CN108166504A - A kind of reinforced double steel sheet piling pit supporting construction and its construction method - Google Patents
A kind of reinforced double steel sheet piling pit supporting construction and its construction method Download PDFInfo
- Publication number
- CN108166504A CN108166504A CN201810045614.XA CN201810045614A CN108166504A CN 108166504 A CN108166504 A CN 108166504A CN 201810045614 A CN201810045614 A CN 201810045614A CN 108166504 A CN108166504 A CN 108166504A
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- steel sheet
- sheet pile
- pile
- double steel
- arch
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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
- 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
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/02—Sheet piles or sheet pile bulkheads
- E02D5/03—Prefabricated parts, e.g. composite sheet piles
- E02D5/04—Prefabricated parts, e.g. composite sheet piles made of steel
-
- 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
- E02D5/46—Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil
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- Engineering & Computer Science (AREA)
- Structural Engineering (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)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The invention discloses a kind of reinforced double steel sheet piling pit supporting construction and its construction methods, and including several arch mixing piles, the arch openend of the arch mixing pile is set close to steel sheet pile, and construction method includes step：S1, construction arch mixing pile, to form arch churned pile wall；S2, the double steel sheet pile of construction, and take out and drop the level of ground water of the soil body among double steel sheet pile to stake bottom；S3, shallow hole is excavated between double steel sheet pile, and multilayer rigid connector is set to connect double steel sheet pile in the shallow hole；At S4, the backfill shallow hole to stake top absolute altitude, excavation pit；Double steel sheet pile is transferred to after the completion of S5, foundation pit.The present invention is intended to provide a kind of reinforced double steel sheet piling pit supporting construction and its construction method so that the supporting construction can be suitably used for a variety of geological environments, and support rigidity is big, stability is good, can substantially improve the excessive situation of foundation pit displacement.
Description
Technical field
The invention belongs to geotechnical engineering field, more particularly, to a kind of reinforced double steel sheet piling pit supporting construction
And its construction method.
Background technology
Along with the development of urban skyscraper engineering, excavation of foundation pit and its supporting become major issue, and with city
Mining inetesity increases, and the reliability of pattern foundation pit supporting structure also becomes one of key factor for influencing engineering safety.Pattern foundation pit supporting structure is
To ensure the safety of Underground Construction and foundation pit surrounding enviroment, the supporting and retaining system that is used to foundation pit side-wall and surrounding enviroment, reinforce with
Safeguard measure；The safety for main structure construction under protecting field and foundation pit surrounding enviroment, to foundation pit use provisional supporting and retaining system,
Reinforcing, protection and the measure of Groundwater Control.
Steel sheet pile has extensive use in architectural engineering, underground engineering, port engineering and slope protection works, and plays
Important support action；There is use in the geological disasters such as flood-fighting, Treatment for collapse and Harnessing of Landslide, and give full play to
Steel sheet pile construction speed is fast and the advantages of recoverable.But in existing steel sheet pile supporting structure system, because of steel sheet pile supporting
Rigidity is small, and junction is weaker so that the suspended wall supporting depth of single steel sheet pile is more limited；And can not be suitable for soil property compared with
The high deeper soft soil area of difference, excavation of foundation pit depth requirements.
Invention content
To solve the deficiency in the prior art, the purpose of the present invention is to provide a kind of reinforced double steel sheet pile foundation pit branch
Protection structure and its construction method so that the supporting construction can be suitably used for a variety of geological environments, and support rigidity is big, stability is good, can
Substantially improve the excessive situation of foundation pit displacement.
To solve the above problems, the present invention provides a kind of reinforced double steel sheet piling pit supporting construction, including by first
Steel sheet pile and the second steel sheet pile are oppositely arranged the double steel sheet pile of composition, and excavation of foundation pit is in the side of the double steel sheet pile, institute
The opposite side for stating double steel sheet pile is provided with several arch mixing piles, and the arch openend of the arch mixing pile is close to described
Double steel sheet pile setting.
Further, arch mixing pile described in each two shares an arch foot, and the double steel is abutted by the arch foot
Sheet pile.
Further, the arch mixing pile includes several cylinder piles, is overlapped between the cylinder pile by being mutually twisted
It overarches.
Further, it is connected with rigid connector between first steel sheet pile and second steel sheet pile.
Further, the rigid connector is layered setting from top to bottom.
Further, the rigid connector is reinforcing bar, and the reinforcement welding connects first steel sheet pile and described the
Two steel sheet piles.
A kind of construction method of double steel sheet piling pit supporting construction reinforced as described above, includes the following steps：
S1, the construction arch mixing pile, to form arch churned pile wall；
S2, the double steel sheet pile of arch mixing pile construction is abutted, and takes out the underground water for dropping the soil body among double steel sheet pile
Position to stake bottom；
S3, shallow hole is excavated between double steel sheet pile, and multilayer rigid connector is set to connect in the shallow hole
State double steel sheet pile；
At S4, the backfill shallow hole to stake top absolute altitude, excavation pit；
Double steel sheet pile is transferred to after the completion of S5, foundation pit.
Further, first steel sheet pile and second steel sheet pile are being longitudinally to be arranged in parallel, horizontal distance setting
It is 2-4 meters.
Further, the rigid connector is the steel being welded between first steel sheet pile and second steel sheet pile
Muscle, the layering spacing of the reinforcing bar are set as 0.5-1 meters.
Further, the cutting depth of the shallow hole is 2-4 meters, and the shallow hole carries out layered rolling using easy compacted soil and returns
It fills out.
Using above-mentioned preferred embodiment, compared with prior art, the present invention has the following advantages：
1st, construction arch mixing pile using occlusion overlap joint between the stake of mixing pile, strengthens water-stagnating effect, has given full play to arch
The lateral pressure of the foundation pit behind soil body is turned the load transmission effects of the foundation pit behind soil body after excavation by shape structure by being evenly distributed
Become stirring pilework integrated distribution to arch, take full advantage of the advantages of double steel sheet pile bending stiffness is big, improve soil layer
Stability and soft, weak soil matrix hole safety.
2nd, the level of ground water for dropping soil layer in the middle part of double steel plate pilework is taken out, level of ground water is reduced, reduces and be applied to steel
Lateral Water And Earth Pressures on sheet-pile structure, improve base pit stability, reduce the risk of instability of foundation pit.
3rd, it before excavation of foundation pit, excavates soil layer in the middle part of double steel sheet pile and backfills easy compacted fill, excavation of foundation pit can be reduced
Soil pressure in horizontal direction afterwards after excavation of foundation pit, can reduce the lateral displacement of foundation pit, reduce in Excavation Process
Risk；Meanwhile pluggable double steel plate pilework the advantages of taking full advantage of steel sheet pile recoverable, reduce supporting
Structure improves the utilization rate of steel sheet pile and the economy of foundation pit construction in the remaining situation in underground.
Description of the drawings
Technical solution in order to illustrate the embodiments of the present invention more clearly, below will be to needed in embodiment description
Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is some embodiments of the present invention, general for this field
For logical technical staff, without creative efforts, other attached drawings are can also be obtained according to these attached drawings.
Fig. 1 a are arch mixing pile cross-sectional view of the present invention；
Fig. 1 b are arch mixing pile dimensional structure diagram of the present invention；
Fig. 2 a are the cross-sectional view after arch mixing pile of the present invention is combined with steel sheet pile；
Fig. 2 b are the dimensional structure diagram after arch mixing pile of the present invention is combined with steel sheet pile；
Fig. 3 a are the cross-sectional view after shallow hole of the present invention excavates；
Fig. 3 b are the dimensional structure diagram after shallow hole of the present invention excavates；
Fig. 4 a are the cross-sectional view of rigid connector of the present invention layering setting；
Fig. 4 b are the dimensional structure diagram of rigid connector of the present invention layering setting；
Fig. 5 a are the cross-sectional view after shallow hole backfill of the present invention；
Fig. 5 b are the dimensional structure diagram after shallow hole backfill of the present invention；
Cross-sectional view when Fig. 6 a are excavation of foundation pit of the present invention；
Dimensional structure diagram when Fig. 6 b are excavation of foundation pit of the present invention；
Fig. 7 is supporting construction local overlooking structure diagram of the present invention；
Fig. 8 is local overlooking structure diagram when steel sheet pile of the present invention is connect with rigid connector；
Fig. 9 is the construction method flow diagram of supporting construction of the present invention；
Wherein：
The first steel sheet piles of 1-, the second steel sheet piles of 2-, 3- arch mixing piles, 4- rigid connectors, 5- locks, 6- pads,
The easy compacted fills of 7-, 8- foundation pits.
Specific embodiment
It is to better understand the objects, features and advantages of the present invention, below in conjunction with the accompanying drawings and specific real
Applying mode, the present invention will be described in detail.It should be noted that in the absence of conflict, presently filed embodiment and reality
Applying the feature in mode can be combined with each other.Many details are elaborated in the following description in order to fully understand this hair
Bright, described embodiment is only the embodiment of a part of embodiment of the present invention rather than whole.Based on the present invention
In embodiment, the every other implementation that those of ordinary skill in the art are obtained without making creative work
Mode shall fall within the protection scope of the present invention.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention
The normally understood meaning of technical staff is identical.Term used in the description of the invention herein is only specific to describe
Embodiment for the purpose of, it is not intended that in limitation the present invention.
The reinforced double steel sheet piling pit supporting construction of one kind as shown in figures 1-8, including by the first steel sheet pile 1 and second
Steel sheet pile 2 is oppositely arranged the double steel sheet pile of composition, and foundation pit 8 excavates the opposite side in second steel sheet pile 2, first steel
The opposite side of sheet pile 1 is provided with several arch mixing piles 3, and the arch openend of the arch mixing pile 3 is close to described first
Steel sheet pile 1 is set.
Preferably, sharing an arch foot between arch mixing pile 3 described in each two, described the is abutted by the arch foot
One steel sheet pile 1.The arch mixing pile 3 includes several cylinder piles, is overarched between the cylinder pile by being mutually twisted overlap joint.
In double steel sheet pile backwards to the side of excavation pit 8 setting arch mixing pile 3, domes are given full play to foundation pit after excavation 8
The lateral pressure of the 8 behind soil body of foundation pit is changed into from being evenly distributed to arch mixing pile 3 by the load transmission effects of the behind soil body
Structure integrated distribution, so as to take full advantage of the advantages of double steel sheet pile bending stiffness is big.
Preferably, being excavated between first steel sheet pile 1 and second steel sheet pile 2 has shallow hole, first steel plate
Rigid connector 4 is also associated between stake 1 and second steel sheet pile 2.The rigid connector 4 is stratified and set on the shallow hole
It is interior.The rigid connector 4 is reinforcing bar, and the reinforcement welding connects first steel sheet pile 1 and second steel sheet pile 2.It is logical
The combination that double steel sheet pile is connected with rigid connector 4 is crossed, the larger supporting construction of whole bending stiffness is formed, gives full play to
Steel sheet pile water-stagnating effect is good and constructs the characteristics of quick.
Preferably, after the connection that above-mentioned rigid connector 4 is completed in the shallow hole is set, with easy compacted fill 7 to shallow
Hole is backfilled.Easy compacted fill 7 is backfilled, the soil pressure in horizontal direction after foundation pit 8 excavates can be reduced, excavated in foundation pit 8
Afterwards, the lateral displacement of foundation pit 8 can be reduced, reduce the risk in 8 digging process of foundation pit.
The construction method of a kind of reinforced double steel sheet piling pit supporting construction as shown in Figure 9, based on described above
Supporting construction includes the following steps：
S1, grade, the arch mixing pile 3 of constructing, and the arch for passing through the arch mixing pile 3 shares to extend enough
Form arch churned pile wall；
S2, construct first steel sheet pile 1 and second steel sheet pile 2, and take out drop first steel sheet pile 1 and described the
The level of ground water of two steel sheet piles, the 2 intermediate soil body is to stake bottom；Actively take out the underground water for dropping soil layer in the middle part of double steel sheet pile supporting construction
Position, by lowering of watertable, so as to reduce the lateral Water And Earth Pressures for being applied to double steel sheet pile supporting construction, improves foundation pit
8 stability reduces the risk of 8 unstability of foundation pit.
S3, shallow hole is excavated between first steel sheet pile 1 and second steel sheet pile 2, and is set in the shallow hole
Multilayer rigid connector 4 is to connect first steel sheet pile 1 and second steel sheet pile 2；
At S4, the backfill shallow hole to stake top absolute altitude, excavation pit 8；
First steel sheet pile 1 and second steel sheet pile 2 are transferred to after the completion of S5, foundation pit 8.Make full use of steel sheet pile that can return
The advantages of utilizing is received, reduces supporting construction in the remaining situation in underground, improves utilization rate and economy.
Preferably, when carrying out above-mentioned steps S2, by first steel sheet pile 1 and second steel sheet pile 2 in longitudinal direction
On be set as being mutually parallel, and the parallel spacing in level is set as 2-4 meters.
Preferably, when carrying out above-mentioned steps S3, the cutting depth of the shallow hole is set as 2-4 meters, in the shallow hole
After the interior connection for completing the rigid connector 4, the shallow hole is backfilled with easy compacted fill 7, and using layered rolling
Mode backfilled.
Preferably, the rigid connector 4 is is welded between first steel sheet pile 1 and second steel sheet pile 2
Reinforcing bar, the layering spacing of the reinforcing bar is set as 0.5-1 meters, therefore can be in described shallow four layers of reinforcing bar of bell hole weld, to increase
The bonding strength and equilibrium degree of wall rigid connector 4 and double steel sheet pile.
As a preferred embodiment, the double steel sheet pile in this programme is interlocked using trapezoidal steel plate and is combined into, described trapezoidal
Two foot of steel plate is both provided with lock 5, is rotated by the lock 5 at the left foot end of one block of trapezoidal steel plate with another piece of 180 ° of process
The lock 5 at the right crus of diaphragm end of trapezoidal steel plate carries out fastening overlap joint, and carries out extending according to this being overlapped to form single steel sheet pile.Wherein, it is described
Rigid connector 4 also can be used I-steel and be welded, and double steel sheet pile is rigidly connected into a stress entirety, the I-shaped
One end of steel is welded with first steel sheet pile 1, and the other end is welded with second steel sheet pile 2, the rigid connector 4
Pad 6 with the double steel sheet pile is preferably provided at the arch of the arch mixing pile 3 on the basis of the first steel sheet pile 1
Foot abuts the opposite side of first steel sheet pile 1, to improve the bending stiffness of double steel sheet pile entirety.
The above described is only a preferred embodiment of the present invention, not make limitation in any form to the present invention, therefore
Every any modification that without departing from technical solution of the present invention content, technical spirit according to the present invention makees above example,
Equivalent variations and modification, in the range of still falling within technical solution of the present invention.
Claims (10)
1. a kind of reinforced double steel sheet piling pit supporting construction, including being oppositely arranged group by the first steel sheet pile and the second steel sheet pile
Into double steel sheet pile, excavation of foundation pit is in the side of the double steel sheet pile, which is characterized in that the double steel sheet pile it is another
Side is provided with several arch mixing piles, and the arch openend of the arch mixing pile is set close to the double steel sheet pile.
2. reinforced double steel sheet piling pit supporting construction according to claim 1, which is characterized in that arch described in each two
Shape mixing pile shares an arch foot, and the double steel sheet pile is abutted by the arch foot.
3. reinforced double steel sheet piling pit supporting construction according to claim 1 or 2, which is characterized in that the arch
Mixing pile includes several cylinder piles, is overarched between the cylinder pile by being mutually twisted overlap joint.
4. reinforced double steel sheet piling pit supporting construction according to claim 1, which is characterized in that first steel plate
Rigid connector is connected between stake and second steel sheet pile.
5. reinforced double steel sheet piling pit supporting construction according to claim 4, which is characterized in that the rigid connection
Part is layered setting from top to bottom.
6. reinforced double steel sheet piling pit supporting construction according to claim 4 or 5, which is characterized in that the rigidity
Connector is reinforcing bar, and the reinforcement welding connects first steel sheet pile and second steel sheet pile.
A kind of 7. construction method of reinforced double steel sheet piling pit supporting construction as described in claim 1, which is characterized in that packet
Include following steps：
S1, the construction arch mixing pile, to form arch churned pile wall；
S2, the double steel sheet pile of arch mixing pile construction is abutted, and takes out the level of ground water of the soil body among the double steel sheet pile of drop extremely
Stake bottom；
S3, shallow hole is excavated between double steel sheet pile, and multilayer rigid connector is set to connect described pair in the shallow hole
Arrange steel sheet pile；
At S4, the backfill shallow hole to stake top absolute altitude, excavation pit；
Double steel sheet pile is transferred to after the completion of S5, foundation pit.
8. construction method according to claim 7, which is characterized in that first steel sheet pile and second steel sheet pile exist
To be arranged in parallel, horizontal distance is set as 2-4 meters for longitudinal direction.
9. construction method according to claim 7, which is characterized in that the rigid connector is is welded on first steel
Reinforcing bar between sheet pile and second steel sheet pile, the layering spacing of the reinforcing bar are set as 0.5-1 meters.
10. construction method according to claim 7, which is characterized in that the cutting depth of the shallow hole is 2-4 meters, described
Shallow hole carries out layered rolling backfill using easy compacted soil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810045614.XA CN108166504A (en) | 2018-01-17 | 2018-01-17 | A kind of reinforced double steel sheet piling pit supporting construction and its construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810045614.XA CN108166504A (en) | 2018-01-17 | 2018-01-17 | A kind of reinforced double steel sheet piling pit supporting construction and its construction method |
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| Publication Number | Publication Date |
|---|---|
| CN108166504A true CN108166504A (en) | 2018-06-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810045614.XA Pending CN108166504A (en) | 2018-01-17 | 2018-01-17 | A kind of reinforced double steel sheet piling pit supporting construction and its construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113136875A (en) * | 2021-04-29 | 2021-07-20 | 江苏科技大学 | Foundation pit supporting structure and construction method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1706546A2 (en) * | 2003-12-15 | 2006-10-04 | The University of Maine Board of Trustees | Sheet piling panels with elongated voids |
| CN202298633U (en) * | 2011-10-20 | 2012-07-04 | 中交第三航务工程勘察设计院有限公司 | Arch root pile isolation piling wall |
| CN102995643A (en) * | 2012-12-06 | 2013-03-27 | 东南大学 | Underground-space steel truss foundation pit supporting structure and construction method thereof |
| CN103290850A (en) * | 2013-06-20 | 2013-09-11 | 江苏城市职业学院 | Arch combination foundation pit retaining and protection system and construction method thereof |
| CN106284296A (en) * | 2016-09-28 | 2017-01-04 | 南京工业大学 | The supporting construction of a kind of double steel sheet pile and construction method thereof |
| CN208072411U (en) * | 2018-01-17 | 2018-11-09 | 广州地铁设计研究院有限公司 | A kind of reinforced double steel sheet piling pit supporting construction |
-
2018
- 2018-01-17 CN CN201810045614.XA patent/CN108166504A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1706546A2 (en) * | 2003-12-15 | 2006-10-04 | The University of Maine Board of Trustees | Sheet piling panels with elongated voids |
| CN202298633U (en) * | 2011-10-20 | 2012-07-04 | 中交第三航务工程勘察设计院有限公司 | Arch root pile isolation piling wall |
| CN102995643A (en) * | 2012-12-06 | 2013-03-27 | 东南大学 | Underground-space steel truss foundation pit supporting structure and construction method thereof |
| CN103290850A (en) * | 2013-06-20 | 2013-09-11 | 江苏城市职业学院 | Arch combination foundation pit retaining and protection system and construction method thereof |
| CN106284296A (en) * | 2016-09-28 | 2017-01-04 | 南京工业大学 | The supporting construction of a kind of double steel sheet pile and construction method thereof |
| CN208072411U (en) * | 2018-01-17 | 2018-11-09 | 广州地铁设计研究院有限公司 | A kind of reinforced double steel sheet piling pit supporting construction |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113136875A (en) * | 2021-04-29 | 2021-07-20 | 江苏科技大学 | Foundation pit supporting structure and construction method thereof |
| CN113136875B (en) * | 2021-04-29 | 2022-03-08 | 江苏科技大学 | Foundation pit supporting structure and construction method thereof |
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