CN209837061U - Device for quickly pressing underwater steel cofferdam of reinforced bridge - Google Patents
Device for quickly pressing underwater steel cofferdam of reinforced bridge Download PDFInfo
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- CN209837061U CN209837061U CN201920489233.0U CN201920489233U CN209837061U CN 209837061 U CN209837061 U CN 209837061U CN 201920489233 U CN201920489233 U CN 201920489233U CN 209837061 U CN209837061 U CN 209837061U
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Abstract
The utility model provides a consolidate device that bridge underwater steel cofferdam swiftly pushed down, by the anti-skidding packing ring, the staple bolt, the reaction frame, the reaction-force chain block, hoist and mount chain block, the bottom end rail, the support steel pipe, jack and steel cofferdam are constituteed, the hoop sets up the staple bolt all around of stand, anti-skidding packing ring more than the one deck is located between staple bolt and the stand, a plurality of round pin pegs have been planted around the stand of staple bolt below, hoop winding hoop all around of stand next to round pin peg lower limb, reaction frame and hoop are connected to the chain block, the reaction frame hangs and sets up the hoist and mount chain block, hoist and mount steel cofferdam is hung to the chain block lower part, bottom end rail and bottom end rail are arranged in the top surface cross of steel cofferdam, support steel pipe and jack are tightly between reaction frame and the bottom end rail. The utility model discloses collect self-reaction system and lifting device in an organic whole, need not large-scale lifting device, the installation is simple with the dismantlement, and is little to the space requirement, and simple easy control has solved and has had the tie beam and be difficult to the difficult problem of operation between pier, the pile foundation, and the efficiency of construction is high.
Description
Technical Field
The utility model belongs to the civil engineering field, concretely relates to steel cofferdam pushes down the technique, especially a consolidate bridge and swiftly push down device of steel cofferdam under water.
Background
Bridge underwater structures such as bridge piers, pile foundations and the like are structures for supporting bridge span structures and transferring constant load and vehicle live load to foundations, and due to the long-term load and the comprehensive influence of various complex environments, the bridge piers often have the defects of concrete breakage, exposed ribs and the like, so that the bridge underwater structures are necessary to be timely reinforced for ensuring the overall safety of the bridge.
However, most of the piers in China are underwater, the factors of the harsh underwater environment and uncertainty are more, and in the conventional pier underwater reinforcing method, the steel cofferdam is used as a temporary facility for bridge underwater construction and sinks in place before reinforcing, but the steel cofferdam construction for bridge reinforcing is limited by the influence of the built bridge, the operable space is limited, and tie beams often exist between the piers, so that the traditional cofferdam for pier underwater reinforcing is difficult to implement under the condition. For example, chinese patent CN102936899A discloses a method for installing a steel cofferdam by means of a pier supporting frame, which comprises a hoisting frame and a guiding frame both installed on a pier, wherein during construction, the hoisting frame for hoisting the steel cofferdam is installed and positioned on the top or side of the pier first, then the guiding frame for guiding and positioning the steel cofferdam underwater is installed and positioned on the side of the pier, and finally the steel cofferdam unit is hoisted horizontally and then vertically adjusted first, and the hoisting frame and the guiding frame are hoisted and assembled in sections and units to form the steel cofferdam with self-balancing capability. The method has the advantages that a plurality of guide frame members are adopted, the steel cofferdam is pressed down in stages, the process is complex, and the method only comprises steel cofferdam hoisting equipment and is not provided with a pressing device, so that the construction efficiency is greatly reduced.
The utility model provides a consolidate device that bridge steel cofferdam under water swiftly pushed down collects self-reaction system and lifting device in an organic whole, and the installation is simple with the dismantlement, has solved and has had the tie beam and be difficult to the difficult problem of operation between the pier, has improved the efficiency of construction greatly.
Disclosure of Invention
The utility model aims at providing a consolidate device that bridge steel cofferdam under water swiftly pushed down, the utility model discloses an innovation point lies in adopting swift assembly methods, with the staple bolt, reaction frame, the self-reaction system is constituteed to reaction chain hoist and stand, the hoop sets up the staple bolt around the stand, hoop winding hoop around the stand of staple bolt below, reaction frame and hoop are connected to the reaction chain hoist, support steel pipe and jack top tightly in between reaction frame and the lower longeron, it realizes the installation that the steel cofferdam pushes down to exert the counter-force through reaction frame, the construction is swiftly convenient, can push down the steel cofferdam of different diameters through the position of adjusting hoist and mount chain hoist and jack, easy operation is easily controlled.
The technical scheme of the utility model is that: a device for quickly pressing down an underwater steel cofferdam for reinforcing a bridge comprises anti-skid washers, anchor ears, a reaction frame, a reaction chain block, a hoisting chain block, a lower cross beam, a lower longitudinal beam, a supporting steel pipe, a jack and a steel cofferdam, wherein the anchor ears are annularly arranged around a stand column, more than one layer of anti-skid washers are positioned between the anchor ears and the stand column, the reaction frame comprises an upper cross beam and an upper longitudinal beam, it is fixed in the upper portion of staple bolt through the stabilizer bar respectively, and through the buckle with the entablature, it is whole that entablature and staple bolt three connect into, the stand of staple bolt below is planted all around has a plurality of round pin pegs, the hoop is twined to the hoop all around of the stand of adjacent round pin peg lower limb, reaction frame and hoop are connected to the reaction-force back-off chain, the reaction frame hangs and sets up the hoist and mount back-off chain, hoist and mount steel cofferdam is hung to the hoist and mount back-off chain lower part, bottom end rail and bottom end rail are arranged in the top surface cross in steel cofferdam, support steel pipe and jack top are tightly between reaction frame.
The staple bolt constitute by two semicircle shaped steel boards and two upright shaped steel, two upright shaped steel install respectively on the top surface of two semicircle shaped steel boards and be parallel state, its length more than or equal to semicircle shaped steel board's diameter, two semicircle shaped steel boards pass through the bolt fastening in the lateral wall of stand, through the taut lateral wall that fastens in the stand of stabilizer bar between two upright shaped steel.
The upper cross beam, the upper longitudinal beam, the lower cross beam and the lower longitudinal beam are all made of section steel or a combination of the section steel, the length of the section steel is larger than or equal to that of the erection section steel, the upper cross beam and the upper longitudinal beam are respectively arranged in a crossed mode, the lower cross beam and the lower longitudinal beam are respectively arranged at the bottoms of the upper longitudinal beam and the lower longitudinal beam.
Two liang do not are fixed in the outside of stand through stabilizer bar symmetry stretch-draw, the stand forms well style of calligraphy with native longeron and arranges that the tip top surface interval arrangement of entablature and last longeron has a plurality of billets, the notch between billet and the billet is used for adjusting fixed reaction chain block and the position that hoist and mount chain block hung.
The buckle comprises a U-shaped bolt, a matched gasket and a nut, is respectively arranged at the cross position of the upper cross beam and the upper longitudinal beam, and tightly hoops the erect section steel, the upper cross beam and the upper longitudinal beam of the hoop from bottom to top.
The anti-slip gasket is made of one of rubber, silica gel, a diamond sand strip, rubber and plastic fibers and geotextile, and the hoop is made of steel strands, steel wire ropes and steel bars.
The pin stud and the hoop are positioned 1.5-2.0 m below the hoop.
The jack is positioned at the lower part of the support steel pipe.
The utility model provides a consolidate device that bridge steel cofferdam under water swiftly pushed down, it is swiftly convenient to be under construction, through the staple bolt, the reaction frame, the fixed inverted triangle's of reaction-force chain block and stand self-reaction system, hang the hoist and mount chain block on the reaction frame, collect lifting device in an organic whole, need not large-scale lifting device, the installation is simple with the dismantlement, through adjusting arranging of hoist and mount chain block and jack, can hoist and mount the steel cofferdam of pushing down different diameters, it is little to the space requirement, the pier has been solved, there is the tie beam and be difficult to the difficult problem of operation between the pile foundation, the hoist and mount chain block not only can transfer the regulation steel cofferdam, the later stage still transfers the material, the usage of template, the efficiency of construction is greatly.
The utility model discloses the advantage is showing, has following apparent advantage:
(1) the steel cofferdam reinforcing device is quick and convenient to install and disassemble, is suitable for pressing down the steel cofferdams reinforced by underwater structures of bridges such as underwater piers and pile foundations of different types, has small requirement on space, is simple to operate, and solves the problem that the operation is difficult due to the fact that tie beams exist between the piers and the pile foundations.
(2) Need not to set up large-scale complicated static pressure counter-force equipment and hoisting equipment, staple bolt, reaction frame and stand closely fix to form the inverted triangle system through reaction chain block and stand, strengthen the structural stability of whole counter-force system.
(3) Collect self-reaction system, push down equipment and lifting device in an organic whole, the construction is swift convenient, and the notch of entablature and last longeron tip can be adjusted the position of fixed counter-force chain block and hoist and mount chain block, can hoist and mount the steel cofferdam of different diameter specifications, and the hoist and mount chain block not only can transfer and adjust the steel cofferdam, still can be used to transfer material and template, has improved the efficiency of construction greatly.
Description of the drawings:
FIG. 1 is a process flow diagram of a device for quickly pressing down an underwater steel cofferdam for reinforcing a bridge;
FIG. 2 is a schematic structural perspective view of a device for quickly pressing down an underwater steel cofferdam for reinforcing a bridge;
FIG. 3 is a perspective view of the non-slip gasket arrangement;
FIG. 4 is a schematic view of the process of installing the hoop;
FIG. 5 is a schematic view of a process for installing the reaction frame;
FIG. 6 is a schematic diagram of the process of fixing the reverse force chain down;
FIG. 7 is a schematic process diagram of hoisting a chain block and lowering a steel cofferdam;
FIG. 8 is a schematic view of a process for laying out cross stringers;
FIG. 9 is a schematic view of the process of installing the jack;
in all the drawings, 1 is a column; 2 is an anti-slip gasket; 3 is a hoop; 31 is a semi-arc steel plate; 32 is a vertical section steel; 4 is a counterforce frame; 41 is an upper beam; 42 is an upper longitudinal beam; 43 is a stabilizer bar; 44 is a buckle; 5 is counter-force chain inversion; 51 is a pin bolt nail; 52 is a hoop; 6, hoisting chain blocks; 7 is a steel cofferdam; 71 is a lower beam; 72 is a lower longitudinal beam; 8 is a jack; and 81 is a supporting steel pipe.
The specific implementation mode is as follows:
in order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings. The utility model provides a device for quickly pressing down an underwater steel cofferdam for reinforcing a bridge, which comprises an anti-slip washer 2, a hoop 3, a reaction frame 4, a reaction chain 5, a hoisting chain 6, a lower beam 71, a lower longitudinal beam 72, a supporting steel pipe 81, a jack 8 and a steel cofferdam 7, wherein the hoop 3 is annularly arranged around a stand 1, more than one layer of anti-slip washers 2 is positioned between the hoop 3 and the stand 1, the reaction frame 4 comprises an upper beam 41 and an upper longitudinal beam 42 which are respectively fixed on the upper part of the hoop 3 through a stabilizing bar 43, the upper beam 41, the upper longitudinal beam 42 and the hoop 3 are connected into a whole through a buckle 44, a plurality of pin studs 51 are planted around the stand 1 below the hoop 3, the hoop 52 is annularly wound around the periphery of the stand 1 close to the lower edge of the pin studs 51, the reaction chain 5 is connected with the reaction frame 4 and the hoop 52, the reaction frame 4 is hung and provided with the hoisting chain 6, the steel cofferdam 7 is hung on the lower part of the hoisting chain 6, the lower cross beam 71 and the lower longitudinal beam 72 are arranged on the top surface of the steel cofferdam 7 in a crossed mode, and the supporting steel pipe 81 and the jack 8 are tightly propped between the reaction frame 4 and the lower longitudinal beam 72.
Staple bolt 3 constitute by two semicircle profiled bars 31 and two upright shaped steel 32, two upright shaped steel 32 install respectively and be parallel state on two semicircle profiled bars 31's top surface, its length more than or equal to semicircle profiled bar 31's diameter, two semicircle profiled bars 31 pass through the bolt fastening in the lateral wall of stand 1, tighten through stabilizer bar 43 between two upright shaped steel 32 and fasten in the lateral wall of stand 1.
The upper cross beam 41, the upper longitudinal beam 42, the lower cross beam 71 and the lower longitudinal beam 72 are all made of section steel or a combination thereof, the length of the section steel is greater than or equal to that of the erection section steel 32, the upper cross beam 41 and the upper longitudinal beam 42 are respectively arranged in a crossed manner, the lower cross beam 71 and the lower longitudinal beam 72 are respectively arranged at the bottoms of the upper longitudinal beam 42 and the lower longitudinal beam 72.
Every two of entablature 41, last longeron 42 stretch-draw through stabilizer bar 43 symmetry respectively and be fixed in the outside of stand 1, entablature 41 hugs closely stand 1 with last longeron 42 and forms the well style of calligraphy and arranges, the tip top surface interval arrangement of entablature 41 and last longeron 42 has a plurality of billets, the notch between billet and the billet is used for adjusting the position that fixed reaction chain block 5 and hoist chain block 6 hung.
The buckle 44 is composed of a U-shaped bolt, a matching gasket and a nut, and is respectively arranged at the crossing position of the upper cross beam 41 and the upper longitudinal beam 42, and tightly hoops the erection steel 32, the upper cross beam 41 and the upper longitudinal beam 42 of the hoop 3 from bottom to top.
The material of the anti-skid washer 2 is one of rubber, silica gel, a diamond sand strip, rubber and plastic fiber and geotextile, and the hoop 52 is made of steel strands, steel wire ropes and steel bars.
The pin bolt 51 and the hoop 52 are positioned 1.5 m-2.0 m below the hoop 3.
The jack 8 is positioned at the lower part of the support steel pipe 81.
In the implementation method, the utility model comprises the following steps:
1) cleaning the stand column: after dredging the riverbed, setting up a construction platform, cleaning the surface of the upright post 1 to be reinforced, removing impurities such as loose and sludge attached to the surface, and wiping the surface clean by using alcohol or acetone solution;
2) arranging an anti-slip gasket: according to the reinforcement design requirement, an appropriate position is selected on the surface of the upright post 1 to arrange the anti-skid gasket 2, and the height of the anti-skid gasket 2 is not less than that of the hoop 3;
3) installing a hoop: the anchor ear 3 with the corresponding size is manufactured according to the size of the upright post 1 in advance and is transported to the site, the anchor ear 3 is arranged on the surface of the anti-skid washer 2, and the anchor ear 3 is fastened through a high-strength bolt, clamps the anti-skid washer 2 and is firmly fixed with the upright post 1;
4) assembling a reaction frame: the reaction frame 4 consists of an upper cross beam 41 and an upper longitudinal beam 42, is manufactured in advance and then transported to the site, is respectively fixed on the upper top surface of the hoop 3 through the stabilizing bars 43 in sequence, and connects the upper cross beam 41, the upper longitudinal beam 42 and the hoop 3 into a whole through the buckles 44;
5) fixing a reverse force chain block: implanting a plurality of pin studs 51 around the upright post 1 at a position 1.5-2.0 m below the hoop 3, tightly hooping hoop 52 at the lower parts of the pin studs 51, respectively fixing the upper ends of the reverse-force inverted chains 5 at the end part of the upper cross beam 41, and connecting the lower ends of the reverse-force inverted chains with the hoop 52;
6) hoisting the inverted chain and lowering the steel cofferdam: arranging a hoisting chain block 6 at the end part of the upper longitudinal beam 42, connecting the lower part of the hoisting chain block 6 with a steel cofferdam 7, polishing the steel cofferdam 7 in advance to eliminate corner burrs, and lowering the steel cofferdam 7 to a specified position;
7) arranging transverse longitudinal beams: a lower cross beam 71 and a lower longitudinal beam 72 are vertically arranged at the upper end of the steel cofferdam 7 in a crossed manner, wherein the lower longitudinal beam 72 is positioned at the upper part of the lower cross beam 71;
8) installing a jack: the supporting steel pipe 81 and the jack 8 are symmetrically arranged between the reaction frame 4 and the lower longitudinal beam 72, the supporting steel pipe 81 is used as a reaction force conduction device, the jack 8 is positioned at the lower part of the supporting steel pipe 81, and a gasket is arranged at the contact part of the jack 8 and the supporting steel pipe 81 as well as the lower longitudinal beam 72 to increase the force transmission area;
9) and (3) symmetrically pressing down: and controlling the jacks 8 to symmetrically press down until the steel cofferdam 7 is pressed down to a specified depth.
In conclusion, the device for quickly pressing down the underwater steel cofferdam for reinforcing the bridge is formed.
Claims (8)
1. A device for rapidly pressing down an underwater steel cofferdam of a reinforced bridge is characterized by consisting of anti-slip gaskets (2), a hoop (3), a reaction frame (4), reaction chain blocks (5), hoisting chain blocks (6), a lower cross beam (71), a lower longitudinal beam (72), a supporting steel pipe (81), a jack (8) and a steel cofferdam (7), wherein the hoop (3) is arranged around a stand column (1) in a circumferential direction, more than one layer of anti-slip gaskets (2) are positioned between the hoop (3) and the stand column (1), the reaction frame (4) consists of an upper cross beam (41) and an upper longitudinal beam (42) which are respectively fixed on the upper part of the hoop (3) through stabilizing bars (43) and connect the upper cross beam (41), the upper longitudinal beam (42) and the hoop (3) into a whole through buckles (44), a plurality of pin studs (51) are planted around the stand column (1) below the hoop (3), and the hoop (52) close to the lower edge of the pin studs (51) is wound around the stand column (1) in a circumferential direction, reaction frame (4) and hoop (52) are connected in reaction frame (5), and reaction frame (4) hang and set up hoist and mount chain block (6), and hoist and mount steel cofferdam (7) are hung to hoist and mount chain block (6) lower part, and bottom end rail (71) and lower longeron (72) are arranged in the top surface cross of steel cofferdam (7), and support steel pipe (81) and jack (8) top are tight in between reaction frame (4) and lower longeron (72).
2. The device for rapidly pressing down the underwater steel cofferdam for reinforcing the bridge as claimed in claim 1, wherein the hoop (3) is composed of two semi-circular arc steel plates (31) and two erection steel plates (32), the two erection steel plates (32) are respectively installed on the top surfaces of the two semi-circular arc steel plates (31) in a parallel state, the length of the two erection steel plates is greater than or equal to the diameter of the semi-circular arc steel plates (31), the two semi-circular arc steel plates (31) are fastened on the outer side wall of the upright post (1) through bolts, and the two erection steel plates (32) are fastened on the outer side wall of the upright post (1) through a stabilizer bar (43).
3. The device for rapidly pressing down the underwater steel cofferdam for reinforcing the bridge as claimed in claim 1, wherein the upper cross beam (41), the upper longitudinal beam (42), the lower cross beam (71) and the lower longitudinal beam (72) are all made of section steel or a combination thereof, and the length of the section steel is greater than or equal to that of the erection section steel (32), the upper cross beam (41) and the upper longitudinal beam (42), the lower cross beam (71) and the lower longitudinal beam (72) are respectively arranged in a cross manner, and the upper cross beam (41) and the lower cross beam (71) are respectively positioned at the bottom of the upper longitudinal beam (42) and the lower longitudinal beam (72).
4. The device for rapidly pressing down the underwater steel cofferdam for reinforcing bridges as claimed in claim 1, wherein every two of the upper cross beam (41) and the upper longitudinal beam (42) are symmetrically tensioned and fixed on the outer side of the upright (1) through the stabilizing bars (43), the upper cross beam (41) and the upper longitudinal beam (42) are tightly attached to the upright (1) to form a # -shaped arrangement, a plurality of steel bars are arranged on the top surfaces of the ends of the upper cross beam (41) and the upper longitudinal beam (42) at intervals, and notches between the steel bars are used for adjusting the hanging positions of the fixed reaction chain block (5) and the hoisting chain block (6).
5. The device for rapidly pressing down the underwater steel cofferdam for reinforcing the bridge as claimed in claim 1, wherein the buckle (44) is composed of a U-shaped bolt, a matched gasket and a nut, and is respectively arranged at the crossing position of the upper cross beam (41) and the upper longitudinal beam (42) and tightly hooped on the erection steel (32), the upper cross beam (41) and the upper longitudinal beam (42) of the hoop (3) from bottom to top.
6. The device for rapidly pressing down the underwater steel cofferdam of the reinforced bridge as claimed in claim 1, wherein the material of the anti-slip washer (2) is one of rubber, silica gel, emery stick, rubber and plastic fiber and geotextile, and the hoop (52) is made of steel strand, steel wire rope and steel bar.
7. The device for rapidly pressing down the underwater steel cofferdam for reinforcing bridge as claimed in claim 1, wherein said cotter nails (51) and hoops (52) are positioned 1.5 m-2.0 m below the anchor ear (3).
8. The device for rapidly pressing down the underwater steel cofferdam for reinforcing bridge as claimed in claim 1, wherein said jack (8) is located at the lower part of the supporting steel pipe (81).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920489233.0U CN209837061U (en) | 2019-04-09 | 2019-04-09 | Device for quickly pressing underwater steel cofferdam of reinforced bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920489233.0U CN209837061U (en) | 2019-04-09 | 2019-04-09 | Device for quickly pressing underwater steel cofferdam of reinforced bridge |
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| Publication Number | Publication Date |
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| CN209837061U true CN209837061U (en) | 2019-12-24 |
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| CN201920489233.0U Active CN209837061U (en) | 2019-04-09 | 2019-04-09 | Device for quickly pressing underwater steel cofferdam of reinforced bridge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112227188A (en) * | 2020-10-07 | 2021-01-15 | 代潇男 | Bridge leg depth limiter suitable for emergency rescue and disaster relief at breach of dam in yellow river water conservancy |
-
2019
- 2019-04-09 CN CN201920489233.0U patent/CN209837061U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112227188A (en) * | 2020-10-07 | 2021-01-15 | 代潇男 | Bridge leg depth limiter suitable for emergency rescue and disaster relief at breach of dam in yellow river water conservancy |
| CN112227188B (en) * | 2020-10-07 | 2022-03-11 | 代潇男 | Bridge leg depth limiter suitable for emergency rescue and disaster relief at breach of dam in yellow river water conservancy |
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