CN109403363A - A kind of self balance combined water-retaining cofferdam and its construction method - Google Patents
A kind of self balance combined water-retaining cofferdam and its construction method Download PDFInfo
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- CN109403363A CN109403363A CN201811529614.3A CN201811529614A CN109403363A CN 109403363 A CN109403363 A CN 109403363A CN 201811529614 A CN201811529614 A CN 201811529614A CN 109403363 A CN109403363 A CN 109403363A
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- pedestal
- water
- bottom edge
- column
- cofferdam
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/02—Restraining of open water
- E02D19/04—Restraining of open water by coffer-dams, e.g. made of sheet piles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/11—Hard structures, e.g. dams, dykes or breakwaters
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Abstract
The invention discloses a kind of self balance combined water-retaining cofferdams, including enclosing structure, support construction as made of modular unit segmented assembly, counter-force balanced structure；Each modular unit includes pedestal, column, water retaining facing；Each pedestal includes the pedestal T shape socket joint slot and pedestal T shape socket joint head for being respectively arranged at both ends, it is provided on pedestal and is respectively used to vertical columns, the installation bayonet of water retaining facing, water retaining facing limiting slot, the bottom surface of pedestal is fixedly installed pedestal plate soft rubber plate, and the pedestal side that meets water is provided with pedestal rubber Water shielding curtain；Pedestal includes bottom edge pedestal, side pedestal, corner pedestals；The cross sectional shape of bottom edge pedestal is right-angled trapezium；The cross sectional shape of side pedestal is rectangle；Corner pedestals are formed by connecting by two sections identical with the section of side pedestal and bottom edge pedestal respectively.The invention also discloses the construction methods of said combination formula water-retaining cofferdam.The present invention has very strong operability and applicability, while all transfer efficients of device can be improved.
Description
Technical field
The present invention relates to a kind of self balance combined water-retaining cofferdams, can implement fast enclosure to slope surface, to be channel
(river) side slope lining cutting panel provides dry working space.
Background technique
General large water transportation water delivery engineering route is long, along the line complex geologic conditions, and changes in environmental conditions is big, and channel easily occurs
Lining cutting panel crack, the defects of surface layer freeze-thaw damage, removing, collapsing.Currently, channel defect processing is typically all to drop both at home and abroad
Low water level operation is implemented in the case of cutting off the water, however large water transportation water delivery engineering does not have drop low water level operation generally or cuts off the water
Maintenance condition, the following canal lining panel of water surface curve is collapsed, swell and water surface curve above and below freeze-thaw damage the defects of can only use
The interim measures such as ballast bring security risk for engineering.Current existing cofferdam facility or the generally existing underwater construction of technology are difficult
The problems such as degree is big, waterstop sealing effect is poor, while general cofferdam underwater penetration limited (less than 1 meter), being only capable of every time to one piece etc.
A small number of block panels are locally repaired, and large water transportation water delivery engineering normal maintenance and maintenance demand are much unable to satisfy.Therefore, it grinds
Hair is safe and reliable, water-stagnating effect is good, disassembled combination, project cost are low, strong applicability novel combination type water blocking equipment has
Important meaning and application value.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and to provide one kind can quickly in place and removal
Combined type water-retaining cofferdam, can to channel (river) slope surface implement fast enclosure, dry working space be provided.
The present invention specifically uses following technical scheme to solve above-mentioned technical problem:
A kind of self balance combined water-retaining cofferdam, including the floor projection as made of modular unit segmented assembly are open eight words
The enclosing structure of shape or open rectangle, one group of support knot for being supported respectively to each modular unit of enclosing structure
Structure, and the counter-force balanced structure for enclosing structure integrally to be stablized and reinforced；Each module of the enclosing structure
Changing unit includes pedestal, column, water retaining facing；The weight of each pedestal is not less than 1 ton comprising is respectively arranged at both ends
Pedestal T shape socket joint slot and pedestal T shape socket joint head, be provided on pedestal be respectively used to vertical columns, water retaining facing installation bayonet,
Water retaining facing limiting slot, the bottom surface of pedestal are fixedly installed pedestal plate soft rubber plate, and the pedestal side that meets water is provided with pedestal rubber
Glue Water shielding curtain；The pedestal includes the bottom edge pedestal and side pedestal for being respectively used to the bottom edge and side of enclosing structure, Yi Jiyong
In the corner pedestals of connection bottom edge pedestal and side pedestal；The cross sectional shape of bottom edge pedestal is right-angled trapezium, the right-angled trapezium four
Sharp angle in a angle is equal to the angle between construction water channel lining cutting slope surface and horizontal plane；The cross sectional shape of side pedestal is square
Shape；Corner pedestals are formed by connecting by two sections identical with the section of side pedestal and bottom edge pedestal respectively.
Preferably, the radially opposite sides of column are separately provided for the water retaining facing limiting slot of insertion water retaining facing, column
At least one end be provided with and connect installation landing nipple with the female type that the installation bayonet of pedestal matches, be arranged on column useful
In the connection structure of connected support structure.
Preferably, the support construction includes braced bar system, plate bearing；Braced bar system is adjustable triangular structure,
Including upper links, lower link, it is set to four connection sleeves at upper links both ends and lower link both ends；Upper links
It is the solid pole that both ends are respectively arranged with rectangle lead screw transmission tooth with lower link, the section for connecting sleeve is annulus,
Inner ring is provided with rectangular inner meshing gear compatible with the rectangle lead screw transmission tooth.
Preferably, the pedestal rubber Water shielding curtain be combined by the thicker rubber slab in the upper layer rubber slab relatively thin with lower layer and
At the free flexible combination rubber slab of bilayer.It is further preferred that the upper layer of the double-deck free flexible combination rubber slab for thickness not
Rubber slab greater than 6mm, lower layer are the rubber slab that thickness is not more than 3mm.
Preferably, the main body of the water retaining facing is the plane steel facing for being provided with stiffener plate, the bottom of plane steel facing
Water sealing structure is provided on side and two sides.
It is further preferred that the water sealing structure is made of the side waterstop of back side waterstop and two sides, the sealing
Band is flexible flat rubber slab or expansion sealing strip.
Preferably, the counter-force balanced structure includes being fixedly installed on one group to construct in water channel lining cutting slope surface and can accommodating to match
The reaction box of weight, each reaction box can be connect by connecting rod with pedestal respectively.
Further, the bottom surface of reaction box is provided with the friction for increasing coefficient of friction between reaction box and side slope surface
Structure.
Further, installation positioning pipe is provided on column.
The construction method of combined type water-retaining cofferdam described in any technical solution as above, cofferdam installation process are specific as follows:
S1, bottom edge pedestal is successively lifted on side slope surface and connecting, then according to elder generation according to swimming over to the order of upstream under
Two corner pedestals and first and the last one bottom edge pedestal are separately connected by the order in downstream behind upstream, finally according to upstream
Side pedestal is installed with interlocking one section one section of along order with downstream；
S2, column is sequentially inserted into the installation bayonet of the column on mounted pedestal according to the sequence for being from upstream to downstream,
Then support construction is installed；
S3, by the pedestal being connected and column Xiang Shuizhong synchronous push into water at predetermined depth；
S4, water retaining facing is sequentially inserted into each column limiting slot according to the sequence for being from upstream to downstream；
S5, setting counter-force balanced structure；
S6, the water on the inside of enclosing structure is discharged outward, until cofferdam good seal, without obvious percolating water；
Cofferdam disassembly process is specific as follows:
After the completion of S7, operation, according to first downstream side water retaining facing, then bottom edge water retaining facing, last upstream side water retaining facing
Sequence successively hangs out water retaining facing；
S8, according to first downstream heel post, then bottom edge column, the sequence of last upstream heel post successively hangs out column；
S9, synchronization remove pedestal after pulling up pedestal to side slope top of the slope.
Compared with prior art, technical solution of the present invention has the advantages that
Combined type water-retaining cofferdam of the present invention blocks water curtain in the different free flexible combination rubber slab of bilayer of chassis side setting thickness,
The feature that rubber slab using thickness no more than 3mm posts, lap gap is small forms water blocking layer, is not more than 6mm using thickness
Rubber slab self-strength is big, limit fixing layer that feature that anti-flow performance is strong is as underlying rubber water blocking layer, base bottom is set
Flexible water stop is set, lower automatic paste tightening canal slope is acted on by self weight, water pressure and water flow pressure, slope surface can be well adapted to not
It is flat, reach the purpose that blocks water；Between pedestal and pedestal of the present invention use T-type bindiny mechanism, between T-type socket joint head and T-type socket joint slot according to
Cooperate precision between component and is mutually twisted relationship, labyrinth sealing；Slot is used between water retaining facing and pedestal, column of the invention
Type structure and plane cooperation, soft flat rubber is installed between plane, is realized between cofferdam column and water retaining facing and pedestal
Sealing between water retaining facing.The above-mentioned Water stop mechanism combined plays good sealing effect.It installed in cofferdam of the present invention
Journey does not need heavy construction equipment, can satisfy different length of slope, different underwater penetrations and different slope coefficient construction demands,
And it is safe and reliable, water-stagnating effect is good, disassembled combination, project cost are low, overcome previous cofferdam sealing and form the operation of dry ground
The technical problems such as equipment anti-floating, upper cunning, underwater penetration be small afterwards have very strong operability and applicability, while can shorten cofferdam
In place, disassembly and assembly time, simplify operating procedure, saved the operating time, shorten the construction period, improve all transfer efficients of device.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of one preferred embodiment of combined type water-retaining cofferdam of the present invention；
Fig. 2 is schematic diagram of base structure；
Fig. 3 is pillar construction schematic diagram；
Fig. 4 is water retaining facing structural schematic diagram；
Fig. 5 is the structural schematic diagram of support construction；
Fig. 6 is the structural schematic diagram of counter-force balanced structure；
The meaning of each appended drawing reference is specific as follows in figure:
1, enclosing structure, 2, support construction, 3, counter-force balanced structure；11, pedestal, 12, column, 13, water retaining facing；21, it supports
Leverage, 22, plate bearing；31, reaction box, 32, connecting rod, 33, mass, 34, plate soft rubber plate；111, pedestal T shape
Socket joint slot, 112, pedestal T shape socket joint head, 113, column installation card, 114, water retaining facing limiting slot, 115, the soft rubber of pedestal plate
Offset plate, 116, pedestal rubber Water shielding curtain, 117, hanging ring；121, water retaining facing limiting slot, 122, female type connection installation positioning connect
Head, 123, support hole location, 124, installation positioning pipe；131, plane steel facing, 132, stiffener plate, 133, side waterstop,
134, back side waterstop；221, plate bearing, 211, upper links, 212, lower link, 213, connection sleeve.
Specific embodiment
In view of the shortcomings of the prior art, thinking of the invention is by the way of piecewise combination, by pedestal self weight while in fact
Existing anti-floating, antiskid and good water-stagnating effect, and support construction and counter-force balanced structure is combined to realize the firm of cofferdam；Pass through
The double-deck free flexible combination rubber slab of chassis side setting blocks water curtain, and flexible water stop is arranged in base bottom, by being self-possessed, water pressure
And water flow pressure acts on lower automatic paste tightening canal slope, reaches the purpose that blocks water, is realized by the T-type bindiny mechanism between pedestal and pedestal
Good sealing is cooperated by trench structure used between water retaining facing and pedestal, column and plane, is installed between plane soft
Matter flat rubber, is realized between cofferdam column and water retaining facing and the sealing between pedestal and water retaining facing.
Specifically, self balance combined water-retaining cofferdam proposed by the invention, including by modular unit segmented assembly
Made of floor projection be open splayed or open rectangle enclosing structure, for being carried out respectively to each segmentation of enclosing structure
One group of support construction of support, and the counter-force balanced structure for enclosing structure integrally to be stablized and reinforced；It is described to enclose
The each segmentation for keeping off structure includes pedestal, column, water retaining facing；The weight of each pedestal is not less than 1 ton comprising sets respectively
It is placed in the pedestal T shape socket joint slot and pedestal T shape socket joint head at both ends, is provided on pedestal and is respectively used to vertical columns, water retaining facing
Installation bayonet, water retaining facing limiting slot, the bottom surface of pedestal is fixedly installed pedestal plate soft rubber plate, and the pedestal side that meets water is set
It is equipped with pedestal rubber Water shielding curtain；The pedestal includes the bottom edge pedestal and side edge bottom for being respectively used to the bottom edge and side of enclosing structure
Seat, and the corner pedestals for connecting bottom edge pedestal and side pedestal；The cross sectional shape of bottom edge pedestal is right-angled trapezium, this is straight
Sharp angle in trapezoidal four angles in angle is equal to the angle between construction water channel lining cutting slope surface and horizontal plane；The section shape of side pedestal
Shape is rectangle；Corner pedestals are formed by connecting by two sections identical with the section of side pedestal and bottom edge pedestal respectively.
The construction method of the combined type water-retaining cofferdam, cofferdam installation process are specific as follows:
S1, bottom edge pedestal is successively lifted on side slope surface and connecting, then according to elder generation according to swimming over to the order of upstream under
Two corner pedestals and first and the last one bottom edge pedestal are separately connected by the order in downstream behind upstream, finally according to upstream
Side pedestal is installed with interlocking one section one section of along order with downstream；
S2, column is sequentially inserted into the installation bayonet of the column on mounted pedestal according to the sequence for being from upstream to downstream,
Then support construction is installed；
S3, by the pedestal being connected and column Xiang Shuizhong synchronous push into water at predetermined depth；
S4, water retaining facing is sequentially inserted into each column limiting slot according to the sequence for being from upstream to downstream；
S5, setting counter-force balanced structure；
S6, the water on the inside of enclosing structure is discharged outward, until cofferdam good seal, without obvious percolating water；
Cofferdam disassembly process is specific as follows:
After the completion of S7, operation, according to first downstream side water retaining facing, then bottom edge water retaining facing, last upstream side water retaining facing
Sequence successively hangs out water retaining facing；
S8, according to first downstream heel post, then bottom edge column, the sequence of last upstream heel post successively hangs out column；
S9, synchronization remove pedestal after pulling up pedestal to side slope top of the slope.
For convenient for public understanding, below with a preferred embodiment and in conjunction with attached drawing come to technical solution of the present invention carry out into
One step is described in detail:
As shown in Figure 1, it is open eight words that the combined type water-retaining cofferdam in the present embodiment, which includes floor projection made of segmented assembly,
The enclosing structure 1 of shape or open rectangle, one group of support knot for being supported respectively to each modular unit of enclosing structure 1
Structure 2, and for the whole counter-force balanced structure 3 stablized and reinforced of enclosing structure 1.The base width in cofferdam and enter water
Depth can be adjusted flexibly by different modular unit quantity.
Each modular unit of enclosing structure 1 includes pedestal 11, column 12, water retaining facing 13.As shown in Figure 1, bottom
11 points of seat are three kinds, respectively the bottom edge pedestal and side pedestal for the bottom edge of enclosing structure 1 and side, and for connecting
The corner pedestals of bottom edge pedestal and side pedestal；The cross sectional shape of bottom edge pedestal is right-angled trapezium, in four angles of the right-angled trapezium
Sharp angle be equal to construction channel or river lining cutting slope surface and horizontal plane between angle；The cross sectional shape of side pedestal is square
Shape；Corner pedestals are formed by connecting by two sections identical with the section of side pedestal and bottom edge pedestal respectively.
As shown in Fig. 2, not less than 1 ton of the weight of each pedestal 11 (single-base weight is 1800kg in the present embodiment),
It includes the pedestal T shape socket joint slot 111 and pedestal T shape socket joint head 112 for being respectively arranged at both ends, is provided on pedestal 11 and uses respectively
In vertical columns 12, the installation bayonet 113 of water retaining facing 13, water retaining facing limiting slot 114, the bottom surface of pedestal 11 is fixedly installed
Pedestal plate soft rubber plate 115, the side that meets water of pedestal 11 are provided with pedestal rubber Water shielding curtain 116(in order to easy for construction, can also
All it is arranged with the two sides in pedestal 11).In order to obtain better water-stagnating effect, it is preferred through many experiments discovery double-deck free
Flexible combination rubber slab, i.e., the described pedestal rubber Water shielding curtain 116 by upper layer thicker (thickness is desirably no more than 6mm) rubber slab with
The rubber slab of lower layer's relatively thin (thickness is desirably no more than 3mm) is freely combined, so as to be not more than the rubber of 3mm using thickness
Plate posts, lap gap is small feature forms water blocking layer, and the rubber slab self-strength using thickness no more than 6mm is big, anti-current
Limit fixing layer of the strong feature of performance as underlying rubber water blocking layer, and then obtain good water-stagnating effect.When specific processing,
The pedestal that is fixed on one side of thick rubber slab and Thin rubber plate need to only be met water side bottom position.Pedestal rubber in the present embodiment
Glue Water shielding curtain 116 uses the free flexible combination rubber slab of bilayer of lower layer 3mm+ upper layer 6mm.In addition, for the ease of lifting, pedestal
One group of hanging ring 117 is additionally provided on 11.
As shown in figure 3, the radially opposite sides of column 12 are separately provided for the water retaining facing limit of insertion water retaining facing 13
Slot 121, at least one end of column 12 is provided with connect with the female type that the installation bayonet 113 of pedestal 11 matches installation positioning connect
First 122, the support hole location 123 for connected support structure 2 is provided on column 12.Positioning when for the ease of cofferdam installation,
Installation positioning pipe 124 is additionally provided on column 12 in the present embodiment.The section of column 12 can use round, rectangular or rectangle
It is easy to form limit in base holes Deng, rectangular or rectangle steel, guarantees relatively accurate installation site, but need to pass through circle
Steel mill out four planes, need very big processing capacity.And circular steel is directlyed adopt as column and only needs to install in pedestal
Position locally mills out limit plane, and processes limiting slot in side, it is possible to reduce processing capacity, therefore column 12 is preferably using circle
Section.
As shown in figure 4, the main body of water retaining facing 13 is the plane steel facing 131 for being provided with stiffener plate 132, flat steel face
It is provided with water sealing structure in the bottom edge of plate 131, two sides and dorsal edge, water sealing structure is by the back side described in the present embodiment
Waterstop 134 and two sides side and bottom surface waterstop 133 form, and the waterstop preferably uses flexible flat rubber slab or swollen
Swollen sealing rod.
As shown in figure 5, the support construction 2 includes braced bar system 21, plate bearing 22；Braced bar system 21 is adjustable three
Corner structure comprising upper links 211, lower link 212, and it is set to 211 both ends of upper links and 212 liang of lower link
Four connection sleeves 213 at end；Upper links 211 and lower link 212 are that both ends are respectively arranged with rectangle lead screw transmission tooth
Solid cylinder, the section of connection sleeve 213 is annulus, and inner ring is provided with square compatible with the rectangle lead screw transmission tooth
Shape internal tooth.
The support construction 2 can guarantee the stability of column and water fender, but when pedestal and side slope contact condition are poor,
May be too small because of frictional force, the whole passage upwards in cofferdam, or since local slope sedimentation is difficult to support, asked to solve this
Topic, the present invention are devised for the whole counter-force balanced structure 3 stablized and reinforced of enclosing structure 1.As shown in fig. 6, this
Counter-force balanced structure 3 includes the reaction box 31 that one group be fixedly installed on side slope surface can accommodate mass 33 in embodiment,
Each reaction box 31 can be connect by connecting rod 32 with pedestal 11 respectively.It is ingenious in the present embodiment to use reaction box along side slope surface
Partical gravity obliquely resists the bottom edge pedestal suffered thrust upward along side slope under water, in order to further such that whole knot
Structure is stablized, and the friction knot for increasing coefficient of friction between reaction box 31 and side slope surface can be arranged in the bottom surface of reaction box 31
Structure, such as the bottom surface of reaction box 31 can be made to decorative pattern, it is soft using the plate for being fixed on 31 bottom surface of reaction box in the present embodiment
Rubber slab 34 rubs to increase.
The concrete construction method in above-mentioned cofferdam includes:
Step 1 pops up a bottom edge pedestal installation base directrix at adjoined water surface line position using horizontal tube and tape measure surely, simultaneously
Divide every section bottom edge base mounting orientation line；
First segment bottom edge pedestal lifting in downstream is transported near installation site by step 2 with crane, is hung using horizontal ruler and every
Flower basket bolt on rope accurately adjusts pedestal posture, then hangs on canal slope panel in place bottom edge pedestal, uses angle measurement
Tool carries out longitudinal and transverse direction angle of bank measurement to manned bottom edge pedestal and records deviation scale, then is lifted by crane in advance by crane
Tight lifting rope readjusts each lifting rope length using flower basket bolt according to each lifting rope tightness, and keep it is elastic it is consistent after by hook
The suspension hook hung on pedestal hanging ring is removed, and the second section of socket joint bottom edge pedestal is then lifted；
Step 3 repeats step 2, installs bottom edge pedestal one by one；
Step 4 lifts upstream corner pedestals, and connect with upstream first segment bottom edge pedestal socket joint；
Step 5 lifts downstream corner pedestals, and connect with downstream final section bottom edge pedestal socket joint；
Upstream first segment right edge pedestal is lifted, and connect with upstream corner pedestals socket joint by step 6；
Downstream first segment left side pedestal is lifted, and connect with downstream corner pedestals socket joint by step 7；
Step 8 repeats step 6 ~ 7, installs side pedestal one by one；
Column is sequentially inserted into mounted pedestal upright post installation bayonet by step 9 according to the sequence in downstream behind first upstream；
Step 10, installation supporting bar structure；
Step 11, diving operation, by cofferdam below water surface curve surround mudcake giant that canal slope panel in range adheres to or
Spatula is removed；
Step 12, with the jack and mandril synchronous push upstream first segment and downstream final section pedestal for being fixed on canal top, will
The pedestal and column Xiang Shuizhong pushing tow being connected, pushing tow measure pushing tow stroke in the process, and control two sides pushing tow is synchronous；
Step 13 repeats step 12, will be in place at whole pedestals and column pushing tow to predetermined depth；
Step 14, assembled floating drum, the water surface in cofferdam are all paved with and installs railing form operating platform waterborne；
Step 15 is opposed to the column in water according to design size on operating platform on the water and measures correction, and uses water
It is positioned in flushconnection bar insertion column side positioning pipe；
Step 16, by water retaining facing since being sequentially inserted into from top to bottom the panel of upstream side in each column limiting slot；
Reaction box connect with upstream and downstream side pedestal, and loads mass by step 17；
The water on the inside of enclosing structure is discharged outward for step 18, unlatching water pump, until cofferdam good seal, without obvious leakage
Water；
After the completion of step 19, operation, water pump is hung out, assembles Overwater floating platform；
Step 20, according to first downstream side water retaining facing, then bottom edge water retaining facing, the sequence of last upstream side water retaining facing is successively
Water retaining facing is hung out；
Step 21, according to first downstream heel post, then bottom edge column, the sequence of last upstream heel post successively ties column and support
Structure is hung out together；
Step 22 removes operating platform waterborne；
Two step 23, starting hoist engine synchronizations pull up pedestal, and pedestal is removed；
Each component of combined type water-retaining cofferdam is transported to next construction location by step 24.
Combined type water-retaining cofferdam installation process of the invention does not need heavy construction equipment, and it is long to can satisfy different side slopes
Degree, different underwater penetration and different slope coefficients are constructed demand, and it is safe and reliable, water-stagnating effect is good, disassembled combination, engineering are made
Valence is low, overcomes previous cofferdam sealing and forms the technical problems such as equipment anti-floating after dry ground operation, antiskid, underwater penetration be small, tool
There are very strong operability and applicability, while in place, the disassembly and assembly time in cofferdam can be shortened, simplifies operating procedure, saved behaviour
Make the time, shorten the construction period, improves all transfer efficients of device.The composite can be widely applied to similar water channel, dykes and dams has lining in this way
The hydraulic engineering for building slope surface, has a good application prospect.
Claims (10)
1. a kind of self balance combined water-retaining cofferdam, which is characterized in that including the level as made of modular unit segmented assembly
Be projected as the enclosing structure (1) of open splayed or open rectangle, for enclosing structure (1) each modular unit respectively into
One group of support construction (2) of row support, and the counter-force balanced structure for enclosing structure (1) integrally to be stablized and reinforced
(3)；Each modular unit of the enclosing structure (1) includes pedestal (11), column (12), water retaining facing (13)；Each
The weight of pedestal (11) is not less than 1 ton comprising is respectively arranged at the pedestal T shape socket joint slot (111) and pedestal T shape socket joint at both ends
Head (112) is provided with installation bayonet (113), the water blocking for being respectively used to vertical columns (12), water retaining facing (13) on pedestal (11)
Panel limiting slot (114), the bottom surface of pedestal (11) are fixedly installed pedestal plate soft rubber plate (115), and pedestal (11) are met
Water side is provided with pedestal rubber Water shielding curtain (116)；The pedestal (11) includes the bottom edge and side for being respectively used to enclosing structure (1)
Bottom edge pedestal and side pedestal, and corner pedestals for connecting bottom edge pedestal and side pedestal；The section of bottom edge pedestal
Shape is right-angled trapezium, and the sharp angle in four angles of the right-angled trapezium is equal to the folder between construction water channel lining cutting slope surface and horizontal plane
Angle；The cross sectional shape of side pedestal is rectangle；Corner pedestals are by respectively identical with the section of side pedestal and bottom edge pedestal two
Section is formed by connecting.
2. self balance combined water-retaining cofferdam as described in claim 1, which is characterized in that the radially opposite sides of column (12) are set respectively
It is equipped with the water retaining facing limiting slot (121) for being inserted into water retaining facing (13), at least one end of column (12) is provided with and pedestal
(11) female type connection installation landing nipple (122) that installation bayonet (113) matches, column are provided on (12) for connecting
The connection structure of structure for welding and supporting (2).
3. self balance combined water-retaining cofferdam as described in claim 1, which is characterized in that the support construction (2) includes support
Leverage (21), plate bearing (22)；Braced bar system (21) is adjustable triangular structure comprising upper links (211), lower part connect
Bar (212), and it is set to four connection sleeves (213) at upper links (211) both ends and lower link (212) both ends；On
Portion's connecting rod (211) and lower link (212) are the solid cylinder that both ends are respectively arranged with rectangle lead screw transmission tooth, connect sleeve
(213) section is annulus, and inner ring is provided with rectangular inner meshing gear compatible with the rectangle lead screw transmission tooth.
4. self balance combined water-retaining cofferdam as described in claim 1, which is characterized in that the pedestal rubber Water shielding curtain (116)
For the free flexible combination rubber slab of bilayer being composed of the thicker rubber slab in upper layer and the relatively thin rubber slab of lower layer.
5. self balance combined water-retaining cofferdam as described in claim 1, which is characterized in that the main body of the water retaining facing (13) is
It is provided with the plane steel facing (131) of stiffener plate (132), is respectively provided on the bottom edge of plane steel facing (131) and two sides
There is water sealing structure.
6. self balance combined water-retaining cofferdam as claimed in claim 5, which is characterized in that the water sealing structure is by back side waterstop
(134) and the side waterstop (133) of two sides composition, the waterstop are flexible flat rubber slab or expansion sealing strip.
7. self balance combined water-retaining cofferdam as described in claim 1, which is characterized in that the counter-force balanced structure (3) includes
One group be fixedly installed on side slope surface can accommodate the reaction box (31) of mass, and each reaction box (31) can pass through company respectively
Extension bar (32) is connect with pedestal (11).
8. self balance combined water-retaining cofferdam as claimed in claim 7, which is characterized in that the bottom surface setting of reaction box (31) is useful
In the friction structure for increasing coefficient of friction between reaction box (31) and side slope surface.
9. self balance combined water-retaining cofferdam as described in claim 1, which is characterized in that be provided with installation positioning on column (12)
It manages (124).
10. such as the construction method of any one of the claim 1 ~ 9 combined type water-retaining cofferdam, which is characterized in that installed in cofferdam
Journey is specific as follows:
S1, bottom edge pedestal is successively lifted on side slope surface and connecting, then according to elder generation according to swimming over to the order of upstream under
Two corner pedestals and first and the last one bottom edge pedestal are separately connected by the order in downstream behind upstream, finally according to upstream
Side pedestal is installed with interlocking one section one section of along order with downstream；
S2, column is sequentially inserted into the installation bayonet of the column on mounted pedestal according to the sequence for being from upstream to downstream,
Then support construction is installed；
S3, by the pedestal being connected and column Xiang Shuizhong synchronous push into water at predetermined depth；
S4, water retaining facing is sequentially inserted into each column limiting slot according to the sequence for being from upstream to downstream；
S5, setting counter-force balanced structure；
S6, the water on the inside of enclosing structure is discharged outward, until cofferdam good seal, without obvious percolating water；
Cofferdam disassembly process is specific as follows:
After the completion of S7, operation, according to first downstream side water retaining facing, then bottom edge water retaining facing, last upstream side water retaining facing
Sequence successively hangs out water retaining facing；
S8, according to first downstream heel post, then bottom edge column, the sequence of last upstream heel post successively hangs out column；
S9, synchronization remove pedestal after pulling up pedestal to side slope top of the slope.
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| CN201811529614.3A CN109403363B (en) | 2018-12-14 | 2018-12-14 | Self-balancing combined water retaining cofferdam and construction method thereof |
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Cited By (4)
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|---|---|---|---|---|
| CN111851542A (en) * | 2020-07-31 | 2020-10-30 | 华北水利水电大学 | Self-sinking combined steel cofferdam for channel side slope maintenance |
| CN111997074A (en) * | 2020-08-20 | 2020-11-27 | 山西四建集团有限公司 | Interim assembled concrete retaining platform subassembly |
| CN112459012A (en) * | 2020-11-16 | 2021-03-09 | 河北省水利工程局 | Canal lining plate repairing method |
| CN114839357A (en) * | 2022-03-25 | 2022-08-02 | 河海大学 | Device and method for testing frost heaving stress and frost heaving strain of porous asphalt mixture |
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| JP2011208389A (en) * | 2010-03-29 | 2011-10-20 | Nippon Steel & Sumikin Metal Products Co Ltd | Self-standing cofferdam structure and self-standing cofferdam method |
| CN106193074A (en) * | 2016-07-14 | 2016-12-07 | 长江勘测规划设计研究有限责任公司 | The steel cofferdam repaired for channel |
| CN107780423A (en) * | 2017-11-24 | 2018-03-09 | 河南水建集团有限公司 | Adjustable water cofferdam |
| CN108166515A (en) * | 2017-12-29 | 2018-06-15 | 华北水利水电大学 | A kind of waterpower self-stabilization type underwater construction cofferdam |
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| JP2011208389A (en) * | 2010-03-29 | 2011-10-20 | Nippon Steel & Sumikin Metal Products Co Ltd | Self-standing cofferdam structure and self-standing cofferdam method |
| CN106193074A (en) * | 2016-07-14 | 2016-12-07 | 长江勘测规划设计研究有限责任公司 | The steel cofferdam repaired for channel |
| CN107780423A (en) * | 2017-11-24 | 2018-03-09 | 河南水建集团有限公司 | Adjustable water cofferdam |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111851542A (en) * | 2020-07-31 | 2020-10-30 | 华北水利水电大学 | Self-sinking combined steel cofferdam for channel side slope maintenance |
| CN111997074A (en) * | 2020-08-20 | 2020-11-27 | 山西四建集团有限公司 | Interim assembled concrete retaining platform subassembly |
| CN112459012A (en) * | 2020-11-16 | 2021-03-09 | 河北省水利工程局 | Canal lining plate repairing method |
| CN114839357A (en) * | 2022-03-25 | 2022-08-02 | 河海大学 | Device and method for testing frost heaving stress and frost heaving strain of porous asphalt mixture |
| CN114839357B (en) * | 2022-03-25 | 2023-05-16 | 河海大学 | Device and method for testing frost heaving stress and frost heaving strain of porous asphalt mixture |
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| CN109403363B (en) | 2023-09-05 |
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