Annular uniformly-distributed load loading device for simulating internal side pressure of circular structure

Abstract

The invention relates to an annular uniformly-distributed load loading device for simulating internal lateral pressure of a circular structure, which comprises a base plate fixed on a reaction wall of a structural laboratory, and a semicircular inner ring reinforcing beam coaxially arranged with a to-be-tested component model is fixed on the front side plate surface of the base plate. A plurality of loading beams which are radially distributed by taking the axis of the inner ring reinforcing beam as the center are fixed on the inner ring reinforcing beam, the loading beams are uniformly distributed at intervals along the circumferential direction of the inner ring reinforcing beam, the length of each loading beam extends along the radial direction of the inner ring reinforcing beam, and an outer ring reinforcing beam is further arranged between one ends, far away from the inner ring reinforcing beam, of the loading beams; a hydraulic loading cylinder is arranged at the end, away from the inner ring reinforcing beam, of each loading beam, and a force transmission plate matched with the inner wall of the to-be-tested component model is arranged at the loading end of each hydraulic loading cylinder. The invention provides an annular uniformly distributed load loading device for simulating the internal side pressure of a circular structure, which is based on a structure laboratory and is used for outputting annular uniformly distributed loads to the circular structure.

Description

Technical Field

[0001] The invention relates to a structural test loading device of a structural test room, in particular to a circumferentially uniformly distributed load loading device for simulating the internal lateral pressure of a circular structure. Background Art

[0002] In actual production life, we often encounter some circular structures that are subject to outward pressure from the inside, such as silos, tower buildings, arch dams, curved slope support structures and oil tanks. When designing the structural strength of these circular structures, it is necessary to simulate and analyze the forces during their actual use in order to design safe structures that meet the requirements of use.

[0003] However, the loading devices in the prior art are usually linear loading devices, which cannot output loading forces distributed along an arc, and therefore cannot effectively simulate loading of these circular structures. Summary of the invention

[0004] The purpose of the present invention is to provide a circumferentially uniformly distributed load loading device for simulating the internal lateral pressure of a circular structure and used for outputting a circumferentially uniformly distributed load to a circular structure based on a structural laboratory.

[0005] In order to solve the above technical problems, the technical solution of a circumferentially uniformly distributed load loading device for simulating the internal lateral pressure of a circular structure in the present invention is as follows: A circumferentially uniformly distributed load loading device for simulating the internal lateral pressure of a circular structure comprises a base plate for fixing on a reaction wall of a structural laboratory, a semicircular inner ring reinforcement beam coaxially arranged with a model of a component to be tested is fixed on the front side plate surface of the base plate, a plurality of loading beams radially distributed with the axis of the inner ring reinforcement beam as the center are fixed on the inner ring reinforcement beam, each loading beam is evenly spaced along the circumference of the inner ring reinforcement beam, the length of each loading beam extends radially along the inner ring reinforcement beam, an outer ring reinforcement beam is further arranged between the ends of each loading beam away from the inner ring reinforcement beam, a hydraulic loading cylinder is arranged at the end of each loading beam away from the inner ring reinforcement beam, and a force transmission plate adapted to the inner wall of the model of the component to be tested is arranged at the loading end of the hydraulic loading cylinder.

[0006] Furthermore, the component model to be tested is a semicircular structure, and both ends of the component model to be tested are fixed to the reaction wall through component fixing brackets.

[0007] Furthermore, the outer ring reinforcement beam includes a plurality of outer ring reinforcement beam sections, and two ends of each outer ring reinforcement beam section are respectively welded and fixed between two adjacent loading beams.

[0008] Furthermore, one end of each loading beam away from the outer ring reinforcement beam is welded and fixed to the outer periphery of the inner ring reinforcement beam.

[0009] Furthermore, each loading beam includes an inner loading beam section and an outer loading beam section telescopically coordinated with the inner loading beam section, the hydraulic loading cylinder is arranged on the outer loading beam section, the outer ring loading beam is arranged between the outer ring loading beam sections, the inner loading beam section is fixed on the inner ring loading beam, and a telescopic adjustment cylinder is arranged between the inner loading beam section and the outer loading beam section for adjusting the telescopic movement of the outer loading beam section relative to the inner loading beam section.

[0010] Furthermore, each loading beam includes an inner loading beam section and an outer loading beam section detachably connected to the inner loading beam section by bolts, a loading beam fixing bracket is fixed between one end of the inner loading beam section away from the inner ring reinforcement beam, a height-adjustable fixed bracket leg is arranged at the bottom of the loading beam fixing bracket, a first roller that contacts and rolls with the reaction force pedestal is arranged at the bottom of the fixed bracket leg; a height-adjustable reinforcement beam leg is arranged at the bottom of the outer ring reinforcement beam, a second roller that contacts and rolls with the reaction force pedestal is arranged at the bottom of the reinforcement beam leg.

[0011] Furthermore, the circumferentially uniformly distributed load loading device includes one model of inner loading beam section and at least two models of outer loading beam sections. Different models of outer loading beam sections are respectively fixed on the corresponding outer ring reinforcement beams, and different models of outer loading beam sections have different lengths.

[0012] Furthermore, the loading beam fixing bracket includes an upper fixing bracket located on the upper side of the inner loading beam section and a lower fixing bracket located on the lower side of the inner loading beam section. Both the upper fixing bracket and the lower fixing bracket are trapezoidal structural frames. The upper fixing bracket is welded and fixed to the upper side of each inner loading beam section, and the lower fixing bracket is welded and fixed to the lower side of each inner loading beam section.

[0013] The beneficial effects of the present invention are as follows: when the circumferentially uniformly distributed load loading device in the present invention is used, it is used based on the structure test laboratory. The structure laboratory includes a horizontally arranged reaction pedestal and a reaction wall arranged vertically with the reaction pedestal. When in use, the base plate is fixed on the reaction wall, the piston rod of the hydraulic loading cylinder on each loading beam is extended, and the force transmission plate contacts the inner wall of the test component model to be tested and transmits force. A plurality of circumferentially uniformly arranged loading beams ensure that each hydraulic loading cylinder can output a circumferentially uniformly distributed load to the test component model from the inside to the outside to simulate the stress condition of the test component model when it is actually used. The reaction force received by the loading beam is gathered on the inner ring reinforcement beam of the semicircular structure, and then borne by the reaction wall, thereby ensuring the stability of the structural test. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present disclosure will become readily understood. In the accompanying drawings, several embodiments of the present disclosure are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein: Figure 1 It is a use state diagram of an embodiment of the annular uniformly distributed load loading device of the present invention; Figure 2 yes Figure 1 Stereoscopic image of Figure 3 It is a schematic diagram of the coordination of the fixed support legs, the reinforcing beam legs and the reaction pedestal in the present invention; Figure 4 It is a schematic diagram of the coordination of two adjacent loading beams in the present invention; 1. Base plate; 2. Inner ring reinforcement beam; 3. Loading beam fixing bracket; 3-1. Upper side fixing bracket; 3-2. Lower side fixing bracket; 4. Outer ring reinforcement beam; 4-1. Outer ring reinforcement beam section; 5. Loading beam; 5-1. Inner side loading beam section; 5-2. Outer side loading beam section; 6. Hydraulic loading cylinder; 7. Force transfer plate; 8. Model of component to be tested; 9. Reaction wall; 10. Reaction pedestal; 11. Loading beam connecting section; 12. Fixed bracket legs; 13. Component fixed bracket; 14. First roller; 15. Second roller; 16. Reinforcement beam legs. DETAILED DESCRIPTION

[0015] In order to facilitate the understanding of the present invention, the present invention is described in more detail below in conjunction with the accompanying drawings and specific embodiments. Preferred embodiments of the present invention are provided in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0016] It should be noted that, unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0017] An embodiment of a circumferentially uniformly distributed load loading device for simulating the internal lateral pressure of a circular structure in the present invention is as follows: Figures 1 to 4 As shown: This annular uniformly distributed load loading device is used in the structural laboratory relying on the reaction pedestal 10 and reaction wall 9 of the structural laboratory. The structural laboratory includes a horizontally arranged reaction pedestal 10 and a reaction wall 9 arranged vertically to the reaction pedestal. There are multiple mounting holes distributed on the reaction pedestal and the reaction wall. The structural laboratory belongs to the existing technology and its structure will not be described in detail here.

[0018] The circumferential uniformly distributed load loading device includes a vertically arranged base plate 1. When in use, the base plate 1 is fixed on the front wall of the reaction wall 9 of the structural laboratory. A semicircular inner ring reinforcement beam 2 with an axis extending in the up-down direction is fixed on the front plate surface of the base plate. When in use, the inner ring reinforcement beam 2 is coaxially arranged with the component model 8 to be tested.

[0019] A plurality of loading beams 5 are welded and fixed on the outer periphery of the inner ring reinforcement beam 2 and are radially distributed with the axis of the inner ring reinforcement beam as the center. The loading beams 5 are evenly spaced along the circumference of the inner ring reinforcement beam, and the length of each loading beam extends along the radial direction of the inner ring reinforcement beam. An outer ring reinforcement beam 4 is arranged between the ends of each loading beam away from the inner ring reinforcement beam, and a hydraulic loading cylinder 6 is arranged at the end of each loading beam away from the inner ring reinforcement beam, i.e., the outer end. The loading end of the hydraulic loading cylinder 6 is provided with a force transmission plate 7 adapted to the inner wall of the component model 8 to be tested. The force transmission plate 7 in this embodiment is an arc-shaped plate.

[0020] In this embodiment, the component model 8 to be tested is a semicircular structure, and both ends of the component model to be tested are fixed to the reaction wall 9 through the component fixing bracket 13. The outer ring reinforcement beam 4 includes a plurality of outer ring reinforcement beam segments 4-1, and the outer ring reinforcement beam segment 4-1 is a straight beam structure, and both ends of each outer ring reinforcement beam segment 4-1 are respectively welded and fixed between two corresponding adjacent loading beams.

[0021] Each loading beam 5 includes an inner loading beam section and an outer loading beam section detachably connected to the inner loading beam section by bolts. Specifically, the inner loading beam section and the outer loading beam section are connected by a loading beam connecting section 11. The loading beam connecting section 11 includes a first flange plate arranged at the outer end of the inner loading beam section and a second flange plate arranged at the inner end of the outer loading beam section. The first flange plate and the second flange plate are connected by bolts. The inner end of the inner loading beam section 5-1 is welded and fixed to the outer periphery of the inner ring reinforcement beam 2, and the outer ring reinforcement beam 4 is welded and fixed to the outer loading beam section 5-2.

[0022] A loading beam fixing bracket 3 is fixed between one end of the inner loading beam section 5-1 away from the inner ring reinforcement beam. The loading beam fixing bracket includes an upper fixing bracket 3-1 and a lower fixing bracket 3-2 which are symmetrically arranged up and down. Both the upper fixing bracket 3-1 and the lower fixing bracket 3-2 are trapezoidal structural frames. The upper fixing bracket is welded and fixed to the upper side of each inner loading beam section, and the lower fixing bracket is welded and fixed to the lower side of each inner loading beam section.

[0023] A height-adjustable fixed bracket leg 12 is provided at the bottom of the lower fixed bracket of the loading beam fixed bracket 3, and a first roller 14 is provided at the bottom of the fixed bracket leg 12 for rolling contact with the reaction force base. There are at least three fixed bracket legs, which can form a stable support for the loading beam fixed bracket; a height-adjustable reinforcing beam leg 16 is provided at the bottom of the outer ring reinforcing beam 4, and a second roller 15 is provided at the bottom of the reinforcing beam leg for rolling contact with the reaction force base. There are at least three reinforcing beam legs 16, which can form a stable support for the outer ring reinforcing beam.

[0024] In this embodiment, the base plate, the inner ring reinforcement beam, the inner loading beam section, the loading beam fixed bracket and the fixed bracket support leg form an integral inner structural member, and the outer loading beam section, the outer ring reinforcement beam, the reinforcement beam support leg, the hydraulic loading cylinder and the force transmission plate form an integral outer structural member. There is one inner structural member and multiple outer structural members. The lengths of the outer loading beam sections of different outer structural members are different. According to the radius of the model of the component to be tested, the outer structural member of appropriate size is selected so that the length of the entire loading beam matches the radius of the model of the component to be tested.

[0025] When in use, the inner structural member is pushed horizontally to the reaction wall along the reaction pedestal by using the fixed bracket legs, the height of the inner loading beam section is adjusted by extending and retracting the fixed bracket legs, and then the base plate is fixed to the reaction wall. According to the radius of the model of the component to be tested, the outer structural member corresponding to the length of the outer loading beam section is selected, and the outer structural member is pushed horizontally to the inner structural member along the reaction pedestal by using the reinforced beam legs, the height of the outer loading beam section is adjusted by using the reinforced beam legs, and then each outer loading beam section is fixed to the corresponding inner loading beam section by bolts, and both ends of the component to be tested are also fixed to the reaction wall, the piston rods of each hydraulic loading cylinder are extended synchronously, and the force transmission plate contacts the inner wall of the component to be tested to transmit force, so that the component to be tested can be uniformly loaded in the annular direction from the inside to the outside, so as to simulate the actual stress condition of the circular structure in actual use, thereby providing a theoretical basis for the design of the circular structure.

[0026] In other embodiments of the present invention, in order to achieve adjustable length of the loading beam to meet the needs of test component models with different inner diameters, the loading beam can also adopt the following structure: each loading beam includes an inner loading beam section and an outer loading beam section telescopically coordinated with the inner loading beam section, a hydraulic loading cylinder is arranged on the outer loading beam section, an outer ring loading beam is arranged between the outer loading beam sections, the inner loading beam section is fixed to the inner ring loading beam, and a telescopic adjustment cylinder is arranged between the inner loading beam section and the outer loading beam section for adjusting the telescopic extension of the outer loading beam section relative to the inner loading beam section, the axis of the telescopic adjustment cylinder extends along the radial direction of the inner ring reinforcement beam, and the length of the loading beam is adjusted by the telescopic extension of the telescopic adjustment cylinder.

[0027] In the above description of this specification, unless otherwise clearly specified and limited, the terms "fixed", "installed", "connected" or "connected" should be understood in a broad sense. For example, with regard to the term "connection", it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. Therefore, unless otherwise clearly defined in this specification, those skilled in the art can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0028] According to the above description of this specification, those skilled in the art may also understand that the terms used below, such as "up", "down", "front", "back", "left", "right", "length", "width", "thickness", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", "center", "longitudinal", "lateral", "clockwise" or "counterclockwise", etc., which indicate the orientation or position relationship, are based on the orientation or position relationship shown in the drawings of this specification, and are only for the purpose of facilitating the explanation of the scheme of the present invention and simplifying the description, rather than explicitly or implicitly indicating that the device or element involved must have the specific orientation, be constructed and operate in a specific orientation. Therefore, the above-mentioned orientation or position relationship terms cannot be understood or interpreted as limitations on the scheme of the present invention.

[0029] In addition, the terms "first" or "second" used in this specification to refer to numbers or ordinals are only used for descriptive purposes and cannot be understood as explicitly or implicitly indicating relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this specification, the meaning of "plurality" is at least two, such as two, three or more, etc., unless otherwise clearly and specifically defined.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A circumferentially uniformly distributed load loading device for simulating the internal lateral pressure of a circular structure, characterized in that: It comprises a base plate for fixing on the reaction wall of the structure laboratory, a semicircular inner ring reinforcement beam coaxially arranged with the model of the component to be tested is fixed on the front side plate surface of the base plate, a plurality of loading beams radially distributed with the axis of the inner ring reinforcement beam as the center are fixed on the inner ring reinforcement beam, the loading beams are evenly spaced along the circumference of the inner ring reinforcement beam, the length of each loading beam extends along the radial direction of the inner ring reinforcement beam, an outer ring reinforcement beam is further arranged between the ends of each loading beam away from the inner ring reinforcement beam, a hydraulic loading cylinder is arranged at the end of each loading beam away from the inner ring reinforcement beam, and a force transmission plate adapted to the inner wall of the model of the component to be tested is arranged at the loading end of the hydraulic loading cylinder.

2. The circumferentially uniformly distributed load loading device according to claim 1, characterized in that: The component model to be tested is a semicircular structure, and both ends of the component model to be tested are fixed to the reaction wall through component fixing brackets.

3. The circumferentially uniformly distributed load loading device according to claim 1, characterized in that: The outer ring reinforcement beam comprises a plurality of outer ring reinforcement beam sections, and two ends of each outer ring reinforcement beam section are respectively welded and fixed between two adjacent loading beams.

4. The circumferentially uniformly distributed load loading device according to claim 1, characterized in that: One end of each loading beam away from the outer ring reinforcement beam is welded and fixed to the outer periphery of the inner ring reinforcement beam.

5. The circumferentially uniformly distributed load loading device according to any one of claims 1 to 4, characterized in that: Each loading beam includes an inner loading beam section and an outer loading beam section telescopically coordinated with the inner loading beam section, a hydraulic loading cylinder is arranged on the outer loading beam section, an outer ring loading beam is arranged between the outer loading beam sections, the inner loading beam section is fixed on the inner ring loading beam, and a telescopic adjustment cylinder is arranged between the inner loading beam section and the outer loading beam section for adjusting the telescopic movement of the outer loading beam section relative to the inner loading beam section.

6. The circumferentially uniformly distributed load loading device according to any one of claims 1 to 4, characterized in that: Each loading beam includes an inner loading beam section and an outer loading beam section detachably connected to the inner loading beam section by bolts, a loading beam fixing bracket is fixed between the end of the inner loading beam section away from the inner ring reinforcement beam, a height-adjustable fixing bracket leg is arranged at the bottom of the loading beam fixing bracket, a first roller that contacts and rolls with the reaction force pedestal is arranged at the bottom of the fixed bracket leg; a height-adjustable reinforcement beam leg is arranged at the bottom of the outer ring reinforcement beam, a second roller that contacts and rolls with the reaction force pedestal is arranged at the bottom of the reinforcement beam leg.

7. The circumferentially uniformly distributed load loading device according to claim 6, characterized in that: The circumferentially uniformly distributed load loading device comprises one type of inner loading beam section and at least two types of outer loading beam sections. The outer loading beam sections of different types are respectively fixed on the corresponding outer ring reinforcement beams, and the lengths of the outer loading beam sections of different types are different.

8. The reversing uniform load loading device according to claim 6, characterized in that: The loading beam fixing bracket includes an upper fixing bracket located on the upper side of the inner loading beam section and a lower fixing bracket located on the lower side of the inner loading beam section. Both the upper fixing bracket and the lower fixing bracket are trapezoidal structural frames. The upper fixing bracket is welded and fixed to the upper side of each inner loading beam section, and the lower fixing bracket is welded and fixed to the lower side of each inner loading beam section.

Images