CN203741792U - Concrete tooth groove stilling basin - Google Patents

Concrete tooth groove stilling basin Download PDF

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Publication number
CN203741792U
CN203741792U CN201420013581.8U CN201420013581U CN203741792U CN 203741792 U CN203741792 U CN 203741792U CN 201420013581 U CN201420013581 U CN 201420013581U CN 203741792 U CN203741792 U CN 203741792U
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China
Prior art keywords
concrete
bank slope
tooth groove
steel bar
construction
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Active
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CN201420013581.8U
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Chinese (zh)
Inventor
张文毅
王洪军
翟张宏
张庆
王晓峰
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China Hydropower Consulting Group Guiyang Survey and Design Institute
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China Hydropower Consulting Group Guiyang Survey and Design Institute
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Priority to CN201420013581.8U priority Critical patent/CN203741792U/en
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Abstract

The utility model discloses a concrete tooth groove stilling basin. The stilling basin comprises base plate structural concrete arranged at the front end of a bank slope. Tooth groove structural concrete is arranged at the upstream portion of the base plate structural concrete, and backfill concrete is arranged at the downstream portion of the base plate structural concrete. A bank slope covering layer is arranged on the top of the bank slope. A steel bar gabion is arranged on the surface of the bank slope covering layer. A steel bar mesh is perpendicularly arranged between the base plate structural concrete and the backfill concrete. A construction method comprises the steps of tooth groove excavation, structural steel bar binding, steel bar mesh positioning, first-stage pouring, formwork supporting, second-stage pouring, steel bar gabion laying, formwork removal and shaping. According to the concrete tooth groove stilling basin, the construction progress is accelerated, the construction procedure is simplified, project investment is reduced, and the concrete tooth groove stilling basin is suitable for being widely popularized and used.

Description

A kind of concrete teeth groove absorption basin
Technical field
The utility model relates to electrical engineering technical field of construction, is specifically related to a kind of concrete teeth groove absorption basin.
Background technology
Absorption basin as the important component part of hydraulic structure in hydroelectric project, there is dissipation flow energy, prevent bed scour, the function of protection downstream building safety, its structure often forms by leading wall, pond base plate, tail bank and downstream apron.Absorption basin base plate and tail bank connect as one conventionally, current energy dissipating completes in this section substantially, and the suffered water flow impact pressure of absorption basin base plate is very large, in order to increase stability, conventionally absorption basin base arrangement arranges upstream teeth groove and downstream teeth groove, makes in embedding riverbed, base plate two ends basement rock.In order to save Master Cost, conventionally the space beyond tooth slot structure concrete is adopted to the concrete backfill of low-intensity grade, structural concrete strength is generally more than C25, fill concrete intensity is generally C15 or following, and be provided with sealing between structural concrete and fill concrete, block the water stream channel between tooth slot structure concrete and fill concrete with this.The tooth excavation degree of depth is depending on engineering concrete condition, and it is following that the degree of depth is generally 0.5m~3.5m(absorption basin base plate bedrock surface elevation), in order to reduce excavation and later stage concrete backfill engineering quantity, excavated section is conventionally comparatively narrow.
Tradition absorption basin teeth groove concreting program is: build → formwork erection → tooth slot structure of excavation of foundation pit → foundation ditch cleaning → formwork erection → tooth slot structure concreting → form removal → foundation ditch cleaning → fill concrete concreting → form removal → fill concrete builds → until teeth groove concreting completes, work progress is as shown in Figure 1 and Figure 2.Now taking 1 grade of Hydropower Project of the Ma Maya of Guizhou Province as example, the about 3.0m of the actual cutting depth of absorption basin downstream teeth groove, about 0.8m is wide in bottom, and both sides side slope is pressed 1:03 excavation, and excavated section is narrower.Teeth groove concrete is divided into first phase structural concrete and the second stage of fill concrete, is provided with horizontal sealing equally between first phase structural concrete and the second stage of fill concrete.Whole excavation bottom surface only remains the supporting of 0.3m for first phase structural concrete template after removing the wide shared 0.5m of tooth slot structure concrete base, after template support completes, first carrying out first phase structural concrete builds, after reaching certain length of time, first phase structural concrete carries out form removal, and after tooth excavation bottom is cleared up again, can carry out the second stage of fill concrete and build, also should consider during this time the construction of sealing.In the time carrying out the cleaning of secondary gullet base, because tooth excavation section is narrower, under being difficult to, constructor carries out rock ballast and garbage-cleaning to tooth excavation bottom.Secondly, tooth slot structure concrete wall surface is higher, and in order to reduce template construct, concreting considers to divide two storehouses to carry out, need during this time to set up installation that scaffold carries out template with fixing, complete and carry out after bottom is cleared up building carrying out two storehouse fill concretes until the second chamber structure concreting.
By traditional absorption basin teeth groove concreting method is analyzed and can be drawn: traditional absorption basin teeth groove concreting method construction duration length, complex procedures, consumed a large amount of human and material resources, increased construction investment, and construction quality is difficult to ensure.
Utility model content
The purpose of this utility model is: a kind of concrete teeth groove absorption basin is provided, to solve the existing construction of traditional absorption basin duration length, complex procedures, to have consumed a large amount of human and material resources, increased construction investment, and construction quality is difficult to the problem ensureing.
The purpose of this utility model is achieved by following technical solution:
A kind of concrete teeth groove absorption basin, comprise the base arrangement concrete that is arranged on bank slope front end, base arrangement concrete upstream is provided with tooth slot structure concrete, downstream is provided with fill concrete, bank slope top is provided with bank slope covering layer, bank slope cover surface is provided with reinforced gabion, between described base arrangement concrete and fill concrete, is provided with vertically arranged steel mesh reinforcement.
The reinforcing bar that described steel mesh reinforcement is 4-8mm by diameter is welded, rebar spacing 80-120mm.
The height of described steel mesh reinforcement is identical with fill concrete height.
The beneficial effects of the utility model are:
Compared with prior art, the concrete teeth groove absorption basin that the utility model provides, use steel mesh reinforcement Substitute For Partial template, absorption basin tooth slot structure concrete and fill concrete can be built the same period, in meeting and having designed intention, cancelled template installation, removed operation, laterally sealing construction, avoided the native rock ballast cleaning in foundation ditch bottom difficulty; Finally accelerate construction speed, simplified construction sequence, saved construction investment.
Brief description of the drawings
Fig. 1, Fig. 2 are the structural representations of traditional absorption basin;
Fig. 3 is structural representation of the present utility model;
In figure: 1-base arrangement concrete, 2-tooth slot structure concrete, 3-fill concrete, the horizontal sealing of 4-, 5-reinforced gabion, 6-bank slope covering layer, 7-tooth excavation sideline, 8-template, 9-shuttering supporting, 10-steel mesh reinforcement.
Detailed description of the invention
Below in conjunction with drawings and Examples, the technical solution of the utility model is described further, but described in desired protection domain is not limited to;
As shown in Figure 1, 2, traditional absorption basin teeth groove concreting program is: build → formwork erection → tooth slot structure of excavation of foundation pit → foundation ditch cleaning → formwork erection → tooth slot structure concreting → form removal → foundation ditch cleaning → fill concrete concreting → form removal → fill concrete builds → until teeth groove concreting complete.
As shown in Figure 3, the concrete teeth groove absorption basin that the utility model provides, comprise the base arrangement concrete 1 that is arranged on bank slope front end, base arrangement concrete 2 upstreams are provided with tooth slot structure concrete 2, downstream is provided with fill concrete 3, bank slope top is provided with bank slope covering layer 6, bank slope covering layer 6 surfaces are provided with reinforced gabion 5, are provided with vertically arranged steel mesh reinforcement 10 between described base arrangement concrete 1 and fill concrete 3.
The reinforcing bar that described steel mesh reinforcement 10 is 4-8mm by diameter is welded, rebar spacing 80-120mm.In the time of cast, tooth slot structure concrete 1 interpenetrates by the hole on steel mesh reinforcement 10 with fill concrete 3, makes two kinds of concrete microcosmic connect macroscopic view again and separates, and has finally cancelled the construction of sealing 4, has saved construction investment when having simplified construction sequence.
While cast at the same time in order to meet two kinds of concrete, liquid level is identical, and the height of described steel mesh reinforcement 10 is highly identical with fill concrete 3.
Embodiment: the work progress of above-mentioned concrete teeth groove absorption basin is:
Excavate respectively the construction groove of base arrangement concrete 1, tooth slot structure concrete 2 and fill concrete 3 at bank slope front end; Construction groove edge at base arrangement concrete 1, tooth slot structure concrete 2 and fill concrete 3 goes out structural edge with reinforcing bar binding; Steel mesh reinforcement 10 is vertically set on to base arrangement concrete 1 and fill concrete 3 are constructed between groove and fixing; To the structural concrete of pouring into a mould intensity > C25 in base arrangement concrete 1 and tooth slot structure concrete 2 are constructed groove, to the fill concrete of pouring into a mould intensity≤C15 in the construction groove of fill concrete 3, two kinds of concrete are poured into a mould simultaneously and teeming rate equates to ensure that two kinds of concrete liquid level in the time of cast flushes; After casting complete, be that liquid level is when identical with steel mesh reinforcement 10; Template 8 is arranged on to fill concrete 3 upper ends, and with shuttering supporting 9 supportings; To the structural concrete of pouring into a mould intensity > C25 in template, make to build rear floor structure concrete 1 and be highly greater than fill concrete 3; Lay bank slope covering layer 6 on bank slope surface, and lay reinforced gabion 5 on bank slope covering layer 6 surfaces; After Concrete in Natural used is air-dry, the shuttering supporting 9 at template 8 edges is removed one by one, then template 8 is unloaded, completed the construction of whole engineering.
It is more than an example of the utility model application steel mesh reinforcement 10 Substitute For Partial templates 8; the utility model also has other embodiment; as adopted steel sheet or veneer with hole all can reach effect same, adopt the technical scheme that is equal to replacement, all fall into protection domain of the present utility model.

Claims (3)

1. a concrete teeth groove absorption basin, comprise the base arrangement concrete (1) that is arranged on bank slope front end, base arrangement concrete (1) upstream is provided with tooth slot structure concrete (2), downstream is provided with fill concrete (3), bank slope top is provided with bank slope covering layer (6), bank slope covering layer (6) surface is provided with reinforced gabion (5), it is characterized in that: between described base arrangement concrete (1) and fill concrete (3), be provided with vertically arranged steel mesh reinforcement (10).
2. concrete teeth groove absorption basin according to claim 1, is characterized in that: the reinforcing bar that described steel mesh reinforcement (10) is 4-8mm by diameter is welded, rebar spacing 80-120mm.
3. concrete teeth groove absorption basin according to claim 1, is characterized in that: the height of described steel mesh reinforcement (10) is highly identical with fill concrete (3).
CN201420013581.8U 2014-01-09 2014-01-09 Concrete tooth groove stilling basin Active CN203741792U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420013581.8U CN203741792U (en) 2014-01-09 2014-01-09 Concrete tooth groove stilling basin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420013581.8U CN203741792U (en) 2014-01-09 2014-01-09 Concrete tooth groove stilling basin

Publications (1)

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CN203741792U true CN203741792U (en) 2014-07-30

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CN201420013581.8U Active CN203741792U (en) 2014-01-09 2014-01-09 Concrete tooth groove stilling basin

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103741651A (en) * 2014-01-09 2014-04-23 中国水电顾问集团贵阳勘测设计研究院有限公司 Concrete tooth groove stilling pool and construction method thereof
CN105297682A (en) * 2015-11-11 2016-02-03 中国水利水电第十四工程局有限公司 Force eliminating drainage facility

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103741651A (en) * 2014-01-09 2014-04-23 中国水电顾问集团贵阳勘测设计研究院有限公司 Concrete tooth groove stilling pool and construction method thereof
CN103741651B (en) * 2014-01-09 2016-08-17 中国水电顾问集团贵阳勘测设计研究院有限公司 A kind of concrete teeth groove stiling basin and construction method thereof
CN105297682A (en) * 2015-11-11 2016-02-03 中国水利水电第十四工程局有限公司 Force eliminating drainage facility

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