Segmented prefabricated reinforcement cage with stabilizer

Abstract

The utility model discloses a segmentally-prefabricated reinforcement cage with a stabilizer. The segmentally-prefabricated reinforcement cage comprises a reinforcement cage body and the reinforcement cage stabilizer, the reinforcement cage body is a segmentally prefabricated reinforcement cage, and a reinforcement cage stabilizer is fixedly arranged at the starting end and / or the tail end of the reinforcement cage; the reinforcement cage stabilizer comprises longitudinal steel bars and annular steel plates used for being fixed to the starting end and / or the tail end of a reinforcement cage. And through multi-point welding with more than three longitudinal steel bars, circumferential constraint and longitudinal stabilization of the steel reinforcement cage are realized. Segmented prefabrication and up-down alignment welding are adopted in the device, the longitudinal reinforcing steel bar lap joint requirement is met, meanwhile, additional support is provided for all joints, and a longitudinal, circumferential and guiding multi-dimensional supporting structure is formed. Compared with the prior art, in the construction process, the deformation resistance of the reinforcement cage is enhanced, the construction process is simplified, the micro pile construction quality is remarkably improved, and accurate sinking and inserting and stability of the reinforcement cage are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of building foundation construction, in particular to a segmented prefabricated steel cage with a stabilizer. Background Art

[0002] Micropiles, a widely used foundation construction technology for building foundation reinforcement and soil support, rely heavily on the positioning and stability of the reinforcement cage. The cage is typically constructed by inserting a prefabricated steel mesh or steel frame into a precast concrete pile. To ensure the pile's bearing capacity and stability, the cage must remain vertical during insertion and precisely positioned during construction. However, existing techniques present multiple challenges in the installation and securing of micropile cages.

[0003] Traditional micropile construction typically involves directly sinking a whole steel cage. However, in confined spaces or complex terrain, the entire cage is difficult to operate and prone to deflection. To address this issue, the industry has gradually introduced segmented steel cages, which are prefabricated in sections and then assembled on site. However, this method also has significant drawbacks:

[0004] 1. When the steel cage is spliced ​​in sections, it is difficult to ensure longitudinal alignment and it is easy to be misaligned, which leads to a decrease in the overall stability of the steel cage and ultimately affects the bearing capacity of the pile.

[0005] 2. To improve the alignment and stability of the segmented steel cage, the prior art usually involves installing additional support structures inside the cage or using thickened stirrups or larger longitudinal bars. However, this increases construction difficulty and cost, and cannot effectively prevent the cage from shifting when inserted into the pile hole.

[0006] 3. Traditional positioning methods mostly rely on manual labor or simple auxiliary tools, and cannot provide sufficient positioning accuracy in pile foundation construction in complex terrain or at great depths. This causes the steel cage to easily tilt or deflect during sinking, affecting the overall quality of the pile.

[0007] In order to avoid the above problems, the industry has also tried to use guide devices or fixed rings for auxiliary positioning, but these methods are prone to new problems during the insertion of the steel cage: the installation and disassembly of the guide devices or fixed rings are cumbersome, and it is difficult to ensure the multi-dimensional stability of the steel cage in the longitudinal, circumferential and guiding directions, and there is still a risk of deviation or instability.

[0008] Therefore, how to ensure the precise positioning and multi-dimensional stability of the steel cage during micropile construction has become a technical problem to be solved by the present utility model. Utility Model Content

[0009] The technical problem solved by the present invention is to provide a segmented prefabricated steel cage with stabilizers to address the defects existing in the above-mentioned prior art, so as to solve the problems of easy deviation, instability and difficulty in splicing of the steel cage during construction proposed in the above-mentioned background technology.

[0010] In order to solve the above technical problems, the technical solutions adopted by the present invention are as follows:

[0011] A segmented prefabricated steel cage with a stabilizer comprises a steel cage body and a steel cage stabilizer;

[0012] The steel cage body is a prefabricated steel cage in sections, and a steel cage stabilizer is fixedly provided at the starting end and / or the end of the steel cage;

[0013] The steel cage stabilizer comprises longitudinal steel bars and annular steel plates for fixing at the starting and / or ending ends of the steel cage;

[0014] The annular steel plate includes an annular inner side surface and an annular outer side surface. More than three longitudinal steel bars are distributed on the annular inner side surface or the annular outer side surface of the annular steel plate. The longitudinal steel bars are fixedly connected to the annular steel plate; the steel cage is fixedly connected to the steel cage stabilizer by welding the longitudinal steel bars.

[0015] As a further solution of the present invention, the diameter of the annular steel plate is the same as the diameter of the steel cage.

[0016] As a further solution of the present invention, more than three longitudinal steel bars are evenly distributed on the annular inner side surface or the annular outer side surface of the annular steel plate.

[0017] As a further solution of the present invention, the longitudinal steel bars are fixedly connected to the annular steel plate by welding;

[0018] As a further solution of the present invention, steel bar positioning plates are evenly distributed on the annular inner side surface of the annular steel plate.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. The combination of annular steel plates, longitudinal reinforcements, and guide plates in this application forms a multi-dimensional support structure, effectively improving the stability of the reinforcement cage from a structural design perspective. The annular steel plate, which matches the diameter of the reinforcement cage, surrounds the outside of the cage and, through multi-point welding with three or more longitudinal reinforcements, achieves circumferential restraint and longitudinal stability of the cage. The longitudinal reinforcement provides continuous vertical support, synergizing with the circumferential support of the annular steel plate to enhance the cage's ability to resist deformation during the sinking process.

[0021] 2. By prefabricating the steel cage stabilizer in sections and welding them in alignment, a stable structure that runs through the top and bottom is formed. This segmented connection method not only meets the lap length requirements of the longitudinal steel bars, but also provides additional support at the connection of each section of the steel cage, thereby enhancing the overall stability of the steel cage. Compared with the existing technology, the multi-dimensional support structure of this application provides a more balanced reinforcement effect in the longitudinal, circumferential and guiding aspects, ensuring the accurate positioning and stable sinking of the steel cage in micropile construction, simplifying the construction process and improving construction quality.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0024] Figure 1 This is a structural diagram of the steel cage stabilizer of the utility model.

[0025] Figure 2 This is a structural diagram of the utility model's pile bottom reinforcement cage positioning and guiding device.

[0026] Figure 3 This is a structural diagram of the utility model when the steel cage stabilizer is combined with a standard section of steel cage.

[0027] Figure 4 This is a structural diagram of the end steel cage and the steel cage stabilizer.

[0028] Figure 5 for Figure 3 and Figure 4 Schematic diagram of the structure when connected through a steel cage stabilizer.

[0029] The reference numerals and names in the figures are as follows:

[0030] Steel cage stabilizer 1, longitudinal steel bars 2, annular steel plate 3, guide plate 4, annular cavity 5, steel bar positioning plate 6, steel cage 7, guide tube 8. DETAILED DESCRIPTION

[0031] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] See also Figure 1 —5. In an embodiment of the present invention, a segmented prefabricated steel cage with a stabilizer includes a steel cage body and a steel cage stabilizer 1; the steel cage body is a segmented prefabricated steel cage 7, and the steel cage stabilizer 1 is fixedly provided at the starting end and / or the end of the steel cage 7; the steel cage stabilizer 1 includes longitudinal steel bars 2 and an annular steel plate 3 for fixing to the starting end and / or the end of the steel cage 7; the annular steel plate 3 includes an annular inner side surface and an annular outer side surface, and the annular inner side surface or the annular outer side surface of the annular steel plate 3 has three or more longitudinal steel bars 2 distributed thereon, and the longitudinal steel bars 2 are fixedly connected to the annular steel plate 3;

[0033] The steel cage 7 is fixedly connected to the steel cage stabilizer 1 by welding the longitudinal steel bars 2. In an extended embodiment, the longitudinal steel bars 2 may also have a reserved overlap length portion in the longitudinal direction. The steel cage is fixedly connected to the steel cage stabilizer by welding the reserved overlap length portion of the longitudinal steel bars. In an extended embodiment, a positioning guide device may be used. The positioning guide device includes a guide plate 4. The annular steel plate 3 includes an annular cavity 5. The guide plate 4 is arranged in the longitudinal direction. The guide plate 4 is fixedly connected to the annular steel plate 3 or can be movably detached. When in use, a long rod known to those skilled in the art can be used as a guide rod. One end of the long rod is provided with a slot that matches the guide plate 4. The long rod is connected to the guide plate 4 by the slot, so that when the staff holds the other end of the long rod, they can adjust the guide plate 4's guide direction through the guide rod to achieve the use effect of guide adjustment. These are all extended embodiments known to those skilled in the art.

[0034] The steel cage stabilizer 1 includes a plurality of prefabricated steel cage stabilizers 1 in sections, each of which includes two aligned upper and lower steel cage stabilizers 1, which are fixedly connected by welding. The diameter of the annular steel plate 3 is the same as the diameter of the steel cage.

[0035] The annular inner side surface or the annular outer side surface of the annular steel plate 3 is evenly distributed with more than three longitudinal steel bars 2; and Figure 4 As shown, when the steel cage 7 is at the end of the insertion, the inner side wall of the bottom of the steel cage 7 can be welded with a guide tube 8 to facilitate the insertion and positioning, and the welding can be done by spot welding, which are all extended implementation methods known to ordinary technicians in this field.

[0036] The number of longitudinal reinforcement 2 is as follows Figure 1 As shown, preferably 6. The longitudinal reinforcement 2 is fixedly connected to the annular steel plate 3 by welding; the end section shape of the guide plate 4 is as shown Figure 2 As shown, it is preferably in a cross shape. The inner side of the annular steel plate 3 is evenly distributed with steel bar positioning plates 6, as shown in FIG. Figure 1 As shown, the steel bar positioning plate 6 is used to limit the positioning and installation position of the longitudinal steel bar 2. For example, during installation, it is convenient for the staff to know the position where the longitudinal steel bar 2 needs to be installed for easy installation; and, by combining the steel bar positioning plate 6 with the annular inner surface of the annular steel plate 3 to form a positioning angle, the effect of more stable positioning of the longitudinal steel bar 2 is achieved.

[0037] Example 1:

[0038] In a certain project, the construction space is limited and the clear height does not allow the use of large machinery. The traditional method of sinking and inserting a whole steel cage is not feasible and is prone to deflection, making it difficult to ensure the construction quality of the micropile foundation. To address these problems, the segmented prefabricated steel cage with stabilizer proposed in this application achieves precise positioning, stable installation and construction of the segmented prefabricated steel cage in a small space, ensuring construction quality.

[0039] In this project, the rebar cage was prefabricated in sections based on actual needs. Annular steel plates 3, with a diameter matching the cage's, were installed at both the starting and ending points of the prefabricated cage. Longitudinal rebars 2 were evenly distributed along the inner surface of the annular plates, which were then securely connected to the plates via multi-point welding. The annular plates 3 provide circumferential restraint for the cage, while the longitudinal rebars 2 provide continuous vertical support. The combination of these two forms a multi-dimensional support structure, enhancing the cage's stability.

[0040] During the process of sinking the steel cage 7, in order to ensure the verticality and positioning accuracy of the steel cage 7, a positioning guide device is installed at the end of the pile bottom. The positioning guide device includes a guide plate 4 arranged in the longitudinal direction, and is movably and detachably connected to the annular steel plate 3. The end cross-section of the guide plate 4 is cross-shaped, which cooperates with the preset guide rod to guide the steel cage to be inserted downward. Through the cooperation of the guide plate 4 and the guide rod, effective guidance is achieved during the insertion of the steel cage into the pile hole, preventing the steel cage 7 from tilting or offsetting, thereby ensuring that the steel cage 7 always remains vertical. The combination of the annular steel plate 3 and the guide plate 4 provides additional guiding force at the bottom of the pile, so that the steel cage 7 can be smoothly inserted into the pile hole and achieve precise positioning.

[0041] Next, the prefabricated steel cage 7 is inserted into the pile hole in sections and connected by aligned welding of the upper and lower annular steel plates 3, ensuring that the overlap length of the longitudinal reinforcement 2 meets construction specifications. The upper and lower cage stabilizers 1 are welded together, further enhancing the robustness of the cage's segmented connections and overall longitudinal stability, forming a continuous, stable structure. Thus, while the annular steel plates 3 circumferentially constrain the cage, the welded connections between the longitudinal reinforcement 2 and the prefabricated sections provide continuous vertical support for the cage, making it less susceptible to deformation or misalignment throughout the construction process.

[0042] In the specific application of this embodiment, the combination of annular steel plate 3, longitudinal reinforcement 2, and guide plate 4 achieves multi-dimensional support for the reinforcement cage in the longitudinal, circumferential, and guiding directions. This not only ensures smooth insertion of the reinforcement cage in a confined construction site, but also significantly improves its stability, avoiding common deviation and distortion problems during construction. Compared with traditional construction methods, this device demonstrates significant advantages in narrow terrain and complex soil conditions, significantly improving the construction quality of micropile foundations.

[0043] Example 2:

[0044] In the construction of pile foundations in ultra-deep foundation pits using an internal support system, in order to address the requirements for the use of mechanical equipment for internal support while meeting the construction quality, safety, and schedule requirements, micro-piles are used according to local conditions, and the steel cage is prefabricated in sections to ensure quality and efficient construction. Due to the complex construction conditions, the steel cage is required to maintain vertical stability during the pile foundation construction process, and the steel cage needs to be inserted in sections in deeper pile holes. To this end, this embodiment uses the segmented prefabricated steel cage with stabilizer of the present application, including a steel cage stabilizer 1 and a positioning guide device to ensure the precise positioning and stable installation of the steel cage.

[0045] First, the steel cage is prefabricated and segmented according to on-site construction needs. Steel stabilizers are installed at the beginning and end of each prefabricated section of the steel cage. The steel stabilizer is a ring-shaped steel plate 3 structure with the same diameter as the steel cage, which fits perfectly on the outside of the steel cage. Multiple longitudinal steel bars 2 are distributed on the inner side of the ring-shaped steel plate 3 and are fixed to the inner side of the longitudinal steel bars 2 of the steel cage by welding, thereby providing stable support for the steel cage in the circumferential direction. In this way, the longitudinal steel bars 2 provide continuous support in the vertical direction, further enhancing the stability of the steel cage.

[0046] Next, the prefabricated cage segments are inserted into the pile holes one by one, connected by aligning and welding the upper and lower steel stabilizers. The longitudinal reinforcement (2) of each cage segment meets the required overlap length and specifications during connection, and is securely fastened by welding the upper and lower annular steel plates (3), ensuring the overall stability of the cage segments. This segmented connection not only enhances the overall rigidity of the cage but also ensures longitudinal stability during construction, preventing misalignment and displacement during insertion.

[0047] To further ensure the positioning of the steel cage at the bottom of the pile, the positioning guide device of the present application is utilized. A positioning guide device is installed at the very beginning of the cage, i.e., at the end of the pile bottom. The guide device comprises a guide plate 4 and a guide rod. The guide plate 4 is disposed within the annular cavity 5 of the annular steel plate 3 and is arranged in the longitudinal direction and fixed to the outer side of the annular steel plate 3 by welding. The guide plate 4 assists the steel cage in being inserted and positioned at the bottom of the pile by cooperating with the guide rod, providing additional guiding force to ensure the verticality and accurate positioning of the cage.

[0048] During construction, the cage's insertion and lowering are accomplished manually with a combination of small-scale equipment. Assisted by a guide device, workers insert the prefabricated cage segments into the pile hole one by one. Stabilizers are used to align and weld each segment. The guide plate (4) works in conjunction with the guide rod to ensure the cage does not tilt or shift during insertion into the pile. The combination of the annular steel plate (3) and the guide device provides multi-dimensional support for the cage—longitudinal, circumferential, and directional—ensuring its stability even in soft soil.

[0049] This embodiment achieves precise positioning, stable connection and multi-dimensional support of the steel cage in the construction of micro pile foundation by adopting a combination of a steel cage stabilizer 1 and a positioning guide device, solves the problems of unstable insertion and difficult connection of traditional steel cages under complex geological conditions, simplifies the construction process, and significantly improves the construction quality of the micro pile foundation.

[0050] Example 3:

[0051] In this embodiment, in view of the requirement of using a micro pile foundation at the construction site and the need to carry out construction in a narrow space, a combination of a segmented prefabricated steel cage 7 and a steel cage stabilizer 1 is adopted to achieve efficient insertion and stable positioning of the steel cage 7.

[0052] First, the steel cage 7 is prefabricated and segmented into standard sections based on the actual project conditions. After each standard section of the steel cage 7 is completed, a steel cage stabilizer 1 is installed at its starting and end. The steel cage stabilizer 1 includes an annular steel plate 3 and longitudinal steel bars 2. The diameter of the annular steel plate 3 is consistent with the diameter of the steel cage 7. The longitudinal steel bars 2 are welded to the annular steel plate 3 to form a stable structure. A longitudinal steel bar limiting device, such as a steel bar positioning plate 6, can also be provided inside the steel cage stabilizer 1 to ensure that the longitudinal steel bars 2 are accurately positioned during installation.

[0053] During the splicing of the standard section steel cage 7, a certain splicing length is reserved for the steel cage 7 to meet the construction specification requirements for effective connection of the steel bars 2. The upper and lower standard section steel cages 7 are connected by welding to ensure that the splicing of the longitudinal steel bars 2 is firm.

[0054] To ensure accurate positioning of the segmented rebar cage 7 during insertion, a positioning guide device was used during construction. A guide plate 4, with a cross-shaped end section, was installed at the end of the standard segment rebar cage 7, mating with a guide rod. The guide rod engages with the guide plate 4 via a slot, allowing workers to guide the cage 7 during insertion, ensuring verticality and accuracy.

[0055] During construction, workers and small equipment collaborate to sequentially insert standard segments of the rebar cage 7 into the pile holes through segmented prefabrication and the use of positioning and guiding devices. After each segment of the rebar cage 7 is sunk into place, it is secured by welding the annular steel plate 3 and the longitudinal rebar 2, ensuring the overall stability and longitudinal support of the rebar cage 7. Furthermore, the positioning and guiding devices help the segmented rebar cage 7 maintain precise insertion direction, preventing deviation or misalignment.

[0056] This embodiment provides a simple and easy construction solution, especially in confined sites where mechanical equipment is difficult to use. By using prefabricated sections of the steel cage 7 and the steel cage stabilizer 1, combined with the guidance of the positioning guide device, the steel cage 7 can be quickly sunk and maintained securely in complex geological conditions, significantly improving the construction quality and efficiency of the micropile foundation.

[0057] Furthermore, in this embodiment, concrete is poured into the hole first, and then the steel cage 7 is inserted to ensure construction quality.

[0058] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0059] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be embraced within the present invention.

Claims

1. A segmented prefabricated steel cage with stabilizers, characterized by: It includes a steel cage body and a steel cage stabilizer; The steel cage body is a prefabricated steel cage in sections, and a steel cage stabilizer is fixedly provided at the starting end and / or the end of the steel cage; The steel cage stabilizer comprises longitudinal steel bars and annular steel plates for fixing at the starting and / or ending ends of the steel cage; The annular steel plate includes an annular inner side surface and an annular outer side surface. More than three longitudinal steel bars are distributed on the annular inner side surface or the annular outer side surface of the annular steel plate. The longitudinal steel bars are fixedly connected to the annular steel plate; the steel cage is fixedly connected to the steel cage stabilizer by welding the longitudinal steel bars.

2. The segmented prefabricated steel cage with stabilizer according to claim 1, characterized in that: The diameter of the annular steel plate is the same as the diameter of the steel cage.

3. The segmented prefabricated steel cage with stabilizer according to claim 1, characterized in that: More than three longitudinal steel bars are evenly distributed on the annular inner side surface or the annular outer side surface of the annular steel plate.

4. The segmented prefabricated steel cage with stabilizer according to claim 1, characterized in that: The longitudinal reinforcement is fixedly connected to the annular steel plate by welding.

5. The segmented prefabricated steel cage with stabilizer according to claim 1, characterized in that: Steel bar positioning plates are evenly distributed on the inner side of the annular steel plate.

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