Steel structure anchor bolt group positioning device used in concrete and implementation method thereof

Abstract

The present invention discloses a steel structure anchor bolt group positioning device used in concrete, comprising an anchor bolt (1), a fastening nut (2), a positioning plate (3), a positioning nut (4), concrete (5) and a steel reinforcement skeleton (6) arranged in the concrete, wherein the positioning plate is provided with positioning holes (301) at equal intervals, the fastening nut and the positioning nut are respectively arranged on the end surfaces on both sides of the positioning hole, a threaded section (102) is arranged at one end of the anchor bolt, the anchor bolt passes through the positioning hole, the threaded section is respectively connected to the fastening nut and the positioning nut, the upper cover of the concrete and the bottom surface of the positioning plate are mutually abutted, and the anchoring section (101) of the anchor bolt is arranged in the gap between adjacent steel reinforcement skeletons. The present invention can realize the quick fixing of the anchor bolt group of the steel structure, and can accurately control the position coordinates, verticality and mutual spacing of the anchor bolts, can avoid the displacement of the anchor bolts during the concrete vibration process, and control good construction quality.

Description

Technical Field

[0001] The invention relates to the technical field of connection design and construction between a steel structure project and a concrete foundation, and in particular to a device for accurately positioning a steel structure anchor bolt group in concrete. Background Art

[0002] With the development and application of large-span steel structures and high-rise steel structures, the connection between steel structure columns and concrete foundations is becoming more and more complex. Therefore, bolt groups are often used to connect steel structures to concrete. The problem that follows is that it is difficult to accurately locate the complex arrangement of bolt groups in concrete. Construction loads such as concrete vibration often cause anchor bolts to shift, which ultimately leads to the inability to accurately install the steel structure.

[0003] The displacement of anchor bolts in concrete foundations includes many situations: elevation error, position error, relative distance deviation and verticality error. If any one of the anchor bolts has a large deviation, the entire component cannot be installed, affecting the construction quality, safety and progress.

[0004] Authorization announcement number CN110067257B relates to a column foot anchor bolt device and its use method, which discloses N anchor bolts and a positioning assembly, wherein the positioning assembly includes a fixing plate, an anchor plate and a column formwork; the first end of the N anchor bolts is fixedly connected to the anchor plate, and the second end is fixedly connected to the fixing plate, the anchor bolts are arranged in parallel with the column formwork, and the fixing plate is clamped with the column formwork. The use method includes: fixing the N anchor bolts with the anchor plate to form a column foot anchor bolt group; supporting and tying the longitudinal steel bars, pre-positioning the column foot anchor bolt group, tying the stirrups, and forming a steel bar skeleton; supporting the column formwork; inserting the fixing plate into the column foot anchor bolt group and clamping it with the column formwork, and adjusting the pre-embedded elevation of the column foot anchor bolt group by the nut. However, its structure is relatively complex, the processing cost is high, and the fixing plate may collide with the steel bar skeleton, making the installation work difficult to operate, and it is also difficult to adjust the verticality, resulting in increased construction difficulty. Moreover, the number of anchor bolts in a group may usually be 6, 8, 10, or even more, which means that the anchor plate buried in the concrete is very large. On the one hand, the large-sized anchor plate seriously collides with the steel skeleton in the concrete, and on the other hand, it seriously hinders the pouring of concrete. In addition, the method of correcting the verticality of the anchor bolt is unreliable. It is unrealistic to adjust the verticality by adjusting the three fixing nuts at the bottom of the anchor bolt, because for the anchor bolt, the verticality of the anchor bolt screw section exposed outside the concrete is the real working part, while the verticality of the anchor bolt buried in the concrete can only serve as an indirect reference. Moreover, when there is a collision with the steel skeleton, the verticality of the anchor bolt buried in the concrete will be inconsistent with the verticality of the exposed part.

[0005] Therefore, it is urgent for those skilled in the art to develop a steel structure anchor group positioning device for use in concrete. Summary of the invention

[0006] The purpose of the present invention is to solve the deficiencies in the above-mentioned prior art and to provide a steel structure anchor bolt group positioning device for use in concrete.

[0007] In order to achieve the above-mentioned invention objectives, the technical solution provided by the present invention is as follows: a steel structure anchor group positioning device used in concrete, comprising an anchor bolt, a fastening nut, a positioning plate, a positioning nut, concrete and a steel frame arranged in the concrete, the positioning plate is equidistantly provided with positioning holes for anchor bolt installation, the fastening nut and the positioning nut are respectively arranged on the end faces on both sides of the positioning hole, a threaded section is provided at one end of the anchor bolt, the anchor bolt passes through the positioning hole, and the threaded section is respectively adapted to be connected with the fastening nut and the positioning nut, so that the anchor bolt and the positioning plate are connected to form a detachable anchor bolt group integral structure, the upper cover of the concrete and the bottom surface of the positioning plate abut against each other, and the anchoring section of the anchor bolt is adaptively arranged in the gap between adjacent steel frame.

[0008] Furthermore, the positioning nut is located on the bottom surface of the positioning plate, and the fastening nut is located on the top surface of the positioning plate.

[0009] Furthermore, the anchor bolt includes an anchoring section and a threaded section connected to the anchoring section.

[0010] Furthermore, the material of the anchor bolt is Q235B or Q345B or Q235C or Q345C steel, and a turning section is arranged on the anchoring section of the anchor bolt. When the anchor bolt collides with the steel bar skeleton, the anchoring section of the anchor bolt bends and forms a turning section at the anchoring section.

[0011] Furthermore, the anchoring section of the anchor bolt is fixedly connected to the steel bar skeleton by spot welding or binding.

[0012] Furthermore, the positioning plate is made of Q345B steel and has a plate thickness of 15-20 mm.

[0013] Furthermore, the positioning plate is in a rectangular or circular or annular or U-shaped shape, and the positioning holes on the positioning plate are arranged in a matrix or annularly.

[0014] The implementation method of the steel structure anchor bolt group positioning device applied to concrete,

[0015] Step 1: Install the steel frame;

[0016] Step 2: Install all the positioning nuts onto the threaded sections of the anchor bolts, and adjust the positions of the positioning nuts so that the length of the threaded sections exposed on the upper part of the positioning nuts remains consistent;

[0017] Step 3: Insert all anchor bolts into the positioning holes on the positioning plate, and install the fastening nuts on the threaded sections of the anchor bolts respectively, so that the fastening nuts and the positioning nuts clamp the positioning plate, and adjust the anchor bolts so that the axes of all threaded sections remain parallel and perpendicular to the positioning plate;

[0018] Step 4: Adaptively install the whole structure of the detachable anchor bolt group formed by connecting the anchor bolt and the positioning plate to the steel frame, wherein the anchoring section of the anchor bolt is adaptively installed in the gap between adjacent steel frame, and when there is a collision between the anchor bolt and the steel frame, the anchoring section of the anchor bolt is bent to form a turning section, the elevation and position of the positioning plate are adjusted, and the anchor bolt is connected to the steel frame by spot welding or binding to form a fixed structure;

[0019] Step 5: Pour concrete until the upper surface of the concrete and the bottom surface of the positioning plate abut against each other, and vibrate to make it dense;

[0020] Step 6: After the concrete solidifies and reaches the designed strength, remove the fastening nuts and positioning plates to form the finished steel structure anchor bolt group positioning device.

[0021] Based on the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0022] The present invention only needs to control the processing dimensional accuracy of the positioning plate and the positioning hole, and cooperate with the anchor bolts, fastening nuts and positioning nuts to realize the quick fixing of the anchor bolt group of the steel structure, and can accurately control the position coordinates, verticality and mutual spacing of the anchor bolts, which can avoid the displacement of the anchor bolts during the concrete vibration process and control good construction quality.

[0023] Compared with the prior art, the process of making threaded sections at both ends of the anchor bolt is omitted, and only one end of the anchor bolt needs to be made into a threaded section, which saves costs; and the number of nuts buried in the concrete is omitted, which further saves costs; in addition, the fixing plate cast in the concrete is omitted, which saves material costs. When the concrete solidifies to the design strength, the fastening nuts and positioning plates are removed and can be recycled and reused. By spot welding or tying the anchor bolt to the steel frame, the anchoring force of the anchor bolt in the concrete can be increased, which is easy to operate and reliable in force.

[0024] In particular, when the designed position of the anchor bolt collides with the steel skeleton in the concrete, the present invention is more advantageous. The present invention utilizes the principle of bionics. The whole formed by the anchor bolt group and the positioning plate is like a "tree root". The anchor bolt of the present invention, which is only provided with an anchoring section at one end, is similar to a "root" and can be freely inserted between the gaps of the steel skeleton. It has higher bending flexibility and does not affect the verticality of the threaded section of the anchor bolt exposed outside the concrete, ensuring that the threaded section, i.e., the "trunk", can be set vertically. This installation method is "extremely resilient" and can be applied to complex installation environments, with better adaptability than existing technologies. However, existing technologies are very limited by installation conditions and the layout environment of the steel skeleton. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The present invention is a structural schematic diagram of a steel structure anchor bolt group positioning device applied to concrete in an installed state.

[0026] Figure 2 It is a structural schematic diagram of another installation state of the steel structure anchor bolt group positioning device applied to concrete according to the present invention.

[0027] Figure 3 It is a schematic structural diagram of the positioning plate (circular ring shape) and its positioning hole of the present invention.

[0028] Figure 4 It is a structural schematic diagram of the positioning plate (in the shape of a Chinese character U) and its positioning hole of the present invention.

[0029] Figure 5 It is a schematic structural diagram of the positioning plate (rectangular) and its positioning hole of the present invention.

[0030] Figure 6 It is a schematic diagram of the structure of the anchor bolt (straight line) of the present invention.

[0031] Figure 7 It is a schematic diagram of the structure of the anchor bolt (curved) of the present invention.

[0032] In the figure: 1. anchor bolt, 101. anchoring section, 102. threaded section, 103. bending section, 2. fastening nut, 3. positioning plate, 301. positioning hole, 4. positioning nut, 5. concrete, 6. steel bar skeleton. DETAILED DESCRIPTION

[0033] The present invention will be further explained below in conjunction with the accompanying drawings and embodiments.

[0034] Example 1

[0035] like Figure 1-Figure 7As shown, a steel structure anchor group positioning device used in concrete includes an anchor 1, a fastening nut 2, a positioning plate 3, a positioning nut 4, concrete 5 and a steel skeleton 6 arranged in the concrete 5. The positioning plate 3 is equidistantly provided with positioning holes 301 for installing the anchor 1. The fastening nut 2 and the positioning nut 4 are respectively arranged on the end surfaces on both sides of the positioning hole 301. A threaded section 102 is provided at one end of the anchor 1. The anchor 1 passes through the positioning hole 301. The threaded section 102 is respectively adapted to be connected with the fastening nut 2 and the positioning nut 4, so that the anchor 1 and the positioning plate 3 are connected to form a detachable anchor group overall structure. The upper cover of the concrete 5 and the bottom surface of the positioning plate 3 abut against each other. The anchoring section 101 of the anchor 1 is adaptively arranged in the gap between adjacent steel skeletons 6.

[0036] Example 2

[0037] The rest is consistent with the solution of Example 1, the positioning nut 4 is located on the bottom surface of the positioning plate 3, and the fastening nut 2 is located on the top surface of the positioning plate 3.

[0038] Example 3

[0039] The rest is consistent with the solution of embodiment 1 or 2. The anchor bolt 1 includes an anchoring section 101 and a threaded section 102 connected to the anchoring section 101.

[0040] Example 4

[0041] The rest is consistent with the scheme of any one of embodiments 1-3, the material of the anchor bolt 1 is usually Q235B or Q345B steel, and Q235C or Q345C steel is preferably used in cold regions, and a turning section 103 is provided on the anchoring section 101 of the anchor bolt 1. When the anchor bolt 1 collides with the steel skeleton 6, the anchoring section 101 of the anchor bolt 1 is bent, and a turning section 103 is formed at the anchoring section 101.

[0042] Q235B or Q345B or Q235C or Q345C steel has good mechanical properties, certain elongation, strength, good toughness and castability, is easy to stamp and has bending properties. It is widely used in welded structural parts with high quality requirements in construction and bridge engineering.

[0043] Example 5

[0044] The rest is consistent with the solution of any one of embodiments 1-4, and the anchoring section 101 of the anchor bolt 1 is fixedly connected to the steel skeleton 6 by spot welding or binding.

[0045] Example 6

[0046] The rest is consistent with the solution of any one of embodiments 1-5. The positioning plate 3 is made of Q345B steel and has a plate thickness of 15-20 mm.

[0047] Example 7

[0048] The rest is consistent with the solutions of any one of embodiments 1-6, the positioning plate 3 is in a rectangular or circular or ring-shaped shape, and the positioning holes 301 on the positioning plate 3 are arranged in a matrix or ring-shaped arrangement.

[0049] Example 8

[0050] The rest is consistent with the scheme of any one of Examples 1-7, and the implementation method of the steel structure anchor bolt group positioning device applied to concrete is:

[0051] Step 1: Install the steel frame 6;

[0052] Step 2: Install all the positioning nuts 4 onto the threaded section 102 of the anchor bolt 1, and adjust the position of the positioning nuts 4 so that the length of the threaded section 102 exposed on the upper part of the positioning nuts 4 remains consistent;

[0053] Step 3: Insert all anchor bolts 1 into the positioning holes 301 on the positioning plate 3, and install the fastening nuts 2 to the threaded sections 102 of the anchor bolts 1 respectively, so that the fastening nuts 2 and the positioning nuts 4 clamp the positioning plate 3, and adjust the anchor bolts 1 so that the axes of all the threaded sections 102 remain parallel and perpendicular to the positioning plate 3;

[0054] Step 4: Adaptively install the overall structure of the detachable anchor bolt group formed by connecting the anchor bolt 1 and the positioning plate 3 to the steel skeleton 6, wherein the anchoring section 101 of the anchor bolt 1 is adaptively installed in the gap between adjacent steel skeletons 6, and when there is a collision between the anchor bolt 1 and the steel skeleton 6, the anchoring section 101 of the anchor bolt 1 is bent to form a turning section 103, the elevation and position of the positioning plate 3 are adjusted, and the anchor bolt 1 is connected to the steel skeleton 6 by spot welding or binding to form a fixed structure;

[0055] Step 5: pouring concrete 5 until the upper cover of the concrete 5 and the bottom surface of the positioning plate 3 abut against each other, and vibrating and compacting;

[0056] Step 6: After the concrete 5 solidifies and reaches the designed strength, remove the fastening nut 2 and the positioning plate 3 to form a finished product of the steel structure anchor bolt group positioning device.

[0057] The above contents are examples and explanations of the present invention, but do not mean that the advantages that can be achieved by the present invention are limited thereto. Any simple changes in the structure that may be made during the practice of the present invention, and / or one or more of the advantages achieved in some embodiments are within the scope of protection of this application.

Claims

1. An implementation method of a steel structure anchor bolt group positioning device used in concrete, characterized in that: The steel structure anchor bolt group positioning device comprises an anchor bolt (1), a fastening nut (2), a positioning plate (3), a positioning nut (4), concrete (5), and a steel frame (6) arranged in the concrete (5); the positioning plate (3) is provided with positioning holes (301) for installing the anchor bolt (1) at equal intervals; the fastening nut (2) and the positioning nut (4) are respectively arranged on the end surfaces on both sides of the positioning hole (301); one end of the anchor bolt (1) is provided with a threaded section (102); the anchor bolt (1) passes through the positioning hole (301); the threaded section (102) is respectively adapted to be connected with the fastening nut (2) and the positioning nut (4), so that the anchor bolt (1) and the positioning plate (3) are connected to form a detachable anchor bolt group integral structure; the anchoring section (101) of the anchor bolt (1) is adapted to be arranged in a gap between adjacent steel frames (6); the upper cover of the concrete (5) and the bottom surface of the positioning plate (3) are in contact with each other; The positioning nut (4) is located on the bottom surface of the positioning plate (3), and the fastening nut (2) is located on the top surface of the positioning plate (3); The anchor bolt (1) comprises an anchoring section (101) and a threaded section (102) connected to the anchoring section (101); The positioning plate (3) is rectangular, circular, annular or U-shaped, and the positioning holes (301) on the positioning plate (3) are arranged in a matrix or annularly; The implementation steps include: Step 1: Install the steel frame (6); Step 2: Install all the positioning nuts (4) onto the threaded section (102) of the anchor bolt (1), and adjust the position of the positioning nuts (4) so ​​that the length of the threaded section (102) exposed above the positioning nuts (4) remains consistent; Step 3: insert all anchor bolts (1) into the positioning holes (301) on the positioning plate (3), and install the fastening nuts (2) on the threaded sections (102) of the anchor bolts (1) respectively, so that the fastening nuts (2) and the positioning nuts (4) clamp the positioning plate (3), and adjust the anchor bolts (1) so that the axes of all the threaded sections (102) remain parallel and perpendicular to the positioning plate (3); Step 4: The detachable anchor bolt group structure formed by connecting the anchor bolt (1) and the positioning plate (3) is adaptively mounted on the steel frame (6), wherein the anchoring section (101) of the anchor bolt (1) is adaptively mounted in the gap between adjacent steel frames (6), and when there is a collision between the anchor bolt (1) and the steel frame (6), the anchoring section (101) of the anchor bolt (1) is bent to form a turning section (103), the elevation and position of the positioning plate (3) are adjusted, and the anchor bolt (1) is connected to the steel frame (6) by spot welding or binding to form a fixed structure; Step 5: pouring concrete (5) until the upper cover of the concrete (5) and the bottom surface of the positioning plate (3) abut against each other, and vibrating to make it dense; Step 6: After the concrete (5) solidifies and reaches the designed strength, the fastening nut (2) and the positioning plate (3) are removed to form a finished product of the steel structure anchor bolt group positioning device.

2. The implementation method of the steel structure anchor bolt group positioning device used in concrete according to claim 1 is characterized in that: The material of the anchor bolt (1) is Q235B, Q345B, Q235C or Q345C steel, and a turning section (103) is provided on the anchoring section (101) of the anchor bolt (1).

3. The implementation method of the steel structure anchor group positioning device used in concrete according to claim 1 is characterized in that: The anchoring section (101) of the anchor bolt (1) is fixedly connected to the steel bar skeleton (6) by spot welding or binding.

4. The implementation method of the steel structure anchor bolt group positioning device used in concrete according to claim 1 is characterized in that: The positioning plate (3) is made of Q345B steel and has a plate thickness of 15-20 mm.

Images