CN109610495A - Close to the pile base construction method of Shield-bored tunnels - Google Patents
Close to the pile base construction method of Shield-bored tunnels Download PDFInfo
- Publication number
- CN109610495A CN109610495A CN201811508159.9A CN201811508159A CN109610495A CN 109610495 A CN109610495 A CN 109610495A CN 201811508159 A CN201811508159 A CN 201811508159A CN 109610495 A CN109610495 A CN 109610495A
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- China
- Prior art keywords
- steel bushing
- conduit
- close
- steel
- reinforcement cage
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
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- Engineering & Computer Science (AREA)
- Structural 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)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a kind of pile base construction method of close Shield-bored tunnels, include the following steps: that S1, smooth location, convolution cutter are in place；S2, steel bushing is lifted into scheduled position, is directed at the hole location close to Shield-bored tunnels；S3, steel bushing is pressed into one section of depth of soil layer in a manner of static pressure with convolution cutter；S4, the soil body is cut with convolution cutter, fills the water, the mud in steel bushing in one section of depth is gone out, and be transported to ground with slush pump when cutting is close to 50-60cm depth；S5, step S3 and step S4 is repeated, until steel bushing is reached scheduled depth, forms stake holes；S6, steel reinforcement cage is hung, inserts it into steel bushing and be located at center, the height of the height of steel reinforcement cage close to steel bushing；S7, conduit is hung, be inserted into steel reinforcement cage；S8, concrete pour at the top of conduit, and the bottom of steel bushing and steel reinforcement cage is flowed to from conduit bottom.The present invention has method beneficial effect that is simple, at low cost, easy for construction, preventing Shield-bored tunnels deformation.
Description
Technical field
The present invention relates to a kind of pile base construction methods of close Shield-bored tunnels.
Background technique
21 century is the century that people develop the underground space, and city space can not be expanded without limitation, and Urban Underground is empty
Between be constantly exploited, city tunnel and underground engineering are to deeper spatial spread.
With the development of China's metro construction cause, more and more subway line engineerings build investment.In subway
In engineering, the deep foundation that pile foundation is big as a kind of intensity, bearing capacity is high, durability is good is used widely.Traditional pile foundation is applied
Work is increased to the head (jump bit) that is redrilled with sword centainly frequently with percussive drilling, using percussive drill by rack, hoist engine
Highly, soil layer and cutting broken rock drilling are impacted by the impact force of free-falling, the scope of application is wider, but work progress
In, hammering can generate loud noise and vibration, have large effect that need to consider soil compaction effect the periphery soil body.On tunnel underground edge
Line, website carry out pile foundation construction can section of jurisdiction to shield tunnel construction and track have an impact, and subway is operated normally to deformation
There are strict requirements.Therefore influence of the pile foundation construction to neighbour's tunnel structure is reduced, neighbour's tunnel subsidence and horizontal distortion are controlled
Engineering measure, guarantee the safety of tunnel and surrounding building, become urgent need to solve the problem in engineering construction.
Summary of the invention
According to the above deficiency, providing the pile base construction method close to Shield-bored tunnels, this method can solve the present invention
The problems such as sedimentation of prior art pile foundation surrounding ground, the displacement of tunnel structure.
The technical scheme is that
A kind of pile base construction method of close Shield-bored tunnels, includes the following steps:
S1 smooth location, convolution cutter are in place；
Steel bushing is lifted into scheduled position by S2, is directed at the hole location close to Shield-bored tunnels；
Steel bushing is pressed into one section of depth of soil layer with convolution cutter by S3 in a manner of static pressure；
S4 cuts the soil body with convolution cutter, fills the water when cutting is close to 50-60cm depth, will be in steel bushing in one section of depth
Mud go out, and be transported to ground with slush pump；
S5 repeats step S3 and step S4, until steel bushing is reached scheduled depth, forms stake holes；
S6 hangs steel reinforcement cage, inserts it into steel bushing and be located at center, the height of the height of steel reinforcement cage close to steel bushing；
S7 hangs conduit, is inserted into steel reinforcement cage, and the bottom of conduit is close but does not touch the bottom of steel bushing and steel reinforcement cage；
S8 concrete pours at the top of the conduit, flows to the bottom of steel bushing and steel reinforcement cage from conduit bottom, in casting process
Conduit is drawn high when pouring, and the depth for ensuring conduit Transducers Embedded in Concrete during drawing high waits for coagulation quietly close to 2-6m after the completion of pouring
Soil solidification forms pile foundation.
It can reduce when steel bushing pushes due to being provided with steel bushing to periphery soil body generation stress and soil compaction phenomenon, steel bushing
Interior undisturbed takes soil, and rock drilling without friction can obviously reduce to steel bushing externalities；
It is filled the water into stake holes, so that the hydraulic balance inside and outside steel bushing.After steel bushing complete penetration artesian aquifer, then covered
For artesian aquifer part soil excavation to prevent stratum dehydration, hole wall from collapsing, hole quality is high in managing.
In the step S8, during waiting for quietly, when mixed mud reaches the intensity of 20%-30%, steel bushing is extracted.It needs to illustrate
, comprehensively considered according to soil layer construction, cost, steel bushing can not be extracted.
The conduit uses preceding carry out closed-water test, it is ensured that the tube wall of conduit is water-tight.
In the step 8, when side filling concrete edge draws high conduit and steel bushing, the bottom of steel bushing will be consistently lower than conduit
Bottom.
In the step 7, the distance from bottom steel bushing of conduit and 30~40cm of bottom of steel reinforcement cage.
The present invention has method beneficial effect that is simple, at low cost, easy for construction, preventing Shield-bored tunnels deformation.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention.
Specific embodiment
Now in conjunction with attached drawing, the present invention is further illustrated:
As shown in Figure 1, a kind of pile base construction method of close Shield-bored tunnels, includes the following steps:
S1 smooth location, convolution cutter are in place；
Steel bushing 2 is lifted into scheduled position by S2, is directed at the hole location close to Shield-bored tunnels；
Steel bushing 2 is pressed into one section of depth of soil layer with convolution cutter by S3 in a manner of static pressure；
S4 cuts the soil body with convolution cutter, fills the water when cutting is close to 50-60cm depth, by one section of depth in steel bushing 2
Interior mud is gone out, and is transported to ground with slush pump；
S5 repeats step S3 and step S4, until steel bushing is reached scheduled depth, forms stake holes；
S6 hangs steel reinforcement cage 3, inserts it into steel bushing 2 and be located at center, the height of the height of steel reinforcement cage 3 close to steel bushing 2
Degree；
S7 hangs conduit 1, is inserted into steel reinforcement cage 3, and the bottom of conduit 1 is close but does not touch steel bushing 2 and steel reinforcement cage 3
Bottom；The distance from bottom steel bushing 2 of conduit 1 and 30~40cm of bottom of steel reinforcement cage 3；
S8 concrete pours at the top of conduit 1, and the bottom of steel bushing 2 and steel reinforcement cage 3 is flowed to from 1 bottom of conduit, was poured
Conduit 1 is drawn high when pouring in journey, and the depth for ensuring 1 Transducers Embedded in Concrete of conduit during drawing high is quiet after the completion of pouring close to 2-6m
Pile foundation is formed to concrete setting.
In step S8, during waiting for quietly, when mixed mud reaches the intensity of 20%-30%, steel bushing 2 is extracted；Side fills concrete
While the bottom of steel bushing 2 will be consistently lower than the bottom of conduit 1 when drawing high conduit 1 and steel bushing 2.
Conduit 1 uses preceding carry out closed-water test, it is ensured that the tube wall of conduit 1 is water-tight.
Claims (5)
1. a kind of pile base construction method of close Shield-bored tunnels, characterized in that include the following steps:
S1 smooth location, convolution cutter are in place；
Steel bushing is lifted into scheduled position by S2, is directed at the hole location close to Shield-bored tunnels；
Steel bushing is pressed into one section of depth of soil layer with convolution cutter by S3 in a manner of static pressure；
S4 cuts the soil body with convolution cutter, fills the water when cutting is close to 50-60cm depth, will be in steel bushing in one section of depth
Mud go out, and be transported to ground with slush pump；
S5 repeats step S3 and step S4, until steel bushing is reached scheduled depth, forms stake holes；
S6 hangs steel reinforcement cage, inserts it into steel bushing and be located at center, the height of the height of steel reinforcement cage close to steel bushing；
S7 hangs conduit, is inserted into steel reinforcement cage, and the bottom of conduit is close but does not touch the bottom of steel bushing and steel reinforcement cage；
S8 concrete pours at the top of the conduit, flows to the bottom of steel bushing and steel reinforcement cage from conduit bottom, in casting process
Conduit is drawn high when pouring, and the depth for ensuring conduit Transducers Embedded in Concrete during drawing high waits for coagulation quietly close to 2-6m after the completion of pouring
Soil solidification forms pile foundation.
2. a kind of pile base construction method of close Shield-bored tunnels as described in claim 1, characterized in that in step S8,
During waiting for quietly, when mixed mud reaches the intensity of 20%-30%, steel bushing is extracted.
3. a kind of pile base construction method of close Shield-bored tunnels as described in claim 1, characterized in that the conduit makes
With preceding carrying out closed-water test, it is ensured that the tube wall of conduit is water-tight.
4. a kind of pile base construction method of close Shield-bored tunnels as described in claim 1, characterized in that the step 8
In, when side filling concrete edge draws high conduit and steel bushing, the bottom of steel bushing will be consistently lower than the bottom of conduit.
5. a kind of pile base construction method of close Shield-bored tunnels as described in claim 1, characterized in that the step 7
In, the distance from bottom steel bushing of conduit and 30~40cm of bottom of steel reinforcement cage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811508159.9A CN109610495A (en) | 2018-12-11 | 2018-12-11 | Close to the pile base construction method of Shield-bored tunnels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811508159.9A CN109610495A (en) | 2018-12-11 | 2018-12-11 | Close to the pile base construction method of Shield-bored tunnels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109610495A true CN109610495A (en) | 2019-04-12 |
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ID=66006969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811508159.9A Pending CN109610495A (en) | 2018-12-11 | 2018-12-11 | Close to the pile base construction method of Shield-bored tunnels |
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| Country | Link |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926409A (en) * | 2011-08-09 | 2013-02-13 | 上海建工五建集团有限公司 | Construction method for preventing water and soil loss |
| CN104110028A (en) * | 2014-07-07 | 2014-10-22 | 河北省水利工程局 | Grouting pile construction method for dry operation drilling and waterless pouring of concrete |
| JP2016089404A (en) * | 2014-10-31 | 2016-05-23 | 大成建設株式会社 | Grout method for cast-in-place concrete pile |
| CN108130904A (en) * | 2017-12-25 | 2018-06-08 | 浙江大学城市学院 | A kind of construction method of the composite bushing drill-pouring pilework of neighbouring existing subway |
-
2018
- 2018-12-11 CN CN201811508159.9A patent/CN109610495A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926409A (en) * | 2011-08-09 | 2013-02-13 | 上海建工五建集团有限公司 | Construction method for preventing water and soil loss |
| CN104110028A (en) * | 2014-07-07 | 2014-10-22 | 河北省水利工程局 | Grouting pile construction method for dry operation drilling and waterless pouring of concrete |
| JP2016089404A (en) * | 2014-10-31 | 2016-05-23 | 大成建設株式会社 | Grout method for cast-in-place concrete pile |
| CN108130904A (en) * | 2017-12-25 | 2018-06-08 | 浙江大学城市学院 | A kind of construction method of the composite bushing drill-pouring pilework of neighbouring existing subway |
Non-Patent Citations (4)
| Title |
|---|
| 叶新平等: "《土木建筑工程施工工艺标准》", 31 July 2006, 国防科技大学出版社 * |
| 沈保汉等: "捷程(MZ)系列全套管钻机喀斯特地层嵌岩灌注桩施工工法", 《工程机械与维修》 * |
| 闫庆生: "桥梁桩基临近既有地铁线施工技术研究", 《铁道建筑技术》 * |
| 陈林等: "全护筒桩基施工方法在临近构筑物桩基施工中的应用", 《市政技术》 * |
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Application publication date: 20190412 |
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