Gradual change type rod body
By designing a multi-segment reinforcement structure with a gradually changing shape, and rationally allocating reinforcement according to the stress characteristics of different parts of the anchored rod, the problem of steel waste caused by traditional uniform cross-section reinforcement is solved, achieving material savings and improved engineering stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-22
- Publication Date
- 2026-04-07
AI Technical Summary
Traditional anchoring rods use uniform cross-section reinforcement, which leads to wasted steel bars, poor economic efficiency, and fails to fully consider the stress characteristics of different parts of the rod.
Design a gradually changing bar with a multi-segment reinforcement structure, where the upper reinforcement has the largest diameter, the middle reinforcement has the second largest diameter, and the lower reinforcement has the smallest diameter. The reinforcement is connected and welded in segments through connecting sleeves, and the reinforcement is reasonably arranged according to the stress conditions.
It reduces the amount of steel reinforcement used, lowers project costs, and improves economic efficiency, while ensuring the structural strength and stability of the anchor rod. It is suitable for various engineering needs such as anti-buoyancy anchor rods and foundation pit sidewall anchor rods.
Smart Images
Figure CN224092487U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of anchoring tool, specifically relates to a gradually changing type rod body. BACKGROUND
[0002] In anchoring engineering, the anchoring rod body such as anti-floating anchor rod, foundation pit side wall anchor rod and soil nail is the key component for guaranteeing the stability of engineering structure. In the design of reinforcement of traditional anchoring rod body, equal section configuration mode is usually adopted, that is, the same diameter of steel bars is used in the whole length of the rod body.
[0003] However, in actual engineering application, the stress of anchoring rod body has significant distribution characteristics: the tensile force borne by the end head part is the largest, and the tensile force borne gradually decreases along with the extension to the end bottom, showing the stress law of gradually increasing from the end bottom to the end head. The traditional equal section reinforcement mode does not fully consider this stress characteristic, in order to meet the stress requirement of the end head part, the whole rod body adopts the reinforcement specification matched with the end head part, resulting in that the actual stress of the steel bars on the end bottom side is much smaller than the designed bearing capacity, causing the waste of steel bar materials and reducing the economic benefit of the engineering.
[0004] Therefore, the prior art needs to be improved. SUMMARY
[0005] The technical problem to be solved by the utility model is the waste of steel bars and poor economic benefit caused by the equal section reinforcement of traditional anchoring rod body, and the purpose is to provide a gradually changing type rod body, which realizes reasonable reinforcement according to the stress conditions of different parts of the rod body by using corresponding technical means, reduces the amount of steel bars, reduces the engineering cost, and at the same time ensures the structural strength and stability of the anchor rod.
[0006] The utility model realizes the following technical scheme:
[0007] In the first aspect, the utility model provides a gradually changing type rod body, which comprises a main body sleeve and a connecting sleeve, a plurality of multi-section reinforcements are arranged in the main body sleeve, the multi-section reinforcements comprise upper steel bars, middle steel bars and lower steel bars connected in sequence from top to bottom, the upper steel bars are connected with the middle steel bars through the connecting sleeve, the middle steel bars are connected with the lower steel bars through the connecting sleeve,
[0008] The maximum stress of the upper steel bars is greater than that of the middle steel bars, and the maximum stress of the middle steel bars is greater than that of the lower steel bars.
[0009] Further, in the utility model, the diameter of the upper steel bars is greater than that of the middle steel bars, and the diameter of the middle steel bars is greater than that of the lower steel bars.
[0010] Furthermore, in this utility model, the interior of the connecting sleeve is provided with a partition, which divides the interior of the connecting sleeve into an upper connecting chamber and a lower connecting chamber.
[0011] Furthermore, in this utility model, both the upper connecting chamber and the lower connecting chamber are provided with steel bar pre-fixing members, which are connected and fixed to the upper steel bar, the middle steel bar, and the lower steel bar.
[0012] Furthermore, in this utility model, the connecting sleeve is configured as a circular sleeve, and the pre-fixing component for the reinforcing bars includes an arc-shaped push plate and a threaded push rod that abut against each other. The arc-shaped push plate is connected to the upper reinforcing bar, the middle reinforcing bar, and the lower reinforcing bar, and the threaded push rod is threadedly connected to the connecting sleeve.
[0013] Furthermore, in this utility model, the connecting sleeve is fixedly provided with a nut, and the nut is threadedly connected to the threaded push rod.
[0014] Furthermore, in this utility model, the aforementioned arc-shaped push plate is provided with an insertion hole for inserting the threaded push rod.
[0015] Furthermore, in this utility model, the connecting sleeve is configured as a square sleeve, the pre-fixing component for the reinforcing bar includes a clamp, and the side of the connecting sleeve is provided with a through hole for the steel strip and end of the clamp to pass through.
[0016] Furthermore, in this utility model, the aforementioned clamp fixes the reinforcing bar to the corner of the connecting sleeve.
[0017] Furthermore, in this utility model, the pre-fixed upper reinforcing bar is welded to the connecting sleeve; the pre-fixed middle reinforcing bar is welded to the connecting sleeve; and the pre-fixed lower reinforcing bar is welded to the connecting sleeve.
[0018] Compared with the prior art, this utility model has the following advantages and beneficial effects:
[0019] This invention employs a segmented reinforcement design based on the stress characteristics of different parts of the anchor rod. The maximum stress on the gradually changing rod body gradually changes from top to bottom, with the diameter of the upper reinforcement bars being larger than that of the middle bars, and the diameter of the middle bars being larger than that of the lower bars. This ensures that the load-bearing capacity of each section of reinforcement matches the actual stress conditions as closely as possible, avoiding the material waste caused by traditional uniform cross-section reinforcement. This significantly reduces construction costs and improves economic efficiency. The gradually changing rod body of this invention allows for flexible adjustment of the diameter and length of each section of reinforcement, as well as the specifications and dimensions of the connecting sleeves, based on the stress calculation results of different projects. It is suitable for various anchoring rods such as anti-buoyancy anchor rods, foundation pit sidewall anchor rods, and soil nails, meeting the personalized needs of different projects. Attached Figure Description
[0020] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings:
[0021] Figure 1 This is a schematic diagram of the gradient rod of this utility model;
[0022] Figure 2 This is a schematic diagram of the internal structure of the connecting sleeve in Embodiment 1 of this utility model;
[0023] Figure 3 This is a schematic diagram of the top surface of the connecting sleeve in Embodiment 1 of this utility model;
[0024] Figure 4 This is an external schematic diagram of the connecting sleeve in Embodiment 2 of this utility model;
[0025] Figure 5 This is a cross-sectional schematic diagram of the connecting sleeve in Embodiment 2 of this utility model.
[0026] The attached diagram shows the markings and corresponding component names: 1-Main sleeve, 2-Upper reinforcing bar, 3-Middle reinforcing bar, 4-Lower reinforcing bar, 5-Connecting sleeve, 501-Partition plate, 502-Upper connecting chamber, 503-Lower connecting chamber, 504-Nut, 505-Through hole, 6-Reinforcing bar pre-fixing component, 601-Arc-shaped push plate, 602-Threaded push rod, 603-Clamp. Detailed Implementation
[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only for explaining the present utility model and are not intended to limit the present utility model. The following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to illustrate selected embodiments of the present utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.
[0028] It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0029] Example 1
[0030] This embodiment 1 provides a gradient-shaped rod, such as Figures 1-3 As shown, the gradient rod body of this embodiment 1 includes a main sleeve 1, a connecting sleeve 5, and multiple reinforcing sections. The connecting sleeve 5 is a circular sleeve, and the specific structure is as follows.
[0031] In this embodiment, combined with Figure 1 and Figure 2 As shown, the main sleeve 1 is made of steel pipe, with its inner diameter determined by the overall outer diameter of the multi-segment reinforcement. Its length is consistent with the design length of the anchor rod. It is used to wrap and protect the internal multi-segment reinforcement, and simultaneously forms an integral load-bearing structure with the grouting body. The diameter of the upper reinforcement 2 is larger than that of the middle reinforcement 3, and the diameter of the middle reinforcement 3 is larger than that of the lower reinforcement 4. Therefore, the maximum force on the upper reinforcement 2 is greater than that on the middle reinforcement 3, and the maximum force on the middle reinforcement 3 is greater than that on the lower reinforcement 4, allowing the diameter of the reinforcement bars to gradually change according to the stress conditions.
[0032] Furthermore, in combination Figure 1 As shown, the multi-segment reinforcement includes upper reinforcement 2, middle reinforcement 3, and lower reinforcement 4, all of which can be HRB400 grade threaded steel bars of different thicknesses. The total number of multi-segment reinforcement bars is three, distributed within the main sleeve 1. (Combined with...) Figure 2 and Figure 3 As shown, the connecting sleeve 5 is a circular sleeve made of seamless steel pipe. A partition plate 501 is welded inside the connecting sleeve 5, or the partition plate 501 is integrally formed with the connecting sleeve 5. The partition plate 501 divides the interior of the connecting sleeve 5 into an upper connecting chamber 502 and a lower connecting chamber 503. The material of the partition plate 501 is the same as that of the connecting sleeve 5. A nut 504 is uniformly welded onto the outer wall of the connecting sleeve 5. The axis of the nut 504 is perpendicular to the axis of the connecting sleeve 5, and one nut 504 is provided for each connecting chamber. The side wall of the connecting sleeve 5 has holes aligned with the nuts 504.
[0033] It should be noted that multiple evenly distributed holes can be provided on the partition plate 501 to facilitate grout flow.
[0034] In this embodiment 1, to facilitate the pre-fixation of the reinforcing bars, allowing the upper and lower reinforcing bars to be aligned and welded together for easier subsequent welding, the reinforcing bar pre-fixing component 6 includes an arc-shaped push plate 601 and a threaded push rod 602. The arc-shaped push plate 601 is made of bent steel plate. Combined with... Figure 3 As shown, the right center of the arc-shaped push plate 601 has an insertion hole for the threaded push rod 602. The threaded push rod 602 is made of round steel, with threads on its middle surface. The thread specification matches that of the nut 504. The left end of the threaded push rod 602 is a smooth cylindrical surface for easy insertion into the insertion hole. The right end of the threaded push rod 602 has a hexagonal screw head for easy turning with an electric wrench.
[0035] The working principle of this embodiment 1 is as follows:
[0036] Insert the lower end of the upper reinforcing bar 2 into the upper connecting chamber 502 of the connecting sleeve 5, so that the lower end face of the upper reinforcing bar 2 contacts the upper surface of the partition plate 501. Place the arc-shaped push plate 601 against the surface of the lower reinforcing bar 4. Insert the threaded push rod 602 through the nut 504 into the insertion hole of the arc-shaped push plate 601. Rotate the threaded push rod 602; under the action of the thread, the threaded push rod 602 pushes the arc-shaped push plate 601 towards the upper reinforcing bar 2 until the arc-shaped push plate 601 is tightly abutted against the upper reinforcing bar 2, thus achieving pre-fixation of the upper reinforcing bar 2. Using the same method, insert the upper end of the middle reinforcing bar 3 into the lower connecting chamber 503, opposite to the lower end of the upper reinforcing bar 2 on both sides of the partition plate 501. Pre-fix the middle reinforcing bar 3 through the reinforcing bar pre-fixing member 6. Insert the lower end of the middle reinforcing bar 3 and the upper end of the lower reinforcing bar 4 into the two connecting chambers of another connecting sleeve 5, and repeat the above pre-fixing operation.
[0037] After the reinforcing bars are pre-fixed, they are welded to the connecting sleeve 5 using arc welding, so that the upper reinforcing bar 2, the middle reinforcing bar 3, and the lower reinforcing bar 4 are connected through the connecting sleeve 5 to form a whole multi-segment reinforcement. The connected multi-segment reinforcement is installed into the main sleeve 1, and then grout is injected into the main sleeve 1. After the grout solidifies, a complete gradient rod is formed.
[0038] When the tapered rod is subjected to tensile force, the force first acts on the upper reinforcing bar 2. Since the upper reinforcing bar 2 has the largest diameter and the strongest load-bearing capacity, it can effectively withstand the maximum tensile force. Through the welded connection of the connecting sleeve 5, the upper reinforcing bar 2 transfers part of the tensile force to the middle reinforcing bar 3. The diameter of the middle reinforcing bar 3 matches the force, enabling it to stably withstand the transferred tensile force and further transfer it to the lower reinforcing bar 4. The lower reinforcing bar 4 bears the minimum tensile force. The coordinated work of each section of the reinforcing bar achieves uniform force transfer, ensuring the overall stress stability of the anchor rod. Furthermore, it saves on reinforcing bar material.
[0039] Example 2
[0040] Combination Figure 1 , Figure 4 and Figure 5 As shown, the gradient rod of this embodiment 2 includes a main sleeve 1, a connecting sleeve 5 and multiple reinforcing bars. The basic structure is the same as that of the gradient rod of embodiment 1. The main difference is in the structure of the connecting sleeve 5, as detailed below.
[0041] In this embodiment 2, combined with Figure 4 and Figure 5 As shown, the connecting sleeve 5 is configured as a square sleeve and is made of square steel pipe. A partition 501 is welded inside the connecting sleeve 5, which divides the inside of the connecting sleeve 5 into an upper connecting chamber 502 and a lower connecting chamber 503.
[0042] Furthermore, such as Figure 5 The connecting sleeve 5 has through holes 505 on both its left and lower sides. The through holes 505 are rectangular holes. The rebar pre-fixing component 6 includes a clamp 603, which is made of stainless steel strip. The end of the clamp 603 is provided with a tightening mechanism, which can tighten the steel strip and fix the rebar.
[0043] Insert the lower end of the upper reinforcing bar 2 into the upper connecting chamber 502 of the connecting sleeve 5, so that the lower end face of the upper reinforcing bar 2 contacts the upper surface of the partition 501, with the upper reinforcing bar 2 located at a corner of the connecting sleeve 5. Pass one end of the clamp 603 and the steel strip through the through hole 505 on the side of the connecting sleeve 5, wrap it around the surface of the upper reinforcing bar 2, and then pass it through the other through hole 505 to tighten the end of the clamp 603, so that the steel strip tightly clamps the upper reinforcing bar 2, thus achieving pre-fixation of the upper reinforcing bar 2. Use the same method to fix the middle reinforcing bar 3 or the lower reinforcing bar 4. After the reinforcing bars are pre-fixed, use arc welding to weld the reinforcing bars to the connecting sleeve 5.
[0044] When the anchor rod is subjected to anti-buoyancy tension, the tension is applied to the upper reinforcing bar 2. The upper reinforcing bar 2, with its larger diameter and bearing capacity, bears the main tension. The tension is stably transmitted to the middle reinforcing bar 3. The middle reinforcing bar 3 bears part of the tension according to its bearing capacity corresponding to its diameter, and then further transmits it to the lower reinforcing bar 4. The lower reinforcing bar 4 bears a smaller tension. The various sections of reinforcing bars form a cooperative force-bearing system through the connecting sleeve 5, ensuring that the anchor rod can effectively resist buoyancy and guarantee the stability of the engineering structure.
[0045] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.
Claims
1. A gradient-shaped rod, characterized in that, The system includes a main sleeve (1) and a connecting sleeve (5). The main sleeve (1) contains multiple multi-segment reinforcing bars, which include an upper reinforcing bar (2), a middle reinforcing bar (3), and a lower reinforcing bar (4) connected sequentially from top to bottom. The upper reinforcing bar (2) and the middle reinforcing bar (3) are connected through the connecting sleeve (5), and the middle reinforcing bar (3) and the lower reinforcing bar (4) are connected through the connecting sleeve (5). The maximum force on the upper reinforcing bar (2) is greater than the maximum force on the middle reinforcing bar (3), and the maximum force on the middle reinforcing bar (3) is greater than the maximum force on the lower reinforcing bar (4).
2. The gradient rod body according to claim 1, characterized in that, The diameter of the upper reinforcing bar (2) is greater than the diameter of the middle reinforcing bar (3), and the diameter of the middle reinforcing bar (3) is greater than the diameter of the lower reinforcing bar (4).
3. The gradient rod body according to claim 1, characterized in that, The connecting sleeve (5) is provided with a partition (501) inside, which divides the interior of the connecting sleeve (5) into an upper connecting chamber (502) and a lower connecting chamber (503).
4. The gradient rod body according to claim 3, characterized in that, Both the upper connecting chamber (502) and the lower connecting chamber (503) are provided with steel bar pre-fixing components (6), which are connected and fixed to the upper steel bar (2), the middle steel bar (3), and the lower steel bar (4).
5. The gradient rod body according to claim 4, characterized in that, The connecting sleeve (5) is configured as a circular sleeve. The steel bar pre-fixing component (6) includes an arc-shaped push plate (601) and a threaded push rod (602) that abut against each other. The arc-shaped push plate (601) is connected to the upper steel bar (2), the middle steel bar (3), and the lower steel bar (4). The threaded push rod (602) is threadedly connected to the connecting sleeve (5).
6. The gradient rod body according to claim 5, characterized in that, The connecting sleeve (5) is fixedly provided with a nut (504), and the nut (504) is threadedly connected to the threaded push rod (602).
7. The gradient-shaped rod according to claim 5, characterized in that, The arc-shaped push plate (601) is provided with an insertion hole for the threaded push rod (602) to be inserted.
8. The gradient rod body according to claim 4, characterized in that, The connecting sleeve (5) is configured as a square sleeve, and the steel bar pre-fixing member (6) includes a clamp (603). The side of the connecting sleeve (5) is provided with a through hole (505) through which the steel strip of the clamp (603) and the end pass.
9. The gradient rod body according to claim 8, characterized in that, The clamp (603) fixes the reinforcing bar to the corner of the connecting sleeve (5).
10. The gradient rod according to any one of claims 4-9, characterized in that, The pre-fixed upper reinforcing bar (2) is welded to the connecting sleeve (5); the pre-fixed middle reinforcing bar (3) is welded to the connecting sleeve (5); the pre-fixed lower reinforcing bar (4) is welded to the connecting sleeve (5).