CN109594574B - Reverse construction method of large pipe jacking caisson based on limited space - Google Patents
Reverse construction method of large pipe jacking caisson based on limited space Download PDFInfo
- Publication number
- CN109594574B CN109594574B CN201811515094.0A CN201811515094A CN109594574B CN 109594574 B CN109594574 B CN 109594574B CN 201811515094 A CN201811515094 A CN 201811515094A CN 109594574 B CN109594574 B CN 109594574B
- Authority
- CN
- China
- Prior art keywords
- construction
- caisson
- section
- excavation
- east
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000010276 construction Methods 0.000 title claims abstract description 113
- 238000009412 basement excavation Methods 0.000 claims abstract description 60
- 238000013461 design Methods 0.000 claims abstract description 25
- 239000004567 concrete Substances 0.000 claims abstract description 24
- 239000002689 soil Substances 0.000 claims abstract description 23
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000005259 measurement Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 4
- 230000002787 reinforcement Effects 0.000 claims description 3
- 230000008093 supporting effect Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000009365 direct transmission Effects 0.000 description 3
- 238000009933 burial Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D23/00—Caissons; Construction or placing of caissons
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D23/00—Caissons; Construction or placing of caissons
- E02D23/08—Lowering or sinking caissons
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
- Foundations (AREA)
Abstract
本发明公开了一种基于有限空间的大型顶管沉井逆作施工方法，对预施工的场地进行平整；根据设计要求，确定开挖沉井的地面位置；根据测量放线位置，进行沉围护桩施工；然后进行地表土体挖除；对开挖空间的空间位置进行复核；对沉井的第一节钢筋混凝土结构施工；首节结构施工完成后进行沉井土方开挖施工；对沉井南北两侧的混凝土结构施工；挖除第二节沉井结构范围内的土方；对沉井东西两侧的混凝土结构施工；第二节东西结构施工后施工沉井后续节段，进行沉井封底施工，有效的控制了地表及围护结构变形、基坑开挖与主体结构交叉施工、逆作结构的自身荷载由立柱直接传给地基，同时减小了开挖卸载对持力层的影响，提高了施工安全，同时利于保护环境。
The invention discloses a large-scale pipe jacking caisson reverse construction method based on limited space. The pre-construction site is leveled; the ground position of the excavation caisson is determined according to design requirements; pile guard construction; then excavate the surface soil; review the spatial position of the excavation space; construct the reinforced concrete structure of the first section of the caisson; Construction of the concrete structures on the north and south sides of the well; excavation of the earthwork within the scope of the second section of the caisson structure; construction of the concrete structures on the east and west sides of the caisson; construction of the subsequent sections of the caisson after the construction of the second section of the east-west structure, and caisson The back cover construction effectively controls the deformation of the surface and the enclosure structure, the cross-construction of the foundation pit excavation and the main structure, and the self-load of the inverse structure is directly transmitted to the foundation from the column, and at the same time, the influence of excavation and unloading on the bearing layer is reduced. , improve the construction safety, and at the same time help to protect the environment.
Description
Technical Field
The invention relates to the technical field of underground engineering, in particular to a large-scale pipe jacking open caisson reverse construction method based on a limited space.
Background
In urban rail transit construction, a large number of municipal pipelines, gas, tap water and rain sewage pipelines need to be moved and modified due to construction requirements, wherein high-voltage cables such as 220KV, 110KV and 10KV with high risks, medium-voltage gas pipelines, high-voltage large-diameter tap water main pipelines and other large numbers of municipal pipelines need to be moved frequently. In actual construction, some pipelines are difficult to migrate and interfere with a station structure of rail transit, so that a lot of difficulties are brought to rail transit construction, and how to solve the construction problems needs to perform comparison and selection of multiple construction schemes and select an optimal scheme from the multiple construction schemes.
In some constructions, pipelines need to pass through a main trunk in the migration, and in order to ensure the smoothness of the main trunk, underground (high-pressure) pipelines are migrated by a multi-pass pipe jacking method, most of jacking pipes are less than 1.5m in diameter, and fewer jacking pipes with the pipe diameter of 3m are used. According to the technology of pipe-jacking construction, the open caisson must be constructed first, the depth of the open caisson is usually affected by various external factors, the existing underground obstacles can be avoided safely only by needing large burial depth, the burial depth of the open caisson is increased, and the difficulty and risk of construction are greatly increased.
Disclosure of Invention
The invention aims to provide a large pipe jacking open caisson reverse construction method based on limited space, which effectively controls the deformation of the earth surface and a retaining structure, the cross construction of foundation pit excavation and a main body structure, and the direct transmission of the self load of a reverse construction structure to a foundation through an upright column, reduces the influence of excavation unloading on a bearing stratum, improves the construction safety, is beneficial to protecting the environment, and meets the requirement of green construction.
In order to achieve the purpose, the invention provides a reverse construction method of a large pipe-jacking open caisson based on a limited space, which comprises the following steps:
A. leveling the field: leveling a pre-constructed field, removing foreign matters on the ground, and enclosing and sealing the construction field according to the requirement of green construction;
B. lofting for the first measurement: determining the ground position of the open caisson excavation according to design requirements;
C. constructing a steel sheet pile: constructing a fender post before the open caisson is excavated according to the measured setting-out position;
D. excavating the earth on the first layer: excavating earth surface soil bodies after the construction of the steel sheet piles is finished;
E. and (3) second measurement lofting: rechecking the space position of the excavation space after the first layer of excavation is finished;
F. construction of a first-section structure: constructing a first section of reinforced concrete structure of the open caisson;
G. and (5) excavating a second earth-saving side: after the construction of the first section of structure is completed, open caisson earthwork excavation construction is carried out;
H. the second section of north-south structure is inverted: constructing concrete structures on the north and south sides of the open caisson;
I. excavating east-west earthwork of a second section: excavating earthwork in the structural range of the second section of open caisson;
J. and (3) constructing a second east-west structure: constructing concrete structures on the two sides of the open caisson;
K. subsequent segment construction and bottom sealing: and constructing subsequent sections of the open caisson in sequence after the construction of the east-west structure of the second section, and finally performing open caisson bottom sealing construction.
Preferably, the fender pile adopts a Larsen sheet pile with a water stopping function, and the Larsen sheet pile forms connection by means of the connecting groove.
Preferably, the first layer of earthwork excavation is earth surface soil excavation performed after the construction of the steel sheet pile is finished, the excavation depth of the first layer of earthwork excavation meets the height of the first section of structure of the open caisson, and the supporting effect of the fender post on the soil body meets the requirement of soil body stability.
Preferably, the first section of structure construction is carried out after the first layer of earthwork excavation is finished and the excavation size is checked again through measurement, and then steel bar binding, concrete pouring and maintenance construction of the first section of open caisson structure are carried out.
Preferably, the excavation depth of the second section of earth excavation meets the requirement of the height of the second section of open caisson, soil bodies at the concrete bottom of the first sections of open caisson on the east and west sides are reserved in the excavation process, then soil bodies on the north and south sides are excavated, and the excavation size meets the requirement of the open caisson structure size.
Preferably, the second section of the south-north structure is reversely constructed by binding the reinforcing steel bars of the open caisson structure on the south and north sides and pouring concrete after the earth excavation on the south and north sides meets the design requirements.
Preferably, after the second east-west earth excavation is finished for the construction of the north-south concrete structure and reaches the strength required by the design, the east-west earth body is excavated and the design requirement is met.
Preferably, after the second east-west east soil body excavation meets the design requirements, reinforcement and concrete pouring construction of the open caisson structure is carried out.
Preferably, the subsequent segment construction and bottom sealing are the third segment open caisson structure construction according to the construction method of the second segment open caisson, the fourth segment open caisson structure can be continuously constructed according to the open caisson design, and the open caisson bottom sealing construction is carried out according to the design requirements after the structure meets the design requirements.
Therefore, the large pipe-jacking open caisson reverse construction method based on the limited space, which adopts the structure, effectively controls the deformation of the earth surface and the enclosure structure, the cross construction of the excavation of the foundation pit and the main structure, and the direct transmission of the self load of the reverse construction structure to the foundation by the upright post, simultaneously reduces the influence of excavation unloading on the bearing layer, improves the construction safety, is beneficial to protecting the environment, and meets the requirement of green construction.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
FIG. 1 is a flow chart of an embodiment of a large pipe jacking open caisson reverse construction method based on limited space.
Detailed Description
Examples
FIG. 1 is a flow chart of an embodiment of a large pipe jacking open caisson reverse construction method based on limited space. As shown in the figure, the invention provides a large pipe jacking open caisson reverse construction method based on a limited space, which comprises the following steps:
A. leveling the field: leveling a pre-constructed field, removing foreign matters on the ground, and enclosing and sealing the construction field according to the requirement of green construction;
B. lofting for the first measurement: determining the ground position of the open caisson excavation according to design requirements;
C. constructing a steel sheet pile: according to the measurement and setting-out position, carrying out guard pile construction before open caisson excavation, wherein the guard pile adopts Larsen sheet piles with water stopping functions, and the Larsen sheet piles form connection by means of connecting grooves;
D. excavating the earth on the first layer: excavating earth surface soil bodies after the construction of the steel sheet piles is finished, wherein the excavation depth meets the height of a first section structure of the open caisson, and the supporting effect of the fender piles on the soil bodies meets the requirement of soil body stability;
E. and (3) second measurement lofting: rechecking the space position of the excavation space after the first layer of excavation is finished;
F. construction of a first-section structure: constructing a first section of reinforced concrete structure of the open caisson, namely binding reinforcing steel bars of the first section of open caisson structure, pouring concrete and maintaining construction;
G. and (5) excavating a second earth-saving side: carrying out open caisson earthwork excavation construction after the construction of the first section of structure is finished, wherein the excavation depth of the second section of earthwork excavation meets the requirement of the height of the second section of open caisson, reserving soil bodies at the bottoms of the first sections of open caisson concrete on the east and west sides in the excavation process, excavating soil bodies on the south and north sides, and ensuring that the excavation size meets the requirement of the open caisson structure size so as to prevent the first section of open caisson structure from sinking due to dead weight;
H. the second section of north-south structure is inverted: constructing concrete structures on the south and north sides of the open caisson, and binding reinforcing steel bars and pouring concrete of the open caisson structure on the south and north sides after the earth excavation on the south and north sides meets the design requirements;
I. excavating east-west earthwork of a second section: excavating earthwork in the structural range of the second section of open caisson, excavating soil bodies on the east and west sides after construction for the north and south concrete structures is finished and the strength reaches the design requirement, and meeting the design requirement;
J. and (3) constructing a second east-west structure: constructing concrete structures on the east and west sides of the open caisson, and performing reinforcement binding and concrete pouring construction on the open caisson structure after the design requirements are met for soil excavation on the east and west sides;
K. subsequent segment construction and bottom sealing: and constructing subsequent sections of the open caisson in sequence after the construction of the second section of the structure, finally performing open caisson bottom sealing construction, constructing a third section of open caisson structure according to the construction method of the second section of the open caisson, continuously constructing a fourth section of open caisson structure according to the open caisson design, performing open caisson bottom sealing construction according to the design requirement until the structure meets the design requirement, ensuring the quality of construction joint concrete for chiseling hair, and ensuring the waterproof performance of the structure.
The invention solves the problem that the large buried depth pipe-jacking open caisson is constructed by adopting a reverse construction method in a composite stratum with soft upper stratum and narrow available ground space in the construction of the large pipe-jacking open caisson, is favorable for ensuring normal traffic order and is also favorable for quickly, safely and efficiently completing pipeline moving and modifying construction.
Therefore, the large pipe-jacking open caisson reverse construction method based on the limited space, which adopts the structure, effectively controls the deformation of the earth surface and the enclosure structure, the cross construction of the excavation of the foundation pit and the main structure, and the direct transmission of the self load of the reverse construction structure to the foundation by the upright post, simultaneously reduces the influence of excavation unloading on the bearing layer, improves the construction safety, is beneficial to protecting the environment, and meets the requirement of green construction.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the invention without departing from the spirit and scope of the invention.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811515094.0A CN109594574B (en) | 2018-12-12 | 2018-12-12 | Reverse construction method of large pipe jacking caisson based on limited space |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811515094.0A CN109594574B (en) | 2018-12-12 | 2018-12-12 | Reverse construction method of large pipe jacking caisson based on limited space |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109594574A CN109594574A (en) | 2019-04-09 |
| CN109594574B true CN109594574B (en) | 2021-11-02 |
Family
ID=65961708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811515094.0A Active CN109594574B (en) | 2018-12-12 | 2018-12-12 | Reverse construction method of large pipe jacking caisson based on limited space |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109594574B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113216294B (en) * | 2021-05-14 | 2022-02-15 | 南京工业大学 | A kind of equipment and construction method for soil excavation in narrow area in reverse construction |
| CN113802608B (en) * | 2021-10-22 | 2022-12-20 | 武汉市武昌市政建设(集团)有限公司 | Open caisson structure applied to narrow zone and construction method thereof |
| CN114319405A (en) * | 2021-12-10 | 2022-04-12 | 上海市基础工程集团有限公司 | Construction method for micro-disturbance vertical press-in type thin-wall open caisson in complex environment |
| CN115453611B (en) * | 2022-09-14 | 2025-04-04 | 广东电网有限责任公司 | A method and probe rod for detecting electric pipe jacking |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4358040B2 (en) * | 2004-06-17 | 2009-11-04 | 千葉窯業株式会社 | Caisson etc. |
| CN102635124B (en) * | 2012-04-23 | 2014-12-03 | 浙江省建工集团有限责任公司 | Construction method aiming to large open caisson in weak soil area |
| CN103195158B (en) * | 2013-04-03 | 2014-12-10 | 济南城建集团有限公司 | Municipal drainage pipeline slurry balance pipe-jacking construction method |
| CN106369223B (en) * | 2016-10-31 | 2018-04-10 | 中铁二十局集团第五工程有限公司 | A kind of silt stratum pipe jacking construction method |
| JP6826914B2 (en) * | 2017-03-03 | 2021-02-10 | 鹿島建設株式会社 | Inclination suppression method when caisson is sunk |
| CN107975040A (en) * | 2017-11-30 | 2018-05-01 | 上海宝冶集团有限公司 | Circular top pipe working pit multiple material handling method of deep foundation pit construction method |
-
2018
- 2018-12-12 CN CN201811515094.0A patent/CN109594574B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109594574A (en) | 2019-04-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109594574B (en) | Reverse construction method of large pipe jacking caisson based on limited space | |
| CN102127974B (en) | Design and construction method of additional cellar under existing building | |
| CN104264688B (en) | Manually digging hole non-uniform pile support construction process | |
| CN103321659A (en) | Large-diameter tube curtain support underground excavation construction super-shallow burying large-section subway station structure and construction method | |
| CN100510281C (en) | Semi-inverted construction method for storage tanks with super large diameter and super buried depth | |
| CN109505611B (en) | Construction method for realizing underground excavation and top-down construction by utilizing combined jacking pipes | |
| Zheng et al. | Field measurements and analysis of real-time capsule grouting to protect existing tunnel adjacent to excavation | |
| CN104131565B (en) | A kind of against making the construction method that the earthwork is just made to excavate | |
| CN107489433B (en) | Anti-leakage structure and anti-leakage method for tunnel CRD construction method | |
| CN111255462B (en) | Pipe curtain cover excavation top-down construction method for subway station construction | |
| CN105756091A (en) | Metro station foundation pit construction method for controlling deformation of neighboring buildings | |
| CN111236241A (en) | Reinforcement and excavation method of subway foundation pit in soft and water-rich stratum based on half-cover excavation method | |
| CN104005414B (en) | Large-size rebar cast in place concrete pile supports the constructional method of column | |
| CN1070250C (en) | Time-space effect method for excavation of foundation pit | |
| CN105672351A (en) | Construction method of buckling type prefabricated ribbed reinforced concrete comprehensive pipe gallery structure | |
| CN209941754U (en) | High-voltage power pipe culvert in-situ protection structure | |
| CN115387344B (en) | A rapid construction method for double foundation pits and double working conditions | |
| CN111851508A (en) | It is suitable for the structure of high-pressure circular deep foundation pit of water-rich sand egg layer and its construction method | |
| CN113529830B (en) | Shallow Buried Tunnel Adjacent Building Isolation-Underpinning Combination Reinforcement Structure and Its Construction Technology | |
| CN202788876U (en) | Superimposed bearing arched structure of large-span tunnel on stratum soft in upper layer and hard in lower layer | |
| CN214363618U (en) | Construction structure of concrete inverted hanging well suitable for mucky soil | |
| CN205502070U (en) | A dual -purpose underground gallery structure | |
| Bai et al. | Construction of shallow buried large-span metro stations using the small pipe roof-beam method | |
| CN113279787A (en) | Construction method for building pipe curtain supporting structure of ultra-shallow buried large-section underground excavation subway station | |
| CN206845198U (en) | A kind of tunnel CRD engineering method anti-leakage structures |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |