CN205576860U - Dam crest is as floodgate dam structure of traffic bridge - Google Patents

Abstract

The utility model discloses a gate dam structure with a dam crest used as a traffic bridge, comprising a gate pier used as a traffic bridge at the dam crest and a stilling pool for energy dissipation; the stilling pool is connected to the gate pier downstream, and the upstream end of the stilling basin is located in the pier. The dam crest of the utility model is used as the gate and dam structure of the traffic bridge. The upstream end of the stilling pool is located in the gate pier. The energy dissipation purpose of the design of the stilling basin is to reduce the torrent vibration of the sluice caused by the backflow under the sluice when the sluice discharges.

Description

The dam crest is used as a gate and dam structure for traffic bridges

technical field

The utility model relates to the technical field of hydraulic dam energy dissipation, in particular to a gate dam structure with a dam crest used as a traffic bridge.

Background technique

For the gate and dam structures whose dam crest is used for traffic bridges, the design length of the gate pier section is usually increased compared with conventional gate dams. When arranging the gate position, in order to ensure the normal operating conditions and make full use of the compressive performance of the gate pier concrete, the gate is generally set at the upstream end of the gate pier section.

Conventional gates are set in the middle or lower part of the dam structure of the gate pier, and the water flow out of the gate can quickly enter the stilling basin, forming a stable bottom flow energy dissipation, and achieving the energy dissipation purpose of the stilling basin design. For the gate dam structure in which the gate 12 is arranged at the upstream end of the gate pier 11, as shown in Figure 1, the water flowing out of the gate enters the stilling pool 13 after passing through a certain length of the gate pier section. If the downstream water level is relatively low, then Underflow energy dissipation is formed in the stilling pool 13; if the design downstream water level is relatively high, then under the action of the large thrust of the gate 12, the top of the discharge flow forms a large backflow area, and the backflow intermittently beats the gate 12 to form a gate The torrent vibration of the 12 discharges can easily cause the gate 12 to be damaged.

Utility model content

The technical problem to be solved by the utility model is to provide an improved dam crest used as a gate and dam structure for traffic bridges.

The technical solution adopted by the utility model to solve the technical problems is: to provide a gate dam structure with the top of the dam as a traffic bridge, including a pier used as a traffic bridge at the top of the dam, and a stilling pool for energy dissipation; The stilling basin is connected downstream of the gate pier, and the upstream end of the stilling basin is located inside the gate pier.

Preferably, the dam structure also includes an inspection door slot and a working door slot arranged at the upstream end of the gate pier;

The access door slot and the working door slot are parallel and spaced apart, and the access door slot is located upstream of the working door slot.

Preferably, the dam structure further includes a first gate arranged at the bottom of the maintenance door slot, and a second gate arranged at the bottom of the working door slot.

Preferably, the first gate and the second gate are located at the upstream end of the pier.

Preferably, the inspection door slot and the working door slot are located on the outer side of the traffic bridge.

Preferably, the bottom surface of the upstream end of the stilling basin is a slope.

Preferably, preferably, the dam structure further includes a sea diffuser, and the sea diffuser is laid to connect the downstream end of the stilling basin.

Preferably, the seam is a concrete seam or a masonry stone seam.

The dam crest of the utility model is used as the gate and dam structure of the traffic bridge. The upstream end of the stilling pool is located in the gate pier. The energy dissipation purpose of the design of the stilling basin is to reduce the torrent vibration of the sluice caused by the backflow under the sluice when the sluice discharges.

Description of drawings

The utility model will be further described below in conjunction with accompanying drawing and embodiment, in the accompanying drawing:

Fig. 1 is the sectional structure schematic diagram of gate dam structure in the prior art;

Fig. 2 is a schematic cross-sectional structure diagram of a gate and dam structure according to an embodiment of the present invention.

detailed description

In order to have a clearer understanding of the technical features, purposes and effects of the utility model, the specific implementation of the utility model is described in detail with reference to the accompanying drawings.

As shown in Figure 2, the dam crest of an embodiment of the utility model is used as a traffic bridge gate dam structure, including the gate pier 2 used as a traffic bridge 21 at the dam crest, and a stilling pool 3 for energy dissipation.

Wherein, the stilling pool 3 is connected downstream of the gate pier 2, and the upstream end of the stilling pool 3 is located in the gate pier 2, so that the water flowing out of the gate enters the stilling pool 3 soon after passing through the gate pier section. For the case where the gate is arranged upstream of the gate pier 2, when the sluice discharges, the discharge can quickly enter the stilling basin 3, forming a stable bottom flow energy dissipation, achieving the energy dissipation purpose of the design of the stilling basin 3, and at the same time reducing the discharge rate of the sluice. The gate torrent vibration problem caused by the backflow under the gate during flow.

In this embodiment, the bottom surface 31 of the upstream end of the stilling pool 3 is an inclined surface, and the inclined surface is connected with the downstream bottom surface of the gate pier 2 . The bottom plate of the stilling basin 3 is usually a concrete structure, and the bottom surface 31 on the bottom plate has a high structural strength.

The dam structure also includes an inspection door slot 4 and a working door slot 5 arranged at the upstream end of the gate pier 2 . The inspection door slot 4 and the working door slot 5 are parallel and spaced apart, and the inspection door slot 4 is located upstream of the working door slot 5 , that is, the inspection door slot 4 is located on the side of the working door slot 5 away from the stilling pool 3 .

On the gate pier 2 , the inspection door slot 4 and the working door slot 5 are located on the outside as the traffic bridge 21 . As shown in FIG. 2 , the traffic bridge 21 is correspondingly above the upstream end of the stilling basin 3 .

In addition, the dam structure also includes a first gate 6 arranged at the bottom of the maintenance door slot 4 and a second gate 7 arranged at the bottom of the working door slot 5 . Both the first gate 6 and the second gate 7 are located at the upstream end of the pier 2 . When the second gate 7 is opened to discharge the flow, the discharge flow can quickly enter the stilling basin 3 .

Further, the gate and dam structure may also include a seaman 8 , and the seaman 8 is laid to connect the downstream end of the stilling basin 3 . Haiman 8 is mainly used as energy dissipation and anti-scour measures, and its function is to further dissipate energy and protect the riverbed. As an option, Seaman 8 can be a concrete seam or a masonry stone seam.

It can be understood that the above-mentioned door slots, gates, and seaman 8 can all be realized by existing technologies.

The above is only an embodiment of the utility model, and does not limit the patent scope of the utility model. Any equivalent structure or equivalent process conversion made by using the utility model specification and accompanying drawings, or directly or indirectly used in other Related technical fields are all included in the patent protection scope of the present utility model in the same way.

Claims (8)

1. a dam crest is used as the gate dam structure of traffic bridge, it is characterized in that, comprises dam crest as the gate pier (2) of traffic bridge (21) and the stilling pool (3) that is used for energy dissipation; The stilling basin (3) is connected downstream of the gate pier (2), and the upstream end of the stilling basin (3) is located inside the gate pier (2). 2. The gate and dam structure according to claim 1, characterized in that, the gate and dam structure also includes an inspection door slot (4) and a working door slot (5) arranged at the upstream end of the gate pier (2); The inspection door slot (4) and the working door slot (5) are parallel and spaced apart, and the inspection door slot (4) is located upstream of the working door slot (5). 3. The dam structure according to claim 2, characterized in that the dam structure further comprises a first gate (6) arranged at the bottom of the maintenance door slot (4), and a first gate (6) arranged at the bottom of the working door slot (5) Second gate (7) at the bottom. 4. The dam structure according to claim 3, characterized in that, the first gate (6) and the second gate (7) are located at the upstream end of the gate pier (2). 5. The dam structure according to claim 2, characterized in that, the inspection door slot (4) and the working door slot (5) are located outside the traffic bridge (21). 6. The gate and dam structure according to claim 1, characterized in that, the bottom surface (31) of the upstream end of the stilling basin (3) is an inclined surface. 7. The gate and dam structure according to any one of claims 1-6, characterized in that the gate and dam structure also includes a sea diffuser (8), and the sea diffuser (8) is laid and connected to the stilling pool (3 ) downstream end. 8. The gate and dam structure according to claim 7, characterized in that, the diffuser (8) is a concrete diffuser or a mortared stone diffuser.