CN108316670A - Steel pipe underpinning construction method under a kind of existing construction foundation basis - Google Patents
Steel pipe underpinning construction method under a kind of existing construction foundation basis Download PDFInfo
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- CN108316670A CN108316670A CN201810137988.4A CN201810137988A CN108316670A CN 108316670 A CN108316670 A CN 108316670A CN 201810137988 A CN201810137988 A CN 201810137988A CN 108316670 A CN108316670 A CN 108316670A
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- steel pipe
- pipe
- drilling machine
- construction
- building
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/06—Separating, lifting, removing of buildings; Making a new sub-structure
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/48—Foundations inserted underneath existing buildings or constructions
-
- 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
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Mining & Mineral Resources (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Piles And Underground Anchors (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention discloses steel pipe underpinning construction method under a kind of existing construction foundation basis, drilling machine underpins building side working face quasi-, and double-wall drill pipe is punched foundation soil to the building other side, removes interior drilling rod；Outer wall pipe bit is removed, uses connector to be locked with drilling machine outer wall pipe with outer wall pipe equal diameter steel pipe into the soil body being intended to underpin；Drilling machine is pulled back outer wall pipe, and drive underpins steel pipe and drags together, while in drilling machine active side removal outer wall pipe section by section, being dragged in completely in predetermined foundation soil until steel pipe is underpined；Successively steel pipe construction is underpined by root completion；It can be built into steel reinforcement cage, grout injection or cement mortar to steel pipe is underpined, increase the rigidity for underpining steel pipe.The construction method and simple for process of the present invention, very small to structure foundation soil construction disturbance, no collapse hole risk can closely carry out underpinning construction under building basis, can the operation in narrow construction space, meet the irrealizable construction of traditional construction engineering method.
Description
Technical field
The present invention is steel pipe underpinning construction method under a kind of existing construction foundation basis, belongs to existing building foundation
Field of reinforcement.
Background technology
With Chinese national economy fast development, urban construction scale and underground space development constantly expand, in recent years, both
There are building especially and need existing old house to be protected, the foundation underpinning project of landmark increasing.
In most cases, existing old house, landmark have the characteristics that building is of the remote past, structure type is fragile,
When carrying out underpinning construction under the foundation, it is desirable that cannot generate foundation soil and superstructure compared with large disturbances, foundation soil cannot be caused
It caves in.And certain special formation situations and construction operation condition, such as foundation soil are sandy gravel, silt, weak soil, banketed,
Rich groundwater, basis is lower closely to carry out underpinning construction, and construction space operation is narrow, very using traditional pipe roof construction engineering method
Hardly possible is applicable in, therefore just needs a kind of new construction method, to realize in above-mentioned certain special formation situations and construction operation condition
Under steel pipe underpinning construction.
Invention content
The purpose of the present invention is to provide a kind of simple operation, it is cheap, safe and reliable, quality is high-quality the advantages that both
There is steel pipe underpinning construction method under building foundation, foundation soil and superstructure are generated compared with large disturbances to avoid construction, from
And cause that foundation soil caves in and building occurs larger sedimentation and even cracks, and working space is overcome to be limited, accelerate construction progress,
It finally ensures the construction quality, reduces construction cost, creates maximum return.
To achieve the above object, the present invention provides steel pipe underpinning construction method under a kind of existing construction foundation basis, packets
Include following steps：
Step 1: excavating the quasi- building both sides that underpin to basic following designed elevation, smooth location ensures that drilling machine can be just
Often walking and work；
Step 2: drilling machine drives into building side work-yard i.e. active side, the double-wall drill pipe of drilling machine is pierced along level
It in the quasi- foundation soil underpined under building basis, and punches to quasi- and underpins building other side working face, remove the interior brill of drilling machine
Bar；
Step 3: removing drilling machine outer wall pipe bit, steel pipe is underpined using connector and drilling machine into the soil body being intended to underpin
Outer wall pipe is locked；
Step 4: starting drilling machine, drilling machine outer wall pipe of pulling back underpins steel pipe and drags together, and building basis is underpined into quasi-
Under foundation soil in, rotated simultaneously when ground soil resistance is big, shake drilling machine outer wall pipe and pull back, at the same drilling machine active side section by section
Removal outer wall pipe is dragged in until steel pipe is underpined in predetermined foundation soil completely.
Step 5: being built into steel reinforcement cage, grout injection or cement mortar to steel pipe is underpined, increase underpins the rigid of steel pipe
Degree.
Step 6: repeating step 1-step 5, the construction for underpining steel pipe is completed by root successively, building base is underpined quasi-
Formed in foundation soil under plinth closely connect it is in a row underpin steel pipe, underpin steel pipe both ends and be fixed on and quasi- underpin building both sides
Joist on, joist is fixed in vertical exchange pillar or stake, hold it is quasi- underpin building, ensure quasi- to underpin building stability.
Step 7: carrying out underground space earth excavation and Underground Construction under underpinning structure.
In a kind of preferred construction method, double-wall drill pipe is crept into step 2, inputs circulation fluid using interior drilling rod, inside
Deslagging between drilling rod and outer wall pipe.
In a kind of preferred construction method, it is intended to underpin the steel pipe in foundation soil in step 3 and is necessarily less than or equal to brill
Machine outer wall pipe diameter just can guarantee that step 4 is smoothed out in this way.
In a kind of preferred construction method, the connector in step 3 is connect with drilling machine outer wall pipe screw thread, and underpins steel
Pipe uses pin joint, welding or threaded connection.
In a kind of preferred construction method, it is the complete steel pipe that a satisfaction underpins length that steel pipe is underpined in step 4,
Or it is soldered to section by section using short steel pipes and underpins length.
In a kind of preferred construction method, step 5 need to be required according to underpinning beam, and decision underpins whether steel pipe needs
It is built into steel reinforcement cage, grout injection or cement mortar, to increase the rigidity for underpining steel pipe.
In a kind of preferred construction method, joist is armored concrete fine strain of millet or section steel beam in step 6, will side by side
Steel pipe is underpined to fix, joist is fixed in vertical exchange pillar or stake, hold it is quasi- underpin building, ensure that quasi- to underpin building steady
It is fixed.
The construction method and simple for process, no collapse hole risk very small to structure foundation soil construction disturbance of the present invention, can
Underpinning construction is closely carried out under building basis, can the operation in narrow construction space, meet traditional construction engineering method
Irrealizable construction.
Description of the drawings
Fig. 1 is the implementing procedure figure of the present invention.
Fig. 2 is to underpin steel pipe construction diagrammatic cross-section.
Fig. 3 is diagrammatic cross-section after the completion of underpining.
Specific implementation mode
With reference to specific embodiment, the present invention will be further described.
As shown in Fig. 1, a kind of existing construction foundation basis steel pipe underpinning construction engineering method shown in the present invention, this method packet
It includes：Excavate the following designed elevation in building both sides to basis, smooth location；Drilling machine drives into the (work of building side work-yard
Side), double-wall drill pipe is pierced under building basis in foundation soil by design angle, and punches to building other side working face,
Segment of drillpipe in removing；Outer wall pipe bit is removed, steel pipe is underpined using connector and outer wall pipe lock into the soil body being intended to underpin
Tightly；Start drilling machine, outer wall pipe of pulling back underpins steel pipe and drags together, into foundation soil, can turn simultaneously when ground soil resistance is big
Dynamic, vibrations outer wall pipe is pulled back, while in drilling machine active side removal outer wall pipe section by section, until being dragged in reservation place completely steel pipe is underpined
In base soil；It can be built into steel reinforcement cage, grout injection or cement mortar to steel pipe is underpined, increase equal diameter and underpin the rigid of steel pipe
Degree.As shown in Fig. 2.
The construction for underpining steel pipe by root completion successively, forms in foundation soil in this way under building basis and closely connects into one
Row's underpins steel pipe, underpins steel pipe both ends and is fixed on the joist of building both sides, and joist is fixed on vertical exchange pillar (stake),
Building is held, ensures building stability；Carry out underground space earth excavation and Underground Construction under underpinning structure.Such as attached drawing
Shown in 3.
The diameter for underpining steel pipe be necessarily equal to or less than drilling machine outer wall pipe diameter.Connector and drilling machine outer wall pipe spiral shell
Line connects, and pin joint, welding or threaded connection can be used with steel pipe is underpined, and easy to disassemble.It is that a satisfaction underpins to underpin steel pipe
The complete steel pipe of length can also be section by section soldered to using short steel pipes and underpin length, and wall thickness, which need to meet, underpins load requirement.Double-walled
When rod boring, circulation fluid, the deslagging between interior drilling rod and outer wall pipe are inputted using interior drilling rod.It is required according to underpinning beam, certainly
Surely underpin whether steel pipe needs to be built into steel reinforcement cage, grout injection or cement mortar.
It is the exemplary embodiments of the present invention above, implementation of the invention is without being limited thereto.
Claims (7)
1. steel pipe underpinning construction method under a kind of existing construction foundation basis, it is characterised in that：Include the following steps：
Step 1: excavating the quasi- building both sides that underpin to basic following designed elevation, smooth location ensures that drilling machine being capable of normal row
It walks and works；
Step 2: drilling machine drives into building side work-yard i.e. active side, the double-wall drill pipe of drilling machine is pierced into quasi- support along level
It changes in the foundation soil under building basis, and punches to quasi- and underpin building other side working face, remove the interior drilling rod of drilling machine；
Step 3: removing drilling machine outer wall pipe bit, steel pipe is underpined using connector and drilling machine outer wall into the soil body being intended to underpin
Pipe is locked；
Step 4: starting drilling machine, drilling machine outer wall pipe of pulling back underpins steel pipe and drags together, is underpined under building basis into quasi-
It in foundation soil, rotated simultaneously when ground soil resistance is big, shake drilling machine outer wall pipe and pull back, while in drilling machine active side removal section by section
Outer wall pipe is dragged in until steel pipe is underpined in predetermined foundation soil completely；
Step 5: being built into steel reinforcement cage, grout injection or cement mortar to steel pipe is underpined, increase the rigidity for underpining steel pipe；
Step 6: repeating step 1-step 5, the construction for underpining steel pipe is completed by root successively, is underpined under building basis quasi-
Foundation soil in formed closely connect it is in a row underpin steel pipe, underpin steel pipe both ends and be fixed on the quasi- support for underpining building both sides
Liang Shang, joist are fixed in vertical exchange pillar or stake, are held and are intended underpining building, ensure to intend underpining building stability；
Step 7: carrying out underground space earth excavation and Underground Construction under underpinning structure.
2. steel pipe underpinning construction method under a kind of existing construction foundation basis according to claim 1, it is characterised in that：Step
Double-wall drill pipe is crept into rapid two, and circulation fluid, the deslagging between interior drilling rod and outer wall pipe are inputted using interior drilling rod.
3. steel pipe underpinning construction method under a kind of existing construction foundation basis according to claim 1, it is characterised in that：Step
It is intended to underpin the steel pipe in foundation soil in rapid three and is necessarily less than or is equal to drilling machine outer wall pipe diameter, just can guarantee that step 4 is suitable in this way
Profit carries out.
4. steel pipe underpinning construction method under a kind of existing construction foundation basis according to claim 1, it is characterised in that：Step
Connector in rapid three is connect with drilling machine outer wall pipe screw thread, and pin joint, welding or threaded connection are used with steel pipe is underpined.
5. steel pipe underpinning construction method under a kind of existing construction foundation basis according to claim 1, it is characterised in that：Step
It is the complete steel pipe that a satisfaction underpins length that steel pipe is underpined in rapid four, or is soldered to section by section using short steel pipes and underpins length.
6. steel pipe underpinning construction method under a kind of existing construction foundation basis according to claim 1, it is characterised in that：Step
Rapid five need to require according to underpinning beam, and decision underpins whether steel pipe needs to be built into steel reinforcement cage, grout injection or cement mortar,
To increase the rigidity for underpining steel pipe.
7. steel pipe underpinning construction method under a kind of existing construction foundation basis according to claim 1, it is characterised in that：Step
Joist is armored concrete fine strain of millet or section steel beam in rapid six, the steel pipe that underpins side by side is fixed, joist is fixed on vertical exchange pillar
Or in stake, hold and intend underpining building, ensures to intend underpining building stability.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810137988.4A CN108316670B (en) | 2018-02-10 | 2018-02-10 | Steel pipe underpinning construction method under existing building foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810137988.4A CN108316670B (en) | 2018-02-10 | 2018-02-10 | Steel pipe underpinning construction method under existing building foundation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108316670A true CN108316670A (en) | 2018-07-24 |
| CN108316670B CN108316670B (en) | 2020-01-10 |
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| CN201810137988.4A Active CN108316670B (en) | 2018-02-10 | 2018-02-10 | Steel pipe underpinning construction method under existing building foundation |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111335670A (en) * | 2020-03-18 | 2020-06-26 | 同济大学建筑设计研究院(集团)有限公司 | Method for constructing foundation pit and newly adding underground structure in situ under existing reserved building |
| CN111456080A (en) * | 2020-03-12 | 2020-07-28 | 浙江大学城市学院 | Steel pipe underpinning construction method under existing building foundation |
| CN113294010A (en) * | 2021-06-09 | 2021-08-24 | 广州市鲁班建筑科技集团股份有限公司 | Structure for separating bottom of ancient coffin chamber and construction method thereof |
| CN113323011A (en) * | 2021-06-30 | 2021-08-31 | 武汉武建机械施工有限公司 | Novel underpinning construction method for steel pipe under existing building foundation |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101956466A (en) * | 2010-09-13 | 2011-01-26 | 董兰田 | Technical method for finishing vertical lifting in integral translation process of building |
| CN102127974A (en) * | 2011-04-18 | 2011-07-20 | 上海现代建筑设计(集团)有限公司 | Design and construction method of additional cellar under existing building |
| CN203856227U (en) * | 2014-03-21 | 2014-10-01 | 上海建工四建集团有限公司 | In-situ underground spatial structure of existing building |
| CN207739298U (en) * | 2017-10-13 | 2018-08-17 | 建研地基基础工程有限责任公司 | A kind of existing construction foundation basis steel pipe underpinning construction device |
-
2018
- 2018-02-10 CN CN201810137988.4A patent/CN108316670B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101956466A (en) * | 2010-09-13 | 2011-01-26 | 董兰田 | Technical method for finishing vertical lifting in integral translation process of building |
| CN102127974A (en) * | 2011-04-18 | 2011-07-20 | 上海现代建筑设计(集团)有限公司 | Design and construction method of additional cellar under existing building |
| CN203856227U (en) * | 2014-03-21 | 2014-10-01 | 上海建工四建集团有限公司 | In-situ underground spatial structure of existing building |
| CN207739298U (en) * | 2017-10-13 | 2018-08-17 | 建研地基基础工程有限责任公司 | A kind of existing construction foundation basis steel pipe underpinning construction device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111456080A (en) * | 2020-03-12 | 2020-07-28 | 浙江大学城市学院 | Steel pipe underpinning construction method under existing building foundation |
| CN111335670A (en) * | 2020-03-18 | 2020-06-26 | 同济大学建筑设计研究院(集团)有限公司 | Method for constructing foundation pit and newly adding underground structure in situ under existing reserved building |
| CN113294010A (en) * | 2021-06-09 | 2021-08-24 | 广州市鲁班建筑科技集团股份有限公司 | Structure for separating bottom of ancient coffin chamber and construction method thereof |
| CN113323011A (en) * | 2021-06-30 | 2021-08-31 | 武汉武建机械施工有限公司 | Novel underpinning construction method for steel pipe under existing building foundation |
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| CN108316670B (en) | 2020-01-10 |
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