CN107702681B - Test device and method for simulating foundation settlement of large storage tank - Google Patents
Test device and method for simulating foundation settlement of large storage tank Download PDFInfo
- Publication number
- CN107702681B CN107702681B CN201710778201.8A CN201710778201A CN107702681B CN 107702681 B CN107702681 B CN 107702681B CN 201710778201 A CN201710778201 A CN 201710778201A CN 107702681 B CN107702681 B CN 107702681B
- Authority
- CN
- China
- Prior art keywords
- lifting device
- lifting
- test platform
- storage tank
- test
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
the application provides a test device and a method for simulating foundation settlement of a large-scale storage tank, wherein the device comprises: the device comprises a first lifting device, a plurality of second lifting devices, a plurality of third lifting devices, a plurality of fourth demonstration devices, a test platform and a control device. The test platform is fixedly connected with the first lifting device, the second lifting device, the third lifting device and the fourth lifting device. The control device controls the first lifting device, the second lifting device, the third lifting device and/or the fourth lifting device to generate axial displacement so as to deform the test platform. The test device and the method can be used for simulating the influence of various different foundation settlement types on the bottom plate of the large storage tank and providing technical support for designing and building the large storage tank.
Description
Technical Field
The application belongs to the technical field of energy, and particularly relates to a test device for simulating foundation settlement of a large storage tank and a method for generating foundation settlement by using the test device.
Background
The large storage tank is widely applied to the industrial fields of petroleum, chemical industry, electric power and the like. With the acceleration of domestic economic construction and the enhancement of national petroleum reserve strategy, the number and capacity of large storage tanks are rapidly increasing. The maximum capacity of a large storage tank constructed and used in China is 15 ten thousand cubic meters, and the large storage tank with 10 ten thousand cubic meters is frequently used. Meanwhile, because of the industrial layout in China and the convenience of transportation, loading and unloading, large storage tanks built in China are mostly in coastal soft soil areas, such as crude oil storage bases of Tianjin, Qingdao, Zhoushan and the like. And the large storage tank built on the soft soil foundation can generate settlement deformation with different degrees, including integral uniform settlement, disc-shaped settlement, integral inclined settlement, local non-uniform settlement, settlement around the tank and the like of the storage tank. A large number of storage tank accident analyses at home and abroad show that the storage tank damage caused by the uneven settlement of the foundation is the main cause of the accident.
The present Chinese invention patent CN201010598695.X discloses a device and a method for generating uneven settlement in a thin-wall cylindrical shell structure test, wherein the device comprises: the sedimentation transfer device is uniformly fixed between the circular bottom plate and the rigid platform along the circumference. The settlement transfer device comprises a cuboid steel bar block, an upper screw, a sleeve with adjustable positive and negative threads, a lower screw, a magnetic gauge stand and a dial indicator. The rectangular steel bar block is spot-welded on the lower surface of the circular bottom plate, one end of the upper screw rod and one end of the lower screw rod are screwed into the positive and negative thread adjustable sleeves respectively, the other end of the upper screw rod is fixed on the rectangular steel bar block through a nut, and the other end of the lower screw rod is fixed on the rigid platform through a bolt. Because the settlement transfer device is fixed on the lower surface of the circular bottom plate along the circumferential direction through the cuboid steel bar blocks, the settlement transfer device can only be arranged on the outer circumference of the lower surface of the circular bottom plate, so that the device can only simulate uneven settlement around a tank, and the type of simulated foundation settlement is single.
Disclosure of Invention
In order to overcome the above defects in the prior art, the technical problem to be solved by the present invention is to provide a test apparatus and a method for simulating foundation settlement of a large storage tank, which can simulate the influence of various foundation settlement types on the structure of the large storage tank.
The specific technical scheme of the invention is as follows:
a test device for simulating foundation settlement of a large storage tank comprises:
a first lifting device;
A plurality of second lifting devices surrounding the first lifting device;
A plurality of third lifting devices disposed between the first lifting devices and the second lifting devices, the third lifting devices surrounding the first lifting devices and forming a concentric structure with the second lifting devices;
A plurality of fourth lifting devices disposed between the first lifting device and the third lifting device, the fourth lifting devices surrounding the first lifting device and forming a concentric structure with the second lifting device;
the first lifting device is fixed on a first frame body, the second lifting device is fixed on a second frame body, the third lifting device is fixed on a third frame body, the fourth lifting device is fixed on a fourth frame body, and the second frame body, the third frame body and the fourth frame body are formed by connecting a plurality of frame body units end to end;
the frame body unit comprises a first connecting plate with radian and a second connecting plate with radian equal to that of the first connecting plate, and the first connecting plate and the second connecting plate are arranged oppositely and fixedly connected through a fastener;
The first connecting plate and the second connecting plate are at least provided with two same lifting devices, and orthographic projections of the first connecting plate and the second connecting plate on a horizontal plane are staggered with the position of at least one lifting device;
The test platform is fixedly connected with the first lifting device, the second lifting device, the third lifting device and the fourth lifting device;
The control device controls the first lifting device, the second lifting device, the third lifting device and the fourth lifting device to generate axial displacement so as to deform the test platform; and collecting the displacement and analyzing and processing the displacement.
in one embodiment, the first lifting device, the second lifting device, the third lifting device, and the fourth lifting device each have a sleeve and a rod body that slides within the sleeve in an axial direction of the sleeve.
in one embodiment, the first lifting device, the second lifting device, the third lifting device, and the fourth lifting device are selected from any one of an electric push rod, a hydraulic rod, or a piston rod.
In one embodiment, the second lifting means are arranged equidistantly on the second rack; the third lifting devices are arranged on the third frame body at equal intervals; the fourth lifting devices are arranged on the fourth frame body at equal intervals.
In one embodiment, the first frame body has a bottom plate, and a clamping plate which is opposite to the bottom plate and has the same size as the bottom plate, and the clamping plate and the bottom plate are fixedly connected through a fastener.
in one embodiment, the second lifting device, the third lifting device, and the fourth lifting device are fixed to the second connecting plate through the sleeve, and the first lifting device is fixed to the bottom plate through the sleeve.
In one embodiment, the first connecting plate and the clamping plate are provided with through holes, and the rod bodies of the first lifting device, the second lifting device, the third lifting device and the fourth lifting device can penetrate through the through holes.
In one embodiment, a first base is fixed at the upper end of the rod body, the rod body is fixedly connected with the test platform through the first base, a second base is fixed at the lower end of the sleeve, and the sleeve is fixedly connected with the second connecting plate and/or the bottom plate through the second base.
In one embodiment, the test platform is formed by splicing a plurality of fan-shaped plates, and two adjacent fan-shaped plates are fixedly connected through a connecting piece.
In one embodiment, the first frame body further comprises a receiving plate, the receiving plate is fixedly connected to the first base of the first lifting device, so that at least a part of the plurality of sector plates is fixedly connected to the receiving plate.
In one embodiment, the control device includes a controller and an upper computer, and the upper computer sends instructions to cause the controller to control the first lifting device, the second lifting device, the third lifting device, and/or the fourth lifting device to generate axial displacement.
In one embodiment, the test device for simulating foundation settlement of the large-scale storage tank further comprises a displacement sensor, and the displacement sensor can detect the displacement of the test platform.
In one embodiment, the test device for simulating foundation settlement of the large storage tank further comprises a dial indicator, and the dial indicator can detect the displacement of the first lifting device, the second lifting device, the third lifting device and the fourth lifting device.
In addition, the invention also provides a test method for simulating the foundation settlement of the large-scale storage tank, which comprises the following steps:
controlling a first lifting device, a second lifting device, a third lifting device and/or a fourth lifting device to generate displacement with a preset rule so as to deform the test platform and obtain the deformation displacement of the test platform;
Determining the current stress of the test platform according to the displacement;
Comparing the current stress of the test platform with the safe stress of the test platform to obtain a comparison result;
And the controller determines the safety degree of the test platform according to the comparison result.
In one embodiment, the safe stress of the test platform is a ratio of the maximum stress of the test platform to the safe factor of the test platform.
in one embodiment, the controller determines the safety level of the test platform according to the comparison result, including: under the condition of the strain corresponding to the maximum stress or less,
the current stress of the test platform is less than or equal to the safe stress of the test platform, and the test platform is safe;
The current stress of the test platform is larger than the safe stress of the test platform, and the test platform is unsafe.
In one embodiment, the predetermined regular displacements are the same axial displacements of the lifting devices on the same frame, and the axial displacements of the lifting devices on different frames from outside to inside are different and in the same proportion.
In one embodiment, the predetermined regular displacements are axial displacements of the lifting device in the plane direction from one side of the plane to the opposite side of the plane that are different and in the same proportion.
In one embodiment, the predetermined regular displacement is an axial displacement of the lifting device in a part of the area covered by the test platform, and no axial displacement of the lifting device in other areas.
In one embodiment, the predetermined regular displacement produces the same axial displacement for the first lifting means, and no axial displacement for the other lifting means.
in one embodiment, the predetermined regular displacement is such that the first lifting means, the second lifting means, the third lifting means and the fourth lifting means all produce the same axial displacement.
Borrow by above technical scheme, the beneficial effect of this application lies in: compared with the prior art, the test device and the method for simulating foundation settlement of the large-scale storage tank can simulate the influence of different types of settlement such as overall uniform settlement, disc-shaped settlement, overall inclined settlement, local non-uniform settlement, tank periphery settlement and the like of the large-scale storage tank on the bottom plate of the large-scale storage tank by controlling the axial displacement of the first lifting device, the second lifting device, the third lifting device and/or the fourth lifting device, and provide technical support for designing and building the large-scale storage tank.
specific embodiments of the present application are disclosed in detail with reference to the following description and drawings, indicating the manner in which the principles of the application may be employed. It should be understood that the embodiments of the present application are not so limited in scope. The embodiments of the application include many variations, modifications and equivalents within the spirit and scope of the appended claims.
Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments, in combination with or instead of the features of the other embodiments.
It should be emphasized that the term "comprises/comprising" when used herein, is taken to specify the presence of stated features, integers, steps or components but does not preclude the presence or addition of one or more other features, integers, steps or components.
Drawings
The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes, the proportional sizes, and the like of the respective members in the drawings are merely schematic for assisting the understanding of the present application, and are not particularly limited to the shapes, the proportional sizes, and the like of the respective members in the present application. Those skilled in the art, having the benefit of the teachings of this application, may select various possible shapes and proportional sizes to implement the present application, depending on the particular situation. In the drawings:
FIG. 1 is a schematic structural diagram of a test device for simulating foundation settlement of a large storage tank according to an embodiment of the present application;
FIG. 2 is a schematic structural diagram of a lifting device according to an embodiment of the present disclosure;
Fig. 3 is a schematic structural view of a magazine unit according to an embodiment of the present application;
fig. 4 is a schematic structural view of a third frame according to an embodiment of the present disclosure;
FIG. 5 is a partial schematic view of a test apparatus for simulating foundation settlement of a large storage tank according to an embodiment of the present disclosure;
Fig. 6 is a flowchart of a test method for simulating foundation settlement of a large storage tank according to an embodiment of the present disclosure.
Reference numerals of the above figures: 1. a second lifting device; 11. a second frame body; 2. a third lifting device; 22. a third frame body; 201. a first base; 202. a rod body; 203. a sleeve; 204. a second base; 3. a first lifting device; 33. a first frame body; 4. a fourth lifting device; 44. a fourth frame body; 300. a frame unit; 301. a connecting member; 302. a first connecting plate; 303. a fastener; 304. a second connecting plate; 601. a bearing plate; 602. a splint; 603. a base plate; 7. a test platform; 701. a sector plate; 8. a control device; 801. a dial indicator; 802. displacement sensor
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1 and 5, the present application provides a test apparatus for simulating foundation settlement of a large storage tank, the apparatus comprising: a first lifting device 3, a plurality of second lifting devices 1, a test platform 7 and a control device 8. The plurality of second lifting devices 1 surrounds the first lifting device 3. The test platform 7 is fixedly connected with the first lifting device 3 and the second lifting device 1. The control device 8 controls the first lifting device 3 and/or the second lifting device 1 to generate axial displacement so as to deform the test platform 7.
When the test device for simulating foundation settlement of the large-scale storage tank is used, the control device 8 can be used for controlling the first lifting device 3 and/or the second lifting device 1 to generate axial displacement of different degrees so as to deform the test platform 7. The influence of various different foundation settlement types (such as overall uniform settlement, disc settlement, overall inclined settlement, local non-uniform settlement, settlement around the tank and other different types of settlement) on the bottom plate of the large storage tank is simulated, and technical support is provided for designing and building the large storage tank.
in this embodiment, the test device for simulating the foundation settlement of the large storage tank may be disposed on a substrate, and the substrate may be made of a flat plate having a certain thickness and rigidity. The material of the flat plate can be selected from metal plates, such as steel plates and iron plates, according to actual needs, which is not limited in this application.
in a general case, the first lifting device 3 may be one, which is arranged at the center of a test device simulating the settlement of the foundation of a large storage tank.
The plurality of second lifting devices 1 may surround the first lifting device 3, and the specific shape of the second lifting devices 1 may be circular, quadrilateral, or polygonal. However, since the bottom of a large storage tank is usually circular, the plurality of second lifting devices 1 may be arranged circumferentially.
the test platform 7 may be made of a metal material or a composite material with high rigidity, which may be the same material as the material actually used for the large storage tank. The test platform 7 is typically intended to simulate the tank floor of a large storage tank, and the test platform 7 may also be circular. The test platform 7 is fixedly connected to all the first lifting devices 3 and all the second lifting devices 1.
The control device 8 can control any first lifting device 3 and/or any second lifting device 1 to generate axial displacement so as to enable the test platform 7 to generate deformation, and further simulate the influence of foundation settlement on the bottom plate of the large-sized storage tank.
in one embodiment, in order to make the test device for simulating foundation settlement of the large-sized storage tank structurally stable and accurately test, a plurality of third lifting devices 2 may be disposed between the first lifting device 3 and the second lifting device 1. The third lifting device 2 surrounds the first lifting device 3 and forms a concentric structure with the second lifting device 1. Further, a plurality of fourth lifting devices 4 may be disposed between the first lifting device 3 and the third lifting device 2, and the fourth lifting devices 4 surround the first lifting device 3 and form a concentric structure with the second lifting device 1. If desired, a fifth lifting device may be provided between the first lifting device 3 and the fourth lifting device 4, and so on, which is not limited in any way by the present application. The concentric structure formed by the second lifting device 1, the third lifting device 2 and the fourth lifting device 4 is preferably a concentric circle structure.
the first frame 33 may be provided with a first lifting device 3, and the first lifting device 3 is located at the center of the concentric structure, preferably at the center of the concentric circle.
A plurality of second lifting devices 1 may be provided on the second frame body 11. The shape of the second frame 11 may be generally determined according to the shape of the arrangement of the second lifting apparatus 1 disposed thereon. For example, if the plurality of second lifting devices 1 arranged thereon has a square shape, the second frame body 11 may have a square shape. In this embodiment, since the bottom plate of the large storage tank is generally circular, the second lifting device 1 on the second frame body 11 is correspondingly arranged to be circular, and further, preferably, the second frame body 11 for fixing the second lifting device 1 is also correspondingly circular. The second frame 11 may be disposed on the substrate and may be fixedly connected to the substrate by anchor bolts.
the circumference of the third frame 22 may be smaller than that of the second frame 11, and the third lifting device 2 on the third frame 22 and the second lifting device 1 on the second frame 11 are concentric, preferably concentric. Similarly, the shape of the third frame 22 may be circular as well as the shape of the second frame 11.
The circumference of the fourth frame body 44 is generally smaller than that of the third frame body 22, and the fourth lifting device 4 on the fourth frame body 44 is concentric with the second lifting device 1 and the third lifting device 2. Therefore, the shape of the fourth frame 44 may be circular as well as the shape of the second and third frames 11 and 22.
In order to simulate the effect of foundation settlement and balance the stress of the test platform 7 as much as possible, the second lifting devices 1 are arranged on the second frame body 11 at equal intervals; the third lifting devices 2 are arranged on the third frame body 22 at equal intervals; the fourth lifting devices 4 are arranged equidistantly on the fourth frame 44. Preferably, the distance between two adjacent concentric circles formed by the lifting devices on the adjacent frame bodies is equal to the radius of the smallest concentric circle.
Because the test device for simulating foundation settlement of the large-scale storage tank occupies a large area, the second frame body 11, the third frame body 22 and the fourth frame body 44 are not easy to be integrally formed, and can be formed by splicing a plurality of frame body units 300 end to end. Specifically, as shown in fig. 3, the magazine unit 300 is generally composed of a first connection plate 302 and a second connection plate 304, and the first connection plate 302 and the second connection plate 304 may be oppositely disposed and fixed by a fastener 303. Preferably, the fastener 303 is threaded at both ends, with one end being threadedly connected to the first connector plate 302 and the other end being threadedly connected to the second connector plate 304. The first connecting plate 302 and the second connecting plate 304 may have the same curvature, so that the assembled rack unit 300 also has a corresponding curvature, and a plurality of rack units 300 with the same curvature may be connected end to form a circular rack. It should be noted that two adjacent first connection plates 302 and/or two adjacent second connection plates 304 may be connected and fixed by a connection member 301. For example, a plate may be used to bolt two adjacent first connecting plates 302 and/or two adjacent second connecting plates 304 to the plate.
similarly, the first lifting device 3 at the center of the concentric circle needs to be fixed by the first frame 33. As shown in fig. 4, the first frame 33 has a bottom plate 603 and a clamping plate 602, and the clamping plate 602 is disposed opposite to the bottom plate 603 and fixedly connected by a fastener 303. The shape of the bottom plate 603 and the clamping plate 602 may be any shape as long as the first lifting device 3 can be fixed, and those skilled in the art do not limit the shape.
The lifting device is typically secured to the second web 304 and the base 603. Referring to fig. 2, the lifting device may be any one of an electric push rod, a hydraulic rod, or a piston rod. Taking an electric push rod as an example, the electric push rod comprises a motor, a sleeve 203, and a rod body 202 which can slide in the sleeve 203 along the axial direction under the driving of the motor. Typically, the sleeve 203 may be fixed to the centerline of the second connecting plate 304 and/or the bottom plate 603. The center lines of the first connecting plate 302 and the clamping plate 602 are both provided with through holes for centering, and the rod 202 of the lifting device can penetrate through the through holes, so that the first connecting plate 302 and/or the clamping plate 602 is abutted against the sleeve 203. For example, the first connector plate 302 and/or the clamping plate 602 may abut against a shoulder formed by the sleeve 203 and the rod 202.
Further, in order to ensure the reliability of the connection of the lifting device with the testing platform 7, the second connecting plate 304 and/or the bottom plate 603, the first base 201 may be generally fixed to the upper end of the rod 202, and the rod 202 may be fixedly connected with the testing platform 7 through the first base 201. A second base 204 may be fixed to a lower end of the sleeve 203, and the sleeve 203 may be fixedly connected to the second connection plate 304 and/or the bottom plate 603 through the second base 204.
In addition, in order to stabilize the overall structure of the second frame 3, the third frame 22 and the fourth frame 44 formed by the frame unit 300, at least two identical lifting devices are arranged on the first connecting plate 302 and the second connecting plate 304, and the orthographic projections of the first connecting plate 302 and the second connecting plate 304 on the horizontal plane are staggered by at least one lifting device.
In a preferred embodiment, the testing platform 7 may be formed by splicing a plurality of sector plates 701, and two adjacent sector plates 701 may be fixedly connected by the connecting member 303. It will be appreciated that the connector 303 may be formed by splicing several small connectors secured between adjacent concentric frames. Therefore, in the test process, if a certain sector plate or a plurality of sector plates 701 need to be replaced, only the corresponding sector plate 701 which needs to be replaced needs to be detached, the whole test platform 7 does not need to be detached, and the replacement is convenient. Correspondingly, the connecting member 303 may be fixedly connected to the lower portion of the two radial sides of the sector plate 701 and be on the same horizontal plane with the first base 201 of the lifting device, so as to ensure the flatness of the testing platform 7.
Referring to fig. 5, the testing platforms 7 at the center corners of the sector plates 701 are all fixed on the rod 202 (or the first base 201) of the first lifting device 3. Thus, the rod 202 (or the first base 201) of the first lifting apparatus 3 has a small area and cannot bear the pressure at the center of the circle of all the sector plates 701, and on the other hand, the rod 202 (or the first base 201) of the first lifting apparatus 3 is easily damaged by stress concentration. Therefore, the receiving plate 601 can be fixed to the first base 201 of the first lifting device 3, so that at least a part of the plurality of sector plates 701 (for example, the testing platform 7 at the central angle position of the sector plates 701) is fixed to the receiving plate 601.
In addition, the control device 8 of the test device can comprise a controller and an upper computer, and the controller can be a PLC (programmable logic controller). The upper computer can send a displacement instruction, so that the PLC controller controls the first lifting device 3, the second lifting device 1, the third lifting device 2, and/or the fourth lifting device 4 to generate axial displacement. Specifically, the command sent by the upper computer may be transmitted to a PLC controller, and the PLC controller may transmit signals to the first lifting device 3, the second lifting device 1, the third lifting device 2, and the fourth lifting device 4 through the converters, so as to control the lifting devices to generate axial displacement.
Meanwhile, the test device can also be provided with a displacement sensor 802 and a dial indicator 801, the displacement sensor 802 can monitor the displacement of the test platform 7 and each lifting device at any time, and the displacement can be transmitted to an upper computer for analysis and processing in real time. The dial indicator 801 can be conveniently observed by field workers at any time, and then the displacement of each lifting device is finely adjusted. In order to ensure the accuracy of detecting the axial displacement variation of each lifting device, the displacement sensor 802 and the dial indicator 801 may be placed on the first connecting plate 302.
it should be noted that any suitable conventional structure may be adopted for the PLC controller, the converter, the displacement sensor 802, the dial indicator 801, and the like provided in the present embodiment. For clearly and briefly explaining the technical solution provided by the present embodiment, the above parts will not be described again, and the drawings in the specification are also simplified accordingly. It should be understood, however, that the present embodiments are not limited in scope thereby.
in addition, referring to fig. 6, the invention further provides a test method for simulating foundation settlement of a large storage tank, which comprises the following steps:
s101: and controlling the first lifting device 3, the second lifting device 1, the third lifting device 2 and/or the fourth lifting device 4 to generate displacement with a preset rule so as to deform the test platform 7 and obtain the displacement of the deformation of the test platform 7.
s102: and determining the current stress of the test platform 7 according to the displacement.
s103: and comparing the current stress of the test platform 7 with the safe stress of the test platform 7 to obtain a comparison result.
S104: and the controller determines the safety degree of the test platform 7 according to the comparison result.
For example, when simulating the disc-shaped settlement of a large-sized storage tank, the axial displacements of the lifting devices on the same frame body can be made the same, and the axial displacements of the lifting devices on different frame bodies from outside to inside are different and in the same proportion. In particular, the dish-shaped settlement refers to the deformation of a bulge or a recess in the center of the bottom plate of the storage tank. Therefore, when simulating the disc-shaped settlement, the axial displacements of the first lifting device 3, the second lifting device 1, the third lifting device 2 and the fourth lifting device 4 can be simultaneously raised or lowered according to a certain proportion, and the displacement is gradually increased or decreased from the outside to the inside.
then, the displacement sensor 802 can be used for detecting the displacement of the test platform 7 when the test platform is deformed, and the current stress of the test platform 7 when the test platform is deformed can be calculated according to the displacement of the test platform 7. It should be emphasized that it is prior art to calculate the current stress of the testing platform 7 through the displacement of the testing platform 7, and the detailed description of the present application is omitted here. And comparing the current stress with the safe stress of the test platform 7 under the condition that the current stress is less than or equal to the strain corresponding to the maximum stress, wherein if the current stress of the test platform 7 is less than or equal to the safe stress of the test platform 7, the test platform 7 is safe. And if the current stress of the test platform 7 is greater than the safe stress of the test platform 7, the test platform 7 is unsafe. It is noted that the safety stress of the test platform 7 is the ratio of the maximum stress of the test platform 7 to the safety factor of the test platform 7.
Similarly, when simulating whole body inclined settlement, the axial displacement of all lifting devices from one side of the plane to the opposite side of the plane along one plane direction is different and is changed in the same proportion. That is, the axial displacement of the lifting device from one side of the plane to the opposite side thereof along the direction of the plane is in a linear relationship, so that the test platform 7 is displaced in an inclined state as a whole. When local uneven settlement is simulated, the lifting devices in the partial areas covered by the test platform 7 generate axial displacement, and the lifting devices in other areas do not generate axial displacement, namely, the local positions of the test platform 7 generate settlement. When the tank periphery settlement is simulated, the first lifting device 1 generates the same axial displacement, and the lifting devices of other frame bodies do not generate axial displacement. When simulating the overall uniform settlement, the first lifting device 1, the second lifting device 2, the third lifting device 3 and the fourth lifting device 4 are all caused to generate the same axial displacement, even if the test platform 7 is wholly lifted or lowered.
Because the simulation of the different sedimentation types is similar to the simulation of the butterfly sedimentation, the specific test operation process can refer to the test process of the butterfly sedimentation, and the details are not repeated herein.
All articles and references, including patent applications and publications, disclosed in this application are incorporated herein by reference for all purposes. The term "consisting essentially of …" describing a combination shall include the identified element, ingredient, component or step as well as other elements, ingredients, components or steps that do not materially affect the basic novel characteristics of the combination. The use of the terms "comprising" or "including" to describe combinations of elements, components, or steps herein also contemplates embodiments that consist essentially of such elements, components, or steps. By using the term "may" herein, it is intended to indicate that any of the described attributes that "may" include are optional.
a plurality of elements, components, parts or steps can be provided by a single integrated element, component, part or step. Alternatively, a single integrated element, component, part or step may be divided into separate plural elements, components, parts or steps. The disclosure of "a" or "an" to describe an element, ingredient, component or step is not intended to foreclose other elements, ingredients, components or steps.
It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and many applications other than the examples provided will be apparent to those of skill in the art upon reading the above description. The scope of the present teachings should, therefore, be determined not with reference to the above description, but should instead be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are hereby incorporated by reference for all purposes. The omission in the foregoing claims of any aspect of subject matter that is disclosed herein is not intended to forego the subject matter and should not be construed as an admission that the applicant does not consider such subject matter to be part of the disclosed subject matter.
Claims (15)
1. The utility model provides a test device that simulation large-scale storage tank ground subsides which characterized in that includes:
A first lifting device;
a plurality of second lifting devices surrounding the first lifting device;
a plurality of third lifting devices disposed between the first lifting devices and the second lifting devices, the third lifting devices surrounding the first lifting devices and forming a concentric structure with the second lifting devices;
A plurality of fourth lifting devices disposed between the first lifting device and the third lifting device, the fourth lifting devices surrounding the first lifting device and forming a concentric structure with the second lifting device;
The first lifting device is fixed on a first frame body, the second lifting device is fixed on a second frame body, the third lifting device is fixed on a third frame body, the fourth lifting device is fixed on a fourth frame body, and the second frame body, the third frame body and the fourth frame body are formed by connecting a plurality of frame body units end to end;
The frame body unit comprises a first connecting plate with radian and a second connecting plate with radian equal to that of the first connecting plate, and the first connecting plate and the second connecting plate are arranged oppositely and fixedly connected through a fastener;
The first connecting plate and the second connecting plate are at least provided with two same lifting devices, and orthographic projections of the first connecting plate and the second connecting plate on a horizontal plane are staggered with the position of at least one lifting device;
The test platform is fixedly connected with the first lifting device, the second lifting device, the third lifting device and the fourth lifting device;
The control device controls the first lifting device, the second lifting device, the third lifting device and the fourth lifting device to generate axial displacement so as to deform the test platform; collecting the displacement and analyzing the displacement;
The first lifting device, the second lifting device, the third lifting device and the fourth lifting device are all provided with a sleeve and a rod body sliding in the sleeve along the axial direction of the sleeve;
The second lifting devices are arranged on the second frame body at equal intervals; the third lifting devices are arranged on the third frame body at equal intervals; the fourth lifting devices are arranged on the fourth frame body at equal intervals;
The first frame body is provided with a bottom plate and a clamping plate which is opposite to the bottom plate and has the same size with the bottom plate, and the clamping plate and the bottom plate are fixedly connected through a fastener;
The second lifting device, the third lifting device and the fourth lifting device are fixed on the second connecting plate through the sleeves, and the first lifting device is fixed on the bottom plate through the sleeves;
A first base is fixed at the upper end part of the rod body, the rod body is fixedly connected with the test platform through the first base, a second base is fixed at the lower end part of the sleeve, and the sleeve is fixedly connected with the second connecting plate and/or the bottom plate through the second base;
The test platform is formed by splicing a plurality of fan-shaped plates, and two adjacent fan-shaped plates are fixedly connected through a connecting piece.
2. The test device for simulating foundation settlement of a large storage tank according to claim 1, wherein the first lifting device, the second lifting device, the third lifting device, and the fourth lifting device are selected from any one of an electric push rod, a hydraulic rod, or a piston rod.
3. The test device for simulating foundation settlement of the large-scale storage tank according to claim 1, wherein the first connecting plate and the clamping plate are provided with through holes, and rod bodies of the first lifting device, the second lifting device, the third lifting device and the fourth lifting device can penetrate through the through holes.
4. the test device for simulating foundation settlement of a large-scale storage tank of claim 1, wherein the first frame further comprises a receiving plate, the receiving plate is fixedly connected to the first base of the first lifting device, so that at least a portion of the plurality of sector plates is fixedly connected to the receiving plate.
5. The test device for simulating foundation settlement of a large-scale storage tank according to claim 1, wherein the control device comprises a controller and an upper computer, and the upper computer sends instructions to enable the controller to control the first lifting device, the second lifting device, the third lifting device and/or the fourth lifting device to generate axial displacement.
6. The test device for simulating foundation settlement of the large-scale storage tank according to claim 1, further comprising a displacement sensor capable of detecting the displacement of the test platform.
7. The test device for simulating foundation settlement of the large-scale storage tank according to claim 1, further comprising a dial indicator, wherein the dial indicator can detect the displacement of the first lifting device, the second lifting device, the third lifting device and the fourth lifting device.
8. a test method for simulating foundation settlement of a large-scale storage tank according to any one of the test device for simulating foundation settlement of a large-scale storage tank of any one of the preceding claims 1 to 7, which comprises:
Controlling a first lifting device, a second lifting device, a third lifting device and/or a fourth lifting device to generate displacement with a preset rule so as to deform the test platform and obtain the deformation displacement of the test platform;
Determining the current stress of the test platform according to the displacement;
Comparing the current stress of the test platform with the safe stress of the test platform to obtain a comparison result;
and the controller determines the safety degree of the test platform according to the comparison result.
9. the test method for simulating foundation settlement of a large-sized storage tank according to claim 8, wherein the safe stress of the test platform is a ratio of the maximum stress of the test platform to the safety factor of the test platform.
10. The test method for simulating foundation settlement of large storage tank according to claim 8, wherein the controller determines the safety degree of the test platform according to the comparison result, comprising: under the condition of the strain corresponding to the maximum stress or less,
the current stress of the test platform is less than or equal to the safe stress of the test platform, and the test platform is safe;
the current stress of the test platform is larger than the safe stress of the test platform, and the test platform is unsafe.
11. The test method for simulating foundation settlement of large storage tank according to claim 8, wherein the predetermined regular displacements are the same axial displacement of the lifting devices on the same frame, and the axial displacements of the lifting devices on different frames from outside to inside are different and in the same proportion.
12. The test method for simulating foundation settlement of a large-scale storage tank according to claim 8, wherein the predetermined regular displacements are axial displacements of the lifting devices from one side to the opposite side of the plane in the plane direction which are different and in the same proportion.
13. The test method for simulating foundation settlement of a large storage tank according to claim 8, wherein the predetermined regular displacement is axial displacement of the lifting devices in the partial area under the test platform, and no axial displacement of the lifting devices in other areas.
14. The test method for simulating foundation settlement of a large-scale storage tank according to claim 8, wherein the predetermined regular displacement is that the first lifting device generates the same axial displacement, and other lifting devices do not generate axial displacement.
15. The test method for simulating foundation settlement of a large storage tank of claim 8, wherein the predetermined regular displacement is that the first lifting device, the second lifting device, the third lifting device and the fourth lifting device all generate the same axial displacement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710778201.8A CN107702681B (en) | 2017-09-01 | 2017-09-01 | Test device and method for simulating foundation settlement of large storage tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710778201.8A CN107702681B (en) | 2017-09-01 | 2017-09-01 | Test device and method for simulating foundation settlement of large storage tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107702681A CN107702681A (en) | 2018-02-16 |
| CN107702681B true CN107702681B (en) | 2019-12-10 |
Family
ID=61171570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710778201.8A Active CN107702681B (en) | 2017-09-01 | 2017-09-01 | Test device and method for simulating foundation settlement of large storage tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107702681B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108592871B (en) * | 2018-04-28 | 2021-01-01 | 中国石油天然气集团有限公司 | Storage tank foundation settlement monitoring device and system |
| CN109030200B (en) * | 2018-05-31 | 2021-01-01 | 中国石油天然气集团有限公司 | Method and device for determining thickness and width of edge plate |
| CN109099884B (en) * | 2018-06-20 | 2021-03-30 | 中国石油天然气集团有限公司 | Storage tank bottom plate settlement simulation and automatic monitoring experiment platform |
| CN111811844A (en) * | 2019-04-11 | 2020-10-23 | 中国石油天然气集团有限公司 | Storage tank settlement testing device and method for testing tank wall change |
| CN111239367A (en) * | 2020-01-21 | 2020-06-05 | 中铁十五局集团有限公司 | Automatic simulation experiment device and method for ground settlement |
| CN114370850B (en) * | 2020-10-16 | 2024-07-26 | 中国石油天然气集团有限公司 | Experimental bench device for simulating storage tank sedimentation |
| CN115854976B (en) * | 2021-12-21 | 2024-01-23 | 中集安瑞科工程科技有限公司 | Sedimentation observation device and method for low-temperature storage tank |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121815A (en) * | 2010-12-21 | 2011-07-13 | 浙江大学 | Differential settlement producing device and method for thin-walled cylindrical shell structure test |
| CN104237460A (en) * | 2014-07-09 | 2014-12-24 | 中国石油大学 | Device for simulating sedimentation rule of proppant in complicated fracture network formed by volume fracturing and application of device |
| CN104792491A (en) * | 2015-03-11 | 2015-07-22 | 李骏 | Simulated multi-angle joint network propping agent sinking law device |
| CN106437668A (en) * | 2016-08-31 | 2017-02-22 | 内蒙古仁创沙漠资源利用研究院有限公司 | Gap flow diversion and sedimentation simulating device and system and method for simulating hydrofracture |
| CN106500660A (en) * | 2016-10-31 | 2017-03-15 | 东北石油大学 | A kind of controllable spherical tank foundation uneven settlement experimental provision |
-
2017
- 2017-09-01 CN CN201710778201.8A patent/CN107702681B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121815A (en) * | 2010-12-21 | 2011-07-13 | 浙江大学 | Differential settlement producing device and method for thin-walled cylindrical shell structure test |
| CN104237460A (en) * | 2014-07-09 | 2014-12-24 | 中国石油大学 | Device for simulating sedimentation rule of proppant in complicated fracture network formed by volume fracturing and application of device |
| CN104792491A (en) * | 2015-03-11 | 2015-07-22 | 李骏 | Simulated multi-angle joint network propping agent sinking law device |
| CN106437668A (en) * | 2016-08-31 | 2017-02-22 | 内蒙古仁创沙漠资源利用研究院有限公司 | Gap flow diversion and sedimentation simulating device and system and method for simulating hydrofracture |
| CN106500660A (en) * | 2016-10-31 | 2017-03-15 | 东北石油大学 | A kind of controllable spherical tank foundation uneven settlement experimental provision |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107702681A (en) | 2018-02-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107702681B (en) | Test device and method for simulating foundation settlement of large storage tank | |
| CN104677633B (en) | Radial direction hydrodynamic journal liquid polymers reliability test bench | |
| CN103776685A (en) | Static force load testing device for concrete beam | |
| CN109214033B (en) | Method and device for evaluating deformation of storage tank after foundation settlement | |
| CN102539101A (en) | Force limit control vibration test system and test method | |
| CN209400324U (en) | A kind of experimental provision for simulating pipe ring stress deformation in tunnel under different stress conditions | |
| CN101458142A (en) | Dynamometer measurement standard apparatus | |
| CN106248566A (en) | Frame-type constant load stress corrosion testing device | |
| WO2023124244A1 (en) | Positioning device and use method therefor | |
| CN107340177B (en) | Be applied to simple and easy device of manual loading of K type node static test | |
| CN101776554A (en) | Electro-hydraulic servo control electroporcelain bending-torsion testing machine | |
| CN203811459U (en) | Static load test device for concrete beam | |
| CN104174703B (en) | A kind of cut deal glacing flatness on-line measuring device | |
| CN203785964U (en) | Digital portable press | |
| CN101748747A (en) | Annular furnace base movable thread stand bolt positioning method | |
| CN109030242B (en) | Electromagnetic power rock direct shear apparatus and operation method | |
| CN104404940B (en) | A kind of Deep Soil Layers high pressure waterproof self-stabilising load test device | |
| CN204370398U (en) | A kind of Deep Soil Layers high pressure waterproof self-stabilising load test device | |
| CN204807401U (en) | Wall body plane extra income tie load force transmission frame device that evenly loads | |
| CN105280254B (en) | Device and installation method for nuclear fuel assembly charge and discharge operations | |
| CN103148984B (en) | Three-wire torsional pendulum method rigid body dynamic parameter test console | |
| CN203116912U (en) | Actively balanced rigid-body kinetic parameter testboard by means of three-wire pendulum | |
| CN203616050U (en) | Hydraulic reinforcing system | |
| CN202229837U (en) | Auxiliary calibrating device of fixed electronic weighing instrument | |
| CN110243592B (en) | Longitudinal feeding system reliability test device and test method with different guide rail layouts |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |