阅读说明：本技术 闸墩和鱼尾墩的布置结构 (Arrangement structure of gate pier and fishtail pier ) 是由 石太军 李建会 张丹 王�锋 刘跃 于 2021-08-23 设计创作，主要内容包括：本发明属于水利水电工程技术领域,具体公开了一种闸墩和鱼尾墩的布置结构,旨在解决现有布置结构的整体性不好,且鱼尾墩易被漂浮物撞击、水流脉动压力等破坏的问题。该闸墩和鱼尾墩的布置结构通过将鱼尾墩与闸墩设置一体,并将鱼尾墩设置在闸底板的第一斜坡段上,且使鱼尾墩与底板结构缝相距0.9～1.1m,这样不仅可以在满足基础不均匀沉降的相关规范要求下,提高闸墩和鱼尾墩布置结构的整体性,增加鱼尾墩的各向约束,均化鱼尾墩底部基础的较大弯矩,而且还可以降低水流脉动压力作用下鱼尾墩的往复振动的频率和幅度,增加鱼尾墩抗撞击和高速水流脉动压力破坏的能力,从而降低鱼尾墩局部损坏甚至倾倒的可能性。(The invention belongs to the technical field of hydraulic and hydroelectric engineering, and particularly discloses an arrangement structure of a gate pier and a fishtail pier, aiming at solving the problems that the existing arrangement structure is poor in integrity, and the fishtail pier is easily damaged by floaters, water flow pulsating pressure and the like. This gate pier and arrangement structure of fish tail mound are through setting up fish tail mound and gate pier integratively, and set up the fish tail mound on the first slope section of gate bottom plate, and make the fish tail mound apart from 0.9 ~ 1.1m with bottom plate structure seam, not only can be under the relevant standard requirement that satisfies the uneven settlement of basis like this, improve gate pier and fish tail mound arrangement structure's wholeness, increase the anisotropic restraint of fish tail mound, the great moment of flexure of homogenization fish tail mound bottom basis, but also can reduce the frequency and the range of the reciprocating vibration of fish tail mound under the effect of rivers pulsating pressure, increase the ability that fish tail mound crashproof and high-speed rivers pulsating pressure destroy, thereby reduce the possibility that fish tail mound local damage even emptys.)

1. The gate pier and fishtail pier arrangement structure comprises gate piers (1), fishtail piers (2), gate bottom plates (4) and energy dissipation facility bottom plates (6), wherein the gate bottom plates (4) and the energy dissipation facility bottom plates (6) are respectively arranged on a dam foundation (7); the method is characterized in that: the downstream section of the brake bottom plate (4) is a first slope section (5), the upstream section of the energy dissipation facility bottom plate (6) is a second slope section and is connected with the first slope section (5) of the brake bottom plate (4) through the second slope section, the slope surface of the first slope section (5) is in smooth transition connection with the slope surface of the second slope section, and a bottom plate structure gap (3) is formed between the first slope section (5) and the second slope section; the gate pier (1) is arranged on the gate bottom plate (4); the fishtail pier (2) is of an integral structure with the gate pier (1), is positioned at the downstream end of the gate pier (1) and is arranged on the first slope section (5); the distance between the fishtail pier (2) and the structural seam (3) of the bottom plate is L, and L is more than or equal to 0.9m and less than or equal to 1.1 m.

2. The gate pier and fishtail pier arrangement of claim 1, wherein: the gate pier (1) and the fishtail pier (2) are reinforced concrete structures which are integrally reinforced and integrally molded by integrally erecting a mould and then pouring concrete.

3. The gate pier and fishtail pier arrangement of claim 1 or 2, wherein: a key groove is formed in the bottom plate structure seam (3), and a water stopping structure and filling materials are arranged in the bottom plate structure seam (3).

4. The gate pier and fishtail pier arrangement of claim 3, wherein: the width of the bottom plate structure seam (3) is 2 cm.

Technical Field

The invention belongs to the technical field of hydraulic and hydroelectric engineering, and particularly relates to an arrangement structure of gate piers and fishtail piers.

Background

The sluice is used as a water retaining and discharging structure with a low water head, and is widely applied to water conservancy and hydropower engineering. The sluice is generally composed of a chamber section, upstream and downstream connecting sections and two shore connecting sections. The lock chamber section is a main body of a sluice project, mainly comprises a lock pier, a lock bottom plate and a gate, and is used for controlling the upstream water level and regulating the downward discharge flow; the downstream connecting section mainly comprises an energy dissipation facility bottom plate, an energy dissipater and two bank side walls and is mainly used for dissipating energy, preventing impact and safely discharging seepage of a gate base and two banks.

The gate pier is a pier structure which is used for supporting a gate, separating gate holes and connecting two banks in a gate chamber; the water-binding pier is a streamline pier structure which is arranged close to the downstream side of the gate pier for smooth water flow, and is generally called a fishtail pier because the water-binding pier is shaped like a fishtail. Energy dissipation scour protection bottom plate slope section is the transition structure who sets up at energy dissipation facility bottom plate anterior segment for linking up the floodgate bottom plate, because energy dissipation facility bottom plate elevation is less than floodgate bottom plate elevation usually, consequently, transition structure sets up the slope usually not steeply in 1: 4 in the form of a ramp.

At present, when the structure design is arranged, the gate pier 1 is generally designed into a gate chamber section, the fishtail pier 2 is designed into a downstream connecting section, the gate chamber section and the downstream connecting section are butted in a structural seam mode, a pier structural seam 8 is formed between the gate pier 1 and the fishtail pier 2, and a bottom plate structural seam 3 is formed between the gate bottom plate 4 and the energy dissipation facility bottom plate 6, as shown in fig. 1, so that adverse effects such as a concrete cracking structure and the like caused by uneven settlement deformation of a foundation of a corresponding part are reduced. However, the arrangement structure causes the separation of the fishtail pier 2 and the gate pier 1, only the bottom of the fishtail pier 2 is fixedly connected with the bottom plate 6 of the energy dissipation scour prevention section, and the structure of the fishtail pier is similar to a rod piece with only one end fixed, so that when the fishtail pier 2 is subjected to lateral pressure such as flood discharge flow, the bending moment of a foundation part is large; when water flow pulsating pressure acts, the whip sheath effect appears at the top of the fishtail pier 2, the pier body vibrates in a larger amplitude, the strength fatigue of the material is aggravated, and cracks and even damages are easy to appear; in addition, the effective area of the cross section of the foundation at the bottom of the fishtail pier 2 is reduced after long-time high-speed water flow scouring; in addition, the floating objects such as large floating trees and the like which happen in the flood season impact the fishtail pier 2 along with the water flow in the lateral direction, so that the base part at the bottom of the fishtail pier 2 generates instantaneous huge bending moment. The arrangement structure has the possibility of local damage and even toppling over of the fishtail pier 2 under the interaction of various forces.

Disclosure of Invention

The invention provides an arrangement structure of a gate pier and a fishtail pier, and aims to solve the problems that the existing arrangement structure is poor in integrity, and the fishtail pier is easily damaged by the impact of floaters, water flow pulsating pressure and the like.

The technical scheme adopted by the invention for solving the technical problems is as follows: the gate pier and fishtail pier arrangement structure comprises a gate pier, a fishtail pier, a gate bottom plate and an energy dissipation facility bottom plate, wherein the gate bottom plate and the energy dissipation facility bottom plate are respectively arranged on a dam foundation; the downstream section of the gate bottom plate is a first slope section, the upstream section of the energy dissipation facility bottom plate is a second slope section and is connected with the first slope section of the gate bottom plate through the second slope section, the slope surface of the first slope section is in smooth transition connection with the slope surface of the second slope section, and a bottom plate structure gap is formed between the first slope section and the second slope section; the gate pier is arranged on the gate bottom plate; the fishtail pier is of an integrated structure with the gate pier, is positioned at the downstream end of the gate pier and is arranged on the first slope section; the distance between the fishtail pier and the structural seam of the bottom plate is L, and L is more than or equal to 0.9m and less than or equal to 1.1 m.

Further, the gate pier and the fishtail pier are reinforced concrete structures which are integrally reinforced and integrally molded by integrally erecting a mould and then pouring concrete.

Further, a key groove is formed in the bottom plate structure seam, and a water stopping structure and filling materials are arranged in the bottom plate structure seam.

Further, the width of the bottom plate structure seam is 2 cm.

The invention has the beneficial effects that: set up as an organic whole through fishtail mound and gate pier, and set up the fishtail mound on the first slope section of gate bottom plate, and make the fishtail mound apart from 0.9 ~ 1.1m with bottom plate structure seam, not only can satisfy under the relevant standard requirement of the uneven settlement of basis like this, improve gate pier and fishtail mound arrangement structure's wholeness, increase the each direction restraint of fishtail mound, the great moment of flexure of homogenization fishtail mound bottom of the foot basis, and can also reduce the frequency and the range of the reciprocating vibration of fishtail mound under the rivers pulsating pressure effect, increase the ability that fishtail mound crashproof and high-speed rivers pulsating pressure destroy, thereby reduce the possibility that fishtail mound local damage perhaps even emptys.

Drawings

FIG. 1 is a schematic diagram of the arrangement of a prior gate pier and fishtail pier;

FIG. 2 is a schematic structural view of a plan layout of the present invention;

FIG. 3 is a schematic structural view cut along the direction of water flow;

labeled as: the gate pier comprises a gate pier 1, a fishtail pier 2, a bottom plate structure gap 3, a gate bottom plate 4, a first slope section 5, an energy dissipation facility bottom plate 6, a dam foundation 7 and a pier structure gap 8;

the direction of the arrows in fig. 2 indicates the direction of the water flow.

Detailed Description

The invention will be further explained with reference to the drawings.

Referring to fig. 2 and 3, the gate pier and fishtail pier arrangement structure includes a gate pier 1, a fishtail pier 2, a gate bottom plate 4 and an energy dissipation facility bottom plate 6, wherein the gate bottom plate 4 and the energy dissipation facility bottom plate 6 are respectively arranged on a dam foundation 7; the downstream section of the gate bottom plate 4 is a first slope section 5, the upstream section of the energy dissipation facility bottom plate 6 is a second slope section and is connected with the first slope section 5 of the gate bottom plate 4 through the second slope section, the slope surface of the first slope section 5 is in smooth transition connection with the slope surface of the second slope section, and a bottom plate structure seam 3 is formed between the first slope section 5 and the second slope section; the gate pier 1 is arranged on the gate bottom plate 4; the fishtail pier 2 is of an integral structure with the gate pier 1, is positioned at the downstream end of the gate pier 1 and is arranged on the first slope section 5; the distance between the fishtail pier 2 and the structural seam 3 of the bottom plate is L, and L is more than or equal to 0.9m and less than or equal to 1.1 m.

According to the arrangement structure of the gate pier and the fishtail pier, the fishtail pier 2 and the gate pier 1 are integrated, the fishtail pier 2 is arranged on the first slope section 5 of the gate bottom plate 4, and the distance between the fishtail pier 2 and the bottom plate structural seam 3 is 0.9-1.1 m, so that the fishtail pier 2 can be classified into the gate chamber section, the overall length of the gate chamber section is increased, and the safety of the fishtail pier 2 can be greatly improved under the condition that the differential settlement meets the requirements of relevant specifications; in addition, not only can improve gate pier 1 and 2 arrangement structure's of fishtail integrality like this, increase fishtail 2 each direction restraint, the great moment of flexure of 2 bottom foundations of homogenization fishtail piers, but also can reduce the frequency and the range of the reciprocating vibration of fishtail pier 2 under the water current pulsating pressure effect, increase the ability that fishtail pier 2 anti-impact and high-speed water current pulsating pressure destroy to reduce the possibility that fishtail pier 2 local damage even emptys.

The downstream section of the gate bottom plate 4 is set as a first slope section 5, and the upstream section of the energy dissipation facility bottom plate 6 is set as a second slope section, so that the gate bottom plate 4 and the energy dissipation facility bottom plate 6 are conveniently and effectively connected, the adverse effect of water flow on the bottom plate structural joint 3 is reduced, and the formed bottom plate structural joint 3 can reduce the adverse effects of concrete structure cracking and the like caused by uneven settlement deformation of the dam foundation 7 at the corresponding part; the specific location of the structural seams 3 of the floor is generally determined according to the conditions associated with the dam foundation 7; a key groove is arranged in the bottom plate structure seam 3, and a water stopping structure and a filling material are arranged in the bottom plate structure seam 3. The water stopping structure can be arranged in various ways, such as: arranging rubber water stop, metal water stop and the like; the filling material provided may be of various kinds, for example: filled with asphalt wood board, asphalt hemp thread, polyethylene foam board, etc. or their combination. The width of the floor structure slot 3 is preferably 2 cm.

The construction gate pier 1 and the fishtail pier 2 are of an integral casting structure, namely, a structural joint is not formed between the gate pier 1 and the fishtail pier 2, and the fishtail pier 2 is used as a part of the gate pier 1 for reinforcement and integral casting. When the gate pier 1 and the fishtail pier 2 are constructed, the gate bottom plate 4 is integrally reinforced and integrally molded, and concrete is poured for integral molding; after concrete of the gate pier 1 and the fishtail pier 2 is poured, maintenance is carried out according to the requirements of heat preservation and moisture preservation in relevant standards; the concrete moisture-keeping measures comprise shielding and covering; the concrete heat preservation measures comprise water cooling by embedding a cooling water pipe in the concrete, sprinkling water, spraying, top water storage maintenance and the like.

Considering that the longer the distance between the bottom plate structure seam 3 and the tail part of the downstream side of the fishtail pier 2 is, the longer the length and the larger the area of the gate bottom plate 4 are, the higher the requirement on the concrete pouring capacity during construction is, and the more unfavorable the control on the concrete temperature of the whole structure is; the greater the difficulty of treating the uneven settlement of the gate bottom plate 4; meanwhile, considering that the closer the bottom plate structure seam 3 is to the tail part of the downstream side of the fishtail pier 2, the greater the influence of the sluicing confluence turbulence of two gate holes at the tail end of the fishtail pier 2 is, and the greater the influence of the construction time sequence and the construction disturbance of the high-low building structure is, the higher the requirements on the water stopping embedding and water stopping peripheral steel bar laying construction and quality in the bottom plate structure seam 3 are; the distance L between the fishtail 2 and the floor structure seam 3 is therefore limited to 0.9 to 1.1m, preferably 1m between the fishtail 2 and the floor structure seam 3.