CN215329972U - Steel cofferdam positioning system for deep water bare rock geology - Google Patents
Steel cofferdam positioning system for deep water bare rock geology Download PDFInfo
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- CN215329972U CN215329972U CN202121682328.8U CN202121682328U CN215329972U CN 215329972 U CN215329972 U CN 215329972U CN 202121682328 U CN202121682328 U CN 202121682328U CN 215329972 U CN215329972 U CN 215329972U
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Abstract
The utility model discloses a steel cofferdam positioning system for deep water bare rock geology, which is used for positioning a steel cofferdam and facilitating the sinking of a steel enclosure into a foundation pit, and comprises a positioning tail anchor, a positioning ground anchor, a tug, a positioning steel wire rope, a platform winch and a tail anchor steel wire rope, wherein the positioning tail anchor and the positioning ground anchor are respectively connected with the downstream end of the steel cofferdam through the positioning steel wire rope, and the positioning tail anchor and the positioning ground anchor are both anchored into a rock layer of a riverbed; the tug is connected to the side edge of the steel cofferdam through a steel wire rope; the platform winch is connected to the upstream end of the steel cofferdam through a tie wire rope. The steel cofferdam positioning system for the deepwater bare rock geology can accurately position the cofferdam, and the cofferdam can sink into a foundation pit according to the design position when sinking, so that the position of the cofferdam is ensured to accord with the design positioning.
Description
Technical Field
The utility model relates to the field of steel cofferdam positioning systems. More particularly, the utility model relates to a steel cofferdam positioning system for deep water bare rock geology.
Background
The construction of the bridge deep water foundation usually adopts a steel cofferdam to form a dry construction environment, and after the steel cofferdam is assembled on water, the steel cofferdam needs to be positioned and sunk to a design elevation. When the foundation is in deep water and is in a bare rock geological condition, the problems of deep water level, high flow speed, inconvenience in inserting and beating the steel casing and the like exist, and therefore the construction mode of firstly coffering and then piling is more reasonable. However, due to the influence of factors such as water flow and wind direction, the steel cofferdam is subjected to large lateral pressure in the positioning and sinking process, so that the whole steel cofferdam is easy to slide. Therefore, the positioning sinking of the steel cofferdam and the positioning before the pile foundation construction are still difficult problems.
SUMMERY OF THE UTILITY MODEL
To achieve these objects and other advantages in accordance with the purpose of the utility model, a preferred embodiment of the present invention provides a steel cofferdam positioning system for deep water bare rock geology for positioning a steel cofferdam to facilitate sinking of a steel surround into a foundation pit, the steel cofferdam positioning system comprising, a positioning tail anchor, a positioning ground anchor, a tug and a platform hoist, wherein the positioning tail anchor, the positioning ground anchor, the tug and the platform hoist are connected to each other by a connecting rod, and the steel cofferdam positioning system is connected to the platform hoist by a connecting rod
The positioning tail anchor and the positioning ground anchor are respectively connected to the downstream end of the steel cofferdam through steel wire ropes, and are anchored into a rock layer of a riverbed;
the tug is connected to the side edge of the steel cofferdam through a steel wire rope;
the platform winch is connected to the upstream end of the steel cofferdam through a steel wire rope.
According to a preferred embodiment of the utility model, the steel cofferdam wall body is welded with a guiding pull lug, a steering pull ring, a cofferdam positioning pull lug and a floating pull lug.
According to a preferred embodiment of the present invention, further comprising a positioning platform located upstream of the steel cofferdam, the platform hoist being disposed on the positioning platform.
According to a preferred embodiment of the present invention, the anchoring device further comprises an anchoring boat for anchoring the positioning tail anchor and the positioning ground anchor.
According to a preferred embodiment of the present invention, a local reinforced steel beam is further disposed on the positioning platform.
According to a preferred embodiment of the utility model, the positioning platform is further provided with a platform positioning pull lug which is connected with a cofferdam positioning pull lug on the upstream side of the steel cofferdam through a cofferdam steel wire rope.
According to a preferred embodiment of the utility model, the positioning platform is further provided with a guide wheel which can randomly adjust the traction angle of the cofferdam steel wire rope.
According to a preferred embodiment of the present invention, a tackle block is further provided on the positioning platform and connected thereto.
The utility model at least comprises the following beneficial effects:
1. the steel cofferdam positioning system for the deepwater bare rock geology can accurately position the cofferdam, and the cofferdam can sink into a foundation pit according to the design position when sinking, so that the position of the cofferdam is ensured to accord with the design positioning.
2. The positioning platform adopts the existing temporary construction structure, so that the construction cost is saved, and the aim of accurately positioning the steel cofferdam is fulfilled.
Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model.
Drawings
FIG. 1 is a top view of a steel cofferdam positioning system for deep water bare rock geology in the present invention;
fig. 2 is a front view of a steel cofferdam positioning system for deep water bare rock geology.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the utility model by referring to the description text.
The following description is presented to disclose the utility model so as to enable any person skilled in the art to practice the utility model. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the utility model, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the utility model.
It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be constructed and operated in a particular orientation and thus are not to be considered limiting.
It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.
As shown in figure 1, the steel cofferdam positioning system for the deep water bare rock geology is used for positioning the steel cofferdam and facilitating the sinking of a steel enclosure into a foundation pit 19, and comprises a positioning tail anchor 15, a positioning ground anchor 16, a tug 17 and a platform winch 6, wherein the positioning tail anchor 15, the positioning ground anchor 16, the tug 17 and the platform winch 6 are combined into a whole
The positioning tail anchor 15 and the positioning ground anchor 16 are respectively connected to the downstream end of the steel cofferdam 1 through steel wire ropes, and the positioning tail anchor 15 and the positioning ground anchor 16 are both anchored into a rock layer of a riverbed;
the tug 17 is connected to the side edge of the steel cofferdam 1 through a steel wire rope;
the platform winch 6 is connected to the upstream end of the steel cofferdam 1 through a steel wire rope. The platform winch 6 is arranged on the positioning platform 5, and the positioning platform 5 is positioned on the upstream of the steel cofferdam.
In the above embodiment, the platform winch 6, the positioning tail anchor 15 and the positioning ground anchor 16 are used for fixing the upstream end and the downstream end of the steel cofferdam, the tug 17 is used for fixing the side edge of the steel cofferdam 1, and the positioning tail anchor 15 and the positioning ground anchor 16 are anchored at the preset positions, so that the steel cofferdam can be accurately positioned.
The positioning platform 5 is of an existing construction temporary structure, and does not need to be additionally arranged, so that the construction cost is saved, and the purpose of accurately positioning the steel cofferdam is achieved.
The construction process of the steel cofferdam positioning platform of the embodiment is as follows:
after the steel cofferdam is transported to the designed position, a positioning tail anchor 15 and a positioning ground anchor 16 are anchored and buried on the rock riverbed, and the positioning ground anchor adopts double-spliced HN 600X 200 section steel with the length of 6m and the buried depth of 2 m.
During preliminary location, will fix a position the tail anchor 15 through throwing anchor ship 18 and set up to the design position, start steel cofferdam hoist engine 11 simultaneously and will connect in the location wire rope of fixing a position the tail anchor and take power slightly, tug 17 will just push away towards the design direction slowly in cofferdam 1 afterwards, the wire rope is tightened up simultaneously to the hoist engine on the positioning platform 5, coordinate through three-dimensional positioning system and adjust, the steel cofferdam reaches the design position basically, tug 17 stabilizes steel cofferdam 1 afterwards, all wire rope all take the back tightly, the tug leaves, accomplish preliminary location.
The rock riverbed needs to be pre-excavated before being lowered, a foundation pit is formed, and the leveling riverbed is cleaned.
When the cofferdam is transferred, the obvious inclination angle of the cofferdam is kept, and the platform positioning system adjusts in real time through retracting and positioning steel wire ropes.
After the transfer is finished, the position of the cofferdam is finely adjusted again to ensure that the design requirements are met, and then the steel wire rope is tensioned until the pile foundation construction is finished.
The other embodiment can also comprise the following technical scheme that a guiding pull lug 2, a steering pull ring 3, a cofferdam positioning pull lug 4 and a floating pull lug 14 are welded on the wall body of the steel cofferdam so as to be used for connecting various steel wire ropes and facilitate the later pulling.
In another embodiment, the positioning platform 5 may further include a local reinforcing steel beam 7, so as to reinforce the strength of the positioning platform 5. And the positioning platform 5 is also provided with a platform positioning pull lug 8 which is connected with a cofferdam positioning pull lug at the upstream side of the steel cofferdam through a cofferdam steel wire rope.
In another embodiment, the technical scheme is that the positioning platform 5 is further provided with a guide wheel 10, and the traction angle of the cofferdam steel wire rope can be adjusted at will.
And a pulley group 13 is also arranged on the positioning platform 5, achieves the purpose of changing the angle of the steel wire rope through the combination of related pulleys, and is connected with a platform winch and a platform positioning pull lug.
While embodiments of the utility model have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the utility model pertains, and further modifications may readily be made by those skilled in the art, it being understood that the utility model is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (7)
1. A steel cofferdam positioning system for deep water bare rock geology is used for positioning a steel cofferdam and facilitating sinking of a steel enclosure into a foundation pit, and is characterized in that the steel cofferdam positioning system comprises a positioning tail anchor, a positioning ground anchor, a tug and a platform winch, wherein the positioning tail anchor, the positioning ground anchor, the tug and the platform winch are combined
The positioning tail anchor and the positioning ground anchor are respectively connected to the downstream end of the steel cofferdam through steel wire ropes, and are anchored into a rock layer of a riverbed;
the tug is connected to the side edge of the steel cofferdam through a steel wire rope;
the platform winch is connected to the upstream end of the steel cofferdam through a steel wire rope.
2. The deep water bare rock geology steel cofferdam positioning system of claim 1, wherein the steel cofferdam wall body is welded with a guiding pull lug, a steering pull ring, a cofferdam positioning pull lug and a floating pull lug.
3. The steel cofferdam positioning system for deep water bare rock geology of claim 1, further comprising a positioning platform located upstream of the steel cofferdam, the platform hoist being disposed on the positioning platform.
4. The steel cofferdam positioning system for deep water bare rock geology according to claim 1, further comprising an anchor throwing boat to throw the positioning tail anchor and the positioning ground anchor.
5. The deep water bare rock geology steel cofferdam positioning system of claim 3, wherein the positioning platform is further provided with locally reinforced steel beams.
6. The steel cofferdam positioning system for bare rock geology in deep water of claim 3, wherein the positioning platform is further provided with platform positioning pulling lugs, and the platform positioning pulling lugs are connected with cofferdam positioning pulling lugs on the steel cofferdam through cofferdam wire ropes.
7. The steel cofferdam positioning system for bare rock geology in deep water of claim 6, characterized in that a guide wheel is further arranged on the positioning platform, and the guide wheel can be used for freely adjusting the traction angle of the steel wire rope of the cofferdam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121682328.8U CN215329972U (en) | 2021-07-22 | 2021-07-22 | Steel cofferdam positioning system for deep water bare rock geology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121682328.8U CN215329972U (en) | 2021-07-22 | 2021-07-22 | Steel cofferdam positioning system for deep water bare rock geology |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114396063A (en) * | 2021-12-31 | 2022-04-26 | 中交一公局集团有限公司 | Steel cofferdam positioning adjustment system and positioning method |
| CN114541438A (en) * | 2021-12-31 | 2022-05-27 | 中交一公局集团有限公司 | Steel cofferdam with positioning function and positioning method thereof |
| CN114718097A (en) * | 2022-04-25 | 2022-07-08 | 中交第二航务工程局有限公司 | Quick positioning method for deep water steel cofferdam or open caisson |
| CN115075272A (en) * | 2022-07-11 | 2022-09-20 | 中铁大桥局集团第二工程有限公司 | Positioning method and positioning system for steel boxed cofferdam in deepwater area |
-
2021
- 2021-07-22 CN CN202121682328.8U patent/CN215329972U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114396063A (en) * | 2021-12-31 | 2022-04-26 | 中交一公局集团有限公司 | Steel cofferdam positioning adjustment system and positioning method |
| CN114541438A (en) * | 2021-12-31 | 2022-05-27 | 中交一公局集团有限公司 | Steel cofferdam with positioning function and positioning method thereof |
| CN114718097A (en) * | 2022-04-25 | 2022-07-08 | 中交第二航务工程局有限公司 | Quick positioning method for deep water steel cofferdam or open caisson |
| CN114718097B (en) * | 2022-04-25 | 2023-09-22 | 中交第二航务工程局有限公司 | Quick positioning method for deepwater steel cofferdam or open caisson |
| CN115075272A (en) * | 2022-07-11 | 2022-09-20 | 中铁大桥局集团第二工程有限公司 | Positioning method and positioning system for steel boxed cofferdam in deepwater area |
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