Large-diameter gas film dome spherical warehouse dome arrangement structure

Abstract

The application discloses a large-diameter gas film dome spherical warehouse dome arrangement structure, which comprises a dome body, a double-ring beam is arranged on the upper portion of the dome body, the warehouse upper building is connected through the double-ring beam, the distribution of force flow is changed, the portion where the lower portion of the double-ring beam and the top warehouse wall of the dome body intersect is a ring beam reinforcing area, and a plurality of ring reinforcing ribs are arranged along the height direction of the ring beam reinforcing area. The application changes the distribution of force flow through the arrangement of the double-ring beam, so that the force is uniformly transmitted to the dome, the ring beam reinforcing area ensures the smooth transmission of stress, and the stress concentration of the local dome is improved, thereby solving the problem of stress concentration in the existing connecting structure for the upper portion of the spherical warehouse dome and the warehouse upper building.

Description

Technical Field

[0001] This invention belongs to the field of building engineering technology and relates to the arrangement structure of a large-diameter air-supported membrane dome spherical chamber. Background Technology

[0002] A common coal storage structure is an air-supported reinforced concrete dome silo. This type of silo is a large-span spatial structure. The dome section uses a thin-shell cross-section of uniform thickness. The upper structure is generally divided into a steel structure and a concrete frame structure. Furthermore, due to the tension of the conveyor belt, the load may act on different positions of the dome from different directions. The 66-meter diameter hemispherical dome serves as the roof of the silo and also as the support for the upper structure. It has advantages such as good structural mechanical properties, good thermal insulation performance, short construction period, environmental friendliness, and aesthetics.

[0003] In the past, the connection between the superstructure and the dome of the spherical silo was achieved by setting rectangular stiffening ribs in the horizontal and vertical directions of the superstructure columns. This method easily leads to stress concentration at the four corners of the rectangle, i.e., at the column bases. The stress is concentrated in the deformation stress concentration area, which stretches the deformation stress concentration area and causes the stress to accumulate, resulting in cracks and affecting construction safety. Summary of the Invention

[0004] The purpose of this invention is to provide a large-diameter air-supported membrane dome spherical silo arrangement structure, which solves the problem of stress concentration in existing connection structures between the upper part of the spherical silo dome and the silo building.

[0005] The technical solution adopted in this invention is a large-diameter air-supported membrane dome spherical storage dome arrangement structure, including a dome body, with double ring beams set on the upper part of the dome body. The double ring beams connect the upper structure of the storage, changing the distribution of force flow. The part below the double ring beams that intersects with the top wall of the dome body is the ring beam reinforcement zone. Several circumferential reinforcing ribs are set in the ring beam reinforcement zone along the height direction.

[0006] The invention is further characterized in that,

[0007] The double-ring beam includes an outer ring beam set at the top of the dome body, and an inner ring beam set inside the outer ring beam. The center of the dome body is coaxial with the centers of the outer and inner ring beams, and a gap is left between the outer and inner ring beams.

[0008] Several openings are continuously connected between the outer ring beam and the inner ring beam, and stiffening ribs are provided around the openings in both the longitudinal and transverse directions.

[0009] The circumferential reinforcement zone begins below the inner ring beam and is horizontally positioned to ensure smooth stress transfer.

[0010] The concrete strength grade of the double ring beam and the reinforced zone of the ring beam is C35.

[0011] Circumferential reinforcing bars and shear reinforcements are added to the reinforced zone of the ring beam.

[0012] The beneficial effects of this invention are as follows: This invention sets up a double ring beam and a ring beam reinforcement zone in the dome of the spherical silo, and the upper steel structure column base is connected to the dome through an externally wrapped column base, which changes the path of force flow and greatly improves the stress performance of the spherical silo dome, thereby making the stress of the dome more reasonable and solving the problem of stress concentration in the existing connection structure between the upper part of the spherical silo dome and the silo building. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the dome layout structure and the assembly structure of the large-diameter air-supported membrane dome spherical pod of the present invention.

[0014] Figure 2 This is a schematic diagram of the dome arrangement structure of the large-diameter air-supported membrane dome spherical chamber of the present invention;

[0015] Figure 3 This is a top view of the dome arrangement structure of the large-diameter air-supported membrane dome spherical chamber of the present invention;

[0016] Figure 4 This is a cross-sectional view of the dome arrangement structure of the large-diameter air-supported membrane dome spherical chamber of the present invention.

[0017] In the diagram, 1. Outer ring beam, 2. Inner ring beam, 3. Stiffening rib, 4. Opening, 5. Circumferential reinforcement zone, 6. Dome body. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0019] The present invention relates to a large-diameter air-supported membrane dome spherical dome arrangement structure, such as... Figure 1 and Figure 2 As shown, it includes a dome body 6, which is a large-diameter air-supported membrane dome spherical chamber. A double-ring beam is set on the upper part of the dome body 6. The dome body 6 is connected to the building above the chamber by arranging double-ring beams, thereby changing the distribution of force flow and making the force evenly transmitted to the dome. The part below the double-ring beams that intersects with the top chamber wall of the dome body 6 is the ring beam reinforcement zone 5. The ring beam reinforcement zone 5 is provided with several circumferential reinforcing ribs along the height direction.

[0020] The double-ring beam includes an outer ring beam 1 set at the top of the dome body 6, and an inner ring beam 2 set inside the outer ring beam 1. The center of the dome body 6 is coaxial with the centers of the outer ring beam 1 and the inner ring beam 2, and a gap is left between the outer ring beam 1 and the inner ring beam 2.

[0021] like Figure 3 As shown, several openings 4 are continuously connected between the outer ring beam 1 and the inner ring beam 2. Stiffening ribs 3 are provided in both the longitudinal and transverse directions around the openings 4. The coal unloading openings 4 on the dome body 6, combined with the arrangement of stiffening ribs 3, meet the requirements of the process equipment layout, solve the stress concentration of the openings, and smoothly transition to compressive stress.

[0022] The ring beam reinforcement zone 5 starts below the inner ring beam 2 and is set horizontally to ensure smooth stress transmission, thereby improving local stress concentration in the dome. The ring beam reinforcement zone 5 improves the tensile and shear resistance of the ring beam and the dome by adding circumferential reinforcing bars and shear bars.

[0023] The concrete strength grade of the double-ring beam and the reinforced zone 5 of the ring beam is C35. The local compressive stress under the double-ring beam does not exceed the compressive strength of the concrete, and the local tensile stress at the bottom is resisted by the bottom circumferential reinforcing ribs to resist local deformation. The circumferential stress on the outer ring beam 1 outside the dome is all circumferential tensile stress, and the distribution of circumferential tensile stress on the outer side gradually decreases from both sides of the outer ring beam outwards, all of which are less than the tensile strength of the concrete. The inner side of the inner ring beam 2 is under circumferential compressive stress, and the stress values ​​are all less than the compressive strength of the concrete. Since the compressive strength of concrete is much greater than its tensile strength, this part under compression also makes better use of the material.

[0024] Example 1

[0025] One embodiment of the large-diameter air-supported membrane dome spherical silo structure of this invention involves a dome body (section 6) with a thin-shell cross-section of uniform thickness. Due to the tension of the conveyor belt, the load on the upper structure may act from different directions at different locations on the dome. If the frame columns act directly on the thin shell of the dome, it would be like applying a concentrated force to an eggshell, causing damage to the dome structure. In this case, the steel structure and trestle of the upper building act as external loads on the stiffening ribs (3) between the upper ring beams and the double ring beams, changing the path of force flow and thus making the stress on the dome more rational. The steel column bases of the upper building are connected to the double ring beams of the dome through externally encased column bases, ensuring that the column bases of the upper structure are rigid and improving the safety of the superstructure.

[0026] Example 2

[0027] One embodiment of the large-diameter air-supported membrane dome spherical pod arrangement structure of the present invention is as follows: the pod building and the dome are connected by a double-ring beam arrangement. The outer ring beam 1 has a diameter of 7m and a width of 600mm; the inner ring beam 2 has a diameter of 3.5m and a width of 500mm.

[0028] Example 3

[0029] The concrete strength grade of the dome body 6 and the double ring beam is C35. The height of the ring beam reinforcement zone 5 is increased from 350mm to 600mm from the dome. The thickening of the ring beam reinforcement zone 5 is smooth and the transition length is 1000mm. The reinforcement of the thickened zone is based on the original dome reinforcement. The circumferential reinforcement in the ring beam reinforcement zone is reinforced with circumferential steel bars, which is equivalent to adding a layer of circumferential stress reinforcement in the direction of the main tensile stress of the dome. In addition, closed stirrups are used in the ring beam reinforcement zone 5 to improve the shear resistance of the reinforcement zone. The upper steel structure column base adopts an external rigid column base connected to the dome. The height of the external concrete of the column base is 2.5 times the height of the steel column, which ensures that the upper steel column transmits internal forces to the external concrete and the dome. The external column base is directly anchored to the bottom of the double ring beam through vertical longitudinal reinforcement.

[0030] The working principle of the large-diameter air-supported membrane dome spherical silo arrangement structure of the present invention is as follows: the distribution of force flow is changed by the arrangement of double ring beams, so that the force is transmitted to the dome more evenly. The stiffening ribs 3 and openings 4 between the double ring beams are used to meet the needs of the process equipment arrangement. The arrangement of stiffening ribs 3 ensures that they are continuous to the double ring beams. A ring beam reinforcement zone 5 is set at the part where the double ring beams intersect with the spherical silo dome wall to ensure the smooth transmission of stress and improve the local stress concentration of the dome.

[0031] The working process of the large-diameter air-supported membrane dome spherical silo structure of this invention is as follows: the double-ring beams uniformly transfer the load of the silo building and the connected conveyor belt corridor bridge, which are subject to uneven stress, to the spherical silo dome. The double-ring beams exhibit circumferential tensile stress, and a reinforced zone is set at the bottom of the double-ring beams for smooth transition, solving the stress concentration problem. The stiffening ribs 3 greatly reduce the local buckling of the dome. The stiffening ribs are subjected to tension at the top, compression at the bottom, and compression on both sides. Except for the point of local concentrated force, where the compressive strength is relatively high, the rest are all less than the compressive strength of concrete.

Claims

1. A large-diameter air-supported membrane dome spherical chamber dome arrangement structure, characterized in that, Includes the dome body (6), the upper part of the dome body (6) is provided with double ring beams, the double ring beams are arranged to connect the upper building of the warehouse, and the distribution of force flow is changed. The part where the double ring beams intersect with the top warehouse wall of the dome body (6) is the ring beam reinforcement area (5), and the ring beam reinforcement area (5) is provided with several circumferential reinforcing ribs along the height direction. The double ring beam includes an outer ring beam (1) set at the top of the dome body (6), an inner ring beam (2) set inside the outer ring beam (1), the center of the dome body (6) is coaxial with the center of the outer ring beam (1) and the center of the inner ring beam (2), and a gap is left between the outer ring beam (1) and the inner ring beam (2); Several openings (4) are continuously provided between the outer ring beam (1) and the inner ring beam (2), and stiffening ribs (3) are provided in both the longitudinal and transverse directions around the openings (4). The ring beam reinforcement zone (5) starts below the inner ring beam (2) and is set horizontally to ensure the smooth transmission of stress.

2. The large-diameter air-supported membrane dome spherical dome arrangement structure according to claim 1, characterized in that, The concrete strength grade of the double ring beam and the ring beam reinforcement zone (5) is C35.

3. The large-diameter air-supported membrane dome spherical dome arrangement structure according to claim 1, characterized in that, The ring beam reinforcement zone (5) is reinforced with circumferential reinforcing bars and shear bars.

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