CN113235525A

CN113235525A - Concrete arch dam

Info

Publication number: CN113235525A
Application number: CN202110595764.XA
Authority: CN
Inventors: 向建; 韩栋; 朱兆同; 王帅帅
Original assignee: Shandong Water Conservancy Group Co ltd
Current assignee: Shandong Water Conservancy Group Co ltd
Priority date: 2021-05-29
Filing date: 2021-05-29
Publication date: 2021-08-10
Anticipated expiration: 2041-05-29
Also published as: CN113235525B

Abstract

The utility model belongs to the technical field of the technique of arched dam construction and specifically relates to a concrete arched dam is related to, it includes the dam body, offers the sluicing mesopore for flood discharge in the dam body, prefabricated template component has been preset in the lateral wall in sluicing mesopore, and prefabricated template component includes the prefabricated panel that is used for supporting the concrete and the back truss subassembly that is used for supporting the prefabricated panel, back truss subassembly and prefabricated panel fixed connection, and the prefabricated panel is located sluicing mesopore outside, and the top of prefabricated panel is to keeping away from the direction slope in sluicing mesopore, still presets the fine setting subassembly that is used for adjusting the prefabricated panel inclination in the lateral wall in sluicing mesopore, and this application can shorten the erection time of the template that is used for pouring concrete flange all around in the sluicing mesopore discharge opening, alleviates and the contradiction between the dam short intermittence period with big concrete.

Description

Concrete arch dam

Technical Field

The application relates to the technical field of arch dam construction, in particular to a concrete arch dam.

Background

An arch dam is a water retaining dam built in a canyon and is made into a horizontal arch shape, a convex edge faces upstream, and two ends of the convex edge are tightly attached to the canyon wall. The arch dam is a water-retaining building which is curved upstream on a plane and can transmit a part of horizontal load to two banks, and is a space shell structure.

The arch dam plays an important role as a core part of a hydropower station. When the water level reaches the flood discharge height, the arch dam is opened to discharge water, the water at the upstream is discharged to the downstream of the river channel through the water discharge middle hole in the middle of the dam body, and the flowing water pushes the water turbine to operate and generate power. In order to control the direction of the discharged water flow, concrete flanges are poured around the discharge port of the discharge mesopore, so that the discharged water flow can smoothly flow into the plunge pool to dissipate energy and gradually flow to the downstream.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: the construction of the large flood discharge and drainage middle hole of the arch dam is complex in structure, so that the installation period of a template for pouring concrete flanges around the drainage middle hole discharge port is long, and the contradiction between the installation period and the short intermission period of dam concrete is prominent.

Disclosure of Invention

In order to shorten the installation period of a template for pouring concrete flanges around a drainage center hole drainage port and relieve the contradiction between the template and a short intermission period of dam concrete, the application provides a concrete arch dam.

The application provides a concrete arch dam adopts following technical scheme: the utility model provides a concrete arch dam, includes the dam body, offers the sluicing mesopore that is used for the flood discharge in the dam body, prefabricated template component has been preset in the lateral wall in sluicing mesopore, and prefabricated template component includes the prefabricated panel that is used for supporting the concrete and the back truss subassembly that is used for supporting the prefabricated panel, back truss subassembly and prefabricated panel fixed connection, and the prefabricated panel is located sluicing mesopore outside, and the top of prefabricated panel is to keeping away from the direction slope in sluicing mesopore, still presets the fine setting subassembly that is used for adjusting the prefabricated panel inclination in the lateral wall in sluicing mesopore.

Through adopting above-mentioned technical scheme, back truss subassembly carries out fixed stay to the precast panel, guarantees when using the lateral wall in concrete placement sluicing mesopore, and the precast panel can remain stable, makes the concrete accurately according to predetermined shape shaping. After the back truss assembly is built, the inclination angle of the back truss assembly can be adjusted by adjusting the length of the fine adjustment assembly so as to adjust the inclination angle of the prefabricated panel, and the prefabricated panel can accurately reach the designed position. And pouring and burying the fine adjustment assembly and the back truss assembly by using concrete, so that the fine adjustment assembly and the back truss assembly form a part of the drainage hollow side wall. The prefabricated formwork member has short installation period, and can relieve the contradiction between the prefabricated formwork member and the dam concrete in short intermittent period.

Optionally, the back truss assembly comprises a main support column, two prefabricated oblique beams and two prefabricated trusses, the two prefabricated trusses are located between the main support column and the prefabricated panel, two ends of each prefabricated truss are fixedly connected with the main support column and the prefabricated panel respectively, the main support column, the two prefabricated trusses and the prefabricated panel jointly form a quadrangle, two ends of each prefabricated oblique beam are fixedly connected with the main support column and the prefabricated panel respectively, a fixing piece is pre-embedded in a storage face of the drainage hole of the dam body, and the bottom end of the main support column is hinged to the fixing piece.

By adopting the technical scheme, the main supporting column, the two prefabricated trusses, the two prefabricated oblique beams and the prefabricated panel form a very stable geometric shape. The fixing piece is used for fixedly supporting the main supporting column, the main supporting column is used for fixedly supporting the prefabricated panel through two prefabricated trusses and two prefabricated oblique beams, and the back truss assembly can guarantee that the prefabricated panel can support the concrete very stably during concrete solidification. When the inclination of the prefabricated panel is adjusted, the fine adjustment assembly pulls the main supporting column to rotate by a small angle along the fixing piece, and then the inclination of the prefabricated panel is adjusted quickly and conveniently.

Optionally, the precast oblique beams are multiple and parallel to each other.

Through adopting above-mentioned technical scheme, set up many prefabricated sloping and can increase the connection stability between main tributary dagger and the prefabricated panel, increase the support body stability of whole back truss subassembly, improve the effect of strutting of prefabricated panel to the concrete.

Optionally, the fixing part includes a connecting portion and a hooking portion, the connecting portion is located in the drain hole, the hooking portion is embedded into the cabin-closing surface of the drain hole, the bottom end of the main support column is hinged to the connecting portion, and the hooking portion is bent and the tail end of the hooking portion extends towards the direction close to the drain hole.

Through adopting above-mentioned technical scheme, set up the hook portion into the bending shape after, the concrete of the receipts storehouse face in the sluicing mesopore can exert reaction force to the hook portion, makes the mounting be located steadily and receive the storehouse face inside, improves the fixed stay stability of mounting to the main tributary dagger.

Optionally, the fine setting subassembly includes basket of flowers bolt and two reinforcing bar braces, the tip of two reinforcing bar braces respectively with basket of flowers bolt's both ends rigid coupling, the pre-buried fixed stock that has in the downthehole receipts storehouse face of sluicing, the tip that basket of flowers bolt was kept away from to one of them reinforcing bar brace is articulated with fixed stock, near the top of another reinforcing bar brace kept away from basket of flowers bolt is articulated with the main tributary support column.

By adopting the technical scheme, the fixed anchor rod fixedly supports one end of the steel bar brace; when adjusting the inclination of prefabricated panel, rotate the turn buckle, two screw rods of turn buckle self can drive two reinforcing bar braces and be close to each other or keep away from, drive whole back truss subassembly and rotate, and whole back truss subassembly drives prefabricated panel and rotates an angle, realizes the convenient inclination of adjusting prefabricated panel fast.

Optionally, the tail end of the fixing anchor rod, which is located in the cabin retracting surface of the drainage middle hole, extends towards the direction close to the inside of the drainage middle hole, so that the fixing anchor rod is bent.

Through adopting above-mentioned technical scheme, fixed stock obtains improving with the interact who receives between the storehouse face inside, improves the stability that fixed stock is located to receive the storehouse face.

Optionally, a reinforcing truss is fixedly connected between the adjacent prefabricated oblique beams, and two ends of the reinforcing truss are fixedly connected with two ends of the two prefabricated oblique beams, which are far away from each other, respectively.

Through adopting above-mentioned technical scheme, consolidate the truss and can link two adjacent prefabricated sloping as an organic whole, improve the stability between two adjacent prefabricated sloping, and then improve the stability of whole back truss subassembly.

Optionally, a cooling water pipe is pre-arranged in the collecting surface of the water drainage middle hole, and cooling liquid is filled in the cooling water pipe.

Through adopting above-mentioned technical scheme, set up condenser tube to the cooling liquid of filling in the condenser tube, guaranteed that each position concrete temperature of mesopore is controlled, reduced the risk of concrete fracture, improved the shaping solidification quality of concrete.

Optionally, the cooling water pipe is continuously bent and extended in a serpentine shape in a reciprocating manner.

Through adopting above-mentioned technical scheme, be snakelike with condenser tube design, can increase condenser tube and receive the area of contact of storehouse face inside concrete, improve the accuse temperature effect to the concrete.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the prefabricated formwork member has short installation period, and can relieve the contradiction between the prefabricated formwork member and the dam concrete in a short intermittent period;

2. the fine adjustment assembly is solidified to realize convenient and quick adjustment of the inclination angle of the prefabricated panel;

3. the reinforced truss can integrate two adjacent prefabricated oblique beams, so that the stability between the two adjacent prefabricated oblique beams is improved, and the stability of the whole back truss assembly is further improved.

Drawings

FIG. 1 is a schematic structural view of a concrete arch dam according to an embodiment of the present application;

FIG. 2 is a sectional view showing a cooling water pipe;

FIG. 3 is an enlarged view of portion A of FIG. 2;

fig. 4 is an exploded view showing the horizontal pole.

Description of reference numerals: 1. a dam body; 11. a drainage mesopore; 111. collecting the flour; 12. overflow holes at the top of the dam; 2. prefabricating a template component; 3. prefabricating a panel; 31. a connecting plate; 4. a back truss assembly; 41. a main support column; 411. a groove; 412. a cross post; 413. mounting grooves; 42. prefabricating a truss; 43. prefabricating an oblique beam; 431. reinforcing the truss; 5. a fine tuning component; 51. bracing steel bars; 52. a turn buckle; 6. a fixing member; 61. a connecting portion; 62. a hooking part; 7. fixing an anchor rod; 71. a containing groove; 8. and cooling the water pipe.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a concrete arch dam, and referring to fig. 1 and 2, the concrete arch dam comprises an arc-shaped dam body 1, two ends of the dam body 1 are fixedly connected with a cliff wall, and a convex surface of the dam body 1 faces to the upstream. A plurality of dam crest overflow holes 12 which are uniformly distributed are arranged near the top of the dam body 1, and the heights of all the dam crest overflow holes 12 are the same. The middle part of the dam body 1 is provided with a plurality of uniformly distributed drainage mesopores 11, and the heights of all the drainage mesopores 11 are the same.

Referring to fig. 1 and 2, a prefabricated formwork member 2 is preset in the side wall of the drainage center hole 11, and the prefabricated formwork member 2 comprises a prefabricated panel 3 and a back truss assembly 4. The prefabricated panel 3 is positioned outside the drainage center hole 11, the top of the prefabricated panel 3 is inclined in a direction away from the drainage center hole 11, and the bottom surface of the prefabricated panel 3 is abutted against the bottom edge of the drainage opening of the drainage center hole 11. The back truss assembly 4 is fixedly connected with the side surface of the prefabricated panel 3 facing the interior of the drainage center hole 11, and the back truss assembly 4 is used for supporting the prefabricated panel 3. The fine adjustment assembly 5 is preset in the side wall of the drainage middle hole 11 at one side of the back truss assembly 4 far away from the prefabricated panel 3, and the fine adjustment assembly 5 is used for adjusting the inclination angle of the prefabricated panel 3.

The back truss assembly 4 fixedly supports the prefabricated panel 3, and ensures that the prefabricated panel 3 can be kept stable when the concrete is used for pouring the side wall of the drainage middle hole 11, so that the concrete is accurately formed according to a preset shape. After the back truss assembly 4 is built, the inclination angle of the back truss assembly 4 can be adjusted by adjusting the length of the fine adjustment assembly 5 so as to adjust the inclination angle of the prefabricated panel 3, and the prefabricated panel 3 can accurately reach the designed position. The fine adjustment component 5 and the back truss component 4 are poured and buried by concrete, so that the fine adjustment component 5 and the back truss component 4 form a part of the drainage hollow side wall. The prefabricated formwork component 2 is short in installation period, and contradiction between the prefabricated formwork component and the short intermittent period of dam concrete can be relieved.

Referring to fig. 1 and 2, the prefabricated panel 3 is integrally formed with three connecting plates 31 at a side facing the inside of the drainage hole 11, and the three connecting plates 31 are respectively located at the bottom, the middle and the top of the prefabricated panel 3.

Referring to fig. 1 and 2, the back truss assembly 4 includes a main support column 41, two precast oblique beams 43, and a precast truss 42. Two prefabricated trusses 42 are located between the main support column 41 and the prefabricated panel 3, two ends of one prefabricated truss 42 are fixedly connected with the bottom end of the main support column 41 and the connecting plate 31 located at the bottom of the prefabricated panel 3 respectively, two ends of the other prefabricated truss 42 are fixedly connected with the top end of the main support column 41 and the connecting plate 31 located at the top of the prefabricated panel 3 respectively, two ends of the prefabricated truss 42 are in threaded connection with bolts, the tail ends of the bolts are in threaded connection with nuts, and the prefabricated truss 42 is fixedly connected with the main support column 41 and the connecting plate 31 through the bolts. The main support column 41, the two prefabricated trusses 42 and the prefabricated panel 3 together form a parallelogram.

Referring to fig. 1 and 2, two prefabricated oblique beams 43 are parallel to each other, two ends of one prefabricated oblique beam 43 are respectively and fixedly connected with the main support column 41 and the connecting plate 31 positioned at the bottom of the prefabricated panel 3, two ends of the other prefabricated oblique beam 43 are respectively and fixedly connected with the main support column 41 and the connecting plate 31 positioned in the middle of the prefabricated panel 3, two ends of the prefabricated oblique beam 43 are in threaded connection with bolts, the tail ends of the bolts are in threaded connection with nuts, and the bolts fixedly connect the prefabricated oblique beam 43 with the main support column 41 and the connecting plate 31. The fixing piece 6 is embedded in the collecting surface 111 of the drainage central hole 11 of the dam body 1, and the bottom end of the main supporting column 41 is hinged with the fixing piece 6.

The main support column 41, the two prefabricated girders 42, the two prefabricated oblique beams 43 and the prefabricated panel 3 constitute a very stable geometry. The fixing piece 6 is used for fixedly supporting the main supporting column 41, the main supporting column 41 is used for fixedly supporting the prefabricated panel 3 through two prefabricated trusses 42 and two prefabricated oblique beams 43, and the back truss assembly 4 can ensure that the prefabricated panel 3 can stably support concrete during the concrete solidification. Two prefabricated sloping 43 can increase the connection stability between main tributary dagger 41 and the prefabricated panel 3, increase the support body stability of whole back truss subassembly 4, improve the effect of strutting of prefabricated panel 3 to the concrete. When the inclination angle of the prefabricated panel 3 is adjusted, the fine adjustment assembly 5 pulls the main supporting column 41 to rotate by a small angle along the fixing piece 6, so that the inclination angle of the prefabricated panel 3 can be quickly and conveniently adjusted.

Referring to fig. 1 and 2, a reinforcing truss 431 is fixedly connected between the two prefabricated oblique beams 43, two ends of the reinforcing truss 431 are respectively close to two ends of the two prefabricated oblique beams 43, which are far away from each other, two ends of the reinforcing truss 431 are both in threaded connection with bolts, the tail ends of the bolts are in threaded connection with nuts, and the reinforcing truss 431 and the prefabricated oblique beams 43 are fixedly connected through the bolts. The reinforcing truss 431 can connect two adjacent prefabricated oblique beams 43 into a whole, so that the stability between the two adjacent prefabricated oblique beams 43 is improved, and the stability of the whole back truss assembly 4 is further improved.

Referring to fig. 1 and 2, the fixing member 6 includes a connecting portion 61 and two sets of hooking portions 62, the connecting portion 61 is located in the drainage middle hole 11, the hooking portions 62 are embedded in the cabin-closing surface 111 of the drainage middle hole 11, the hooking portions 62 are curved, the tail ends of the hooking portions extend towards the direction close to the inside of the drainage middle hole 11, the two sets of hooking portions 62 deviate from each other, and the tops of the two sets of hooking portions 62 and the bottom of the connecting portion 61 are integrally formed together. Mounting groove 413 has been seted up to main support column 41's bottom, and connecting portion 61 is located the mounting groove 413, and main support column 41 and connecting portion 61 run through jointly have the bolt, and the terminal threaded connection of bolt has the nut, and the bolt is articulated main support column 41 with connecting portion 61.

When the hook 62 is formed in a curved shape, the concrete in the housing surface 111 of the drain hole 11 can apply a reaction force to the hook 62, so that the fixing member 6 is stably positioned in the housing surface 111, and the fixing and supporting stability of the fixing member 6 with respect to the main support column 41 is improved.

Referring to fig. 2 and 3, the fine adjustment assembly 5 includes a basket bolt 52 and two steel bar braces 51, and ends of the two steel bar braces 51 are fixedly connected to two ends of the basket bolt 52, respectively. A fixed anchor rod 7 is embedded in the collecting surface 111 of the drainage middle hole 11, and the tail end of the fixed anchor rod 7, which is positioned in the collecting surface 111 of the drainage middle hole 11, extends towards the direction close to the interior of the drainage middle hole 11 to enable the fixed anchor rod 7 to be bent; the top of fixed stock 7 is located sluicing mesopore 11, and storage tank 71 has been seted up on the top of fixed stock 7, and the tip that one of them reinforcing bar brace 51 kept away from basket bolt 52 is located storage tank 71, and this reinforcing bar brace 51 and fixed stock 7 run through jointly has the bolt, and the terminal threaded connection of bolt has the nut, and the bolt is articulated reinforcing bar brace 51 and fixed stock 7.

Referring to fig. 4, a groove 411 is formed in the top of the main support column 41 on the side facing away from the prefabricated panel 3, two inner walls of the groove 411 facing each other are fixedly connected with a horizontal cross column 412, and the cross column 412 penetrates through the end of another steel bar brace 51 far away from the turn buckle 52 and is hinged to the steel bar brace 51.

The fixed anchor rod 7 fixedly supports one end of the steel bar brace 51; when adjusting prefabricated panel 3's inclination, rotate basket of flowers 52, two screws of basket of flowers 52 self can drive two reinforcing bar braces 51 and be close to each other or keep away from, drive whole back truss subassembly 4 and rotate, and whole back truss subassembly 4 drives prefabricated panel 3 and rotates an angle, realizes convenient quick adjustment prefabricated panel 3's inclination. The tail end of the fixed anchor rod 7, which is positioned in the cabin-collecting surface 111 of the drainage middle hole 11, extends towards the direction close to the interior of the drainage middle hole 11, the fixed anchor rod 7 is in a bent shape, the interaction force between the fixed anchor rod 7 and the interior of the cabin-collecting surface 111 is improved, and the stability of the fixed anchor rod 7, which is positioned in the cabin-collecting surface 111, is improved.

Referring to fig. 1 and 2, a cooling water pipe 8 is pre-arranged in the collecting surface 111 of the water drainage middle hole 11, the cooling water pipe 8 is continuously bent and extended in a serpentine shape in a reciprocating manner, and cooling liquid is filled in the cooling water pipe 8. Set up condenser tube 8 to the cooling liquid of filling in condenser tube 8, guaranteed that each position concrete temperature of mesopore is controlled, reduced the risk of concrete fracture, improved the shaping solidification quality of concrete.

The implementation principle of the concrete arch dam of the embodiment of the application is as follows: the back truss assembly 4 fixedly supports the prefabricated panel 3, and ensures that the prefabricated panel 3 can be kept stable when the concrete is used for pouring the side wall of the drainage middle hole 11, so that the concrete is accurately formed according to a preset shape.

After the back truss assembly 4 is built, the turn buckle 52 is rotated, two screws of the turn buckle 52 can drive two steel bar braces 51 to be close to or far away from each other, the whole back truss assembly 4 is driven to rotate, the whole back truss assembly 4 drives the prefabricated panel 3 to rotate by an angle, the inclination angle of the prefabricated panel 3 is conveniently and rapidly adjusted, and the prefabricated panel 3 accurately reaches the design position.

The fine adjustment component 5 and the back truss component 4 are poured and buried by concrete, so that the fine adjustment component 5 and the back truss component 4 form a part of the drainage hollow side wall. The prefabricated formwork component 2 is short in installation period, and contradiction between the prefabricated formwork component and the short intermittent period of dam concrete can be relieved.

Set up condenser tube 8 to the cooling liquid of filling in condenser tube 8, guaranteed that each position concrete temperature of mesopore is controlled, reduced the risk of concrete fracture, improved the shaping solidification quality of concrete.

The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a concrete arch dam, includes dam body (1), offers sluicing mesopore (11) for flood discharge in dam body (1), its characterized in that: prefabricated template component (2) have been preset in the lateral wall of sluicing mesopore (11), prefabricated template component (2) are including being used for supporting precast panel (3) of concrete and back truss subassembly (4) that are used for supporting precast panel (3), back truss subassembly (4) and precast panel (3) fixed connection, precast panel (3) are located sluicing mesopore (11) outside, the top of precast panel (3) is to the direction slope of keeping away from sluicing mesopore (11), fine setting subassembly (5) that are used for adjusting precast panel (3) inclination still have been preset in the lateral wall of sluicing mesopore (11).

2. A concrete arch dam as recited in claim 1, wherein: the back truss assembly (4) comprises a main support column (41), a prefabricated oblique beam (43) and two prefabricated trusses (42), wherein the two prefabricated trusses (42) are located between the main support column (41) and a prefabricated panel (3), two ends of each prefabricated truss (42) are fixedly connected with the main support column (41) and the prefabricated panel (3) respectively, the main support column (41), the two prefabricated trusses (42) and the prefabricated panel (3) jointly form a quadrangle in a surrounding mode, two ends of each prefabricated oblique beam (43) are fixedly connected with the main support column (41) and the prefabricated panel (3) respectively, a fixing piece (6) is pre-embedded in a collecting surface (111) of the drainage center hole (11) of the dam body (1), and the bottom end of the main support column (41) is hinged to the fixing piece (6).

3. A concrete arch dam as recited in claim 2, wherein: the precast oblique beams (43) are multiple and parallel to each other.

4. A concrete arch dam as recited in claim 2, wherein: the fixing piece (6) comprises a connecting part (61) and a hooking part (62), the connecting part (61) is located in the drainage middle hole (11), the hooking part (62) is embedded into a cabin collecting surface (111) of the drainage middle hole (11), the bottom end of the main supporting column (41) is hinged to the connecting part (61), and the hooking part (62) is bent and the tail end of the hooking part extends towards the direction close to the drainage middle hole (11).

5. A concrete arch dam as recited in claim 2, wherein: the fine adjustment assembly (5) comprises a basket bolt (52) and two steel bar brace (51), the end parts of the two steel bar brace (51) are fixedly connected with the two ends of the basket bolt (52) respectively, a fixed anchor rod (7) is pre-buried in a bin collection surface (111) of the water drainage center hole (11), the end part, far away from the basket bolt (52), of one steel bar brace (51) is hinged to the fixed anchor rod (7), and the end part, far away from the basket bolt (52), of the other steel bar brace (51) is hinged to the position near the top of the main support column (41).

6. A concrete arch dam according to claim 5, wherein: the tail end of the fixing anchor rod (7) positioned in the bin collecting surface (111) of the drainage middle hole (11) extends towards the direction close to the interior of the drainage middle hole (11) to enable the fixing anchor rod (7) to be bent.

7. A concrete arch dam according to claim 3, wherein: and a reinforcing truss (431) is fixedly connected between the adjacent prefabricated oblique beams (43), and two ends of the reinforcing truss (431) are fixedly connected with two ends of the two prefabricated oblique beams (43) which are far away from each other respectively.

8. A concrete arch dam as recited in claim 1, wherein: and a cooling water pipe (8) is pre-distributed in the bin collecting surface (111) of the water drainage middle hole (11), and cooling liquid is filled in the cooling water pipe (8).

9. A concrete arch dam as recited in claim 8, wherein: the cooling water pipe (8) is continuously bent and extended in a reciprocating manner to form a snake shape.