CN217601478U - Steel cofferdam with locate function - Google Patents
Steel cofferdam with locate function Download PDFInfo
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- CN217601478U CN217601478U CN202123419783.1U CN202123419783U CN217601478U CN 217601478 U CN217601478 U CN 217601478U CN 202123419783 U CN202123419783 U CN 202123419783U CN 217601478 U CN217601478 U CN 217601478U
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Abstract
The utility model discloses a steel cofferdam with locate function belongs to bridge construction technical field. The steel cofferdam positioning system comprises a vertical positioning device and a horizontal positioning device, the vertical positioning device comprises positioning pieces and adjusting pieces, the positioning pieces are arranged on the outer side of the steel cofferdam at intervals, and the positioning pieces can slide up and down along the outer side wall plate of the steel cofferdam; the adjusting piece is arranged between the positioning piece and the steel cofferdam, and can lift the steel cofferdam in the vertical direction by taking the positioning piece as a supporting point. The horizontal positioning device comprises a power part and a traction part, and the traction part is used for adjusting the horizontal position of the steel cofferdam under the driving of the power part. The utility model realizes the rapid and accurate positioning of the steel cofferdam, shortens the construction period and shortens the construction time; the number of underwater operators is reduced, and the construction risk is reduced; simple structure, construction cost is low, is fit for popularizing and applying.
Description
Technical Field
The utility model relates to a bridge construction technical field, concretely relates to steel cofferdam positioning system.
Background
With the continuous development of bridge foundation construction technology, bridge engineering is increasingly developed towards the direction of deep hydration and large span, and the structural form of the steel cofferdam under the complex environment is continuously developed. The cable-stayed bridge is used as a bridge structure with attractive appearance and large spanning capacity, all loads of the cable-stayed bridge are borne by the tower columns, the loads are transmitted to the bearing platform through the tower columns, the loads are transmitted to the pile foundation through the bearing platform, and then the loads are transmitted to the foundation through the pile foundation. At present, most of super-large span cable-stayed bridges at home and abroad are used for spanning rivers and lakes, bridge foundations are mostly positioned in water, cofferdams need to be constructed before the foundations are constructed, and the construction of the steel cofferdams is also the key point of bridge construction.
The current common underwater steel cofferdam sinking positioning construction method mainly comprises the following two methods: the first method is a water injection soil cutting sinking positioning method, which is suitable for the situation that the river bed covering layer is a sandy soil layer and is not suitable for the situation that the river bed is a medium-stroke geological rock stratum, and has larger application limitation; the second method is a method for positioning the supporting pad of the cutting edge after water injection sinking in place, which comprises the steps of carrying out underwater blasting on a foundation pit in the river bed range, then removing slag, enabling the elevation of the pit bottom of the foundation pit to be lower than the design bottom elevation of a cofferdam, carrying out water injection sinking after the cofferdam is in place, sending a diver to carry out supporting pad of the underwater cutting edge after the cofferdam sinks to the design elevation, and plugging the cutting edge.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a steel cofferdam positioning system solves the current steel cofferdam location construction risk height, the degree of difficulty is big, the period is long, the expense is high and the relatively poor technical problem of precision.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a steel cofferdam positioning system comprises a vertical positioning device and a horizontal positioning device;
the vertical positioning device comprises positioning pieces and adjusting pieces, the positioning pieces are arranged on the outer side of the steel cofferdam at intervals, and the positioning pieces can slide up and down along the outer side wall plate of the steel cofferdam; the adjusting part set up in the setting element with between the steel cofferdam, the adjusting part can use the setting element is the fulcrum point to the steel cofferdam goes up and down of direction from top to bottom, wherein, works as when the steel cofferdam is located appointed elevation, the setting element with steel cofferdam fixed connection.
The horizontal positioning device comprises a power part and a traction part, the traction part is used for adjusting the horizontal position of the steel cofferdam under the driving of the power part, the horizontal positioning device comprises a first traction side and a second traction side, the first traction side is positioned on one side of the steel cofferdam, and the second traction side is opposite to the first traction side.
Furthermore, the steel cofferdam positioning system also comprises a connecting piece, wherein the connecting piece is arranged on the outer side wall plate of the steel cofferdam, and the connecting piece is used for connecting the positioning piece with the steel cofferdam.
Furthermore, the connecting piece comprises a hoop, the hoops are fixed on the outer side wall plates of the steel cofferdam, the positioning piece penetrates through the hoop, and the hoop is used for limiting the positioning piece in the horizontal direction.
Further, the connecting piece still includes the mounting bracket, the mounting bracket is fixed in the outer side wall board of steel cofferdam is close to upper end opening part, the setting element passes the mounting bracket.
Further, the positioning piece is a steel leg, and the height of the steel leg is not less than the height of the steel cofferdam.
Furthermore, the steel cofferdam positioning system further comprises a supporting piece, the supporting piece is fixed on the positioning piece, and the adjusting piece is arranged on the supporting piece.
Further, the support is a bracket.
Further, the adjusting piece is a jack.
Furthermore, steel cofferdam positioning system still includes the mounting, and when the steel cofferdam was located appointed elevation, the setting element with the steel cofferdam passes through mounting fixed connection.
Further, the fixing piece is a stiffening plate, and the stiffening plate is welded with the steel cofferdam and the positioning piece.
Furthermore, an anchor pier, a plurality of power parts and a plurality of traction parts are arranged on the first traction side, the power parts are arranged on the anchor pier, and the traction parts are connected with the power parts and the steel cofferdam;
and the plurality of traction pieces are arranged in a crossed manner and are used for adjusting the horizontal position of the steel cofferdam.
Furthermore, a trestle, a plurality of power parts and a plurality of traction parts are arranged on the second traction side, the power parts are arranged on the trestle, and the traction parts are connected with the power parts and the steel cofferdam;
the steel cofferdam comprises a steel cofferdam body, a plurality of traction pieces, a plurality of water flow guiding devices and a plurality of water flow guiding devices, wherein the plurality of traction pieces can pull the steel cofferdam body along the direction opposite to the water flow to resist the water flow force, and the plurality of traction pieces are arranged in a crossed mode to adjust the horizontal position of the steel cofferdam body.
Further, the power part is a motor, and the traction part is a steel wire rope.
The beneficial effects of the utility model reside in that:
the utility model realizes the rapid and accurate positioning of the steel cofferdam by arranging the vertical positioning device and the horizontal positioning device, shortens the construction period and shortens the construction time; the number of underwater operators is reduced, and the construction risk is reduced; simple structure, low construction cost and suitability for popularization and application.
Drawings
Fig. 1 is a schematic plan view of a positioning system of a steel cofferdam according to a preferred embodiment of the present invention.
Fig. 2 is a schematic view of the vertical positioning device according to a preferred embodiment of the present invention.
Fig. 3 is a schematic plan view of a vertical positioning device according to a preferred embodiment of the present invention.
Fig. 4 is a schematic view illustrating the connection between the top of the steel cofferdam and the positioning member according to a preferred embodiment of the present invention.
Fig. 5 is a schematic view illustrating the connection between the bottom of the steel cofferdam and the bottom of the positioning member according to a preferred embodiment of the present invention.
Fig. 6 is a schematic view of the vertical arrangement of the horizontal positioning device according to a preferred embodiment of the present invention.
In the figure:
1-steel cofferdam; 2-a positioning element; 3, foundation pit; 4-a rock formation; 5-crushing stones; 6-trestle support; 7-construction water level; 8-a mounting frame; 9-a support; 10-an adjustment member; 11-a fixing member; 12-anchor ear; 13-a power member; 14-a traction member; 15-first traction side; 16-a second traction side; 17-anchor pier.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 to 6, the embodiment provides a steel cofferdam positioning system, which includes a vertical positioning device and a horizontal positioning device, wherein the vertical positioning device includes positioning members 2 and adjusting members 10, the positioning members 2 are arranged at intervals outside the steel cofferdam 1, and the positioning members 2 can slide up and down along the outer side wall plate of the steel cofferdam 1; the adjusting piece 10 is arranged between the positioning piece 2 and the steel cofferdam 1, and the adjusting piece 10 can lift the steel cofferdam 1 up and down by taking the positioning piece 2 as a supporting point; when the steel cofferdam 1 is positioned at a specified elevation, the positioning piece 2 is fixedly connected with the steel cofferdam 1; the horizontal positioning device comprises a power member 13 and a traction member 14, wherein the traction member 14 is used for adjusting the horizontal position of the steel cofferdam under the driving of the power member 13, the horizontal positioning device comprises a first traction side 15 and a second traction side 16, the first traction side 15 is positioned on one side of the steel cofferdam, and the second traction side 16 is opposite to the first traction side 15.
By arranging the vertical positioning device and the horizontal positioning device, the steel cofferdam 1 is quickly and accurately positioned, the construction period is shortened, and the construction time is short; the number of underwater operators is reduced, and the construction risk is reduced; simple structure, construction cost is low, is fit for popularizing and applying.
In this embodiment, the steel cofferdam positioning system further includes a connecting member, the connecting member is disposed on the outer side wall plate of the steel cofferdam 1, and the connecting member is used for connecting the positioning member 2 and the steel cofferdam 1. The steel cofferdam 1 is connected with the connecting piece in a sliding manner, and the positioning piece 2 can slide along the steel cofferdam 1 in the up-and-down direction through the connecting piece so as to be positioned subsequently.
In this embodiment, the connector includes an anchor ear 12, and a plurality of anchor ears 12 are fixed in the outer side wall plate of the steel cofferdam 1, and the positioning piece 2 passes through the anchor ear 12, and the anchor ear 12 is used for carrying out the spacing of horizontal direction to the positioning piece 2. The anchor ear 12 can prevent the positioning element 2 from deviating in the horizontal direction, and ensure that the positioning adjustment of the positioning element 2 is in the vertical direction.
In this embodiment, the connecting member further includes a mounting bracket 8, the mounting bracket 8 is fixed to an opening near the upper end of the outer side wall plate of the steel cofferdam 1, and the positioning member 2 penetrates through the mounting bracket 8. The mounting frame 8 is arranged outside the opening at the upper part of the steel cofferdam 1, so that the mounting is convenient and the positioning piece 2 is fixed subsequently.
In this embodiment, the positioning member 2 is a steel leg, and the height of the steel leg is not less than the height of the steel cofferdam 1. The steel landing leg is convenient to manufacture, easy to process and high in strength, and can meet the requirement for suspension positioning of the steel cofferdam 1.
In this embodiment, the steel cofferdam positioning system further includes a supporting member 9, the supporting member 9 is fixed on the positioning member 2, and the adjusting member 10 is disposed on the supporting member 9. The supporting member 9 is fixedly connected with the positioning member 2, the supporting member 9 provides a supporting point for the adjusting member 10, and the adjusting member 10 can adjust the steel cofferdam 1 in the water in a lifting manner, so that the steel cofferdam 1 is positioned on the horizontal plane.
In this embodiment, the support member 9 is a bracket. The bracket is convenient to process and stable in stress.
In this embodiment, the adjusting member 10 is a jack. The range of the jack is selected according to the stress requirement of the suspended steel cofferdam 1, so that the force of the jack can jack up the suspended steel cofferdam 1 in water.
In this embodiment, the steel cofferdam positioning system further includes a fixing member 11, and when the steel cofferdam 1 is located at a specified elevation, the positioning member 2 is fixedly connected with the steel cofferdam 1 through the fixing member 11, so as to prevent the steel cofferdam 1 from deviating.
In this embodiment, the fixing member 11 is a stiffening plate, and the stiffening plate is welded to the steel cofferdam 1 and the positioning member 2, specifically, in this embodiment, the stiffening plate is welded to the positioning member 2 and the mounting frame. After welding, the steel cofferdam 1 can not slide up and down along the positioning piece 2 any more, but is fixed at the designed elevation.
In the embodiment, the first traction side 15 is provided with an anchor pier 17, a plurality of power parts 13 and a plurality of traction parts 14, the power parts 13 are arranged on the anchor pier 17, and the traction parts 14 are connected with the power parts 13 and the steel cofferdam; and a plurality of traction members 14 are arranged in a crossed manner and used for adjusting the horizontal position of the steel cofferdam. The traction members 14 are arranged crosswise, so that the deflection and the movement of the steel cofferdam can be more stably dragged.
In this embodiment, the second traction side 16 is provided with a trestle 6, a plurality of power parts 13 and a plurality of traction parts 14, the power parts 13 are arranged on the trestle 6, and the traction parts 14 are connected with the power parts 13 and the steel cofferdam; wherein, a plurality of traction members 14 can pull the steel cofferdam along the direction opposite to the rivers and be used for resisting the water flow power, and a plurality of traction members 14 are arranged crosswise and are used for adjusting the horizontal position of steel cofferdam.
In this embodiment, the power member 13 is a motor, and the traction member 14 is a wire rope. In other embodiments, the power member 13 and the traction member 14 may be windlasses.
The utility model discloses a concrete work progress, including following step:
s1, excavating a foundation pit 3 needing to be provided with a steel cofferdam positioning system;
s2, slidably connecting the positioning piece 2 with the steel cofferdam 1, and pouring water into the steel cofferdam 1 to sink;
s3, when the steel cofferdam 1 is adjusted to a specified elevation through the adjusting piece 10, fixedly connecting the steel cofferdam 1 with the positioning piece 2;
s4, driving a traction piece 14 through a power piece 13 to adjust the horizontal position of the steel cofferdam 1 to a specified position;
and S5, after the vertical and horizontal positioning is finished, backfilling the foundation pit 3 at the outer side of the steel cofferdam 1, and backfilling by adopting broken stones 5.
By arranging the positioning piece 2 and the adjusting piece 10, the steel cofferdam 1 is quickly and accurately positioned, the construction period is shortened, and the construction time is short; the number of underwater operation personnel is reduced, and the construction risk is reduced; simple structure, construction cost is low, is fit for popularizing and applying.
Step S1 further comprises the steps of:
s11, carrying out underwater blasting on the foundation pit 3 needing to be provided with the steel cofferdam positioning system;
s12, removing slag of the foundation pit 3, and enabling the pit bottom elevation of the foundation pit 3 to be lower than the designed bottom elevation of the steel cofferdam positioning system;
and S13, after the foundation pit 3 is excavated, erecting a support trestle 6.
Slag removal is carried out after underwater explosion, so that space is provided for the positioning of the subsequent steel cofferdam 1; and the trestle 6 is erected to provide an operation platform for positioning the subsequent steel cofferdam 1.
Step S2 further includes the steps of:
s21, fixing the hoop 12 and the mounting rack 8 to the steel cofferdam 1;
s22, connecting the positioning piece 2 with the steel cofferdam 1 through the hoop 12 and the mounting rack 8 on the trestle 6;
s23, adjusting the position of the steel cofferdam 1 to be horizontal, and performing water injection sinking on the steel cofferdam 1;
s24, when the steel cofferdam 1 sinks to the position, the positioning piece 2 is lowered, and the lower end of the positioning piece 2 is supported on the rock stratum 4 of the foundation pit 3.
The top of the positioning member 2 needs to be higher than the construction water level 7 to leave a working space for connecting the mounting frame 8 and performing the subsequent connection of the supporting member 9 and the installation of the adjusting member 10.
Step S3 further includes the steps of:
s31, welding a support piece 9 on the positioning piece 2, installing an adjusting piece 10 on the support piece 9, and enabling the upper side of the adjusting piece 10 to abut against the installation frame 8;
s32, pre-jacking the steel cofferdam 1 through the adjusting piece 10, and performing water injection weight pressing on the steel cofferdam 1;
s33, measuring the elevations of the periphery of the steel cofferdam 1, and adjusting the elevations of the steel cofferdam 1 to the designed elevations through the adjusting piece 10;
and S34, compounding the elevation and the verticality of the steel cofferdam 1, welding a stiffening plate between the positioning piece 2 and the steel cofferdam 1 after the elevation and the verticality of the steel cofferdam 1 are qualified, and fixing the positioning piece 2 and the steel cofferdam 1.
Through setting up setting element 2 and regulating part 10, realized the quick accurate location to steel cofferdam 1, shortened construction period, the engineering time is short.
Step S4 further includes the steps of:
s41, constructing an anchor pier 17 on the first traction side 15, erecting a plurality of power parts 13 on the anchor pier 17, and arranging a plurality of traction parts 14 in a crossed manner for adjusting the horizontal position of the steel cofferdam 1;
s42, erecting a power piece 13 on the trestle 6 on the second traction side 16, arranging a plurality of traction pieces 14 along the direction opposite to the water flow for resisting the water flow force, and then arranging a plurality of traction pieces 14 in a crossed manner for adjusting the horizontal position of the steel cofferdam 1.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the structure of the present invention in any way, and the optimization can be performed according to the actual engineering. Any modification, equivalent change and decoration to the above embodiments according to the technical principle of the present invention are still within the scope of the technical solution of the present invention.
Claims (5)
1. The steel cofferdam with the positioning function is characterized by comprising a vertical positioning device and a horizontal positioning device;
the vertical positioning device comprises positioning pieces and adjusting pieces, the positioning pieces are arranged on the outer side of the steel cofferdam at intervals, and the positioning pieces can slide up and down along the outer side wall plate of the steel cofferdam; the adjusting piece is arranged between the positioning piece and the steel cofferdam, and can lift the steel cofferdam up and down by taking the positioning piece as a supporting point, wherein when the steel cofferdam is at a specified elevation, the positioning piece is fixedly connected with the steel cofferdam;
the horizontal positioning device comprises a power part and a traction part, the traction part is used for adjusting the horizontal position of the steel cofferdam under the driving of the power part, the horizontal positioning device comprises a first traction side and a second traction side, the first traction side is positioned on one side of the steel cofferdam, and the second traction side is opposite to the first traction side;
the steel cofferdam also comprises a connecting piece, wherein the connecting piece is arranged on the outer side wall plate of the steel cofferdam, and the connecting piece is used for connecting the positioning piece with the steel cofferdam.
2. The steel cofferdam with positioning function as claimed in claim 1, wherein said connectors comprise hoops, a plurality of said hoops are fixed on the outer side wall plate of said steel cofferdam, said positioning members pass through said hoops, said hoops are used for horizontally limiting said positioning members;
the connecting piece further comprises a mounting frame, the mounting frame is fixed to an opening, close to the upper end, of an outer side wall plate of the steel cofferdam, and the positioning piece penetrates through the mounting frame.
3. The steel cofferdam with positioning function of claim 1, wherein said positioning members are steel legs, and the height of said steel legs is not less than the height of said steel cofferdam.
4. The steel cofferdam with positioning function of claim 1, wherein said steel cofferdam further comprises a supporting member, said supporting member is fixed on said positioning member, said adjusting member is disposed on said supporting member; the support piece is a bracket.
5. The steel cofferdam with positioning function of claim 1, wherein said adjusting member is a jack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123419783.1U CN217601478U (en) | 2021-12-31 | 2021-12-31 | Steel cofferdam with locate function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123419783.1U CN217601478U (en) | 2021-12-31 | 2021-12-31 | Steel cofferdam with locate function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217601478U true CN217601478U (en) | 2022-10-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123419783.1U Active CN217601478U (en) | 2021-12-31 | 2021-12-31 | Steel cofferdam with locate function |
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| Country | Link |
|---|---|
| CN (1) | CN217601478U (en) |
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2021
- 2021-12-31 CN CN202123419783.1U patent/CN217601478U/en active Active
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