CN110424480A - Buildings pile guard method - Google Patents
Buildings pile guard method Download PDFInfo
- Publication number
- CN110424480A CN110424480A CN201910760260.1A CN201910760260A CN110424480A CN 110424480 A CN110424480 A CN 110424480A CN 201910760260 A CN201910760260 A CN 201910760260A CN 110424480 A CN110424480 A CN 110424480A
- Authority
- CN
- China
- Prior art keywords
- pile foundation
- deformed steel
- steel flats
- pile
- buildings
- 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.)
- Pending
Links
Classifications
-
- 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
- E02D37/00—Repair of damaged foundations or foundation structures
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a kind of buildings pile guard methods, comprising the following steps: tunnel excavation uses hand excavation close at buildings pile, exposes existing pile foundation part of the surface；After pile foundation surface discloses, according to Pile Foundations Design deformed steel flats, it is ensured that deformed steel flats is bonded pile foundation surface；Anchor hole is drilled on deformed steel flats；Deformed steel flats is installed in pile foundation, and carries out position correction, slip casting is filled between deformed steel flats and pile foundation；Anchor cable is installed in maintenance in anchor hole after expiring, carry out prestressed stretch-draw；From top to bottom layering cuts the outer ground of pile foundation step by step, and installs deformed steel flats, stretch-draw anchor step by step according to abovementioned steps.Above-mentioned buildings pile guard method; it does not destroy and existing invades limit building pile foundation; ensure pile foundation top-out structure safety; using deformed steel flats Prestressing anchor cable; simple structure, stress is clear, and it is convenient to construct; using step by step when excavating by the way of supporting, structure is avoided to be in unfavorable stress in the construction process.
Description
Technical field
The present invention relates to technical field of tunnel construction, and in particular to a kind of buildings pile guard method.
Background technique
Extensional mode, centrifugal extensive mode, urban land use intensive degree are continued to use in China's urban development for many years
It is lower.With sharply increasing for urban population, automobile is increasingly becoming the popular vehicles, so occur space it is crowded, hand over
A series of "urban disease"s such as pass blocking plug and environmental degradation.Pedestrian environment twin cities are built, " under traffic, also green in the people " is exhaled
Sound is higher and higher.And with urban resource growing tension, city space three-dimensional, intensive and high-density development are also general trend of events institute
Become.Especially in some Downtowns, completed region of the city, urban streets construction can be dug without much potentiality, it has to from
Look for solving the long-acting plan of "urban disease" in urban underground space.
China lacks perspective overall planning to urban underground space and utilizes for a long time, and Impacts Evaluation of Urban Tunnel is built not
It can avoid undergrounds buildings or structures such as ground and existing underground space structure, rail traffic, building basement and pile foundation etc. to occur
Conflict is utilized to the underground space, design and construction bring greatly inconvenient and security risk.City tunnel planning construction and existing building
Pile foundation clashes case and can be found everywhere both at home and abroad, for invading the existing building pile foundation in tunnel construction space, mainly uses stake
Base underpinning technique, the technology destroy existing pile foundation structure, change building Path of Force Transfer, construction coordination is difficult, complex procedures.
Summary of the invention
Based on this, it is necessary to for the existing building pile foundation in intrusion tunnel construction space, Pile Underpinning Technology is mainly used,
The problem of technology destroys existing pile foundation structure, changes building Path of Force Transfer, and construction coordination is difficult, complex procedures, provides one kind
Buildings pile guard method.
A kind of buildings pile guard method, comprising the following steps:
Tunnel excavation uses hand excavation close at buildings pile, exposes existing pile foundation part of the surface；
After pile foundation surface discloses, deformed steel flats is designed according to the apparent size of pile foundation, it is ensured that the deformed steel flats is bonded stake
Primary surface；
Anchor hole is drilled on the deformed steel flats；
Deformed steel flats is installed in pile foundation, and carries out position correction, slip casting is filled between deformed steel flats and pile foundation；
Anchor cable is installed in maintenance in anchor hole after expiring, carry out prestressed stretch-draw；
From top to bottom layering cuts the outer ground of pile foundation step by step, and installs deformed steel flats, tensioning anchor step by step according to abovementioned steps
Rope.
In one of the embodiments, when pile foundation bottom is arrived in construction, pile foundation bottom country rock is not excavated, directly on country rock
Deformed steel flats is installed.
The deformed steel flats includes the interconnecting piece of main body and main body two sides in one of the embodiments, and the main body is used
In fitting in pile foundation, the anchor hole is opened on the interconnecting piece.
The both ends of the deformed steel flats are bent to form the connection by opposite twice in one of the embodiments,
Portion.
In one of the embodiments, the step of being drilled with anchor hole on the deformed steel flats specifically:
Anchorage point is demarcated, anchor hole is drilled with using drilled dry, and clear up anchor hole.
In one of the embodiments, maintenance expire after in anchor hole prestressed anchor cable, carry out prestressed stretch-draw
Step specifically:
Anchor cable is installed in maintenance in anchor hole after expiring, first pre- tensioning, then integral tension is tight.
The deformed steel flats is equipped with floor far from the side of pile foundation in one of the embodiments,.
Deformed steel flats is installed in pile foundation in one of the embodiments, and carries out position correction, in deformed steel flats and
After the step of filling slip casting between pile foundation further include:
In surface sprayed fire proofing coating of the deformed steel flats far from pile foundation.
Above-mentioned buildings pile guard method, do not destroy it is existing invade limit building pile foundation, maintain the original stress of pile foundation, really
Pile foundation upper body structural safety is protected, using deformed steel flats Prestressing anchor cable, the guard method novel form, construction letter
Single, stress is clear, and it is convenient to construct, and using step by step when excavating by the way of supporting, structure is avoided to be in unfavorable in the construction process
Stress.
Detailed description of the invention
Fig. 1 is the flow chart of buildings pile guard method in an embodiment；
Fig. 2 is the schematic diagram of deformed steel flats supporting pile foundation；
Fig. 3 is the schematic diagram for successively installing deformed steel flats and stretch-draw anchor step by step downwards.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.Many details are explained in the following description in order to fully understand this hair
It is bright.But the invention can be embodied in many other ways as described herein, those skilled in the art can be not
Similar improvement is done in the case where violating intension of the present invention, because the invention is not limited by following public specific implementation.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement for illustrative purposes only, are not meant to be the only embodiment.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.
Please refer to Fig.1 to Fig.3, the buildings pile guard method in an embodiment, for road tunnel construction in
When the pile foundation 10 of existing building clashes, the pile foundation 10 of existing building is protected.Specifically, the buildings pile protection side
Method includes the following steps:
Step S110: tunnel excavation uses hand excavation close at buildings pile 10, exposes 10 part table of existing pile foundation
Face.
Specifically, tunnel excavation face close to existing building pile foundation 10 when take manual work, control is excavated drilling depth, is kept away
Exempt to be damaged to pile foundation 10.It from top to bottom excavates gradually, until disclosing 10 part of the surface of existing pile foundation.In present embodiment, first
Stage cutting depth is 18cm, after the pile foundation 10 wait appear applies protection, then applies protection when excavating step by step, avoids pile foundation 10
It is in unfavorable stress in the construction process.
Step S120: after 10 surface of pile foundation discloses, deformed steel flats 100 is designed according to the apparent size of pile foundation 10, it is ensured that different
Shape steel plate 100 is bonded 10 surface of pile foundation.
Specifically, deformed steel flats 100 includes the interconnecting piece 120 of 110 two sides of main body 110 and main body, and main body 110 is for being bonded
Onto pile foundation 10, interconnecting piece 120 is for installing anchor cable 200.Deformed steel flats 100, which is equipped with floor far from the side of pile foundation 10, (schemes not
Show), floor is used to reinforce the rigidity of deformed steel flats 100, and 100 stress of deformed steel flats is avoided to be bent.In present embodiment, profile iron
The both ends of plate 100 are bent to form interconnecting piece 120, after 100 first time of deformed steel flats bends inwards, profile iron by opposite twice
Plate 100 is U-shaped, so that deformed steel flats 100 is bonded 10 surface of pile foundation, second of the outward bending of deformed steel flats 100 forms interconnecting piece
120, to facilitate the installation of subsequent anchor cable 200.The width of deformed steel flats 100 is 40cm, and the length of interconnecting piece 120 is 26cm.
Step S130: anchor hole is drilled on deformed steel flats 100.
Specifically, anchor hole is opened on interconnecting piece 120.In present embodiment, anchorage point is demarcated on interconnecting piece 120,
Then anchor hole is drilled with using drilled dry, and clears up anchor hole, use the modes such as casing follow-up when necessary, in order to avoid hole wall collapse or bit freezing,
Borehole cleaning is blown off using high-pressure blast after being drilled.
Step S140: deformed steel flats 100 is installed in pile foundation 10, and carries out aligning, in deformed steel flats 100 and stake
Slip casting is filled between base 10.
Specifically, after deformed steel flats 100 being installed in pile foundation 10, the position of deformed steel flats 100 is corrected, is guaranteed
Deformed steel flats 100 is bonded 10 surface of pile foundation, and M30 mortar is then filled between deformed steel flats 100 and pile foundation 10, avoids deformed steel flats
There is gap between 100 and pile foundation 10.It, can be separate in deformed steel flats 100 after filling mortar between deformed steel flats 100 and pile foundation 10
The surface sprayed fire proofing coating of pile foundation 10, avoids pile foundation 10 from being burned out in a fire.
Step S150: maintenance installs anchor cable 200 after expiring in anchor hole, carries out prestressed stretch-draw.
Specifically, when carrying out 200 tensioning of prestress anchorage cable after maintenance expires, first pre- tensioning, then integral tension are tight.
Step S160: from top to bottom layering cuts the outer ground of pile foundation 10 step by step, and installs abnormity step by step according to abovementioned steps
Steel plate 100, stretch-draw anchor 200.
Specifically, after the completion of the installation of the deformed steel flats of upper level 100 and tensioning, next stage pile foundation 10 is successively cut downwards
Outer ground installs next stage deformed steel flats 100 and stretch-draw anchor 200, realizes the mode of the supporting when excavating step by step, avoids structure
It is in unfavorable stress in the construction process.
In present embodiment, when 10 bottom of pile foundation is arrived in construction, 10 bottom country rock of pile foundation is not excavated, and directly pacifies on country rock
Fill deformed steel flats 100, and stretch-draw anchor 200.If pile foundation 10 is not invaded limit, then do not have to disclose pile foundation 10, directly on country rock
Carry out 100 supporting of deformed steel flats.
Above-mentioned 10 guard method of buildings pile does not destroy existing invade and limits building pile foundation 10, maintains the original stress of pile foundation 10
State, it is ensured that 10 upper body of pile foundation, 110 structural safety, using 100 Prestressing anchor cable 200 of deformed steel flats, the protection
Method form is novel, and simple structure, stress is clear, and it is convenient to construct, and using step by step when excavating by the way of supporting, structure is avoided to exist
Unfavorable stress is in work progress.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (8)
1. a kind of buildings pile guard method, which comprises the following steps:
Tunnel excavation uses hand excavation close at buildings pile, exposes existing pile foundation part of the surface；
After pile foundation surface discloses, deformed steel flats is designed according to the apparent size of pile foundation, it is ensured that the deformed steel flats is bonded pile foundation table
Face；
Anchor hole is drilled on the deformed steel flats；
Deformed steel flats is installed in pile foundation, and carries out position correction, slip casting is filled between deformed steel flats and pile foundation；
Anchor cable is installed in maintenance in anchor hole after expiring, carry out prestressed stretch-draw；
From top to bottom layering cuts the outer ground of pile foundation step by step, and installs deformed steel flats, stretch-draw anchor step by step according to abovementioned steps.
2. buildings pile guard method according to claim 1, which is characterized in that when pile foundation bottom is arrived in construction, stake
Basal part country rock does not excavate, and deformed steel flats is directly installed on country rock.
3. buildings pile guard method according to claim 1, which is characterized in that the deformed steel flats include main body and
The interconnecting piece of main body two sides, for fitting to pile foundation, the anchor hole is opened on the interconnecting piece main body.
4. buildings pile guard method according to claim 3, which is characterized in that the both ends of the deformed steel flats are passed through
Opposite twice is bent to form the interconnecting piece.
5. buildings pile guard method according to claim 1, which is characterized in that be drilled with anchor on the deformed steel flats
The step of hole specifically:
Anchorage point is demarcated, anchor hole is drilled with using drilled dry, and clear up anchor hole.
6. buildings pile guard method according to claim 1, which is characterized in that maintenance is installed in anchor hole after expiring
The step of prestress anchorage cable, progress prestressed stretch-draw specifically:
Anchor cable is installed in maintenance in anchor hole after expiring, first pre- tensioning, then integral tension is tight.
7. buildings pile guard method according to claim 1, which is characterized in that the deformed steel flats is far from pile foundation
Side is equipped with floor.
8. buildings pile guard method according to claim 1, which is characterized in that deformed steel flats is installed to pile foundation
On, and after the step of carrying out position correction, slip casting is filled between deformed steel flats and pile foundation further include:
In surface sprayed fire proofing coating of the deformed steel flats far from pile foundation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910760260.1A CN110424480A (en) | 2019-08-16 | 2019-08-16 | Buildings pile guard method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910760260.1A CN110424480A (en) | 2019-08-16 | 2019-08-16 | Buildings pile guard method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110424480A true CN110424480A (en) | 2019-11-08 |
Family
ID=68415069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910760260.1A Pending CN110424480A (en) | 2019-08-16 | 2019-08-16 | Buildings pile guard method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110424480A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10252062A (en) * | 1997-03-07 | 1998-09-22 | Atsugi Technos:Kk | Method for protecting pile supporting structure |
| CN2923824Y (en) * | 2006-07-20 | 2007-07-18 | 中国京冶建设工程承包公司 | Inlaid section-steel waist-beam |
| CN102493459A (en) * | 2011-11-24 | 2012-06-13 | 天津二十冶建设有限公司 | Building isolation support construction method for constructing deep foundation in narrow environment |
| CN103147443A (en) * | 2013-03-18 | 2013-06-12 | 中国建筑第八工程局有限公司 | Foundation pit supporting structure and construction method thereof |
| CN103266604A (en) * | 2013-05-03 | 2013-08-28 | 中冶集团武汉勘察研究院有限公司 | Hoop-type circular-section anchor-rod slide-resistant pile and construction method thereof |
| CN203307804U (en) * | 2013-06-09 | 2013-11-27 | 湖北省交通规划设计院 | Hoop structure for connecting round antiskid pile and anchor rod |
| CN203808065U (en) * | 2014-03-17 | 2014-09-03 | 中冶集团武汉勘察研究院有限公司 | Omega-shaped structure for lapping round anti-skid pile and anchor cables |
-
2019
- 2019-08-16 CN CN201910760260.1A patent/CN110424480A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10252062A (en) * | 1997-03-07 | 1998-09-22 | Atsugi Technos:Kk | Method for protecting pile supporting structure |
| CN2923824Y (en) * | 2006-07-20 | 2007-07-18 | 中国京冶建设工程承包公司 | Inlaid section-steel waist-beam |
| CN102493459A (en) * | 2011-11-24 | 2012-06-13 | 天津二十冶建设有限公司 | Building isolation support construction method for constructing deep foundation in narrow environment |
| CN103147443A (en) * | 2013-03-18 | 2013-06-12 | 中国建筑第八工程局有限公司 | Foundation pit supporting structure and construction method thereof |
| CN103266604A (en) * | 2013-05-03 | 2013-08-28 | 中冶集团武汉勘察研究院有限公司 | Hoop-type circular-section anchor-rod slide-resistant pile and construction method thereof |
| CN203307804U (en) * | 2013-06-09 | 2013-11-27 | 湖北省交通规划设计院 | Hoop structure for connecting round antiskid pile and anchor rod |
| CN203808065U (en) * | 2014-03-17 | 2014-09-03 | 中冶集团武汉勘察研究院有限公司 | Omega-shaped structure for lapping round anti-skid pile and anchor cables |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101834847B1 (en) | Echo-environmental construction method of tunnel portal area using mini pipe-roof | |
| KR100957599B1 (en) | Basement-structure construction method to use temporary earth retaining structure | |
| CN203361033U (en) | Protective device for intercepting falling rocks of through cut | |
| CN103410152B (en) | A kind of construction method for long and narrow deep foundation pit earthwork digging | |
| CN205822220U (en) | A kind of assembled open caisson | |
| CN108547628B (en) | Quick construction method for pipe-jacking working well in upper-soft and lower-hard stratum | |
| JP2009174178A (en) | Method of constructing underground structure | |
| CN110424480A (en) | Buildings pile guard method | |
| KR20090011442A (en) | Tunnel boring method using sheet pile and tunnel structure therof | |
| CN110512594A (en) | The simple and easy method of churning driven opportunity cavity pore-forming | |
| KR102267676B1 (en) | A method of construction for temporary retaining wall and sheating work cup using its method | |
| CN104746530A (en) | Novel construction method for closing traffic in short time | |
| KR100476839B1 (en) | Construction method for installing concrete underground structures | |
| JP2001317217A (en) | Base isolation building construction under foundation of exiting building | |
| KR100701885B1 (en) | Non-open cut pipe installation method | |
| KR100432782B1 (en) | Supporting structure for tunnel and underground tunnel construction method using the same | |
| JPH11247195A (en) | Temporary earth retaining wall structure and temporary earth retaining wall execution method | |
| CN108678755B (en) | Quick construction method for soft rock stratum pipe jacking working well | |
| KR20200003488A (en) | Underground road using self-supporting pile wall with temporary wall and its construction method | |
| KR20200088659A (en) | Top-down type underground structure construction method using earth support plate | |
| CN108661651B (en) | Rapid construction method for hard rock stratum pipe jacking working well | |
| KR102325548B1 (en) | Sheating work cup using method of construction for temporary retaining wall | |
| KR200222445Y1 (en) | The ground reinforcement structure used soil nailing | |
| Koliji et al. | Extending the urban underground utility network capacity–A long drive large diameter pipe-jacking tunnel | |
| KR20100134374A (en) | Structure for slope protection using stone and construction method thereof |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191108 |