A composite anchor structure

Abstract

The present invention provides a composite anchor structure, which includes an anchor member, an anchor foundation and a fastening assembly. The anchor member is installed on the anchor foundation and fixed in position by the fastening assembly installed on the anchor foundation. And a prestressed anchor cable is arranged in the anchor member, and the prestressed anchor cable is used for connecting with an anchor (bridge). The present invention realizes the fixation of the anchor cable by adopting a structure combining a fastening assembly (mountain rock) with concrete, and achieves the tensile force required by the bridge by making full use of the combined force of the surrounding rock mass, effectively reducing the amount of concrete used while ensuring the tensile force on the bridge.

Description

Technical Field

[0001] The present invention relates to the technical field of anchor piers, and particularly relates to a composite anchor pier structure integrating a pile foundation. Background Art

[0002] An anchor pier is a stabilizing structure that generally provides a stable pulling force to other structures through cables connected thereto to ensure the stability of other structures. The stability of the anchor pier mainly needs to consider the anti-slip property and anti-shear effect of the anchor pier structure.

[0003] Currently, the commonly used anchor pier structures include gravity anchor piers. The gravity anchor pier mainly relies on its own weight to bear the load. Its structure is simple, and the safety reserve is relatively high. The requirement for the quality level of the surrounding rock is lower than that of other forms of anchor pier structures such as tunnel-type and rock anchors. Therefore, it has a wide range of applications and has become the preferred anchor pier form for long-span suspension bridges. Its disadvantage is that it has a large size, which may cause economic and resource waste.

[0004] Due to the complexity of the mechanical behavior of rock and soil media, and the current lack of research on the interaction mechanism between the gravity anchor pier and the foundation (in the prior art, a large pit is usually dug in the mountain / ground, and reinforced concrete heavier than the original excavated rock is used to replace the original rock to fix the anchor cable), the current engineering generally simplifies the anchor pier as an independent structure to study the force system balance, and rarely considers the cooperative effect between the anchor pier and the foundation, which does not conform to the actual working state of the anchor pier. Summary of the Invention

[0005] The purpose of the present invention is to provide a composite anchor pier that makes full use of the surrounding rock mass to jointly bear the force to reduce the amount of concrete used in view of the deficiencies of the prior art.

[0006] To achieve the above purpose, the present invention provides a composite anchor pier structure, including an anchor pier member, an anchor pier foundation, and a fastening component. The anchor pier member is installed on the anchor pier foundation, and the connection position between the anchor pier member and the anchor pier foundation is provided with mutually matching tooth structures; the fastening component is installed on the anchor pier foundation and is used to fix the position of the anchor pier member; a prestressed anchor cable connected to the anchor is provided inside the anchor pier member.

[0007] Optionally, a plurality of tooth structures provided on the anchor pier member and the anchor pier foundation are arranged along the acting direction of the prestressed anchor cable.

[0008] Optionally, the anchor pier foundation is provided with a structure that is smaller at the upper end and larger at the lower end.

[0009] Optionally, the anchor pier member and the fastening component are installed on the upper end surface of the anchor pier foundation; the upper end surface of the anchor pier foundation is integrally provided with a concave arc structure.

[0010] Optionally, the material of the anchor pier foundation is concrete.

[0011] Optionally, the fastening assembly is arranged in at least three side directions of the anchorage member and is connected in a contact manner, wherein at least two sides are arranged parallel and opposite to each other, and the two sides are arranged along the acting force direction of the prestressed anchor cable.

[0012] Optionally, the overall structure of the composite anchorage structure is set to be smaller at the upper end and larger at the lower end. At the upper end of the composite anchorage structure, the anchorage member and the fastening assembly cooperate to form a groove.

[0013] Optionally, the groove at the upper end of the composite anchorage structure is backfilled with overlying materials.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The present invention realizes the fixation of the anchor cable by adopting the structure of combining the fastening assembly (mountain rock) with concrete, and achieves the tensile force required for the bridge by making full use of the surrounding rock mass to jointly bear the force, effectively reducing the consumption of concrete and ensuring the tensile force of the bridge at the same time.

[0016] In addition to the purposes, features and advantages described above, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0018] Figure 1 is an isometric schematic view of a composite anchorage structure of the present invention;

[0019] Figure 2 is Figure 1 the isometric schematic view of the anchorage member in

[0020] Figure 3 is Figure 1 the isometric schematic view of the anchorage foundation in

[0021] Wherein:

[0022] 1. Anchorage member, 1.1. First tooth structure, 2. Anchorage foundation, 2.1. Second tooth structure, 3. Fastening assembly. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] To make the above - mentioned objects, features, and advantages of the present invention more clearly understandable, the following will describe in detail the specific embodiments of the present invention with reference to the drawings. It should be noted that the drawings of the present invention are all in simplified forms and use non - precise scales, only for facilitating and clearly assisting in the description of the embodiments of the present invention; the several mentioned in the present invention are not limited to the specific quantities in the drawing examples; the orientations or positional relationships indicated by 'front','middle', 'back', 'left', 'right', 'up', 'down', 'top', 'bottom','middle', etc. in the present invention are all based on the orientations or positional relationships shown in the drawings of the present invention, and do not indicate or imply that the devices or components referred to must have a specific orientation, nor can it be understood as a limitation to the present invention.

[0024] Practical example:

[0025] See Figures 1 to 3 As shown, a composite anchor structure provided by the present invention includes an anchor member 1, an anchor foundation 2, and a fastening assembly 3. The anchor member 1 is installed on the anchor foundation 2 and is fixed in position by the fastening assembly 3 installed on the anchor foundation 2; and a prestressed anchor cable (not marked) is provided inside the anchor member 1, and the prestressed anchor cable (not marked) is used to connect to an anchor (such as a bridge).

[0026] Optionally, a plurality of first tooth structures 1.1 are provided on the surface of the anchor member 1 for connecting to the anchor foundation 2; a plurality of second tooth structures 2.1 for cooperating with the first tooth structures 1.1 are provided on the anchor foundation 2. The size specifications of the first tooth structures 1.1 and the second tooth structures 2.1 are the same, and the first tooth structures 1.1 and the second tooth structures 2.1 are in clearance fit to realize the mutual fixation of the positions of the anchor member 1 and the anchor foundation 2.

[0027] Optionally, to ensure the stability of the anchor member 1 and the anchor foundation 2 when providing tension for the bridge, a plurality of first tooth structures 1.1 and second tooth structures 1.2 are arranged along the acting direction of the prestressed anchor cable (not marked) (see Figure 1 the arrow shown in).

[0028] Optionally, to fixedly clamp the anchor foundation 2 in the mountain or the ground, the anchor foundation 2 has a structure with a smaller upper end and a larger lower end, and the upper end surface of the anchor foundation 2 is larger than the lower end surface of the anchor member 1 for installing the anchor member 1 and the fastening assembly 3.

[0029] Optionally, to ensure the bearing weight of the anchor foundation 2, the anchor foundation 2 is made of concrete.

[0030] Optionally, to realize the surrounding fastening of the fastening assembly 3 to the anchor member 1, the fastening assembly 3 is in contact connection with three of the side surfaces (left side surface, right side surface, and rear side surface) of the anchor member 1.

[0031] Optionally, to make full use of the rock of the mountain body or the earth, the fastening component 3 is preferably made of the mountain rock excavated from the mountain body or the earth for installing the anchor structure, and the size of the fastening component 3 can be set according to actual needs to ensure the stability of the anchor structure.

[0032] Optionally, the composite anchor structure is integrally arranged in a structure with a small upper end and an inner groove and a large lower end. The inner groove is used to backfill overlying materials (such as mountain soil layers) to bury the composite anchor structure in the mountain body or the earth.

[0033] The specific method for implementing the anchor of the bridge by applying the composite anchor structure is as follows:

[0034] Excavate a cavity on the corresponding earth / mountain body of the bridge for placing the composite anchor structure;

[0035] Place the composite anchor structure in the cavity (it should be noted that the tooth structure is set perpendicular to the tension direction of the prestressed anchor cable);

[0036] Connect the prestressed anchor cable to the bridge.

[0037] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A composite anchor structure, characterized in that: It includes an anchor piece, an anchor foundation and a fastening assembly. The anchor piece is installed on the anchor foundation, and the connection position between the anchor piece and the anchor foundation is provided with mutually matching tooth structures; the fastening assembly is installed on the anchor foundation and is used to fix the position of the anchor piece; a prestressed anchor cable connected to an anchor is arranged in the anchor piece; A plurality of tooth structures provided on the anchor piece and the anchor foundation are arranged along the acting force direction of the prestressed anchor cable; the material of the anchor foundation is concrete; The overall structure of this composite anchor structure is set to be smaller at the upper end and larger at the lower end. At the upper end of the composite anchor structure, the anchor piece and the fastening assembly cooperate to form a groove, and the groove at the upper end of the composite anchor structure is backfilled with overlying materials.

2. The composite anchor structure according to claim 1, wherein: The anchor foundation is set to be smaller at the upper end and larger at the lower end.

3. The composite anchor structure according to claim 2, wherein: The anchor piece and the fastening assembly are installed on the upper end surface of the anchor foundation; the upper end surface of the anchor foundation is integrally set to be an inwardly concave arc structure.

4. The composite anchor structure according to claim 1, wherein: The fastening assembly is arranged in at least three side directions of the anchor piece and adopts a contact connection, where at least two sides are arranged parallel and opposite to each other, and these two sides are arranged along the acting force direction of the prestressed anchor cable.

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