CN217556908U - Rockfill body anchoring structure - Google Patents

Abstract

The utility model discloses a rockfill anchoring structure, belonging to the technical field of hydraulic engineering; the dam comprises a dam body, anchoring beams, anchor bars and a relief groove, wherein the relief groove is formed in the dam body, the dam body comprises a rockfill body, a plurality of anchoring beams are arranged in the rockfill body, the anchoring beams are connected with the relief groove through the anchor bars, each anchoring beam comprises an upper supporting beam, a lower supporting beam and a main beam, the upper side and the lower side of each main beam are respectively and integrally poured with a plurality of upper supporting beams and lower supporting beams, the upper supporting beams and the lower supporting beams are arranged along the beam body of the main beam in a staggered mode, the junction of each upper supporting beam or lower supporting beam and the main beam is connected with one anchor bar, the anchor bars are of I-shaped or C-shaped structures, and the two ends of each anchor bar are respectively arranged in the anchoring beams and the relief groove; the utility model discloses simple structure has improved the anchoring effect of anchoring structure and the anti-skidding stability of let out the groove, is favorable to promoting the popularization and the application of dam crest overflow rock-fill dam.

Description

Rockfill body anchoring structure

Technical Field

The utility model relates to a rockfill body anchor structure belongs to hydraulic engineering technical field.

Background

The rockfill dam foundation has strong topographic applicability and high cost performance, and is one of the dam retaining structures widely applied at present. When the reservoir adopts a rock-fill dam to retain water, a low and low dummy opening is usually selected to modify a spillway, or when the slope of a dam bank slope is slow and the topographic and geological conditions are good, the spillway can also be selected to be constructed on the dam bank slope so as to discharge excess flood. However, when the reservoir has no short or low dumb opening and the slopes of the two banks of the dam are high and steep, the excavation of the spillway on the bank slope of the dam abutment can bring about the problems of huge earth and rock engineering, high slope management, large-area ecological damage, water and soil conservation, huge waste of soil, huge construction cost and the like. At this time, if the spillway is built on the rockfill dam, that is, the spillway is integrated with the rockfill dam, so that the dam can retain water and discharge flood, and the problems can be avoided.

When the rockfill dam for retaining water is integrated with the spillway, the dam body is the foundation of the spillway, and the dam deforms under the action of water pressure, so that the deformation and secondary internal force of the spillway structure can be caused; when the spillway spills, the problems of water pressure, water flow discharge dragging force, vibration and the like can be formed on the dam surface, and the deformation and stability of the rock-fill dam are influenced. Dam and spillway interact, and after the integration of both, also can compromise when one party fails the affairs and the other party fails the affairs, has superimposed the risk. Therefore, the dam top overflow rock-fill dam is less in application, mainly focuses on the medium-low dam, and has less related experience and research, which greatly limits the popularization and application of the economic dam construction structure. With the rapid development of scientific calculation and construction machinery, the dam top overflow rock-fill dam can be better analyzed and designed, the dam body can be compacted by advanced construction technology, the engineering risk is greatly reduced, and conditions and guarantee are provided for the popularization and application of the economical dam construction structure.

The spillway chute of dam crest overflow rock-fill dam is located the low reaches dam slope of dam, during spillway flood discharge, the chute takes place the flow induced vibration under rivers pulsating pressure, in order to increase the stability of chute, set up single rectangular cross section's concrete anchor roof beam in the rockfill body in the dam usually at present, the horizontal anchor muscle through simple arrangement comes the anchor chute, the anchor effect of this kind of structure and the stability of chute are relatively poor, the chute is connected with the anchor of rockfill dam body and treats further enhancement.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a rockfill body anchoring structure.

The utility model adopts the technical proposal that: a rockfill anchoring structure is designed, and comprises a dam body, anchoring beams, anchor ribs and a relief groove, wherein the relief groove is formed in the dam body, a cushion layer, a transition layer and the like (not shown in the attached drawings) are also arranged at the bottom of the relief groove, the dam body comprises a rockfill body, a plurality of anchoring beams are arranged in the rockfill body, the anchoring beams are arranged in an array mode along the inclined direction of the relief groove, the anchoring beams are connected with the relief groove through the anchor ribs, each anchoring beam comprises an upper supporting beam, a lower supporting beam and a main beam, a plurality of upper supporting beams and a plurality of lower supporting beams are integrally poured on the upper side and the lower side of the main beam respectively, the contact area between the anchoring beams and the rockfill body is increased, the upper supporting beams and the lower supporting beams are arranged in a staggered mode along the main beam body, stress concentration is reduced, each upper supporting beam or the junction of the lower supporting beam and the main beam is connected with an anchor bar, namely an upper row of anchor bars and a lower row of anchor bars are arranged between each anchor beam and the relief groove, the upper row of anchor bars and the lower row of anchor bars are staggered, the anchoring effect is better, the anchor bars are I-shaped or C-shaped structures, two ends of each anchor bar are respectively arranged in the anchor beam and the relief groove, and the anchor bars are vertically arranged, namely if the anchor bars are I-shaped, wing rods of the anchor bars connected to one end of each anchor beam are positioned in the supporting beams and the main beams of the anchor beams, if the anchor bars are C-shaped structures, the wing rods of the anchor bars connected to one end of each anchor beam are positioned in the supporting beams or the main beams of the anchor beams, the connection between the anchor bars and the anchor beams is more firm, the anchoring effect is better, and the anchor bars are arranged at the junction of the main beams and the anchor beams, so that the anchor beams are stressed evenly; and the anchoring beam is arranged into a structure that the main beam and the plurality of supporting beams are integrally formed, so that an enough contact stress surface between the anchoring beam and the rockfill body is ensured, and the pouring cost and the volume of the anchoring beam are controlled.

Furthermore, the anchoring beam is formed by pouring concrete and a reinforcement cage, and the shape of the reinforcement cage (not shown in the attached drawings) is the same as that of the anchoring beam, so that the structural strength of the anchoring beam is ensured, and the anchoring connection effect is enhanced.

Furthermore, the anchor bar is characterized by further comprising a sleeve, wherein the sleeve is coated on the belly of the anchor bar, and a cement slurry layer is filled in an interlayer between the sleeve and the anchor bar, so that the anti-corrosion capability and the structural strength of the anchor bar are improved.

Furthermore, a plurality of circles of reinforcing rings are arranged outside the sleeve, the sleeve and the reinforcing rings are made of metal materials and are welded and connected, and therefore anchoring force and structural strength of the anchor bars are improved.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses set the anchor beam into the structure that girder and strutbeam are constituteed, increase the resistance between anchor beam and the rockfill body, strengthen the anchor effect of anchor beam, the strutbeam is staggered from top to bottom of girder sets up, avoid stress concentration, set up two rows of anchor bars anchor between every anchor beam and the chute, strengthen the connection of chute and rockfill body, and can play the damping action to the vibration that the flood discharge produced, improve the stability of chute, set the anchor bar into I type or C type structure, strengthen the joint strength between anchor bar and anchor beam and anchor bar and chute; the utility model discloses the anchor effect of anchor structure is better with the stability of let-off groove, and sound construction, let-off groove are connected with the anchor of the rock-fill dam body and are waited further the reinforcing, are favorable to promoting the popularization and the application of dam crest overflow rock-fill dam.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic cross-sectional view of the present invention.

Fig. 2 is the utility model discloses equipment schematic diagrams such as anchor roof beam and anchor bar.

In the figure: 1-anchoring beam, 11-upper supporting beam, 12-lower supporting beam, 13-main beam, 2-anchor bar, 3-chute, 4-rockfill, 5-sleeve and 6-reinforcing ring.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" should be construed broadly and include, for example, fixed connections, detachable connections, or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, in the description of the present invention, unless otherwise specified, the terms "plurality", and "plural groups" mean two or more, and the terms "a plurality", and "a plurality" mean one or more. In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like are used, they are only used for convenience of description and simplification of the description, and they do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" if used herein are for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Example 1

As shown in fig. 1 and 2: the utility model provides a rockfill body anchor structure, includes dam body, anchor roof beam 1, anchor rib 2 and let-off groove 3, let-off groove 3 sets up on the dam body, the dam body includes rockfill body 4, set up a plurality of anchor roof beams 1 in the rockfill body 4, link to each other through anchor rib 2 between anchor roof beam 1 and the let-off groove 3, anchor roof beam 1 includes upper beam 11, lower beam 12 and girder 13, a plurality of upper beam 11 and lower beam 12 have been pour respectively to the upper and lower both sides of girder 13 integratively, upper beam 11 and lower beam 12 stagger along girder 13 beam body and set up, and an anchor rib 2 is connected to the juncture of every upper beam 11 or lower beam 12 and girder 13, anchor rib 2 is I-shaped or C type structure, the both ends of anchor rib 2 set up respectively in anchor roof beam 1 and let-off groove 3 cell bodies.

The anchoring beam 1 is formed by pouring concrete and a reinforcement cage, and the shape of the reinforcement cage is the same as that of the anchoring beam 1. The embodiment further comprises a sleeve 5, the sleeve 5 is coated on the abdomen of the anchor bar 2, and a cement slurry layer is filled in an interlayer between the sleeve 5 and the anchor bar 2. The sleeve 5 is externally provided with a plurality of circles of reinforcing rings 6, the sleeve 5 and the reinforcing rings 6 are both made of metal materials and are connected in a welding mode.

While the present invention has been described in detail with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims (4)

1. The utility model provides a rockfill body anchor structure, includes dam body, anchor roof beam (1), anchor bar (2) and let-off groove (3), let-off groove (3) set up on the dam body, the dam body includes rockfill body (4), set up many anchor roof beams (1) in rockfill body (4), link to each other its characterized in that through anchor bar (2) between anchor roof beam (1) and let-off groove (3): the anchoring beam (1) comprises an upper supporting beam (11), a lower supporting beam (12) and a main beam (13), a plurality of upper supporting beams (11) and lower supporting beams (12) are respectively and integrally poured on the upper side and the lower side of the main beam (13), the upper supporting beams (11) and the lower supporting beams (12) are arranged along the beam body of the main beam (13) in a staggered mode, an anchoring rib (2) is connected to the junction of each upper supporting beam (11) or each lower supporting beam (12) and the main beam (13), each anchoring rib (2) is of an I-shaped or C-shaped structure, and two ends of each anchoring rib (2) are respectively arranged in the groove bodies of the anchoring beam (1) and the discharge groove (3).

2. A rockfill anchoring structure according to claim 1, wherein: the anchoring beam (1) is formed by pouring concrete and a reinforcement cage, and the shape of the reinforcement cage is the same as that of the anchoring beam (1).

3. A rock-fill body anchoring structure according to claim 2, wherein: the anchor bar is characterized by further comprising a sleeve (5), the sleeve (5) is coated on the belly of the anchor bar (2), and a cement slurry layer is filled in an interlayer between the sleeve (5) and the anchor bar (2).

4. A rockfill anchoring structure according to claim 3, wherein: the multi-ring reinforced sleeve is characterized in that a plurality of rings of reinforced rings (6) are arranged outside the sleeve (5), the sleeve (5) and the reinforced rings (6) are all made of metal materials and are connected in a welding mode.

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