CN212835453U

CN212835453U - Cofferdam for hydraulic engineering

Info

Publication number: CN212835453U
Application number: CN202021177430.8U
Authority: CN
Inventors: 陆国忠; 杨永富; 杨海峰
Original assignee: Shanghai River Construction Co ltd
Current assignee: Shanghai River Construction Co ltd
Priority date: 2020-06-22
Filing date: 2020-06-22
Publication date: 2021-03-30
Anticipated expiration: 2030-06-22

Abstract

The utility model relates to a cofferdam for hydraulic engineering, including outer wall and interior wall, there is the interval between outer wall surrounds and outer wall and the interior wall the outer wall, and outer wall and interior wall can be dismantled by the steel sheet pile of the vertical setting of polylith and connect and form, and the relative inside wall fixed surface of outer wall and interior wall is connected with geotechnological cloth, and regional packing between the two-layer geotechnological cloth has the earth stone, and this application has the effect that improves the anti rivers scouring ability of cofferdam.

Description

Cofferdam for hydraulic engineering

Technical Field

The application relates to the field of water conservancy buildings, in particular to a cofferdam for hydraulic engineering.

Background

The cofferdam is a temporary enclosure structure constructed for building water conservancy facilities in the water conservancy project construction, has the function of preventing water and soil from entering the construction position of a building so as to facilitate drainage in the cofferdam, excavation of a foundation pit and construction of the building, is generally mainly used in the water conservancy project construction, and is generally dismantled after being used up except being used as a part of a formal building. The cofferdam height is higher than the highest water level that may occur during construction.

The cofferdam which is widely applied at present is the earth-rock cofferdam, the earth-rock cofferdam can be built by fully utilizing the earth-rock material at the place of the hydraulic engineering, in addition, the construction of the earth-rock cofferdam is simple, so the construction process is simple and has stronger adaptability, the earth-rock cofferdam can be built under different geology and water temperature environments, and the operation cost is lower.

In view of the above-mentioned related technologies, the applicant believes that the earth-rock cofferdam is made of earth-rock materials, and as the service life of the earth-rock cofferdam is prolonged, the earth-rock of the earth-rock cofferdam becomes thinner gradually under the washing of water flow, so that the earth-rock cofferdam has the problem of low water flow washing resistance.

SUMMERY OF THE UTILITY MODEL

In order to improve the problem that anti water current scouring ability is low, this application provides a cofferdam for hydraulic engineering.

The application provides a cofferdam for hydraulic engineering adopts following technical scheme: the utility model provides a cofferdam for hydraulic engineering, includes outer wall and interior wall, and the outer wall surrounds and has the interval between outer wall and the interior wall, and outer wall and interior wall can be dismantled by the steel sheet pile of the vertical setting of polylith and connect and form, and the relative inside wall fixed surface of outer wall and interior wall is connected with geotechnological cloth, and regional packing between the two-layer geotechnological cloth has the earth stone.

Through adopting above-mentioned technical scheme, there is the interval between outer wall and the interior wall that the steel sheet pile encloses, can pack soil stone or concrete in the interval, and steel sheet pile and geotechnological cloth can play the cushioning effect to washing away of rivers, make cofferdam for hydraulic engineering reach the effect of higher anti water current scouring ability.

Preferably, the steel sheet pile includes stake and connecting pile, and the stake is located outer wall and interior wall side, and the connecting pile is located outer wall and interior wall corner, and the connecting pile both sides can be dismantled with the stake respectively and be connected.

By adopting the technical scheme, the wall body of the outer wall and the inner wall can be enclosed by the vertical piles and the connecting piles, and the vertical piles and the connecting piles can be freely combined according to the size and the shape of the hydraulic engineering construction range.

Preferably, the clamping block is fixedly connected to one side of the vertical pile, a clamping groove is formed in one side, back to the other side of the vertical pile, of the clamping block, for clamping the adjacent vertical pile or the connecting pile, and the clamping block and the clamping groove are in sliding fit.

Through adopting above-mentioned technical scheme, can link together through agreeing with in joint piece and joint groove between the adjacent stake or the connecting pile, the joint piece can make things convenient for installation and dismantlement between a plurality of steel sheet piles with the design in joint groove, has reached the effect that improves cofferdam construction speed for hydraulic engineering.

Preferably, the connecting pile is the form of buckling, connecting pile one end lateral wall fixedly connected with joint piece, the joint groove that the joint piece card that supplies adjacent stake was gone into is seted up to connecting pile and joint piece place lateral wall vertically one side.

Through adopting above-mentioned technical scheme, the connecting pile can link together through the agree with in joint piece and joint groove rather than adjacent grudging post, and the connecting pile plays and links together interior wall or outer wall side, encloses into the effect of closed area jointly.

Preferably, the position of the upper surface of the vertical pile, which is close to the side wall, is provided with a vertical downward limiting groove, and the limiting grooves of the two vertical piles corresponding to the outer wall and the inner wall are detachably connected with the same limiting rod.

Through adopting above-mentioned technical scheme, accessible gag lever post is together fixed between outer wall and the interior wall, and when the interval between outside wall and the interior wall was filled earth and stones, the gag lever post can play stable effect to interior wall and the corresponding steel sheet pile of outer wall to reach and prevent that the steel sheet pile from receiving the extrusion force of earth and stones and taking place the effect of slope.

Preferably, one surface, close to the water bottom, of the steel sheet pile is fixedly connected with a supporting leg, the supporting leg is perpendicular to the lower bottom surface of the steel sheet, and one end, far away from the steel sheet pile, of the supporting leg is conical.

Through adopting above-mentioned technical scheme, when installation steel sheet pile, can insert the bottom with the supporting legs, supporting legs one end sets up the resistance that receives when reducible supporting legs of coniform insert the bottom, and the supporting legs inserts the stability of submarine multiplicable steel sheet pile in aqueous.

Preferably, one side of the inner wall, which is far away from the outer wall, is detachably connected with a bracing beam, the bracing beam is provided with two and mutually perpendicular, two ends of the bracing beam are respectively and fixedly connected with a connecting disc, and the connecting discs and the vertical piles are in threaded connection with bolts.

By adopting the technical scheme, when the inner wall closed area is pumped or soil and stones are filled into the space between the inner wall and the outer wall, the supporting beam can support the inner wall, so that the inner wall is prevented from inclining and collapsing caused by water pressure or the pressure of the soil and stones; the connecting disc passes through bolt threaded connection with the stake, can make things convenient for a supporting beam's installation and dismantlement.

Preferably, an inclined supporting beam is arranged between adjacent inner side walls of the inner wall, connecting discs are fixedly connected to two ends of the inclined supporting beam respectively, opposite threaded holes are formed in the connecting discs and the surfaces of the vertical piles corresponding to the connecting discs respectively, and bolts are connected to the threaded holes formed in the connecting discs and the vertical piles in a threaded mode.

Through adopting above-mentioned technical scheme, the bracing beam can play the supporting role to the structure of adjacent interior wall lateral wall, and connection pad passes through bolt threaded connection with the grudging post, can make things convenient for the installation and the dismantlement of bracing beam.

In summary, the present application includes at least one of the following beneficial technical effects:

1. by arranging the outer wall and the inner wall, fixedly connecting the geotechnical cloth on the side wall of the inner wall opposite to the outer wall, and filling earth and stones between the geotechnical cloth, the capability of increasing the water flow scouring resistance of the cofferdam is achieved;

2. the supporting legs are arranged on the lower bottom surface of the steel sheet pile, so that the effect of fixing the steel sheet pile in water more stably is achieved when the steel sheet pile is installed;

3. through the lateral wall fixed connection joint piece at the steel sheet pile, the joint groove has been seted up to the lateral wall relative with the joint piece, has reached in cofferdam work progress for hydraulic engineering, convenient installation and the effect of dismantling the steel sheet pile.

Drawings

Fig. 1 is a schematic structural view of a cofferdam for hydraulic engineering;

FIG. 2 is a schematic structural view of a stake in an embodiment of the present application;

FIG. 3 is a partial top view intended to reveal a gag lever post and a connecting disc;

FIG. 4 is a schematic structural view of a connecting pile in the embodiment of the present application;

fig. 5 is an enlarged view of a portion a in fig. 1.

Description of reference numerals: 1. an outer wall; 2. an inner wall; 3. steel sheet piles; 31. erecting a pile; 32. connecting piles; 41. a clamping block; 42. a clamping groove; 51. a limiting rod; 52. a limiting groove; 6. supporting legs; 7. geotextile; 8. a support mechanism; 81. oppositely supporting the beams; 82. a diagonal bracing beam; 811. a connecting disc; 812. a threaded hole; 813. and (4) bolts.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

Referring to fig. 1, the cofferdam for the hydraulic engineering comprises an outer wall 1 and an inner wall 2, wherein the outer wall 1 and the inner wall 2 are rectangular, the inner wall 2 encloses a closed area, the outer wall 1 encloses the inner wall 2, an interval exists between the inner wall 2 and the outer wall 1, earth and stones can be filled in the interval, a supporting mechanism 8 is connected between the inner side walls of the inner wall 2, and the supporting mechanism 8 can play a role in supporting and stabilizing the inner wall 2; a limiting rod 51 is arranged between the inner wall 2 and the outer wall 1, the limiting rod 51 is detachably connected with the outer wall 1 and the inner wall 2, the limiting rod 51 can stabilize the relative position between the inner wall 2 and the outer wall 1, and when earth and stones are filled in, the limiting rod 51 can prevent the inner wall 2 and the outer wall 1 from inclining towards opposite directions; supporting legs 6 are fixedly connected to the bottom surfaces of the inner wall 2 and the outer wall 1, one ends, far away from the bottom surface of the inner wall, of the supporting legs 6 are arranged to be conical, the supporting legs 6 can be vertically inserted into the water bottom to fix the steel sheet piles 3, and the water flow scouring resistance of the cofferdam for hydraulic engineering is improved.

Referring to fig. 1, the steel sheet piles 3 include vertical piles 31 at the sides of the inner wall 2 and the outer wall 1, and the steel sheet piles 3 further include connection piles 32 at the corners of the inner wall 2 and the outer wall 1.

Referring to fig. 2, the central line of the side wall of the stud 31 is fixedly connected with a clamping block 41, the vertical height of the clamping block 41 is consistent with the height of the stud 31, the bottom surface of the clamping block 41 is trapezoidal, and the side wall of the shorter side of the bottom surface of the clamping block 41 is fixedly attached to the stud 31; the position of the side wall center line of the vertical pile 31 departing from the clamping block 41 is provided with a clamping groove 42, the clamping groove 42 penetrates through the upper surface and the lower surface of the vertical pile 31, the shape of the clamping groove 42 is matched with that of the clamping block 41, and the clamping block 41 of the vertical pile 31 can slide in the clamping groove 42 of the adjacent vertical pile 31 along the vertical direction.

Referring to fig. 2 and 3, a limiting groove 52 is provided at a position, close to the side wall, of the upper surface of the stud 31, the height of the limiting groove 52 in the vertical direction is smaller than that of the stud 31, the limiting groove 52 is formed in a step shape, the cross section of the limiting groove 52 in the vertical direction is sequentially increased along the direction in which the opposite studs 31 deviate from each other, the same limiting rod 51 is detachably connected in the limiting groove 52, which is opposite to the outer wall 1, of the inner wall 2, the shape of the limiting rod 51 is matched with that of the limiting groove 52, the limiting rod 51 can slide in the vertical direction along the limiting groove 52, and in the construction process of the cofferdam for hydraulic engineering, the connection of the limiting rod 51 and the limiting groove 52 plays a role in stabilizing the relative position of the inner wall 2 and.

Referring to fig. 3, the geotextile 7 is arranged on the opposite side wall surfaces of the inner wall 2 and the outer wall 1, before the steel sheet pile 3 is inserted into water, the geotextile 7 is fixedly bonded on the side wall surface of the steel sheet pile 3 by using a hot air gun, soil and stones can be filled between the geotextile 7 on the two sides, the geotextile 7 can play a role in buffering water flow seeping from the joint of the clamping groove 42 and the clamping block 41, and the scouring effect of the water flow on the soil and stones is reduced.

Referring to fig. 4, the shape of connecting pile 32 is the form of buckling, and the one end lateral wall fixedly connected with joint piece 41 of connecting pile 32, joint groove 42 has been seted up to the lateral wall that connecting pile 32 deviates from joint piece 41, and joint piece 41 on the connecting pile 32 can slide along vertical direction in the joint groove 42 of adjacent grudging post 31, and in the work progress in cofferdam for hydraulic engineering, connecting pile 32 joinable is located the grudging post 31 of interior wall 2 and outer wall 1 side, reaches the effect of enclosing closed area jointly with grudging post 31.

Referring to fig. 1 and 3, the supporting mechanism 8 comprises an inclined supporting beam 82, connecting discs 811 are fixedly connected to two ends of the inclined supporting beam 82, a plurality of bolts 813 arranged in a circumferential array are in threaded connection with the connecting discs 811 and the position opposite to the connecting discs 811, the angle between the inclined supporting beam 82 and the opposite connecting discs 811 is 45 degrees, when the inclined supporting beam 82 is installed, the connecting discs 811 and the vertical piles 31 which are opposite to each other can be fixed through the bolts 813, and when the cofferdam for hydraulic engineering is constructed, the inclined supporting beam 82 can play a role in connecting and fixing the adjacent inner walls 2 to prevent the adjacent inner walls from deforming.

Referring to fig. 1 and 5, the supporting mechanism 8 further includes two pairs of supporting beams 81, the two pairs of supporting beams 81 are perpendicular to each other, connecting discs 811 are fixedly connected to two ends of the supporting beams 81, a plurality of bolts 813 arranged in a circumferential array are in threaded connection with the connecting discs 811 and positions corresponding to the connecting discs 811, when the pair of supporting beams 81 are installed, the connecting discs 811 and the vertical piles 31 can be fixed through the bolts 813, and in the construction process of the cofferdam for hydraulic engineering, the supporting beams 81 can support the inner wall 2, so that the stability of the inner wall 2 is improved.

The application principle of the cofferdam for the hydraulic engineering is as follows: when a cofferdam for hydraulic engineering needs to be built, firstly, the vertical piles 31 and the connecting piles 32 are connected and fixed with the clamping blocks 41 through the clamping grooves 42, then, the geotextile 7 is fixedly bonded on the opposite side walls of the inner wall 2 and the outer wall 1 by using the hot air blower, next, the inner wall 2 and the outer wall 1 are vertically and downwards placed into water, and in the process that the inner wall 2 and the outer wall 1 enter the water, the supporting legs 6 are in contact with the water bottom and are gradually inserted into soil at the water bottom to fix the steel sheet piles 3; after the inner wall 2 and the outer wall 1 are built, the supporting mechanism 8 is installed between the inner wall 2 to ensure the stability of the inner wall 2, the limiting rods 51 are inserted between the limiting grooves 52 of the inner wall 2 and the outer wall 1 to stabilize the relative positions of the inner wall 2 and the outer wall 1, water at intervals between the inner wall 2 and the outer wall 1 is pumped out and filled with earth stones, after the earth stones are filled, water in the area surrounded by the inner wall 2 can be cleaned by the water pump, and the building process of the cofferdam for hydraulic engineering is completed at the moment.

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

1. The utility model provides a cofferdam for hydraulic engineering, a serial communication port, including outer wall (1) and interior wall (2), there is the interval between outer wall (1) surrounds interior wall (2) and outer wall (1) and interior wall (2), can dismantle by steel sheet pile (3) of the vertical setting of polylith outer wall (1) and interior wall (2) and connect and form, the inside wall fixed surface that outer wall (1) and interior wall (2) are relative is connected with geotechnological cloth (7), regional packing between two-layer geotechnological cloth (7) has the earth stone.

2. The cofferdam for hydraulic engineering according to claim 1, characterized in that: the steel sheet pile (3) comprises a vertical pile (31) and a connecting pile (32), the vertical pile (31) is located on the side of the outer wall (1) and the side of the inner wall (2), the connecting pile (32) is located at the corner of the outer wall (1) and the corner of the inner wall (2), and two sides of the connecting pile (32) are detachably connected with the vertical pile (31) respectively.

3. The cofferdam for hydraulic engineering according to claim 2, characterized in that: stake (31) one side fixedly connected with joint piece (41), joint groove (42) that joint piece (41) that confession adjacent stake (31) or connecting pile (32) were gone into are seted up to stake (31) and joint piece (41) one side of carrying on the back mutually, are sliding fit between joint piece (41) and joint groove (42).

4. The cofferdam for hydraulic engineering according to claim 2, characterized in that: the connecting pile (32) is the form of buckling, connects stake (32) one end lateral wall fixedly connected with joint piece (41), joint groove (42) that joint piece (41) card of confession adjacent stud (31) was gone into are seted up to connecting pile (32) and joint piece (41) place lateral wall vertically one side.

5. The cofferdam for hydraulic engineering according to claim 2, characterized in that: vertical downward limiting grooves (52) are formed in the positions, close to the side walls, of the upper surfaces of the vertical piles (31), and the limiting grooves (52) of the two vertical piles (31) corresponding to the outer wall (1) and the inner wall (2) are detachably connected with the same limiting rod (51).

6. The cofferdam for hydraulic engineering according to claim 1, characterized in that: one surface, close to the water bottom, of the steel plate pile (3) is fixedly connected with supporting legs (6), the supporting legs (6) are perpendicular to the lower bottom surface of the steel plate, and one ends, far away from the steel plate pile (3), of the supporting legs (6) are arranged to be conical.

7. The cofferdam for hydraulic engineering according to claim 1, characterized in that: one side of the inner wall (2) deviating from the outer wall (1) is detachably connected with a bracing beam (81), the bracing beam (81) is provided with two and mutually perpendicular, two ends of the bracing beam (81) are respectively and fixedly connected with connecting discs (811), and the connecting discs (811) are in threaded connection with the vertical piles (31) through bolts (813).

8. The cofferdam for hydraulic engineering according to claim 1, characterized in that: be provided with bracing beam (82) between the adjacent inside wall of interior wall (2), both ends difference fixedly connected with connection pad (811) of bracing beam (82), just right screw hole (812) have been seted up respectively to connection pad (811) and stud (31) surface that corresponds with connection pad (811), and screw hole (812) threaded connection who sets up in connection pad (811) and stud (31) has bolt (813).