CN114482010B - Anti-collapse device for groove-shaped inserted steel sheet pile and superimposed screen plate and construction method thereof - Google Patents
Anti-collapse device for groove-shaped inserted steel sheet pile and superimposed screen plate and construction method thereof Download PDFInfo
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- CN114482010B CN114482010B CN202210087890.9A CN202210087890A CN114482010B CN 114482010 B CN114482010 B CN 114482010B CN 202210087890 A CN202210087890 A CN 202210087890A CN 114482010 B CN114482010 B CN 114482010B
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- 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
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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
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/02—Restraining of open water
- E02D19/04—Restraining of open water by coffer-dams, e.g. made of sheet piles
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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
-
- 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
- E02D5/08—Locking forms; Edge joints; Pile crossings; Branch pieces
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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)
- Composite Materials (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The invention relates to an anti-collapse device for a groove-shaped inserted steel sheet pile and a superposed screen plate, which comprises a plurality of groove-shaped steel sheet piles, wherein one side of each groove-shaped steel sheet pile is provided with a U-shaped guide rail or a locking notch, and adjacent groove-shaped steel sheet piles are spliced and connected through the locking notch of the steel sheet pile or the screen plate of a filtering material is arranged in the U-shaped guide rail between the adjacent groove-shaped steel sheet piles. Compared with the prior art, the invention is used for plugging the water burst on the side wall of the foundation pit in double-diaphragm wall construction, realizes the quick plugging of the problem of the collapse of the groove wall by using the slotted steel sheet pile, the lapped sieve plate with the sieve holes and the lifting device of the filter material of the inner plug, and has great significance for improving the automation degree of the problem of the instability of the groove wall caused by the infiltration of the underground water in the double-diaphragm wall construction, reducing the time and the cost and ensuring the construction safety of double-diaphragm wall engineering.
Description
Technical Field
The invention belongs to the technical fields of foundation pit engineering, underground building engineering and disaster prevention engineering, and particularly relates to a collapse prevention device of a groove-shaped inserted steel sheet pile and a superposed screen plate and a construction method thereof.
Background
In site construction of underground works, it is sometimes necessary to construct double underground continuous walls at close intervals. In addition, due to the existing site and environmental restrictions, the double underground continuous walls are not only closely spaced, but also are required to be constructed simultaneously. In this process, slump often occurs due to the adverse effects of mud guard. Sometimes even collapse to the ground surface, resulting in serious consequences such as delay of construction progress, economic loss and the like. At this time, due to the existence of the existing underground structure at the periphery and the like, the water cannot be treated in a precipitation manner; meanwhile, due to the restrictions of construction sites and construction periods, the problem of wall collapse cannot be solved rapidly by adopting a grouting method. It is therefore necessary to design a set of devices that achieve this.
Disclosure of Invention
The invention aims to solve the problems and provide a double-diaphragm wall collapse prevention device of a groove-shaped inserted steel sheet pile and a superposed screen plate.
The aim of the invention is achieved by the following technical scheme:
the device comprises a plurality of groove-shaped steel sheet piles, wherein one side of each groove-shaped steel sheet pile is provided with a U-shaped guide rail or a locking notch, and adjacent groove-shaped steel sheet piles are spliced and connected through the locking notch of the steel sheet pile or the U-shaped guide rail between the adjacent groove-shaped steel sheet piles is internally provided with a sieve plate made of filter materials.
Further, with U-shaped guide rail homonymy, U-shaped guide rail be equipped with the buckle groove, through the bolt that passes the buckle groove, the sieve with U-shaped guide rail is fixed.
Further, one side of the groove-shaped steel sheet pile is a U-shaped guide rail, one side of the groove-shaped steel sheet pile is a locking notch, or both sides of the groove-shaped steel sheet pile are U-shaped guide rails, different types of steel sheet piles are arranged according to different working conditions, the steel sheet piles with both sides being the U-shaped guide rails are arranged in a partial collapse mode, the steel sheet piles with one side being the U-shaped guide rails are arranged in an integral collapse mode, and the purpose of the steel sheet piles is to form a cofferdam at the position where instability of a groove wall is possibly caused by groundwater infiltration damage, so that soil is supported in the construction process of a ground wall, and the steel sheet piles are pulled out before initial setting of concrete.
Furthermore, the locking notch is hook-shaped, and the locking notch can be freely combined in the same direction to form a continuous and compact water-retaining steel structure body.
Further, the screen plate is a prefabricated steel plate full of uniform pores, when the sign of seepage damage occurs, the screen plate and steel sheet piles on two sides can prevent the wall collapse and simultaneously drain underground water through the screen holes, so that the pressure of the underground water is reduced.
Further, the filter material is mainly coarse sand in natural or artificial stones in the sieve holes, so that the underground water is ensured to flow out smoothly, and soil bodies such as silt are prevented from seeping out from the sieve holes.
A construction method of a collapse prevention device of a groove-shaped inserted steel sheet pile and a superposed screen plate comprises the following steps:
under the condition that seepage damage collapse or seepage damage collapse occurs, reserving slotted holes before constructing a guide wall, pressing slotted steel sheet piles into the outer side of the guide wall by using a digging machine before construction, and combining a plurality of pile bodies by using locking openings of the steel sheet piles if the area of the collapsed soil body is large to form a cofferdam supporting soil body; if the local collapse occurs, arranging steel sheet piles with U-shaped guide rails at two sides;
after the earth wall excavation construction is started, when the seepage damage sign appears, the sieve plate is lifted by using a crane, the sieve plate is inserted along the U-shaped guide rail at one side of the steel sheet pile and is placed nearby a collapse point, the sieve plate is fixed by using a clamping groove and a bolt, the earth wall excavation is continued, the sieve plate is lowered along with the sieve plate, the sieve plate is fixed after the sieve plate is placed at a set position until the sieve plate is excavated to the pit bottom, in the process, groundwater is discharged through sieve holes, the groundwater pressure is reduced, an inner plug filter material prevents silt soil from exuding, after the collapse problem is solved rapidly, a reinforcement cage is placed, concrete is poured, the sieve plate and the steel sheet pile are lifted by using the crane and an excavator vibratory hammer before initial setting of the concrete, and the sieve plate is placed at an open place for standby.
The invention provides a double-diaphragm wall collapse preventing device of a groove-shaped inserted steel sheet pile and a superposed screen plate, wherein the steel sheet pile is pressed in by utilizing an excavator vibrating hammer at a position where collapse is likely to occur to form a cofferdam supporting soil body, when seepage damage signs occur, the screen plate is lowered by utilizing the device, the height is continuously reduced in the construction process, underground water is discharged, meanwhile, the screen plate is lifted after the construction is completed, the steel sheet pile is pulled out, the problem of wall collapse caused by the seepage damage effect of the underground water can be rapidly solved for subsequent standby, and the construction progress is ensured. Meanwhile, the automation degree for solving the problem of groove wall collapse in double-underground continuous wall construction is improved, the time and the cost are reduced, and the method has great significance for guaranteeing the construction safety of double-underground continuous wall engineering.
Compared with the prior art, the invention has the following beneficial effects:
the invention is used for plugging water burst on the side wall of the foundation pit in double-diaphragm wall construction, realizes quick plugging of the problem of collapse of the groove wall by using the groove-shaped steel sheet piles, the lapped sieve plates with the sieve holes and the inner plug filter materials and the lifting device, and has great significance for improving the automation degree of the problem of instability of the groove wall caused by groundwater infiltration in double-diaphragm wall construction, reducing time and cost and ensuring the construction safety of double-diaphragm wall engineering.
Drawings
FIG. 1 is a schematic side view of the device structure of the present invention;
FIG. 2 is a schematic cross-sectional view of the device of the present invention;
FIG. 3 is a plan view of the device of the present invention (single double sided);
FIG. 4 is a plan view of the apparatus of the present invention (row pile single side);
FIG. 5 is a workflow diagram of the present invention;
reference numerals: 1-groove-shaped steel sheet piles; 2-locking; 3-sieve plates; 4-a filter material; 5-crane; 6-an excavator vibratory hammer; 7-a buckling groove; 8-U-shaped guide rails; 9-a bolt; 10-floor wall groove.
Detailed Description
The invention will now be described in detail with reference to the drawings and specific examples.
As shown in fig. 1 and 2, the device comprises a groove-type steel sheet pile 1 with a clamping groove 7 and a U-shaped guide rail 8, a lapped sieve plate 3 with sieve holes and inner plugs of filter material 4 and a lifting device. The groove-type steel sheet pile 1 with the buckling groove 7 and the U-shaped guide rail 8 comprises the buckling groove 7, the U-shaped guide rail 8 and the groove-type steel sheet pile 1; the buckling groove 7 and the U-shaped guide rail 8 are positioned on the same side, and are connected with the sieve plate 3 through bolts 9 to fix the sieve plate 3; the U-shaped guide rail 8 is positioned at one side of the groove-shaped steel sheet pile 1, which needs to be overlapped with the sieve plate 3, so as to facilitate the sieve plate 3 to descend to a designated position along the track; the groove-shaped steel sheet pile 1 is a steel structure body with a groove-shaped section and locking openings 2 at the edges, wherein the locking openings 2 are arranged in the same direction and can be freely combined to form a continuous tight water retaining structure body. The lapped sieve plate 3 with the inner plug filter material 4 is added in the sieve holes, and comprises the inner plug filter material 4 and the lapped sieve plate 3; the lap-jointed screen plate 3 is a prefabricated steel plate full of uniform pores, can be in seamless lap joint with steel sheet piles at two sides, and can prevent the wall collapse of the trough and discharge underground water through the screen holes together with the steel sheet piles at two sides when the sign of seepage damage occurs, so that the pressure of the underground water is reduced; the inner plug filter material 4 is mainly coarse sand in natural or artificial stones, and prevents soil such as silt from exuding from the sieve holes while ensuring that groundwater flows out smoothly. The hoisting device comprises a crane 5 and an excavator vibratory hammer 6; the crane 5 has the functions that before construction, the groove-shaped steel sheet pile 1 and the lapped screen plate 3 with the filter material 4 with the inner plug in the screen holes are lifted up and moved to a designated place to be placed down, the height of the screen plate 3 is lowered at any time in the construction process, and after the construction is completed, the groove-shaped steel sheet pile and the lapped screen plate 3 are moved away and placed in a space for standby; the excavator hammer 6 is used to insert the steel sheet pile into the soil at a position where the collapse of the groove wall may occur, while extracting it after the construction is completed.
As shown in fig. 5, for the double-ground wall constructed at a close distance, slotted holes are reserved before the guide wall is constructed on the ground wall under the condition that seepage damage collapse or seepage damage collapse can occur. Before construction, a groove type steel sheet pile 1 is pressed in the outer side of a ground wall by using a digging machine, if the area of a collapse soil body is large, a plurality of pile bodies are combined by using a steel sheet pile locking port 2, and a cofferdam supporting soil body is formed, as shown in figure 4; if a partial collapse occurs, steel sheet piles are arranged with U-shaped rails 8 on both sides, as shown in fig. 3. After the excavation construction of the ground wall is started, when the seepage damage sign appears, the sieve plate 3 is lifted by the crane 5, inserted along the U-shaped guide rail 8 at one side of the steel sheet pile, lowered near the collapse point, and fixed by the buckling groove 7 and the bolt 9, and the ground wall excavation is continued, and the sieve plate descends along with the collapse point. After the position is established, the sieve plate is fixed until the pit bottom is excavated, in the process, the underground water is discharged through sieve holes, the underground water pressure is reduced, and the inner plug filter material 4 prevents the silt soil from exuding. After the collapse problem is rapidly solved, a reinforcement cage is arranged, concrete is poured, and before the initial setting of the concrete, a crane 5 and an excavator vibratory hammer 6 are utilized to lift the screen plate and the steel sheet pile, and the screen plate and the steel sheet pile are placed in an open place for standby.
The previous description of the embodiments is provided to facilitate a person of ordinary skill in the art in order to make and use the present invention. It will be apparent to those skilled in the art that various modifications can be readily made to these embodiments and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above-described embodiments, and those skilled in the art, based on the present disclosure, should make improvements and modifications without departing from the scope of the present invention.
Claims (3)
1. The construction method of the collapse prevention device of the trough-shaped inserted steel sheet pile and the superposed screen plate is used for blocking water burst on the side wall of the foundation pit in double-floor construction, and is characterized in that the collapse prevention device comprises a plurality of trough-shaped steel sheet piles, one side of each trough-shaped steel sheet pile is provided with a U-shaped guide rail or a locking notch, and adjacent trough-shaped steel sheet piles are spliced and connected through the locking notch of the steel sheet pile, or the screen plate of a filter material is arranged in the U-shaped guide rail between the adjacent trough-shaped steel sheet piles;
the U-shaped guide rail is provided with a clamping groove at the same side as the U-shaped guide rail, and the sieve plate is fixed with the U-shaped guide rail through bolts penetrating through the clamping groove; the screen plate is a steel plate prefabricated with uniform holes, and the filtering material is mainly coarse sand in natural or artificial stones;
the construction method comprises the following steps:
under the condition that seepage damage collapse or seepage damage collapse occurs, reserving slotted holes before constructing a guide wall, pressing slotted steel sheet piles into the outer side of the guide wall by using a digging machine before construction, and combining a plurality of pile bodies by using locking openings of the steel sheet piles if the area of the collapsed soil body is large to form a cofferdam supporting soil body; if the local collapse occurs, arranging steel sheet piles with U-shaped guide rails at two sides;
after the earth wall excavation construction is started, when the seepage damage sign appears, the sieve plate is lifted by using a crane, the sieve plate is inserted along the U-shaped guide rail at one side of the steel sheet pile and is placed nearby a collapse point, the sieve plate is fixed by using a clamping groove and a bolt, the earth wall excavation is continued, the sieve plate is lowered along with the sieve plate, the sieve plate is fixed after the sieve plate is moved down to a designated position until the sieve plate is excavated to the pit bottom, in the process, groundwater is discharged through sieve holes, the groundwater pressure is reduced, an inner plug filter material prevents the silt soil from exuding, after the collapse problem is solved rapidly, a reinforcement cage is placed, concrete is poured, the sieve plate and the steel sheet pile are lifted by using the crane and an excavator vibratory hammer before the initial setting of the concrete, and the sieve plate is placed at an open place for standby.
2. The construction method of the collapse preventing device for the trough-shaped inserted steel sheet piles and the overlapped screen plates according to claim 1, wherein one side of the trough-shaped steel sheet piles is a U-shaped guide rail, one side of the trough-shaped steel sheet piles is a locking notch, or two sides of the trough-shaped steel sheet piles are U-shaped guide rails.
3. The construction method of the collapse preventing device for the trough-shaped inserted steel sheet piles and the overlapped screen plates according to claim 1, wherein the locking openings are hook-shaped, and the locking openings can be freely combined in the same direction to form a steel structure body for continuously and tightly blocking water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210087890.9A CN114482010B (en) | 2022-01-25 | 2022-01-25 | Anti-collapse device for groove-shaped inserted steel sheet pile and superimposed screen plate and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210087890.9A CN114482010B (en) | 2022-01-25 | 2022-01-25 | Anti-collapse device for groove-shaped inserted steel sheet pile and superimposed screen plate and construction method thereof |
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| Publication Number | Publication Date |
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| CN114482010A CN114482010A (en) | 2022-05-13 |
| CN114482010B true CN114482010B (en) | 2023-09-26 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117888527B (en) * | 2024-03-14 | 2024-06-04 | 中国电建集团西北勘测设计研究院有限公司 | Row buckle festival ground strenghthened type steel sheet pile supporting construction and supporting system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207685816U (en) * | 2017-07-20 | 2018-08-03 | 上海汀滢环保科技有限公司 | Pervious ecological shaped steel plate pile |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207685816U (en) * | 2017-07-20 | 2018-08-03 | 上海汀滢环保科技有限公司 | Pervious ecological shaped steel plate pile |
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