CN113026753B - Design bottom sealing concrete construction structure and method for water seepage cofferdam - Google Patents
Design bottom sealing concrete construction structure and method for water seepage cofferdam Download PDFInfo
- Publication number
- CN113026753B CN113026753B CN202110310591.2A CN202110310591A CN113026753B CN 113026753 B CN113026753 B CN 113026753B CN 202110310591 A CN202110310591 A CN 202110310591A CN 113026753 B CN113026753 B CN 113026753B
- Authority
- CN
- China
- Prior art keywords
- seepage
- positioning
- cofferdam
- concrete
- bottom sealing
- Prior art date
- 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.)
- Active
Links
Images
Classifications
-
- 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
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
- Revetment (AREA)
Abstract
The utility model relates to a infiltration cofferdam design back cover concrete construction structure, including the cofferdam body, the cofferdam body is the cube steel jacket case of vertical setting, has pour the concrete back cover in the lower extreme department of cube steel jacket incasement side, the lower extreme department of cofferdam body be provided with prevention of seepage mechanism, prevention of seepage mechanism includes prevention of seepage coiled material, prevention of seepage frame, prevention of seepage stagnant water board, prevention of seepage coiled material sets up along the inside wall circumference of cube steel jacket case lower extreme, prevention of seepage frame includes fixed part, connecting portion and support body, fixed part fixed mounting is on the inside wall of cube steel jacket case, connecting portion detachable fixed mounting is at the downside of fixed part, prevention of seepage frame fixed mounting is at the downside of connecting portion, prevention of seepage stagnant water board fixed mounting is on the support body, the top surface of concrete back cover is higher than prevention of seepage stagnant water board and is less than the fixed part. This application has through separating fixed part and connecting portion to make cofferdam body and connecting portion separation, be convenient for dismantle the effect that gets off with the cofferdam body.
Description
Technical Field
The application relates to the field of steel cofferdam construction technology, in particular to a design bottom sealing concrete construction structure of a water seepage cofferdam and a method thereof.
Background
The steel cofferdam in the bridge foundation construction is usually used as an underwater bearing platform construction water retaining structure. And pouring the bottom sealing concrete after the construction of the steel cofferdam is finished, pumping accumulated water in the cofferdam out after the bottom sealing concrete has certain strength to form a dry operation environment, and allowing an operator to enter the cofferdam to bind steel bars and construct a bearing platform and a pier. After the bottom sealing concrete is poured in the steel cofferdam, the steel cofferdam and the bottom sealing concrete are different materials, so that an obvious interface exists, the steel cofferdam and the bottom sealing concrete have different temperature deformation coefficients, the bonding force between the steel cofferdam and the bottom sealing concrete is uncertain, a gap is easily formed between the side wall of the steel cofferdam and the bottom sealing concrete, and the phenomenon of water leakage or water seepage occurs. In addition, the steel cofferdam structure is generally positioned in water, displacement and deformation can occur under the influence of water flow, tide and the like, the gap between the steel cofferdam and the bottom sealing concrete is further increased, and the water leakage or water seepage phenomenon is further aggravated.
If chinese patent with publication number CN110374121A discloses a water stop structure between steel cofferdam side wall and back cover concrete and a construction method, including steel cofferdam side wall and back cover concrete, the back cover concrete is poured at the bottom of the steel cofferdam side wall, the side of the steel cofferdam side wall embedded into the back cover concrete is fixedly connected with a water stop steel plate, the water stop steel plate is embedded into the back cover concrete, grouting floral tubes are placed on the water stop steel plate, a plurality of through holes are spaced on the outer wall of the grouting floral tubes, and a film is sleeved outside the grouting floral tubes. It has the advantage that sets up multichannel stagnant water protective screen, can effectively prevent the infiltration condition that later stage construction produced, guarantees the anhydrous operation environment in the cofferdam.
In the prior art, because the structures such as the angle steel and the water stop steel plate in the structure are fixedly arranged on the surface of the cofferdam, when the cofferdam body needs to be dismantled after use, the water stop steel plate embedded in the concrete bottom sealing layer cannot be conveniently dismantled, so that the cofferdam body is not convenient to dismantle.
Disclosure of Invention
In order to improve when demolising the cofferdam body, be not convenient for demolish the problem of removing the cofferdam body, this application provides a infiltration cofferdam design back cover concrete construction structure and method.
In a first aspect, the application provides a design back cover concrete construction structure of a water seepage cofferdam, which adopts the following technical scheme:
a designed bottom sealing concrete construction structure of a water seepage cofferdam comprises a cofferdam body, wherein the cofferdam body is a vertically arranged cubic steel sleeve box, a concrete bottom sealing layer is poured at the lower end of the inner side of the cubic steel sleeve box, a seepage-proofing mechanism is arranged at the lower end of the cofferdam body and comprises seepage-proofing coiled materials, a seepage-proofing frame and seepage-proofing water stop plates, the seepage-proofing coiled materials are circumferentially arranged along the inner side wall of the lower end of the cubic steel sleeve box and comprise fixing parts, connecting parts and a frame body, the fixing parts are fixedly arranged on the inner side wall of the cubic steel sleeve box and are higher than the seepage-proofing coiled materials, the connecting parts are detachably and fixedly arranged at the lower sides of the fixing parts, the upper side edges of the seepage-proofing coiled materials are higher than the lower side edges of the connecting parts, the connecting parts are tightly attached to the seepage-proofing coiled materials, the frame body is fixedly arranged at the lower sides of the connecting parts, the frame body is tightly attached to the seepage-proofing coiled materials, and the seepage-proofing water stop plates are fixedly arranged on the frame body, the side of the anti-seepage water stop plate close to the cofferdam body is tightly attached to the anti-seepage coiled material, one side of the anti-seepage water stop plate far away from the cofferdam body is located on the outer side of the support body, the side edge located on the outer side of the support body is higher than the side edge close to the cofferdam body and lower than the fixing part, and the top surface of the concrete bottom sealing layer is higher than the anti-seepage water stop plate and lower than the fixing part.
Through adopting above-mentioned technical scheme, the lower extreme department of cube steel bushing box inside wall lays the prevention of seepage coiled material at first, later installs fixed part, connecting portion and support body again. The connecting part and the frame body can be abutted against the anti-seepage coiled material, so that the anti-seepage coiled material is tightly attached. And the frame body is provided with the anti-seepage water stop plate attached to the anti-seepage coiled material, so that the anti-seepage water stop plate can block moisture when the water seepage phenomenon occurs, and the speed of the moisture permeating along the concrete sealing bottom layer is slowed down. When pouring, the concrete bottom sealing layer embeds part of the connecting parts and the anti-seepage water stop plates in the inner side, after pouring is finished, the connecting parts and the anti-seepage water stop plates are fixedly connected with the concrete bottom sealing layer, and the fixing parts and the connecting parts are separated, so that the cofferdam body is separated from the connecting parts, and the cofferdam body is convenient to disassemble.
Optionally, cofferdam body inboard be provided with positioning mechanism, positioning mechanism includes the spud, location crossbeam and location tie-beam, the lower extreme of spud is buried underground in the ground of cube steel jacket case downside, the upper end of spud is higher than the fixed part, the spud is provided with a plurality of, and the spud is the rectangular array and distributes in cofferdam body inboard, the setting of location crossbeam is between two adjacent spuds to with spud fixed connection, location tie-beam fixed mounting is on the spud adjacent with cube steel jacket case, the other end and the support body fixed connection of location tie-beam.
Through adopting above-mentioned technical scheme, the spud is buried underground in the ground and mutual fixed connection, makes the spud form a whole, consolidates the structure of cofferdam body lower part. And the positioning pile is fixedly connected with the frame body through the positioning connecting beam, so that the frame body is fixedly connected with the cubic steel sleeve box. After the concrete bottom sealing layer is poured, the positioning mechanism arranged in the concrete bottom sealing layer can play a reinforcing effect on the concrete bottom sealing layer, so that the concrete bottom sealing layer is not easy to displace and deform, and water leakage or water seepage is not easy to occur on the concrete bottom sealing layer.
Optionally, the two groups of positioning beams are arranged, the heights of the positioning beams in the same group are equal, one group of positioning beams is higher than the other group of positioning beams, and the top surface of the concrete bottom sealing layer is located between the two groups of positioning beams.
Through adopting above-mentioned technical scheme, the location crossbeam divide into two sets ofly, and the top surface of concrete bottom sealing layer is located between two sets of location crossbeams to the upper end and the lower extreme that make the spud are connected closely. After the concrete is poured, each positioning pile still keeps a stable structure state.
Optionally, the positioning mechanism further comprises a positioning support beam, the positioning support beam is fixedly mounted on the positioning pile adjacent to the cubic steel pouring jacket, the positioning support beam is equal to the positioning cross beam on the upper side in height, the positioning cross beam on the lower side is equal to the positioning connecting beam in height, and the end, close to the cubic steel pouring jacket, of the positioning support beam is fixedly connected with the cubic steel pouring jacket.
Through adopting above-mentioned technical scheme, a location supporting beam connects spud and cube steel jacket case, and cube steel jacket case upper end is lived by stable support, has improved the intensity of cube steel jacket case.
Optionally, the cube steel pouring jacket include three piece at least cover boxboards, the cover boxboard is the concatenation head and the tail in proper order, the medial surface and the lateral surface of cover boxboard all are provided with a plurality of bulge, the bulge is bar and vertical setting, the bulge is along the equidistant setting of the lower side of cover boxboard.
Through adopting above-mentioned technical scheme, the cube steel pouring jacket is formed by the concatenation of polylith pouring jacket board, through setting up the bulge, can increase the intensity of pouring jacket board. After pumping water, the upper end and the lower end of the sleeve box plate are not prone to bending towards the inner side of the cubic steel sleeve box, and therefore the whole cubic steel sleeve box is not prone to deformation and damage.
Optionally, the fixing portion is strip-shaped and horizontally arranged, and the fixing portion is fixedly installed on the surface of the protruding portion on the inner side of the box sheathing board.
Through adopting above-mentioned technical scheme, the fixed part sets up the structure of long bar, and sets up along the inside wall of box sheathing board, can increase the intensity of box sheathing board. After drawing water, the phenomenon of buckling towards the inside of the cubic steel bushing box is not easy to appear at the left end and the right end of the bushing box plate, and then the phenomenon of deformation and damage is not easy to appear in the whole cubic steel bushing box.
Optionally, the protruding portions on the box sheathing board are arranged along the upper side edge of the box sheathing board, a gap is formed between every two adjacent protruding portions on the same side surface, and the protruding portions on different side surfaces are arranged in a staggered mode along the upper side edge of the box sheathing board in sequence.
Through adopting above-mentioned technical scheme, make the bulge on two sides of pouring jacket board crisscross each other, can carry out more even reinforcement to the pouring jacket board, make the pouring jacket board be difficult to appear the phenomenon of warping.
In a second aspect, the application provides a construction method for designing bottom sealing concrete of a water seepage cofferdam, which adopts the following technical scheme:
a construction method of design bottom sealing concrete of a water seepage cofferdam comprises the following steps:
s1, construction preparation, namely, transporting the material to a construction site, inspecting, measuring, classifying and numbering in detail, and trimming;
s2, driving a positioning pile into the foundation, and welding an upper positioning beam;
s3, driving the box sheathing plates into the foundation, and combining the box sheathing plates into a cubic steel box sheathing;
s4, cofferdam bottom sealing, dredging the interior of the cubic steel sleeve box, reinforcing the upper end of the cubic steel sleeve box, throwing rubbles in advance, injecting bottom sealing concrete, and draining after the bottom sealing concrete is poured;
s5, paving an anti-seepage mechanism, paving an anti-seepage coiled material along the box sheathing board after drainage is finished, and installing an anti-seepage frame and an anti-seepage water stop board;
s6, reinforcing the cubic steel sleeve box, and installing a positioning connecting beam and a positioning supporting beam on the positioning pile;
and S7, pouring the concrete bottom sealing layer, so that the top surface of the concrete bottom sealing layer is higher than the anti-seepage water stop plate and lower than the fixing part.
By adopting the technical scheme, the positioning pile and the sleeve box plate are installed firstly, the bottom sealing concrete is poured preliminarily, sludge and water in the cubic steel sleeve box are removed after the bottom sealing concrete is solidified, the anti-seepage mechanism and the positioning mechanism are installed, and the concrete bottom sealing layer is poured finally. Through pouring the concrete back cover twice, can effectively reduce the probability of the infiltration phenomenon that later stage construction produced, make the inside good operational environment that keeps of cube steel pouring jacket.
In summary, the present application includes at least one of the following beneficial technical effects:
1. after pouring is finished, the connecting part and the anti-seepage water stop plate are fixedly connected with the concrete bottom sealing layer, and the cofferdam body is separated from the connecting part by separating the fixing part from the connecting part, so that the cofferdam body is convenient to disassemble;
2. can carry out more even reinforcement to the pouring jacket board, make the pouring jacket board be difficult to the phenomenon that the deformation appears.
Drawings
Fig. 1 is a schematic structural diagram of the present embodiment.
Fig. 2 is a schematic structural view after a part of the cofferdam body is hidden.
Fig. 3 is a schematic structural view after the concrete bottom sealing layer is hidden.
Description of reference numerals: 1. a cofferdam body; 11. a cubic steel jacket box; 12. sheathing the box plate; 13. a projection; 2. an anti-seepage mechanism; 21. an impermeable coiled material; 22. an anti-seepage frame; 221. a fixed part; 222. a connecting portion; 2221. connecting the threaded columns; 223. a frame body; 23. an impermeable water stop plate; 3. a positioning mechanism; 31. positioning the pile; 32. positioning the cross beam; 33. positioning the connecting beam; 34. positioning the support beam; 4. a concrete bottom sealing layer; 5. and (5) foundation construction.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses design back cover concrete construction structure of infiltration cofferdam. Referring to fig. 1 and 2, the designed bottom sealing concrete construction structure of the water seepage cofferdam comprises a cofferdam body 1, the cofferdam body 1 is a vertically arranged cubic steel pouring jacket 11, and an anti-seepage mechanism 2 and a positioning mechanism 3 are arranged on the inner side of the cubic steel pouring jacket 11.
Referring to fig. 1, a cubic steel jacket 11 includes four jacket plates 12, and the jacket plates 12 are sequentially connected end to end. A boss 13 is mounted on the jacket plate 12. The bulge 13 is the steel sheet of rectangular shape, and two long limits of steel sheet are all towards the same one side bending type of steel sheet, and the angle of just buckling is the acute angle, two long limits and the pouring jacket board 12 fixed connection of bulge 13. The protruding parts 13 on the same side of the box sheathing board 12 are arranged at equal intervals along the upper side of the box sheathing board 12, and the protruding parts 13 on two sides of the box sheathing board 12 are arranged in sequence in a staggered manner along the upper side of the box sheathing board 12.
Referring to fig. 2 and 3, the seepage-proofing mechanism 2 comprises a seepage-proofing coiled material 21, a seepage-proofing frame 22 and a seepage-proofing water-stopping plate 23, wherein the seepage-proofing coiled material 21 is laid in a circle along the inner side wall of the lower end of the cubic steel pouring jacket 11. The anti-seepage frame 22 comprises a fixing part 221, a connecting part 222 and a frame body 223, wherein the fixing part 221 is rod-shaped and is horizontally arranged. The fixing portion 221 is closely attached to the side of the protruding portion 13 away from the box plate 12, and is fixedly mounted on the protruding portion 13 by bolts. The connecting portion 222 is block-shaped, a connecting threaded post 2221 is welded on the top surface of the connecting portion 222, the connecting portion 222 is fixedly disposed on the bottom surface of the protruding portion 13, and the connecting threaded post 2221 penetrates through the fixing portion 221 and is fixedly mounted on the fixing portion 221 through a nut. The frame body 223 is cylindrical and vertically welded to the bottom surface of the connecting portion 222, and both the connecting portion 222 and the frame body 223 are located at positions to be attached to the side surfaces of the protruding portions 13 away from the box board. The side edge of the anti-seepage water stop plate 23, which is far away from the center of the cubic steel pouring jacket 11, is attached to the side wall of the pouring jacket plate 12, the side wall of the protruding portion 13 and the side wall of the frame body 223, wherein a gap between the anti-seepage water stop plate 23 and the side wall of the pouring jacket plate 12 and the side wall of the protruding portion 13 is sealed through saw dust mixed with wet fine sand, and the anti-seepage water stop plate 23 is welded with the side wall of the frame body 223 for sealing. The side wall of the frame body 223 far away from the box sheathing board 12 is connected with an inclined strut, the upper end of the inclined strut is welded with the bottom surface of the anti-seepage water stop board 23, the side edge of the anti-seepage water stop board 23 far away from the box sheathing board 12 is higher than the side wall close to the box sheathing board 12, and the side edge of the anti-seepage water stop board 23 far away from the box sheathing board 12 is lower than the fixing part 221.
Referring to fig. 2 and 3, the positioning mechanism 3 includes a positioning pile 31, a positioning cross beam 32, a positioning connecting beam 33, and a positioning support beam 34. The lower end of the positioning pile 31 is buried in the foundation 5 on the lower side of the cubic steel pouring jacket 11, and four positioning piles 31 are arranged and distributed on the inner side of the cofferdam body 1 in a rectangular array. The positioning beam 32 is disposed between two adjacent positioning piles 31, and is welded with the positioning piles 31. The positioning beams 32 are provided in two groups, the positioning beams 32 in the same group have the same height, and the heights of the two groups of positioning beams 32 are different. The height of the group of positioning beams 32 with lower height is equal to that of the frame body 223, and the height of the group of positioning beams 32 with higher height is higher than that of the anti-seepage frame 22. The equal level setting of location tie-beam 33 and location supporting beam 34, the height of location tie-beam 33 and a set of location crossbeam 32 of downside highly equals, the one end and the spud 31 welding of location tie-beam 33, the other end and the support body 223 welding of location tie-beam 33, the height of location supporting beam 34 and a set of location crossbeam 32 of upside highly equals, the one end and the spud 31 welding of location supporting beam 34, the other end and the pouring jacket board 12 welding of location supporting beam 34.
Referring to fig. 2, a concrete bottom sealing layer 4 is poured in the cubic steel pouring jacket 11, and the top surface of the concrete bottom sealing layer 4 is higher than the watertight plate 23 and lower than the fixing part 221.
The implementation principle of the seepage cofferdam design back cover concrete construction structure is as follows: the anti-seepage coiled material 21 is paved at the lower end of the inner side wall of the cubic steel pouring jacket 11, then the fixing part 221, the connecting part 222 and the frame body 223 are installed, and the connecting part 222 and the frame body 223 are abutted to the anti-seepage coiled material 21, so that the anti-seepage coiled material 21 is tightly attached to the cubic steel pouring jacket 11, and the phenomenon of water seepage due to untight attachment is avoided. And the frame body 223 is provided with the anti-seepage water-stop plate 23 attached to the anti-seepage coiled material 21, and the side edge of the anti-seepage water-stop plate 23 close to the box sheathing plate 12 is sealed by mixing the wet fine sand with sawdust and welding. When water seepage occurs, the anti-seepage water stop plate 23 can stop moisture, and the speed of the moisture permeating along the concrete bottom sealing layer 4 is slowed down. The positioning piles 31 buried in the foundation 5 are arranged in the cubic steel pouring jacket 11, and the positioning piles 31 support the cubic steel pouring jacket 11 through the positioning connecting beams 33 and the positioning supporting beams 34, so that the cubic steel pouring jacket 11 is kept stable. Meanwhile, the protruding parts 13 are arranged on the side walls of the cubic steel pouring jacket 11, so that the phenomenon of deformation and damage is not easy to occur after water is pumped from the inside of the cubic steel pouring jacket 11. After the concrete bottom sealing layer 4 is poured, a part of anti-seepage frames 22, anti-seepage water stop plates 23, a group of positioning cross beams 32 on the lower side and positioning connecting beams 33 are embedded in the concrete bottom sealing layer 4 to reinforce the concrete bottom sealing layer 4, so that the concrete bottom sealing layer 4 is not easy to deform, crack and damage. When the concrete bottom sealing layer 4 is poured and the box sheathing board 12 needs to be detached, because the top surface of the concrete bottom sealing layer 4 is higher than the anti-seepage water stop plate 23 and lower than the fixing part 221, the cofferdam body 1 is separated from the connecting part 222 by unscrewing the bolts on the top surface of the fixing part 221 and cutting the positioning supporting beam 34, so that the box sheathing board 12 can be detached conveniently.
The embodiment of the application also discloses a construction method for designing the bottom sealing concrete of the water seepage cofferdam. Referring to fig. 2 and 3, the construction method of the design of the bottom-sealing concrete for the permeable cofferdam includes the steps of,
s1, construction preparation, namely, transporting the materials to a construction site, checking, measuring, classifying and numbering in detail, and trimming;
s2, driving the positioning piles 31, driving four positioning piles 31 into the foundation 5 in a rectangular array, and welding two groups of positioning cross beams 32 between every two adjacent positioning piles 31 to connect the positioning piles 31 into a whole;
s3, driving the box sheathing plates 12, installing the protruding parts 13 on the box sheathing plates 12 in advance, driving the box sheathing plates 12 into the foundation 5, connecting the adjacent ends of the two box sheathing plates 12 together, and combining and splicing the two box sheathing plates into the cubic steel box sheathing 11;
s4, cofferdam bottom sealing, dredging the interior of the cubic steel pouring jacket 11, welding an inclined rod at the upper end of the cubic steel pouring jacket 11 for reinforcement, throwing a rubble into the bottom of the cubic steel pouring jacket 11 in advance, injecting bottom sealing concrete by adopting a guide pipe method, and discharging water in the cubic steel pouring jacket 11 after the bottom sealing concrete is continuously poured for one time;
s5, paving an anti-seepage mechanism 2, paving an anti-seepage coiled material 21 along the box sheathing board 12 after drainage is finished, and installing an anti-seepage frame 22 and an anti-seepage water stop board 23;
s6, reinforcing the cubic steel pouring jacket 11, and installing a positioning connecting beam 33 and a positioning supporting beam 34 on the positioning pile 31 to enable the positioning pile 31 to support the cubic steel pouring jacket 11;
and S7, pouring the concrete bottom sealing layer 4, so that the top surface of the concrete bottom sealing layer 4 is higher than the anti-seepage water stop plate 23 and lower than the fixing part 221.
The implementation principle of the construction method for designing the bottom sealing concrete of the water seepage cofferdam in the embodiment of the application is as follows: firstly installing the positioning pile 31 and the sleeve box plate 12, pouring bottom sealing concrete preliminarily, removing sludge and water in the cubic steel sleeve box 11 after the bottom sealing concrete is solidified, installing the anti-seepage mechanism 2 and the positioning mechanism 3, and finally pouring the concrete bottom sealing layer 4. By pouring the concrete bottom sealing layer 4 twice, the probability of water seepage generated in later construction can be effectively reduced, and a good operation environment is kept inside the cubic steel pouring jacket 11.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides a infiltration cofferdam design back cover concrete construction structure, includes cofferdam body (1), and for cube steel pouring jacket (11) of vertical setting, concrete back cover (4), its characterized in that have been pour to lower extreme department at cube steel pouring jacket (11) inboard in cofferdam body (1): the cofferdam comprises a cofferdam body (1), wherein the lower end of the cofferdam body (1) is provided with an anti-seepage mechanism (2), the anti-seepage mechanism (2) comprises an anti-seepage coiled material (21), an anti-seepage frame (22) and an anti-seepage water stop plate (23), the anti-seepage coiled material (21) is arranged along the circumferential direction of the inner side wall of the lower end of a cubic steel pouring jacket (11), the anti-seepage frame (22) comprises a fixing part (221), a connecting part (222) and a frame body (223), the fixing part (221) is fixedly arranged on the inner side wall of the cubic steel pouring jacket (11), the fixing part (221) is higher than the anti-seepage coiled material (21), the connecting part (222) is detachably and fixedly arranged on the lower side of the fixing part (221), the upper side of the anti-seepage coiled material (21) is higher than the lower side of the connecting part (222), the connecting part (222) is tightly attached to the anti-seepage coiled material (21), the frame body (223) is fixedly arranged on the lower side of the connecting part (222), and the frame body (223) is tightly attached to the anti-seepage coiled material (21), the anti-seepage water stop plate (23) is fixedly installed on the support body (223), one side, close to the cofferdam body (1), of the anti-seepage water stop plate (23) is tightly attached to the anti-seepage coiled material (21), one side, far away from the cofferdam body (1), of the anti-seepage water stop plate (23) is located on the outer side of the support body (223), the side edge, located on the outer side of the support body (223), is higher than the side edge, close to the cofferdam body (1) and lower than the fixing portion (221), and the top surface of the concrete bottom sealing layer (4) is higher than the anti-seepage water stop plate (23) and lower than the fixing portion (221).
2. The water seepage cofferdam design back cover concrete construction structure of claim 1, characterized in that: the cofferdam comprises a cofferdam body (1), and is characterized in that a positioning mechanism (3) is arranged on the inner side of the cofferdam body (1), the positioning mechanism (3) comprises positioning piles (31), positioning cross beams (32) and positioning connecting beams (33), the lower ends of the positioning piles (31) are embedded in a foundation (5) on the lower side of a cubic steel pouring jacket (11), the upper ends of the positioning piles (31) are higher than fixing parts (221), a plurality of positioning piles (31) are arranged, the positioning piles (31) are distributed on the inner side of the cofferdam body (1) in a rectangular array mode, the positioning cross beams (32) are arranged between every two adjacent positioning piles (31) and are fixedly connected with the positioning piles (31), the positioning connecting beams (33) are fixedly installed on the positioning piles (31) adjacent to the cubic steel pouring jacket (11), and the other ends of the positioning connecting beams (33) are fixedly connected with a frame body (223).
3. The water seepage cofferdam design back cover concrete construction structure of claim 2, characterized in that: the positioning cross beams (32) are arranged in two groups, the height of the positioning cross beams (32) in the same group is equal, one group of positioning cross beams (32) are higher than the other group of positioning cross beams (32), and the top surface of the concrete bottom sealing layer (4) is positioned between the two groups of positioning cross beams (32).
4. The water seepage cofferdam design back cover concrete construction structure of claim 3, characterized in that: the positioning mechanism (3) further comprises a positioning support beam (34), the positioning support beam (34) is fixedly installed on the positioning pile (31) adjacent to the cubic steel pouring jacket (11), the positioning support beam (34) is equal to the positioning cross beam (32) on the upper side in height, the positioning cross beam (32) on the lower side is equal to the positioning connecting beam (33) in height, and the end, close to the cubic steel pouring jacket (11), of the positioning support beam (34) is fixedly connected with the cubic steel pouring jacket (11).
5. The water seepage cofferdam design back cover concrete construction structure of claim 1, characterized in that: cube steel pouring jacket (11) including three piece at least cover boxboard (12), cover boxboard (12) splice end to end in proper order, the medial surface and the lateral surface of cover boxboard (12) all are provided with a plurality of bulge (13), bulge (13) are bar and vertical setting, bulge (13) are along the equidistant setting of downside limit of cover boxboard (12).
6. The water seepage cofferdam design back cover concrete construction structure of claim 5, characterized in that: the fixing part (221) is in a long strip shape and is horizontally arranged, and the fixing part (221) is fixedly arranged on the surface of the convex part (13) on the inner side of the box sheathing board (12).
7. The water seepage cofferdam design back cover concrete construction structure of claim 5, characterized in that: protruding portion (13) on set boxboard (12) set up along set boxboard (12) upside, there is the space at the interval between two adjacent protruding portions (13) on the same side, and protruding portion (13) on the different sides set up along set boxboard (12) upside in proper order in a staggered manner.
8. A construction method of a design of a closed bottom concrete construction structure of a water seepage cofferdam according to any one of claims 1 to 7, characterized in that: the method comprises the following steps:
s1, construction preparation, namely, transporting the material to a construction site, inspecting, measuring, classifying and numbering in detail, and trimming;
s2, driving the positioning pile (31) into the foundation (5), and welding the upper positioning beam (32);
s3, driving the box sheathing plates (12) into the foundation (5), and combining and splicing the box sheathing plates (12) into the cubic steel box sheathing (11);
s4, cofferdam bottom sealing, namely dredging the interior of the cubic steel pouring jacket (11), reinforcing the upper end of the cubic steel pouring jacket (11), throwing stones in advance, then injecting bottom sealing concrete, and draining water after the bottom sealing concrete is poured;
s5, paving an anti-seepage mechanism (2), paving an anti-seepage coiled material (21) along the box sheathing board (12) after drainage is finished, and installing an anti-seepage frame (22) and an anti-seepage water stop board (23);
s6, reinforcing the cubic steel pouring jacket (11), and installing a positioning connecting beam (33) and a positioning supporting beam (34) on the positioning pile (31);
and S7, pouring the concrete bottom sealing layer (4) again, so that the top surface of the concrete bottom sealing layer (4) is higher than the anti-seepage water stop plate (23) and lower than the fixing part (221).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110310591.2A CN113026753B (en) | 2021-03-23 | 2021-03-23 | Design bottom sealing concrete construction structure and method for water seepage cofferdam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110310591.2A CN113026753B (en) | 2021-03-23 | 2021-03-23 | Design bottom sealing concrete construction structure and method for water seepage cofferdam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113026753A CN113026753A (en) | 2021-06-25 |
| CN113026753B true CN113026753B (en) | 2022-05-27 |
Family
ID=76473168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110310591.2A Active CN113026753B (en) | 2021-03-23 | 2021-03-23 | Design bottom sealing concrete construction structure and method for water seepage cofferdam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113026753B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE527511C2 (en) * | 2004-04-02 | 2006-03-28 | Aquavilla Ab | Float construction in concrete for a floating dwelling prepared for a collector hose for a heat pump |
| CN202730783U (en) * | 2012-08-02 | 2013-02-13 | 中交二航局第四工程有限公司 | Water sealing device between steel cofferdam and concrete |
| CN205557242U (en) * | 2016-04-15 | 2016-09-07 | 刘国良 | Prevention of seepage seal structure of concrete barrier layer |
| CN207376637U (en) * | 2017-11-06 | 2018-05-18 | 重庆建工第四建设有限责任公司 | A kind of open caisson seepage-proof structure |
| JP6664681B1 (en) * | 2019-01-21 | 2020-03-13 | アザイ技術コンサルタント株式会社 | Temporary deadline structure, construction method, and waterproof cover used for the construction method |
-
2021
- 2021-03-23 CN CN202110310591.2A patent/CN113026753B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113026753A (en) | 2021-06-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6266821B2 (en) | Deadline structure and deadline method | |
| CN112031374A (en) | Construction method of basement large-area terrace | |
| CN110499779B (en) | Construction method of air duct structure sharing side wall with subway station | |
| JP5885099B2 (en) | Temporary closing device around columnar object and temporary closing method | |
| KR20090029993A (en) | Underground structure and its construction method with retaining wall supported by rigid diaphragm | |
| KR101169462B1 (en) | Top-down construction method using post member | |
| CN110644538A (en) | Basement side wall extra front and back pouring belt periphery protection structure | |
| CN212801564U (en) | Foundation ditch steel sheet pile supporting construction | |
| CN103132465A (en) | Underground box culvert constructing method closely attached to pile foundation bearing platform | |
| CN113026753B (en) | Design bottom sealing concrete construction structure and method for water seepage cofferdam | |
| JP6422084B2 (en) | Underground space construction method | |
| JPH042728B2 (en) | ||
| CN116180757A (en) | Deep foundation pit supporting system | |
| CN210975900U (en) | Basement side wall extra front and back pouring belt periphery protection structure | |
| CN111827265A (en) | Construction method of steel reinforced concrete underground continuous wall | |
| KR101219451B1 (en) | Concrete structure and construction method for the same, constructing method of underground wall as a retaining structural wall used in the same | |
| CN110792103A (en) | Underground pipeline with integrated supporting piles and pipeline wall and construction method | |
| JP7480069B2 (en) | How to reinforce existing revetments | |
| JP2571426B2 (en) | Construction method of retaining wall | |
| CN114934535B (en) | Method for constructing impervious wall section by using grooved structure of impervious wall section | |
| JP7495904B2 (en) | Improvement structure and method of existing wharf | |
| CN217840090U (en) | Full-height inverted filter frame for pile-plate type retaining wall | |
| CN114032933B (en) | Construction method of steel cofferdam for underwater pier maintenance | |
| KR102197091B1 (en) | Underground structure wall and underground structure and method construturing the same | |
| CN118686125A (en) | Assembled longitudinal water-soil-rock passing cofferdam structure and construction method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |