CN111851542A - Self-sinking combined steel cofferdam for channel side slope maintenance - Google Patents
Self-sinking combined steel cofferdam for channel side slope maintenance Download PDFInfo
- Publication number
- CN111851542A CN111851542A CN202010757209.8A CN202010757209A CN111851542A CN 111851542 A CN111851542 A CN 111851542A CN 202010757209 A CN202010757209 A CN 202010757209A CN 111851542 A CN111851542 A CN 111851542A
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- base
- cofferdam
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/02—Restraining of open water
- E02D19/04—Restraining of open water by coffer-dams, e.g. made of sheet piles
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/10—Dams; Dykes; Sluice ways or other structures for dykes, dams, or the like
- E02B3/106—Temporary dykes
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
- E02B3/121—Devices for applying linings on banks or the water bottom
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B5/00—Artificial water canals, e.g. irrigation canals
- E02B5/02—Making or lining canals
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Revetment (AREA)
Abstract
The invention discloses a self-sinking type combined steel cofferdam for channel side slope maintenance, which comprises a plurality of base blocks and two base corner blocks, wherein one end of each base block is provided with a mortise, the other end of each base block is provided with a tenon matched with the mortise, one end of each base corner block is provided with the mortise, the other end of each base corner block is provided with the tenon, the cofferdam base is integrally formed by a plurality of base blocks which are sequentially connected through the two symmetrically arranged base corner blocks, and the tops of the base blocks and the base corner blocks are provided with slots so as to form a mounting groove at the top of the cofferdam base; a plurality of support columns are inserted in the mounting groove, a baffle is inserted between the two support columns, the bottom of the baffle on the side part is matched with the gradient of the channel slope, and the tail end of the cofferdam base is connected with a weight box; the invention is a unit combined structure, can expand the length and the width according to the actual condition, and can be recycled and reused after the construction is finished, thereby realizing the rapid enclosure of the channel side slope surface and providing a working space for the maintenance of the channel side slope lining plate.
Description
Technical Field
The invention belongs to the technical field of channel side slope maintenance, and particularly relates to a self-sinking type combined steel cofferdam for channel side slope maintenance, which is mainly used for quickly retaining the slope surface of a channel side, thereby providing a working space for channel side slope lining board maintenance.
Background
The channel side slope lining plate is damaged or collapsed occasionally, a large water retaining device with enough strength is needed to protect construction, a traditional large water retaining cofferdam is a protective facility which is temporarily built for building a building which is used for a long time or repairing the damaged building, a concrete pouring mode is usually adopted to manufacture the cofferdam, for example, Chinese patent document, publication No. CN107859047A discloses a construction method of a precast concrete block combined cofferdam, the precast concrete block combined cofferdam is mainly used to form a double-wall middle filling earthwork of the cofferdam to construct a river cofferdam, thereby playing a role of retaining water, providing a waterless working face for construction in small and medium river channels, lakes and ponds, and being an important technical measure for water-involved construction of municipal and water conservancy projects. The cofferdam construction method is mainly characterized in that special concrete blocks are prefabricated, double walls of the cofferdam are formed through a proper combination mode, and soil is filled in the middle of the cofferdam according to design requirements, so that the cofferdam with the width of 1-6 meters and the height of 2-6 meters is formed. The method solves the problems of high manual operation strength, low efficiency, poor safety, low turnover rate and the like in the traditional earth cofferdam construction (filling earth in the middle of bagged earth slope protection or building an earth dike). The technology has the advantages of high efficiency, strong safety, low cost, good effect and the like, and is simple in process, easy to obtain materials and suitable for building the earth cofferdam in the flat sections of the medium and small riverways, lakes and pond foundations.
Most of the existing water retaining cofferdams need to be internally added with some fillers with larger weight to increase the friction force of the cofferdams to the ground or fix bases of the existing water retaining cofferdams on a side slope to keep stable, so that the traditional cofferdams have the defects of higher installation difficulty, inconvenience in transportation, incapability of being recycled, large construction amount and pollution to drinking water sources, and are not suitable for being used in the environment.
Disclosure of Invention
The invention aims to provide a self-sinking combined steel cofferdam for channel slope maintenance, which can flexibly expand the length and the width according to the actual condition and can be recycled after construction; the technical scheme adopted for achieving the purpose is as follows:
a self-sinking combined steel cofferdam for channel side slope maintenance comprises a plurality of base blocks and two base corner blocks, wherein one end of each base block is provided with a mortise, the other end of each base block is provided with a tenon matched with the mortise, one end of each base corner block is provided with the mortise, the other end of each base corner block is provided with the tenon, the cofferdam base is integrally formed by a plurality of base blocks which are sequentially connected through the two symmetrically arranged base corner blocks, and slots are formed in the tops of the base blocks and the base corner blocks so as to form mounting grooves in the top of the cofferdam base; a plurality of support columns are inserted in the mounting groove, a baffle is inserted between the two support columns, the bottom of the baffle at the side part is matched with the gradient of the channel slope, the tail end of the cofferdam base is connected with a weight box, and a weight is arranged in the weight box.
Preferably, a supporting rod is arranged on the backwater side of the supporting column, and a supporting plate used for supporting on the channel side slope is arranged at the tail end of the supporting rod.
Preferably, the bottom of the cofferdam base and the bottom of the supporting plate are both provided with anti-skidding rubber mats.
Preferably, the bracing piece includes the internal thread sleeve, and the internal thread opposite direction at internal thread sleeve both ends is including internal thread sleeve one end threaded connection has the connecting rod, including internal thread sleeve other end threaded connection has lower connecting rod, it articulates on support column back of the body water side to go up the connecting rod free end, and the free end of connecting rod is connected under in the backup pad.
Preferably, expansion water stop rubber strips are arranged between every two adjacent base blocks, between each base block and each base corner block, between each baffle and each support column and between each baffle and each cofferdam base.
Preferably, a top cover plate is arranged at the top of the baffle plate along the trend direction of the cofferdam base. .
The invention has the following beneficial effects: (1) the steel cofferdam is formed by properly combining the base block, the base corner block, the baffle and the support column, so that the steel cofferdam with the size suitable for a construction site can be quickly combined;
(2) the steel cofferdam keeps stable position under the action of self gravity and friction force, and meanwhile, a counterweight with proper weight is arranged in the counterweight box to play a role of fixing the whole steel cofferdam so as to prevent the steel cofferdam from sliding downwards and dislocating;
(3) the bottom of the cofferdam base and the bottom of the supporting plate are both provided with anti-skidding rubber mats, so that the friction force between the anti-skidding rubber mats and the slope surface of the side of the channel is increased, the side slope of the constructed channel is prevented from being damaged, and the anti-seepage effect is realized;
(4) the supporting rod is arranged into the structural form of the internal thread sleeve, the upper connecting rod and the lower connecting rod, so that the length of the supporting rod can be quickly adjusted by rotating the internal thread sleeve to adapt to channel slopes with different slope ratios;
(5) the self-sinking combined steel cofferdam is of a unit combined structure, the length and the width can be expanded according to actual conditions, and the cofferdam can be recycled and reused after construction, so that the rapid blocking of the channel side slope is realized, and a working space is provided for the maintenance of the channel side slope lining plate.
Drawings
FIG. 1 is a front view of the present invention;
fig. 2 is a top view of fig. 1.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1, which is a schematic structural diagram of the cofferdam base 7 when viewed from a river to a channel slope direction, and shown in fig. 2, the cofferdam base comprises a plurality of base blocks 8 and two base corner blocks 6, wherein one end of each base block 8 is provided with a mortise, the other end of each base block 8 is provided with a tenon matched with the mortise, one end of each base corner block 6 is provided with the mortise, the other end of each base corner block 6 is provided with the tenon, so that the plurality of base blocks 8 are sequentially connected through the two base corner blocks 6 which are symmetrically arranged, the cofferdam base 7 is integrally formed, and slots are arranged at the tops of the base blocks 8 and the base corner blocks 6, so that mounting slots are formed at the top of the cofferdam base 7; a plurality of support columns 5 are inserted in the mounting groove, a baffle 4 is inserted between the two support columns 5, the bottom of the baffle 4 at the side part is matched with the gradient of the channel slope, the tail end of the cofferdam base 7 is connected with a weight box 2, and a weight is arranged in the weight box 2.
In order to increase the overall water pressure resistance and ensure the overall stability, a support rod 9 is arranged on the backwater side of the support column 5, and a support plate 10 used for supporting on the channel side slope is arranged at the tail end of the support rod 9.
The bottom of the cofferdam base 7 and the bottom of the supporting plate 10 are both provided with anti-slip rubber pads, so that the friction force between the anti-slip rubber pads and the slope surface of the channel side is increased, and the anti-leakage effect is also achieved while the damage to the side slope of the constructed channel is prevented.
Expansion water stop rubber strips are arranged between two adjacent base blocks 8, between the base blocks 8 and the base corner blocks 6, between the baffle 4 and the supporting column 5 and between the baffle 4 and the cofferdam base 7.
And finally, a top cover plate 3 is arranged at the top of all the baffle plates 4 along the moving direction of the cofferdam base 7, and a row of warning lamps can be arranged on the top cover plate 3 to remind a constructor.
As shown in figure 1, when the cofferdam foundation is used, the cofferdam foundation is integrally assembled on a river bank, specifically, a plurality of foundation blocks 8 and two foundation corner blocks 6 with proper quantity are selected according to the size of a construction site and are sequentially connected into the cofferdam foundation 7 through the matching connection action of tenons and mortises, then assembling the supporting columns 5 and the baffle plates 4, arranging expansion water-stop rubber strips between two adjacent base blocks 8, between the base blocks 8 and the base corner blocks 6, between the baffle plates 4 and the supporting columns 5 and between the baffle plates 4 and the cofferdam base 7 after the assembling is finished, hoisting and placing the assembly by a winch, sliding the assembly into a designated position along the slope of the channel side slope and fixing the assembly, or directly placing the assembly at the designated position by a crane and installing the assembly under water by matching a diver, and finally connecting the tail end of the cofferdam base 7 to the weight box 2, and filling weights with proper weight in the weight box 2 according to the integral weight; and after the construction is finished, the construction material is recycled.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: it is to be understood that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof, but such modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. A self-sinking type combined steel cofferdam for channel side slope maintenance is characterized by comprising a plurality of base blocks and two base corner blocks, wherein one end of each base block is provided with a mortise, the other end of each base block is provided with a tenon matched with the mortise, one end of each base corner block is provided with the mortise, the other end of each base corner block is provided with the tenon, the cofferdam base is integrally formed by a plurality of base blocks which are sequentially connected through the two symmetrically arranged base corner blocks, and slots are formed in the tops of the base blocks and the base corner blocks so as to form mounting slots in the tops of the cofferdam base; a plurality of support columns are inserted in the mounting groove, a baffle is inserted between the two support columns, the bottom of the baffle at the side part is matched with the gradient of the channel slope, the tail end of the cofferdam base is connected with a weight box, and a weight is arranged in the weight box.
2. The self-sinking type combined steel cofferdam for channel slope maintenance as claimed in claim 1, wherein a support bar is provided on the backwater side of the support column, and a support plate for supporting on the channel slope is provided at the end of the support bar.
3. The self-sinking type combined steel cofferdam for maintaining the channel side slope as claimed in claim 2, wherein the bottom of the cofferdam base and the bottom of the supporting plate are both provided with anti-skid rubber pads.
4. The channel side slope maintenance self-sinking type combined steel cofferdam of claim 2 or 3, wherein the supporting rod comprises an internal thread sleeve, the internal thread direction of the two ends of the internal thread sleeve is opposite, one end of the internal thread sleeve is in threaded connection with an upper connecting rod, the other end of the internal thread sleeve is in threaded connection with a lower connecting rod, the free end of the upper connecting rod is hinged on the backwater side surface of the supporting column, and the supporting plate is connected with the free end of the lower connecting rod.
5. The self-sinking type combined steel cofferdam for channel slope maintenance of claim 4, wherein expansion water-stop rubber strips are arranged between two adjacent base blocks, between a base block and a base corner block, between a baffle and a support column, and between a baffle and a cofferdam base.
6. The self-sinking type combined steel cofferdam for channel slope maintenance as claimed in claim 4, wherein a top cover plate is provided on the top of the dam along the direction of the cofferdam base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010757209.8A CN111851542A (en) | 2020-07-31 | 2020-07-31 | Self-sinking combined steel cofferdam for channel side slope maintenance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010757209.8A CN111851542A (en) | 2020-07-31 | 2020-07-31 | Self-sinking combined steel cofferdam for channel side slope maintenance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111851542A true CN111851542A (en) | 2020-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010757209.8A Pending CN111851542A (en) | 2020-07-31 | 2020-07-31 | Self-sinking combined steel cofferdam for channel side slope maintenance |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207944468U (en) * | 2018-01-03 | 2018-10-09 | 宋力 | A kind of prefabricated assembled combination water conservancy project cofferdam device |
| CN109403363A (en) * | 2018-12-14 | 2019-03-01 | 南水北调中线干线工程建设管理局 | A kind of self balance combined water-retaining cofferdam and its construction method |
| CN109577278A (en) * | 2018-12-14 | 2019-04-05 | 郑州大学 | A kind of water channel side slope self-balancing type double-walled cofferdam |
| CN109778882A (en) * | 2019-01-30 | 2019-05-21 | 华北水利水电大学 | The closing standard channel steel cofferdam of inclination angle assembling |
| CN210031865U (en) * | 2019-03-23 | 2020-02-07 | 北京市朝阳水利工程有限公司 | Cofferdam capable of being assembled quickly |
-
2020
- 2020-07-31 CN CN202010757209.8A patent/CN111851542A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207944468U (en) * | 2018-01-03 | 2018-10-09 | 宋力 | A kind of prefabricated assembled combination water conservancy project cofferdam device |
| CN109403363A (en) * | 2018-12-14 | 2019-03-01 | 南水北调中线干线工程建设管理局 | A kind of self balance combined water-retaining cofferdam and its construction method |
| CN109577278A (en) * | 2018-12-14 | 2019-04-05 | 郑州大学 | A kind of water channel side slope self-balancing type double-walled cofferdam |
| CN109778882A (en) * | 2019-01-30 | 2019-05-21 | 华北水利水电大学 | The closing standard channel steel cofferdam of inclination angle assembling |
| CN210031865U (en) * | 2019-03-23 | 2020-02-07 | 北京市朝阳水利工程有限公司 | Cofferdam capable of being assembled quickly |
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Application publication date: 20201030 |