CN204589928U - The gravity dam structure that a kind of four grating roller compacted concretes are connected with graduation three roller compacted concrete - Google Patents
The gravity dam structure that a kind of four grating roller compacted concretes are connected with graduation three roller compacted concrete Download PDFInfo
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- CN204589928U CN204589928U CN201420833324.9U CN201420833324U CN204589928U CN 204589928 U CN204589928 U CN 204589928U CN 201420833324 U CN201420833324 U CN 201420833324U CN 204589928 U CN204589928 U CN 204589928U
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Abstract
The utility model discloses the gravity dam structure that a kind of four grating roller compacted concretes are connected with graduation three roller compacted concrete, comprise four grating RCCD (Roller Compacted Concrete Dam) bodies of inside and be positioned at the graduation three roller compacted concrete impervious barrier of upstream upstream face, described graduation three roller compacted concrete impervious barrier is coordinated to be connected transition by cross-border rolling with four grating RCCD (Roller Compacted Concrete Dam) bodies, and is provided with vertical drainage pipe and horizontal drain pipe in four grating RCCD (Roller Compacted Concrete Dam) bodies.The utility model is taked graduation three roller compacted concrete impervious barrier to be connected transition with four grating roller compacted concretes and is solved dam deformation coordination problem, because inside adopts four grating roller compacted concretes, and roll thickness and be increased to 50cm by the 30cm of routine, substantially increase construction speed, reduce cement consumption, reduce temperature control difficulty; Overcome simultaneously and adopt the excessive deficiency with deformation of the stiffness variation of graduation two antiseepage and inner four grating roller-compacting concrete material binding sites.
Description
Technical field
The utility model belongs to gravity dam technical field, specifically relates to the gravity dam structure that a kind of four grating roller compacted concretes are connected with graduation three roller compacted concrete.
Background technology
At present, the dam construction technique of domestic and international roller compacted concrete maturation is generally adopt RCC with two graded aggregate antiseepage, and inner concrete in mass is graduation three roller compacted concrete, and part engineering adopts tunneling boring graduation three roller compacted concrete.Such as, publication number is that the Chinese patent of CN 202945579 U discloses a kind of tunneling boring three-graded concrete dam structure, and this structure is made up of graduation three roller compacted concrete dam body, abnormal concrete layer and drain pipe system; The position that the upstream and downstream inconvenience that abnormal concrete layer is arranged on roller compacted concrete dam body rolls, drain pipe system is arranged on the position of inside near upstream face of roller compacted concrete dam body.Existing RCCD (Roller Compacted Concrete Dam) section arranges and compares, and arranges although this technical scheme eliminates graduation two antiseepage roller compacted concrete, solves the conveying of multiple grading concrete and changes the construction restriction brought.But because dam adopts tunneling boring graduation three roller compacted concrete, therefore cement consumption is more, and graduation two impervious concrete gel material content reaches 170 ~ 180kg/m
3, dam body graduation three roller compacted concrete gel material content reaches 150 ~ 160kg/m
3, because cement consumption is comparatively large, the dam body heat of hydration and dam body temperature rise higher, temperature controlled anticracking difficulty is relatively large, and meanwhile, graduation three roller compacted concrete maximum diameter of aggrogate is 8cm, and thickness 30cm is rolled in face, storehouse, and construction speed is relatively slow.Therefore existing graduation two and graduation three roller compacted concrete and tunneling boring three-graded concrete dam structure desirable not enough, await perfect further.
Utility model content
The utility model is for the problem that existing Compacted Concrete Gravity Dam Section partitioned organization cement consumption is more and temperature control difficulty is larger, the gravity dam structure that a kind of four grating roller compacted concretes are connected with graduation three roller compacted concrete is provided, thus efficiently solves the larger problem of the stiffness transition of dam zoning material and compatibility of deformation problem and cement consumption more temperature control difficulty.
The utility model is achieved by following technical solution.
The gravity dam structure that a kind of four grating roller compacted concretes are connected with graduation three roller compacted concrete, comprise four grating RCCD (Roller Compacted Concrete Dam) bodies of inside and be positioned at the graduation three roller compacted concrete impervious barrier of upstream upstream face, described graduation three roller compacted concrete impervious barrier is coordinated to be connected transition by cross-border rolling with four grating RCCD (Roller Compacted Concrete Dam) bodies, and is provided with vertical drainage pipe and horizontal drain pipe in four grating RCCD (Roller Compacted Concrete Dam) bodies.
Described four grating RCCD (Roller Compacted Concrete Dam) bodies adopt the aggregate of four kinds of continuous gradings to stir concrete processed.
The inconvenience position of rolling, graduation three roller compacted concrete impervious barrier upstream of described upstream upstream face adopts and adds underflow and to vibrate formation structure.
Described vertical drainage pipe and horizontal drain pipe are interconnected and form drainage network structure.
The arrangement pitch of described vertical drainage pipe and horizontal drain pipe is 3 ~ 4m.
The thickness that rolls of described four grating RCCD (Roller Compacted Concrete Dam) bodies is 50cm.
The maximum diameter of aggrogate of described four kinds of continuous gradings is 12 ~ 15cm.
The beneficial effects of the utility model are:
Compared with existing Compacted Concrete Gravity Dam Section structure, have and roll thickness increase and greatly improve its construction speed, cement consumption is few, temperature control difficulty is low advantage, overcome and adopt the excessive deficiency with deformation of the stiffness variation of graduation two antiseepage and inner four grating roller-compacting concrete material binding sites, there is good economy, the breakthrough of dam construction technique, can in roller compacted concrete Dam technical field of structures wide popularization and application.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1-graduation three roller compacted concrete impervious barrier, 2-tetra-grating RCCD (Roller Compacted Concrete Dam) body, 3-vertical drainage pipe, 4-horizontal drain pipe.
Detailed description of the invention
The technical solution of the utility model is further described below in conjunction with accompanying drawing, but described in claimed scope is not limited to.
As shown in Figure 1, the gravity dam structure that a kind of four grating roller compacted concretes described in the utility model are connected with graduation three roller compacted concrete, comprise four grating RCCD (Roller Compacted Concrete Dam) bodies 2 of graduation three roller compacted concrete the impervious barrier 1 and inside being positioned at upstream upstream face, described graduation three roller compacted concrete impervious barrier 1 is coordinated to be connected transition with four grating RCCD (Roller Compacted Concrete Dam) bodies 2, and is provided with gutter in four grating RCCD (Roller Compacted Concrete Dam) bodies 2.The technical program forms gravity dam structure by adopting graduation three roller compacted concrete impervious barrier 1 to be connected transition with four grating RCCD (Roller Compacted Concrete Dam) body 2 effective coordination, overcome the deficiency adopting the excessive and deformation of the stiffness variation of graduation two antiseepage and inner four grating roller-compacting concrete material binding sites, four grating roller compacted concretes every side's concrete gel material consumption is 130 ~ 140kg simultaneously, every side's cement consumption is few about the 20kg of graduation three roller compacted concrete comparatively, thermal insulation warming reduces about 2 degree, overcome the deficiency adopting tunneling boring graduation three roller compacted concrete still to need to take stricter temperature control measures, cost often just saves 30 ~ 40 yuan, there is good economy.
Described four grating RCCD (Roller Compacted Concrete Dam) bodies 2 adopt the aggregate of four kinds of continuous gradings to stir concrete processed; And the maximum diameter of aggrogate of four kinds of continuous gradings is 12 ~ 15cm.
The inconvenience position of rolling, graduation three roller compacted concrete impervious barrier 1 upstream of described upstream upstream face is adopt to add underflow and to vibrate the structure formed.To strengthen the anti-permeability performance of graduation three roller compacted concrete impervious barrier 1.
Described vertical drainage pipe 3 and horizontal drain pipe 4 are interconnected and form drainage network structure, can effectively reduce the osmotic pressure of four grating dam bodys; The arrangement pitch of described vertical drainage pipe 3 and horizontal drain pipe 4 is 3 ~ 4m.
The thickness that rolls of described four grating RCCD (Roller Compacted Concrete Dam) bodies 2 is 50cm.Roll compared with thickness 30cm with traditional, greatly improve its construction speed, and can reduce cement consumption, reduce temperature control difficulty, having good economy, is the breakthrough of dam construction technique.
Through showing at the investigation and application of husky a small bay in a river dam four grating roller compacted concrete, the every side of the gel material content of four grating roller compacted concretes of the present utility model is adopted to reduce about 20kg/m than three-graded concrete
3, the dam concrete heat of hydration and dam body temperature rise more than 2 DEG C can be reduced, greatly simplify temperature control measures; And four grating roller compacted concrete maximum diameter of aggrogate reach 12 ~ 15cm, thickness is rolled at more than 50cm in face, storehouse, substantially increase construction efficiency, often can investment reduction about 20 ~ 30 yuan, the difficult problems such as its anti-Segregation are also solved, its first successful Application be breakthrough and the development of grinding concrete dam technology.
Claims (7)
1. the gravity dam structure that is connected with graduation three roller compacted concrete of a grating roller compacted concrete, it is characterized in that: comprise four grating RCCD (Roller Compacted Concrete Dam) bodies (2) of inside and be positioned at the graduation three roller compacted concrete impervious barrier (1) of upstream upstream face, described graduation three roller compacted concrete impervious barrier (1) coordinates to be connected transition by cross-border rolling with four grating RCCD (Roller Compacted Concrete Dam) bodies (2), and is provided with vertical drainage pipe (3) and horizontal drain pipe (4) in four grating RCCD (Roller Compacted Concrete Dam) bodies (2).
2. the gravity dam structure that is connected with graduation three roller compacted concrete of a kind of four grating roller compacted concretes according to claim 1, is characterized in that: described four grating RCCD (Roller Compacted Concrete Dam) bodies (2) adopt the aggregate of four kinds of continuous gradings to stir concrete processed.
3. the gravity dam structure that is connected with graduation three roller compacted concrete of a kind of four grating roller compacted concretes according to claim 1, is characterized in that: the position that graduation three roller compacted concrete impervious barrier (1) the upstream inconvenience of described upstream upstream face rolls adopts and adds underflow and to vibrate formation structure.
4. the gravity dam structure that is connected with graduation three roller compacted concrete of a kind of four grating roller compacted concretes according to claim 1, is characterized in that: described vertical drainage pipe (3) and horizontal drain pipe (4) are interconnected and form drainage network structure.
5. the gravity dam structure that is connected with graduation three roller compacted concrete of a kind of four grating roller compacted concretes according to claim 4, is characterized in that: the arrangement pitch of described vertical drainage pipe (3) and horizontal drain pipe (4) is 3 ~ 4m.
6. the gravity dam structure that is connected with graduation three roller compacted concrete of a kind of four grating roller compacted concretes according to claim 1, is characterized in that: the thickness that rolls of described four grating RCCD (Roller Compacted Concrete Dam) bodies (2) is 50cm.
7. according to the gravity dam structure that claim 2 grating roller compacted concrete is connected with graduation three roller compacted concrete, it is characterized in that: the maximum diameter of aggrogate of described four kinds of continuous gradings is 12 ~ 15cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420833324.9U CN204589928U (en) | 2014-12-24 | 2014-12-24 | The gravity dam structure that a kind of four grating roller compacted concretes are connected with graduation three roller compacted concrete |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420833324.9U CN204589928U (en) | 2014-12-24 | 2014-12-24 | The gravity dam structure that a kind of four grating roller compacted concretes are connected with graduation three roller compacted concrete |
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| CN204589928U true CN204589928U (en) | 2015-08-26 |
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| CN201420833324.9U Active CN204589928U (en) | 2014-12-24 | 2014-12-24 | The gravity dam structure that a kind of four grating roller compacted concretes are connected with graduation three roller compacted concrete |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106517916A (en) * | 2016-11-17 | 2017-03-22 | 张廉 | Four-graded roller compacted concrete applicable to water conservancy and hydropower engineering and preparation method |
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2014
- 2014-12-24 CN CN201420833324.9U patent/CN204589928U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106517916A (en) * | 2016-11-17 | 2017-03-22 | 张廉 | Four-graded roller compacted concrete applicable to water conservancy and hydropower engineering and preparation method |
| CN106517916B (en) * | 2016-11-17 | 2018-12-11 | 张廉 | A kind of four gradation grinding coagulations soil being applicable in water power hydraulic engineering and preparation method |
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