CN208650071U - Sandwiched with steel plates concrete combined board cofferdam - Google Patents
Sandwiched with steel plates concrete combined board cofferdam Download PDFInfo
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- CN208650071U CN208650071U CN201821180944.1U CN201821180944U CN208650071U CN 208650071 U CN208650071 U CN 208650071U CN 201821180944 U CN201821180944 U CN 201821180944U CN 208650071 U CN208650071 U CN 208650071U
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 266
- 239000010959 steel Substances 0.000 title claims abstract description 266
- 239000002131 composite material Substances 0.000 claims description 18
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 9
- 230000008901 benefit Effects 0.000 abstract description 2
- 239000011120 plywood Substances 0.000 abstract 3
- 238000007596 consolidation process Methods 0.000 abstract 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 239000000203 mixture Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 239000011435 rock Substances 0.000 description 3
- 230000000740 bleeding effect Effects 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 125000003003 spiro group Chemical group 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
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- Bridges Or Land Bridges (AREA)
Abstract
The utility model discloses sandwiched with steel plates concrete combined board cofferdam, pedestal top side detachable formula is equipped with cofferdam, cofferdam is the rectangular frame structure being spliced by transverse set plywood and longitudinal combination plate, transverse set plywood and longitudinal combination plate include the sandwich concrete slab of plurality of steel plates, the sandwich concrete slab rectangular array arrangement of plurality of steel plates, detachable assembly between sandwiched with steel plates concrete slab, detachable assembly between transverse set plywood and longitudinal combination plate, sandwiched with steel plates concrete slab includes steel plate, two pieces of equal fixing assemblings in the opposite side of steel plate have shear connector, concrete has been poured between two blocks of steel plates, the sandwiched with steel plates concrete slab of the utility model be by shear connector by two blocks of steel plates and its between a kind of compoboard for connecting of concrete, with bearing capacity height, rigidity is big, the advantages of construction is simple, and it can be with It realizes over-the-counter prefabricated, on-site consolidation, dispenses complicated support system, greatly improve speed of application, bring great convenience for construction.
Description
Technical Field
The utility model relates to a bridge engineering technical field, concretely relates to steel sheet sandwich concrete compoboard cofferdam belongs to the temporary works field.
Background
In recent years, the bridge industry in China is vigorously developed, more and more bridges are built in water system developed areas such as rivers, lakes, seas and the like, and the foundation pier of the bridge needs to be constructed in a deep water environment. The steel cofferdam is a temporary enclosure structure which is indispensable in deepwater building construction, can be recycled, and has the function of preventing water and soil from entering the building position of a building so as to drain water in the cofferdam, excavate a foundation pit and build the building. At present, in practical engineering, commonly used steel cofferdams mainly comprise a steel sheet pile cofferdam, a steel box cofferdam and a lock catch steel pipe pile cofferdam. The steel sheet pile cofferdam is hammered into rock soil by hammering, hard soil layers are easy to be hammered into the rock soil, steel sheet piles can be repeatedly used, the construction process is simple, however, enclosing purlin support and inclined support are required to be carried out inside the steel sheet pile cofferdam structure, and the lower ends of the steel sheet piles are easy to buckle in the hammering process; the steel boxed cofferdam mainly comprises a bottom steel boxed cofferdam, a bottom plate, a side plate, an inner support and a hanging system, wherein water is mainly sealed through bottom sealing concrete and the boxed side plate, and the construction of the steel boxed cofferdam is relatively complex; the lock catch steel pipe pile cofferdam mainly comprises a support steel pipe pile, a male and female lock catch, a horizontal support and bottom sealing concrete, the support system and the construction process of the lock catch steel pipe pile cofferdam are simpler than those of a steel plate pile cofferdam, the lock catch steel pipe pile cofferdam has stronger rigidity and can meet the construction requirement, however, as the male and female lock catch is attached to the outer side surface of the lock catch steel pipe pile, the resistance is increased in the process of inserting and driving the steel pipe pile by utilizing a crane and a vibration hammer, and once a harder rock stratum is met, the specified depth cannot be reached. In many building areas like reservoir areas, the water in the building area is controllable over time, in which case the cofferdam can be installed without water.
SUMMERY OF THE UTILITY MODEL
To the condition of installation cofferdam under the anhydrous condition, the utility model provides a steel sheet sandwich concrete compoboard cofferdam, it has the characteristics that bear the weight of dynamic height, rigidity are big, bleeding nature is good, the utility model discloses technical scheme is as follows:
the steel plate sandwich concrete composite plate cofferdam comprises a base, a first connecting structure, a transverse composite plate and a longitudinal composite plate, the top of the base is detachably provided with a cofferdam through a first connecting structure, the cofferdam is a rectangular frame structure formed by splicing a transverse combination slab and a longitudinal combination slab, the transverse combination slabs and the longitudinal combination slabs are identical in structure and respectively comprise a second connecting structure, a third connecting structure, a fourth connecting structure and a plurality of steel plate sandwich concrete slabs, the steel plate sandwich concrete slabs are arranged in a rectangular array, the steel plate sandwich concrete slabs adjacent in the horizontal direction are detachably assembled through the second connecting structure, the steel plate sandwich concrete slabs adjacent in the vertical direction are detachably assembled through the third connecting structure, the transverse combination plate and the longitudinal combination plate are detachably assembled through a fourth connecting structure;
the steel plate sandwich concrete slab comprises two steel plates and two shear connecting pieces, wherein the two steel plates are arranged in parallel, the shear connecting pieces are fixedly assembled on the opposite side faces of the two steel plates, and concrete is poured between the two steel plates.
Preferably, first connection structure includes first angle steel, connecting bolt, first angle steel is equipped with two, two first angle steel is in the lower floor steel sheet sandwich concrete slab's bilateral symmetry arranges, two the bottom surface of first angle steel all with the laminating of base upper surface, two the side of first angle steel respectively with the below the laminating of steel sheet sandwich concrete slab's leading flank and trailing flank, the fixed pre-buried bolt that is equipped with in base top, the bottom surface and the spiro union of first angle steel are run through at pre-buried bolt's top have lock nut, connecting bolt runs through the side and the lower floor of first angle steel sheet sandwich concrete slab and spiro union have lock nut simultaneously.
Preferably, the third connecting structure comprises flange bolts, flange steel plates are fixedly assembled at the bottom of the upper steel plate sandwich concrete plate and at the top of the lower steel plate sandwich concrete plate, and the flange bolts penetrate through the two flange steel plates and are in threaded connection with locking nuts.
Preferably, the second connection structure includes the bellying, steel sheet sandwich concrete slab's left surface is equipped with the bellying, steel sheet sandwich concrete slab's right flank be equipped with bellying interference fit's spill incision, the inside reinforcing plate that is equipped with of bellying.
Preferably, the second connection structure includes I-steel and first channel-section steel, steel sheet sandwich concrete slab's left surface is equipped with the I-steel, the edge of a wing of I-steel is parallel with steel sheet sandwich concrete slab's left surface, steel sheet sandwich concrete slab's right surface is equipped with a pair of first channel-section steel, two the side of first channel-section steel is parallel with steel sheet sandwich concrete slab's right surface, two the recess of first channel-section steel sets up relatively, and two leave certain clearance, two between the first channel-section steel clearance between the first channel-section steel is greater than the web thickness of I-steel.
Preferably, the second connection structure comprises connection steel plates, the connection steel plates are respectively assembled on the front side and the back side of the steel plate sandwich concrete slab, the two connection steel plates extend to the outside of the left side of the steel plate sandwich concrete slab, bolt connection through holes are formed in the two connection steel plates, and bolt through holes matched with the bolt connection through holes are formed in the other side of the steel plate sandwich concrete slab.
Preferably, the fourth connecting structure comprises a second channel steel, the second channel steel is assembled on the side face of the longitudinal combination plate, and a groove of the second channel steel is in interference fit with any one of the left end and the right end of the transverse combination plate.
Preferably, the fourth connecting structure comprises two second angle steels, the bottom surfaces of the two second angle steels are assembled on the side surfaces of the longitudinal combination plates, the side surfaces of the two second angle steels are vertically arranged, a certain gap is reserved between the side surfaces of the two second angle steels, and any one end of the left side and the right side of the transverse combination plate is in clearance interference fit with the gap between the side surfaces of the two second angle steels.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a steel sheet sandwich concrete slab is a combined board that couples together two steel sheets and the concrete between them through the shear force connecting piece, has bearing capacity height, rigidity big, construction simple, advantage that the bleeding is good to steel sheet sandwich concrete slab assembles into the cofferdam, can leave out complicated braced system, and can realize extraterrestrial prefabrication, on-the-spot assembly, improve the construction speed greatly, bring very big facility for the construction.
Drawings
Fig. 1 is a schematic view of a cofferdam of the present invention in a top view;
FIG. 2 is a schematic view of the cofferdam of the present invention;
FIG. 3 is a schematic view of a third connection structure of the present invention;
FIG. 4 is a schematic diagram of a steel plate sandwich concrete plate structure according to the present invention;
FIG. 5 is a schematic diagram of a steel plate sandwich concrete plate structure according to the present invention;
fig. 6 is a schematic view of a second connection structure of the present invention;
fig. 7 is a schematic structural diagram of embodiment 2 of the present invention;
fig. 8 is a schematic structural view of embodiment 3 of the present invention;
fig. 9 is a schematic view of a first connection structure of the present invention;
fig. 10 is a connection diagram of a second connection structure of the present invention;
fig. 11 is a schematic view of the connection structure of embodiment 2 of the present invention;
fig. 12 is a schematic view of the connection structure of embodiment 3 of the present invention;
fig. 13 is a schematic view of a fourth connection structure of the present invention;
fig. 14 is a schematic view of the connection structure of embodiment 4 of the present invention;
fig. 15 is a connection diagram of a fourth connection structure of the present invention;
fig. 16 is a connection diagram of a fourth connection structure of the present invention;
fig. 17 is a schematic view of a first coupling structure of the present invention.
Wherein,
a base 1;
a first connecting structure 2;
a first angle steel 21, a connecting bolt 22 and an embedded bolt 23;
a transverse composition plate 3;
a longitudinal composition board 4;
a cofferdam 5;
a second connecting structure 6;
the structure comprises a boss 61, a concave notch 62, a reinforcing plate 63, an I-shaped steel 64, a first channel steel 65, a connecting steel plate 66, a bolt connecting through hole 67 and a bolt through hole 68;
a third connecting structure 7;
flange bolts 71, flange steel plates 72;
a fourth connecting structure 8;
a second channel steel 81 and a second angle steel 82;
a steel plate sandwich concrete plate 9;
steel plate 91, twisted steel 92, bolt 93.
Detailed Description
Example 1
In order to solve the problems in the prior art, as shown in fig. 1 to 16, the utility model provides a steel plate sandwich concrete slab cofferdam, which comprises a base 1, a first connecting structure 2, a horizontal composition board 3 and a vertical composition board 4, wherein the top of the base 1 is detachably assembled with a cofferdam 5 through the first connecting structure 2, the cofferdam 5 is a rectangular frame structure formed by splicing the horizontal composition board 3 and the vertical composition board 4, the horizontal composition board 3 and the vertical composition board 4 have the same structure and respectively comprise a second connecting structure 6, a third connecting structure 7, a fourth connecting structure 8 and a plurality of steel plate sandwich concrete slabs 9, the plurality of steel plate sandwich concrete slabs 9 are arranged in a rectangular array, two steel plate sandwich concrete slabs 9 adjacent in the horizontal direction are detachably assembled through the second connecting structure 6, two steel plate sandwich concrete slabs 9 adjacent in the vertical direction are detachably assembled through the third connecting structure 7, the transverse combination board 3 and the longitudinal combination board 4 are detachably assembled through a fourth connecting structure 8.
In this embodiment, the transverse combination slab 3 and the longitudinal combination slab 4 are formed by splicing four steel plate sandwich concrete slabs 9, and the four steel plate sandwich concrete slabs 9 are distributed in two rows and two columns, but not limited thereto, and in practical application, the length, width and height of the enclosed space can be further adjusted according to the requirement.
Steel sheet sandwich concrete board 9 includes steel sheet 91, shear force connecting piece, and steel sheet 91 is equipped with two, two steel sheet 91 parallel arrangement, and the equal fixed shear force connecting piece that is equipped with in the side that two steel sheets 91 are relative has pour the concrete between two steel sheets 91.
More specifically, as shown in fig. 5, the shear connector is embodied as a rebar 92, and a large adhesive force and a large engaging force can be generated between the rebar 92 and the concrete, so that the mechanical strength of the steel plate 91 sandwich concrete can be effectively improved.
Also, as shown in fig. 4, the shear connector may be a bolt 93, which produces the same technical effect as the twisted steel 92.
Specifically, the first connecting structure 2 includes first angle steel 21, connecting bolts 22, and embedded bolts 23, as shown in fig. 9, the first angle steel 21 is provided with two, the two first angle steels 21 are symmetrically arranged on both sides of the lowest steel plate sandwich concrete plate 9, bottom surfaces of the two first angle steels 21 are attached to the upper surface of the base 1, side surfaces of the two first angle steels 21 are attached to the front side surface and the rear side surface of the lowest steel plate sandwich concrete plate 9, the embedded bolts 23 are fixedly assembled on the top of the base 1, the top of the embedded bolts 23 penetrates through the bottom surface of the first angle steel 21 and is screwed with a locking nut, and the connecting bolts 22 simultaneously penetrate through the side surface of the first angle steel 21 and the lowest steel plate sandwich concrete plate 9 and are screwed with a locking nut.
As shown in fig. 17, the first connection structure has a connection mode that the embedded bolts 23 of the base and the flange steel plate 72 at the bottom of the steel plate sandwich concrete plate 9 are fixedly connected.
More specifically, the base 1 is formed by pouring concrete, the embedded bolts 23 are arranged at the top of the base 1 before pouring, and two sides of the first angle steel 21 are detachably assembled at the top of the base 1 and the side surface of the steel plate sandwich concrete plate 9 respectively, so that the base 1 and the steel plate sandwich concrete plate 9 are fixed.
Specifically, the third connecting structure 7 includes flange bolts 71, and flange steel plates 72 are fixedly fitted to both the bottom of the upper steel plate sandwich concrete plate 9 and the top of the lower steel plate sandwich concrete plate 9, and the flange bolts 71 penetrate through the two flange steel plates 72 and are screwed with lock nuts.
Specifically, the second connecting structure 6 includes a convex portion 61, the convex portion 61 is assembled on the left side surface of the steel plate sandwich concrete plate 9, the concave notch 62 which is in interference fit with the convex portion 61 is formed on the right side surface of the steel plate sandwich concrete plate 9, and the reinforcing plate 63 is formed inside the convex portion 61.
During splicing, the convex part 61 of one steel plate sandwich concrete plate 9 is inserted into the concave notch 62 of the other steel plate sandwich concrete plate 9, the convex part 61 and the concave notch 62 are in interference fit, the two steel plate sandwich concrete plates 9 are connected through friction force and meshing force between the convex part 61 and the concave notch 62, bolts can penetrate through the assembling positions of the convex part 61 and the concave notch 62 according to actual conditions, and the fixing effect is enhanced by the bolts.
Specifically, the fourth connecting structure 8 includes a second channel 81, the second channel 81 is mounted on a side surface of the longitudinal combination plate 4, and a groove of the second channel 81 is in interference fit with either one of left and right ends of the transverse combination plate 3.
During the concatenation, insert the one end of horizontal compoboard 3 in the recess of second channel-section steel 81, realize fixing between second channel-section steel 81 and the horizontal compoboard 3 through frictional force and bite-force between the recess of 3 one end of horizontal compoboard and second channel-section steel 81, also can be according to actual conditions through-bolt in order to strengthen fixed effect between channel-section steel both sides board.
In the present embodiment, the fourth connecting structure 8 adopts the above structure and installation manner, but is not limited thereto, as shown in fig. 15, a mode similar to the protruding portion and the concave notch in the second connecting structure 6 can be adopted, as shown in fig. 16, or a mode similar to the mating of the i-shaped steel and the channel steel in embodiment 2, and the structures and principles of the above two modes are described in detail in the specific embodiment of the present invention, and will not be described in detail here.
The assembly method of the steel plate sandwich concrete slab cofferdam comprises the following steps:
step 1, manufacturing a steel plate sandwich concrete plate 9: cutting the steel plates 91 according to the designed size, respectively welding the shear connectors on the two steel plates 91, and then pouring concrete between the two steel plates 91;
step 2, arranging second connecting structures 6 on the left side surface and the right side surface of the steel plate sandwich concrete plate 9;
step 3, welding flange steel plates 72 on the upper side surface and the lower side surface of the steel plate sandwich concrete plate 9, and reserving through holes for penetrating through flange bolts 71 on the flange steel plates 72;
step 4, arranging embedded bolts 23 at the top of the base 1, and pouring concrete of the base 1;
step 5, connecting the steel plate sandwich concrete plate 9 with the base 1: connecting the lowest steel plate sandwich concrete plate 9 with the base 1 by using the embedded bolts 23, the first angle steel 21 and the connecting bolts 22;
step 6, connecting the steel plate sandwich concrete plates 9: aligning the plate surfaces of two steel plate sandwich concrete plates 9 adjacent in the vertical direction, connecting flange steel plates 72 of the two steel plate sandwich concrete plates 9 by using flange bolts 71, aligning the plate surfaces of two steel plate sandwich concrete plates 9 adjacent in the horizontal direction, and connecting by using a second connecting structure 6;
step 7, connecting the transverse combination board 3 and the longitudinal combination board 4: one end of the transverse combination plate 3 is placed in a groove of the second channel steel 81 or a gap between the two second angle steels 82;
8, sticking a water stop strip at the joint between the steel plate sandwich concrete plates 9 for preventing water;
step 9, dismantling the cofferdam 5: after the bridge abutment is exposed out of the water, the vibration hammer is used for vibrating and loosening the connecting bolt 22, a diver is sent to enter the water to disassemble the first connecting structure, the second connecting structure, the third connecting structure and the fourth connecting structure, and then the crane is used for lifting out each steel plate sandwich concrete plate 9 of the cofferdam 5 to finish the disassembly.
Example 2
Steel plate sandwich concrete slab cofferdam, the other characteristics are the same as example 1, except that: in this embodiment, another second connecting structure 6 is disclosed, as shown in fig. 7, the specific structure is as follows: the second connecting structure 6 comprises I-shaped steel 64 and first channel steel 65, the I-shaped steel 64 is assembled on the left side face of the steel plate sandwich concrete slab 9, flanges of the I-shaped steel 64 are parallel to the left side face of the steel plate sandwich concrete slab 9, a pair of first channel steel 65 is assembled on the right side face of the steel plate sandwich concrete slab 9, the side edges of the two first channel steel 65 are parallel to the right side face of the steel plate sandwich concrete slab 9, grooves of the two first channel steel 65 are oppositely arranged, a certain gap is reserved between the two first channel steel 65, and the gap between the two first channel steel 65 is larger than the web thickness of the I-shaped steel 64.
The I-shaped steel 64 and the first channel steel 65 are fixed through bolts pre-embedded at the left end and the right end of the steel plate sandwich concrete slab 9 respectively, during installation, a flange on one side of the I-shaped steel 64 is fixedly connected with the steel plate sandwich concrete slab 9, and a flange on the other side of the I-shaped steel 64 is clamped between the two channel steels, so that the stability between the two horizontally adjacent steel plate sandwich concrete slabs 9 is greatly improved, and meanwhile, concrete can be poured between the I-shaped steel 64 and the channel steels to further improve the structural strength.
Example 3
Steel plate sandwich concrete slab cofferdam, the other characteristics are the same as example 1, except that: in this embodiment, another second connecting structure 6 is disclosed, as shown in fig. 8, the specific structure is as follows: the second connecting structure 6 comprises connecting steel plates 66, the front side and the rear side of the steel plate sandwich concrete plate 9 are respectively provided with the connecting steel plates 66, the two connecting steel plates 66 extend out of the left side of the steel plate sandwich concrete plate 9, the two connecting steel plates 66 are provided with bolt connecting through holes 67, and the other side of the steel plate sandwich concrete plate 9 is provided with bolt through holes 68 matched with the bolt connecting through holes 67.
Compared with the embodiment 1, the embodiment fixes two horizontally adjacent steel plate sandwich concrete plates 9 through two steel plates 91, and greatly improves the bending resistance and the shearing resistance of the second connecting structure 6.
Example 4
Steel plate sandwich concrete slab cofferdam, the other characteristics are the same as example 1, except that: in this embodiment, another fourth connecting structure 8 is disclosed, as shown in fig. 14, the specific structure is as follows: the fourth connecting structure 8 comprises two second angle steels 82, the two second angle steels 82 are arranged, the bottom surfaces of the two second angle steels 82 are assembled on the side surfaces of the longitudinal combination plate 4, the side surfaces of the two second angle steels 82 are vertically arranged, a certain gap is reserved between the side surfaces of the two second angle steels 82, and any one end of the transverse combination plate 3 in the left and right direction is in clearance interference fit with the side surfaces of the two second angle steels 82.
More specifically speaking, detachable the connection is realized with the pre-buried bolt in 4 sides of vertical compoboard to the bottom surface accessible nut of two second angle steel 82, has further improved the utility model discloses the convenient degree of installation and dismantlement, the side through two second angle steel 82 can reach the same technological effect with embodiment 1 to the clamp force of horizontal compoboard 3.
The above description is only for the preferred embodiment of the present invention, and should not be construed as limiting the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (8)
1. The steel plate sandwich concrete composite plate cofferdam is characterized by comprising a base, a first connecting structure, a transverse composite plate and a longitudinal composite plate, the top of the base is detachably provided with a cofferdam through a first connecting structure, the cofferdam is a rectangular frame structure formed by splicing a transverse combination slab and a longitudinal combination slab, the transverse combination slabs and the longitudinal combination slabs are identical in structure and respectively comprise a second connecting structure, a third connecting structure, a fourth connecting structure and a plurality of steel plate sandwich concrete slabs, the steel plate sandwich concrete slabs are arranged in a rectangular array, the steel plate sandwich concrete slabs adjacent in the horizontal direction are detachably assembled through the second connecting structure, the steel plate sandwich concrete slabs adjacent in the vertical direction are detachably assembled through the third connecting structure, the transverse combination plate and the longitudinal combination plate are detachably assembled through a fourth connecting structure;
the steel plate sandwich concrete slab comprises two steel plates and two shear connecting pieces, wherein the two steel plates are arranged in parallel, the shear connecting pieces are fixedly assembled on the opposite side faces of the two steel plates, and concrete is poured between the two steel plates.
2. The steel plate sandwich concrete composite slab cofferdam of claim 1, wherein the first connection structure comprises two first angle steels and two connection bolts, the two first angle steels are symmetrically arranged at two sides of the lowest steel plate sandwich concrete slab, the bottom surfaces of the two first angle steels are attached to the upper surface of the base, the side surfaces of the two first angle steels are respectively attached to the front side surface and the rear side surface of the lowest steel plate sandwich concrete slab, the top of the base is fixedly provided with embedded bolts, the tops of the embedded bolts penetrate through the bottom surfaces of the first angle steels and are screwed with locking nuts, and the connection bolts penetrate through the side surfaces of the first angle steels and the lowest steel plate sandwich concrete slab simultaneously and are screwed with locking nuts.
3. The steel plate sandwich concrete composite slab cofferdam of claim 2, wherein said third connection structure comprises a flange bolt, a flange steel plate is fixedly assembled on both the bottom of the upper steel plate sandwich concrete slab and the top of the lower steel plate sandwich concrete slab, said flange bolt penetrates both said flange steel plates and is screwed with a locking nut.
4. The steel plate sandwich concrete composite slab cofferdam of claim 3, wherein said second connection structure comprises a convex portion, said convex portion is assembled on the left side of said steel plate sandwich concrete slab, said concave cut-out with interference fit with said convex portion is provided on the right side of said steel plate sandwich concrete slab, and a reinforcing plate is provided inside said convex portion.
5. The steel plate sandwich concrete composite cofferdam of claim 3, wherein said second connection structure comprises an I-steel and a first channel, said I-steel is assembled on the left side of said steel plate sandwich concrete slab, the flange of said I-steel is parallel to the left side of said steel plate sandwich concrete slab, a pair of first channels is assembled on the right side of said steel plate sandwich concrete slab, the side edges of two of said first channels are parallel to the right side of said steel plate sandwich concrete slab, the grooves of two of said first channels are oppositely arranged, and a gap is left between two of said first channels, and the gap between two of said first channels is larger than the web thickness of said I-steel.
6. The steel plate sandwich concrete composite slab cofferdam of claim 3, wherein said second connection structure comprises connection steel plates, said connection steel plates are respectively assembled on the front side and the back side of said steel plate sandwich concrete slab, two said connection steel plates extend out of the left side of the steel plate sandwich concrete slab, two said connection steel plates are provided with bolt connection through holes, the other side of said steel plate sandwich concrete slab is provided with bolt through holes matching with the bolt connection through holes.
7. The steel plate sandwich concrete composite slab cofferdam of any one of claims 4 to 6, wherein said fourth connection structure comprises a second channel steel fitted to the side of the longitudinal composite slab, the groove of said second channel steel being interference fit with either left or right end of the transverse composite slab.
8. The steel plate sandwich concrete composite plate cofferdam of any one of claims 4 to 6, wherein said fourth connecting structure comprises two second angle steels, the bottom surfaces of both said second angle steels are assembled on the side surfaces of the longitudinal composite plate, the side surfaces of both said second angle steels are vertically arranged, a certain gap is left between the side surfaces of both said second angle steels, and the left and right ends of the transverse composite plate are in interference fit with the gap between the side surfaces of both said second angle steels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821180944.1U CN208650071U (en) | 2018-07-25 | 2018-07-25 | Sandwiched with steel plates concrete combined board cofferdam |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821180944.1U CN208650071U (en) | 2018-07-25 | 2018-07-25 | Sandwiched with steel plates concrete combined board cofferdam |
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| CN208650071U true CN208650071U (en) | 2019-03-26 |
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| CN201821180944.1U Active CN208650071U (en) | 2018-07-25 | 2018-07-25 | Sandwiched with steel plates concrete combined board cofferdam |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108643208A (en) * | 2018-07-25 | 2018-10-12 | 中铁七局集团第二工程有限公司 | Sandwiched with steel plates concrete combined board cofferdam and assembling method |
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2018
- 2018-07-25 CN CN201821180944.1U patent/CN208650071U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108643208A (en) * | 2018-07-25 | 2018-10-12 | 中铁七局集团第二工程有限公司 | Sandwiched with steel plates concrete combined board cofferdam and assembling method |
| CN108643208B (en) * | 2018-07-25 | 2024-01-16 | 中铁七局集团第二工程有限公司 | Steel plate sandwich concrete composite plate cofferdam and assembling method |
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