Anchoring structure suitable for UHPC structure

Abstract

The invention provides an anchoring structure suitable for a UHPC (Ultra High Performance Concrete) structure. The anchoring structure comprises an anchoring bolt, at least one anchor ring and a plurality of anchor rods, the anchor bolt is provided with a threaded section screw and a smooth round section screw which are connected in sequence, and the threaded section screw is used for installing a nut. The anchor ring is sleeved on the plain round section screw rod; the anchor rods are connected to the peripheral side of the anchor ring in a radial mode. The structure is good in connection performance, good in crack resistance, wide in application range and high in construction precision.

Description

Technical Field

[0001] The present application relates to the field of bridges, and in particular to an anchoring structure suitable for UHPC structures. Background Art

[0002] For traditional anchor bolts, in order to ensure better anchoring performance, longer bolts are usually embedded in concrete, and the friction between the screw and concrete is used to provide anchoring force. However, for UHPC (ultra-high performance concrete) structures that are gradually being used in large quantities, due to the lightweight design concept brought about by its good material properties, the thickness of the UHPC structure is greatly reduced compared to the reinforced concrete structure. In many cases, the thickness of the UHPC structure cannot meet the anchoring depth requirements, or as the anchoring depth decreases, cracking and shearing damage are very likely to occur in the concrete structure around the anchor bolts. Summary of the invention

[0003] One of the purposes of the present application is to provide an anchoring structure suitable for a UHPC structure, which can ensure good anchoring performance with the UHPC and can effectively prevent local cracking of the UHPC around the anchoring structure.

[0004] The technical solution of this application is:

[0005] An anchoring structure suitable for UHPC structure, comprising an anchor bolt, at least one anchor ring and a plurality of anchor rods; the anchor bolt comprises a threaded section screw rod and a smooth circular section screw rod connected in sequence, the threaded section screw rod is used to install a nut; the anchor ring is sleeved on the smooth circular section screw rod; the plurality of anchor rods are respectively radially connected to the outer peripheral side of the anchor ring.

[0006] As a technical solution of the present application, the anchor rings include two, and the two anchor rings are respectively sleeved on the two ends of the light circular segment screw.

[0007] As a technical solution of the present application, the number of the anchor rods is 4 to 8.

[0008] As a technical solution of the present application, the angle between the anchor rod and the anchor bolt is 30 to 60 degrees.

[0009] As a technical solution of the present application, a plurality of spherical protrusions are arranged at intervals on the anchor rod.

[0010] As a technical solution of the present application, the diameter of the anchor rod is less than or equal to the thickness of the anchor ring.

[0011] As a technical solution of the present application, the anchor bolt is coaxially arranged with the anchor ring.

[0012] As a technical solution of the present application, an included angle is provided between the anchor bolt and the smooth-section screw rod.

[0013] As a technical solution of the present application, it further includes a positioning plate, on which a plurality of threaded holes are provided, and the threaded-section screw rod is connected to the threaded holes.

[0014] Advantages of the present application:

[0015] The anchoring structure applicable to the UHPC structure of the present application has a plurality of anchor bolts distributed radially. Therefore, it can maximize the frictional resistance and mechanical biting force between the anchor bolts and the surrounding UHPC, thereby ensuring good connection performance between the anchor bolts and the UHPC. At the same time, due to the plurality of anchor bolts distributed radially and densely arranged around the anchor bolts, it can not only improve the load-bearing effect of the anchor bolts, but also improve the crack resistance and bearing capacity of the local UHPC around the anchor bolts. In addition, since the anchoring force of the anchor bolts is mainly provided by a plurality of radially arranged anchor bolts, the length of the anchor bolts can be minimized to reduce the requirement for the structural thickness of the UHPC structure, improve the application range of the anchor bolts, and have a wide application range. Description of the drawings

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, so they should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 Schematic installation diagram of the anchoring structure applicable to the UHPC structure provided by the embodiment of the present application;

[0018] Figure 2 Schematic diagram of the anchoring structure applicable to the UHPC structure provided by the embodiment of the present application;

[0019] Figure 3 Schematic diagram of the anchor bolt provided by the embodiment of the present application;

[0020] Figure 4 Schematic diagram of the anchor bolt provided by the embodiment of the present application.

[0021] Reference numerals: 1 - anchor bolt; 2 - anchor ring; 3 - anchor bolt; 4 - threaded-section screw rod; 5 - smooth-section screw rod; 6 - nut; 7 - positioning plate; 8 - UHPC structure; 9 - spherical protrusion. Detailed implementation manners

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. Apparently, the described embodiments are some, but not all, of the embodiments of this application. Components of the embodiments of this application generally described and illustrated in the figures herein can be arranged and designed in a variety of different configurations.

[0023] Therefore, the detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of this application that is claimed, but is merely representative of selected embodiments of this application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of this application without creative efforts fall within the scope of protection of this application.

[0024] It should be noted that like reference numerals and letters denote like items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] In the description of this application, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the inventive product is customarily placed during use. It is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0026] In addition, in this application, unless otherwise clearly specified and limited, the first feature being above or below the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being above, over, and on the second feature includes the first feature being above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being below, under, and beneath the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0027] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or pendant, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but may be slightly inclined.

[0028] In the description of the present application, it should also be noted that unless otherwise clearly specified and limited, the terms "arranged", "connected", and "joined" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0029] Embodiment:

[0030] Please refer to Figure 1 , in conjunction with reference to Figures 2 to 4 , the present application provides an anchoring structure applicable to UHPC structures, which mainly includes a positioning plate 7, an anchor bolt 1, two anchor rings 2, and a plurality of anchor rods 3; wherein, the anchor bolt 1 has a threaded section screw rod 4 and a smooth round section screw rod 5 connected in sequence, and the threaded section screw rod 4 is used for installing a nut 6; a plurality of threaded holes are formed on the positioning plate 7, and the threaded section screw rod 4 is connected to the threaded holes; at the same time, the two anchor rings 2 are respectively sleeved at both ends of the smooth round section screw rod 5; in addition, the plurality of anchor rods 3 are respectively connected to the outer peripheral side of the anchor ring 2 in a radial manner. The anchoring structure applicable to UHPC structures has the characteristics of good connection performance, good crack resistance, wide application range, and high construction accuracy.

[0031] It should be noted that the number of the anchor rods 3 is 4 to 8. And, the included angle between the anchor rod 3 and the anchor bolt 1 is 30 to 60 degrees. In addition, a plurality of spherical protrusions 9 are arranged at intervals on the anchor rod 3, which can further enhance the frictional resistance and mechanical biting force between the anchor bolt 1 and the surrounding UHPC, so as to ensure good connection performance between the anchor bolt 1 and the UHPC. At the same time, the diameter of the anchor rod 3 is less than or equal to the thickness of the anchor ring 2.

[0032] It should be noted that in this embodiment, the distance between two adjacent anchor rods 3 on the same anchor ring 2 can be the same or different; and, the anchor ring 2 is a ring structure. In other embodiments, the distance between two adjacent anchor rods 3 can also be different, and it is adaptively designed according to actual usage requirements.

[0033] It should be noted that in this embodiment, the anchor bolt 1 and the anchor ring 2 are coaxially arranged. And, the anchor rod 3 and the smooth round section screw rod 5 are arranged at an included angle.

[0034] The construction method of the anchoring structure applicable to UHPC structures is as follows:

[0035] S1, according to the design requirements of the thickness of the UHPC structure 8 and the bolt bearing capacity, select an anchor bolt 1 with a suitable specification;

[0036] S2. Pour the UHPC structure 8, vibrate it thoroughly and level the surface.

[0037] S3. First, install the anchor bolts 1 and nuts 6 on the positioning plate 7, and then press the smooth round section screw rod 5 of the anchor bolt 1 into the fluidized UHPC.

[0038] S4. Vigorously vibrate the UHPC near the anchor bolt 1 to ensure full contact between the UHPC and the anchor bolt 1.

[0039] S5. Cure the UHPC. After reaching the design strength, loosen the nut 6 and remove the positioning plate 7.

[0040] In summary, for the anchoring structure applicable to the UHPC structure of the present application, since it has multiple radially distributed anchor rods 3, it can maximize the frictional resistance and mechanical biting force between the anchor bolt 1 and the surrounding UHPC, thereby ensuring good connection performance between the anchor bolt 1 and the UHPC. At the same time, due to the multiple radially distributed anchor rods 3 densely arranged around the anchor bolt 1, it can not only improve the load-bearing capacity of the anchor bolt 1, but also improve the crack resistance and load-bearing capacity of the local UHPC around the anchor bolt 1. In addition, since the anchoring force of the anchor bolt 1 is mainly provided by multiple radially arranged anchor rods 3, the length of the anchor bolt 1 can be minimized to reduce the requirement for the structural thickness of the UHPC structure 8, expand the application range of the anchor bolt 1, and have a wide application range. Due to the presence of the positioning plate 7, it can ensure the spacing and perpendicularity between adjacent anchor bolts 1, and further improve the construction accuracy of the anchor bolt 1.

[0041] The above are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An anchoring structure applicable to UHPC structures, characterized in that, It includes an anchor bolt, at least one anchor ring and a plurality of anchor rods; the anchor bolt has a threaded section screw rod and a smooth round section screw rod connected in sequence, and the threaded section screw rod is used for installing a nut; the anchor ring is sleeved on the smooth round section screw rod; the plurality of anchor rods are respectively connected to the outer peripheral side of the anchor ring in a radial manner.

2. The anchoring structure applicable to the UHPC structure according to claim 1, characterized in that, There are two anchor rings, and the two anchor rings are respectively sleeved at both ends of the smooth round section screw rod.

3. The anchoring structure applicable to the UHPC structure according to claim 1, characterized in that, The number of the anchor rods is 4 to 8.

4. The anchoring structure applicable to the UHPC structure according to claim 1, characterized in that, The included angle between the anchor rod and the anchor bolt is 30 to 60 degrees.

5. The anchoring structure applicable to the UHPC structure according to claim 1, characterized in that, A plurality of spherical protrusions are arranged at intervals on the anchor rod.

6. The anchoring structure applicable to the UHPC structure according to claim 1, characterized in that, The diameter of the anchor rod is less than or equal to the thickness of the anchor ring.

7. The anchoring structure applicable to the UHPC structure according to claim 1, characterized in that, The anchor bolt and the anchor ring are coaxially arranged.

8. The anchoring structure applicable to the UHPC structure according to claim 1, characterized in that The anchor rod and the smooth round section screw rod are arranged at an included angle.

9. The anchoring structure applicable to the UHPC structure according to claim 1, characterized in that, It further includes a positioning plate, and a plurality of threaded holes are formed in the positioning plate, and the threaded section screw rod is connected to the threaded holes.

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