CN112942257A - Landscape barrage giving consideration to traffic and construction method - Google Patents

Abstract

The invention relates to a landscape barrage giving consideration to traffic and a construction method thereof, wherein the landscape barrage comprises a barrage body and a barrage horizontal barrier river channel, the barrage body comprises an open upstream face, a stepped barrage face and a barrage seat, a support structure is arranged at the open position of the upstream face and fixed at the bottom of the barrage, and a water retaining slope is arranged at the top end of the upstream face; steps are sequentially arranged downwards along the water flow direction of the weir surface, the tail end of each step is provided with a convex water blocking ridge, a water storage surface is formed between the adjacent upper step and the adjacent lower step, and the step at the lower part is provided with an inverse arc-shaped tripping ridge; the steps and the jumping flow ridge form empty boxes by reinforced concrete vertical plates, the high-altitude step empty boxes are tunnels on both banks, and fillers are backfilled in the rest empty boxes. The landscape weir dam is suitable for areas with higher impoundment elevation or areas with steeper terrain conditions, the reinforced concrete vertical plate empty box structure can save the concrete consumption and reduce the self weight of the weir body, and the whole structure is safe and stable. The upstream face of the weir dam intercepts rubbish and can reduce downstream river rubbish pollution, the downstream ecological environment is improved, and the tunnel of the weir dam can facilitate the passage of both banks during flood.

Description

Landscape barrage giving consideration to traffic and construction method

Technical Field

The invention relates to the technical field of hydraulic engineering, in particular to a landscape weir dam giving consideration to traffic and a construction method.

Background

Traditional weir dam as low water head retaining structure, generally adopt the solid weir body of concrete, also play roles such as retaining, irrigation under satisfying the flood control prerequisite. With the development of social economy, landscape high barrages built according to landscape requirements appear in various places, namely, the upstream river sections of the barrages obtain better landscape effects by blocking up the water level of the barrages, and the upper parts of the barrages are provided with the passing function of communicating two banks through water flow steps.

However, when a high barrage is built, on one hand, the concrete consumption and the engineering quantity for building the barrage are increased, the built high barrage is unstable relative to foundation bearing due to the increase of the self weight, so that the barrage is easy to unbalance, and on the other hand, the dam surface is cracked due to consolidation and settlement of earthwork in the barrage, which is extremely dangerous.

The upstream surface of a high barrage is usually solid or open-close type, and when the platform is in flood season, the upstream garbage often passes through the barrage to reach the downstream, so that the downstream environment is polluted. In addition, upstream water passes through the upstream face and can be converged quickly to form a peak value to be left at the downstream, the earth surface is seriously washed, and the damage is serious.

The water-flowing stating step structure only meets the passing requirements of two banks at normal water level or in low water, and when flood is encountered, the water level submerges the barrage and cannot play an important traffic role.

Therefore, it is necessary to adopt a high-rise barrage which saves the concrete consumption, is convenient to construct, is safe and environment-friendly and gives consideration to traffic landscape.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and design a stepped box type landscape high barrage which is safe and stable in structure, saves the consumption of concrete, reduces the garbage pollution of downstream riverways and the traffic of flood.

In order to achieve the purpose, the invention provides a landscape barrage giving consideration to traffic, which comprises a barrage and a barrage horizontal barrier river course, and is characterized in that: the weir body comprises an open upstream face, a stepped weir face and a weir seat, wherein a support structure is arranged at the open position of the upstream face and fixed at the bottom of the weir, and a water retaining slope is arranged at the top end of the upstream face; steps are sequentially arranged downwards along the water flow direction of the weir surface, the tail end of each step is provided with a convex water blocking ridge, a water storage surface is formed between the adjacent upper steps and the adjacent lower steps, and the step at the lower part is provided with an inverse arc-shaped current jumping ridge;

the steps and the current jumping ridges are formed into empty boxes by reinforced concrete vertical plates, the empty boxes of the steps at the high position are tunnels at both banks, and fillers are backfilled in the rest empty boxes.

Furthermore, the open position of the upstream surface is provided with at least four support columns which are fixed on the weir seat.

Further, the height drop between each two adjacent upper and lower step water retaining ridges is not more than 30 cm. .

Furthermore, a plurality of cuboid water flowing steps are embedded and fixed on the top surface of the water retaining slope, the distance between every two adjacent water flowing steps is 20cm-30cm, and anti-skid grains are arranged on the surface of each water flowing step.

Furthermore, the bottom end of the weir base is provided with a front toe which is embedded under the riverbed and is vertical to the water facing outer wall of the weir base.

Furthermore, the jump threshold angle radian is 60-70 degrees.

Furthermore, two sides of the tunnel are buried in the dike and fixed.

Further, the box-type landscape high barrage compatible with traffic and the construction method thereof comprise the following steps:

determining the height of a weir body according to the landscape water surface rate required by an area and a high water head required by irrigation of peripheral farmland, determining the width of a weir dam according to the width of a riverway at present, and calculating the stage number of steps, the weir surface, a weir base vertical plate, a tunnel vertical plate, a step vertical plate, a run-off sill vertical plate and the thickness of a supporting column according to the difference value of the normal water levels of the upstream and the downstream of the riverway;

step two, building dikes on two banks respectively, excavating embedded grooves of a fixed tunnel for the dikes from top to bottom, building a reinforced concrete weir seat and a front toe, reserving a step vertical plate, a jump sill vertical plate and anchoring reinforcing steel bars of support columns in the weir seat, then pouring a reinforced concrete structure of a weir body to the top surface, wherein the step vertical plate, the jump sill vertical plate and the anchoring reinforcing steel bars of the support columns in the weir seat are reserved between the step vertical plate and the jump sill vertical plate, the pouring of a vertical template of the support columns is included, and the top surface of the upstream surface can be directly bound;

step three, directly binding reinforcing steel bars to the tunnel in the high step to pour the top surface, and filling the compacted fillers in the rest step empty boxes and the jumping flow bank empty boxes;

binding steel bars and vertical templates on the surface of the weir, and pouring concrete to form an integral structure of the weir dam;

and fifthly, after the integral structure is poured, restoring the backfill at the top of the dike to be flat so that the backfill is embedded into the weir body, and recovering the original appearance after the construction is finished.

Step six, pouring a plain concrete reservoir and a water retaining bank on the top surface of each step;

step seven, pouring a water retaining slope on the top end of the upstream face in concrete according to the water retaining height;

and step eight, embedding and fixing a plurality of water flowing steps at the top of the water retaining slope.

Compared with the prior art, the invention has the beneficial effects that:

the utility model provides a weir dam adopts reinforced concrete riser empty box structure, and inside is the earthwork and backfills, and it is convenient to be under construction, saves the concrete volume and alleviates weir body self weight, because the inside reinforced concrete structure that is of weir body, resistant curved resistance to compression, even inside earthwork appears subsiding and leads to the weir face unsettled, weir dam overall structure safety and stability guarantees that live time is of a specified duration. The stepped structure of the weir dam is suitable for areas with high impounded water elevation or areas with steep terrain conditions.

The open design of the side of the upstream face of the weir dam effectively separates and intercepts the garbage in the upstream, improves the river water environment, reduces the garbage pollution of the downstream river channel and improves the downstream ecological landscape.

Thirdly, the barrage can pass through, and the traffic on both sides is facilitated. In the plum flood season, pedestrians walk through the water flowing step additionally arranged on the top surface of the weir dam and pass through the river channel. In the stage flood season, when flood submerges the weir dam, patrol personnel can walk or drive, and safely pass through the tunnel additionally arranged in the weir dam, so that the passage of both banks is facilitated, and the timely development of flood prevention work is facilitated.

And fourthly, the tail end of the weir dam is additionally provided with a flow jumping sill, so that the kinetic energy of upstream water flow can be reduced, the impact on a downstream riverbed is reduced, the safety of the downstream riverbed is improved, the shape of a waterfall at the tail end of the weir dam is achieved, and the landscape effect is improved.

Drawings

FIG. 1 is a view illustrating the structure of the present invention for a accessible landscape barrage without embankment;

FIG. 2 is a schematic view (II) of the structure of the present invention for a passable landscape barrage without embankment;

FIG. 3 is a schematic structural diagram (III) of a passable landscape barrage and a construction method of the embankment;

FIG. 4 is a schematic cross-sectional view of the steps of a traffic-compatible landscape barrage of the present invention;

in the figure: a weir body 1; a water-facing surface 2; a water retaining slope 201; a stating step 202; a weir surface 3; a weir base 4; a front toe 401; a support pillar 5; a step 6; a reservoir 7; a water blocking ridge 8; skipping threshold 9; a vertical plate 10; a filler 11; a tunnel 12; and a bank 13.

Detailed Description

The invention is further illustrated by the following figures and examples.

As shown in fig. 1-3, it should be noted that in fig. 1, the direction of the water flow from upstream to downstream is the direction of the unidirectional arrow, and the present invention provides a traffic compatible landscape barrage, which includes a barrage 1, and the barrage 1 transversely blocks the river channel. The weir body 1 comprises an open upstream face 2, a stepped weir face 3 and a weir seat 4. The open position of upstream face 2 establishes four piece at least support columns 5 and is fixed in weir seat 4, and 2 tops of upstream face establish manger plate slopes 201, effectively reduce the upstream slope and fall, can slow down the velocity of water flow to smooth-going. The steps 6 are sequentially arranged downwards along the water flow direction of the weir surface 3, a water storage surface 7 is formed between the adjacent upper steps 6 and the adjacent lower steps 6, and the lower steps are provided with the reverse arc-shaped current jumping ridges 9. The stepped structure of the weir dam is suitable for areas with higher impounded water elevation or areas with steeper terrain conditions.

As shown in fig. 4, it should be noted that in fig. 4, the direction of water flow from upstream to downstream is along the direction of a unidirectional arrow, the steps 6 and the jump sills 9 are framed by reinforced concrete vertical plates 10 to form empty boxes, the empty boxes of the high-altitude steps are tunnels 12 on both sides, and fillers 11 are filled in the rest empty boxes to form the overall structure of the barrage, so that the concrete consumption is saved and the self weight of the barrage is reduced.

Horizontal toe 401 before the weir seat 4 bottom, it is perpendicular with the weir seat 4 outer wall that faces water, preceding toe 401 buries firmly weir seat 4 under the riverbed deeply, improves weir dam overall structure's security and stability.

The open design in the upstream face 2 effectively separates and intercepts upstream garbage, improves river water environment, and promotes downstream ecological landscape. The water flow passes through the water retaining slope 201 arranged at the top end of the upstream face 2 and then sequentially passes through the retaining of each stage of step 6, and the tail ends of the steps 6 are provided with the raised water retaining ridges 8, so that the upstream slope drop is effectively reduced, and the water flow speed can be reduced to be smooth. The low step is provided with the reverse arc-shaped jump flow ridge 9, wherein the angle radian of the selected angle is 60-70 degrees, water flow is selected to the air, the water flow is diffused to mix a large amount of air, then falls into a water cushion of a downstream riverbed, kinetic energy of upstream water flow can be reduced, impact on the downstream riverbed is reduced, safety of the downstream riverbed is improved, the shape of waterfall at the tail side of the weir dam is achieved, and the landscape effect is improved.

In the non-flood period, due to the fact that the amount of water in the upstream is small, construction personnel can conveniently and mechanically remove garbage accumulated in the upstream face 2 of the weir dam.

During plum flood season, when the upstream water flows over weir face 3, the water surface landscape effect is built by the water stored in water storage face 7 formed by steps 6 at all levels, and a plurality of cuboids are embedded and fixed on the top face of water retaining slope 201 to pass through a plurality of water retaining steps 202, so that the two-bank road can be communicated, the passage of surrounding residents is facilitated, anti-skidding lines are arranged on the surface of the water retaining steps 202, and the friction force is increased to ensure the passage safety of the residents. The stating step 202 is made of stone materials and is not easy to be corroded and stabilized by running water.

In the stage flood season, when flood submerges the weir dam, patrol personnel can walk or drive, and safely pass through the tunnel 12 additionally arranged in the weir dam, so that the passage of both banks is facilitated, and the timely development of flood prevention work is facilitated. Both sides of the tunnel 12 are buried in the dike 13 and fixed.

The construction method of the box-type landscape high barrage considering traffic comprises the following steps:

step one, determining the elevation of a weir body 1 according to the landscape water surface rate required by an area and a high water head required by irrigation of peripheral farmland, determining the width of a weir dam according to the width of a current river channel, and calculating the stage number of a step 6 and the thicknesses of a weir surface 3, a weir seat 4 vertical plate, a tunnel 12 vertical plate, a step 6 vertical plate, a jump sill 9 vertical plate and a support column 5 according to the difference value of the upstream and downstream normal water levels of the river channel.

And step two, building dikes 13 on two banks respectively, excavating embedded grooves of the fixed tunnels 12 for the dikes from top to bottom, building a reinforced concrete weir seat 4 and a front toe 401, reserving a step 6 vertical plate, a jump flow ridge 9 vertical plate and anchoring reinforcing steel bars of the support columns 5 in the weir seat 4, pouring the reinforced concrete structure of the weir body 1 to the top surface, pouring a vertical formwork of the support columns 4 and pouring a vertical formwork of the vertical plate 10, and directly binding the top surface of the upstream surface 2 for pouring the reinforcing steel bars. The distance between the support columns 5 is 4-8 cm.

And step three, directly binding reinforcing steel bars to the tunnel 12 in the high step to pour the top surface, and filling the compacted fillers in the empty boxes of the rest steps 6 and the empty boxes of the jump sill 9, so that the consumption of concrete is saved and the self weight of the weir body 1 is reduced.

Step four, binding the steel bars and the vertical templates of the weir face 3, pouring concrete to form a weir dam integral structure, wherein construction is convenient, and the weir face 3 is suspended even if the internal filler 11 is settled due to the fact that the steel bar supporting force is configured inside the weir body 1, and the weir dam integral structure is still safe and stable.

And fifthly, after the integral structure is poured, the backfill filler 11 on the top of the dike 13 is repaired to be flat, so that the fill is embedded into the weir body 1, and after the construction is finished, the original appearance is restored.

And step six, pouring plain concrete reservoir 7 and water blocking ridge 8 on the top surface of each step 6, effectively reducing the upstream slope drop, and slowing down the water flow to be smooth.

And seventhly, pouring the water retaining slope 201 on the top end of the upstream face 2 according to the water retaining height.

Step eight, a plurality of water flow steps 202 are embedded and fixed at the top of the water retaining slope 201 for pedestrians to pass through.

Compared with the traditional solid barrage, the barrage 1 of the invention has a stepped structure and a plurality of frame type empty boxes are combined, the empty boxes are built by utilizing the reinforced concrete vertical plates 10, and the empty boxes are filled with the fillers 11, so that on one hand, the stable structure of the barrage is ensured by utilizing the bending resistance and the compression resistance of the reinforced concrete and the self weight of the fillers 11, the better bearing of water weight and human weight is ensured, on the other hand, the seepage risk during water storage is prevented by utilizing the characteristics of the reinforced concrete, the phenomena of structural instability, cracking and the like caused by flood scouring are avoided, on the other hand, the use amount of concrete is saved and the self weight of the barrage is reduced, and the. The filler 11 is backfilled soil.

The landscape weir dam giving consideration to traffic is suitable for small-sized water conservancy weir dam engineering, water ecological engineering and water environment improvement engineering.

Finally, it should be noted that the above-mentioned list is only the specific embodiment of the present invention. Obviously, the present invention is not limited to the above embodiments, and many modifications are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the present invention are to be considered within the scope of the invention.

Claims (8)

1. The utility model provides a compromise current view weir dam, includes the weir body, weir body horizontal bar river course, its characterized in that: the weir body comprises an open upstream face, a stepped weir face and a weir seat, wherein a support structure is arranged at the open position of the upstream face and fixed at the bottom of the weir, and a water retaining slope is arranged at the top end of the upstream face; steps are sequentially arranged downwards along the water flow direction of the weir surface, the tail end of each step is provided with a convex water blocking ridge, a water storage surface is formed between the adjacent upper steps and the adjacent lower steps, and the step at the lower part is provided with an inverse arc-shaped current jumping ridge;

the steps and the current jumping ridges are formed into empty boxes by reinforced concrete vertical plates, the empty boxes of the steps at the high position are tunnels at both banks, and fillers are backfilled in the rest empty boxes.

2. The traffic compatible landscape barrage of claim 1, wherein: the open position of the upstream surface is provided with at least four supporting columns which are fixed on the weir seat.

3. The traffic compatible landscape barrage of claim 1, wherein: the height fall between each two adjacent upper and lower step water retaining sills is not more than 30 cm.

4. The traffic compatible landscape barrage of claim 2, wherein: a plurality of cuboids are embedded and fixed on the top surface of the water retaining slope, the distance between every two adjacent water retaining steps is 20cm-30cm, and anti-skid lines are arranged on the surface of each water retaining step.

5. The traffic compatible landscape barrage of claim 4, wherein: the bottom end of the weir base is provided with a transverse front toe which is buried under the riverbed and is vertical to the water facing outer wall of the weir base.

6. A trafficable landscape barrage as claimed in any one of claims 1-5 wherein: the jumping flow threshold angle radian is 60-70 degrees.

7. The traffic compatible landscape barrage of claim 6, wherein: and two sides of the tunnel are buried in the dike and fixed.

8. The method for constructing a traffic-compatible landscape barrage as claimed in any one of claims 2 to 5, wherein: the construction method of the box-type landscape high barrage considering traffic comprises the following steps:

determining the height of a weir body according to the landscape water surface rate required by an area and a high water head required by irrigation of peripheral farmland, determining the width of a weir dam according to the width of a riverway at present, and calculating the stage number of steps, the weir surface, a weir base vertical plate, a tunnel vertical plate, a step vertical plate, a run-off sill vertical plate and the thickness of a supporting column according to the difference value of the normal water levels of the upstream and the downstream of the riverway;

step two, building dikes on two banks respectively, excavating embedded grooves of a fixed tunnel for the dikes from top to bottom, building a reinforced concrete weir seat and a front toe, reserving a step vertical plate, a jump sill vertical plate and anchoring reinforcing steel bars of support columns in the weir seat, then pouring a reinforced concrete structure of a weir body to the top surface, wherein the step vertical plate, the jump sill vertical plate and the anchoring reinforcing steel bars of the support columns in the weir seat are reserved between the step vertical plate and the jump sill vertical plate, the pouring of a vertical template of the support columns is included, and the top surface of the upstream surface can be directly bound;

step three, directly binding reinforcing steel bars to the tunnel in the high step to pour the top surface, and filling the compacted fillers in the rest step empty boxes and the jumping flow bank empty boxes;

binding steel bars and vertical templates on the surface of the weir, and pouring concrete to form an integral structure of the weir dam;

and fifthly, after the integral structure is poured, restoring the backfill at the top of the dike to be flat so that the backfill is embedded into the weir body, and recovering the original appearance after the construction is finished.

Step six, pouring plain concrete water storage surfaces and water blocking sills on the top surfaces of all the steps;

step seven, pouring a water retaining slope on the top end of the upstream face in concrete according to the water retaining height;

and step eight, embedding and fixing a plurality of water flowing steps at the top of the water retaining slope.

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