Steel structure foundation bolt pre-embedding positioning structure and positioning method
By setting bolt holes on the edge of the steel plate and determining the center position of the anchor bolts in conjunction with the short column corner reinforcement of the foundation, the problems of long layout time and low accuracy in the pre-embedding process of steel structure anchor bolts were solved, achieving efficient and accurate pre-embedding positioning, and ensuring construction quality and schedule.
Patent Information
- Application Number
- CN202511478835.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-16
- Publication Date
- 2025-12-09
AI Technical Summary
During the pre-embedding process of steel structure anchor bolts, the layout time is long and the accuracy is low, resulting in low construction efficiency and accuracy, and affecting the construction period.
The positioning structure uses steel plates and pre-embedded bolts. By setting bolt holes on the edge of the steel plate and combining them with the four corner reinforcements of the foundation short column, the center position of the anchor bolts is determined. Steel wire rope is used to bind the bolts to ensure that the center lines coincide, thus achieving rapid and accurate pre-embedded positioning.
This improved the accuracy and efficiency of anchor bolt pre-embedding, ensured construction quality, shortened the construction period, and met design requirements.
Smart Images
Figure CN121088198A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of steel structure construction technology, specifically to a pre-embedded positioning structure and positioning method for steel structure anchor bolts. Background Technology
[0002] Anchor bolts for steel structures are core components used to connect steel frame structures to concrete foundations. When mechanical components are installed on a concrete foundation, one end of the anchor bolt is embedded in the concrete. They mainly bear axial tensile and shear forces to ensure the stability and safety of the building structure. They are usually made of Q345B high-strength steel, with a tensile strength of over 500MPa and a yield strength ratio of 0.8 (e.g., performance grade 8.8). Their self-weight is only 1 / 3 that of concrete, but their load-bearing capacity is 5 times higher. They are mostly L-shaped, J-shaped, or U-shaped, with a hook design at the end to enhance the anchoring effect. During installation, they need to be pre-embedded in the concrete foundation and fixed to the steel column of the steel structure using spacers and nuts. They are widely used in bridges, tower cranes, large steel structure factories, and other buildings with high stability requirements. They can withstand dynamic loads and seismic forces, and their seismic performance is 20 times that of concrete. In the process of pre-embedding anchor bolts for steel structures, how to quickly and accurately locate the center is an important aspect of pre-embedding anchor bolts; Currently, the main construction method for bolt pre-embedding is to use a total station to lay out the axis of the foundation short column. The construction elevation of the foundation short column is below ±0. However, during the laying out, the backsight is often difficult to adjust due to uncontrollable terrain conditions or local obstruction of the short column formwork, which affects the laying out time and accuracy. As a result, the construction efficiency and accuracy of anchor bolt pre-embedding are low, and the construction period is also affected. To address the aforementioned problems, the inventors have proposed a pre-embedded positioning structure and method for steel structure anchor bolts to solve these issues. Summary of the Invention
[0003] To address the problems of long layout time and low layout accuracy during anchor bolt construction, which lead to low construction efficiency, low construction accuracy, and impact on construction period, the present invention aims to provide a positioning structure and method for anchor bolt pre-embedding in steel structures.
[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a steel structure anchor bolt pre-embedded positioning structure, the positioning structure including a steel plate and pre-embedded bolts, a plurality of pre-embedded bolts are provided, a plurality of bolt holes are provided at the edge of the steel plate, and the pre-embedded bolts are fixed at the edge of the steel plate through the bolt holes.
[0005] Preferably, the bolt holes are formed by drilling, and a plurality of the bolt holes are distributed at equal intervals along the edge of the steel plate.
[0006] A method for positioning a pre-embedded positioning structure for steel structure anchor bolts includes the following steps: S1. When binding the reinforcing bars of the foundation short column, leave 50cm for the reinforcing bars of the four corner bars of the foundation short column. Before the formwork is closed, correct the position of the reinforcing bars of the foundation short column. After the reinforcing bars are corrected, the formwork is closed. By using spacers or binding the reinforcing bar ends, the relative position of the reinforcing bars is fixed with the inner edge of the formwork to ensure that the reinforcing bars will not shift due to shaking. S2. Drill holes in the steel plate according to the size and relative position requirements of the pre-embedded bolts to form multiple bolt holes, so as to meet the position requirements of the pre-embedded bolts, and mark the diagonal lines on the surface of the steel plate. S3. Mark the top elevation of the embedded bolts on the reserved part of the reinforcing bar, and determine the center position of the short column by tying steel wire ropes on the diagonal of the reserved part of the reinforcing bar. S4. Finally, adjust the steel plate so that its center line is completely aligned with the center line of the wire rope. Then, fix the position of the pre-embedded bolts, remove the steel plate, and proceed with the subsequent construction.
[0007] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In this invention, through steps S1 to S4, the anchor bolts have high pre-embedding accuracy, fast construction efficiency, convenient operation, safe use, and the pre-embedding error meets the design requirements. At the same time, the construction quality is guaranteed while ensuring pre-embedding accuracy and safe use, and the construction period is saved. 2. In this invention, the center position of the anchor bolt is quickly determined by utilizing the four corner reinforcements of the foundation short column, thereby improving the construction efficiency of anchor bolt pre-embedding and the accuracy of anchor bolt pre-embedding. Attached Figure Description
[0008] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0009] Figure 1 This is a top view of the pre-embedded bolts, steel plate, and bolt holes of the present invention.
[0010] Figure 2 This is a side view of the structure of the pre-embedded bolts, steel plate, and bolt holes of the present invention.
[0011] Figure 3 This is a schematic diagram of the diagonal markings in the positioning method of the present invention.
[0012] Figure 4 This is a schematic diagram showing the distribution of bolt holes in the positioning method of the present invention.
[0013] Figure 5 This is a diagram showing the positional distribution of the steel plate, embedded bolts, template, and reinforcing bars in the positioning method of this invention.
[0014] In the diagram: 1. Steel plate; 11. Bolt hole; 2. Embedded bolt; 3. Reinforcing bar; 4. Formwork. Detailed Implementation
[0015] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0016] Example: Figure 1-5 As shown, the present invention provides a pre-embedded positioning structure for steel structure anchor bolts. The positioning structure includes a steel plate 1 and pre-embedded bolts 2. Several pre-embedded bolts 2 are provided. Several bolt holes 11 are provided at the edge of the steel plate 1. The bolt holes 11 are formed by drilling. Several bolt holes 11 are distributed at equal intervals at the edge of the steel plate 1. The pre-embedded bolts 2 pass through the bolt holes 11 and are fixed at the edge of the steel plate 1.
[0017] A method for positioning a pre-embedded positioning structure for steel structure anchor bolts includes the following steps: S1. When binding the reinforcing bars 3 of the foundation short column, leave 50cm for the reinforcing bars 3 of the four corner bars of the foundation short column. Before the formwork 4 is closed, correct the position of the reinforcing bars 3 of the foundation short column. After the reinforcing bars 3 are corrected, the formwork 4 is closed. By using shims or binding the reinforcing bar heads, the relative position of the reinforcing bars 3 is fixed with the inner edge of the formwork 4 to ensure that the reinforcing bars 3 will not shift due to shaking. S2. Drill holes in the steel plate 1 according to the size and relative position requirements of the pre-embedded bolts 2 to form multiple bolt holes 11 so as to meet the position requirements of the pre-embedded bolts 2, and mark the diagonal lines on the surface of the steel plate 1. S3. Mark the top elevation of the embedded bolt 2 on the reserved part of the reinforcing bar 3, and determine the center position of the short column by tying steel wire ropes on the diagonal of the reserved part of the reinforcing bar 3. S4. Finally, adjust steel plate 1 so that its center line is completely aligned with the center line of the wire rope. Then, fix the position of the pre-embedded bolts 2 and remove steel plate 1 for subsequent construction.
[0018] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.
Claims
1. A pre-embedded positioning structure for steel structure anchor bolts, characterized in that: The positioning structure includes a steel plate (1) and pre-embedded bolts (2). Several pre-embedded bolts (2) are provided. Several bolt holes (11) are provided at the edge of the steel plate (1). The pre-embedded bolts (2) pass through the bolt holes (11) and are fixed at the edge of the steel plate (1).
2. The steel structure anchor bolt pre-embedded positioning structure as described in claim 1, characterized in that, The bolt holes (11) are formed by drilling, and a number of the bolt holes (11) are equidistantly distributed at the edge of the steel plate (1).
3. A positioning method for the steel structure anchor bolt pre-embedded positioning structure as described in any one of claims 1-2, characterized in that, Includes the following steps: S1. When binding the reinforcing bars (3) of the foundation short column, leave 50cm for the reinforcing bars (3) of the four corner bars of the foundation short column. Before the formwork (4) is closed, correct the position of the reinforcing bars (3) of the foundation short column. After the reinforcing bars (3) are corrected, the formwork (4) is closed. By using spacers or binding the reinforcing bar heads, the relative position of the reinforcing bars (3) is fixed with the inner edge of the formwork (4) to ensure that the reinforcing bars (3) will not shift due to shaking. S2. According to the size and relative position requirements of the pre-embedded bolts (2), the steel plate (1) is drilled to form multiple bolt holes (11) so that it meets the position requirements of the pre-embedded bolts (2), and diagonal lines are marked on the surface of the steel plate (1); S3. Mark the top elevation of the embedded bolt (2) on the reserved part of the reinforcing bar (3), and determine the center position of the short column by tying steel wire ropes on the diagonal of the reserved part of the reinforcing bar (3). S4. Finally, adjust the steel plate (1) so that the center line of the steel plate (1) is completely aligned with the center line of the wire rope. Start fixing the position of the pre-embedded bolt (2) and remove the steel plate (1) for subsequent construction.