CN113738381A - Construction method for pile body at junction of underground excavation station and shield region - Google Patents
Construction method for pile body at junction of underground excavation station and shield region Download PDFInfo
- Publication number
- CN113738381A CN113738381A CN202111116977.6A CN202111116977A CN113738381A CN 113738381 A CN113738381 A CN 113738381A CN 202111116977 A CN202111116977 A CN 202111116977A CN 113738381 A CN113738381 A CN 113738381A
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- pile
- shield
- station
- constructing
- pile body
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- 238000010276 construction Methods 0.000 title claims abstract description 14
- 238000009412 basement excavation Methods 0.000 title claims abstract description 13
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 17
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims description 8
- 239000002689 soil Substances 0.000 abstract description 5
- 230000003111 delayed effect Effects 0.000 abstract description 3
- 238000005507 spraying Methods 0.000 abstract description 3
- 238000005299 abrasion Methods 0.000 abstract description 2
- 238000012545 processing Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention relates to a construction method of a pile body at the joint of an underground excavation station and a shield interval, belonging to the technical field of subway station construction and comprising the following steps: s1, constructing a first reinforced concrete pile and a plain pile below the section segment at the portal; s2, pouring mortar to the inverted arch of the transverse channel on the upper part of the plain pile; s3, shield pile grinding entering; and S4, digging a hole to construct a second reinforced concrete pile above the segment, and then constructing a pile top crown beam. The second-layer transverse channel of the vertical shaft at two ends of the station can be fully utilized; after the shield passes through, the upper pile is constructed for the second time, the shield segment is firmly jointed with the upper pile body, and when the subsequent station earthwork excavation and the inter-pile net hanging anchor spraying work are carried out, the potential safety and quality risk hazards such as inclination of the pile body, instability of the pile body and the surrounding soil body and the like can be avoided, and the later period is not delayed without processing; the pile grinding time of the shield is greatly shortened, and meanwhile, the abrasion to a cutter head of the shield machine is reduced; when the duct piece near the position is dismantled, the looseness is not easy to cause.
Description
Technical Field
The invention relates to the technical field of subway station construction, in particular to a construction method of a pile body at a joint of an underground excavation station and a shield interval.
Background
The subway station is a place for providing railway train stop for an urban rail transit system (urban rail system for short) and is used for carrying goods or allowing passengers to take a bus. The subway station at the present stage does not refer to a station built in an environment below the ground, but refers to a station arranged along a subway system, and can be built underground, semi-underground or on the ground or elevated.
During the construction of a subway station, in order to facilitate the shield to grind a pile to pass the station, the end pile at the junction of a station and a shield section tunnel portal is a glass fiber reinforced pile, and the current construction method has the following problems: 1. because the transverse clearance size in the transverse channel of the No. 1 and No. 4 vertical shafts of the station is 4m, after the construction of the inner crown beam of the transverse channel is finished, the clearance size of the inner lower part of the transverse channel is reduced to 2.1m, so that the utilization rate of the transverse channel is greatly reduced; 2. after the shield passes through, the pile body above the shield segment is in a cantilever state, and when the earth excavation of a subsequent station and the spraying of a net hanging anchor between piles are carried out, the potential safety and quality risk hazards such as inclination of the pile body, instability of the pile body and surrounding soil mass and the like easily occur at the position, and the construction period is possibly delayed due to post-processing; 3. the time consumed for grinding the pile is long when the shield passes through the station; 4. because of the pile body is in the cantilever state, lead to here section of jurisdiction top soil body unstable, inlay the solid power reduction between section of jurisdiction and the soil body on every side, when the near section of jurisdiction of burden second floor portal department is demolishd, easily cause here section of jurisdiction not hard up.
In order to avoid the adverse effects, the invention is necessary to provide a method for constructing a pile body at the joint between a station underground excavated station and a shield interval, so as to overcome the defects of the prior art and ensure the stability of the pile body after the ground pile of the shield passes through the station.
Disclosure of Invention
The invention aims to provide a construction method of a pile body at the joint of an underground excavation station and a shield area, and aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a construction method of a pile body at the joint of an underground excavation station and a shield interval comprises the following steps:
s1, constructing a first reinforced concrete pile and a plain pile below the section segment at the portal;
s2, pouring mortar to the inverted arch of the transverse channel on the upper part of the plain pile;
s3, shield pile grinding entering;
and S4, digging a hole to construct a second reinforced concrete pile above the segment, and then constructing a pile top crown beam.
As a further technical scheme of the present invention, in S1, the first reinforced concrete pile is disposed at the bottom of the plain pile, and the bottom of the first reinforced concrete pile is provided with an elongated pile.
According to a further technical scheme of the invention, the mortar in the S2 is M5 mortar.
As a further technical scheme of the present invention, the shield pile grinding in S3 includes a left shield station and a right shield station.
Compared with the prior art, the invention has the beneficial effects that:
1. the second-layer transverse channel of the vertical shaft at two ends of the station can be fully utilized;
2. after the shield passes through, the upper pile is constructed for the second time, the shield segment is firmly jointed with the upper pile body, and when the subsequent station earthwork excavation and the inter-pile net hanging anchor spraying work are carried out, the potential safety and quality risk hazards such as inclination of the pile body, instability of the pile body and the surrounding soil body and the like can be avoided, and the later period is not delayed without processing;
3. the pile grinding time of the shield is greatly shortened, and meanwhile, the abrasion to a cutter head of the shield machine is reduced;
4. when the duct piece near the position is dismantled, the looseness is not easy to cause.
Drawings
FIG. 1 is a process diagram of S1 according to the present invention;
FIG. 2 is a process diagram of S2 according to the present invention;
FIG. 3 is a process flow diagram of S3 of the present invention;
fig. 4 is a process diagram of S4 according to the present invention.
In the figure: 1-portal, 2-first reinforced concrete pile, 3-plain pile, 4-lengthened pile, 5-mortar, 61-left shield station, 62-right shield station, 7-transverse channel inverted arch, 8-second reinforced concrete pile and 9-pile top crown beam.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
The embodiment of the invention is realized in such a way that the construction method of the pile body at the joint of the underground excavation station and the shield zone shown in figures 1-4 comprises the following steps:
s1, constructing a first reinforced concrete pile 2 and a plain pile 3 below an interval duct piece at the portal 1;
s2, pouring M5 mortar 5 on the plain pile 3 to a transverse channel inverted arch position 7 (pile top crown beam is not constructed for the moment);
s3, performing shield pile grinding, specifically, enabling a left line shield to pass through station 61 and a right line shield to pass through station 62;
and S4, digging a hole to construct a second reinforced concrete pile 8 above the segment, and then constructing a pile top crown beam 9.
In practical application, the length of the adjusted pile is shortened, so that the pile bodies below the shield segment, namely the first reinforced concrete pile 2 and the plain pile 3, which are firstly constructed for stabilization, are formed, and the lengthened section pile 4 at the lower part of the first reinforced concrete pile is also reinforced concrete, and the length of the lengthened section pile 4 is preferably 2 m; considering that the diameter of the shield excavation is 6.16m and possible errors are generated when the shield machine tunnels to the station end pile, the length range of the plain pile 3 is as follows: the bottom of the plain pile 3 is 200mm below the lowest point of the outer wall of the segment, and the top of the plain pile 3 is 200mm above the highest point of the outer wall of the segment, so that the plain pile 3 is tightly combined with the segment above the plain pile after the shield grinding, and the support is stable.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (4)
1. A construction method for a pile body at a joint of an underground excavation station and a shield interval is characterized by comprising the following steps:
s1, constructing a first reinforced concrete pile and a plain pile below the section segment at the portal;
s2, pouring mortar to the inverted arch of the transverse channel on the upper part of the plain pile;
s3, shield pile grinding entering;
and S4, digging a hole to construct a second reinforced concrete pile above the segment, and then constructing a pile top crown beam.
2. The method for constructing the pile body at the junction between the underground excavated station and the shield zone according to claim 1, wherein the first reinforced concrete pile at S1 is provided at the bottom of a plain pile, and the first reinforced concrete pile is provided with an extended pile at the bottom.
3. The method for constructing the pile body at the junction of the underground excavated station and the shield zone according to claim 1, wherein the mortar in the S2 is M5 mortar.
4. The method for constructing the pile body at the junction of the underground excavation station and the shield zone according to claim 1, wherein the shield pile grinding in the step S3 comprises a left-line shield station passing and a right-line shield station passing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111116977.6A CN113738381B (en) | 2021-09-23 | 2021-09-23 | Construction method for pile body at joint of underground excavation station and shield zone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111116977.6A CN113738381B (en) | 2021-09-23 | 2021-09-23 | Construction method for pile body at joint of underground excavation station and shield zone |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113738381A true CN113738381A (en) | 2021-12-03 |
| CN113738381B CN113738381B (en) | 2023-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111116977.6A Active CN113738381B (en) | 2021-09-23 | 2021-09-23 | Construction method for pile body at joint of underground excavation station and shield zone |
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| CN (1) | CN113738381B (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101086209A (en) * | 2007-07-23 | 2007-12-12 | 北京交通大学 | Shield tunneling and shallow tunneling combined construction method for building underground station |
| CN201241335Y (en) * | 2008-07-01 | 2009-05-20 | 北京住总集团有限责任公司 | Pile and post in one foundation structure of underground engineering |
| CN204551452U (en) * | 2015-04-17 | 2015-08-12 | 上海三凯建设管理咨询有限公司 | A kind of composite pile improving bearing capacity of foundation soil |
| CN105003272A (en) * | 2015-07-26 | 2015-10-28 | 北京工业大学 | Reversed construction method for expanding and excavating stations on sectional shield tunnel foundations of subways |
| CN106050244A (en) * | 2016-08-01 | 2016-10-26 | 中铁第勘察设计院集团有限公司 | Water-rich sand-cobble stratum shield entry and exit reinforcing system and construction method thereof |
| CN106968690A (en) * | 2017-04-20 | 2017-07-21 | 中冶建工集团有限公司 | The method for tunnel construction for soil property of caving in |
| CN106988753A (en) * | 2017-05-08 | 2017-07-28 | 中建三局基础设施工程有限公司 | A kind of U-shaped plain concrete ground-connecting-wall adds steel bushing shield structure and its method of reseptance |
| CN107575237A (en) * | 2017-08-23 | 2018-01-12 | 广州地铁设计研究院有限公司 | A kind of subsurface excavation method is combined the construction method of construction subway station with shield method |
| CN109706909A (en) * | 2019-02-21 | 2019-05-03 | 郑州市市政工程总公司 | The structures foundation reinforcing structure and its construction method worn under reply metro shield |
| CN109707415A (en) * | 2018-11-21 | 2019-05-03 | 广州地铁设计研究院股份有限公司 | A kind of joint construction method and its joint structure of Shield-bored tunnels and station |
| CN109797665A (en) * | 2019-01-29 | 2019-05-24 | 北京城建设计发展集团股份有限公司 | Statically indeterminate structure bridge pile foundation actively underpins top lift determination and displacement control method |
| CN111396061A (en) * | 2020-03-24 | 2020-07-10 | 西安建筑科技大学 | Shield construction method, construction working face thereof and mixed pile body in working face |
| CN112411614A (en) * | 2020-11-17 | 2021-02-26 | 中铁第四勘察设计院集团有限公司 | Connecting structure capable of transferring force across existing component, reinforcing structure and construction method |
| CN112983446A (en) * | 2021-04-22 | 2021-06-18 | 中铁一局集团第二工程有限公司 | Construction method for shield cutting of existing station reinforced concrete fender post |
-
2021
- 2021-09-23 CN CN202111116977.6A patent/CN113738381B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101086209A (en) * | 2007-07-23 | 2007-12-12 | 北京交通大学 | Shield tunneling and shallow tunneling combined construction method for building underground station |
| CN201241335Y (en) * | 2008-07-01 | 2009-05-20 | 北京住总集团有限责任公司 | Pile and post in one foundation structure of underground engineering |
| CN204551452U (en) * | 2015-04-17 | 2015-08-12 | 上海三凯建设管理咨询有限公司 | A kind of composite pile improving bearing capacity of foundation soil |
| CN105003272A (en) * | 2015-07-26 | 2015-10-28 | 北京工业大学 | Reversed construction method for expanding and excavating stations on sectional shield tunnel foundations of subways |
| CN106050244A (en) * | 2016-08-01 | 2016-10-26 | 中铁第勘察设计院集团有限公司 | Water-rich sand-cobble stratum shield entry and exit reinforcing system and construction method thereof |
| CN106968690A (en) * | 2017-04-20 | 2017-07-21 | 中冶建工集团有限公司 | The method for tunnel construction for soil property of caving in |
| CN106988753A (en) * | 2017-05-08 | 2017-07-28 | 中建三局基础设施工程有限公司 | A kind of U-shaped plain concrete ground-connecting-wall adds steel bushing shield structure and its method of reseptance |
| CN107575237A (en) * | 2017-08-23 | 2018-01-12 | 广州地铁设计研究院有限公司 | A kind of subsurface excavation method is combined the construction method of construction subway station with shield method |
| CN109707415A (en) * | 2018-11-21 | 2019-05-03 | 广州地铁设计研究院股份有限公司 | A kind of joint construction method and its joint structure of Shield-bored tunnels and station |
| CN109797665A (en) * | 2019-01-29 | 2019-05-24 | 北京城建设计发展集团股份有限公司 | Statically indeterminate structure bridge pile foundation actively underpins top lift determination and displacement control method |
| CN109706909A (en) * | 2019-02-21 | 2019-05-03 | 郑州市市政工程总公司 | The structures foundation reinforcing structure and its construction method worn under reply metro shield |
| CN111396061A (en) * | 2020-03-24 | 2020-07-10 | 西安建筑科技大学 | Shield construction method, construction working face thereof and mixed pile body in working face |
| CN112411614A (en) * | 2020-11-17 | 2021-02-26 | 中铁第四勘察设计院集团有限公司 | Connecting structure capable of transferring force across existing component, reinforcing structure and construction method |
| CN112983446A (en) * | 2021-04-22 | 2021-06-18 | 中铁一局集团第二工程有限公司 | Construction method for shield cutting of existing station reinforced concrete fender post |
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| Publication number | Publication date |
|---|---|
| CN113738381B (en) | 2023-11-14 |
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