CN219490972U - Nuclear power conventional island is with expanding first anti-floating anchor - Google Patents

Abstract

The utility model relates to the field of nuclear power buildings, in particular to an enlarged head anti-floating anchor rod for a conventional island of nuclear power, which is arranged on a rock base and a foundation slab and comprises a rod body and an anchor plate, wherein the rod body is arranged in an anchor rod pore canal of the rock base, the anchor plate is formed at a first end of the rod body, which is placed into the rock base, and the anchor plate forms an expanding surface in the radial direction of the rod body. The technical problem that the full-length cohesive anti-floating anchor rod in the prior art is easy to cause cracks in the anchor rod pore canal of the rock base is solved.

Description

Nuclear power conventional island is with expanding first anti-floating anchor

Technical Field

The utility model relates to the field of nuclear power buildings, in particular to an enlarged head anti-floating anchor rod for a nuclear power conventional island.

Background

The nuclear power conventional island structure has the unique characteristics, and the underground part is huge due to the reasons of earthquake proofing and nuclear leakage prevention. The conventional island is adjacent to the nuclear island, and due to the deep burying of the circulating water pipe, the underground rock-based structure is often very deep, the conventional island foundation slab structure above the ground cannot resist the buoyancy generated by the deep pit, and an anti-floating anchor rod is required to be arranged. The nuclear power design life often exceeds that of a conventional civil building, taking a Hua-Dragon-one machine set in China as an example, the anti-floating grade is first-class, the design service life is 60 years, and high requirements are set for the durability of the anchor rod, so that high requirements for the crack resistance of the anchor rod are set. If the cracks of the anchor rod pore canal are to be controlled, the conventional full-length bonding anti-floating anchor rod cannot meet the requirement that the conventional full-length bonding anti-floating anchor rod does not generate cracks at all; because of the existence of the anchor, the prestressed anchor rod must reserve a stretching pore canal, and the stretching pore canal penetrates through the bottom plate structural layer to generate a water leakage risk point, so that the operation requirement cannot be met.

Disclosure of Invention

In order to solve the technical problem that full-length cohesive anti-floating anchors in the prior art are easy to cause cracks in anchor rod pore canals of rock bases, the application provides an enlarged head anti-floating anchor for a nuclear power conventional island, and the technical problem is solved.

The technical scheme adopted for solving the technical problems is as follows:

the utility model provides an enlarged head anti-floating anchor rod for a nuclear power conventional island, which is arranged on a rock foundation and a foundation slab and comprises the following components: the rod body is arranged in the anchor rod pore canal of the rock matrix; the anchoring plate is formed at the first end of the rod body, which is placed into the rock matrix, and the anchoring plate forms an unfolding surface in the radial direction of the rod body.

The utility model provides a nuclear power conventional island is with expanding first anti anchor rod that floats is formed with the anchor board of expansion face on the first end that the rock matrix was put into to the body of rod, and when groundwater come-up, the anchor board becomes preferential stress point, passes through the anchor board transmission when buoyancy is transmitted, reduces the pulling force that the cohesive force of body of rod itself produced grouting material in the pore. The length of the enlarged footing anti-floating anchor rod for the nuclear power conventional island is equal to that of the full-length cohesive anti-floating anchor rod in the prior art, the anti-floating force generated through integral stabilization is equal to that of the full-length cohesive anti-floating anchor rod in the prior art, but the distribution of the anti-floating force is changed, the anchoring plate at the first end of the rod body is mainly concentrated, the tensile stress in the whole anchor rod pore canal is reduced, and accordingly the pore canal internal cracks cannot be generated. Thereby solving the technical problem that the full-length cohesive anti-floating anchor rod in the prior art is easy to cause cracks in the anchor rod pore canal of the rock base.

Further, the rod body is a threaded rod.

Further, the anchoring plate is a flat plate made of metal.

Further, a plurality of reinforcing ribs are arranged between the anchoring plate and the rod body.

Further, the second end of the rod body extends into the foundation slab, and the end part of the second end of the rod body is provided with an anchoring head which is fixedly connected with the foundation slab.

Further, the anchoring head is connected with the rod body in a welding mode.

Further, the anchoring head is an anchor plate or an anchor bolt.

Furthermore, the anchoring head and the foundation slab adopt a full-field anchoring connection mode.

Further, grouting material is arranged in the anchor rod pore canal so as to fill gaps between the rod body and the inner wall of the rock matrix.

Based on the technical scheme, the utility model has the following technical effects:

the utility model provides a nuclear power conventional island is with expanding first anti anchor rod that floats is formed with the anchor board on the first end that the rock matrix was put into to the body of rod, and when groundwater come-up, the anchor board becomes preferential stress point, transmits through the anchor board during buoyancy transmission, reduces the pulling force that the cohesive force of body of rod itself produced grouting material in the pore. The length of the enlarged footing anti-floating anchor rod for the nuclear power conventional island is equal to that of the full-length cohesive anti-floating anchor rod in the prior art, the anti-floating force generated through integral stabilization is equal to that of the full-length cohesive anti-floating anchor rod in the prior art, but the distribution of the anti-floating force is changed, the anchoring plate at the first end of the rod body is mainly concentrated, the tensile stress in the whole anchor rod pore canal is reduced, and accordingly the pore canal internal cracks cannot be generated. Thereby solving the technical problem that the full-length cohesive anti-floating anchor rod in the prior art is easy to cause cracks in the anchor rod pore canal of the rock base.

Drawings

FIG. 1 is a schematic view of an enlarged head anti-floating anchor for a nuclear power conventional island.

Wherein: a-a rock matrix and a 1-anchor rod pore canal; b-a base plate; 1-a rod body; 2-an anchor plate; 3-reinforcing ribs; 4-anchoring head.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present utility model; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present utility model.

The underground part of the nuclear power conventional island structure is very large and buried deeply, and an anti-floating anchor rod is required to be arranged. The nuclear reactor floats the grade for one grade, and design life is long, has set forth very high requirement to the durability of stock, does not allow the crack to produce in principle. If the cracks of the anchor rod pore canal are to be controlled, the buoyancy resistance of the conventional full-length bonding type anti-floating anchor rod is uniformly transferred to grouting materials through the anchor rod, the grouting materials are cement-based materials, the tensile strength is poor, and the requirement of not generating cracks cannot be met. If a prestressed anchor rod is adopted, an anchor device exists, a stretching pore canal must be reserved, the stretching pore canal penetrates through a bottom plate structural layer, a water leakage risk point is generated, and stress relaxation can be generated due to long service life, so that the operation requirement cannot be met.

As shown in fig. 1, the application provides an enlarged head anti-floating anchor rod for a nuclear power conventional island, which is configured on a rock foundation a and a foundation slab b and comprises a rod body 1 and an anchor plate 2, wherein the rod body 1 is arranged in an anchor rod hole channel a1 of the rock foundation a, the anchor plate 2 is formed at a first end of the rod body 1, which is placed into the rock foundation a, and the anchor plate 2 forms an unfolding surface in the radial direction of the rod body 1.

The utility model provides an anti stock that floats of enlarged footing for nuclear power conventional island is formed with the anchor board 2 of expansion face on the first end of rock matrix a is put into at body of rod 1, and when groundwater come-up, anchor board 2 becomes preferential stress point, passes through anchor board 2 transmission when buoyancy is transmitted, reduces the pulling force that the cohesive force of body of rod 1 itself produced to the grout material in the pore. The length of the enlarged footing anti-floating anchor rod for the nuclear power conventional island is equal to that of the full-length cohesive anti-floating anchor rod in the prior art, the anti-floating force generated through integral stabilization is equal to that of the full-length cohesive anti-floating anchor rod in the prior art, but the distribution of the anti-floating force is changed, the anchoring plate 2 at the first end of the rod body 1 is mainly concentrated, the tensile stress in the whole anchor rod pore channel a1 is reduced, and accordingly, the crack in the pore channel cannot be generated. Thereby solving the technical problem that the full-length cohesive anti-floating anchor rod in the prior art is easy to cause the anchor rod duct a1 of the rock foundation a to generate cracks.

In a preferred embodiment of the utility model, the rod 1 is a threaded rod.

In a preferred embodiment of the utility model, the anchorage plate 2 is a flat plate made of metal.

In a preferred embodiment of the present utility model, a plurality of reinforcing ribs 3 are further provided between the anchor plate 2 and the rod body 1 to enhance structural strength.

In a preferred embodiment of the utility model, the second end of the rod 1 extends into the base plate b, and the second end of the rod 1 is provided with an anchor head 4 forming a fixed connection with the base plate b.

In an alternative embodiment of the utility model, the anchoring head 4 is connected to the rod body 1 by means of welding.

In an alternative embodiment of the utility model, the anchoring head 4 is an anchor plate or anchor bolt.

In an alternative embodiment of the utility model, the anchoring head 4 is connected to the base plate b by means of full-field anchoring.

In a preferred embodiment of the utility model, grouting material is arranged in the anchor shaft channel a1 to fill the gap between the rod body 1 and the inner wall of the rock matrix a.

It should be understood that the above-described specific embodiments are only for explaining the present utility model and are not intended to limit the present utility model. Obvious variations or modifications which extend from the spirit of the present utility model are within the scope of the present utility model.

Claims (9)

1. An enlarged footing anti-floating anchor for a nuclear power conventional island, which is configured on a rock foundation (a) and a foundation slab (b), and is characterized by comprising the following components:

the rock base comprises a rod body (1), wherein the rod body (1) is arranged in an anchor rod pore canal (a 1) of a rock base (a);

an anchor plate (2), the anchor plate (2) is formed at a first end of the rod body (1) where the rock matrix (a) is placed, and the anchor plate (2) forms an expanding surface in the radial direction of the rod body (1).

2. The enlarged head anti-floating anchor for a nuclear power conventional island according to claim 1, wherein the rod body (1) is a threaded rod.

3. The enlarged head anti-floating anchor for nuclear power conventional islands according to claim 1, wherein the anchor plate (2) is a flat metal plate.

4. An enlarged footing anti-floating anchor for a nuclear power conventional island as defined in claim 3, wherein a plurality of reinforcing ribs (3) are further disposed between said anchor plate (2) and said rod body (1).

5. The enlarged footing anti-floating anchor for a nuclear power conventional island of claim 1, wherein the second end of the rod body (1) extends into the base plate (b), and the second end of the rod body (1) is provided with an anchor footing (4) forming a fixed connection with the base plate (b).

6. Enlarged head anti-floating anchor for nuclear power conventional islands according to claim 5, characterized in that the anchor head (4) is connected with the rod body (1) by means of welding.

7. The enlarged footing anti-floating anchor for nuclear power conventional islands of claim 5 wherein said anchor head (4) is an anchor plate or anchor bolt.

8. The enlarged footing anti-floating anchor for nuclear power conventional island of claim 5 wherein said anchor head (4) is connected to the base plate (b) by full-field anchoring.

9. The enlarged footing anti-floating anchor for nuclear power conventional islands of claim 1, wherein grouting material is disposed in the anchor shaft channel (a 1) to fill a gap between the rod body (1) and the inner wall of the rock matrix (a).