CN107762519B - Pipe jacking enclosing construction method for end transverse channel of subway station - Google Patents
Pipe jacking enclosing construction method for end transverse channel of subway station Download PDFInfo
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- CN107762519B CN107762519B CN201711068332.3A CN201711068332A CN107762519B CN 107762519 B CN107762519 B CN 107762519B CN 201711068332 A CN201711068332 A CN 201711068332A CN 107762519 B CN107762519 B CN 107762519B
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- steel pipe
- pipe
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
Abstract
The invention discloses a top pipe enclosing construction method of a subway station end transverse channel; the method comprises the following steps: firstly, respectively building a top pipe originating well and a top pipe receiving well at two ends of a transverse channel at the long end part of the subway vehicle by adopting an open excavation construction method; then, installing a push bench to the push bench originating well, and arranging a plurality of steel pipe sheets; pushing the jacking pipes one by one according to the sequence from bottom to top and from outside to inside to finish the arrangement of the steel pipe sheets; after the push pipe is pushed, water stopping materials are injected into the joint between two adjacent steel pipe sheets, and all the connecting box bodies form a large water stopping closed space; completing the construction of a main structure of the transverse passage in a plurality of steel pipe sheet areas; and finally excavating the residual soil in steps to finish the construction of the transverse channel. The invention can avoid excavating the existing roads and moving pipelines, avoid manual underground excavation, reduce engineering risks, does not need auxiliary measures, can effectively control ground settlement, and can complete station construction quickly, safely, environmentally and efficiently.
Description
Technical Field
The invention relates to the technical field of subway station construction, in particular to a top pipe enclosure construction method of a transverse channel at the end part of a subway station.
Background
In the existing subway station construction project, the subway station constructed by the underground excavation method needs to implement vertical shafts in peripheral construction sites, a ingate is excavated through the vertical shaft to excavate a transverse passage to enter a station main body range, after the construction of a secondary lining structure of the transverse passage is finished, the ingate is excavated on a side wall, a station main body structure is constructed by the underground excavation method, and usually, 3 vertical shaft transverse passages are needed to be arranged in one station.
In practical application, in the construction of the existing underground excavation station, the part of the auxiliary structure, which goes out of the ground, is usually used as a construction vertical shaft of the underground excavation station, the plane size of the vertical shaft is small, the construction range is narrow and small when the later construction of a transverse passage and a station main body is caused, after the construction of a secondary lining structure of the transverse passage, the station pilot tunnel is excavated step by step, and the danger coefficient is high under the condition of rich water due to the fact that manual operation is adopted completely. Meanwhile, the construction space is narrow, the construction period of manual operation is long, and the construction cost is high.
With the development of technology and the increasing quality of manpower, how to complete the construction of the transverse passage and the station quickly, safely, environmentally and efficiently becomes the key of the construction of the underground excavation station structure.
Therefore, the existing construction method needs to be improved, the defects of the prior art are overcome, the construction efficiency is improved, the construction cost is reduced, and the potential safety hazard is eliminated.
Disclosure of Invention
In view of the above defects of the prior art, the invention provides a pipe jacking enclosing construction method for a transverse channel at the end part of a subway station, which aims to avoid manual underground excavation, reduce engineering risks, effectively control ground settlement without adopting auxiliary measures and quickly, safely, environmentally and efficiently finish station construction.
In order to achieve the purpose, the invention discloses a top pipe enclosing construction method of a transverse channel at the end part of a subway station; the method comprises the following steps:
a. respectively building a top pipe originating well and a top pipe receiving well at two ends of a transverse channel at the long end part of the subway car by adopting an open excavation construction method;
b. installing a push bench to the push bench originating well, and arranging a plurality of steel pipe sheets;
c. pushing the jacking pipes one by one according to the sequence from bottom to top and from outside to inside to finish the arrangement of the steel pipe sheets;
d. after the push pipe is pushed, water stopping materials are injected into the joint between two adjacent steel pipe sheets, and all the connecting box bodies form a large water stopping closed space;
e. completing the construction of a main structure of the transverse passage in a plurality of steel pipe sheet areas;
f. and excavating the residual soil body step by step, and finishing the construction of the transverse channel.
Preferably, in step a, two lining structures are arranged in the pipe jacking originating well and the pipe jacking receiving well.
Preferably, in the step b, longitudinal and transverse rib plates are arranged on the steel pipe sheet.
More preferably, the steel pipe piece and/or the rib plate is made of a Q345 steel plate.
Preferably, in the step C, the plurality of steel pipe pieces are divided into 4 parts, namely, an upper layer, a middle layer, a lower layer, and a side surface, which are respectively denoted by S, Z, X and C, and the top pipes are pushed one by one in the order of the lower layer, the upper layer, the side surface, and the middle layer.
More preferably, in 4 parts of the upper layer, the middle layer, the lower layer and the side surface, the connecting interfaces of the adjacent finished steel pipe sheets connected with the steel pipe sheets are reserved on the steel pipe sheets finished first.
Preferably, the step e further comprises the following steps:
e1. constructing a lower bottom beam of a middle upright post, a bottom plate and an inner side wall of the pipe sheet in the lower steel pipe sheet;
e2. constructing a steel pipe column, a top beam and a middle plate beam in the upper layer steel pipe sheet and the middle layer steel pipe sheet, and reserving a steel bar and a waterproof joint;
e3. constructing a top plate, a middle plate and a side wall, and reserving reinforcing steel bars and waterproof joints;
e4. and connecting structure side walls.
The invention has the beneficial effects that:
the invention can avoid excavating the existing roads and moving pipelines, avoid manual underground excavation, reduce engineering risks, does not need auxiliary measures, can effectively control ground settlement, and can complete station construction quickly, safely, environmentally and efficiently.
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.
Drawings
FIG. 1 is a schematic diagram of a cross-channel structure according to an embodiment of the present invention.
Fig. 2 is a schematic view showing a structure of a steel pipe sheet according to an embodiment of the present invention.
Fig. 3 is a layout structure diagram of a plurality of steel pipe pieces in a transverse passage according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram illustrating a structure after a water stopping material is injected between two steel pipe sheets in an embodiment of the present invention.
Fig. 5 shows a schematic cross-sectional view of the invention in fig. 1 at AA when constructing a bottom beam.
Fig. 6 shows a schematic cross-sectional view of the invention in the construction of a bottom beam at BB in fig. 1.
Fig. 7 is a schematic sectional view illustrating a steel pipe column constructed at AA of fig. 1 according to the present invention.
Fig. 8 is a schematic sectional view showing a steel pipe column constructed at BB in fig. 1 according to the present invention.
Figure 9 shows a schematic cross-sectional view of the invention as it is built at AA in figure 1.
Figure 10 shows a schematic cross-sectional view of the invention as constructed at BB in figure 1.
Fig. 11 is a schematic cross-sectional view illustrating the construction of the sidewall at AA in fig. 1 according to the present invention.
Fig. 12 shows a schematic cross-sectional structure of the invention when the sidewall is built at BB in fig. 1.
FIG. 13 is a schematic cross-sectional view of the invention taken at AA in FIG. 1 with the soil inside removed.
FIG. 14 is a schematic cross-sectional view of the invention taken at BB of FIG. 1 with the soil inside removed.
Detailed Description
Examples
As shown in fig. 1 to 14, a top pipe enclosure construction method of a transverse passage at the end of a subway station; the method comprises the following steps:
a. a top pipe originating well and a top pipe receiving well 2 at two ends of a transverse channel at the long end part of the subway train are respectively built by adopting an open excavation construction method;
b. installing a push bench to a push bench originating well 1, and arranging a plurality of steel pipe sheets;
c. pushing the jacking pipes one by one according to the sequence from bottom to top and from outside to inside to finish the arrangement of the steel pipe sheets;
d. after the push pipe is pushed, water stopping materials are injected into the joint between two adjacent steel pipe sheets, and all the connecting box bodies form a large water stopping closed space;
e. completing the construction of a main structure of the transverse passage in a plurality of steel pipe sheet areas;
f. and excavating the residual soil body step by step, and finishing the construction of the transverse channel.
In the invention, the road outside the red line near the end wells at the two ends of the main structure of the station is used as a construction foundation pit of the underground excavated station, the end wells and the transverse channel are constructed by adopting a top pipe enclosing construction method, and the modulus of the adopted steel pipe sheet is determined according to the size of the transverse channel.
The method comprises the steps of firstly, adopting a small-section jacking pipe to construct steel pipe sheets on the periphery of a section and at the position of a middle plate, then constructing a station frame column and a side wall, and constructing a beam and plate structure after the side wall and the frame column are stabilized. And after the construction of the two end wells is finished, the main structure of the station is continuously implemented in the same sequence.
In some embodiments, in step a, two liner structures are provided within the push pipe originating well 1 and the push pipe receiving well 2.
In some embodiments, as shown in fig. 2, in step b, the steel pipe sheet is provided with longitudinal and transverse ribs.
In certain embodiments, the steel tube sheets and/or ribs are made of Q345 steel plate.
In some embodiments, as shown in fig. 3, in step C, the steel pipe sheets are divided into 4 parts of upper layer, middle layer, lower layer and side surface, which are respectively represented by S, Z, X and C, and the top pipes are pushed one by one in the order of lower layer, upper layer, side surface and middle layer.
In some embodiments, as shown in fig. 4, in all of the 4 parts of the upper layer, the middle layer, the lower layer and the side surface, the connection interfaces of the adjacent finished steel pipe sheets connected with the first finished steel pipe sheets are reserved.
In certain embodiments, as shown in fig. 5-14, step e further comprises the steps of:
e1. as shown in fig. 5 and 6, constructing a middle upright post lower bottom beam, a bottom plate and a pipe sheet inner side wall in the lower layer steel pipe sheet;
e2. as shown in fig. 7 and 8, steel pipe columns, top beams and middle plate beams are constructed in the upper-layer steel pipe sheet and the middle-layer steel pipe sheet, and steel bars and waterproof joints are reserved;
e3. as shown in fig. 9 and 10, the top plate, the middle plate and the side wall are constructed, and the steel bars and the waterproof joints are reserved;
e4. as shown in fig. 11 and 12, the structure side wall is connected.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (4)
1. A top pipe enclosing construction method of a transverse channel at the end part of a subway station; the method comprises the following steps:
a. respectively building a top pipe originating well (1) and a top pipe receiving well (2) at two ends of a transverse channel at the long end part of the subway train by adopting an open excavation construction method;
b. installing a push bench to the push bench originating well (1), and arranging a plurality of steel pipe sheets;
c. pushing the jacking pipes one by one according to the sequence from bottom to top and from outside to inside to finish the arrangement of the steel pipe sheets;
in step C, dividing the steel pipe sheets into 4 parts of an upper layer, a middle layer, a lower layer and a side surface, which are respectively represented by S, Z, X and C, and pushing the top pipes one by one according to the sequence of the lower layer, the upper layer, the side surface and the middle layer;
in 4 parts of the upper layer, the middle layer, the lower layer and the side surface, the first finished steel pipe sheet is reserved with adjacent and later finished connecting interfaces of the steel pipe sheet connected with the first finished steel pipe sheet;
d. after the push pipe is pushed, water stopping materials are injected into the joint between two adjacent steel pipe sheets,
the connecting box bodies form a large sealed space for stopping water;
e. completing the construction of a main structure of the transverse passage in a plurality of steel pipe sheet areas; the method comprises the following specific steps:
e1. constructing a lower bottom beam of a middle upright post, a bottom plate and an inner side wall of the pipe sheet in the lower steel pipe sheet;
e2. constructing a steel pipe column, a top beam and a middle plate beam in the upper layer steel pipe sheet and the middle layer steel pipe sheet, and reserving a steel bar and a waterproof joint;
e3. constructing a top plate, a middle plate and a side wall, and reserving reinforcing steel bars and waterproof joints;
e4. connecting the structure side walls;
f. and excavating the residual soil body step by step, and finishing the construction of the transverse channel.
2. The pipe jacking enclosure construction method for the end cross passage of the subway station as claimed in claim 1, wherein in said step a, two lining structures are arranged in said pipe jacking originating well (1) and said pipe jacking receiving well (2).
3. The top pipe enclosing construction method for the end cross passage of the subway station as claimed in claim 1, wherein in said step b, said steel pipe sheet is provided with longitudinal and transverse ribs.
4. The top pipe enclosing construction method for the end cross channel of the subway station as claimed in claim 3, wherein said steel pipe pieces and/or said rib plates are made of Q345 steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711068332.3A CN107762519B (en) | 2017-11-03 | 2017-11-03 | Pipe jacking enclosing construction method for end transverse channel of subway station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711068332.3A CN107762519B (en) | 2017-11-03 | 2017-11-03 | Pipe jacking enclosing construction method for end transverse channel of subway station |
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| Publication Number | Publication Date |
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| CN107762519A CN107762519A (en) | 2018-03-06 |
| CN107762519B true CN107762519B (en) | 2020-03-31 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109723443B (en) * | 2018-12-30 | 2021-07-20 | 中铁十四局集团有限公司 | Tunnel construction method |
| CN109505611B (en) * | 2019-01-28 | 2022-08-16 | 中铁第六勘察设计院集团有限公司 | Construction method for realizing underground excavation and top-down construction by utilizing combined jacking pipes |
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| CN104879144B (en) * | 2015-05-20 | 2016-09-28 | 上海市城市建设设计研究总院 | The excavating construction method of the underground space is built with array push pipe in soft clay area |
| CN105370287B (en) * | 2015-10-10 | 2018-08-03 | 中铁工程装备集团有限公司 | Large Underground parking lot machinery excavating construction method |
| CN105298507B (en) * | 2015-11-17 | 2017-09-12 | 中铁工程装备集团有限公司 | A kind of underground pipe gallery construction method of top open cut bottom tunneler construction |
| CN105803957B (en) * | 2016-04-06 | 2018-04-06 | 中铁大桥局集团第四工程有限公司 | A kind of box culvert advancing device and box culvert advancing method |
| CN105863673B (en) * | 2016-05-24 | 2019-03-26 | 长江勘测规划设计研究有限责任公司 | Pusher fuselage can return to formula pipe jacking construction method and constructing structure |
| CN106640108B (en) * | 2017-01-19 | 2019-02-19 | 中铁工程装备集团有限公司 | A kind of hypogee modular construction system and its construction method |
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