Prestressed building silo, prestressed silo wall and construction method thereof

Abstract

The application discloses a prestressed warehouse, a prestressed warehouse wall and a construction method thereof, and relates to the technical field of warehouse building structures. The prestressed warehouse wall comprises warehouse wall concrete, an outer protective layer, prestressed vertical ribs, horizontal prestressed tendons, vertical prestressed tendons and an inner lining plate, which are arranged along the height direction of the warehouse wall. After the two are tensioned and anchored, the warehouse wall forms a bidirectional pre-pressing stress structure. The prestressed warehouse uses the prestressed warehouse wall. The construction method comprises the following steps: foundation construction, warehouse wall formwork and steel bar construction, prestressed duct and anchorage device installation, warehouse wall concrete pouring and maintenance, vertical and horizontal prestressed tendon tensioning, duct grouting, anchorage treatment, inner lining plate and auxiliary facility installation and air tightness detection. The prestressed warehouse can improve the crack resistance, overall rigidity, air tightness, moisture resistance and durability of the warehouse wall, and is suitable for three-dimensional warehouse building of grain, powder and granular bulk materials.

Description

Technical Field

[0001] This invention relates to the field of warehouse building structure technology, specifically to a prestressed warehouse, a prestressed warehouse wall, and a construction method thereof. Background Technology

[0002] Multi-story warehouses are a type of storage building that utilizes vertical space for bulk material storage. They offer advantages such as high land utilization, concentrated storage capacity, ease of mechanized transport, and centralized management. During operation, the warehouse walls must withstand horizontal lateral pressure, vertical pressure, temperature and humidity effects from the bulk materials, as well as dynamic loads from repeated loading and unloading. For bulk materials such as grains, the lateral pressure increases with the storage height, and the lower part of the warehouse walls is prone to significant tensile stress and bending moment.

[0003] In the prior art, such as Chinese invention patent application CN101818583A (published on September 1, 2010), a multi-story warehouse for storing bulk grain is disclosed, including a warehouse floor, warehouse walls, inter-level warehouse floor slabs, a warehouse roof slab, beams, columns, vertical transport equipment, multi-point unloading conveyor equipment, inlet distribution chutes, and outlet chutes. The vertical transport equipment is located at the end of the multi-story warehouse for vertically lifting the grain and transporting it to the warehouse roof. The multi-point unloading conveyor equipment is fixed to the warehouse roof and connected to the inlet distribution chutes. The grain enters the warehouse through the inlet distribution chutes that pass through the inter-level warehouse floor slabs. The outlet chutes are located at the inter-level warehouse floor slabs and penetrate the warehouse walls. Most of the grain can flow out of the warehouse by gravity, while the remainder is discharged using a grain suction machine combined with gravity-flow pipes. The warehouse walls adopt a prestressed hollow concrete slab system, including composite columns, prestressed hollow concrete slabs, and outer walls. The prestressed hollow concrete slab is placed on the inner side of the wall to resist the lateral pressure of the grain, and its two ends are connected to the composite column; there is an air gap between the outer wall and the prestressed hollow concrete slab, which plays a role in thermal insulation.

[0004] For example, Chinese invention patent application CN120844743A (published on October 28, 2025) discloses a post-tensioned prestressed precast floor slab structure and its construction method, relating to the field of building construction technology. This precast floor slab structure includes a concrete body with top and bottom reinforcing bars inside. Stirrups are distributed in a straight line at equal intervals inside the concrete body, and the surfaces of the stirrups are welded to the surfaces of the top and bottom reinforcing bars. Unbonded prestressed reinforcing bars are provided between the bottom and top reinforcing bars, arranged at equal intervals inside the concrete body. Anchor bolt assemblies are provided at both ends of the unbonded prestressed reinforcing bars to fix them, and the anchor bolt assemblies are embedded in both ends of the concrete body. This invention also provides a construction method for a post-tensioned prestressed precast floor slab structure. Using this invention, the problems of prestress loss, insufficient construction accuracy, and the need to improve structural durability and crack resistance in existing technologies can be solved.

[0005] Furthermore, in the practical application of existing multi-story warehouses, ordinary reinforced concrete warehouse walls are prone to cracking under long-term lateral pressure, leading to a decrease in structural durability and airtightness. Larger warehouse wall thicknesses result in greater self-weight and material consumption, increasing the foundation load. Weak areas are easily formed at warehouse wall joints, anchorage nodes, discharge ports, and inspection ports. Simultaneously, existing construction methods lack a systematic process for prestressed tendon placement, tensioning sequence, grouting and anchor sealing, and airtightness testing, affecting construction quality and operational safety.

[0006] Therefore, there is an urgent need to develop a prestressed building cell with reasonable structural stress, good crack resistance, high air tightness, and controllable construction quality, as well as its special cell wall and construction method. Summary of the Invention

[0007] To solve the above technical problems, the present invention provides a prestressed silo wall, including an outer protective layer, silo wall concrete, prestressed vertical ribs, vertical prestressed tendons, horizontal prestressed tendons, inner lining plate, vertical anchorage and horizontal anchorage; The outer protective layer is set on the outside of the concrete silo wall; The inner lining plate is installed on the inner side of the silo wall concrete. The prestressed vertical ribs are arranged along the height of the silo wall; The vertical prestressing tendons are installed along the height of the silo wall and are tensioned and anchored by vertical anchors; The horizontal prestressed tendons are arranged along the horizontal direction of the silo wall and are tensioned and anchored by horizontal anchors. The horizontal and vertical prestressing tendons form a bidirectional prestressing system with cross-arrangement within the outer protective layer.

[0008] Furthermore, the horizontal prestressing tendons are arranged in layers along the height direction of the silo wall, and the spacing between two adjacent layers of horizontal prestressing tendons is set according to the distribution of the lateral pressure of the material in the silo along the height direction.

[0009] Furthermore, the horizontal prestressing tendons may be unbonded prestressing tendons, bonded prestressing tendons, steel strands, finely rolled threaded steel bars, or prestressed steel wire bundles.

[0010] Furthermore, the vertical prestressing tendons are disposed within the prestressing vertical ribs or within the outer protective layer between adjacent prestressing vertical ribs.

[0011] Furthermore, the vertical prestressing tendons may be bonded prestressing tendons or unbonded prestressing tendons.

[0012] Furthermore, horizontal prestressed ducts are pre-embedded in the concrete of the silo wall, and horizontal prestressed tendons are inserted into the horizontal prestressed ducts. Anchor sealing devices are provided at the ends of the horizontal prestressed tendons and the horizontal anchors.

[0013] Furthermore, the upper and lower ends of the vertical prestressing tendons are both anchored by vertical anchors.

[0014] Furthermore, the prestressed chamber wall is provided with reserved grouting holes and grouting pipes, which are connected to the ducts of the horizontal prestressing tendons or the ducts of the vertical prestressing tendons.

[0015] Furthermore, the prestressed vertical ribs and the silo wall concrete are integrally formed.

[0016] Furthermore, the inner lining plate is any one of metal lining plate, polymer lining plate, wear-resistant lining plate, and composite moisture-proof lining plate.

[0017] Furthermore, the anchor sealing device is disposed on the outside of the horizontal anchor and the vertical anchor, and the anchor sealing device includes one or more of the following: anchor sealing concrete, anchor sealing mortar, anti-corrosion coating or sealing cover plate.

[0018] The present invention also provides a prestressed building cell, comprising: A supporting foundation is provided above the foundation; A foundation anchoring device is provided at the connection between the foundation and the prestressed silo wall; A prestressed silo wall is provided, which is arranged around the perimeter of the building silo. A beam is provided on the top of the prestressed silo wall, and the beam is connected to the prestressed silo wall. Ventilation holes are provided on the top surface or upper wall of the building warehouse.

[0019] Furthermore, the prestressed building silo also includes a discharge port, which is located on the side of the building silo. The discharge port can be connected to a cone hopper, a guide pipe, or a discharge control device. The silo wall around the discharge port should be reinforced to reduce the adverse effect of the opening on the overall stress performance of the silo wall.

[0020] Furthermore, the prestressed building compartment also includes an inspection door, which is installed on the wall of the prestressed compartment.

[0021] Furthermore, the foundation anchoring device includes anchoring bars, embedded anchor plates, anchor sleeves, or grouting anchoring holes. The lower end of the vertical prestressing tendons can be anchored in the foundation anchoring device, thereby enhancing the overall connection performance between the bottom of the silo wall and the foundation.

[0022] The present invention also provides a construction method for a prestressed building cell, comprising the following steps: Step S1: Conduct construction preparation and surveying and setting out to determine the location of the foundation, prestressed trough wall, prestressed vertical ribs and anchoring nodes; Step S2: Construction of foundation and supporting foundation. After the foundation construction is completed, foundation anchoring devices are installed at the connection between the foundation and the prestressed silo wall. Step S3: Erect the prestressed silo wall formwork and tie the prestressed steel bars, prestressed vertical rib steel bars and structural steel bars. Step S4: Install horizontal prestressing tendon ducts, vertical prestressing tendon ducts, horizontal anchorages, vertical anchorages, reserved grouting holes and grouting pipes; Step S5: Pour the silo wall concrete and cure it. Prestressing can only be carried out after the silo wall concrete reaches the design strength. Step S6: Perform prestressing tensioning; preferably, tension and anchor the vertical prestressing tendons first, and then tension and anchor the horizontal prestressing tendons; the vertical prestressing tendons can be tensioned in a zoned, graded, or symmetrical manner; the horizontal prestressing tendons can be tensioned in a graded manner from bottom to top or from the middle to the upper and lower sides. During the tensioning process, the tension force, elongation value, and anchorage shrinkage should be controlled. Step S7: Grouting the ducts; After tensioning, grout the horizontal and vertical prestressing tendon ducts through the grouting holes and grouting pipes. Step S8: Perform anchor sealing treatment and quality inspection. Perform anchor sealing treatment on horizontal and vertical anchors. After the anchor sealing is completed, check the appearance of the anchors, the tightness of the anchor sealing, and the prestressed construction records. Step S9: Install the inner lining plate, inspection door, discharge port, ventilation hole and auxiliary facilities; Step S10: Conduct commissioning and acceptance testing and airtightness testing. After construction is completed, inspect the appearance of the building warehouse structure, warehouse wall cracks, anchoring nodes, discharge port, ventilation holes, inspection doors and inner lining plates, and conduct airtightness, moisture resistance or trial operation tests according to the storage requirements.

[0023] Furthermore, in step S6, the vertical prestressing tendons are tensioned using a zoned, graded, and symmetrical tensioning method.

[0024] Furthermore, in step S6, the horizontal prestressed tendons are tensioned in stages along the height of the silo wall from bottom to top or from the middle to the upper and lower sides.

[0025] Furthermore, in step S7, grouting is performed using vacuum-assisted grouting, gravity grouting, or pressure grouting. After grouting is completed, the reserved grouting holes and grouting pipes are sealed.

[0026] Furthermore, in step S8, the anchor sealing treatment includes anchor anti-corrosion treatment, anchor sealing concrete construction, and repair of the outer protective layer.

[0027] Compared with existing technologies, the advantages and effects of this application are as follows: 1. This application forms a bidirectional prestressed force system by arranging horizontal and vertical prestressed tendons crosswise in the silo wall concrete and tensioning and anchoring them. This puts the silo wall concrete in a bidirectional prestressed state, which can effectively offset or reduce the tensile stress generated by the lateral pressure of bulk materials and temperature shrinkage deformation, greatly delaying or preventing the appearance of cracks and improving the structural durability.

[0028] 2. The prestressed vertical ribs arranged along the height of the silo wall in this application work together with the horizontal and vertical prestressed tendons, which can significantly improve the out-of-plane stiffness and integrity of the silo wall, improve the stress mode of the silo wall under lateral pressure, and are suitable for multi-story silos and multi-compartment composite structures with high silo capacity and large lateral pressure.

[0029] 3. The bidirectional prestressed system of this application can effectively control the width of the silo wall cracks. Combined with the metal lining, polymer lining or composite moisture-proof lining installed on the inner side, it can greatly improve the airtightness and moisture-proof performance of the inner side of the silo, reduce the risk of grain or bulk materials getting damp and moldy, and facilitate the implementation of green grain storage technologies such as circulating fumigation.

[0030] 4. The warehouse wall structure and construction method described in this application are applicable to circular warehouses, rectangular warehouses, and polygonal warehouses, as well as to modular multi-story warehouse structures formed by combining multiple warehouse cells, and have strong versatility and adaptability.

[0031] 5. This application clarifies the complete construction process from foundation construction, prestressed duct installation, concrete curing, graded tensioning, duct grouting, anchor sealing and airtightness testing. In particular, it prioritizes the order of tensioning vertical prestressing tendons first and then horizontal prestressing tendons, and adopts a zoned, graded, and symmetrical tensioning method, which helps to ensure the uniformity and accuracy of prestressing application and improve construction quality and structural safety.

[0032] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the preferred embodiments of this application are described in detail below with reference to the accompanying drawings.

[0033] The above and other objects, advantages and features of this application will become more apparent to those skilled in the art from the following detailed description of specific embodiments in conjunction with the accompanying drawings. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application 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 some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0035] in: Figure 1 This is a schematic plan view of a prestressed silo wall; Figure 2 This is a schematic diagram of the vertical prestressing tendon arrangement for a prestressed silo wall; Figure 3 This is a schematic diagram of the horizontal prestressing tendon arrangement in a prestressed silo wall; Figure 4 This is a cross-sectional schematic diagram of a prestressed building cell. Figure 5 A schematic cross-sectional view of a foundation anchoring device for a prestressed building silo. Figure 6 This is a flowchart of a construction method for a prestressed concrete building.

[0036] Explanation of reference numerals in the attached drawings: 1-Outer protective layer; 2-Compartment wall concrete; 201-Horizontal prestressing duct; 202-Grouting hole; 203-Grouting pipe; 3-Prestressing vertical rib; 4-Vertical prestressing tendon; 401-Vertical prestressing duct; 5-Horizontal prestressing tendon; 6-Inner lining plate; 7-Vertical anchor; 8-Horizontal anchor; 801-Anchor sealing device; 9-Foundation; 10-Supporting foundation; 11-Foundation anchoring device; 12-Beam and slab; 13-Ventilation hole. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. In the following description, specific details such as specific configurations and components are provided merely to help fully understand the embodiments of this application. Therefore, those skilled in the art should understand that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of this application. In addition, for clarity and brevity, descriptions of known functions and structures are omitted in the embodiments.

[0038] It should be understood that the phrase "an embodiment" or "this embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of this application. Therefore, "an embodiment" or "this embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0039] Furthermore, reference numerals and / or letters may be repeated in different examples within this application. Such repetition is for the purpose of simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or settings discussed.

[0040] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist simultaneously. The term " / and" describes another type of relationship between related objects, indicating that two relationships can exist. For example, A / and B can mean: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the related objects before and after it have an "or" relationship.

[0041] In this article, the term "at least one" is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, "at least one of A and B" can mean: A exists alone, A and B exist simultaneously, or B exists alone.

[0042] It should also be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion.

[0043] Example 1 This embodiment describes a prestressed silo wall.

[0044] Please refer to Figure 1 As shown, Figure 1 This is a plan view of a prestressed silo wall.

[0045] A prestressed silo wall includes an outer protective layer 1, silo wall concrete 2, prestressed vertical ribs 3, vertical prestressed tendons 4, horizontal prestressed tendons 5, inner lining plate 6, vertical anchorage 7, and horizontal anchorage 8. The silo wall concrete 2 is the main load-bearing part of the silo wall. The outer protective layer 1 is set on the outside of the silo wall concrete 2 to improve the waterproof, anti-corrosion and durability performance of the silo wall. The inner lining plate 6 is installed on the inner side of the silo wall concrete 2 to improve the wear resistance, moisture resistance and airtightness of the inner side of the silo. The prestressed vertical ribs 3 are installed along the height of the silo wall and are integrally connected to the silo wall concrete 2. The prestressed vertical ribs 3 can be arranged according to the silo wall height and the lateral pressure of the material inside the silo. The vertical prestressing tendons 4 are set along the height of the silo wall and are tensioned and anchored by vertical anchors 7 to apply vertical prestress to the silo wall and reduce vertical cracks and shrinkage cracks in the silo wall. The horizontal prestressed tendons 5 are arranged along the horizontal direction of the silo wall and are tensioned and anchored by the horizontal anchors 8 to apply horizontal prestress to the silo wall and resist the lateral tensile stress caused by the side pressure of the bulk materials. The horizontal prestressing tendons 5 and the vertical prestressing tendons form a bidirectional prestressing system with cross-arrangement within the outer protective layer 1.

[0046] The technical advantages of this embodiment are: it provides a prestressed silo wall with a clear structure and well-defined stress distribution. Through the specific layers and connections of the outer protective layer, silo wall concrete, prestressed vertical ribs, vertical prestressing tendons, horizontal prestressing tendons, and inner lining plate, a two-way prestressed system is formed. This silo wall can independently serve as the core load-bearing component of a building silo, exhibiting good crack resistance, high rigidity, moisture resistance, and wear resistance, and is easy to design and manufacture in a standardized manner.

[0047] Example 2 Based on Example 1, this example discloses a further design of a prestressed silo wall.

[0048] Please refer to Figure 2-3 As shown, Figure 2 This is a schematic diagram of the vertical prestressing tendon arrangement for a prestressed silo wall; Figure 3 This is a schematic diagram of the horizontal prestressing tendon arrangement in a prestressed silo wall.

[0049] Furthermore, the horizontal prestressing tendons 5 are arranged in layers along the height direction of the silo wall, and the spacing between two adjacent layers of horizontal prestressing tendons 5 is set according to the distribution of the lateral pressure of the material in the silo along the height direction.

[0050] Furthermore, the horizontal prestressing tendon 5 may be an unbonded prestressing tendon, a bonded prestressing tendon, a steel strand, a finely rolled threaded steel bar, or a prestressed steel wire bundle.

[0051] Furthermore, the vertical prestressing tendons 4 are disposed within the prestressing vertical ribs 3, or within the outer protective layer 1 between adjacent prestressing vertical ribs 3.

[0052] Furthermore, the vertical prestressing tendon 4 can be a bonded prestressing tendon or an unbonded prestressing tendon.

[0053] Furthermore, a horizontal prestressed duct 201 is pre-embedded in the concrete wall 2, and a horizontal prestressed tendon 5 is inserted in the horizontal prestressed duct 201. An anchor sealing device 801 is provided at the ends of the horizontal prestressed tendon 5 and the horizontal anchor 8.

[0054] Furthermore, the upper and lower ends of the vertical prestressed tendon 4 are both anchored by vertical anchors 7.

[0055] Furthermore, the prestressed silo wall is provided with reserved grouting holes 202 and grouting pipes 203. The reserved grouting holes 202 and grouting pipes 203 are connected to the channels of the horizontal prestressing tendons 5 or the channels of the vertical prestressing tendons 4, so that the prestressing tendons, the grouting body and the silo wall concrete 2 form an integral whole.

[0056] Furthermore, the prestressed vertical ribs 3 and the silo wall concrete 2 are integrally formed. Vertical prestressing tendons 4, ordinary steel bars, or anchoring components can be installed within the prestressed vertical ribs 3. The prestressed vertical ribs 3 enhance the local stiffness of the silo wall and improve its stress performance under the lateral pressure of materials.

[0057] Furthermore, the inner lining plate 7 is any one of a metal lining plate, a polymer lining plate, a wear-resistant lining plate, or a composite moisture-proof lining plate.

[0058] Furthermore, the sealing device 801 is disposed on the outside of the horizontal anchor 8 and the vertical anchor 7. The sealing device 801 includes one or more of the following: sealing concrete, sealing mortar, anti-corrosion coating or sealing cover plate, for protecting the ends of the horizontal anchor 8 and the horizontal prestressed tendon 5.

[0059] The technical advantages of this embodiment are as follows: Horizontal prestressing tendons are arranged in layers along the height of the silo wall, and the spacing between adjacent layers is adjusted according to the material's lateral pressure as it changes with height (smaller spacing in the lower and middle sections, larger spacing in the upper sections), making the prestressing application more consistent with the actual stress distribution and improving material utilization efficiency. Horizontal prestressing ducts are pre-embedded within the silo wall concrete, and grouting holes and feeding pipes are provided, enabling a bonded prestressing system. This allows the prestressing tendons to form an integral whole with the concrete, improving the silo wall's ultimate bearing capacity and crack resistance. The prestressed vertical ribs are integrally formed with the silo wall concrete, enhancing the local stiffness of the silo wall and providing a reliable anchorage and force transmission path for the vertical prestressing tendons. Sealing devices are installed on the outside of the horizontal and vertical anchorages, effectively protecting the anchorages and extending the structure's service life.

[0060] Example 3 Based on Example 1, this example discloses a prestressed building cellar.

[0061] Please refer to Figure 4-5 As shown, Figure 4 This is a cross-sectional schematic diagram of a prestressed building cell. Figure 5 This is a cross-sectional schematic diagram of a foundation anchoring device for a prestressed building.

[0062] A prestressed building cellar, comprising: A support base 10 is provided above the foundation 8. A foundation anchoring device 11 is provided at the connection between the foundation 8 and the prestressed silo wall; A prestressed silo wall is provided, which is arranged around the perimeter of the building silo. A beam 12 is provided on the top of the prestressed silo wall, and the beam 12 is connected to the prestressed silo wall. Ventilation hole 13, wherein the ventilation hole 13 is provided on the top surface or upper wall of the building warehouse.

[0063] Furthermore, the prestressed building silo also includes a discharge port, which is located on the side of the building silo. The discharge port can be connected to a cone hopper, a guide pipe, or a discharge control device. The silo wall around the discharge port should be reinforced to reduce the adverse effect of the opening on the overall stress performance of the silo wall.

[0064] Furthermore, the prestressed building compartment also includes an inspection door, which is installed on the wall of the prestressed compartment.

[0065] Furthermore, the foundation anchoring device 11 includes anchoring steel bars, embedded anchor plates, anchoring sleeves, or grouting anchoring holes. The lower end of the vertical prestressing tendon 4 can be anchored in the foundation anchoring device 11, thereby enhancing the overall connection performance between the bottom of the silo wall and the foundation 8.

[0066] The technical effects of this embodiment are as follows: The prestressed building silo forms a horizontal and vertical bidirectional prestressed system in the silo wall, which can effectively improve the crack resistance, overall stiffness, airtightness, moisture resistance and durability of the silo wall, and is suitable for storage scenarios of large capacity, multiple compartments and high lateral pressure bulk materials.

[0067] Example 4 Based on Example 3, this example discloses a construction method for a prestressed building cellar.

[0068] Please refer to Figure 6 As shown, Figure 6 This is a flowchart of a construction method for a prestressed concrete building.

[0069] This invention also provides a construction method for a prestressed building cell, comprising the following steps: Step S1: Conduct construction preparation and surveying and setting out to determine the positions of foundation 8, prestressed silo wall, prestressed vertical rib 3 and anchoring nodes; Step S2: Construction of foundation 8 and supporting foundation 10. After the foundation 8 is constructed, foundation anchoring device 11 is installed at the connection between foundation 8 and prestressed silo wall. Step S3: Erect the prestressed silo wall formwork and tie the prestressed steel bars, the prestressed vertical ribs 3 steel bars and structural steel bars; Step S4: Install the horizontal prestressing tendon duct 201, the vertical prestressing tendon 4 duct, the horizontal anchor 8, the vertical anchor 7, the reserved grouting hole 202, and the grouting pipe 203; Step S5: Pour the silo wall concrete 2 and cure it. Prestressing can only be carried out after the silo wall concrete 2 reaches the design strength. Step S6: Perform prestressing tensioning; preferably, tension and anchor the vertical prestressing tendons 4 first, and then tension and anchor the horizontal prestressing tendons 5; the vertical prestressing tendons can be tensioned in a zoned, graded, or symmetrical manner; the horizontal prestressing tendons 5 can be tensioned in a graded manner from bottom to top or from the middle to the upper and lower sides. During the tensioning process, the tension force, elongation value, and anchorage shrinkage should be controlled; Step S7: Grouting the ducts; After tensioning, grout the ducts of the horizontal prestressing tendons duct 201 and the vertical prestressing tendons 4 through the grouting hole 202 and the grouting pipe 203. Step S8: Perform anchor sealing treatment and quality inspection. Perform anchor sealing treatment on horizontal anchor 8 and vertical anchor 7. After the anchor sealing is completed, check the appearance of the anchor, the tightness of the anchor sealing and the prestressed construction records. Step S9: Install the inner lining plate 7, inspection door, discharge port, ventilation hole 13 and auxiliary facilities; Step S10: Conduct commissioning and acceptance testing and airtightness testing. After construction is completed, inspect the appearance of the building warehouse structure, warehouse wall cracks, anchoring nodes, discharge port, ventilation holes, inspection doors and inner lining plates, and conduct airtightness, moisture resistance or trial operation tests according to the storage requirements.

[0070] Furthermore, in step S6, the vertical prestressing tendons are tensioned using a zoned, graded, and symmetrical tensioning method.

[0071] Furthermore, in step S6, the horizontal prestressed tendons 5 are tensioned in stages along the height direction of the silo wall from bottom to top or from the middle to the upper and lower sides.

[0072] Furthermore, in step S7, grouting is performed using vacuum-assisted grouting, gravity grouting, or pressure grouting. After grouting is completed, the reserved grouting hole 202 and the grouting pipe 203 are sealed.

[0073] Furthermore, in step S8, the anchor sealing treatment includes anchor anti-corrosion treatment, anchor sealing concrete construction, and repair of the outer protective layer.

[0074] The technical effects of this embodiment are as follows: The reliable connection between the foundation, supporting foundation, foundation anchoring device, and prestressed silo wall ensures effective transmission of vertical prestress to the foundation, forming a complete vertical force transmission path. The inclusion of auxiliary facilities such as discharge ports, ventilation holes, and inspection doors meets the functional requirements of the multi-story silo, and the reinforcement of openings reduces adverse effects on the overall load-bearing performance of the silo wall. The construction method, which involves tensioning the vertical prestressing tendons first and then the horizontal prestressing tendons, avoids disturbance to the vertical anchoring during horizontal tensioning. The use of zoned, graded, symmetrical tensioning, and dual control of tension force and elongation ensures the accuracy and uniformity of prestress application. The application of vacuum-assisted grouting technology improves the fullness and density of the grouting in the ducts, reducing prestress loss. Finally, airtightness and moisture-proof testing provide reliable assurance for the safe storage of grain or materials in the multi-story silo, ensuring the quality of the delivered project.

[0075] The above description is merely a preferred embodiment of the present invention and does not limit the scope of protection of the present invention. Various modifications and variations are possible with respect to the present invention. Any changes, modifications, substitutions, integrations, and parameter alterations to these embodiments within the spirit and principles of the present invention fall within the scope of protection of the claims of the present invention.

Claims

1. A prestressed silo wall, characterized in that, include: Outer protective layer (1), silo wall concrete (2), prestressed vertical ribs (3), vertical prestressed tendons (4), horizontal prestressed tendons (5), inner lining plate (6), vertical anchorage (7) and horizontal anchorage (8); The outer protective layer (1) is provided on the outside of the silo wall concrete (2); The inner lining plate (6) is provided inside the concrete (2) of the silo wall; The prestressed vertical ribs (3) are set along the height direction of the silo wall; The vertical prestressing tendons (4) are set along the height of the silo wall and are tensioned and anchored by vertical anchors (7); The horizontal prestressed tendons (5) are set along the horizontal direction of the silo wall and are tensioned and anchored by horizontal anchors (8); The horizontal prestressing tendons (5) and the vertical prestressing tendons form a bidirectional prestressing system with cross-arrangement within the outer protective layer (1).

2. The prestressed silo wall according to claim 1, characterized in that, The horizontal prestressing tendons (5) are arranged in layers along the height direction of the silo wall, and the spacing between two adjacent layers of horizontal prestressing tendons (5) is set according to the distribution of the lateral pressure of the material in the silo along the height direction.

3. The prestressed silo wall according to claim 1 or 2, characterized in that, The silo wall concrete (2) is also pre-embedded with horizontal prestressed ducts (201), and horizontal prestressed tendons (5) are inserted in the horizontal prestressed ducts (201). The ends of the horizontal prestressed tendons (5) and the horizontal anchors (8) are provided with sealing anchor devices (801).

4. The prestressed silo wall according to claim 3, characterized in that, The prestressed chamber wall is provided with a reserved grouting hole (202) and a grouting pipe (203), which are connected to the duct of the horizontal prestressing tendon (5) or the duct of the vertical prestressing tendon (4).

5. The prestressed silo wall according to claim 1, characterized in that, The prestressed vertical ribs (3) and the silo wall concrete (2) are integrally formed structures.

6. The prestressed silo wall according to claim 3, characterized in that, The sealing device (801) is located outside the horizontal anchor (8) and the vertical anchor (7), and the sealing device (801) includes one or more of sealing concrete, sealing mortar, anti-corrosion coating or sealing cover plate.

7. A prestressed concrete building warehouse, characterized in that, A supporting foundation (10) is provided above the foundation (8). A foundation anchoring device (11) is provided at the connection between the foundation (8) and the prestressed silo wall; The prestressed silo wall as described in any one of claims 1-6, wherein the prestressed silo wall is arranged to enclose the perimeter of the building silo, and a beam slab (12) is provided on the top of the prestressed silo wall, wherein the beam slab (12) is connected to the prestressed silo wall; Ventilation holes (13) are provided on the top surface or upper wall of the building warehouse.

8. The prestressed concrete building cellar according to claim 7, characterized in that, The prestressed building silo also includes a discharge port, which is located on the side of the building silo and can be connected to a cone hopper, a guide pipe, or a discharge control device.

9. The prestressed concrete building cellar according to claim 8, characterized in that, The basic anchoring device (11) includes anchoring steel bars, pre-embedded anchor plates, anchoring sleeves or grouting anchoring holes.

10. The construction method of the prestressed concrete building cell according to any one of claims 7-9, characterized in that, Includes the following steps: Step S1: Conduct construction preparation and surveying and setting out to determine the location of the foundation (8), prestressed silo wall, prestressed vertical ribs (3) and anchoring nodes; Step S2, Construction of foundation (8) and support foundation (10). After the foundation (8) is completed, foundation anchoring device (11) is set at the connection between foundation (8) and prestressed silo wall. Step S3: Erect the prestressed silo wall formwork and tie the prestressed steel bars, the prestressed vertical ribs (3) steel bars and structural steel bars; Step S4: Install the horizontal prestressing tendon duct (201), the vertical prestressing tendon (4) duct, the horizontal anchor (8), the vertical anchor (7), the reserved grouting hole (202), and the grouting pipe (203). Step S5: Pour the silo wall concrete (2) and cure it. Prestressing can only be carried out after the silo wall concrete (2) reaches the design strength. Step S6: Perform prestressing tensioning; preferably, tension and anchor the vertical prestressing tendons (4) first, and then tension and anchor the horizontal prestressing tendons (5); Step S7: Grouting the ducts; After tensioning, grout the ducts of the horizontal prestressing tendons (201) and the vertical prestressing tendons (4) through the grouting holes (202) and the grouting pipes (203); Step S8: Perform anchor sealing treatment and quality inspection. Perform anchor sealing treatment on horizontal anchor (8) and vertical anchor (7). After the anchor sealing is completed, check the appearance of the anchor, the tightness of the anchor sealing and the prestressed construction record. Step S9: Install the inner lining plate (7), inspection door, discharge port, ventilation hole (13) and auxiliary facilities; Step S10: Conduct commissioning and acceptance testing and airtightness testing. After construction is completed, inspect the appearance of the building warehouse structure, warehouse wall cracks, anchoring nodes, discharge port, ventilation holes, inspection doors and inner lining plates, and conduct airtightness, moisture resistance or trial operation tests according to the storage requirements.

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