Prestressed anchor bolt installation structure and installation method

Abstract

The present invention provides a prestressed anchor bolt installation structure and installation method. A first through hole is set on the lower anchor plate, and then a threaded sleeve is installed on the lower anchor plate through a bottom bolt. The threaded sleeve can also be connected to the anchor bolt. Through the above-mentioned setting method, while realizing the installation operation of the anchor bolt, it can also avoid the damage to the lower anchor plate caused by connecting the anchor bolt on the lower anchor plate by welding in the prior art, and then the adverse effects on the overall structure. At the same time, by setting the threaded sleeve, it is possible to prevent concrete from entering the first through hole of the lower anchor plate, so that the gap does not need to be sealed when pouring concrete. More importantly, since the threaded sleeve will completely enter the concrete after the pouring is completed, the bottom bolt will be as strong as the anchor bolt, thereby ensuring that the broken position of the anchor bolt is inside or above the threaded sleeve, which is conducive to replacing the anchor bolt.

Description

Technical Field

[0001] The invention relates to the technical field of engineering construction, and in particular to a prestressed anchor bolt installation structure and an installation method. Background Art

[0002] The anchor bolt structure is widely used in the field of engineering construction. By setting anchor bolts during the construction process, the connection strength can be effectively improved.

[0003] Prestressed anchor bolts are usually installed on the foundation of wind power and other platforms. The lower part of the prestressed anchor bolts is sunk to the bottom of the foundation, and the upper part is exposed to the outside through the concrete of the foundation. In the prior art, the strength of the anchor bolts themselves is relatively high, and generally they will not break. However, if they do break, their replacement will be very complicated. Generally speaking, in order to fish out the anchor bolts that are broken in the foundation, it is necessary to pry open the concrete at the top of the foundation, and then use an electric spark machine to suck out the broken anchor bolt head, and then reinstall the anchor bolt. The above-mentioned operation process costs much more than building a new foundation.

[0004] In order to solve the above problems, Figure 1 As shown, in the prior art, bolts are usually arranged on the lower anchor plate, and through holes are formed on the lower anchor plate, and the anchor bolts are connected to the bolts through the through holes, so as to realize the installation operation. However, the above operation has the following problems: first, the bolt b itself needs to be welded on the lower anchor plate, and the welding operation will have an adverse effect on the lower anchor plate, which will cause structural safety hazards under long-term cyclic loads; second, when the anchor bolt passes through the through hole, a gap a is formed between the outer wall of the anchor bolt and the inner wall of the through hole. During the concrete pouring process, concrete will enter the gap a, which will not meet the construction requirements. Summary of the invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defect of the prior art that potential safety hazards are prone to occur during the installation of anchor bolts.

[0006] To this end, the present invention provides a prestressed anchor bolt installation structure, including: a lower anchor plate, on which a plurality of first through holes are provided; an upper anchor plate, which is arranged corresponding to the lower anchor plate, and the upper anchor plate is correspondingly provided with a plurality of second through holes; a plurality of bottom bolts are correspondingly penetrated at the first through holes; a threaded sleeve, on which a first threaded portion and a second threaded portion are relatively arranged, which is arranged on one side of the lower anchor plate, and the bottom bolt is connected to the first threaded portion through the first through hole; a plurality of anchor bolts, whose two ends are respectively arranged corresponding to the first through hole and the second through hole, and the portions of the anchor bolts corresponding to the second threaded portion are provided with external threads, and the anchor bolts are connected to the threaded sleeve through the external threads; an anchor sleeve, which is penetrated at the outside of the anchor bolt and is located between the upper anchor plate and the lower anchor plate, and the anchor sleeve acts on the threaded sleeve.

[0007] In the prestressed anchor bolt installation structure provided by the present invention, the lower anchor plate and the upper anchor plate are arranged in a ring shape, and a plurality of the anchor bolts are arranged in a circumferential shape.

[0008] The prestressed anchor bolt installation structure provided by the present invention further includes: a bottom flange, a through hole is provided at the position of the bottom flange corresponding to the second through hole, the anchor bolt enters the through hole through the second through hole, and a connecting nut is provided at one end of the anchor bolt protruding from the through hole.

[0009] The prestressed anchor bolt installation structure provided by the present invention comprises a protective cap disposed on the anchor bolt.

[0010] The prestressed anchor bolt installation structure provided by the present invention has an upper nut arranged below the upper anchor plate, a thread connected to the upper nut arranged on the anchor bolt, the anchor bolt enters the upper anchor plate through the upper nut, and the top of the anchor bolt sleeve rests on the upper nut.

[0011] The prestressed anchor bolt installation structure provided by the present invention comprises: a sleeve body, which is arranged in a barrel shape; a plate body, which is arranged inside the sleeve body, wherein the sleeve body is provided with a first threaded portion on one side of the plate body and a second threaded portion on the other side.

[0012] The prestressed anchor bolt installation structure provided by the present invention further includes: a temporary support structure, which is arranged below the lower anchor plate, and the temporary support structure is detachably connected to the lower anchor plate.

[0013] The present invention provides a method for installing a prestressed anchor bolt, comprising the following steps: installing a threaded sleeve and a bottom bolt on a lower anchor plate, so that the bottom bolt is connected to one end of the threaded sleeve through the lower anchor plate; connecting one end of the anchor bolt to the upper anchor plate, and the other end to the other end of the threaded sleeve to form an anchor bolt frame; pouring concrete on the anchor bolt frame, and pouring the concrete to a position below the upper anchor plate.

[0014] The prestressed anchor bolt installation method also includes: when the anchor bolt is broken, the anchor bolt located at the upper part is taken out, and then the remaining anchor bolt head is removed from the threaded sleeve by a spark machine, and the complete anchor bolt is installed on the threaded sleeve.

[0015] The technical solution of the present invention has the following advantages:

[0016] 1. The prestressed anchor bolt installation structure provided by the present invention comprises: a lower anchor plate, on which a plurality of first through holes are provided; an upper anchor plate, which is arranged corresponding to the lower anchor plate, and the upper anchor plate is correspondingly provided with a plurality of second through holes; a plurality of bottom bolts are correspondingly penetrated at the first through holes; a threaded sleeve, on which a first threaded portion and a second threaded portion are relatively arranged, which are arranged on one side of the lower anchor plate, and the bottom bolt is connected to the first threaded portion through the first through hole; a plurality of anchor bolts, whose two ends are respectively arranged corresponding to the first through hole and the second through hole, and the portion of the anchor bolt corresponding to the second threaded portion is provided with an external thread, and the anchor bolt is connected to the threaded sleeve through the external thread; an anchor bolt sleeve, which is penetrated at the outside of the anchor bolt and is located between the upper anchor plate and the lower anchor plate, and the anchor bolt sleeve acts on the threaded sleeve.

[0017] In the present invention, a first through hole is provided on the lower anchor plate, and then a threaded sleeve is installed on the lower anchor plate through a bottom bolt. The threaded sleeve can also be connected to the anchor bolt at the same time. Through the above-mentioned arrangement, while realizing the installation operation of the anchor bolt, it can also avoid the damage to the lower anchor plate caused by connecting the anchor bolt on the lower anchor plate by welding in the prior art, thereby avoiding the adverse effects on the overall structure.

[0018] At the same time, by providing the threaded sleeve, it is possible to prevent concrete from entering the first through hole of the lower anchor plate, thereby eliminating the need to seal the gap when pouring concrete.

[0019] More importantly, since the threaded sleeve will completely enter the concrete after pouring, the bottom bolt will be as strong as the anchor bolt, thereby ensuring that the anchor bolt breakage position is inside or above the threaded sleeve, which is conducive to replacing the anchor bolt.

[0020] 2. The present invention provides a method for installing a prestressed anchor bolt, comprising the following steps: installing a threaded sleeve and a bottom bolt on a lower anchor plate, so that the bottom bolt is connected to one end of the threaded sleeve through the lower anchor plate; connecting one end of the anchor bolt to the upper anchor plate, and the other end to the other end of the threaded sleeve to form an anchor bolt frame; pouring concrete on the anchor bolt frame, pouring the concrete to a position below the upper anchor plate, and when the anchor bolt breaks, taking out the anchor bolt located at the upper part, then removing the remaining anchor bolt head from the threaded sleeve through a spark machine, and installing the complete anchor bolt on the threaded sleeve.

[0021] In the present invention, once the anchor bolt breaks, the upper broken anchor bolt is first taken out, and then the lower broken anchor bolt is removed from the threaded sleeve by a spark machine. Since the threaded sleeve itself has been fixed to the lower anchor plate by the bottom bolt, after the broken anchor bolt is removed from the threaded sleeve, a new anchor bolt can be directly installed on the threaded sleeve.

[0022] The installation method provided in the present application can realize the installation operation of the anchor bolt while avoiding the damage to the lower anchor plate caused by connecting the anchor bolt to the lower anchor plate by welding in the prior art, thereby avoiding the adverse effects on the overall structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a schematic diagram of the prestressed anchor bolt installation structure provided in the background technology of the present invention;

[0025] Figure 2 A schematic diagram of a prestressed anchor bolt installation structure provided by the present invention;

[0026] Description of reference numerals:

[0027] 1. Lower anchor plate; 2. Upper anchor plate; 3. Bottom bolt; 4. Threaded sleeve; 41. First threaded portion; 42. Second threaded portion; 43. Plate body; 5. Anchor bolt; 6. Anchor bolt sleeve; 7. Bottom flange; 8. Protective cap; 9. Upper nut; 10. Temporary support structure; 11. Connecting nut;

[0028] a. Gap; b. Bolt. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0033] Example 1

[0034] This embodiment provides a prestressed anchor bolt installation structure, such as Figure 2 As shown, including:

[0035] A lower anchor plate 1, on which a plurality of first through holes are provided;

[0036] An upper anchor plate 2 is provided corresponding to the lower anchor plate, and a plurality of second through holes are provided on the upper anchor plate 2;

[0037] Specifically, the upper anchor plate 2 and the lower anchor plate 1 extend in the horizontal direction, thereby playing a stabilizing role in the concrete. At the same time, the upper anchor plate 2 and the lower anchor plate 1 are respectively made of technical materials, such as steel. The shapes of the first through hole and the second through hole are not limited, and their function is to achieve the connection action. In this embodiment, Figure 2 As shown, the first through hole is arranged below the second through hole, and the first through hole and the second through hole are arranged opposite to each other.

[0038] A plurality of bottom bolts 3, correspondingly penetrated at the first through holes;

[0039] A threaded sleeve 4, on which a first threaded portion 41 and a second threaded portion 42 are arranged opposite to each other, is arranged on one side of the lower anchor plate 1, and the bottom bolt 3 is connected to the first threaded portion 41 through the first through hole;

[0040] In this embodiment, Figure 1 As shown, the top bolt is installed from bottom to top. The first threaded portion 41 is arranged below the second threaded portion 42, and threads are arranged in both the first threaded portion 41 and the second threaded portion 42, and the direction of rotation of the threads is not limited as long as the connection action can be achieved.

[0041] Specifically, the threaded sleeve 4 itself is barrel-shaped, and its lower end is against the upper surface of the lower anchor plate 1. As the installation depth of the bottom bolt 3 in the first threaded portion 41 increases, the threaded sleeve 4 itself squeezes the lower anchor plate 1 gradually increases.

[0042] A plurality of anchor bolts 5, with two ends respectively corresponding to the first through hole and the second through hole, the anchor bolts 5 are provided with external threads at the positions corresponding to the second threaded portion 42, and the anchor bolts 5 are connected to the threaded sleeve 4 through the external threads;

[0043] By providing the external thread, the connection operation between the anchor bolt 5, the threaded sleeve 4 and the lower anchor plate 1 is realized. Specifically, the depth of the anchor bolt 5 penetrating into the second threaded portion 42 is not limited, as long as the connection action can be realized.

[0044] The anchor sleeve 6 is passed through the outside of the anchor 5 and is located between the upper anchor plate 2 and the lower anchor plate 1 . The anchor sleeve 6 acts on the threaded sleeve 4 .

[0045] In this embodiment, the inner diameter of the anchor sleeve 6 is larger than the outer diameter of the anchor 5. When the anchor sleeve 6 enters the outer side of the anchor 5, a certain gap is formed between the anchor sleeve 6 and the anchor 5. Specifically, the anchor sleeve 6 is made of metal material, such as steel.

[0046] In the prestressed anchor bolt installation structure provided in this embodiment, the lower anchor plate 1 and the upper anchor plate 2 are arranged in a ring shape, and the plurality of anchor bolts 5 are arranged in a circumferential shape.

[0047] Specifically, a plurality of the anchor bolts 5 are evenly arranged on the lower anchor plate 1, and an anchor bolt 5 cage can be formed through the upper anchor plate 2, the lower anchor plate 1 and the anchor bolts 5, thereby facilitating subsequent installation operations.

[0048] The prestressed anchor bolt installation structure provided in this embodiment is as follows: Figure 2 As shown, it also includes: a bottom flange 7, which is arranged at an upper position of the upper anchor plate 2, and a through hole is arranged at a position of the bottom flange 7 corresponding to the second through hole, and the anchor bolt 5 enters the through hole through the second through hole, and a connecting nut 11 is arranged at one end of the anchor bolt 5 protruding from the through hole.

[0049] After the assembly is completed, the bottom flange 7 will be arranged in the area between the connecting nut 11 and the upper anchor plate 2, thereby completing the installation action.

[0050] Furthermore, after the installation of the connecting nut 11 is completed, a protective cap 8 is provided on the anchor bolt 5. Figure 2 As shown, the protective cap 8 is arranged at the top of the anchor bolt 5. Specifically, the protective cap 8 itself is made of plastic material, so as to prevent sewage, rainwater, etc. from directly flowing to the position of the connecting nut 11.

[0051] The prestressed anchor bolt installation structure provided in this embodiment has an upper nut 9 provided below the upper anchor plate 2, and a thread connected to the upper nut 9 is provided on the anchor bolt 5. The anchor bolt 5 enters the upper anchor plate 2 through the upper nut 9, and the top of the anchor bolt sleeve 6 rests on the upper nut 9.

[0052] By providing the upper nut 9, the upper anchor plate 2 and the bottom flange 7 can be stabilized between the upper nut 9 and the connecting nut 11, thereby improving the installation stability of the entire structure.

[0053] The prestressed anchor bolt installation structure provided in this embodiment, the anchor bolt sleeve 6 includes: a sleeve body, which is arranged in a barrel shape; a plate body 43, which is arranged inside the sleeve body, and a first threaded portion 41 is arranged on one side of the plate body 43 in the sleeve body, and a second threaded portion 42 is arranged on the other side.

[0054] Specifically, the plate body 43 itself is arranged horizontally. By arranging the plate body 43 , the sleeve body is divided into two different parts. The first threaded portion 41 is arranged on one side of the plate body 43 , and the second threaded portion 42 is arranged on the other side of the plate body 43 .

[0055] Meanwhile, the rotation directions of the first threaded portion 41 and the second threaded portion 42 are not limited, as long as the connection action can be achieved.

[0056] The prestressed anchor bolt installation structure provided in this embodiment further includes: a temporary support structure 10, which is arranged below the lower anchor plate 1, and the temporary support structure 10 is detachably connected to the lower anchor plate 1.

[0057] Example 2

[0058] This embodiment provides a method for installing a prestressed anchor bolt, comprising the following steps:

[0059] Install the threaded sleeve 4 and the bottom bolt 3 on the lower anchor plate 1, so that the bottom bolt 3 is connected to one end of the threaded sleeve 4 through the lower anchor plate 1;

[0060] Connect one end of the anchor bolt 5 to the upper anchor plate 2, and the other end to the other end of the threaded sleeve 4 to form an anchor bolt 5 frame;

[0061] Concrete is poured on the anchor bolt 5 frame, and the concrete is poured to the position below the upper anchor plate 2.

[0062] When the anchor bolt 5 is broken, the anchor bolt 5 located at the upper part is taken out, and then the remaining anchor bolt 5 head is removed from the threaded sleeve 4 by a spark machine, and the complete anchor bolt is installed on the threaded sleeve 4.

[0063] After the concrete pouring is completed, Figure 2As shown, the position of the concrete will extend to below the upper anchor plate 2.

[0064] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A prestressed anchor bolt installation method, applied to a prestressed anchor bolt installation structure, characterized in that: The steps include: Installing a threaded sleeve and a bottom bolt on the lower anchor plate, so that the bottom bolt is connected to one end of the threaded sleeve through the lower anchor plate; Connect one end of the anchor bolt to the upper anchor plate, and the other end to the other end of the threaded sleeve to form an anchor bolt frame; Concrete is poured on the anchor bolt frame to a position below the upper anchor plate; Also includes: When the anchor bolt breaks, the anchor bolt at the upper part is taken out, and then the remaining anchor bolt head is removed from the threaded sleeve by a spark machine, and the complete anchor bolt is installed on the threaded sleeve; The prestressed anchor bolt installation structure comprises: A lower anchor plate, on which a plurality of first through holes are provided; An upper anchor plate, arranged corresponding to the lower anchor plate, and a plurality of second through holes are arranged correspondingly on the upper anchor plate; A plurality of bottom bolts, correspondingly penetrated through the first through holes; A threaded sleeve having a first threaded portion and a second threaded portion disposed opposite to each other, disposed on one side of the lower anchor plate, wherein the bottom bolt is connected to the first threaded portion through the first through hole; A plurality of anchor bolts, with two ends respectively arranged corresponding to the first through hole and the second through hole, the portion of the anchor bolt corresponding to the second threaded portion is provided with an external thread, and the anchor bolt is connected to the threaded sleeve through the external thread; An anchor sleeve, which is passed through the outside of the anchor and is located between the upper anchor plate and the lower anchor plate, and the anchor sleeve acts on the threaded sleeve; An upper nut is arranged below the upper anchor plate, a thread connected to the upper nut is arranged on the anchor bolt, the anchor bolt enters the upper anchor plate through the upper nut, and the top of the anchor bolt sleeve rests on the upper nut; The anchor sleeve comprises: The sleeve body is arranged in a barrel shape; The plate body is arranged inside the sleeve body, and a first threaded portion is arranged on one side of the plate body in the sleeve body, and a second threaded portion is arranged on the other side.

2. The prestressed anchor bolt installation method according to claim 1, characterized in that: The lower anchor plate and the upper anchor plate are arranged in an annular shape, and a plurality of the anchor bolts are arranged in a circumferential shape.

3. The prestressed anchor bolt installation method according to claim 2, characterized in that: The prestressed anchor bolt installation structure also includes: a bottom flange, a through hole is provided at a position of the bottom flange corresponding to the second through hole, the anchor bolt enters the through hole through the second through hole, and a connecting nut is provided at one end of the anchor bolt protruding from the through hole.

4. The prestressed anchor bolt installation method according to claim 3, characterized in that: A protective cap is arranged on the anchor bolt.

5. The prestressed anchor bolt installation method according to claim 1, characterized in that: The prestressed anchor bolt installation structure also includes: a temporary support structure, which is arranged below the lower anchor plate, and the temporary support structure is detachably connected to the lower anchor plate.

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