CN213571999U - Steel cofferdam of half unsettled back cover concrete adhesion of reinforcing - Google Patents
Steel cofferdam of half unsettled back cover concrete adhesion of reinforcing Download PDFInfo
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- CN213571999U CN213571999U CN202022142376.XU CN202022142376U CN213571999U CN 213571999 U CN213571999 U CN 213571999U CN 202022142376 U CN202022142376 U CN 202022142376U CN 213571999 U CN213571999 U CN 213571999U
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Abstract
The utility model relates to a steel cofferdam of half unsettled back cover concrete adhesion of reinforcing belongs to cofferdam construction technical field, include: the steel cofferdam is arranged around the peripheries of the steel pile casings inserted into the soil, and the bottom of the steel cofferdam sinks below the river bed surface; the shearing resistant devices are fixedly connected to the periphery of the inner wall of the steel cofferdam and are respectively and fixedly connected with the steel casing close to the steel cofferdam; and the bottom sealing concrete is poured at the bottom of the steel cofferdam, and the shear resistant device is embedded in the bottom sealing concrete. This application links into a whole through shear device with steel cofferdam and steel pile casing, and back cover concrete placement hardens and links into an organic whole with steel pile casing, shear device and steel pile casing, is showing the adhesion force that increases between back cover concrete and the steel cofferdam lateral wall.
Description
Technical Field
The application relates to the technical field of cofferdam construction, in particular to a steel cofferdam for enhancing the bonding force of semi-suspended bottom sealing concrete.
Background
The steel cofferdam in the bridge foundation construction is usually used as an underwater bearing platform construction water retaining structure. And pouring back cover concrete after the construction of the steel cofferdam is finished, pumping accumulated water in the cofferdam out after the back cover concrete forms 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, because the steel cofferdam and the bottom sealing concrete are different materials, a remarkable interface exists, when a riverbed is unstable, the bottom of the steel cofferdam is suspended due to water flow scouring, and the bonding force of the bottom sealing concrete and the steel cofferdam is difficult to keep balance. And the two have different temperature deformation coefficients, so that the bonding force between the two is uncertain, and a gap is easily formed between the side wall of the steel cofferdam and the bottom sealing concrete.
In the related art, in order to improve the bonding force between the side wall of the steel cofferdam and the bottom sealing concrete, the traditional method comprises the steps of throwing and filling a gabion or a sand bag to lift the river bed surface, increasing the height of the cofferdam, and adopting the modes of hanging box cofferdam and drilling and grouting. The river scouring enables the dumped gabions or sand bags to sink continuously, whether the river bed surface can be lifted is variable, the gaps among the stones are large, and the water blocking effect is poor. Increase cofferdam height and reduce cofferdam bottom elevation, lead to back cover concrete use amount to increase, steel and concrete material waste is big, and the handling capacity is big, and construction cycle increases.
The suspension box cofferdam needs to be provided with a bottom plate and a suspension system, not only is a temporary structure increased, but also the construction difficulty in water is increased, the construction period of the whole construction process is prolonged, and the construction cost is increased. The drilling mud jacking needs to survey the suspended part firstly, steel sheet piles are inserted and driven to surround and block water and backfill the upstream side of the cofferdam, sandbags or backfilling stones need to be thrown and filled on the back side, the mud jacking of the hollowed part of the sealing concrete needs manual underwater operation, and the mud jacking needs to adopt high-performance concrete to ensure the fluidity, so that the drilling mud jacking is difficult to operate, complex in process, high in construction difficulty, long in construction period and high in construction cost.
Disclosure of Invention
The embodiment of the application provides a steel cofferdam for enhancing the bonding force of semi-suspended bottom-sealing concrete, and aims to solve the problems of difficult operability, complex process, great construction difficulty, long construction period and construction cost of a construction method for improving the bonding force between the side wall of the steel cofferdam and the bottom-sealing concrete in the prior art.
The embodiment of the application provides a steel cofferdam of half unsettled back cover concrete adhesion of reinforcing includes:
the steel cofferdam is arranged around the steel pile casings inserted into soil, and the bottom of the steel cofferdam sinks below the river bed surface;
the shearing resistant devices are fixedly connected to the periphery of the inner wall of the steel cofferdam and are respectively and fixedly connected with the steel casing close to the steel cofferdam;
and the bottom sealing concrete is poured at the bottom of the steel cofferdam, and the shear resistant device is embedded in the bottom sealing concrete.
In some embodiments: the shearing resistant device comprises a lower cross bar and a first inclined bar, and the lower cross bar is fixedly connected between the steel cofferdam and the steel pile casing;
the first inclined rod is located above the lower cross rod, two ends of the first inclined rod are fixedly connected with the steel cofferdam and the lower cross rod respectively, and the first inclined rod, the lower cross rod and the steel cofferdam form a triangular structure.
In some embodiments: the shearing resistant device comprises an upper cross rod and a second inclined rod, and the upper cross rod is fixedly connected between the steel cofferdam and the steel pile casing;
the second diagonal rod is located below the upper cross rod, two ends of the second diagonal rod are fixedly connected with the steel cofferdam and the upper cross rod respectively, and the second diagonal rod, the upper cross rod and the steel cofferdam form a triangular structure.
In some embodiments: the shear resisting device comprises an upper cross bar, a lower cross bar, a first inclined bar and a second inclined bar, wherein the upper cross bar is positioned above the lower cross bar, and the upper cross bar and the lower cross bar are both fixedly connected between the steel cofferdam and the steel pile casing;
the first inclined rod and the second inclined rod are in X-shaped structures and are fixedly connected between the upper cross rod and the lower cross rod.
In some embodiments: the upper cross rod, the lower cross rod, the first inclined rod and the second inclined rod are any one or more of angle steel, square steel, channel steel and I-shaped steel.
In some embodiments: the steel cofferdam is a rectangular structure formed by splicing and enclosing a plurality of cofferdam wall plates.
In some embodiments: the cofferdam wall plate comprises an inner wall plate, an outer wall plate and a plurality of cabin separation plates which are longitudinally arranged and vertically connected with the inner wall plate and the outer wall plate;
the adjacent surfaces of the inner wall plate and the outer wall plate are provided with horizontal ring plates, a plurality of parallel-connection inclined rods connected with the horizontal ring plates are arranged between the inner wall plate and the outer wall plate, and each parallel-connection inclined rod and the cabin separation plate, the inner wall plate or the outer wall plate form a triangular structure.
In some embodiments: be equipped with the cofferdam internal stay in the steel cofferdam, the cofferdam internal stay includes stull and bracing, the stull is connected between the cofferdam wallboard that is parallel to each other, the bracing is connected between two mutually perpendicular's cofferdam wallboards.
In some embodiments: and the bottom of the steel cofferdam is provided with a blade foot sinking into a riverbed.
In some embodiments: and water stop steel belts embedded into the bottom sealing concrete are arranged around the inner wall of the steel cofferdam.
The beneficial effect that technical scheme that this application provided brought includes:
the embodiment of the application provides a steel cofferdam for enhancing the bonding force of semi-suspended bottom-sealing concrete, and the steel cofferdam is arranged at the periphery of a plurality of steel casing cylinders inserted into soil, and the bottom of the steel cofferdam sinks below the river bed surface; fixedly connecting a plurality of shear-resistant devices around the inner wall of the steel cofferdam, wherein the shear-resistant devices are respectively and fixedly connected with the steel casing close to the steel cofferdam; and pouring bottom sealing concrete at the bottom of the steel cofferdam, and embedding the shear resistant device in the bottom sealing concrete.
Therefore, the steel cofferdam of this application is through a plurality of shear devices of fixed connection all around at the steel cofferdam inner wall, and a plurality of shear devices respectively with be close steel pile casing fixed connection in the steel cofferdam, links into an organic whole with steel cofferdam and steel pile casing through the shear device, and back cover concrete pouring hardens the back and links into an organic whole with steel pile casing, shear device and steel pile casing, is showing the adhesion force that increases between back cover concrete and the steel cofferdam lateral wall. Meanwhile, the gravity of the steel cofferdam and the bottom sealing concrete is transferred to the steel pile casing, so that the relative fixation of the positions of the steel cofferdam and the bottom sealing concrete with the steel pile casing is ensured, and the crack generated by the relative displacement between the steel cofferdam and the bottom sealing concrete is prevented.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a cross-sectional view of the structure of an embodiment of the present application;
FIG. 2 is a top view 1/4 of an embodiment of the present application;
FIG. 3 is an enlarged view of a portion of FIG. 1 at A;
fig. 4 is a schematic structural diagram of a shear device and a steel cofferdam and a steel casing according to an embodiment of the present application.
Reference numerals:
1. steel cofferdams; 11. an inner wall panel; 12. an outer wall panel; 13. a bulkhead; 14. a horizontal ring plate; 15. a parallel-connection diagonal rod; 16. a blade foot;
2. a steel casing; 3. sealing bottom concrete; 4. a shear resisting device; 5. inner support of the cofferdam;
41. a lower cross bar; 42. a first diagonal member; 43. an upper cross bar; 44. a second diagonal member.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The embodiment of the application provides a steel cofferdam for enhancing the bonding force of semi-suspended bottom-sealing concrete, and the steel cofferdam can solve the problems of difficult operability, complex process, large construction difficulty, long construction period and construction cost of a construction method for improving the bonding force between the side wall of the steel cofferdam and the bottom-sealing concrete in the related art.
Referring to fig. 1 to 3, an embodiment of the present application provides a steel cofferdam for enhancing concrete adhesion of a semi-suspended bottom closure, including:
the steel cofferdam comprises a steel cofferdam 1, wherein the steel cofferdam 1 is arranged around a plurality of steel pile casings 2 inserted into soil, the steel pile casings 2 are arranged in a rectangular array mode, the bottom of the steel cofferdam 1 sinks to the position below the surface of a riverbed, and the riverbed and the steel cofferdam 1 pour bottom sealing concrete 3 to provide a closed environment.
The shearing resistant devices 4 are arranged in a plurality of numbers, the shearing resistant devices 4 are fixedly connected to the periphery of the inner wall of the steel cofferdam 1, and the shearing resistant devices 4 are respectively and fixedly connected with the steel casing 2 close to the steel cofferdam 1. The specific number and size of the shearing resistant devices 4 are determined according to the volume of the steel cofferdam 1 and the thickness of the back cover concrete 3, and the steel cofferdam 1 and the back cover concrete 3 can be reliably connected.
And the back cover concrete 3, wherein the back cover concrete 3 is poured at the bottom of the steel cofferdam 1, and the shear resistant device 4 is embedded in the back cover concrete 3.
The utility model provides a steel cofferdam 1 is through a plurality of shear device 4 of fixed connection all around at 1 inner wall of steel cofferdam, and a plurality of shear device 4 respectively with be close steel pile casing 2 fixed connection of steel cofferdam 1, link into a whole with steel cofferdam 1 and steel pile casing 2 through shear device 4, back and steel pile casing 2, shear device 4 and steel pile casing 2 link into an integrated entity after the hardening is pour to the back in the back concrete of back cover, show the adhesion force that increases between back cover concrete 3 and the steel cofferdam lateral wall 1. Meanwhile, the gravity of the steel cofferdam 1 and the bottom sealing concrete 3 is transferred to the steel pile casing 2, so that the steel cofferdam 1, the bottom sealing concrete 3 and the steel pile casing 2 are ensured to be relatively fixed, and cracks generated by relative displacement between the steel cofferdam 1 and the bottom sealing concrete 3 are prevented.
In some alternative embodiments: referring to fig. 4, the embodiment of the present application provides a steel cofferdam for enhancing the bonding force of semi-suspended bottom-sealing concrete, and the shear resisting device 4 of the steel cofferdam comprises a lower cross bar 41 and a first inclined bar 42, wherein the lower cross bar 41 is fixedly connected between the steel cofferdam 1 and the steel pile casing 2. The first diagonal rod 42 is located above the lower cross rod 41, two ends of the first diagonal rod 42 are respectively and fixedly connected with the steel cofferdam 1 and the lower cross rod 41, and the first diagonal rod 42, the lower cross rod 41 and the steel cofferdam 1 form a stable triangular structure.
The shear device 4 of this embodiment has set up sheer pole 41 and first down tube 42, and sheer pole 41 fixed connection is between steel cofferdam 1 and steel pile casing 2, and first down tube 42 is located the top of sheer pole 41, and the both ends of first down tube 42 respectively with steel cofferdam 1 and sheer pole 41 fixed connection, first down tube 42, sheer pole 41 and steel cofferdam 1 form stable triangular structure. The device 4 that shears of this structure can overcome the 3 come-ups of back cover concrete, and the device 4 that shears transmits the buoyancy of back cover concrete 3 to the steel protects on the section of thick bamboo 2, ensures that the height in the middle of back cover concrete 3 and steel cofferdam 1 is stable.
In some alternative embodiments: referring to fig. 4, the embodiment of the present application provides a steel cofferdam for enhancing the bonding force of semi-suspended bottom-sealing concrete, and the shear resisting device 4 of the steel cofferdam comprises an upper cross bar 43 and a second inclined bar 44, wherein the upper cross bar 43 is fixedly connected between the steel cofferdam 1 and the steel pile casing 2. The second diagonal bar 44 is positioned below the upper cross bar 43, two ends of the second diagonal bar 44 are respectively and fixedly connected with the steel cofferdam 1 and the upper cross bar 43, and the second diagonal bar 44, the upper cross bar 43 and the steel cofferdam 1 form a stable triangular structure.
The shear device 4 of this embodiment is provided with an upper cross bar 43 and a second diagonal bar 44, the upper cross bar 43 is fixedly connected between the steel cofferdam 1 and the steel pile casing 2, the second diagonal bar 44 is located below the upper cross bar 43, two ends of the second diagonal bar 44 are respectively fixedly connected with the steel cofferdam 1 and the upper cross bar 43, and the second diagonal bar 44, the upper cross bar 43 and the steel cofferdam 1 form a stable triangular structure. The shear resistant device 4 of the structure can overcome the sinking of the steel cofferdam 1, the shear resistant device 4 transmits the gravity of the steel cofferdam 1 to the steel pile casing 2, and the stability of the elevation between the bottom sealing concrete 3 and the steel cofferdam 1 is ensured.
In some alternative embodiments: referring to fig. 4, the embodiment of the present application provides a steel cofferdam for enhancing the adhesion of semi-suspended bottom-sealing concrete, and the shear resisting device 4 of the steel cofferdam comprises an upper cross bar 43, a lower cross bar 41, a first inclined bar 42 and a second inclined bar 44, wherein the upper cross bar 43 is positioned above the lower cross bar 41, and the upper cross bar 43 and the lower cross bar 41 are both fixedly connected between the steel cofferdam 1 and the steel casing 2. The first diagonal rod 42 and the second diagonal rod 44 are fixedly connected between the upper cross rod 43 and the lower cross rod 41 in an X-shaped structure.
The shear device 4 of the embodiment is provided with an upper cross bar 43, a lower cross bar 41, a first inclined bar 42 and a second inclined bar 44, wherein the upper cross bar 43 is positioned above the lower cross bar 41, and the upper cross bar 43 and the lower cross bar 41 are both fixedly connected between the steel cofferdam 1 and the steel pile casing 2. The first inclined rod 42 and the second inclined rod 44 are in an X-shaped structure and fixedly connected between the upper cross rod 43 and the lower cross rod 41, and the upper cross rod 43, the lower cross rod 41, the first inclined rod 42 and the second inclined rod 44 form a stable triangular structure. The shear resistant device 4 of the structure can overcome the sinking of the steel cofferdam 1, the shear resistant device 4 transmits the gravity of the steel cofferdam 1 to the steel pile casing 2, and the stability of the elevation between the bottom sealing concrete 3 and the steel cofferdam 1 is ensured. Meanwhile, the sinking of the steel cofferdam 1 can be overcome, the gravity of the steel cofferdam 1 is transmitted to the steel pile casing 2 by the shearing resistant device 4, and the stability of the height between the bottom sealing concrete 3 and the steel cofferdam 1 is ensured.
The upper cross bar 43, the lower cross bar 41, the first diagonal bar 42 and the second diagonal bar 44 in this embodiment are any one or more of angle steel, square steel, channel steel and i-shaped steel, and the shear device 4 is welded and connected by the above-mentioned profile steel.
In some alternative embodiments: referring to fig. 2 and 4, the embodiment of the application provides a steel cofferdam for enhancing the bonding force of semi-suspended bottom-sealing concrete, and the steel cofferdam 1 is a rectangular structure formed by splicing and enclosing a plurality of cofferdam wall plates. The cofferdam wall plate comprises an inner wall plate 11, an outer wall plate 12 and a plurality of cabin separation plates 13 which are longitudinally arranged and vertically connected with the inner wall plate 11 and the outer wall plate 12.
The cofferdam wall plates are integrally welded and connected by adopting an inner wall plate 11, an outer wall plate 12, a compartment plate 13, a horizontal ring plate 14 and a parallel inclined rod 15, so that the structural strength of the steel cofferdam 1 is improved.
In some alternative embodiments: referring to fig. 1, the embodiment of the application provides a steel cofferdam of reinforcing half unsettled back cover concrete adhesion, is equipped with cofferdam internal stay 5 in this steel cofferdam 1, and this cofferdam internal stay 5 includes stull and bracing, and the stull is connected between the cofferdam wallboard that is parallel to each other, and the bracing is connected between two mutually perpendicular's cofferdam wallboards. The cross braces and the inclined braces are used for integrally enhancing the structural strength of the steel cofferdam 1 and improving the compression resistance of the steel cofferdam 1.
In some alternative embodiments: referring to fig. 4, the embodiment of the present application provides a steel cofferdam for enhancing the concrete bonding force of a semi-suspended bottom-sealed, the bottom of the steel cofferdam 1 is provided with a blade 16 sinking into the river bed, and the blade 16 is used for sinking the steel cofferdam 1 below the river bed. And a water stop steel belt (not shown in the figure) embedded in the back cover concrete 3 is arranged around the inner wall of the steel cofferdam 1 and is used for sealing the water seepage path between the steel cofferdam 1 and the back cover concrete 3, so that the sealing performance between the steel cofferdam 1 and the back cover concrete 3 is improved.
Principle of operation
The embodiment of the application provides a steel cofferdam for enhancing the bonding force of semi-suspended bottom-sealing concrete, and the steel cofferdam 1 is arranged at the periphery of a plurality of steel casing barrels 2 inserted into soil, and the bottom of the steel cofferdam 1 sinks below the surface of a river bed; fixedly connecting a plurality of shear-resistant devices 4 around the inner wall of the steel cofferdam 1, wherein the shear-resistant devices 4 are respectively and fixedly connected with the steel casing 2 close to the steel cofferdam 1; and pouring bottom sealing concrete 3 at the bottom of the steel cofferdam 1, and embedding the shear resistant device 4 in the bottom sealing concrete 3.
The utility model provides a steel cofferdam 1 is through a plurality of shear device 4 of fixed connection all around at 1 inner wall of steel cofferdam, and a plurality of shear device 4 respectively with be close steel pile casing 2 fixed connection of steel cofferdam 1, link into a whole with steel cofferdam 1 and steel pile casing 2 through shear device 4, back and steel pile casing 1, shear device 4 and steel pile casing 2 link into an integrated entity after the hardening is pour to the back in the back concrete of sealing 3, show the adhesion force that increases between 3 and the 1 lateral wall in steel cofferdam. Meanwhile, the gravity of the steel cofferdam 1 and the bottom sealing concrete 3 is transferred to the steel pile casing 2, so that the steel cofferdam 1, the bottom sealing concrete 3 and the steel pile casing 2 are ensured to be relatively fixed, and cracks generated by relative displacement between the steel cofferdam 1 and the bottom sealing concrete 3 are prevented.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The utility model provides a steel cofferdam of half unsettled back cover concrete adhesion of reinforcing which characterized in that includes:
the steel cofferdam comprises a steel cofferdam (1), wherein the steel cofferdam (1) is arranged around a plurality of steel pile casings (2) inserted into soil in a surrounding manner, and the bottom of the steel cofferdam (1) sinks below the surface of a river bed;
the shear resisting devices (4) are arranged, the shear resisting devices (4) are fixedly connected to the periphery of the inner wall of the steel cofferdam (1), and the shear resisting devices (4) are respectively and fixedly connected with the steel pile casings (2) close to the steel cofferdam (1);
the bottom sealing concrete (3) is poured at the bottom of the steel cofferdam (1), and the shearing resistant device (4) is embedded in the bottom sealing concrete (3).
2. The steel cofferdam of claim 1 for enhancing the adhesion of concrete to the semi-suspended bottom closure, wherein:
the shear resisting device (4) comprises a lower cross bar (41) and a first inclined bar (42), wherein the lower cross bar (41) is fixedly connected between the steel cofferdam (1) and the steel pile casing (2);
the first inclined rod (42) is located above the lower cross rod (41), two ends of the first inclined rod (42) are fixedly connected with the steel cofferdam (1) and the lower cross rod (41) respectively, and the first inclined rod (42), the lower cross rod (41) and the steel cofferdam (1) form a triangular structure.
3. The steel cofferdam for reinforcing the bonding force of the semi-suspended bottom-sealing concrete as recited in claim 1 or 2, characterized in that:
the shear resisting device (4) comprises an upper cross bar (43) and a second inclined bar (44), wherein the upper cross bar (43) is fixedly connected between the steel cofferdam (1) and the steel pile casing (2);
the second inclined rod (44) is located below the upper cross rod (43), two ends of the second inclined rod (44) are fixedly connected with the steel cofferdam (1) and the upper cross rod (43) respectively, and the second inclined rod (44), the upper cross rod (43) and the steel cofferdam (1) form a triangular structure.
4. The steel cofferdam of claim 1 for enhancing the adhesion of concrete to the semi-suspended bottom closure, wherein:
the shear resisting device (4) comprises an upper cross bar (43), a lower cross bar (41), a first inclined bar (42) and a second inclined bar (44), wherein the upper cross bar (43) is positioned above the lower cross bar (41), and the upper cross bar (43) and the lower cross bar (41) are both fixedly connected between the steel cofferdam (1) and the steel pile casing (2);
the first inclined rod (42) and the second inclined rod (44) are fixedly connected between the upper cross rod (43) and the lower cross rod (41) in an X-shaped structure.
5. The steel cofferdam of claim 4 for enhancing the concrete adhesion of the semi-suspended bottom closure, wherein:
the upper cross bar (43), the lower cross bar (41), the first inclined bar (42) and the second inclined bar (44) are any one or more of angle steel, square steel, channel steel and I-shaped steel.
6. The steel cofferdam of claim 1 for enhancing the adhesion of concrete to the semi-suspended bottom closure, wherein:
the steel cofferdam (1) is a rectangular structure formed by splicing and enclosing a plurality of cofferdam wall plates.
7. The steel cofferdam of claim 6 for enhancing the concrete adhesion of the semi-suspended bottom closure, wherein:
the cofferdam wall plate comprises an inner wall plate (11), an outer wall plate (12) and a plurality of cabin separation plates (13) which are longitudinally arranged and vertically connected with the inner wall plate (11) and the outer wall plate (12);
horizontal ring plates (14) are arranged on the adjacent surfaces of the inner wall plate (11) and the outer wall plate (12), a plurality of parallel-connection inclined rods (15) connected with the horizontal ring plates (14) are arranged between the inner wall plate (11) and the outer wall plate (12), and each parallel-connection inclined rod (15) and the cabin separation plate (13), the inner wall plate (11) or the outer wall plate (12) form a triangular structure.
8. The steel cofferdam of claim 6 for enhancing the concrete adhesion of the semi-suspended bottom closure, wherein:
be equipped with cofferdam internal stay (5) in steel cofferdam (1), cofferdam internal stay (5) include stull and bracing, the stull is connected between the cofferdam wallboard that is parallel to each other, the bracing is connected between two mutually perpendicular's cofferdam wallboard.
9. The steel cofferdam of claim 1 for enhancing the adhesion of concrete to the semi-suspended bottom closure, wherein:
and the bottom of the steel cofferdam (1) is provided with a blade foot (16) sinking into a riverbed.
10. The steel cofferdam of claim 1 for enhancing the adhesion of concrete to the semi-suspended bottom closure, wherein:
and water stop steel belts embedded into the bottom sealing concrete (3) are arranged around the inner wall of the steel cofferdam (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022142376.XU CN213571999U (en) | 2020-09-24 | 2020-09-24 | Steel cofferdam of half unsettled back cover concrete adhesion of reinforcing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022142376.XU CN213571999U (en) | 2020-09-24 | 2020-09-24 | Steel cofferdam of half unsettled back cover concrete adhesion of reinforcing |
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| CN213571999U true CN213571999U (en) | 2021-06-29 |
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