CN114482100B - Reinforcing structure of cofferdam and construction method - Google Patents
Reinforcing structure of cofferdam and construction method Download PDFInfo
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- CN114482100B CN114482100B CN202210198424.8A CN202210198424A CN114482100B CN 114482100 B CN114482100 B CN 114482100B CN 202210198424 A CN202210198424 A CN 202210198424A CN 114482100 B CN114482100 B CN 114482100B
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- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 11
- 238000010276 construction Methods 0.000 title abstract description 13
- 230000007246 mechanism Effects 0.000 claims abstract description 29
- 238000009434 installation Methods 0.000 claims description 27
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 23
- 239000010962 carbon steel Substances 0.000 claims description 23
- 239000002344 surface layer Substances 0.000 claims description 10
- 230000000087 stabilizing effect Effects 0.000 claims description 8
- 238000004080 punching Methods 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 6
- 238000007493 shaping process Methods 0.000 abstract description 4
- 239000002689 soil Substances 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 229910000831 Steel Inorganic materials 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- 230000009471 action Effects 0.000 description 6
- 238000003466 welding Methods 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 208000005156 Dehydration Diseases 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 241000276425 Xiphophorus maculatus Species 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
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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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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/02—Sheet piles or sheet pile bulkheads
- E02D5/03—Prefabricated parts, e.g. composite sheet piles
- E02D5/04—Prefabricated parts, e.g. composite sheet piles made of steel
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/10—Miscellaneous comprising sensor means
Abstract
The invention discloses a reinforcing structure of a cofferdam and a construction method thereof, and relates to the technical field of cofferdam construction. The base mechanism is installed before the cofferdam, can limit or guide the cofferdam when the cofferdam is installed, assist the cofferdam shaping, select the pipe to pour the underwater concrete, when the underwater concrete shaping, can effectively consolidate the cofferdam. This application has the effect that improves cofferdam steadiness.
Description
Technical Field
The invention relates to the technical field of cofferdam construction, in particular to a reinforcing structure of a cofferdam and a construction method.
Background
Larson steel sheet piles, also called U-shaped steel sheet piles, play an important role in projects such as retaining walls, embankment protection and the like in wharfs and unloading yards, and play an important role in retaining soil, water and sand during bridge construction cofferdams, large-scale pipeline laying and temporary trench excavation. The Larson steel sheet pile cofferdam is not only green and environment-friendly, but also has the advantages of high construction speed, low construction cost and good waterproof function.
When the Larson steel sheet pile cofferdam is constructed, because of poor soil conditions, such as large soil moisture content below a riverbed, large pores and the like, larson steel sheet piles which are driven into the riverbed are easy to topple, and the use is affected.
Disclosure of Invention
In order to improve stability of the Larson steel sheet pile cofferdam, the application provides a reinforcing structure of the cofferdam and a construction method.
The reinforcing structure of the cofferdam comprises a base mechanism which sinks to a riverbed, an annular belt for the cofferdam to penetrate is formed between the base mechanism and the riverbed, underwater concrete is poured in the annular belt, and the cofferdam penetrates through the underwater concrete.
Through adopting above-mentioned technical scheme, lassen steel sheet pile head and tail interlock in proper order and circumference closure form the cofferdam, and base mechanism installs before the cofferdam, can carry out spacing or direction to Lassen steel sheet pile when the cofferdam is installed, supplementary cofferdam shaping. The guide pipe is selected for pouring the underwater concrete, so that the cofferdam can be effectively reinforced and the stability of the cofferdam is improved when the underwater concrete is formed.
Optionally, the fixing device further comprises a fixing mechanism, the fixing mechanism comprises a supporting component, the supporting component comprises an enclosing purlin, a mounting rod and an inclined block arranged on the mounting rod, the enclosing purlin and the mounting rod are relatively arranged on the inner side wall of the cofferdam at intervals, and the inclined plane of the enclosing purlin is abutted against the inclined plane of the inclined block.
Through adopting above-mentioned technical scheme, will enclose purlin and installation pole and install the inside wall at the cofferdam respectively, make cofferdam and installation pole interval setting, and the inclined plane of sloping block keeps supporting tight state with the inclined plane that encloses the purlin, when the inside needs of cofferdam drainage, the inside water stress of cofferdam reduces, form stress difference with the outside water stress of cofferdam, so cofferdam upper portion is easy to the cofferdam intussuseption, enclose the purlin also along with crooked, under the barrier effect on sloping block inclined plane, can effectively delay and enclose the purlin displacement, and then weaken cofferdam upper portion crooked, and improve the steadiness of cofferdam, enclose the purlin simultaneously, installation pole and sloping block's setting, also improved cofferdam structural system's regulating ability, regulating ability is that the cofferdam, support and hold tight subassembly and the ability that draws the subassembly between possess adaptive displacement, and adjust whole balanced atress through adaptive displacement.
Optionally, the base mechanism comprises two concrete ring seats which are arranged at intervals from inside to outside, and the ring belt is positioned between the two concrete ring seats;
the stabilizing mechanism further comprises a rope pulling assembly, one end of the rope pulling assembly is connected with the concrete ring seat on the inner side of the cofferdam, and the other end of the rope pulling assembly drives the inclined block to abut against the surrounding purlin and then is fixedly arranged on the outer portion of the cofferdam.
Through adopting above-mentioned technical scheme, when pouring concrete under water, concrete ring seat can act as the template, reduces rivers and strikes concrete under water, improves concrete under water and pours shaping quality, and then stabilizes the cofferdam jointly with concrete ring seat, and the inside building of cofferdam is accomplished the back, and concrete ring seat can protect the building, blocks riverbed silt siltation at the building perisporium for example.
Optionally, the rope pulling assembly comprises a carbon steel wire rope and an anchor rod, the anchor rod is positioned on a concrete ring seat outside the cofferdam, one end of the carbon steel wire rope is arranged on the concrete ring seat inside the cofferdam, and the other end of the carbon steel wire rope is connected with the anchor rod;
the installation rod is rotationally connected with the inner side of the cofferdam, the installation rod is fixedly provided with a traction wheel, the carbon steel wire rope is in a straight state, and the carbon steel wire rope is fixed and wound on the traction wheel.
Through adopting above-mentioned technical scheme, when the upper portion of cofferdam is crooked to inside, because the relation that links to each other is rotated with the cofferdam because of the installation pole, so the installation pole only has the effect of blockking in a certain extent, and carbon steel wire rope can delay the rigidity that the cofferdam crooked produced to destroy because of the toughness of itself, and when carbon steel wire rope relaxes simultaneously, can use the jack to pretension it.
Optionally, the installation pole perisporium rotates and is equipped with the sleeve, the sleeve is fixed in cofferdam inside wall, just the installation pole tip is equipped with the torsional spring, the one end that the torsional spring kept away from the installation pole supports tightly with the cofferdam.
Through adopting above-mentioned technical scheme, the torsional spring can cushion the power that installation pole axial received on the one hand, improves the axial stability of installation pole, and on the other hand when the relative sleeve of installation pole rotated, the torsional spring had the effect that makes the installation pole reset to cooperate the jack to the carbon steel wire rope pretension action after the relaxation.
Optionally, a cross bar is welded between the anchor rod and the cofferdam.
Through adopting above-mentioned technical scheme, the horizontal pole can improve the connectivity between concrete ring, stock and the cofferdam, improves the wholeness of cofferdam.
Optionally, the caulking groove has been seted up towards one side of enclosing the purlin to the sloping block, be equipped with pressure sensor in the caulking groove, pressure sensor electricity is connected with the alarm control piece, enclose the inclined plane top of purlin and offset with pressure sensor.
Through adopting above-mentioned technical scheme, when cofferdam upper portion bending, enclose the purlin along with together crooked, enclose the inclined plane top of purlin and rotate around enclosing purlin and sloping block offseting department, and then to the pressure value that pressure sensor produced be increasing, when the pressure value reached the fixed value of establishing in the pressure sensor, alarm control piece began to warn the cofferdam and had the trend of deformation upset.
The construction method of the reinforcing structure of the cofferdam comprises the following steps:
s1, positioning a cofferdam, vibrating and flushing the surface layer of a river bed, and leveling the river bed;
s2, installing a base mechanism, sinking the base mechanism to a riverbed, and punching a cofferdam into the bottom of the annular belt;
s3, pouring underwater concrete, namely pouring the underwater concrete between the annular belt and the cofferdam;
s4, after the cofferdam is used, crushing underwater concrete, pulling out the cofferdam and recycling.
By adopting the technical scheme, the surface layer of the river bed is uneven, so that the leveling is performed in an underwater vibroflotation mode, the vibroflotation treatment is performed on the surface layer of the river bed, the balance of the soil quality of the surface layer of the river bed is improved, the flatness and the stability of the base mechanism during installation are further improved, meanwhile, the balanced nominal soil quality of the river bed is beneficial to the consolidation of underwater concrete, and the connectivity and the stability between the underwater concrete and the river bed are improved.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the base mechanism is installed before the cofferdam, and can limit or guide Lasen steel sheet piles during cofferdam installation to assist cofferdam forming. The guide pipe is selected for pouring the underwater concrete, and when the underwater concrete is formed, the cofferdam can be effectively reinforced;
2. under the blocking effect of the inclined plane of the inclined block, the displacement of the enclosing purlin can be effectively delayed, the bending of the upper part of the cofferdam is further weakened, the stability of the cofferdam is improved, and meanwhile, the arrangement of the enclosing purlin, the mounting rod and the inclined block also improves the adjusting capability of a cofferdam structure system;
3. the torsional spring can cushion the axial force that the installation pole receives on the one hand, improves the axial stability of installation pole, and on the other hand when the relative sleeve of installation pole rotates, the torsional spring has the effect that makes the installation pole reset.
Drawings
FIG. 1 is a schematic view of the overall structure of the cofferdam and the embodiment of the present application;
fig. 2 is a schematic structural view of a tightening assembly according to an embodiment of the present application.
Reference numerals illustrate: 1. a cofferdam; 2. an endless belt; 3. underwater concrete;
4. a tightening assembly; 41. enclosing purlin; 42. a mounting rod; 43. a sloping block; 431. a caulking groove; 432. a mounting groove; 44. traction wheels; 45. a sleeve; 46. a torsion spring; 47. a pressure sensor; 48. an alarm control member;
5. a concrete ring seat;
6. a rope pull assembly; 61. a carbon steel wire rope; 62. a bolt; 63. a cross bar.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-2.
The embodiment of the application discloses reinforced structure of cofferdam, refer to fig. 1, 2, and it includes the base unit that sinks to the riverbed and connects base unit and the firm mechanism of cofferdam 1 respectively, and base unit includes two concrete ring seat 5 that from inside to outside interval placed in proper order, is formed with closed annular area 2 between two concrete ring seat 5 opposite sides and the riverbed top layer. The cofferdam 1 passes through the annular belt 2 from the upper part of the annular belt 2 and is erected into a riverbed soil layer, and because of poor riverbed soil quality conditions, the concrete annular seat 5 can effectively assist the vertical capacity of the cofferdam 1 kept during insertion and beating, the underwater concrete 3 is poured and formed between the annular belt 2, the riverbed surface layer and the cofferdam 1, and when the structural strength of the underwater concrete 3 is stable, the stability of the cofferdam 1 is improved, and the overturning of the cofferdam 1 caused by unbalanced stress is reduced. The unbalanced stress mainly means that the relationship between the action of the riverbed on the cofferdam 1 and the action of the water body on the cofferdam 1 is easy to change, and the reasons for the change are that the soil quality of the riverbed is poor, the depth and the flow of water, the discharge of the water body in the cofferdam 1 and the like.
The cofferdam 1 is arranged in a rectangular shape. The stabilizing mechanisms are four groups, wherein two groups of stabilizing mechanisms are relatively arranged in parallel, the other two groups of stabilizing mechanisms are also relatively arranged in parallel, and the two adjacent groups of stabilizing mechanisms are vertically staggered and are vertical. Simultaneously, every stabilizing mean all fixed connection is in the three sides of cofferdam 1 to realize improving cofferdam 1's wholeness.
The stabilizing mechanism comprises two groups of abutting assemblies 4 and two groups of rope pulling assemblies 6, wherein the two groups of rope pulling assemblies 4 are arranged at intervals up and down, and each abutting assembly 4 is fixedly connected to the three-side inner walls of the cofferdam 1 respectively. One end of each rope pulling component 6 is fixed on a concrete ring seat 5 positioned in the cofferdam 1, the other end of each rope pulling component 6 is fixed on the concrete ring seat 5 positioned outside the cofferdam 1, and the cofferdam 1 can be stably maintained in an adjustable mode under the action among the rope pulling component 6, the abutting component 4 and the cofferdam 1.
The abutting assembly 4 comprises an enclosing purlin 41, a mounting rod 42, inclined blocks 43 and sleeves 45, wherein two sleeves 45 are arranged, the axes of the two sleeves 45 are located at the same height, the open ends of the two sleeves are arranged in opposite directions, the closed ends of the two sleeves 45 are respectively welded on the inner walls of two opposite sides of the cofferdam 1, and the end parts of the mounting rod 42 are respectively connected with the inner walls of the two sleeves 45 in a rotating mode. The enclosing purlin 41 is platy, and enclosing purlin 41 one side welded connection is in cofferdam 1 and is on a parallel with the inside wall of installation pole 42, and the opposite side cross-section of enclosing purlin 41 is the inclined plane form, and the inclined plane slope is the slope upwards form, and the inclined plane slope top is close to and encloses purlin 41 welded cofferdam 1, and the inclined plane slope bottom keep away from and enclose purlin 41 welded cofferdam 1.
Each mounting bar 42 is provided with two inclined blocks 43, the two inclined blocks 43 being spaced apart. The inclined block 43 is abutted against the enclosing purlin 41, the inclined plane of the inclined block 43 is matched with the inclined plane of the enclosing purlin 41, meanwhile, the inclined plane length of the inclined block 43 is larger than that of the enclosing purlin 41, and when the enclosing purlin 41 and the inclined block 43 relatively rotate, the enclosing purlin 41 and the inclined block 43 are not easy to separate from each other.
The intersection of the inclined plane of the inclined block 43 and the inclined plane top of the enclosing purlin 41 is provided with a caulking groove 431, a pressure sensor 47 is embedded in the caulking groove 431, and the pressure sensor 47 can output the pressure value of the rotary extrusion of the inclined block 43 and the inclined plane top of the enclosing purlin 41. The pressure sensor 47 is electrically connected with an alarm control member 48, a mounting groove 432 is formed in the top of the inclined block 43, the alarm control member 48 is mounted in the mounting groove 432, and the mounting groove 432 is communicated with the caulking groove 431 for wiring of the pressure sensor 47 and the alarm control member 48. The alarm control member 48 includes a controller and an audible alarm, the pressure sensor 47, the controller and the audible alarm are electrically connected in sequence, and when the inclined block 43 is pressed against the enclosing purlin 41 by relative rotation, the pressure sensor 47 continuously outputs a pressure value, and when the pressure value reaches a preset value of the controller, the audible alarm starts to alarm to warn that the enclosing purlin 41 is in an unstable state.
The inner bottom wall of the sleeve 45 is fixedly connected with a torsion spring 46, one end of the torsion spring 46, which is far away from the inner bottom wall of the sleeve 45, is sleeved and fixed on the peripheral wall of the mounting rod 42, when the enclosing purlin 41 and the mounting rod 42 rotate relatively, the torsion spring 46 can promote the mounting rod 42 to reset, and meanwhile, the axial stress of the mounting rod 42 can be effectively buffered, for example, when the action of water flow on the cofferdam 1 is axially transferred to the sleeve 45 and the mounting rod 42.
The rope pulling assembly 6 comprises a carbon steel wire rope 61, an anchor rod 62 and a cross rod 63, wherein the installation rod 42 is also fixedly connected with two traction wheels 44 at intervals, and two groups of the carbon steel wire rope 61 and the anchor rod 62 are respectively corresponding to the traction wheels 44. One end of the carbon steel wire rope 61 can be fixed on the concrete ring seat 5 positioned in the cofferdam 1 by using a hanging ring, the other end of the carbon steel wire rope 61 is firstly fixed on the traction wheel 44 positioned on the lower mounting rod 42 and is wound for a plurality of circles, then is fixed on the traction wheel 44 positioned on the higher position and is wound for a plurality of circles, and then is penetrated through the anchor rod 62 and is locked, and the carbon steel wire rope 61 in the state is in a tightening state. The anchor rod 62 is kept away from carbon steel wire rope 61's one end and inserts to locate on the outside concrete ring seat 5 of cofferdam 1, supports tightly between cofferdam 1 outer wall and anchor rod 62 simultaneously has horizontal pole 63, and horizontal pole 63 is the wood purlin, carries out flexible conduction between the two when improving the connectivity between cofferdam 1 and the firm mechanism, helps firm mechanism to carry out adaptability dimension steady to cofferdam 1.
The embodiment of the application also discloses a construction method of the reinforcing structure of the cofferdam, which comprises the following steps:
s1, installing a base mechanism;
s1-1, positioning a cofferdam 1, sinking two concrete ring seats 5 to a designated position of a river bed, and closing to form an annular belt 2;
s1-2, using underwater vibroflotation equipment to vibroflotate and level the surface layer of the river bed in the annular belt 2, and balancing the soil quality of the surface layer of the river bed, wherein a silt floating paddle escapes out of the annular belt 2;
s1-3, the cofferdam 1 is arranged in the soil of the riverbed at the annular belt 2 from top to bottom, and the cofferdams 1 are meshed with each other from head to tail to form the cofferdam 1;
it should be noted that the concrete ring seat 5 may be formed by enclosing concrete blocks, mainly considering convenience of construction.
S2, pouring underwater concrete 3, inputting the pressure of the underwater concrete 3 by using a guide pipe, wherein the underwater concrete 3 is tightly filled among the surface layer of a river bed, the annular belt 2 and the cofferdam 1 due to the pressure, and is uniformly solidified with the soil mentioned in the S2-1, so that the connectivity between the underwater concrete 3 and the river bed is improved, and the soil strength of the surface layer of the river bed is improved to a certain extent;
s3, pumping water in the cofferdam 1 in a layered manner, and installing the abutting component 4 in a layered manner;
s3-1, welding the enclosing purlin 41 on the inner side wall of the cofferdam 1;
s3-2, welding a torsion spring 46 on the inner bottom wall of the sleeve 45;
s3-3, welding a first sleeve 45 on the inner side wall of the cofferdam 1, inserting the mounting rod 42 into the sleeve 45, sleeving the torsion spring 46 outside the mounting rod 42, and simultaneously welding the torsion spring 46 on the peripheral wall of the mounting rod 42;
s3-4, based on the axial direction of the mounting rod 42, a second sleeve 45 is welded, and the welding step of the torsion spring 46 in the step S3-3 can be repeated due to the interaction between the mounting rod 42 and the torsion spring 46, and simultaneously the inclined block 43 on the mounting rod 42 is ensured to be abutted against the inclined surface of the enclosing purlin 41;
s3-5, repeating the steps from S3-1 to S3-4 to install the rest of the abutting component 4;
s4, after the water pumping in the cofferdam 1 is finished, installing a rope pulling assembly 6;
s4-1, in the step S1-1, a hole is formed in the concrete ring seat 5 in advance, after the concrete ring seat 5 is placed, the anchor rods 62 are penetrated into the holes formed in the concrete ring seat 5, and the anchor rods 62 are erected into the soil of the river bed;
s4-2, a cross rod 63 is tightly propped and arranged between the anchor rod 62 and the outer wall of the cofferdam 1;
s4-3, fixing one end of a carbon steel wire rope 61 on a concrete ring seat 5 positioned in the cofferdam 1, fixing the other end of the carbon steel wire rope 61 on a traction wheel 44 at a lower position and winding a plurality of circles, then dragging the carbon steel wire rope 61 to the traction wheel at a higher position and winding a plurality of circles, and then dragging and penetrating an anchor rod 62;
s4-4, reasonably tensioning and pre-tightening the traction rope at the anchor rod 62 by using a jack or other tensioning equipment;
s4-5, the inclined block 43 has a rotating trend and continuously acts on the top of the inclined plane of the enclosing purlin 41, so that the output value of the pressure sensor 47 is increased, an alarm is started when the output value reaches a first preset value of the controller, and tensioning is stopped;
s4-6, repeating the steps from S4-1 to S4-5 to install the rest rope pulling assembly 6;
it is noted that, because of the stress difference between the inside and the outside of the cofferdam 1, the upper part of the cofferdam 1 always has a tendency of bending inwards under the action of the water body, when the upper part of the cofferdam 1 bends inwards, the pressure sensor 47 is rotated and extruded through the top of the inclined plane of the enclosing purlin 41, the output value of the pressure sensor 47 is caused to reach the second preset value of the controller, and the acoustic alarm is triggered, and the steps S4-4 are repeated;
s5, recycling the cofferdam 1 after the use is finished;
s5-1, using underwater vibroflotation equipment, and vibroflotation to crush underwater concrete 3;
s5-2, recovering the abutting component 4 and part of the rope pulling component 6;
s5-3, pulling out the cofferdam 1 and the anchor rods 62;
s5-4, recovering the concrete ring seat 5.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (3)
1. Reinforcing structure of cofferdam, its characterized in that:
the underwater cofferdam comprises a base mechanism sinking to a riverbed, wherein an annular belt (2) for the cofferdam (1) to penetrate is formed between the base mechanism and the riverbed, underwater concrete (3) is poured in the annular belt (2), and the cofferdam (1) penetrates through the underwater concrete (3);
the fixing device comprises a cofferdam (1), and is characterized by further comprising a fixing mechanism, wherein the fixing mechanism comprises a supporting component (4), the supporting component (4) comprises an enclosing purlin (41), a mounting rod (42) and an inclined block (43) arranged on the mounting rod (42), the enclosing purlin (41) and the mounting rod (42) are oppositely arranged on the inner side wall of the cofferdam (1) at intervals, and the inclined surface of the enclosing purlin (41) is supported against the inclined surface of the inclined block (43);
the base mechanism comprises two concrete ring seats (5) which are arranged at intervals from inside to outside, and the annular belt (2) is positioned between the two concrete ring seats (5);
the stabilizing mechanism further comprises a rope pulling assembly (6), one end of the rope pulling assembly (6) is connected with a concrete ring seat (5) on the inner side of the cofferdam (1), and the other end of the rope pulling assembly (6) drives an inclined block (43) to abut against the purlin (41) and then is fixedly arranged on the outer portion of the cofferdam (1);
the rope pulling assembly (6) comprises a carbon steel wire rope (61) and an anchor rod (62), the anchor rod (62) is positioned on the concrete ring seat (5) at the outer side of the cofferdam (1), one end of the carbon steel wire rope (61) is arranged on the concrete ring seat (5) at the inner side of the cofferdam (1), and the other end of the carbon steel wire rope (61) is connected with the anchor rod (62);
the installation rod (42) is rotationally connected with the inner side of the cofferdam (1), the traction wheel (44) is fixedly arranged on the installation rod (42), the carbon steel wire rope (61) is in a straightened state, and the carbon steel wire rope (61) is fixed and wound on the traction wheel (44);
the installation rod (42) is rotatably provided with a sleeve (45), the sleeve (45) is fixed on the inner side wall of the cofferdam (1), the end part of the installation rod (42) is provided with a torsion spring (46), and one end of the torsion spring (46) far away from the installation rod (42) is abutted against the cofferdam (1);
a cross rod (63) is welded between the anchor rod (62) and the cofferdam (1).
2. The cofferdam reinforcing structure of claim 1, wherein:
the inclined block (43) is provided with a caulking groove (431) towards one side of the enclosing purlin (41), a pressure sensor (47) is arranged in the caulking groove (431), the pressure sensor (47) is electrically connected with an alarm control piece (48), and the top end of the inclined surface of the enclosing purlin (41) is abutted against the pressure sensor (47).
3. A method of constructing a reinforcing structure for a cofferdam as claimed in claim 1 or 2, wherein: the method comprises the following steps:
s1, positioning a cofferdam (1), vibrating and punching the surface layer of a river bed, and leveling the river bed;
s2, installing a base mechanism, sinking the base mechanism to a riverbed, and punching a cofferdam (1) into the bottom of an annular belt (2);
s3, pouring underwater concrete (3), and pouring the underwater concrete (3) between the annular belt (2) and the cofferdam (1);
s4, after the cofferdam (1) is used, crushing the underwater concrete (3), and pulling out the cofferdam (1) for recycling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210198424.8A CN114482100B (en) | 2022-03-01 | 2022-03-01 | Reinforcing structure of cofferdam and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210198424.8A CN114482100B (en) | 2022-03-01 | 2022-03-01 | Reinforcing structure of cofferdam and construction method |
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| Publication Number | Publication Date |
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| CN114482100A CN114482100A (en) | 2022-05-13 |
| CN114482100B true CN114482100B (en) | 2024-03-19 |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204491639U (en) * | 2015-02-11 | 2015-07-22 | 中铁二十五局集团第一工程有限公司 | A kind of marine cofferdam preventing infiltration, prevent erosion |
| CN106193075A (en) * | 2016-08-24 | 2016-12-07 | 中国铁建大桥工程局集团有限公司 | A kind of concrete cofferdam and steel sheet-pile cofferdam combination type cofferdam structure and construction method |
| CN208586554U (en) * | 2018-06-01 | 2019-03-08 | 海安绒克纺织有限公司 | A kind of hydraulic engineering water-stop sheet |
| CN211571756U (en) * | 2019-12-25 | 2020-09-25 | 叶建公 | Additional strengthening for water conservancy construction cofferdam |
| CN211690364U (en) * | 2019-12-30 | 2020-10-16 | 青岛华德仪表工程有限公司 | Steel sheet pile strutting arrangement |
| CN213417832U (en) * | 2020-07-07 | 2021-06-11 | 中国电建集团铁路建设有限公司 | Enclosing purlin mounting structure |
| CN214328933U (en) * | 2021-01-13 | 2021-10-01 | 安徽金川建设工程有限公司 | Detachable water conservancy construction cofferdam |
| CN113585302A (en) * | 2021-07-22 | 2021-11-02 | 中交第二航务工程局有限公司 | Construction method of bottom-sealing-free concrete double-wall steel cofferdam for deep water bare rock geology |
| CN214784073U (en) * | 2021-05-17 | 2021-11-19 | 浙江久豪建筑勘测设计有限公司 | Cofferdam retaining and protecting structure for coastal soft soil hydraulic reclamation land reclamation |
-
2022
- 2022-03-01 CN CN202210198424.8A patent/CN114482100B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204491639U (en) * | 2015-02-11 | 2015-07-22 | 中铁二十五局集团第一工程有限公司 | A kind of marine cofferdam preventing infiltration, prevent erosion |
| CN106193075A (en) * | 2016-08-24 | 2016-12-07 | 中国铁建大桥工程局集团有限公司 | A kind of concrete cofferdam and steel sheet-pile cofferdam combination type cofferdam structure and construction method |
| CN208586554U (en) * | 2018-06-01 | 2019-03-08 | 海安绒克纺织有限公司 | A kind of hydraulic engineering water-stop sheet |
| CN211571756U (en) * | 2019-12-25 | 2020-09-25 | 叶建公 | Additional strengthening for water conservancy construction cofferdam |
| CN211690364U (en) * | 2019-12-30 | 2020-10-16 | 青岛华德仪表工程有限公司 | Steel sheet pile strutting arrangement |
| CN213417832U (en) * | 2020-07-07 | 2021-06-11 | 中国电建集团铁路建设有限公司 | Enclosing purlin mounting structure |
| CN214328933U (en) * | 2021-01-13 | 2021-10-01 | 安徽金川建设工程有限公司 | Detachable water conservancy construction cofferdam |
| CN214784073U (en) * | 2021-05-17 | 2021-11-19 | 浙江久豪建筑勘测设计有限公司 | Cofferdam retaining and protecting structure for coastal soft soil hydraulic reclamation land reclamation |
| CN113585302A (en) * | 2021-07-22 | 2021-11-02 | 中交第二航务工程局有限公司 | Construction method of bottom-sealing-free concrete double-wall steel cofferdam for deep water bare rock geology |
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| CN114482100A (en) | 2022-05-13 |
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