Concrete pole with circumferential prestress

Abstract

The utility model discloses a concrete pole with circumferential prestress, which comprises a concrete pole main body, a plurality of longitudinal ribs arranged at equal angles around the central axis of the concrete pole main body and annular ribs arranged around the longitudinal ribs are arranged in a cavity of the concrete pole main body, and a plurality of fixing rings are arranged in a cavity formed by the longitudinal ribs in a surrounding manner. A plurality of fixing parts are arranged on the fixing ring in a sliding mode, fixing parts used for fixing longitudinal ribs are arranged on the fixing parts, the adjacent fixing parts are connected through first compressed springs, and the fixing ring has certain circumferential prestress and can play a certain buffering role in the longitudinal ribs due to self-weight and stress changes of the longitudinal ribs. Compared with the prior art, the concrete pole has the advantages that good supporting performance and stability are provided, large radial force can be borne, the probability that in the manufacturing process of the concrete pole, due to stress changes of the longitudinal ribs, the joints of the longitudinal ribs and the annular ribs fall off or a frame body of the concrete pole deforms or even is damaged is effectively reduced, and the concrete pole is not affected by manufacturing requirements such as the span of the concrete pole.

Description

Technical Field

[0001] The utility model relates to the field of building materials, in particular to a concrete rod with annular prestressing force. Background Art

[0002] Concrete rods, as a common material structure in construction projects, are mainly divided into ordinary reinforced concrete rods and prestressed concrete rods. Reinforced concrete rods are usually composed of a steel skeleton. In order to avoid premature cracks in reinforced concrete structures, high-strength steel bars and high-strength concrete are fully utilized to try to reduce the tensile stress generated by the components by applying external force before the concrete structure or components are subjected to the service load. Even concrete components in a compressive stress state are formed into prestressed concrete rods, which can reduce or offset the tensile stress of concrete caused by the load, and control the tensile stress of structural components within a smaller range, or even in a compressive state, to delay the appearance and development of concrete cracks, thereby improving the crack resistance and stiffness of the components. Prestressed concrete rods are widely used in bridge construction.

[0003] Traditional prestressed concrete rods are divided into fully prestressed and partially prestressed concrete components according to the value of their prestressing stress, and are divided into pre-tensioning and post-tensioning methods according to their manufacturing methods. In the manufacturing process of traditional prestressed concrete rods, the steel skeleton is usually composed of a staggered surrounding structure of multiple longitudinal bars and annular bars, and the annular bars are usually arranged around the outside of the longitudinal bars. In addition, since the span of the concrete rod is usually large, the steel skeleton composed of this structure is easy to bend due to the large span of multiple longitudinal bars and under its own weight, so that the annular bars and its longitudinal bars are required to be distributed more evenly and can withstand larger radial forces. However, concrete rods made of this steel skeleton structure usually apply stress to their longitudinal bars, and the annular bars are wrapped around the periphery of the longitudinal bars in a relaxed state without tension, so that the annular support of this concrete rod has certain defects and does not have annular prestress. Under the compressive stress state, the risk of the annular bars wrapped around the periphery of the longitudinal bars falling off and deforming is also increased. Utility Model Content

[0004] The utility model aims to provide a concrete rod with annular prestressing force, which can carry annular prestressing force and further improve the stability of longitudinal support.

[0005] The technical solution adopted by the utility model to solve the above problems is:

[0006] A concrete rod with annular prestressing comprises a concrete rod body, a cavity of which is provided with a plurality of longitudinal ribs arranged at equal angles around the central axis of the concrete rod body and annular ribs arranged around each longitudinal rib, a plurality of fixing rings are provided in the cavity formed by each of the longitudinal ribs, a plurality of fixing members are slidably provided on the fixing rings, a fixing portion for fixing the longitudinal ribs is provided on the fixing members, and adjacent fixing members are connected by a first compression spring.

[0007] Further: the fixing ring adopts an elastic structure and is provided with an opening, the opening being smaller than the distance between adjacent longitudinal ribs, the fixing piece placed at the opening end is connected through a second compression spring provided at both ends of the opening, and the second compression spring and the first compression spring are placed on the fixing ring and slide on the same track.

[0008] Further: the fixing member includes a connecting seat and a fixing seat, the fixing seat is slidably arranged on the fixing ring, the fixing part is integrally connected to the connecting seat, and the connecting seat is rotatably arranged on the fixing seat.

[0009] Furthermore: the fixing part adopts a telescopic structure, which includes a seat body, a first connecting seat and a second connecting seat. The first connecting seat and the second connecting seat are respectively slidably arranged on both sides of the seat body and connected by a tension spring.

[0010] Further: the seat body adopts a clamp or a clamp ring.

[0011] Further: a plurality of ribs are adapted to be arranged on the wall surface where the fixing portion contacts the longitudinal ribs.

[0012] Further: the fixing ring adopts a split structure, including a first fixing ring and a second fixing ring, the fixing piece is slidably arranged on the second fixing ring, and the first fixing ring is connected to the second fixing ring via a detachable structure.

[0013] Furthermore: the annular ribs surrounding each longitudinal rib in the cavity of the concrete rod body are spirally wound.

[0014] Furthermore: the first compression spring and the second compression spring are both provided with an adaptive telescopic sleeve on the outside.

[0015] Compared with the prior art, the utility model has the following advantages and effects:

[0016] The utility model discloses a concrete rod with annular prestress, wherein a first compression spring is connected between adjacent fixing members, so that the fixing ring has a certain annular prestress, and can play a certain buffering role for the longitudinal reinforcement due to its own weight and stress change, and the fixing rings are evenly distributed in the cavity formed by the longitudinal reinforcement on the concrete rod body, and the annular reinforcement arranged around each longitudinal reinforcement provides good support and stability for the steel bar skeleton structure, and can withstand a large radial force, and can effectively reduce the probability of the connection between the longitudinal reinforcement and the annular reinforcement of the concrete rod falling off or the deformation or even damage of the frame due to the stress change of the longitudinal reinforcement during the manufacturing process, and is not affected by the manufacturing requirements such as the span, meets different use conditions and use requirements, and further improves the bearing capacity of the concrete rod, and at the same time, the fixing ring is also convenient for installation and fixation at different positions, and the staggered distribution of the fixing ring and the annular reinforcement can further reduce the usage of the fixing ring and the annular reinforcement material, and further reduce the production and use costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a concrete rod with annular prestressing according to an embodiment of the utility model.

[0018] Figure 2 It is a schematic structural diagram of a fixing ring and a fixing member thereof according to an embodiment of the utility model.

[0019] Figure 3-5 It is a partial enlarged view of the fixing ring and the fixing member of the embodiment of the utility model.

[0020] Figure 6 It is an enlarged view of the local structure of the first compression spring or the second compression spring and its telescopic sleeve in the embodiment of the utility model.

[0021] Figure numbers: concrete rod 100, longitudinal rib 101, annular rib 102, fixing ring 1, slide groove 11, opening 12, first fixing ring 13, second fixing ring 14, fixing piece 2, fixing portion 21, rib 211, connecting seat 22, first connecting seat 221, second connecting seat 222, seat body 223, tension spring 224, fixing seat 23, first compression spring 31, second compression spring 32, bolt member 4, telescopic sleeve 5. DETAILED DESCRIPTION

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and through examples. The following examples are provided to explain the present invention, but the present invention is not limited to the following examples.

[0023] See also Figure 1-2The present embodiment relates to a concrete rod 100 with annular prestress, comprising a concrete rod 100 body, a cavity of which is provided with a plurality of longitudinal ribs 101 arranged at equal angles around the central axis of the concrete rod 100 body and annular ribs 102 arranged around each longitudinal rib 101, a plurality of fixing rings 1 are provided in the cavity formed by each of the longitudinal ribs 101, a plurality of fixing members 2 are slidably provided on the fixing rings 1, a fixing portion 21 for fixing the longitudinal ribs 101 is provided on the fixing member 2, and adjacent fixing members 2 are connected by a first compression spring 31.

[0024] Specifically in this embodiment, see Figure 1 As shown, the plurality of fixing rings 1 are evenly distributed in the cavity formed by the longitudinal ribs 101, and the plurality of fixing members 2 arranged thereon are adapted to be adapted and fixed with the longitudinal ribs 101 of the same amount through the fixing parts 21, and the plurality of fixing members 2 are adapted and slid on the adapting slide grooves 11 arranged on the fixing rings 1. During the manufacturing process of the concrete rod 100 by the pre-tensioning method, the longitudinal ribs 101 are subjected to external forces, so that the fixing parts 21 of the plurality of fixing members 2 on the fixing rings 1 are subjected to certain longitudinal stress, thereby making the plurality of fixing members 2 adapt and slide on the fixing rings 1 according to the stress changes of the longitudinal ribs 101. The specific structure of the fixing ring 1 can be seen in Figure 2 As shown, the first compression spring 3 is connected between the adjacent fixing members 2, so that the fixing ring 1 has a certain annular prestress, which can play a certain buffering role for the longitudinal ribs 101 due to their own weight and stress changes, and the fixing rings 1 are evenly distributed in the cavity formed by the longitudinal ribs 101 on the main body of the concrete rod 100, and cooperate with the annular ribs 102 arranged around each longitudinal rib 101 to provide good support and stability for the steel skeleton structure, which can withstand a large radial force and can effectively reduce the concrete rod 100 in the production process. During the process, the stress change of the longitudinal rib 101 leads to the probability of the connection between the longitudinal rib 101 and the annular rib 102 falling off or the deformation or even damage of the frame, and is not affected by the manufacturing requirements such as the span, so it meets different use conditions and needs, and further improves the bearing capacity of this concrete pole 100. At the same time, the fixing ring 1 is also convenient for installation and fixation at different positions. The staggered distribution of the fixing ring 1 and the annular rib 102 can also further reduce the use of the fixing ring 1 and the annular rib 102 materials, and further reduce the production and use costs.

[0025] The fixing ring 1 adopts an elastic structure, and is provided with an opening 12, which is smaller than the distance between adjacent longitudinal ribs 101. The fixing member 2 disposed at the end of the opening 12 is connected by a second compression spring 32 disposed at both ends of the opening 12. The second compression spring 32 and the first compression spring 31 are placed on the fixing ring 1 and slide on the same track. For details, see Figure 3 As shown, the second compression spring 32 is placed at both ends of the opening 12 in the slide groove 11 provided on the fixing ring 1 and is adapted to be fixed and slides in the same track as the first compression spring 31. The fixing piece 2 placed at the end of the opening 12 slides in the slide groove 11 of the fixing ring 1 through the first compression spring 31 and the second compression spring 32 connected at both ends. The fixing ring 1 with an elastic structure and an opening 12 type setting can make this kind of concrete rod 100 have a certain bearing capacity when an external force is applied to its longitudinal ribs 101 during the manufacturing process. At the same time, its tension can change to a certain extent within a certain range and play a certain buffering role, thereby reducing the damage and stress concentration to the longitudinal ribs 101 and the annular ribs 102, further improving the connectivity and stability of this steel skeleton structure, and the opening 12 is smaller than the distance between adjacent longitudinal ribs 101, ensuring that the plurality of fixing pieces 2 on the fixing ring 1 can evenly fix the longitudinal ribs 101 by a corresponding number, while also ensuring the structural stability of this kind of fixing ring 1, reducing the deformation or breakage of the fixing ring 1.

[0026] See also Figure 4 The fixing member 2 includes a connecting seat 22 and a fixing seat 23. The fixing seat 23 is slidably arranged on the fixing ring 1. The fixing portion 21 is integrally connected to the connecting seat 22. The connecting seat 22 is rotatably arranged on the fixing seat 23. The fixing member 2 formed with such a structure can fix the longitudinal rib 101 through the fixing portion 21 and can adapt to the self-weight of the longitudinal rib 101 and the stress changes in different directions. The connecting seat 22 can be adaptively rotated on its fixing seat 23, thereby increasing the fixing stability and adjustment flexibility of the fixing member 2, being able to adapt to the stress changes in different directions and making adaptive adjustments through its rotation, thereby reducing the damage to the structure of the fixing member 2 caused by concentrated stress, improving the stability of use and extending its service life.

[0027] See also Figure 5The fixing portion 21 adopts a telescopic structure, which includes a seat body 223, a first connecting seat 221 and a second connecting seat 222. The first connecting seat 221 and the second connecting seat 222 are respectively slidably arranged on both sides of the seat body 223 and connected by a tension spring 224. Specifically, the longitudinal ribs 101 fixed by the fixing portion 21 on the connecting seat 22 undergo a certain stress change under the action of an external force. The first connecting seat 221 and the second connecting seat 222 can slide adaptively on both sides of the seat body 223 according to their specific stress changes, and can be stretched to a certain extent under the action of the tension spring 224. The structure can be retracted and the stability during the expansion and contraction process can be ensured, thereby reducing the single-point pressure of the longitudinal rib 101 on the connecting seat 22, and reducing the degree of wear, deformation and even damage to the connecting seat 22, thereby improving the stability and durability of the structure. At the same time, the fixing part 21 adopting such a telescopic structure has a certain fixing stability when fixing the longitudinal rib 101, and the deformation amount produced by the fixing part 21 is not enough to affect the use. In addition, in order to ensure good use effect and stability, the tension spring 224 is located in the cavity of the seat body 223 to avoid damage to the tension spring 224 during use.

[0028] The seat body 223 adopts a clamp or a clamp ring, and an appropriate clamp or clamp ring structure can be selected according to the use requirements, which is convenient for the installation, fixation and disassembly of the longitudinal rib 101, facilitates adjustment and further improves the installation efficiency and use stability.

[0029] A plurality of ribs 211 are adapted to be arranged on the wall surface where the fixing portion 21 contacts the longitudinal rib 101. The ribs 211 can further increase the overall strength and stability of the fixing portion 21, and at the same time can also play a certain anti-slip and wear-resistant effect, reduce the probability of the longitudinal rib 101 falling off, improve the applicability and durability of the fixing portion 21, and appropriately extend its service life.

[0030] The fixing ring 1 adopts a split structure, including a first fixing ring 13 and a second fixing ring 14. The fixing piece 2 is slidably arranged on the second fixing ring 14. The first fixing ring 13 is connected to the second fixing ring 14 through a detachable structure. The first fixing ring 13 is installed on the second fixing ring 14 through a bolt 4 or a detachable structure connected by a thread, so that it is convenient for the installation, disassembly and replacement of several fixing pieces 2 on the second fixing ring 14, and it is also convenient for inspection and maintenance. An appropriate number of fixing pieces 2 can be installed according to the use requirements with an appropriate number of longitudinal ribs 101, which meets different use requirements and improves applicability and practicality.

[0031] The annular ribs 102 spirally surround each longitudinal rib 101 in the cavity of the concrete rod 100 body. The annular ribs 102 spirally surround each longitudinal rib 101 can further improve the bearing capacity and compressive resistance of the concrete rod 100 with annular prestress, improve ductility and toughness, have certain seismic resistance and further reduce the use of the annular ribs 102, ensure stability and reduce the cost of the structure, and facilitate the design and construction of the overall structure.

[0032] See also Figure 6 The first compression spring 31 and the second compression spring 32 are both sleeved with an adaptive telescopic sleeve 5 on the outside. The telescopic sleeve 5 can adopt a telescopic structure such as a bellows, which can play a certain protective role for the first compression spring 31 and the second compression spring 32, improve the stability and service life of use, and reduce the phenomenon that the first compression spring 31 and the second compression spring 32 are deformed or even damaged during use, thereby affecting the use effect.

[0033] The above contents described in this specification are merely examples of the present utility model. Those skilled in the art of the present utility model may make various modifications or additions to the specific embodiments described, or replace them in similar ways, as long as they do not deviate from the contents of the present utility model specification or exceed the scope defined in the claims, they shall all fall within the protection scope of the present utility model.

Claims

1. A concrete rod with annular prestress, comprising a concrete rod body, a plurality of longitudinal ribs arranged at equal angles around the central axis of the concrete rod body and annular ribs arranged around each longitudinal rib in a cavity, characterized in that: A plurality of fixing rings are arranged in the cavity formed by the longitudinal ribs, a plurality of fixing members are slidably arranged on the fixing rings, a fixing portion for fixing the longitudinal ribs is arranged on the fixing members, and adjacent fixing members are connected by a first compression spring.

2. A concrete rod with annular prestressing according to claim 1, characterized in that: The fixing ring adopts an elastic structure and is provided with an opening, which is smaller than the distance between adjacent longitudinal ribs. The fixing piece placed at the opening end is connected through a second compression spring provided at both ends of the opening. The second compression spring and the first compression spring are placed on the fixing ring and slide on the same track.

3. A concrete rod with annular prestress according to claim 1, characterized in that: The fixing member comprises a connecting seat and a fixing seat, the fixing seat is slidably arranged on the fixing ring, the fixing part is integrally connected to the connecting seat, and the connecting seat is rotatably arranged on the fixing seat.

4. A concrete rod with annular prestressing according to claim 3, characterized in that: The fixing part adopts a telescopic structure, which includes a seat body, a first connecting seat and a second connecting seat. The first connecting seat and the second connecting seat are respectively slidably arranged on both sides of the seat body and connected by a tension spring.

5. A concrete rod with annular prestressing according to claim 4, characterized in that: The seat body adopts a hoop or a clamping ring.

6. The concrete rod with annular prestressing according to claim 1, characterized in that: A plurality of ribs are adapted to be arranged on the wall surface where the fixing portion contacts the longitudinal ribs.

7. The concrete rod with annular prestressing according to claim 1, characterized in that: The fixing ring adopts a split structure, including a first fixing ring and a second fixing ring, the fixing member is slidably arranged on the second fixing ring, and the first fixing ring is connected to the second fixing ring via a detachable structure.

8. The concrete rod with annular prestressing according to claim 1, characterized in that: The annular ribs surrounding each longitudinal rib in the cavity of the concrete rod body are spirally wound.

9. The concrete rod with annular prestressing according to claim 1, characterized in that: The first compression spring and the second compression spring are both sleeved with an adaptive telescopic sleeve on the outside.

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