CN105113535A - Prefabricated assembled tunnel joint structure and construction method thereof - Google Patents
Prefabricated assembled tunnel joint structure and construction method thereof Download PDFInfo
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- CN105113535A CN105113535A CN201510364567.1A CN201510364567A CN105113535A CN 105113535 A CN105113535 A CN 105113535A CN 201510364567 A CN201510364567 A CN 201510364567A CN 105113535 A CN105113535 A CN 105113535A
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Abstract
The invention relates to a prefabricated assembled tunnel joint structure and a construction method thereof, belongs to the municipal engineering technical field, and aims to solve the circumferential force transmission and waterproof problems of a prefabricated assembly unit tunnel structure; the prefabricated assembled tunnel joint structure is a tenon structure; the tunnel is formed by a plurality of prefabricated assemblies circumferentially spliced in sequence through joint structures; the prefabricated assembly comprises a prefabricated mid-wall unit, a prefabricated side-wall unit, a prefabricated tunnel top board structure, and a prefabricated tunnel bottom plate structure; the joint structure comprises a joint 1 and a joint 2; the adjacent prefabricated mid-wall units are fixedly connected through the joint 1; the adjacent prefabricated side-wall units are fixedly connected through the joint 2; the middle portion of the joint2 is provided with a water stop member; the construction method comprises the following steps: assembling prefabricated assemblies in a ground pit of a planned tunnel; mounting the joint structure, and setting a middle-buried steel edge water seal band in the middle portion of the joint2; pouring compensation contraction concrete in a gap of adjacent prefabricated assemblies.
Description
Technical field
The invention belongs to municipal engineering technical field, particularly a kind of joint design of precast splice type tunnel and construction method thereof.
Background technology
China's underpass adopts the construction method of integral cast-in-situ usually, and preceding method exists construction period longer, construction quality to be difficult to ensure, pollute a series of problems such as urban environment to a certain extent.In order to address these problems, underpass adopts the construction method of precast assembly imperative.But owing to being subject to the restriction of the factors such as transport, lifting, genuine precast assembly structure needs to arrange joint usually.Therefore, how providing a kind of easy construction, the joint design that effectively can solve the precast assembly tunnel of reasonable power transmission and waterproof and construction method thereof, is the technical problem that those skilled in the art need solution badly.
Summary of the invention
The object of the present invention is to provide a kind of joint design and construction method thereof of precast splice type tunnel, the waterproof genuine with satisfied employing precast assembly method construction and force request.
For solving the problems of the technologies described above, technical scheme of the present invention is as follows:
A kind of joint design of precast splice type tunnel, described joint design is tenon structure, described tunnel is spliced by described joint design successively hoop by some precast segments, described precast segment comprises prefabricated middle wall unit, prefabricated side wall unit, Precast Underpass top board structure and Precast Underpass base arrangement, described joint design comprises joint one and joint two, be fixedly connected with by described joint one between adjacent described prefabricated middle wall unit, be fixedly connected with by described joint two between adjacent described prefabricated side wall unit, the middle part of described joint two is also provided with waterstop member.
Further, described tenon structure is made by steel concrete.
Further, be respectively equipped with groove in the middle part of the two ends of described joint one, the middle part of the butt end of corresponding described prefabricated middle wall unit is provided with the protuberance corresponding with described groove.
The construction method of the genuine joint design of precast splice type, comprises the steps:
Step one, assembledly in the foundation ditch planning to build described tunnel complete described precast segment;
Step 2, be fixedly installed described joint one in the butt end of adjacent described prefabricated middle wall unit respectively, be fixedly installed described joint two in the butt end of adjacent described prefabricated side wall unit, and in the middle part of described joint two is arranged buried steel limit waterstop;
Build expansive concrete in step 3, gap between adjacent precast segment, described expansive concrete wraps described joint design, makes described adjacent precast segment form integrative-structure.
Further, described step one also comprises the main muscle of structure stress one and structure stress main muscle two interlaced arrangement of described precast segment.
Further, the main muscle one of described middle structure stress is provided with reinforcing bar connector.
Compared with prior art, the technique effect that the present invention is useful is as follows:
1, in the joint design in precast splice type tunnel that the embodiment of the present invention provides, joint design is tenon structure, tunnel is spliced by joint design successively hoop by some precast segments, precast segment comprises prefabricated middle wall unit, prefabricated side wall unit, Precast Underpass top board structure and Precast Underpass base arrangement, joint design comprises joint one and joint two, be fixedly connected with by joint one between adjacent prefabricated middle wall unit, be fixedly connected with by joint two between adjacent prefabricated side wall unit, the middle part of joint two is provided with waterstop member.By arranging tenon structure as joint design, the shear resistance of adjacent precast segment interface can be strengthened, thus ensure the hoop power transmission requirement of precast assembly underpass.In addition, assembled when meeting the prefabricated side wall unit in native face, waterstop member is set at the middle part of its joint two, can prevents the gap of underground water between adjacent precast segment from infiltrating genuine, thus solve the waterproof problem of contiguous prefabricated assembly interface in precast assembly underpass.
2, the construction method of the genuine joint design of the precast splice type that provides of the embodiment of the present invention, first assembledly in genuine foundation ditch precast segment is completed planning to build, and the junction between adjacent precast segment arranges joint design, this joint design is fixedly installed in precast segment respectively; Then buried steel limit waterstop in the middle part of joint two is arranged; Build expansive concrete in last gap between adjacent precast segment, fill up the gap between precast segment, make adjacent precast segment form the integrative-structure with stability under loading and waterproof effect.By direct in foundation ditch the assembled precast segment completing produce in factory, and joint design is set in the joint location of precast segment, and for waterproof requirement higher meet the prefabricated side wall unit in native face, buried steel limit waterstop in being provided with in its joint two, thus can prevent the joint design interface of underground water between adjacent precast segment from infiltrating in tunnel.And, expansive concrete is built on the joint design surface of the precast segment spliced, expansive concrete is made to wrap joint design, fill up the gap between adjacent precast segment, ensure that combining closely between joint design and precast segment, make adjacent precast segment form integrative-structure, thus avoid the space that joint design shrinks formation, thus define complete stressed and water-proof system.
Accompanying drawing explanation
Fig. 1 is the precast splice type underpass schematic cross-sectional view of one embodiment of the invention;
The partial enlarged drawing in A portion in Fig. 2 Fig. 1;
Fig. 3 is the partial enlarged drawing in B portion in Fig. 1;
Fig. 4 is the C-C sectional drawing of Fig. 2;
Fig. 5 is the D-D sectional drawing of Fig. 3.
In figure:
The prefabricated middle wall unit of 1-; The prefabricated side wall unit of 2-; 3-joint one; 4-joint two; 5-waterstop member; The main muscle one of 6-structure stress; The main muscle two of 7-structure stress; 8-reinforcing bar connector; 9-expansive concrete.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the joint design in the precast splice type tunnel that the present invention proposes and construction method thereof are described in further detail.According to the following describes and claims, advantages and features of the invention will be clearer.It should be noted that, accompanying drawing all adopts the form that simplifies very much and all uses non-ratio accurately, only in order to object that is convenient, the aid illustration embodiment of the present invention lucidly.For sake of convenience, hereinafter described " on ", D score is consistent with the upper and lower direction of accompanying drawing, but this can not become the restriction of technical solution of the present invention.
The invention provides a kind of joint design and construction method of precast assembly tunnel, for solving hoop power transmission and the waterproof problem of precast assembly underpass.
Joint design and the construction method thereof in precast splice type tunnel of the present invention is described in detail below in conjunction with Fig. 1 to Fig. 5.
Embodiment one
As shown in Figures 1 to 5, the joint design in precast splice type tunnel, joint design is tenon structure, tunnel is spliced by joint design successively hoop by some precast segments, precast segment comprises prefabricated middle wall unit 1, prefabricated side wall unit 2, Precast Underpass top board structure and Precast Underpass base arrangement, joint design comprises joint 1 and joint 24, connected by joint 1 between adjacent prefabricated middle wall unit 1, connected by joint 24 between adjacent prefabricated side wall unit 2, the middle part of joint 24 is provided with waterstop member 5.In the construction of precast assembly tunnel, i.e. prefabricated middle wall unit 1 and the setting parallel to each other of prefabricated side wall unit 2, Precast Underpass top board structure and Precast Underpass base arrangement parallel to each other, Precast Underpass top board structure is arranged perpendicular to prefabricated middle wall unit 1 and prefabricated side wall unit 2 respectively, Precast Underpass top board structure, prefabricated middle wall unit 1, Precast Underpass base arrangement and prefabricated side wall unit 2 head and the tail are in turn connected to form rectangular frame structure, thus form described underpass.At the scene during assembling construction, between adjacent precast segment, all leave gap between namely adjacent prefabricated middle wall unit 1 or between adjacent prefabricated side wall unit 2, the size in this gap and the size of joint design match.This joint design is tenon structure.By arranging tenon structure as joint design, the shear resistance of adjacent precast segment interface can be strengthened, thus ensure the hoop power transmission requirement of precast assembly underpass.In addition, assembled when meeting the prefabricated side wall unit 2 in native face, waterstop member 5 is set at the middle part of its joint 24, can prevents the gap of underground water between adjacent precast segment from infiltrating genuine, thus solve the waterproof problem of contiguous prefabricated assembly interface in precast assembly underpass.
Specifically, when produce in factory precast segment and joint design, the making material of precast segment is identical with the making material of tenon structure, is made by steel concrete.Be respectively equipped with groove in the middle part of the two ends of joint 1, the middle part of the butt end of corresponding prefabricated middle wall unit 1 is provided with the protuberance corresponding with groove.The structure of joint 24 and the structure difference of joint 1 are: the middle part of joint 24 is provided with waterstop member 5.This is because the prefabricated side wall unit 2 connected by joint 24 is positioned at meets native side, and it requires higher to water proof anti-seepage.Certainly, consider cost and convenience for construction, water-stopping structure 5 can be steel limit waterstop.
Accordingly, joint 1 and prefabricated middle wall unit 1, joint 24 and prefabricated side wall unit 2 build respectively be integrated for subsequent use.
Continue with reference to figure 2 and Fig. 4, certainly, in order to make the stressed integrality at interface place between adjacent precast segment, give full play to the effect of effective transmitting force of joint design, the main muscle of structure stress 1 (end is containing reinforcing bar connector 8) and structure stress main muscle 27 interlaced arrangement of precast segment.
Accordingly, the present embodiment additionally provides the construction method of the genuine joint design of a kind of precast splice type.Incorporated by reference to referring to figs. 1 to Fig. 5, the construction method of precast splice type joint design, comprises the following steps:
S001: according to job specfication, assembledly in the genuine soil body completes precast segment;
S002: be fixedly installed joint 1 in the butt end of adjacent prefabricated middle wall unit 1 respectively, is fixedly installed joint 24 in the butt end of adjacent prefabricated side wall unit 2, and in the middle part of joint 24 is arranged buried steel limit waterstop 5;
S003: build expansive concrete 9 in the gap between adjacent precast segment, expansive concrete 9 wraps joint design, makes adjacent precast segment form integrative-structure.
Specifically, the joint design interface that can prevent underground water between adjacent precast segment by buried steel limit waterstop 5 in arranging in the joint 24 of prefabricated side wall unit 2 of meeting native face infiltrates in tunnel.Expansive concrete 9 is built on the joint design surface of the precast segment spliced, expansive concrete 9 is made to wrap joint design, fill up the gap between adjacent precast segment, ensure that combining closely between joint design and precast segment, adjacent precast segment is made to form integrative-structure, thus avoid the space that joint design shrinks formation, thus define complete stressed and water-proof system.
Specifically, the main muscle of structure stress 1 of the precast segment in step one and structure stress main muscle 27 interlaced arrangement.The i.e. main muscle one, two (6,7) of the structure stress of prefabricated middle wall unit 1 and prefabricated side wall unit 2 all interlaced arrangement, thus ensure that the effective force effect of joint design.Certainly, the length requirement that the mechanical connecting joint that the length that stagger in the termination of the main muscle of structure stress 1 and the main muscle 27 of structure stress need meet code requirement staggers mutually.
In sum, in the joint design and construction method thereof in precast splice type tunnel provided by the invention, by arranging tenon structure as joint design, the shear resistance of adjacent precast segment interface can be strengthened, thus ensure the hoop power transmission requirement of precast assembly underpass.In addition, assembled when meeting the prefabricated side wall unit in native face, waterstop member is set at the middle part of its joint two, can prevents the gap of underground water between adjacent precast segment from infiltrating genuine, thus solve the waterproof problem of contiguous prefabricated assembly interface in precast assembly underpass.The construction method of the genuine joint design of precast splice type of the present embodiment, by direct in genuine the assembled precast segment completing produce in factory, in the joint location of precast segment, joint design is set, and for waterproof requirement higher meet the prefabricated side wall unit in native face, buried steel limit waterstop in being provided with in its joint two, thus can prevent the joint design interface of underground water between adjacent precast segment from infiltrating in tunnel.And, expansive concrete is built on the joint design surface of the precast segment spliced, expansive concrete is made to wrap joint design, fill up the gap between adjacent precast segment, ensure that combining closely between joint design and precast segment, make adjacent precast segment form integrative-structure, thus avoid the space that joint design shrinks formation, thus define complete stressed and water-proof system.
Foregoing description is only the description to present pre-ferred embodiments, any restriction not to the scope of the invention, and any change that the those of ordinary skill in field of the present invention does according to above-mentioned disclosure, modification, all belong to the protection domain of claims.
Claims (7)
1. the joint design in a precast splice type tunnel, it is characterized in that, described joint design is tenon structure, described tunnel is spliced by described joint design successively hoop by some precast segments, described precast segment comprises prefabricated middle wall unit, prefabricated side wall unit, Precast Underpass top board structure and Precast Underpass base arrangement, described joint design comprises joint one and joint two, be fixedly connected with by described joint one between adjacent described prefabricated middle wall unit, be fixedly connected with by described joint two between adjacent described prefabricated side wall unit, the middle part of described joint two is also provided with waterstop member.
2. the joint design in precast splice type tunnel as claimed in claim 1, it is characterized in that, described tenon structure is made by steel concrete.
3. the joint design in precast splice type tunnel as claimed in claim 1 or 2, is characterized in that, be respectively equipped with groove in the middle part of the two ends of described joint one, and the middle part of the butt end of corresponding described prefabricated middle wall unit is provided with the protuberance corresponding with described groove.
4. the joint design in precast splice type tunnel as claimed in claim 3, it is characterized in that, described waterstop member is steel limit waterstop.
5. the construction method of the genuine joint design of the precast splice type as described in any one of Claims 1-4, is characterized in that, comprise the steps:
Step one, assembledly in the foundation ditch planning to build described tunnel complete described precast segment;
Step 2, be fixedly installed described joint one in the butt end of adjacent described prefabricated middle wall unit respectively, be fixedly installed described joint two in the butt end of adjacent described prefabricated side wall unit, and in the middle part of described joint two is arranged buried steel limit waterstop;
Build expansive concrete in step 3, gap between adjacent precast segment, described expansive concrete wraps described joint design, makes described adjacent precast segment form integrative-structure.
6. the construction method of the genuine joint design of precast splice type as claimed in claim 5, it is characterized in that, described step one also comprises the main muscle of structure stress one and structure stress main muscle two interlaced arrangement of described precast segment.
7. the construction method of the genuine joint design of precast splice type as claimed in claim 6, it is characterized in that, the main muscle one of described structure stress is provided with reinforcing bar connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510364567.1A CN105113535A (en) | 2015-06-26 | 2015-06-26 | Prefabricated assembled tunnel joint structure and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510364567.1A CN105113535A (en) | 2015-06-26 | 2015-06-26 | Prefabricated assembled tunnel joint structure and construction method thereof |
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| CN105113535A true CN105113535A (en) | 2015-12-02 |
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| CN201510364567.1A Pending CN105113535A (en) | 2015-06-26 | 2015-06-26 | Prefabricated assembled tunnel joint structure and construction method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105673035A (en) * | 2016-01-25 | 2016-06-15 | 济南轨道交通集团有限公司 | Prefabricated shield node tunnel under condition of shield intersection and small spacing and construction method |
| CN106836231A (en) * | 2017-02-17 | 2017-06-13 | 上海市城市建设设计研究总院（集团）有限公司 | The assembling constructing method of big cross section precast construction in the deep big foundation pit of soft clay area |
| CN107965324A (en) * | 2017-09-29 | 2018-04-27 | 中铁二十三局集团有限公司 | A kind of assembled under-traverse tunnel |
| CN108487308A (en) * | 2018-03-12 | 2018-09-04 | 东北大学 | A kind of the H profile steel shock-proof connector device and construction method of prefabricated assembled piping lane |
| CN112900492A (en) * | 2021-01-26 | 2021-06-04 | 无锡市市政设施基础建设有限公司 | Connecting structure of prefabricated spliced tunnel |
-
2015
- 2015-06-26 CN CN201510364567.1A patent/CN105113535A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105673035A (en) * | 2016-01-25 | 2016-06-15 | 济南轨道交通集团有限公司 | Prefabricated shield node tunnel under condition of shield intersection and small spacing and construction method |
| CN105673035B (en) * | 2016-01-25 | 2017-11-17 | 济南轨道交通集团有限公司 | Shield crosses and the prefabricated tunnel of shield node and construction method during small spacing |
| CN106836231A (en) * | 2017-02-17 | 2017-06-13 | 上海市城市建设设计研究总院（集团）有限公司 | The assembling constructing method of big cross section precast construction in the deep big foundation pit of soft clay area |
| CN107965324A (en) * | 2017-09-29 | 2018-04-27 | 中铁二十三局集团有限公司 | A kind of assembled under-traverse tunnel |
| CN107965324B (en) * | 2017-09-29 | 2023-12-22 | 中铁二十三局集团有限公司 | Assembled underpass tunnel |
| CN108487308A (en) * | 2018-03-12 | 2018-09-04 | 东北大学 | A kind of the H profile steel shock-proof connector device and construction method of prefabricated assembled piping lane |
| CN112900492A (en) * | 2021-01-26 | 2021-06-04 | 无锡市市政设施基础建设有限公司 | Connecting structure of prefabricated spliced tunnel |
| CN112900492B (en) * | 2021-01-26 | 2022-04-26 | 无锡市市政设施基础建设有限公司 | Connecting structure of prefabricated spliced tunnel |
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Application publication date: 20151202 |
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