CN115233697A - Vertical combined type seepage-proofing and water-stopping curtain structure and construction method - Google Patents
Vertical combined type seepage-proofing and water-stopping curtain structure and construction method Download PDFInfo
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- CN115233697A CN115233697A CN202211016048.2A CN202211016048A CN115233697A CN 115233697 A CN115233697 A CN 115233697A CN 202211016048 A CN202211016048 A CN 202211016048A CN 115233697 A CN115233697 A CN 115233697A
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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
- E02D19/06—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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- 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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Abstract
The invention discloses a vertical combined type seepage-proofing and water-stopping curtain structure and a construction method in the field of foundation pit supporting and waterproofing, wherein the water-stopping curtain structure comprises an upper protection plate, a middle water-stopping curtain pile body and a lower embedded column; the lower end of the embedded column is fixedly provided with embedded claws which are arranged at intervals along the circumferential direction of the embedded column and embedded in the stable waterproof layer; the upper end of the embedded column is sealed in the lower end of the waterproof curtain pile body by cement; the upper end of the waterproof curtain pile body is exposed on the ground surface, the upper end face of the waterproof curtain pile body is provided with an interface groove, and the interface groove is used for installing a protection plate. According to the water seepage curtain structure, the pile body does not need to be driven into the middle weathered layer at the lower part, the pile driving efficiency is high, the abrasion of a drill bit is small, the lower part of the embedded column is embedded into the hole position of the pre-drilled hole by utilizing the hole position reserved by the pre-drilled hole, and then the upper part of the embedded column is sealed in the pile body of the water seepage curtain by cement, so that the purpose of embedding and fixing the water seepage curtain into the stable water resisting layer is achieved, and the construction efficiency of the whole water seepage curtain is improved.
Description
Technical Field
The invention relates to the technical field of foundation pit supporting waterproofing, in particular to a vertical combined type seepage-proofing and water-stopping curtain structure and a construction method.
Background
The waterproof curtain is a general term for stopping water engineering in excavation engineering, and the engineering significance lies in preventing or reducing infiltration of groundwater in a foundation pit so as to ensure construction safety and prevent settlement of a house after the waterproof curtain is put into use.
Generally, when the waterproof curtain of the deep foundation pit is constructed, the waterproof curtain needs to be embedded into a stable waterproof layer to form a closed structure, and water layer communication inside and outside the foundation pit is blocked, but the stable waterproof layer is generally a medium-hardness layer, the permeability coefficient of the stable waterproof layer is small, but the hardness is high, the piling efficiency is low when the waterproof curtain is constructed and piled, the abrasion of a drill bit is large, the drill bit needs to be replaced temporarily, and the construction efficiency is seriously influenced. In addition, before the waterproof curtain construction and piling, pre-detection holes are usually drilled to find the distribution condition of an underground soil layer, and an engineer is helped to analyze whether the holes are suitable for drilling, wherein the pre-detection holes are usually drilled to reach at least 1m of final holes below the wind formation layer.
Disclosure of Invention
The invention provides a vertical combined type seepage-proofing and water-stopping curtain structure and a construction method, wherein the water-seepage curtain structure only needs to punch the depth of a pile hole of a water-stopping curtain to the junction of a middle strong weathering layer and a lower middle weathering layer without being punched into the lower middle weathering layer, because the hardness of an upper sand layer and the middle strong weathering layer is lower, the pile-driving efficiency is high, the abrasion of a drill bit is small, then the lower part of an embedded column is embedded into a hole position of a pre-detection hole by utilizing the hole position reserved by the pre-detection hole, and then the upper part of the embedded column is sealed in the water-stopping curtain pile body by using cement, so that the aim of embedding the water-stopping curtain into a stable water-resisting layer is fulfilled. Compared with the common waterproof curtain mechanism, the waterproof curtain mechanism reduces the construction depth of the part of the waterproof curtain pile body which is difficult to construct, stabilizes the hole position when the soil property is explored by using the pre-exploring hole, and improves the construction efficiency of the whole waterproof curtain.
In order to achieve the purpose, the invention provides the following technical scheme: a vertical combined type seepage-proofing and water-stopping curtain structure comprises an upper protection plate, a middle water-stopping curtain pile body and a lower embedded column; the lower end of the embedded column is fixedly provided with embedded claws which are arranged at intervals along the circumferential direction of the embedded column and embedded in the stable waterproof layer; the upper end of the embedded column is sealed in the lower end of the waterproof curtain pile body by cement;
the waterproof curtain pile is characterized in that the upper end of the waterproof curtain pile is exposed on the ground surface, an interface groove is formed in the upper end surface of the waterproof curtain pile, and the interface groove is used for installing a protection plate.
As a further aspect of the invention, the length of the inlay claw is at least 1.0 meter.
As a further scheme of the invention, the lower end of the protection plate is provided with a mounting seat which is slidably mounted in the interface slot; and splicing plates are fixedly arranged on the left side and the right side of the upper end of the protection plate respectively, and are used for being spliced with the splicing plates on the other protection plate.
As a further scheme of the invention, the interface slot is a work-port slot.
As a further scheme of the invention, a horizontally arranged water outlet is formed in one side, away from the foundation pit, of the waterproof curtain pile body, and is communicated with the bottom of the interface groove, and the water outlet is used for discharging water in the interface groove.
As a further scheme of the invention, one side of the waterproof curtain pile body, which is close to a foundation pit, is provided with a horizontally arranged plug hole, the plug hole is communicated with the bottom of the interface groove, a pin column is horizontally and slidably arranged in the plug hole in a sliding manner, and a pin hole is formed in the mounting seat; when the pin hole is aligned with the plug hole, the pin hole is also aligned with the drain hole.
As a further scheme of the invention, a sliding track is vertically arranged on one side of the protection plate close to the foundation pit, and a support seat is arranged in the sliding track in a sliding manner; a sliding seat is horizontally and movably arranged on the upper end surface of the waterproof curtain pile body, and the sliding seat is hinged with the supporting seat through a hinge rod; a first sliding column and a second sliding column are respectively and fixedly mounted on one side of the sliding seat close to the foundation pit and one side of the pin column close to the foundation pit; the first sliding column and the second sliding column are respectively installed in the first sliding groove and the second sliding groove in a sliding mode; the first sliding groove and the second sliding groove are respectively formed in the upper end and the lower end of the rotating rod; the dwang rotates to be installed on the waterproof curtain pile body, the dwang with be provided with the torsional spring between the waterproof curtain pile body.
The invention also provides a construction method of the vertical combined type impervious waterproof curtain, which comprises the impervious waterproof curtain of at least one of the claims 1 to 7, and is characterized in that: the method mainly comprises the following steps:
s1: paying off, positioning and grooving;
s2: pre-probing hole construction, namely laying pre-probing holes along the axis of a foundation pit, wherein the pitch of the pre-probing holes is the same as the pile pitch of a water curtain pile body in subsequent construction, the aperture of the pre-probing holes is the same as the size of the embedding claws, the depth of a stable water-resisting layer is probed by the pre-probing holes, and the pre-probing holes enter final holes at least 1 meter below the stable water-resisting layer;
s3: the method comprises the following steps that a stirring drilling machine is in place, three-axis stirring pile construction is carried out, the driving depth of the three-axis stirring pile is up to the depth of a stable water-resisting layer, and the burial depth position of the bottom of the three-axis stirring pile is recorded;
s4: draining and discharging slurry of the triaxial mixing pile;
s5: placing the embedded column to the bottom of the triaxial mixing pile, and embedding the embedded claw into the pre-drilled hole; when the step is carried out, the reinforcement cages can be placed at intervals according to actual requirements, and the strength of the waterproof curtain pile body is enhanced
S6: arranging a guniting guide pipe for guniting so that the embedded column is sealed in the cement column by cement; a waterproof curtain pile body after the waterproof curtain pile body is solidified;
s7: and (4) splicing and installing a protection plate at the top end of the waterproof curtain pile body.
Compared with the prior art, the invention has the beneficial effects that:
1. the water seepage curtain structure only needs to punch the depth of a waterproof curtain pile hole to the junction of the middle strong weathering layer and the middle weathering layer without punching into the middle weathering layer at the lower part, the sand layer at the upper part and the strong weathering layer at the middle part have lower hardness, so the pile driving efficiency is high, the abrasion of a drill bit is small, then the lower part of the embedded column is embedded into the hole position of the pre-detection hole by utilizing the hole position reserved by the pre-detection hole, and then the upper part of the embedded column is sealed in the water seepage curtain pile body by cement, so the aim of embedding and fixing the waterproof curtain into the stable waterproof layer is fulfilled. Compared with the common waterproof curtain mechanism, the waterproof curtain mechanism reduces the construction depth of the part of the waterproof curtain pile body which is difficult to construct, stabilizes the hole position when the soil property is explored by using the pre-exploring hole, and improves the construction efficiency of the whole waterproof curtain.
2. According to the waterproof curtain, the interface slot is directly formed in the upper end of the waterproof curtain pile body, so that a protection plate is convenient to install; the invention is provided with the protection plates which are spliced with each other to form the protection plate with any length, thereby meeting the protection requirements of foundation pits with different edge lengths and being convenient to install.
3. The invention also provides a supporting seat at one side of the protection plate close to the foundation pit, so as to provide supporting force for the protection plate. When the guard plate receives the power of horizontal direction, the drive supporting seat upwards slides relative to the slip track for the strong point of supporting seat moves up relative to the guard plate, improves the holding power to the guard plate. When the pin column is used for fixing the protection plate at the beginning, the pin column is not completely inserted into the pin hole, so that the pin column is prevented from blocking a drainage channel of the drainage hole. When the guard plate receives horizontally pressure, the pressure drive round pin post when utilizing the guard plate to empty passes the pinhole on the mount pad, inserts in the wash port, not only clears up the wash port, can also make the location of round pin capital mount pad more stable, and the help guard plate maintains vertical state.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of an overall structure of a vertically assembled impervious waterproof curtain structure according to the present invention;
FIG. 2 is a schematic structural view of a waterproof curtain structure in a half-section;
FIG. 3 is an enlarged view of a portion A of FIG. 2 according to the present invention;
FIG. 4 is a schematic view of the structure of the fender panel of the present invention;
FIG. 5 is a schematic view of the construction of the stud of the present invention;
FIG. 6 is a schematic structural view of the upper end face of the waterproof curtain pile body of the present invention;
FIG. 7 is a schematic view of a pre-drilled hole according to the present invention;
FIG. 8 is a process flow chart of the construction method of the vertically combined impervious waterproof curtain structure of the invention.
In the drawings, the components represented by the respective reference numerals are listed below:
11-protection plate, 12-waterproof curtain pile body, 13-embedded column, 14-embedded claw, 15-interface groove, 16-installation seat, 17-splice plate, 18-pre-probing hole, 21-water outlet, 22-plug hole, 23-pin column, 24-pin hole, 31-sliding track, 32-support seat, 33-sliding seat, 34-hinge rod, 35-first sliding column, 36-second sliding column, 37-first sliding groove, 38-second sliding groove, 39-rotating rod and 40-torsion spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-8, the present invention provides a vertically assembled impervious waterproof curtain structure, which comprises an upper protection plate 11, a middle waterproof curtain pile 12 and a lower embedded column 13; the lower end of the embedded column 13 is fixedly provided with embedded claws 14, and the embedded claws 14 are arranged at intervals along the circumferential direction of the embedded column 13 and embedded in a stable waterproof layer; the upper end of the embedded column 13 is sealed in the lower end of the waterproof curtain pile body 12 by cement;
the upper end of the waterproof curtain pile body 12 is exposed on the ground surface, the upper end surface of the waterproof curtain pile body 12 is provided with a connector slot 15, and the connector slot 15 is used for installing the protection plate 11.
Generally, when the waterproof curtain of the deep foundation pit is constructed, the waterproof curtain needs to be embedded into a stable waterproof layer to form a closed structure, and water layer communication inside and outside the foundation pit is blocked, but the stable waterproof layer is generally a medium-hardness layer, the permeability coefficient of the stable waterproof layer is small, but the hardness is high, the piling efficiency is low when the waterproof curtain is constructed and piled, the abrasion of a drill bit is large, the drill bit needs to be replaced temporarily, and the construction efficiency is seriously influenced. The invention provides a novel vertical combined waterproof curtain structure, as shown in figure 2, the waterproof curtain mainly comprises an upper protection plate 11, wherein the protection plate 11 is arranged on a waterproof curtain pile body 12 and is used for retaining soil and water and preventing water on the ground surface from directly flowing into a foundation pit.
The waterproof curtain pile comprises a waterproof curtain pile body 12 in the middle, wherein the upper end of the waterproof curtain pile body 12 is exposed on the earth surface, the middle vertically penetrates through a sand layer on the upper portion of the underground layer and a strongly weathered layer in the middle, and the lower portion reaches the junction of the strongly weathered layer in the middle of the underground layer and the strongly weathered layer in the lower portion of the underground layer. The sand layer mainly comprising silt and medium-coarse sand is arranged on the upper part of the underground layer, and a large amount of coral reef scraps and coral reef limestone are locally contained, so that the permeability coefficient is high, and water seepage is easy; the hardness of the strongly weathered layer in the middle of the underground layer is smaller than that of the strongly weathered layer in the lower part, but the permeability coefficient is larger, and water is easy to seep; the middle weathered layer at the lower part of the underground layer has small permeability coefficient and can be regarded as a stable water-resisting layer, but the hardness is higher, and the drilling and piling are difficult. The waterproof curtain pile body 12 can isolate the water seepage of a sand layer at the upper part of the underground layer and a strong weathering layer at the middle part of the underground layer, and the middle weathering layer at the lower part of the underground layer is a stable waterproof layer, so that the waterproof curtain pile body 12 can fulfill the aims of preventing the underground water from seepage and stopping the underground water of the foundation pit.
Including the lower embedded columns 13. The waterproof curtain pile body 12 is long, and the waterproof curtain is likely to be unstable wholly underground, so that the waterproof curtain can be failed wholly. Therefore, the lower end of the waterproof curtain pile body 12 is provided with the embedded columns 13, as shown in fig. 5, the lower ends of the embedded columns 13 are circumferentially provided with embedded claws 14 at intervals, the embedded claws 14 are embedded on the middle buried layer at the lower part of the underground layer, the embedding depth is at least 1m, and the upper ends are fixedly connected with the pile body of the waterproof curtain pile body 12. The fixed connection mode adopted by the invention is that the upper end of the embedded column 13 is directly sealed at the lower end of the waterproof curtain pile body 12 by cement, so that the waterproof curtain pile body 12 can be directly embedded into a stable waterproof layer, namely a hydration layer in the lower part of an underground layer, through the embedded column 13.
In order to make the installation convenient, as shown in fig. 6 and 4, an interface slot 15 for installing the protection plate 11 is directly opened at the upper end of the waterproof curtain pile body 12. Since the waterproof curtain pile body 12 of the present invention is integrally formed by cement, the present invention only needs to install a mold corresponding to the shape of the mouth piece groove 15 at the upper end of the waterproof curtain pile body 12, and the mouth piece groove 15 is also integrally formed when the waterproof curtain pile body 12 is solidified by cement.
As a further aspect of the invention, the length of the mounting jaw 14 is at least 1.0 meter. The purpose of this arrangement is to cause the inlay claw 14 to fill the drill hole. The material of the embedded claw 14 can be made of expansion material for water prevention, so that the groundwater is prevented from penetrating through the waterproof curtain through the pre-probing hole 18 and entering the foundation pit.
As a further scheme of the present invention, the lower end of the protection plate 11 is provided with a mounting seat 16, and the mounting seat 16 is slidably mounted in the interface slot 15; the left side and the right side of the upper end of the protection plate 11 are respectively fixedly provided with a splice plate 17, and the splice plates 17 are used for being spliced with splice plates 17 on another protection plate 11.
When the protection plate 11 is installed, the installation seat 16 at the bottom of the protection plate 11 is inserted into the interface slot 15. In order to further facilitate the installation of the protection plates 11 and meet the requirements of foundation pits with different edge lengths, the protection plates 11 are further arranged in a splicing manner, as shown in fig. 4, splicing plates 17 are respectively and fixedly arranged on the left side and the right side of the upper end of each protection plate 11, and the protection plates 11 with any length can be combined by means of the mutual overlapping and splicing of the plates on the two adjacent protection plates 11.
The water seepage curtain structure only needs to drive the depth of a waterproof curtain pile hole to the junction of the middle strong weathering layer and the middle weathering layer without driving the waterproof curtain pile hole into the middle weathering layer at the lower part, the pile driving efficiency is high, the abrasion of a drill bit is small, then the lower part of the embedded column is embedded into the hole site of the pre-detection hole by utilizing the hole site reserved by the pre-detection hole, and then the upper cement of the embedded column is sealed in the waterproof curtain pile body, so that the purpose of embedding the waterproof curtain into the stable waterproof layer is realized. Compared with the common waterproof curtain mechanism, the waterproof curtain mechanism reduces the construction depth of the part of the waterproof curtain pile body which is difficult to construct, stabilizes the hole position when exploring the soil property by utilizing the pre-exploring hole, and improves the construction efficiency of the whole waterproof curtain.
As a further aspect of the present invention, the interface slot 15 is a tool slot. As shown in fig. 6, the design of the slot helps to make the protection plate 11 vertical and not prone to toppling, because the protection plate 11 may bear horizontal pressure, such as the pressure of a soil pile, when in use.
As a further scheme of the invention, a horizontally arranged water outlet 21 is formed in one side of the waterproof curtain pile body 12 away from the foundation pit, the water outlet 21 is communicated with the bottom of the interface slot 15, and the water outlet 21 is used for discharging water in the interface slot 15.
As shown in fig. 6, because the interface slot 15 can make the upper end surface of the waterproof curtain retain water, the drainage port 21 provided by the invention can drain the water in the interface slot 15 outwards. Because the mounting seat 16 at the lower part of the protection plate 11 can slide in the interface slot 15, the sealing can be difficult to be completely realized, and water in the interface slot 15 can be accumulated, even the accumulated water in the interface slot 15 can cross the blockage of the protection plate 11 and enter the inner side of the protection plate 11.
As a further scheme of the invention, a horizontally arranged inserting hole 22 is formed in one side of the waterproof curtain pile body 12 close to the foundation pit, the inserting hole 22 is communicated with the bottom of the interface slot 15, a pin column 23 is horizontally slidably mounted in the inserting hole 22 in a sliding manner, and a pin hole 24 is formed in the mounting seat 16; when the pin hole 24 is aligned with the insertion hole 22, the pin hole 24 is also aligned with the drain opening 21.
The purpose that should set up is in the guard plate 11 back that finishes of installation, utilize the round pin post 23 to insert in the pinhole 24 on spliced eye 22 and the mount pad 16, conveniently fix a position the guard plate 11 after finishing the installation like this, guarantee that two adjacent guard plate 11 splice plates 17 splice closely, have waterproof function, avoid two adjacent guard plates 11 to slide in interface slot 15 because not fixed, and then the concatenation is inseparable, so that leak, make external surface water get into the foundation ditch. As described above, the protection plate 11 of the present invention may be subjected to a horizontal pressure of a soil pile during actual use, and inserting the pin 23 into the pin hole 24 can not only prevent the protection plate 11 from being untight in splicing and leaking water, but also help maintain the vertical position of the protection plate 11 to limit the position of the protection plate 11, thereby preventing the protection plate 11 from falling.
As a further scheme of the invention, a sliding rail 31 is vertically arranged on one side of the protection plate 11 close to the foundation pit, and a supporting seat 32 is slidably arranged in the sliding rail 31; a sliding seat 33 is horizontally and movably installed on the upper end surface of the waterproof curtain pile body 12, and the sliding seat 33 is hinged with the supporting seat 32 through a hinge rod 34; a first sliding column 35 and a second sliding column 36 are respectively and fixedly mounted on one horizontal side of the sliding seat 33 close to the foundation pit and one side of the pin column 23 close to the foundation pit; the first sliding column 35 and the second sliding column 36 are respectively installed in the first sliding groove 37 and the second sliding groove 38 in a sliding manner; the first sliding groove 37 and the second sliding groove 38 are respectively formed at the upper end and the lower end of the rotating rod 39; the rotating rod 39 is rotatably installed on the waterproof curtain pile body 12, and a torsion spring 40 is arranged between the rotating rod 39 and the waterproof curtain pile body 12.
The protection plate 11 generally has a certain elasticity in actual use. In order to further maintain the protection plate 11 to be vertical when the protection plate 11 is subjected to pressure in the horizontal direction of the soil pile, the invention also provides a supporting seat 32 at one side of the protection plate 11 close to the foundation pit to provide supporting force for the protection plate 11. As shown in fig. 3 and 4, when the fender 11 is subjected to a horizontal force, the fender 11 may be elastically deformed, and at this time, the fender 11 falls downward, and the support seat 32 is supported by the hinge rod 34, so that the support seat 32 slides on the slide rail 31. The support base 32 slides upward relative to the slide rail 31, so that the support point of the support base 32 moves upward relative to the fender panel 11, and the support force for the fender panel 11 is improved. When the slide rail slides to the top end of the slide rail 31, the protection plate 11 continues to topple, and the protection plate 11 drives the support seat 32 to topple together. The supporting seat 32 drives the sliding seat 33 to move horizontally to one side close to the foundation pit through the hinge rod 34, the sliding seat 33 moves to drive the first sliding column 35 fixedly installed on the sliding seat to move, and the first sliding column 35 is in sliding connection in the first sliding groove 37 at the upper end of the rotating rod 39, so that the rotating rod 39 is driven to rotate clockwise. The clockwise rotation of the rotating rod 39 can drive the second sliding groove 38 at the lower end of the rotating rod 39 to catch the ground clockwise, the second sliding column 36 drives the pin 23 to horizontally move towards the direction far away from one side of the foundation pit, the pin 23 passes through the pin hole 24 on the mounting seat 16 and is inserted into the water outlet 21, and the blockage in the water outlet 21 is cleaned out, so that the smoothness of the water outlet 21 is ensured. When the pin 23 of the present invention is just fixed to the protection plate 11, the pin 23 is not completely inserted into the pin hole 24, and the pin 23 is prevented from blocking the drainage passage of the drainage port 21. When the protection plate 11 is horizontally pressed, the pin 23 is driven to penetrate through the pin hole 24 in the mounting seat 16 by the pressure generated when the protection plate 11 is tilted and is inserted into the water outlet 21, so that the water outlet 21 is cleaned, the pin 23 can be stably positioned on the mounting seat 16, and the protection plate 11 is helped to maintain a vertical state. The torsion spring 40 of the present invention is used for driving the rotation rod 39 to rotate when the horizontal pressure of the protection plate 11 disappears, and pulling back the pin 23, so that the sliding seat 33 and the supporting seat 32 are reset, and the protection plate 11 is assisted to restore elastic deformation.
The invention also provides a construction method of the vertical combined type impervious waterproof curtain, which comprises the impervious waterproof curtain of at least one of the claims 1 to 7, and is characterized in that: the method mainly comprises the following steps:
s1: paying off, positioning and grooving;
s2: constructing a pre-exploring hole 18, namely arranging the pre-exploring hole 18 along the axis of a foundation pit, wherein the hole distance of the pre-exploring hole 18 is the same as the pile distance of a water curtain pile body in subsequent construction, the aperture of the pre-exploring hole 18 is the same as the size of the embedding claw 14, the depth of a stable water-resisting layer is explored by the pre-exploring hole 18, and the pre-exploring hole 18 enters a final hole which is at least 1 meter below the stable water-resisting layer;
s3: the method comprises the following steps that a stirring drilling machine is in place, three-axis stirring pile construction is carried out, the driving depth of the three-axis stirring pile is up to the depth of a stable water-resisting layer, and the burial depth position of the bottom of the three-axis stirring pile is recorded;
s4: draining and discharging slurry of the triaxial mixing pile;
s5: placing the embedded column 13 to the bottom of the triaxial mixing pile, and embedding the embedded claw 14 into the pre-drilled hole 18; when the step is carried out, reinforcement cages can be placed at intervals according to actual requirements, so that the strength of the waterproof curtain pile body 12 is enhanced;
s6: arranging a guniting guide pipe for guniting so that the embedded column 13 is sealed in the cement column by cement; a waterproof curtain pile body 12 after solidification;
s7: and a protection plate 11 is spliced and installed at the top end of the waterproof curtain pile body 12.
Claims (8)
1. The utility model provides a vertical combination formula prevention of seepage stagnant water curtain structure which characterized in that: comprises an upper protection plate (11), a middle waterproof curtain pile body (12) and a lower embedded column (13); the lower end of the embedded column (13) is fixedly provided with embedded claws (14), and the embedded claws (14) are arranged at intervals along the circumferential direction of the embedded column (13) and are embedded in a stable waterproof layer; the upper end of the embedded column (13) is sealed in the lower end of the waterproof curtain pile body (12) by cement;
the upper end of the waterproof curtain pile body (12) is exposed on the ground surface, the upper end face of the waterproof curtain pile body (12) is provided with a connector groove (15), and the connector groove (15) is used for installing a protection plate (11).
2. The vertically combined impervious waterproof curtain structure as claimed in claim 1, wherein: the length of the embedding claw (14) is at least 1.0 meter.
3. The vertically combined impervious waterproof curtain structure as claimed in claim 2, wherein: the lower end of the protection plate (11) is provided with an installation seat (16), and the installation seat (16) is slidably installed in the interface groove (15); splice plates (17) are fixedly mounted on the left side and the right side of the upper end of the protection plate (11) respectively, and the splice plates (17) are used for being spliced with splice plates (17) on another protection plate (11).
4. The vertically combined impervious waterproof curtain structure as claimed in claim 3, wherein: the interface groove (15) is a working opening groove.
5. The vertically combined impervious waterproof curtain structure as claimed in claim 4, wherein: one side, far away from the foundation pit, of the waterproof curtain pile body (12) is provided with a water outlet (21) which is horizontally arranged, the water outlet (21) is communicated with the bottom of the interface groove (15), and the water outlet (21) is used for discharging water in the interface groove (15).
6. The vertically combined impervious waterproof curtain structure of claim 5, wherein: one side, close to a foundation pit, of the waterproof curtain pile body (12) is provided with a horizontally-arranged inserting hole (22), the inserting hole (22) is communicated with the bottom of the interface groove (15), a pin column (23) is horizontally slidably mounted in the inserting hole (22) in a sliding mode, and a pin hole (24) is formed in the mounting seat (16); when the pin hole (24) is aligned with the insertion hole (22), the pin hole (24) is also aligned with the drain opening (21).
7. The vertically combined impervious waterproof curtain structure according to claim 6, wherein: one side, close to the foundation pit, of the protection plate (11) is vertically provided with a sliding rail (31), and a supporting seat (32) is arranged in the sliding rail (31) in a sliding mode; a sliding seat (33) is horizontally and slidably installed on the upper end face of the pile body of the waterproof curtain (12), and the sliding seat (33) is hinged with the supporting seat (32) through a hinge rod (34); a first sliding column (35) and a second sliding column (36) are respectively and fixedly mounted on one side of the sliding seat (33) close to the foundation pit and one side of the pin column (23) close to the foundation pit; the first sliding column (35) and the second sliding column (36) are respectively installed in the first sliding groove (37) and the second sliding groove (38) in a sliding mode; the first sliding groove (37) and the second sliding groove (38) are respectively arranged at the upper end and the lower end of the rotating rod (39); the dwang (39) rotate to be installed on the waterproof curtain pile body (12), dwang (39) with be provided with torsional spring (40) between the waterproof curtain pile body (12).
8. A construction method of a vertically combined type waterproof curtain, comprising the waterproof curtain according to at least one of claims 1 to 7, characterized in that: the method mainly comprises the following steps:
s1: paying off, positioning and grooving;
s2: constructing a pre-exploring hole (18), arranging the pre-exploring hole (18) along the axis of a foundation pit, wherein the hole distance of the pre-exploring hole (18) is the same as the pile distance of a water curtain pile body in subsequent construction, the aperture of the pre-exploring hole (18) is the same as the size of the embedding claw (14), the depth of a stable water-resisting layer is explored by the pre-exploring hole (18), and the pre-exploring hole (18) enters a final hole which is at least (1) meter below the stable water-resisting layer;
s3: the method comprises the following steps that a stirring drilling machine is in place, three-axis stirring pile construction is carried out, the driving depth of the three-axis stirring pile is up to the depth of a stable water-resisting layer, and the burial depth position of the bottom of the three-axis stirring pile is recorded;
s4: draining and discharging slurry of the triaxial mixing pile;
s5: placing the embedded column (13) to the bottom of the triaxial mixing pile, and embedding the embedded claw (14) into the pre-drilled hole (18);
s6: arranging a guniting guide pipe for guniting so that the embedded column (13) is sealed in the cement column by cement; a waterproof curtain pile body (12) after the waterproof curtain pile body is solidified;
s7: and a protection plate (11) is spliced and installed at the top end of the waterproof curtain pile body (12).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211016048.2A CN115233697B (en) | 2022-08-24 | 2022-08-24 | Vertical combined type seepage-proofing and water-stopping curtain structure and construction method |
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| CN202211016048.2A CN115233697B (en) | 2022-08-24 | 2022-08-24 | Vertical combined type seepage-proofing and water-stopping curtain structure and construction method |
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| CN115233697B CN115233697B (en) | 2023-03-28 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104032763A (en) * | 2014-06-25 | 2014-09-10 | 上海市建工设计研究院有限公司 | Combined-type anti-seepage waterstop curtain structure and construction method thereof |
| CN106275311A (en) * | 2016-08-31 | 2017-01-04 | 中船第九设计研究院工程有限公司 | A kind of taper pile bearing platform type wing wall structure and construction method thereof |
| AU2020103672A4 (en) * | 2020-11-25 | 2021-02-04 | Beijing Building Materials Engineering Co. Ltd | Construction method of rotary drilling hole-forming and jet mixing cement-soil occlusion curtain piles |
| CN112609705A (en) * | 2020-12-09 | 2021-04-06 | 中国化学工程第六建设有限公司 | Steel sheet pile supporting system and method suitable for shallow soft soil foundation pit |
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2022
- 2022-08-24 CN CN202211016048.2A patent/CN115233697B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104032763A (en) * | 2014-06-25 | 2014-09-10 | 上海市建工设计研究院有限公司 | Combined-type anti-seepage waterstop curtain structure and construction method thereof |
| CN106275311A (en) * | 2016-08-31 | 2017-01-04 | 中船第九设计研究院工程有限公司 | A kind of taper pile bearing platform type wing wall structure and construction method thereof |
| AU2020103672A4 (en) * | 2020-11-25 | 2021-02-04 | Beijing Building Materials Engineering Co. Ltd | Construction method of rotary drilling hole-forming and jet mixing cement-soil occlusion curtain piles |
| CN112609705A (en) * | 2020-12-09 | 2021-04-06 | 中国化学工程第六建设有限公司 | Steel sheet pile supporting system and method suitable for shallow soft soil foundation pit |
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| CN115233697B (en) | 2023-03-28 |
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