder number of said stepped convexity (201) set-up mode of said sealing collar (6) is: at each ladder said sealing collar (6) is set all between said stepped convexity (201) and the cascade groove (301).
5. prefabricated electric power tunnel as claimed in claim 4 is characterized in that, said tenon (2) inwall place is provided with grout hole (4), and said grout hole (4) extends to place, sealing collar (6) position by tenon (2) inwall place.
6. prefabricated electric power tunnel as claimed in claim 5 is characterized in that, said grout hole (4) is for being no less than 2;
And/or
Said grout hole (4) is two, and the tenon (2) that is separately positioned on said box culvert (1) top board and the base plate is located, and two said grout holes (4) are positioned on the axis.
7. prefabricated electric power tunnel as claimed in claim 1 is characterized in that, the arrangement of reinforcement in the said box culvert (1) adopts also has the interior outside reinforcing bar of sidewall to merge into the stirrup form top board base plate, and adopts the form of two-sided welding to connect in the place that stirrup intersects.
8. the mounting method like each described prefabricated electric power tunnel of claim 1-7 is characterized in that, this method may further comprise the steps:
A. in electric power tunnel is installed foundation ditch, build the concrete bed course, and on the concrete bed course, overlay sand cushion;
B. a plurality of said box culverts (1) are moved in the foundation ditch;
C. according to the connected mode of tenon (2), tongue-and-groove (3) a plurality of said box culverts (1) are contacted, carry out pre-stress construction;
D. a plurality of said box culvert (1) polyphone after pre-stress construction being accomplished is imbedded in the foundation ditch.
9. the mounting method of prefabricated electric power tunnel as claimed in claim 8; It is characterized in that; Before a plurality of box culverts (1) were imbedded foundation ditch, step C comprised that further embedding reinforcement angle steel (5) is located in the place, end of the said tenon (2) of a plurality of said box culverts after series connection and the end of said tongue-and-groove (3);
And/or,
In step C, be with 3-5 said box culvert (1) polyphone, carry out pre-stress construction.
10. the mounting method of prefabricated electric power tunnel as claimed in claim 8; It is characterized in that; Among the step B; Before according to the connected mode of tenon (2), tongue-and-groove (3) a plurality of said box culverts (1) being contacted, further comprise: between said stepped convexity (201) and cascade groove (301), sealing collar (6) is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012100560841A CN102536262A (en) | 2012-03-06 | 2012-03-06 | Prefabricated power tunnel and mounting method thereof |
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| CN2012100560841A CN102536262A (en) | 2012-03-06 | 2012-03-06 | Prefabricated power tunnel and mounting method thereof |
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| CN2012100560841A Pending CN102536262A (en) | 2012-03-06 | 2012-03-06 | Prefabricated power tunnel and mounting method thereof |
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Cited By (5)
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| CN104947709A (en) * | 2015-04-15 | 2015-09-30 | 上海市政工程设计研究总院（集团）有限公司 | Pre-assembled single-compartment municipal tunnel and construction method thereof |
| CN105673036A (en) * | 2016-01-25 | 2016-06-15 | 济南轨道交通集团有限公司 | Prefabricated shield node tunnel during longitudinal shield crossing and construction method |
| CN105822320A (en) * | 2016-04-29 | 2016-08-03 | 姜守信 | Thrust-type electric power tunnel and pusher of thrust-type electric power tunnel |
| CN107989070A (en) * | 2017-12-30 | 2018-05-04 | 中建四局第五建筑工程有限公司 | A kind of prefabricated piping lane device and its construction method |
| CN114319163A (en) * | 2021-11-24 | 2022-04-12 | 中交二公局萌兴工程有限公司 | Assembled box culvert |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104947709A (en) * | 2015-04-15 | 2015-09-30 | 上海市政工程设计研究总院（集团）有限公司 | Pre-assembled single-compartment municipal tunnel and construction method thereof |
| CN105673036A (en) * | 2016-01-25 | 2016-06-15 | 济南轨道交通集团有限公司 | Prefabricated shield node tunnel during longitudinal shield crossing and construction method |
| CN105822320A (en) * | 2016-04-29 | 2016-08-03 | 姜守信 | Thrust-type electric power tunnel and pusher of thrust-type electric power tunnel |
| CN107989070A (en) * | 2017-12-30 | 2018-05-04 | 中建四局第五建筑工程有限公司 | A kind of prefabricated piping lane device and its construction method |
| CN114319163A (en) * | 2021-11-24 | 2022-04-12 | 中交二公局萌兴工程有限公司 | Assembled box culvert |
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Application publication date: 20120704 |