CN205188724U - Tram just constructs in succession in weak soil district subway protection zone - Google Patents
Tram just constructs in succession in weak soil district subway protection zone Download PDFInfo
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- CN205188724U CN205188724U CN201520980959.6U CN201520980959U CN205188724U CN 205188724 U CN205188724 U CN 205188724U CN 201520980959 U CN201520980959 U CN 201520980959U CN 205188724 U CN205188724 U CN 205188724U
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- subway
- longeron
- crossbeam
- weak soil
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Abstract
The utility model discloses a tram just constructs in succession in weak soil district subway protection zone, including drilling bored concrete pile, steel sleeve, crossbeam, longeron. The longeron is for directly bearing tram track load structure, and top and track be stiff and straight to be connect continuously, and the longeron sets up the crossbeam downwards, adopts rigid connection, and the crossbeam sets up the drilling bored concrete pile downwards, adopts rigid connection, and for protection subway safety, the bored concrete pile outer wall of holing sets up steel sleeve. Utility model can keep apart out with tram supporting course and subway completely, and tram's design in can effectual solution subway protection zone, but the subsiding of effective control tram body and subway adopt the steel sleeve protection can guarantee the safety of operation subway in the work progress, and structural stiffness is big in addition, and anti deformability is strong, and the deformation of structure just is even in succession, and is favourable to the even running of train.
Description
Technical field
The invention belongs to railway traffic engineering field, be specifically related to tram continuous rigid frame in subway protection district of a kind of weak soil district.
Background technology
Tram generally lays mainly with road surface; due to subway in urban development comparatively early; modern tram to intersect with subway or parallel route arrangement is inevitable; therefore there will be the problem such as design, construction of modern tram within the scope of subway protection district; current modern domestic tram is at the early-stage, develops in this respect and is also in blank out.
The general road laid along ground, often adopt the form of shallow foundation, this is the impact owing to generally can consider road during Metro Design, can the safety problem of iron construction contentedly, but tram belongs to track traffic, the otherness (particularly track traffic vibration characteristics) of road and track traffic, subway and tram structural safety and sedimentation are difficult to meet code requirement., from the transmission angle of load, there are two kinds of modes: deep foundation (pile foundation scheme) and shallow foundation (roadbed scheme), the influence degree of these two kinds of modes to subway is different in tram design in subway protection district.By the research to two kinds of modes; show to adopt deep foundation mode process relation between the two; can by tram bearing stratum and subway out completely isolated, effectively can solve the design of tram in subway protection district, effectively can control the sedimentation of tram body and subway.But the method brings another problem: construction period can produce certain impact to existing subway, need coordinate corresponding constructure scheme.
Summary of the invention
The object of the present invention is to provide tram continuous rigid frame in subway protection district of a kind of weak soil district; solve in subway protection district, particularly the tram in weak soil district and subway mutually vibrate between impact and ensure that structure can complete wanting of its function in whole life cycle.
The technical solution realizing the object of the invention is: tram continuous rigid frame in subway protection district of a kind of weak soil district; comprise longeron, crossbeam, bored pile and steel bushing; some longerons be arranged in parallel successively; longeron top is provided with rail; the longeron be parallel to each other is connected by the some crossbeams be parallel to each other; crossbeam is arranged on below longeron, and bored pile is distributed in bottom crossbeam, and bored pile outer wall is provided with steel bushing.
Further, described longeron and crossbeam adopt and are rigidly connected.
Further, described crossbeam and bored pile adopt and are rigidly connected.
Further, described longeron span is 10m ~ 20m, and beam-ends adopts little cantilever construction, and jib-length is 3m ~ 6m.
Further, when described longeron is single line beam, deck-siding is 2.8m ~ 4.5m, and the stake footpath of bored pile is 1.0m ~ 1.5m.
Further, when described longeron is two-wire beam, deck-siding is 6.6m ~ 8.8m, and the stake footpath of bored pile is 1.0m ~ 1.5m.
Compared with prior art, its remarkable advantage is in the present invention: (1) can be separated the impact that generation is vibrated in tram and subway two kinds of track traffics mutually, can ensure both safety and settlement request.
(2) by the protection of steel bushing, and spinning process is adopted, very little on the impact of underground undisturbed soil.
(3) rigidity of structure is large, and non-deformability is strong, and the distortion of continuous rigid frame is even, favourable to the even running of train.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of tram continuous rigid frame in subway protection district of the utility model weak soil district.
Fig. 2 is the profile of tram continuous rigid frame in subway protection district of the utility model weak soil district.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Composition graphs 1 and Fig. 2; tram continuous rigid frame in subway protection district of a kind of weak soil district, comprise longeron 1, crossbeam 2, bored pile 3 and steel bushing 4, some longerons 1 be arranged in parallel successively; longeron 1 top is provided with rail, and longeron 1 is the component directly bearing tram 5 train load.The longeron 1 be parallel to each other is connected by the some crossbeams be parallel to each other 2, and crossbeam 2 is arranged on below longeron 1, and longeron 1 is connected as a whole with crossbeam 2, concreting together both during construction.Bored pile 3 is distributed in bottom crossbeam 2, belongs to the basis of structure, and bored pile 3 outer wall is provided with steel bushing 4.Designing requirement pile-base supporting layer gos deep into 8m ~ 30m below at the bottom of subway 6 shield structure, pile foundation construction adopts steel bushing 4 to protect, steel bushing 4 defense-in-depth requires to go deep into 3m ~ 5m below at the bottom of subway 6 shield structure, for reducing the impact on subway 6, when steel bushing 4 is constructed, suggestion adopts spinning to bury, and steel bushing 4 is constructed in place, adopts mud off direct circulation engineering method soil taking hole forming afterwards, finally carry out hole operation clearly, install reinforcing cage hand-hole also carries out concrete perfusion pile; Last cast-in-place top continuous rigid frame.
Further, described longeron 1 adopts with crossbeam 2 and is rigidly connected.
Further, described crossbeam 2 adopts with bored pile 3 and is rigidly connected.
Further, described longeron 1 span is 10m ~ 20m, and beam-ends adopts little cantilever construction, and jib-length is 3m ~ 6m.
Further, when described longeron 1 is single line beam, deck-siding is 2.8m ~ 4.5m, and the stake footpath of bored pile 3 is 1.0m ~ 1.5m.
Further, when described longeron 1 is two-wire beam, deck-siding is 6.6m ~ 10.8m, and the stake footpath of bored pile 3 is 1.0m ~ 1.5m.
The outside 5m of metro shield outward flange is subway 6 specially protected area boundary line; outside 50m is boundary line, subway 6 urban conservation area; specially protected area boundary line is inaccurate builds any structure; build structure within the scope of 5m ~ 50m and must obtain the accreditation of subway 6 unit, within the scope of metro shield outward flange 5m ~ 20m, arrange structure affects larger on subway 6.
General processing method, tram 5 adopts roadbed, be shallow foundation, analyze after deliberation, later stage is due to the vibration of tram 5 and subway 6, tram 5 and subway 6 sedimentation all cannot ensure, the present invention can be separated the impact that generation is vibrated in two kinds of track traffics mutually, can ensure both safety and settlement request.The construction of general bored pile, disturbance is very large, be difficult to the safety of guarantee construction period subway 6, there is collapse hole or other fortuitous events possibly, and the requirement of subway 6 horizontal movement cannot be ensured, utilize technical scheme of the present invention can head it off, adopt the protection of steel bushing 4, and adopt spinning process, very little on the impact of underground undisturbed soil.Bridge generally processes and adopts simply supported beam system, the general STIFFNESS BOTH THE BASE of simply supported beam is difficult to meet design requirement on the one hand, on the other hand, the durability of bearing is also difficult to the requirement meeting design period, if want replacing time, owing to being bury people underground, replacing time difficulty is very large, eventually passes through and adopts continuous rigid frame pattern to solve the problem of bridge pad durability, from long-term benefit than choosing, both ensured the safety of existing subway 6, the requirement of durability can have been met again.
Embodiment 1
The utility model is tram continuous rigid frame in subway protection district of a kind of weak soil district, subway top section is positioned at: the firm structure of RC Continuous of one (4+12+3x14+12+4) m: 2 longerons 1 are set altogether for tram, the wide 3m of single line longeron 1, longeron 1 overall length 68m, 5 crossbeams 2 are set altogether, the long 6.6m ~ 10.8m of crossbeam 2, adjacent 2 crossbeam 2 ultimate range 14m under longeron, minimum range 12m, beam-ends cantilever 4m; Two single line longerons 1 connect as a whole by crossbeam 2, crossbeam arranges bored pile 32 times, bored pile 3 and crossbeam 2 adopt consolidation, the long 50m of stake, stake footpath 1.2m, bored pile 3 body outward flange is 5.5m to the outer peripheral distance of subway 6 shield structure, adopts steel bushing 4 to protect below at the bottom of subway 6 shield structure within the scope of 5m, prevents from having an impact to subway 6 in pile foundation pore forming process.
Claims (6)
1. tram continuous rigid frame in subway protection district of a weak soil district; it is characterized in that: comprise longeron (1), crossbeam (2), bored pile (3) and steel bushing (4); some longerons (1) be arranged in parallel successively; longeron (1) top is provided with rail; the longeron (1) be parallel to each other is connected by the some crossbeams be parallel to each other (2); crossbeam (2) is arranged on longeron (1) below; bored pile (3) is distributed in crossbeam (2) bottom, and bored pile (3) outer wall is provided with steel bushing (4).
2. tram continuous rigid frame in subway protection district of weak soil district according to claim 1, is characterized in that: described longeron (1) and crossbeam (2) adopt and be rigidly connected.
3. tram continuous rigid frame in subway protection district of weak soil district according to claim 1, is characterized in that: described crossbeam (2) and bored pile (3) adopt and be rigidly connected.
4. tram continuous rigid frame in subway protection district of weak soil district according to claim 1, it is characterized in that: described longeron (1) span is 10m ~ 20m, and beam-ends adopts little cantilever construction, jib-length is 3m ~ 6m.
5. tram continuous rigid frame in subway protection district of weak soil district according to claim 1, it is characterized in that: when described longeron (1) is for single line beam, deck-siding is 2.8m ~ 4.5m, and the stake footpath of bored pile (3) is 1.0m ~ 1.5m.
6. tram continuous rigid frame in subway protection district of weak soil district according to claim 1, it is characterized in that: when described longeron (1) is for two-wire beam, deck-siding is 6.6m ~ 8.8m, and the stake footpath of bored pile (3) is 1.0m ~ 1.5m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520980959.6U CN205188724U (en) | 2015-12-01 | 2015-12-01 | Tram just constructs in succession in weak soil district subway protection zone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520980959.6U CN205188724U (en) | 2015-12-01 | 2015-12-01 | Tram just constructs in succession in weak soil district subway protection zone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205188724U true CN205188724U (en) | 2016-04-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520980959.6U Expired - Fee Related CN205188724U (en) | 2015-12-01 | 2015-12-01 | Tram just constructs in succession in weak soil district subway protection zone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205188724U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107034744A (en) * | 2017-04-10 | 2017-08-11 | 中铁第四勘察设计院集团有限公司 | Concurrent operation high-speed railway separate type circuit road structure and its construction method |
| CN112211040A (en) * | 2020-09-29 | 2021-01-12 | 同济大学 | Composite pile plate structure of track-joining engineering roadbed and construction method |
-
2015
- 2015-12-01 CN CN201520980959.6U patent/CN205188724U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107034744A (en) * | 2017-04-10 | 2017-08-11 | 中铁第四勘察设计院集团有限公司 | Concurrent operation high-speed railway separate type circuit road structure and its construction method |
| CN112211040A (en) * | 2020-09-29 | 2021-01-12 | 同济大学 | Composite pile plate structure of track-joining engineering roadbed and construction method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160427 Termination date: 20211201 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |