CN110805004A - Circular city view lake overflow weir structure - Google Patents
Circular city view lake overflow weir structure Download PDFInfo
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- CN110805004A CN110805004A CN201910987343.4A CN201910987343A CN110805004A CN 110805004 A CN110805004 A CN 110805004A CN 201910987343 A CN201910987343 A CN 201910987343A CN 110805004 A CN110805004 A CN 110805004A
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- weir
- lake
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- overflow
- urban landscape
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 8
- 230000005484 gravity Effects 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims 1
- 238000009991 scouring Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 abstract description 2
- 230000000903 blocking effect Effects 0.000 abstract description 2
- 241001365789 Oenanthe crocata Species 0.000 description 5
- 238000010276 construction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 241000251468 Actinopterygii Species 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000001617 migratory effect Effects 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B8/00—Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
- E02B8/06—Spillways; Devices for dissipation of energy, e.g. for reducing eddies also for lock or dry-dock gates
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Revetment (AREA)
Abstract
The invention discloses a circular urban landscape lake overflow weir structure, wherein the whole weir body on the plane is a perfect circular structure, the upstream side is 240 degrees of the overflow weir, the downstream side is 120 degrees of the pedestrian overpass, and the pedestrian overpass is connected with two banks of lake dikes. The height of the bridge deck of the pedestrian overpass is higher than that of the weir crest, and the height difference needs to be larger than the weir crest water head under the design flood. The circular urban landscape lake weir body structure provided by the invention has the advantages that the 240-degree upstream of the circle is the overflow weir, the arc length of the front edge of the weir crest is 2.6 times of the straight length of two end points of the weir crest, the circular urban landscape lake weir body structure is a labyrinth weir structure, larger flood can be discharged under the conditions of the same overflow width and the same water head, and the functions of controlling the water level of the lake to rise and avoiding flooding or scouring on two banks are achieved. The whole weir body structure gives consideration to flood discharge and traffic functions, overlooks from a distance just like blocking lake water in a round of a moon, and is attractive in appearance, simple and easy to construct and convenient to manage. Is suitable for being applied to urban landscape lake bodies.
Description
Technical Field
The invention relates to the technical field of hydraulic and hydroelectric engineering, in particular to a circular urban landscape lake overflow weir structure.
Background
In recent years, along with the construction of sponge cities, a large number of landscape lakes emerge on urban river channels, and because the dual requirements of lake formation of water storage, landscape construction, smooth flood running in a flood season and avoidance of flooding are considered, common overflow weirs of the urban landscape lakes are flap dams, rubber dams and linear weirs. The weirs really play a role in safely storing water into lakes and discharging flood, but the weirs are monotonous in shape and poor in landscape effect, are not integrated with the constructed beautiful lakes, have the problems that the flap dam is often blocked by sundries, the rubber dam is aged and the like in the flood season, and bring inconvenience to operation management.
Patent documents related to landscape lake overflow weirs, such as utility model patent 201821415969.5 applied by university of Dalian, disclose a secondary drop overflow dam with landscape effect, at least comprising a dam body, wherein the upper part of the dam body is provided with a landscape stone coping, the outer side of the dam body is provided with a secondary drop platform and a stilling pool, a reinforced concrete support column is arranged between the secondary drop platform and the stilling pool at the outer side of the dam body, and a plurality of reinforced concrete support columns are uniformly distributed along the length direction of the dam body; the outer edge of the secondary drop platform is of an arc-shaped structure; a plurality of arc-shaped structures are uniformly distributed along the length direction of the dam body; paving a pebble layer A in the secondary water drop platform; a pebble layer B is arranged in the absorption basin. According to the scheme, landscape stones are pressed to form the overflow weir crest of the overflow dam, a pebble layer is laid inside the absorption basin, and the pebble layer plays a role in reducing water flow scouring and has a landscape decoration effect. This scheme has set up the second grade drop platform, can form the effect of an annular cascade when rivers fall, has strengthened the view aesthetic property.
For example, the invention patent 201810974724.4 applied by the institute of hydroelectricity survey design in Zhejiang province discloses an ecological landscape barrage and a construction method thereof, wherein the ecological landscape barrage comprises a barrage and various levels of drop waters, the barrage is a water retaining building, the downstream of the barrage is provided with a zigzag-shaped multistage serial drop water next to the barrage so as to form a multistage artificial waterfall with variable drop height, drop ponds are respectively arranged between the barrage and the first level of drop water and between the drop waters so as to dissipate energy, and simultaneously, the cascaded multistage drop water is utilized to arrange a fishway or directly form a fishladder to be used as a biological migration channel; all the drop ponds are used as landscape ponds; in addition, for the weir dam which does not overflow in the dry season, the middle part of the weir dam is provided with an ecological flow discharge hole which is also used as a fish passing hole. The scheme solves the problems of dam crossing of migratory organisms such as fishes and the like and local cutoff of the downstream of the weir dam, is favorable for protecting the biological diversity of rivers, improves the landscape effects of the flat surface and the vertical surface and the overall landscape level of the weir dam, ensures that the weir dam has the functions of convenience for people and hydrophilicity, and has better social, economic and comprehensive benefits.
However, the above prior art schemes do not consider the problem of safe flood discharge in flood season, cannot well control the water level of the lake to rise, are difficult to avoid flooding or scouring of both banks by water flow in flood season, and also fail to consider traffic. Therefore, there is a need for improvement thereof.
Disclosure of Invention
The invention aims to provide a novel urban landscape lake overflow weir structure which is novel in structure, attractive in appearance and capable of meeting the requirement of flood safety drainage in flood season.
The technical scheme of the invention is as follows:
the invention provides a novel urban landscape lake overflow weir structure which comprises the following components in parts by weight: the whole weir body on the plane is of a perfect circular structure, the upstream side is 240 degrees and is provided with an overflow weir, the downstream side is 120 degrees and is provided with a pedestrian bridge, and the pedestrian bridge is connected with the two bank lakes. The height of the bridge deck of the pedestrian overpass is higher than that of the weir crest, and the height difference needs to be larger than the weir crest water head under the design flood.
The overflow weir is a gravity dam, and a protection flat is connected behind the weir and plays a role in protecting the riverbed from being washed away. Considering from construction convenience and structural stress, the whole weir body is provided with two structural seams which are intersected horizontally and vertically.
The circular urban landscape lake weir body structure provided by the invention has the advantages that the 240-degree upstream of the circle is the overflow weir, the arc length of the front edge of the weir crest is 2.6 times of the straight length of two end points of the weir crest, the circular urban landscape lake weir body structure is a labyrinth weir structure, larger flood can be discharged under the conditions of the same overflow width and the same water head, and the functions of controlling the water level of the lake to rise and avoiding flooding or scouring on two banks are achieved. The whole weir body structure gives consideration to flood discharge and traffic functions, overlooks from a distance just like blocking lake water in a round of a moon, and is attractive in appearance, simple and easy to construct and convenient to manage. Is suitable for being applied to urban landscape lake bodies.
Drawings
FIG. 1 is a plan view of the novel landscape weir construction of the present invention;
fig. 2 is a sectional view taken along line a-a in fig. 1.
Description of reference numerals: 1-overflow weir, 2-pedestrian overpass, 3-lake bank, 4-weir crest, 5-apron and 6-structural joint.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1, fig. 1 is a schematic plan view of a weir of the present invention. As can be seen from the figure, the whole weir body on the plane is in a perfect circular structure, the upper part in the figure is an upstream side, the lower part is a downstream side, the upstream side is 240 degrees and is provided with an overflow weir 1, the downstream side is provided with a pedestrian bridge 2, and the pedestrian bridge 2 is connected with the lakes 3 on both sides; the elevation of the bridge deck of the pedestrian overpass 2 is higher than the elevation of the weir crest 4, and the elevation difference is larger than the weir crest 4 water head under the design flood. The whole weir body is provided with two structural seams 6 which are intersected horizontally and vertically. The arc length of the front edge of the weir crest 4 of the overflow weir 1 is 2.6 times of the straight length of the two end points, and the overflow weir is of a labyrinth weir structure.
As can be seen from the cross-sectional view shown in fig. 2, the overflow weir 1 is a gravity dam structure, and a apron 5 is connected behind the weir.
The weir body structure of the invention is successfully applied to the engineering of the crouchong lake in the new area of Guizhou province, Gui' an. The crouching lake is located in the core area of the new area of Guian-the ecological New City of Guian, the lake weir plane adopts a perfect circular structure, the diameter of the excircle is 39m, 240 degrees of the upstream side is an overflow weir 1, and 120 degrees of the downstream side is a pedestrian overpass 2. The arc length of the front edge of the weir crest 4 of the overflow weir 1 is 81.64m, the straight line length of the two end points is 31.4m, the height of the pedestrian overpass 2 is 2m higher than the weir crest 4, and the maximum lower discharge is 137m3/s。
The application results show that: after the horizontal dragon lake in the Guian New district is built, the weir body structure and the surrounding landscape are well integrated, and the weir is novel in shape, attractive in appearance, simple and easy to construct, convenient to manage and good in popularization prospect.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (4)
1. The utility model provides a circular city view lake overflow weir structure which characterized in that: the whole weir body on the plane is of a perfect circular structure, the overflow weir (1) is arranged at 240 degrees on the upstream side, the pedestrian overpass (2) is arranged at 120 degrees on the downstream side, and the pedestrian overpass (2) is connected with the two bank lakeways (3); the elevation of the bridge deck of the pedestrian overpass (2) is higher than that of the weir crest (4), and the elevation difference is larger than the water head of the weir crest (4) under the design flood.
2. The circular urban landscape lake weir structure of claim 1, wherein: the overflow weir (1) is of a gravity dam structure, and a protective flat (5) is connected behind the weir.
3. The circular urban landscape lake weir structure of claim 1, wherein: the whole weir body is provided with two structural seams (6) which are intersected horizontally and vertically.
4. The circular urban landscape lake weir structure of claim 1, wherein: the arc length of the front edge of the weir top (4) of the overflow weir (1) is 2.6 times of the straight length of the two end points, and the overflow weir is of a labyrinth weir structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910987343.4A CN110805004A (en) | 2019-10-17 | 2019-10-17 | Circular city view lake overflow weir structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910987343.4A CN110805004A (en) | 2019-10-17 | 2019-10-17 | Circular city view lake overflow weir structure |
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| Publication Number | Publication Date |
|---|---|
| CN110805004A true CN110805004A (en) | 2020-02-18 |
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| CN201910987343.4A Pending CN110805004A (en) | 2019-10-17 | 2019-10-17 | Circular city view lake overflow weir structure |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3421326A (en) * | 1963-03-27 | 1969-01-14 | Vidal Henri C | Constructional works |
| CA2300311A1 (en) * | 2000-02-25 | 2000-10-25 | Ralph H. Hoyeck | Reversible flexible wall dams (rfwd) |
| CN102587330A (en) * | 2012-02-09 | 2012-07-18 | 中国水电顾问集团西北勘测设计研究院 | Arc-shaped labyrinth weir with downstream dropping slope chute |
| CN109468998A (en) * | 2018-12-03 | 2019-03-15 | 中国电建集团贵阳勘测设计研究院有限公司 | A glass stand structure for sightseeing |
| CN211006580U (en) * | 2019-10-17 | 2020-07-14 | 中国电建集团贵阳勘测设计研究院有限公司 | Circular city view lake overflow weir structure |
-
2019
- 2019-10-17 CN CN201910987343.4A patent/CN110805004A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3421326A (en) * | 1963-03-27 | 1969-01-14 | Vidal Henri C | Constructional works |
| CA2300311A1 (en) * | 2000-02-25 | 2000-10-25 | Ralph H. Hoyeck | Reversible flexible wall dams (rfwd) |
| CN102587330A (en) * | 2012-02-09 | 2012-07-18 | 中国水电顾问集团西北勘测设计研究院 | Arc-shaped labyrinth weir with downstream dropping slope chute |
| CN109468998A (en) * | 2018-12-03 | 2019-03-15 | 中国电建集团贵阳勘测设计研究院有限公司 | A glass stand structure for sightseeing |
| CN211006580U (en) * | 2019-10-17 | 2020-07-14 | 中国电建集团贵阳勘测设计研究院有限公司 | Circular city view lake overflow weir structure |
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