CN214245784U - Double-row steel sheet pile diaphragm wall cofferdam - Google Patents
Double-row steel sheet pile diaphragm wall cofferdam Download PDFInfo
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- CN214245784U CN214245784U CN202022996219.5U CN202022996219U CN214245784U CN 214245784 U CN214245784 U CN 214245784U CN 202022996219 U CN202022996219 U CN 202022996219U CN 214245784 U CN214245784 U CN 214245784U
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Abstract
The utility model discloses a double steel sheet pile cut-off wall cofferdam. Double steel sheet pile cut-off wall cofferdam includes: the first pile wall comprises a plurality of steel sheet piles, and the steel sheet piles are arranged side by side to form the first pile wall; the second pile wall comprises a plurality of steel sheet piles, and the steel sheet piles are arranged side by side and connected into the second pile wall; the filler is filled between the first pile wall and the second pile wall; one end of each pull rod is connected with the first pile wall, and the other end of each pull rod is connected with the second pile wall; the anti-seepage wall is arranged between the first pile wall and the second pile wall and is buried in the filler, and the anti-seepage wall is made of concrete. Has the advantages that: the steel sheet pile can flexibly form a required cofferdam shape; the filler and the impervious wall are arranged between the first pile wall and the second pile wall, so that the anti-seepage effect is good, and the filler and the concrete are easy to obtain. The utility model relates to a cofferdam among the building engineering.
Description
Technical Field
The utility model relates to a cofferdam among the building engineering, in particular to double steel sheet pile cut-off wall cofferdam.
Background
Cofferdams are common structures in building engineering, for example, when a reservoir is built, the cofferdams are needed to be used for flood control, and the cofferdams are required to have good seepage-proofing performance. In the prior art, the cofferdam usually adopts the earth-rock structure, and technical defect lies in: the cofferdam of the earth-rock structure needs to apply earth and rock materials for realizing the anti-seepage performance, the exploitation of the earth and rock materials can damage the environment, and the earth and rock materials can reach the construction site only by long-distance transportation, so that the construction of the cofferdam is easily restricted by the geographical environment, and the construction period is easily delayed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve one of the technical problem that exists among the prior art at least, provide a barrier properties is good and convenient double steel sheet pile cut-off wall cofferdam of drawing materials.
The technical scheme adopted for solving the technical problems is as follows:
double steel sheet pile cut-off wall cofferdam includes:
the first pile wall comprises a plurality of steel sheet piles, and the steel sheet piles are arranged side by side to form the first pile wall;
the second pile wall comprises a plurality of steel sheet piles, and the steel sheet piles are arranged side by side and connected into the second pile wall;
the filler is filled between the first pile wall and the second pile wall;
one end of each pull rod is connected with the first pile wall, and the other end of each pull rod is connected with the second pile wall;
the anti-seepage wall is arranged between the first pile wall and the second pile wall and is buried in the filler, and the anti-seepage wall is made of concrete.
The double-row steel sheet pile diaphragm wall cofferdam at least has the following beneficial effects:
the first pile wall and the second pile wall are connected by steel sheet piles, so that the required cofferdam shape can be formed flexibly; the filler and the impervious wall are arranged between the first pile wall and the second pile wall, so that the anti-seepage effect is good, and the filler and the concrete are easy to obtain.
In a possible implementation manner, the double-row steel sheet pile diaphragm wall cofferdam further comprises a plurality of three-leg steel sheet piles, wherein the three-leg steel sheet piles are provided with a first leg, a second leg and a third leg, the first leg, the second leg and the third leg are respectively provided with a groove, and the first leg, the second leg or the third leg are respectively overlapped with the steel sheet piles and connected into a first pile wall or a second pile wall. The three-leg steel sheet pile can change the extending angle of the pile wall, so that the pile wall can be arranged into more shapes.
In one possible embodiment, the first leg and the second leg are integral and the third leg is fixedly connected to the first leg and the second leg by welding. The third foot is fixed by welding, so that the three-foot steel sheet pile is easy to manufacture.
In a possible implementation manner, a plurality of bending parts are further arranged on the first pile wall and/or the second pile wall, and a plurality of three-legged steel plate piles are arranged at the bending parts. The three-leg steel sheet pile can enable the first pile wall or the second pile wall to extend in a bending mode at the bending portion, and therefore the cofferdam with the required shape can be formed.
In a possible embodiment, the double-row steel sheet pile diaphragm wall cofferdam further comprises a third pile wall, wherein one end of the third pile wall is connected with the first pile wall, and the other end of the third pile wall is connected with the second pile wall. The third pile wall can further enhance the seepage-proofing performance of the double-row steel sheet pile seepage-proofing wall cofferdam and enhance the structural strength.
In a possible implementation mode, the double-row steel sheet pile diaphragm wall cofferdam further comprises a plurality of surrounding purlins, the surrounding purlins are arranged on the outer sides of the first pile wall and the second pile wall, and each steel sheet pile in the first pile wall and the second pile wall is fixedly connected with the surrounding purlins. Enclose the purlin and can strengthen the structural strength of first pile wall and second pile wall.
In a possible embodiment, the double-row steel sheet pile diaphragm wall cofferdam further comprises riprap which is stacked at the root parts of the first pile wall and the second pile wall. The riprap can enhance the structural stability of the double-row steel sheet pile diaphragm wall cofferdam.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural view of a double-row steel sheet pile diaphragm wall cofferdam of an embodiment of the utility model;
FIG. 2 is a schematic structural view of the "gravel packing" step of the embodiment of the present invention;
fig. 3 is a schematic structural diagram after the step of "driving steel sheet piles" of the embodiment of the present invention is completed;
fig. 4 is a schematic structural view after the step of "stone throwing and slope protection" of the embodiment of the present invention is completed;
fig. 5 is a schematic structural diagram of the embodiment of the present invention after the step of "placing the reinforcing channel steel" is completed;
fig. 6 is a schematic structural diagram of the embodiment of the present invention after the step of "backfilling gravel" is completed;
FIG. 7 is a schematic structural view of the diaphragm wall after the step of diaphragm wall construction is completed;
fig. 8 is a schematic structural view after the step of constructing the pull rod and the purlin of the embodiment of the present invention is completed;
fig. 9 is a schematic structural diagram of the embodiment of the present invention after the "backfilling gravel" step is completed;
fig. 10 is a partial enlarged view of fig. 1 according to an embodiment of the present invention;
fig. 11 is a partially enlarged view of a bent portion of fig. 1 according to an embodiment of the present invention;
fig. 12 is a schematic structural view of a tripod steel sheet pile according to an embodiment of the present invention;
reference numerals:
the concrete pile comprises a first pile wall 1, a second pile wall 2, a bent part 3, a third pile wall 4, a pull rod 5, an impervious wall 6, a filler 7, a riprap 8, a surrounding purlin 9, a three-leg steel sheet pile 10, a first leg 11, a second leg 12, a third leg 13, a groove 14, a reinforcing channel steel 15 and a construction site 16.
Detailed Description
This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
Referring to fig. 1 to 12, the double-row steel sheet pile diaphragm wall cofferdam includes:
the pile wall comprises a first pile wall 1, wherein the first pile wall 1 comprises a plurality of steel sheet piles, and the steel sheet piles are arranged side by side to form the first pile wall 1;
the second pile wall 2 is characterized in that the second pile wall 2 comprises a plurality of steel sheet piles, and the steel sheet piles are arranged side by side to be connected into the second pile wall 2;
the filler 7 is filled between the first pile wall 1 and the second pile wall 2;
one end of each pull rod 5 is connected with an enclosing purlin 9 outside the first pile wall 1, and the other end of each pull rod 5 is connected with an enclosing purlin 9 outside the second pile wall 2;
the anti-seepage wall 6 is arranged between the first pile wall 1 and the second pile wall 2, the anti-seepage wall 6 is buried in the filler 7, and the anti-seepage wall 6 is made of concrete.
The double-row steel sheet pile diaphragm wall cofferdam at least has the following beneficial effects:
the first pile wall 1 and the second pile wall 2 are formed by connecting steel sheet piles, so that the required cofferdam shape can be formed flexibly; the filler 7 and the impervious wall 6 are arranged between the first pile wall 1 and the second pile wall 2, so that the anti-seepage effect is good, and the filler 7 and the concrete are easy to obtain.
With respect to the first pile wall 1 and the second pile wall 2, the first pile wall 1 and the second pile wall 2 are formed by connecting steel sheet piles according to the prior art. The cross section of the steel sheet pile is U-shaped, and the two side edges of the steel sheet pile are respectively provided with a groove 14 for lap joint, so that the steel sheet piles can be flexibly lapped to form the required shape of the cofferdam.
As for the filler 7, the filler 7 may be selected from, but not limited to, grit. It is contemplated that the filler 7 may alternatively be, but not limited to, crushed stone, soil, or the like.
With regard to the tie rod 5, one end of the tie rod 5 penetrates the first pile wall 1 and is anchored on the purlin 9 outside the first pile wall and the other end penetrates the second pile wall 2 and is anchored on the purlin 9 outside the second pile wall. The pull rod 5 can maintain the relative position between the first pile wall 1 and the second pile wall 2, so that the structure of the cofferdam is more stable and reliable. The material of the pull rod 5 can be selected from but not limited to steel bars.
Regarding the impervious wall 6, the impervious wall 6 is made of concrete, so that the material is convenient to obtain, and the impervious wall is easy to form in the filler 7. The concrete cutoff wall 6 can be constructed by a high-pressure jet grouting technology, can flexibly adapt to the structure of the cofferdam and can be quickly formed.
In a possible embodiment, the double-row steel sheet pile diaphragm wall cofferdam further comprises a plurality of three-leg steel sheet piles 10, the three-leg steel sheet piles 10 are provided with first legs 11, second legs 12 and third legs 13, the first legs 11, the second legs 12 and the third legs 13 are respectively provided with grooves 14, and the first legs 11, the second legs 12 or the third legs 13 are respectively overlapped with the steel sheet piles and connected into the first pile wall 1 or the second pile wall 2. The three-legged steel sheet pile 10 can change the angle at which the pile wall extends, enabling the pile wall to be arranged in a wider variety of shapes.
In a possible embodiment, the first leg 11 and the second leg 12 are integral, and the third leg 13 is fixedly connected to the first leg 11 and the second leg 12 by welding. The third leg 13 is fixed by welding, so that the three-leg steel sheet pile 10 is easy to manufacture.
With respect to the three-legged steel sheet pile 10, the three-legged steel sheet pile 10 may be modified from a conventional steel sheet pile. The three-legged steel sheet pile 10 can be formed by cutting a common steel sheet pile into two halves, taking one half as the third leg 13, and welding a complete common steel sheet pile and the third leg 13 together as shown in fig. 12.
In a possible embodiment, a plurality of bending parts 3 are further provided on the first pile wall 1 and/or the second pile wall 2, and a plurality of three-legged steel sheet piles 10 are provided at the bending parts 3. The three-leg steel sheet pile 10 can make the first pile wall 1 or the second pile wall 2 extend in a bending way at the bending part 3, which is beneficial to forming the cofferdam with the required shape.
Regarding the bent portion 3, the bent portion 3 may be bent in a direction close to the cutoff wall 6, or may be bent in a direction away from the cutoff wall 6. When the bending angle of the bending part 3 is larger, the bending with larger angle can be realized by increasing the number of the three-legged steel sheet piles 10. As shown in fig. 11, two three-legged steel sheet piles 10 are used in the bent portion 3. When the bending angle is larger, it can be realized by increasing the number of the tripod steel sheet piles 10.
In a possible embodiment, the double-row steel sheet pile diaphragm wall cofferdam further comprises a third pile wall 4, wherein one end of the third pile wall 4 is connected with the first pile wall 1, and the other end is connected with the second pile wall 2. The third pile wall 4 can further enhance the seepage-proofing performance of the double-row steel sheet pile seepage-proofing wall cofferdam and enhance the structural strength.
Regarding the third pile wall 4, the end of the third pile wall 4 is connected to the first pile wall 1 or the second pile wall 2 through a tripod steel sheet pile 10. As shown in fig. 1, a third pile wall 4 may be provided near the bent portions 3 of the first and second pile walls 1 and 2, thereby enhancing structural strength and waterproof performance.
In a possible implementation mode, the double-row steel sheet pile diaphragm wall cofferdam further comprises a plurality of surrounding purlins 9, the surrounding purlins 9 are arranged on the outer sides of the first pile wall 1 and the second pile wall 2, and each steel sheet pile in the first pile wall 1 and the second pile wall 2 is fixedly connected with the surrounding purlin 9. Purlin 9 can strengthen the structural strength of first pile wall 1 and second pile wall 2.
Regarding the surrounding purlin 9, the material of the surrounding purlin 9 can be selected from but not limited to channel steel.
In a possible embodiment, the double-row steel sheet pile diaphragm wall cofferdam further comprises a riprap 8, and the riprap 8 is stacked at the root parts of the first pile wall 1 and the second pile wall 2. The riprap 8 can strengthen the structural stability of the double-row steel sheet pile diaphragm wall cofferdam.
The double-row steel sheet pile diaphragm wall cofferdam construction method comprises the following steps:
filling the filler 7, wherein the filler 7 is gravel, so that the gravel is piled on the construction site 16;
driving steel sheet piles, namely driving a plurality of steel sheet piles in the gravel and connecting the steel sheet piles into a first pile wall 1 and a second pile wall 2, wherein the tops of the first pile wall 1 and the second pile wall 2 are higher than the gravel;
the riprap slope protection is realized, and riprap 8 is accumulated at the roots of the first pile wall 1 and the second pile wall 2;
backfilling gravel, and filling gravel between the first pile wall 1 and the second pile wall 2;
constructing the impervious wall 6, and forming the impervious wall 6 in gravel by a high-pressure rotary spraying method;
the pull rod 5 and the surrounding purlin 9 are constructed, the pull rod 5 is arranged between the first pile wall 1 and the second pile wall 2, one section end of the pull rod 5 is connected with the surrounding purlin 9 outside the first pile wall 1, the other end of the pull rod is connected with the surrounding purlin 9 outside the second pile wall 2, the surrounding purlin 9 is arranged outside the first pile wall 1 and the second pile wall 2, and the steel plate pile is connected with the surrounding purlin 9.
Regarding the double-row steel sheet pile diaphragm wall cofferdam construction method, the structural schematic diagram after the step of filling gravel is completed is shown in fig. 2, the structural schematic diagram after the step of driving steel sheet piles is completed is shown in fig. 3, the structural schematic diagram after the step of throwing stone and protecting slope is completed is shown in fig. 4, the structural schematic diagram after the step of placing reinforcing steel channels is shown in fig. 5, the structural schematic diagram after the step of refilling gravel is completed is shown in fig. 6, the structural schematic diagram after the step of constructing diaphragm wall 6 is shown in fig. 7, the structural schematic diagram after the step of constructing pull rod 5 and purlin 9 is completed is shown in fig. 8, and the structural schematic diagram after the step of refilling gravel again is shown in fig. 9.
In a possible embodiment, after the step of steel sheet piling, a reinforcing channel is placed between the first pile wall 1 and the second pile wall 2, with one end of the reinforcing channel connected to the first pile wall 1 and the other end connected to the second pile wall 2, with gravel covering the reinforcing channel during the step of backfilling gravel. Strengthen the structural stability that the channel-section steel can strengthen between first pile wall 1 and the second pile wall 2, be favorable to preventing that first pile wall 1 and second pile wall 2 from taking place the offset at the in-process of backfilling gravel.
In a possible embodiment, after the step of constructing the tie rods 5 and the purlins 9, gravel is backfilled between the first pile wall 1 and the second pile wall 2 again, so that the gravel covers the tie rods 5 and fills the space between the first pile wall 1 and the second pile wall 2. Backfilling gravel again enables the gravel to cover the tie rod 5, which is beneficial for protecting the tie rod 5.
The dam construction method of the double-row steel sheet pile impervious wall comprises the following overall construction steps of:
primary cofferdam filling, steel sheet pile driving, stone throwing and slope protection, secondary backfilling medium coarse sand, high-pressure rotary spraying concrete impervious wall 6, purlin enclosing 9 construction, pull rod 5 construction, and backfilling the medium coarse sand to the top of the weir. The method comprises the following specific steps:
step 1, primary cofferdam filling
The cofferdam filling material is medium coarse sand, the self-dumping truck transports the material to the site to unload at the front edge (1-2 m away from the end point) of the filling working surface, the material is paved by adopting an occupancy method, and the unloading height is controlled within 1.5m so as to prevent the separation of particles. And filling and backfilling the primary cofferdam to 0.5m above the construction water level, namely the site absolute elevation is 310.00m, and providing a piling construction working platform.
The double-row steel sheet pile adopts an SPU-IV400 multiplied by 170L (standard pile) 6m/9m/12m pile and an SPU-IVw600 multiplied by 210L (standard pile) 15m/18m pile, and the total length is 178 m.
According to the field construction conditions, the engineering steel sheet pile is driven by a Kate Q349 pile driver, the overall sequence of the steel sheet pile driving construction is divided into inner row construction and outer row construction, and the construction is started from the outer row from one end of the cofferdam.
According to the plane size of the cofferdam, two positioning piles are constructed on the outer edge line of the cofferdam, and two H-shaped steel is welded on the positioning piles to serve as a guide frame for steel sheet pile construction. The positioning clamp is used for ensuring accurate positioning in the construction process, the position and the verticality of the steel sheet pile need to be checked repeatedly in the construction process, the elevation of the bottom of the steel sheet pile is not less than 0.5m deep into a rock base, and the steel sheet piles are driven one by one on the premise of ensuring the accuracy of the plane and the elevation of the steel sheet pile.
And (3) performing grid throwing by sectionally segmenting a stone throwing boat, and temporarily reinforcing the two rows of steel plate piles by using channel steel at the elevation position of the piling operation platform after the steel plate piles are constructed. And pumping sand from the backfill sand outside the steel sheet pile by a sand pumping ship according to a section of 10 meters, throwing the rock along with the pumped sand, transporting the rock blocks to a construction site throwing water area range by a rock throwing ship according to the conditions of a construction site, throwing by a long-arm excavator, carrying out throwing command by dedicated constructors, and simultaneously carrying out safe construction. If the riprap cannot follow the sand pumping speed, the sand pumping should be suspended so as to prevent the deformation of the outer side of the steel sheet pile due to long-time air blowing. And monitoring the displacement condition of the steel sheet pile at any time in the sand pumping and stone throwing processes. And (3) from the reservoir to the bank, each section of the riprap is firstly subjected to foot-to-slope construction, but the section where the collapse is fast after sand pumping is preferably subjected to continuous construction and assault construction from near to far.
After the stone throwing is finished, the stress on the two sides of the steel sheet piles is stabilized, the temporary reinforcing channel steel 15 between the two rows of steel sheet piles is removed, and the top of the medium-coarse sand and high-spraying concrete impervious wall 6 is backfilled between the two rows of steel sheet piles.
The high-pressure jet grouting concrete impervious wall 6 adopts a three-pipe jet grouting wall forming technology, and the lap joint thickness of the impervious wall 6 is not less than 0.3 m. The hole spacing is 1.0m, the depth of the impervious wall 6 entering the completely weathered rock is 0.5m, the compressive strength of the wall is more than 3.0Mpa, and the permeability coefficient is less than 5 multiplied by 10 < -6 > cm/s. The cut-off walls 6 are arranged in a row along the centre line of the cofferdam.
And 3 test piles are carried out before formal construction of the jet grouting piles, and the required guniting amount is calculated according to the test pile parameters so as to determine the using amount of cement.
The construction of rotary spraying method is that after a grouting pipe with special nozzle is drilled to a preset position of stratum by a drilling machine, a high-pressure pulse pump is used to make cement slurry pass through a spraying device at the lower end of a drill rod and spray soil around horizontally at high speed, and the soil layer is cut by means of impact force of fluid, so that the soil body in the spraying range is damaged, at the same time, the drill rod rotates at a certain speed and slowly lifts at a low speed, the soil body and cement slurry are fully stirred and mixed, after cementation and hardening, a pile body with uniform diameter and certain strength is formed in the foundation, and thus the stratum is reinforced.
The enclosing purlin 9 is arranged along the whole length of the outer side of the steel sheet pile wall, and the elevation is arranged at a position 0.50m below the top of the steel sheet pile. The purlin 9 adopts double-spliced 32a channel steel. And marking on the steel sheet pile according to the elevation of the positioning surrounding purlin 9. Welding encloses purlin 9 bracket, and after the bracket welding was accomplished, utilize the pile driver will enclose purlin 9 and hang on putting to the bracket, connect into whole with every section purlin 9 simultaneously.
The steel sheet pile height mark corresponding to the pull rod 5 is provided with a hole, the pull rod 5 penetrates through the surrounding purlin 9 outside the steel sheet pile on one side, the surrounding purlin 9 outside the steel sheet pile on the other side penetrates out, and the two sides of the pull rod 5 are locked by nuts.
7, backfilling coarse sand to the top of the weir
And after the construction of the purlin 9 and the pull rod 5 is completed, backfilling coarse sand between the two rows of steel sheet piles to the elevation of the pile top.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (7)
1. Double steel sheet pile cut-off wall cofferdam, its characterized in that includes:
the first pile wall comprises a plurality of steel sheet piles, and the steel sheet piles are arranged side by side and connected to form the first pile wall;
the second pile wall comprises a plurality of steel sheet piles, and the steel sheet piles are arranged side by side and connected into the second pile wall;
a filler filled between the first pile wall and the second pile wall;
one end of each pull rod is connected with the first pile wall, and the other end of each pull rod is connected with the second pile wall;
the anti-seepage wall is arranged between the first pile wall and the second pile wall, the anti-seepage wall is buried in the filler, and the anti-seepage wall is made of concrete.
2. The double-row steel sheet pile diaphragm wall cofferdam of claim 1, characterized in that: the double-row steel sheet pile diaphragm wall cofferdam further comprises a plurality of three-leg steel sheet piles, wherein the three-leg steel sheet piles are provided with first legs, second legs and third legs, the first legs, the second legs and the third legs are respectively provided with grooves, and the first legs, the second legs or the third legs are respectively lapped with the steel sheet piles and connected into the first pile wall or the second pile wall.
3. The double-row steel sheet pile diaphragm wall cofferdam of claim 2, characterized in that: the first foot and the second foot are integrated, and the third foot is fixedly connected with the first foot and the second foot through welding.
4. The double-row steel sheet pile diaphragm wall cofferdam of claim 2, characterized in that: the first pile wall and/or the second pile wall are/is also provided with a plurality of bending parts, and the bending parts are provided with a plurality of three-legged steel plate piles.
5. The double-row steel sheet pile diaphragm wall cofferdam of any one of claims 1 to 4, characterized in that: the double-row steel sheet pile diaphragm wall cofferdam further comprises a third pile wall, wherein one end of the third pile wall is connected with the first pile wall, and the other end of the third pile wall is connected with the second pile wall.
6. The double-row steel sheet pile diaphragm wall cofferdam of any one of claims 1 to 4, characterized in that: the double-row steel sheet pile diaphragm wall cofferdam further comprises a plurality of surrounding purlins, the surrounding purlins are arranged on the outer sides of the first pile wall and the second pile wall, and each steel sheet pile in the first pile wall and the second pile wall is fixedly connected with the surrounding purlins.
7. The double-row steel sheet pile diaphragm wall cofferdam of any one of claims 1 to 4, characterized in that: the double-row steel sheet pile diaphragm wall cofferdam further comprises riprap, and the riprap is stacked at the roots of the first pile wall and the second pile wall.
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| CN202022996219.5U CN214245784U (en) | 2020-12-11 | 2020-12-11 | Double-row steel sheet pile diaphragm wall cofferdam |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114351769A (en) * | 2022-02-15 | 2022-04-15 | 水利部交通运输部国家能源局南京水利科学研究院 | Scouring-prevention low-consumption grouting curtain for offshore wind power cylindrical foundation and construction method |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114351769A (en) * | 2022-02-15 | 2022-04-15 | 水利部交通运输部国家能源局南京水利科学研究院 | Scouring-prevention low-consumption grouting curtain for offshore wind power cylindrical foundation and construction method |
| CN114351769B (en) * | 2022-02-15 | 2022-08-26 | 水利部交通运输部国家能源局南京水利科学研究院 | Scouring-prevention low-consumption grouting curtain for offshore wind power cylindrical foundation and construction method |
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