CN112726626A - Method for stopping leakage between foundation pit retaining piles - Google Patents
Method for stopping leakage between foundation pit retaining piles Download PDFInfo
- Publication number
- CN112726626A CN112726626A CN202011560904.1A CN202011560904A CN112726626A CN 112726626 A CN112726626 A CN 112726626A CN 202011560904 A CN202011560904 A CN 202011560904A CN 112726626 A CN112726626 A CN 112726626A
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- Prior art keywords
- foundation pit
- fender
- fixing piece
- plugging
- piles
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- 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.)
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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
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/18—Restraining of underground water by damming or interrupting the passage of underground water by making use of sealing aprons, e.g. diaphragms made from bituminous or clay material
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The invention relates to a method for plugging a foundation pit enclosure pile, which comprises the following steps: providing a fixing piece, placing the fixing piece on the bottom surface of the excavated part of the foundation pit, and fixedly connecting the fixing piece with the fender posts on two sides of the leakage part, so that the leakage part is shielded by the fixing piece, and the fixing piece and the soil body between the two fender posts form a pouring space in an enclosing manner; and grouting is performed in the pouring space to block the gap between two adjacent fender posts, so that seeper is prevented from leaking into the foundation pit from the leakage position. The invention effectively solves the problem of difficult plugging of the leakage position between the fender piles, prevents the underground water from flowing into the foundation pit from the gap between the fender piles by plugging the gap between two adjacent fender piles, ensures the construction quality and eliminates the potential safety hazard.
Description
Technical Field
The invention relates to the field of building construction, in particular to a method for stopping leakage among foundation pit retaining piles.
Background
The construction speed of the foundation pit engineering directly determines the construction period of the whole project engineering, the construction quality of the foundation pit enclosure determines the construction speed of the foundation pit engineering, particularly in a stratum with a higher underground water level, if the construction quality of the foundation pit enclosure is not good, water outside the foundation pit enclosure can leak into the foundation pit, the construction period is influenced, and safety accidents can be caused.
The cast-in-situ bored pile is widely applied to foundation pit enclosure, particularly deep foundation pit engineering, in order to stop water, a water-stopping curtain is usually constructed on the outer side of the cast-in-situ bored pile, the water-stopping curtain is generally a row of continuous cement soil mixing piles or high-pressure jet grouting piles, if the construction quality of the water-stopping curtain is not good, underground water outside the foundation pit can leak through inter-pile soil between the cast-in-situ bored piles and enter the foundation pit, the traditional plugging method generally injects plugging materials such as cement paste or polyurethane into soil outside the foundation pit through the inter-pile soil, not only the construction is complex, but also the plugging effect is often not good, the problem of leakage cannot be completely solved, and the safety risk still exists when the foundation pit excavation is continued.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a method for plugging the enclosure piles of the foundation pit, solves the problem of difficulty in plugging the leakage position between the enclosure piles, prevents the underground water from flowing into the foundation pit from the gap between the enclosure piles by plugging the gap between two adjacent enclosure piles, ensures the construction quality and eliminates the potential safety hazard.
The technical scheme for realizing the purpose is as follows:
the invention provides a method for plugging a foundation pit enclosure pile, which comprises the following steps:
providing a fixing piece, placing the fixing piece on the bottom surface of the excavated part of the foundation pit, and fixedly connecting the fixing piece with the fender posts on two sides of the leakage part, so that the leakage part is shielded by the fixing piece, and the fixing piece and the soil body between the two fender posts form a pouring space in an enclosing manner;
and grouting is performed in the pouring space to block the gap between two adjacent fender posts, so that seeper is prevented from leaking into the foundation pit from the leakage position.
The invention provides a method for plugging between foundation pit retaining piles, which comprises the steps of installing fixing pieces between the retaining piles at two sides of a leakage position, further grouting soil between the retaining piles and the fixing pieces, and plugging a gap between the two retaining piles, so that the leakage position between the retaining piles is plugged, accumulated water is prevented from flowing into a foundation pit from the leakage position, the problem that the leakage position between the retaining piles is difficult to plug is solved, and underground water is prevented from flowing into the foundation pit from the gap between the retaining piles by plugging the gap between the two adjacent retaining piles, so that the construction quality is ensured, and potential safety hazards are eliminated.
The method for stopping leakage among the foundation pit retaining piles is further improved in that the retaining piles are cast-in-situ bored piles;
the fixing piece is screwed with the fender post through a bolt.
The method for plugging the space between the foundation pit retaining piles is further improved in that the retaining piles are piles in an SMW construction method;
the mounting passes through magnet and fender pile absorption and is connected.
The method for plugging between the foundation pit retaining piles is further improved in that the method further comprises the following steps:
a plurality of fixing pieces are connected between the fender piles on two sides of the leakage position along with the excavation depth of the foundation pit until the foundation pit is formed, and the fixing pieces are spliced end to form an integral structure, so that a gap between the two fender piles is blocked.
The method for plugging the foundation pit support piles is further improved in that the top part of the fixing piece protrudes upwards to form a boss, and the bottom part of the fixing piece is sunken to form a groove matched with the boss;
the boss of one fixing piece is clamped in the groove of the other fixing piece, so that the two adjacent fixing pieces are connected end to end.
The method for plugging between the foundation pit retaining piles is further improved in that the fixing piece is a steel plate.
The method for plugging the foundation pit enclosure piles is further improved in that the cross section of the fixing piece is U-shaped and comprises two side plates which are oppositely arranged and a connecting plate which is connected to one end of each side plate;
the side plates are fixedly connected with the corresponding fender piles, so that a pouring space is formed by enclosing the fixing piece and the soil body between the two fender piles, and then grouting is performed in the pouring space to plug a gap between the two fender piles.
The method for stopping leakage between the foundation pit retaining piles is further improved in that a water stop bar is fixedly arranged at the position of the fixing piece corresponding to the retaining pile;
and mounting the fixing piece on the fender pile, so that the water stop strip is propped against the fender pile, and a gap between the fixing piece and the fender pile is filled.
The method for plugging between the foundation pit retaining piles is further improved in that the fixing piece is provided with a grouting hole and an exhaust hole, and the grouting hole is positioned below the exhaust hole;
through the slip casting hole to slip casting in the grouting space, and gaseous can outwards be discharged from the exhaust hole, when the thick liquid flows from the exhaust hole, stops the slip casting to shutoff slip casting hole and exhaust hole.
The method for plugging between the foundation pit retaining piles is further improved in that the grout injected into the grouting space is quick-hardening cement paste or polyurethane.
Drawings
Fig. 1 is a top view of an embodiment of the method for plugging between foundation pit support piles according to the present invention.
Fig. 2 is a front view of fig. 1.
Fig. 3 is a perspective view of the fastener portion of fig. 2.
Fig. 4 is a top view of the fastener portion of fig. 2.
Fig. 5 is a side cross-sectional view of the fastener portion of fig. 2.
Fig. 6 is a top view of another embodiment of the method for plugging between foundation pit fenders according to the present invention.
Fig. 7 is a perspective view of the anchor portion of fig. 6.
Fig. 8 is a top view of the fastener portion of fig. 6.
Fig. 9 is a side cross-sectional view of the fastener portion of fig. 6.
Fig. 10 is a top view of another embodiment of the method for plugging between foundation pit fenders according to the present invention.
Fig. 11 is a front view of fig. 10.
Fig. 12 is a perspective view of the anchor portion of fig. 10.
Fig. 13 is a top view of the fastener portion of fig. 10.
Fig. 14 is a side cross-sectional view of the anchor portion of fig. 10.
Fig. 15 is a top view of another embodiment of the method for plugging between foundation pit fenders according to the present invention.
Fig. 16 is a perspective view of the anchor portion of fig. 15.
Fig. 17 is a top view of the anchor portion of fig. 15.
Fig. 18 is a side cross-sectional view of the anchor portion of fig. 15.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
The invention provides a method for plugging between enclosure piles of a foundation pit, which comprises the steps of installing fixing pieces between the enclosure piles at two sides of a leakage position, further grouting soil between the enclosure piles and the fixing pieces to plug a gap between the two enclosure piles, thus plugging the leakage position between the enclosure piles, preventing accumulated water from flowing into the foundation pit from the leakage position, solving the problem of difficulty in plugging the leakage position between the enclosure piles, and plugging the gap between the two adjacent enclosure piles to prevent underground water from flowing into the foundation pit from the gap between the enclosure piles, thereby ensuring the construction quality and eliminating potential safety hazards. The method for plugging between the foundation pit retaining piles of the invention is explained below with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 is a top view of an embodiment of a method for plugging between foundation pit support piles according to the present invention. The method for plugging between the enclosure piles of the foundation pit according to the present invention will be described with reference to fig. 1.
As shown in fig. 1 and 2, the invention provides a method for plugging a foundation pit enclosure pile, which comprises the following steps:
providing a fixing piece 11, placing the fixing piece 11 on the bottom surface of the excavated part of the foundation pit 22, and fixedly connecting the fixing piece 11 with the fender posts 21 on two sides of the leakage part, so that the leakage part is shielded by the fixing piece 11, and the fixing piece 11, the bottom surface of the excavated part and the soil body between the two fender posts 21 enclose to form a pouring space;
grouting is carried out in the pouring space to block the gap between two adjacent fender posts 21, and therefore seeper is prevented from leaking into the foundation pit 22 from the leaking position.
Further, the method also comprises the following steps:
connect a plurality of mounting 11 until forming foundation ditch 22 between the fender pile 21 of leakage department both sides along with the excavation depth of foundation ditch 22, and a plurality of mounting 11 end to end concatenation is a body structure to the clearance between two fender piles 21 of shutoff, install mounting 11 and slip casting while excavating promptly, thereby can not have the ponding seepage during the guarantee excavation.
Specifically, as shown in fig. 5, 9, 14 and 18, the top portion of the fixing member 11 protrudes upwards to form a boss 113, and the bottom portion of the fixing member 11 is recessed to form a groove 114 matching with the boss 113;
the boss 113 of one fixing member 11 is clamped in the groove 114 of the other fixing member 11, so that the two adjacent fixing members 11 are connected end to end, and the connection mode of the boss 113 and the groove 114 can not only fixedly connect the two adjacent fixing members 11, but also form a nonlinear splicing seam to prevent seeper from permeating.
Furthermore, a water stop bar 14 is fixedly arranged at the position of the fixing piece 11 corresponding to the fender post 21;
the fixing 11 is mounted to the fender post 21 so that the water stop strip 14 abuts against the fender post 21, thereby filling the gap between the fixing 11 and the fender post 21.
Specifically, the fixing member 11 is provided with a grouting hole 12 and an exhaust hole 13, and the grouting hole 12 is located below the exhaust hole 13;
grouting into the pouring space through the grouting holes 12, discharging gas from the exhaust holes 13, stopping grouting when grout flows out of the exhaust holes 13, and plugging the grouting holes 12 and the exhaust holes 13.
Preferably, the grout injected into the casting space is quick-hardening cement grout or polyurethane.
As a preferred embodiment of the present invention, as shown in fig. 1 to 5, the fender pile 21 is a cast-in-situ bored pile;
the fixing member 11 is screw-coupled to the fender post 21 by a bolt 15.
Further, this mounting 11 is the steel sheet, and the both sides of steel sheet are fixed with the pterygoid lamina, and the pterygoid lamina has seted up the through-hole, and fender post 21 corresponds the through-hole and has seted up the screw, passes the through-hole and then the screw in the screw through bolt 15 for mounting 11 is fixed in fender post 21.
Preferably, the water stop bar 14 is fixed to the side of the steel plate adjacent to the fender post 21.
As another preferred embodiment of the present invention, as shown in fig. 6 to 9, the fender pile 21 is a cast-in-situ bored pile;
the fixing member 11 is screw-coupled to the fender post 21 by a bolt 15.
Further, the cross section of the fixing member 11 is U-shaped, and includes two side plates 111 disposed oppositely and a connecting plate 112 connected to corresponding ends of the two side plates 111, and the grouting holes 12 and the exhaust holes 13 are opened in the connecting plate 112;
the side plates 111 are fixedly connected with the corresponding fender piles 21, so that a pouring space is formed by enclosing soil between the fixing piece 11 and the two fender piles 21, grouting is performed in the pouring space, and gaps between the two fender piles 21 are blocked, namely, the structure can increase the pouring range, so that the fender structure can be further strengthened, and the anti-seepage effect is better.
Preferably, the water stop 14 is fixed to the end of the side plate 111.
Preferably, a wing plate is fixed to a side portion of the side plate 111, and the wing plate is fixedly connected to the fender post 21 by a bolt 15.
As another preferred embodiment of the present invention, as shown in fig. 10 to 14, the fender pile 21 is a SMW pile;
the fixing member 11 is attached to the fender post 21 by attraction with the magnet 16.
Further, the fixing member 11 is a steel plate, and magnets 16 are fixedly disposed on two sides of the steel plate to be attached to the fender posts 21.
Preferably, the magnet 16 is provided with a switch, which is similar in principle to a magnet gauge stand, and by turning on the switch, the magnet 16 has a strong magnetic force, and by turning off the switch, the magnetic force of the magnet 16 is weakened, thereby enabling the position of the adjustment fixing member 11 to be moved.
Preferably, the water stop bar 14 is fixed to the side of the steel plate adjacent to the fender post 21.
In another preferred embodiment of the present invention, as shown in fig. 15 to 18, the fender pile 21 is a SMW pile;
the fixing member is attracted to the fender post 21 by the magnet 16.
Further, the cross section of the fixing member 11 is U-shaped, and includes two side plates 111 disposed oppositely and a connecting plate 112 connected to corresponding ends of the two side plates 111, and the grouting holes 12 and the exhaust holes 13 are opened in the connecting plate 112;
the side plates 111 are fixedly connected with the corresponding fender piles 21, so that a pouring space is formed by enclosing soil between the fixing piece 11 and the two fender piles 21, grouting is performed in the pouring space, and gaps between the two fender piles 21 are blocked, namely, the structure can increase the pouring range, so that the fender structure can be further strengthened, and the anti-seepage effect is better.
Preferably, the water stop 14 is fixed to the end of the side plate 111.
Preferably, the magnets 16 are fixed to the side portions of the side plates 111, and the fixing members 11 are fixedly connected to the fender posts 21 through the magnets 16.
The specific embodiment of the invention is as follows:
when the fender pile 21 is a bored pile, the fixing piece 11 is fixed to the fender pile 21 by using the bolt 15, the fixing piece 11 can be a steel plate or a structure with a U-shaped cross section, the selection can be carried out according to the leakage condition and the actual construction condition, the fixing piece 11 is installed and grouted along the excavation depth of the foundation pit 22 until the excavation of the foundation pit 22 is completed, and at the moment, a plurality of fixing pieces 11 which are connected end to end are installed along the height direction of the fender pile 21 to form an integrated structure, so that the gap between the two fender piles 21 is blocked, and the seeper leakage is prevented;
when the fender pile 21 is a pile of the SMW construction method, the fixing member is fixed to the fender pile 21 by using the magnet 16, the fixing member 11 may be a steel plate or a structure having a U-shaped cross section, which can be selected according to the leakage condition and the actual construction condition, the fixing member 11 is installed and grouting is performed along the excavation depth of the foundation pit 22 until the excavation of the foundation pit 22 is completed, and at this time, a plurality of fixing members 11 connected end to end are installed along the height direction of the fender pile 21 to form an integral structure, thereby blocking the gap between the two fender piles 21 and preventing seeper leakage.
While the present invention has been described in detail and with reference to the embodiments thereof as illustrated in the accompanying drawings, it will be apparent to one skilled in the art that various changes and modifications can be made therein. Therefore, certain details of the embodiments are not to be interpreted as limiting, and the scope of the invention is to be determined by the appended claims.
Claims (10)
1. A method for plugging foundation pit support piles is characterized by comprising the following steps:
providing a fixing piece, placing the fixing piece on the bottom surface of the excavated part of the foundation pit, and fixedly connecting the fixing piece with the fender posts on two sides of the leakage position, so that the leakage position is shielded by the fixing piece, and the fixing piece and the soil body between the two fender posts form a pouring space in an enclosing manner;
and grouting the pouring space to block the gap between every two adjacent fender posts, so that seeper is prevented from leaking into the foundation pit from the leakage position.
2. The method for plugging a foundation pit enclosure pile according to claim 1, wherein the enclosure pile is a cast-in-place bored pile;
the fixing piece is connected with the fender post in a screwing mode through a bolt.
3. The method for plugging a foundation pit enclosure pile according to claim 1, wherein the enclosure pile is an SMW construction method pile;
the fixing piece is connected with the fender post in an adsorption mode through a magnet.
4. The method for plugging a foundation pit enclosure pile according to claim 1, further comprising:
the fixing pieces are connected between the fender piles at two sides of the leakage position along with the excavation depth of the foundation pit until the foundation pit is formed, and the fixing pieces are spliced end to form an integral structure, so that gaps between the fender piles are sealed.
5. The method for plugging a foundation pit enclosure pile according to claim 4, wherein the top part of the fixing member protrudes upwards to form a boss, and the bottom part of the fixing member is recessed to form a groove matched with the boss;
and clamping the boss of one fixing piece in the groove of the other fixing piece, so that the two adjacent fixing pieces are connected end to end.
6. The method for plugging a foundation pit enclosure pile according to claim 1, wherein the fixing member is a steel plate.
7. The method for plugging a foundation pit enclosure pile according to claim 1, wherein the fixing member has a U-shaped cross section and includes two side plates disposed opposite to each other and a connecting plate connected to one ends of the two side plates corresponding to each other;
and fixedly connecting the side plates with the corresponding fender piles, so that the fixing piece and the soil body between the two fender piles enclose to form the pouring space, and then grouting is performed in the pouring space to plug the gap between the two fender piles.
8. The method for plugging a foundation pit enclosure pile according to claim 1, wherein a water stop bar is fixedly arranged at a position of the fixing member corresponding to the enclosure pile;
and mounting the fixing piece on the fender post, so that the water stop strip is propped against the fender post, thereby filling the gap between the fixing piece and the fender post.
9. The method for plugging a foundation pit support pile according to claim 1, wherein the fixing member is provided with a grouting hole and an exhaust hole, and the grouting hole is positioned below the exhaust hole;
through the slip casting hole to slip casting in the slip casting space, and gas can follow the exhaust hole outwards discharges, when thick liquid certainly when the exhaust hole flows, stops the slip casting, and the shutoff slip casting hole with the exhaust hole.
10. The method for plugging a foundation pit enclosure pile according to claim 1, wherein the grout injected into the grouting space is quick-hardening cement grout or polyurethane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011560904.1A CN112726626A (en) | 2020-12-25 | 2020-12-25 | Method for stopping leakage between foundation pit retaining piles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011560904.1A CN112726626A (en) | 2020-12-25 | 2020-12-25 | Method for stopping leakage between foundation pit retaining piles |
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| Publication Number | Publication Date |
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| CN112726626A true CN112726626A (en) | 2021-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011560904.1A Pending CN112726626A (en) | 2020-12-25 | 2020-12-25 | Method for stopping leakage between foundation pit retaining piles |
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| CN (1) | CN112726626A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113565149A (en) * | 2021-07-07 | 2021-10-29 | 深圳市中地建设工程有限公司 | Leaking stoppage construction method by external bar planting method between piles |
| CN113882414A (en) * | 2021-10-18 | 2022-01-04 | 中国建筑第五工程局有限公司 | Leaking stoppage slip casting device between deep foundation pit fender pile |
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| KR101463427B1 (en) * | 2014-03-25 | 2014-11-20 | 정택동 | Composite type steel temporary construction and construction method thereof |
| CN207143920U (en) * | 2017-08-15 | 2018-03-27 | 广州中煤江南基础工程公司 | Water-stopping system between novel pile under a kind of complicated circumstance of flowing water |
| CN110485451A (en) * | 2019-09-06 | 2019-11-22 | 广州地铁设计研究院股份有限公司 | The waterproofing and leakage-stopping structure and construction method that cooperation SMW engineering method stake enclosure wall uses |
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| CN102286984A (en) * | 2011-05-25 | 2011-12-21 | 深圳市鸿荣轩建设工程有限公司 | Water-stop curtain and construction method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113565149A (en) * | 2021-07-07 | 2021-10-29 | 深圳市中地建设工程有限公司 | Leaking stoppage construction method by external bar planting method between piles |
| CN113882414A (en) * | 2021-10-18 | 2022-01-04 | 中国建筑第五工程局有限公司 | Leaking stoppage slip casting device between deep foundation pit fender pile |
| CN113882414B (en) * | 2021-10-18 | 2023-01-31 | 中国建筑第五工程局有限公司 | Leaking stoppage slip casting device between deep foundation pit fender pile |
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