CN109518722A - The short underpass structure and its construction method of newly-built basement and existing subway station - Google Patents
The short underpass structure and its construction method of newly-built basement and existing subway station Download PDFInfo
- Publication number
- CN109518722A CN109518722A CN201910058091.7A CN201910058091A CN109518722A CN 109518722 A CN109518722 A CN 109518722A CN 201910058091 A CN201910058091 A CN 201910058091A CN 109518722 A CN109518722 A CN 109518722A
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- Prior art keywords
- construction
- underpass
- horizontal beam
- injected hole
- short
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Links
- 238000010276 construction Methods 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000009412 basement excavation Methods 0.000 claims abstract description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 36
- 238000007569 slipcasting Methods 0.000 claims description 19
- 229910052742 iron Inorganic materials 0.000 claims description 18
- 239000002002 slurry Substances 0.000 claims description 15
- 238000005553 drilling Methods 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 238000013461 design Methods 0.000 claims description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 4
- 238000007711 solidification Methods 0.000 claims description 4
- 230000008023 solidification Effects 0.000 claims description 4
- 244000144985 peep Species 0.000 claims description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 2
- 239000001569 carbon dioxide Substances 0.000 claims description 2
- 238000005266 casting Methods 0.000 claims description 2
- 239000003818 cinder Substances 0.000 claims description 2
- 239000004744 fabric Substances 0.000 claims description 2
- 239000004746 geotextile Substances 0.000 claims description 2
- 239000011440 grout Substances 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 claims description 2
- 238000012545 processing Methods 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 230000005641 tunneling Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The present invention provides a kind of short underpass structure that newly-built basement is connect with existing subway station, the structure includes several horizontal beams and two collar tie beams, horizontal beam extends along underpass excavation direction and is uniformly distributed in the upside and the left and right sides of excavated section, and collar tie beam is located on the section at horizontal beam both ends.The present invention further provides the construction methods of a kind of newly-built basement and the short underpass structure of existing subway station.The present invention solves the connectivity problem of newly-built basement Yu existing subway station, construction method belongs to subsurface excavation method, it avoids the possible traffic jam of open-cut, earth volume huge and the series of problems such as noise is big, more secure working face is provided for engineering construction, effectively enhance the stability in tunnel.
Description
Technical field
The invention belongs to construction technology in geotechnical engineering field, it is related to the short underpass knot connected between two underground structures
Structure and construction method, and in particular to the short underpass between a kind of newly-built basement and existing subway station is connected to and its construction party
Method.
Background technique
Develop people to utilizing more and more, social development with causing city overhead on city space with society
Between heavy congestion, people in order to improve this crowded space, constantly build high buildings and large mansions while also sufficiently city
The underground space uses.Generally high-rise and super high rise building can all build underground structure such as underground parking, underground
Commercial street, underground supermarket etc., have also built subway in city in order to alleviate the traffic problems of congestion, and subway will also tend to and week
The underground structure on side is closely linked.But subway and the building on periphery are not often to build together, it is mostly built
At underground structure construction when often the connection with subway is not taken into account, in order to be built with periphery when subway station is built
It builds object underground and generates connection, generally require to connect with periphery underground structure by underpass.
However, often surrounding enviroment are complicated, and such as doing cut and cover tunneling tunnel can break when being built in city and building subterranean tunnel
Bad earth's surface traffic brings great congestion to urban transportation, does shallow mining method tunnel its stability of strict control again, to applying
Work brings great challenge.Therefore, by pre-grouting reinforcing must be done around tunneling, consolidating surrounding soil in advance in advance
It is significant in Tunnel Engineering construction.
Summary of the invention
In order to overcome the shortage of prior art, the present invention provides a kind of construction skill that newly-built basement is connected to existing subway station
Art, the construction of connection underpass is difficult between two underground structures to solve in Practical Project construction, and when constructing tunnel exists very big
The problem of security risk and its stability problem, keep engineering practice of construction more secure etc..
The present invention realizes that the technical solution of above-mentioned purpose is as follows:
A kind of short underpass structure of newly-built basement and existing subway station, which is characterized in that the structure includes several
Horizontal beam and two collar tie beams, the horizontal beam along underpass excavate direction extends and be uniformly distributed in the upside of excavated section with
The left and right sides, the collar tie beam are located on the section at horizontal beam both ends.
Further, the horizontal beam is connected with collar tie beam, and horizontal beam is vertical with collar tie beam cross section, and horizontal beam is transversal
Face is circle, and horizontal beam diameter is 150-300mm, and the center of horizontal beam is not away from being preferably greater than 2.0 times of its diameter.
Further, the length of the short underpass structure is not more than 15 meters.
Further, the ring beam reinforcing steel bar should meet existing national standards " Code for design of concrete structures " GB 50010
Constructional reinforcement requirement to beam.
Further, the horizontal beam is mainly made of injected hole, fashioned iron and the slurries of solidification, and the fashioned iron is inserted into slip casting
Then Kong Zhong injects slurries in injected hole.
The fashioned iron is selected from H profile steel or channel steel, and fashioned iron is arranged along injected hole central axes.
Preferably, injected hole 150-300mm, preferably 200mm are protruded in the fashioned iron both ends, and connect with collar tie beam.
It is highly preferred that being disposed on fashioned iron to middle bracket, the quantity and specification of the centering bracket are according to injected hole
Length and size determine.
Further, the section of the short underpass is box, round or ellipse.
The present invention further provides the construction method of a kind of newly-built basement and the short underpass structure of existing subway station,
Specifically:
1) drilling of the injected hole of underpass and horizontal beam is determined first between existing subway station and newly-built basement
Position；
2) rigging up carries out the drilling construction of single injected hole；
3) fashioned iron is inserted into injected hole；
4) Grouting Pipe is arranged in and is formed by progress slip casting operation in injected hole, and plug-hole forms horizontal beam；
And 4) 5) step 2), 3) is repeated, until setting horizontal beam number is completed in construction；
6) after grout curing in all injected holes, the construction of collar tie beam is carried out according to code requirement；
7) underpass is excavated according to code requirement after collar tie beam reaches requirement of strength design, until excavating to the ground of setting
Layer strengthening length.
In the present invention, to prevent string hole, the 2) into the 4) step, the method for taking the job-hopping construction of one hole of interval is that is, complete
After the drilling construction in first slip casting duct and slip casting operation, the position for being spaced a duct carries out repeating construction and operation,
Until completing slip casting duct drilling construction and the slip casting operation of all settings.
The present invention, the drilling construction include that the upside that section is moved towards along engineering excavation and the left and right sides carry out and set
Count the construction method of the parallel directional drilling in tunnel and scarfing cinder formation duct.
The 3) fashioned iron described in step be selected from H profile steel or channel steel.
Wherein, the 4) slip casting operation specific method described in step be: slurries observation is reserved at the top of injected hole entrance end
Hole, carry out slip casting using grouting pump: one end low from injected hole is toward high one end slip casting, until in the slurries peep hole of entrance end
Until flowing out denseer slurries, the injected hole for two sides of first constructing, to intermediate direction propelling construction.
Further, the slip casting operation can be handled for single fluid grouting or two fluid grouting.
Further, the slip casting operation is once grouting or multiple slip casting.
In the present invention, the construction method of the collar tie beam is that processing assembling reinforcement first, then installation template, pacifies to template
After the completion of dress, casting concrete, form removal when concrete strength reaches 2.5Mpa, last curing concrete, concrete support
Shield covers sprinkling maintenance using plastic cloth or geotextiles, keeps wet.
The beneficial effects of the present invention are: the present invention solves newly-built basement and existing subway station connectivity problem, solve
The problems such as cut and cover tunneling is to earth's surface bring traffic jam and noise, more secure working face is provided for engineering construction, is led to
The working face that staff is safer in Practical Project construction can be provided by crossing the application, effectively enhance the stability in tunnel.
Detailed description of the invention
Fig. 1 is box schematic diagram of underground passage structure.
Fig. 2 is the A-A' sectional view of Fig. 1；
Fig. 3 is horizontal beam drawing；
In figure, the ground 1-；2- underpass；3- horizontal beam；4- collar tie beam；The existing subway station of 5-；6- creates basement；7- type
Steel；8- slurries；9- centering bracket.
Specific embodiment
Structure of the invention is further detailed with reference to the accompanying drawing, these attached drawings are of the invention preferred
Specific embodiment is not limitation of the present invention.
The short underpass structure of a kind of newly-built basement and existing subway station as shown in Figs. 1-2, if the structure includes
Solid carbon dioxide flat-topped ridge 3 and two collar tie beams 4, horizontal beam 3 along underpass 2 excavate direction extends and be uniformly distributed on the upside of excavated section with
The left and right sides, collar tie beam 4 are located on the section at 3 both ends of horizontal beam, and horizontal beam 3 is connected with collar tie beam 4.
Horizontal beam drawing as shown in Figure 3, horizontal beam 3 are mainly made of the slurries 8 of injected hole, fashioned iron 7 and solidification, type
Steel 7 is inserted into injected hole, and slurries 8 are then injected in injected hole, and fashioned iron 7 is arranged along injected hole central axes.
The diameter of horizontal beam 3 is 150mm, and the center of horizontal beam 3 is away from for 300mm；Fashioned iron 7 is H profile steel, fashioned iron specification are as follows:
Duct 200mm is protruded at 100*100*6*8, Unit Weight 17.2kg/m, area of section 21.9mm2,7 both ends of fashioned iron；Circle
4 width of beam is 300mm, is highly 200mm.
With reference to the accompanying drawing to the construction party of newly-built basement of the invention and the short underpass structure of existing subway station
Method is specifically described, construction method are as follows:
1) underpass 2 and injected hole bore position are determined first between existing subway station 5 and newly-built basement 6；
2) rigging up carries out the drilling construction of single injected hole；
3) fashioned iron 7 is inserted into injected hole；
4) Grouting Pipe is arranged in and is formed by progress slip casting operation in injected hole, and plug-hole forms horizontal beam；
And 4) 5) step 2), 3) is repeated, until the quantity of setting horizontal beam 3 is completed in construction；
6) after the solidification of all injected hole slurries 8, the construction of collar tie beam 4 is carried out according to code requirement；
7) underpass 2 is excavated according to code requirement after collar tie beam 4 reaches requirement of strength design, until excavating to setting
Stratum consolidation length.
The present invention can also have other a variety of specific embodiments, without deviating from the spirit and substance of the present invention,
Those skilled in the art can make various corresponding changes and modifications, but these corresponding changes and change according to the present invention
Shape all should belong to the protection scope of the claims in the present invention.
Claims (10)
1. the short underpass structure of a kind of newly-built basement and existing subway station, which is characterized in that if the structure includes solid carbon dioxide
Flat-topped ridge and two collar tie beams, the horizontal beam extend along underpass excavation direction and are uniformly distributed in the upside and a left side of excavated section
Right two sides, the collar tie beam are located on the section at horizontal beam both ends.
2. short underpass structure according to claim 1, which is characterized in that the horizontal beam is connected with collar tie beam,
Horizontal beam is vertical with collar tie beam cross section.
3. short underpass structure according to claim 1 or 2, which is characterized in that the horizontal beam cross section is circle
Shape, horizontal beam diameter are 150-300mm, and the center of horizontal beam is away from 2.0 times no more than its diameter.
4. short underpass structure according to claim 1, which is characterized in that the underpass structure length is not more than
15 meters.
5. short underpass structure according to claim 1, which is characterized in that the horizontal beam is mainly by injected hole, type
Steel and the slurries of solidification composition, the fashioned iron are inserted into injected hole, slurries are then injected in injected hole, the fashioned iron both ends are convex
Injected hole 150-300mm out, and connect with collar tie beam, it is disposed on fashioned iron to middle bracket.
6. a kind of construction method of short underpass structure as described in claim 1, which is characterized in that specifically:
1) the injected hole bore position of underpass and horizontal beam is determined first between existing subway station and newly-built basement；
2) rigging up carries out the drilling construction of single injected hole；
3) fashioned iron is inserted into injected hole；
4) Grouting Pipe is arranged in progress slip casting operation in injected hole, and plug-hole forms horizontal beam；
And 4) 5) step 2), 3) is repeated, until setting horizontal beam number is completed in construction；
6) after all injected holes are grout curing, the construction of collar tie beam is carried out according to code requirement；
7) underpass is excavated according to code requirement after collar tie beam reaches requirement of strength design, added until excavating to the stratum of setting
Gu length.
7. construction method according to claim 6, which is characterized in that the 2) into the 4) step, one hole of interval is taken to jump
The method of slot construction, that is, after drilling construction and the slip casting operation of completing first duct, the position for being spaced a duct carries out weight
Multiple construction and operation, until completing injected hole drilling construction and the slip casting operation of all settings.
8. construction method according to claim 6, which is characterized in that the drilling construction includes walking along engineering excavation
The directional drilling parallel with design tunnel is carried out to the upside of section and the left and right sides and scarfing cinder forms the construction method of injected hole.
9. construction method according to claim 6, which is characterized in that the slip casting operation specific method is: in slip casting
Slurries peep hole is reserved at the top of the entrance end of hole, and slip casting is carried out using grouting pump: being infused toward high one end one end low from injected hole
Slurry, until the denseer slurries of outflow in the slurries peep hole of entrance end, the injected hole for two sides of first constructing is pushed away to intermediate direction
Into construction.
10. construction method according to claim 6, which is characterized in that the construction method of the collar tie beam is that processing first is tied up
It wire-ties, then installation template, after template is installed, casting concrete, dismounting when concrete strength reaches 2.5Mpa
Template, last curing concrete, concrete curing cover sprinkling maintenance using plastic cloth or geotextiles, keep wet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910058091.7A CN109518722A (en) | 2019-01-22 | 2019-01-22 | The short underpass structure and its construction method of newly-built basement and existing subway station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910058091.7A CN109518722A (en) | 2019-01-22 | 2019-01-22 | The short underpass structure and its construction method of newly-built basement and existing subway station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109518722A true CN109518722A (en) | 2019-03-26 |
Family
ID=65799211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910058091.7A Pending CN109518722A (en) | 2019-01-22 | 2019-01-22 | The short underpass structure and its construction method of newly-built basement and existing subway station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109518722A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486019A (en) * | 2019-07-22 | 2019-11-22 | 上海建工一建集团有限公司 | The excavating construction method in subterranean communication road is added between new and old building |
| CN110512644A (en) * | 2019-07-22 | 2019-11-29 | 上海建工一建集团有限公司 | The open cutting construction method in subterranean communication road is added between new and old building |
| CN112942441A (en) * | 2021-04-28 | 2021-06-11 | 中铁十八局集团有限公司 | Pre-grouting water-stop construction method for water-rich silt stratum |
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| CN205742215U (en) * | 2016-05-12 | 2016-11-30 | 昆明理工大学 | A kind of reusable pipe gallery pattern foundation pit supporting structure and structure external mold combinative structure |
| CN209636858U (en) * | 2019-01-22 | 2019-11-15 | 云南省建设投资控股集团有限公司 | A kind of short underpass structure of newly-built basement and existing subway station |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486019A (en) * | 2019-07-22 | 2019-11-22 | 上海建工一建集团有限公司 | The excavating construction method in subterranean communication road is added between new and old building |
| CN110512644A (en) * | 2019-07-22 | 2019-11-29 | 上海建工一建集团有限公司 | The open cutting construction method in subterranean communication road is added between new and old building |
| CN110512644B (en) * | 2019-07-22 | 2021-03-02 | 上海建工一建集团有限公司 | Open excavation construction method for additionally arranging underground communication channel between new building and old building |
| CN112942441A (en) * | 2021-04-28 | 2021-06-11 | 中铁十八局集团有限公司 | Pre-grouting water-stop construction method for water-rich silt stratum |
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