CN111537168A - Device for simulating large deformation of bridge substructure under transverse load and installation method - Google Patents
Device for simulating large deformation of bridge substructure under transverse load and installation method Download PDFInfo
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- CN111537168A CN111537168A CN202010347794.4A CN202010347794A CN111537168A CN 111537168 A CN111537168 A CN 111537168A CN 202010347794 A CN202010347794 A CN 202010347794A CN 111537168 A CN111537168 A CN 111537168A
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000009434 installation Methods 0.000 title claims abstract description 12
- 238000004873 anchoring Methods 0.000 claims description 26
- 229910000831 Steel Inorganic materials 0.000 claims description 21
- 239000010959 steel Substances 0.000 claims description 21
- 230000000712 assembly Effects 0.000 claims description 7
- 238000000429 assembly Methods 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 4
- 238000012937 correction Methods 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 abstract description 12
- 230000008859 change Effects 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000003825 pressing Methods 0.000 abstract description 2
- 230000008439 repair process Effects 0.000 abstract description 2
- 230000003068 static effect Effects 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 20
- 238000013461 design Methods 0.000 description 6
- 238000004458 analytical method Methods 0.000 description 4
- 230000003993 interaction Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005457 optimization Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0008—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings of bridges
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F13/00—Common constructional features or accessories
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F19/00—Hoisting, lifting, hauling or pushing, not otherwise provided for
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
- F16C11/06—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints
- F16C11/0619—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints the female part comprising a blind socket receiving the male part
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F2700/00—Lifting apparatus
- B66F2700/05—Hydraulic jacks
- B66F2700/052—Support- or transmission members
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Abstract
The invention relates to the technical field of constructional engineering, in particular to a device for simulating large deformation of a bridge substructure under a transverse load and an installation method, which are suitable for bridge maintenance, static pile pressing, foundation settlement, electric power maintenance, heavy object jacking, bridge and ship repair and construction, and are particularly used in the aspects of highway and railway construction, mechanical adjustment, equipment disassembly and the like. The device includes: the device comprises a first jack, a second jack and a temporary supporting device, wherein the end part of a mandril of the first jack is connected with a convex spherical element; the end part of a mandril of the second jack is connected with a concave spherical element, the central axes of the first jack and the second jack are on the same straight line and are in reverse opposite ejection, and the convex spherical element and the concave spherical element are mutually matched and connected; each pushing operation point can be continuously loaded, the device can adapt to the change of the rotating angles at two ends, each point can lock the pushing displacement, the device is installed in place once, and the existing equipment is fully utilized.
Description
Technical Field
The invention relates to the technical field of constructional engineering, in particular to a device for simulating large deformation of a bridge substructure under a transverse load and an installation method, which are suitable for bridge maintenance, static pile pressing, foundation settlement, electric power maintenance, heavy object jacking, bridge and ship repair and construction, and are particularly used in the aspects of highway and railway construction, mechanical adjustment, equipment disassembly and the like.
Background
At present, when the maximum pushing displacement is larger than the maximum stroke of the existing electric hydraulic jack, the existing single electric hydraulic jack cannot meet the requirement of continuous loading, and usually a cushion block is applied or the electric hydraulic jack specially meeting the requirement is adopted. The former can not realize the over-travel continuous loading, and the local stress of the structure is increased due to the automatic pressure relief of the individual jack; the latter has high material cost, and the jack is idle for a long time after pushing is finished, thereby causing resource waste.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention aims to provide a device for simulating a transverse load and large deformation of a bridge substructure, which aims to solve the technical problems in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the present invention provides a device for simulating a lateral load and large deformation of a bridge substructure, comprising:
the end part of an ejector rod of the first jack is connected with a convex spherical element;
the end part of a mandril of the second jack is connected with a concave spherical element, the central axes of the first jack and the second jack are on the same straight line and are oppositely butted, and the convex spherical element and the concave spherical element are mutually matched and connected;
the temporary supporting device comprises a stud, a shaft sleeve and a nut;
the upper part of the first base is connected with a channel steel, the first jack is installed on the channel steel of the first base, the lower part of the first base is hinged with a stud, and a nut is arranged on the stud;
the second base and the first base are oppositely arranged on two installation surfaces of an element to be tested, the upper portion of the second base is connected with a channel steel, the second jack is installed on the channel steel of the second base, the lower portion of the second base is hinged with a shaft sleeve, and the stud is movably sleeved in the shaft sleeve in a penetrating mode.
As a further technical scheme, a hinge seat is arranged at the lower part of the first base, and the end head of the stud is hinged to the hinge seat through a pin shaft.
As a further technical scheme, the lower part of the second base is provided with a hinged seat, and the end part of the shaft sleeve is hinged to the hinged seat through a pin shaft.
As a further technical scheme, a plurality of mounting holes are formed in the first base and are connected with anchoring holes of the mounting surface of the element to be tested through anchoring assemblies.
As a further technical scheme, a plurality of mounting holes are formed in the second base and are connected with anchoring holes of the mounting surface of the element to be tested through anchoring assemblies.
In a second aspect, the invention provides a method for installing the device for simulating the large deformation of the bridge substructure under the transverse load, which comprises the following steps:
s1, machining of spherical matching structure
The spherical surface matching structure comprises: the convex surface and the concave surface of the processed spherical surface matching structure can be ensured to be matched;
s2 fixed channel steel
Determining the positions of a first jack on a first base and a second jack on a second base, and respectively welding channel steel to the outer cylinders of the first jack and the second jack;
s3, installing a temporary supporting device
Hinging the end of the stud to a hinging seat of the first base through a pin shaft, hinging the end part of the shaft sleeve to a hinging seat of the second base through the pin shaft, and simultaneously sleeving the stud in the shaft sleeve;
s4, mounting the element to be tested
The first base and the second base are connected with the anchoring holes of the mounting surface of the element to be tested through the anchoring assemblies respectively, and the anchoring holes of the element to be tested are 3-5 mm larger than the anchor rods of the anchoring assemblies so as to be suitable for position correction.
As a further technical solution, the installation method comprises the steps of:
s5, debugging system
Gradually pressurizing during jacking, wherein the jacking stroke is 3mm, if the jack deforms in the pressurizing process, immediately stopping pressurizing, and continuing the operation after a new jack is added.
By adopting the technical scheme, the invention has the following beneficial effects:
1) the central axes of the first jack and the second jack are on the same straight line and are oppositely propped, each jacking operation point can be continuously loaded, and double pressure maintaining is realized.
2) The invention can adapt to the change of the rotation angle of two ends by connecting the convex spherical surface element and the concave spherical surface element, ensures the stable stress of the contact surfaces at two sides and meets the requirement of the rotation angle.
3) The invention is provided with a temporary supporting device to ensure that each point can lock, push and displace, and the phenomenon of back displacement is avoided. The two ends of the temporary supporting device are fixed on the contact surfaces, the temporary supporting device starts to push along with the jack and simultaneously displaces, when the displacement meets the pushing requirement, the nut is rotated to be attached to the shaft sleeve, and the displacement size can be locked.
4) The jack equipment is installed in place at one time, other elements do not need to be additionally installed, and the phenomenon that when the cushion block is additionally installed, the local jack is unloaded to cause local stress to be empty, so that the local jack moves back to influence test data is avoided.
5) The device fully utilizes the advantages of the existing equipment and the reliable installation process, has the advantages of reasonable structure, economy, reasonability, convenience and reliability in installation and the like, and is an electric hydraulic jack loading and pushing method with development prospect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a plan view of a device for simulating lateral load and large deformation of a bridge substructure according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a device for simulating lateral load and large deformation of a bridge substructure according to an embodiment of the present invention;
fig. 3 is a plan view of a comprehensive testing system provided in an embodiment of the present invention.
Icon: 1-a first base; 2-an anchoring assembly; 3-a first jack; 4-convex spherical elements; 5-a concave spherical element; 6-temporary support means; 7-channel steel; 8-a hinged seat; 9-a pin shaft; 10-a nut; 11-a stud; 12-a shaft sleeve; 13-a second jack; 14-a second base; 101-drilling a pile; 102-bridge bearing platform; 103-slide-resistant piles; 104-concrete walls; 105-a jack; 106-load wall.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
Example one
Referring to fig. 1 to 2, the present embodiment provides a device for simulating lateral load and large deformation of a bridge substructure, which includes: the lifting device comprises a first jack 3, a second jack 13, a first base 1 and a second base 14; the end part of the mandril of the first jack 3 is connected with a convex spherical surface element 4; the end part of a mandril of the second jack 13 is connected with a concave spherical element 5, the central axes of the first jack 3 and the second jack 13 are on the same straight line and are oppositely butted, and the convex spherical element 4 and the concave spherical element 5 are mutually matched and connected; the temporary supporting device 6 comprises a stud 11, a shaft sleeve 12 and a nut 10; the upper part of the first base 1 is connected with a channel steel 7, the first jack 3 is installed on the channel steel 7 of the first base 1, the lower part of the first base 1 is hinged with a stud 11, and a nut 10 is arranged on the stud 11; the second base 14 and the first base 1 are oppositely arranged on two mounting surfaces of an element to be tested, the upper portion of the second base 14 is connected with a channel steel 7, the second jack 13 is mounted on the channel steel 7 of the second base 14, the lower portion of the second base 14 is hinged with a shaft sleeve 12, and the stud 11 is movably sleeved in the shaft sleeve 12 in a penetrating mode. The embodiment solves the problem that the single-jack maximum stroke of the existing electric hydraulic jack cannot meet the problem of uneven stress of the structure caused by continuous loading and automatic pressure relief, and has the advantages of simple structure, low manufacturing cost and reusability.
In this embodiment, each pushing operation point can be continuously loaded and double pressure maintaining can be realized.
In this embodiment, the central axes of the first jack 3 and the second jack 13 are on the same straight line and are oppositely opposite to each other. The connection by means of the convex spherical element 4 and the concave spherical element 5 also allows a better transmission of the forces acting by the jack.
In the embodiment, the temporary supporting device 6 is arranged, so that each point can be locked, pushed and displaced, and the phenomenon of return movement is avoided. The two ends of the temporary supporting device 6 are fixed on the contact surfaces, and move along with the two jacks starting to push, when the displacement meets the pushing requirement, the nut 10 is rotated to be attached to the shaft sleeve 12, and the displacement size can be locked.
In this embodiment, each pushing point is provided with a spherical matching structure of a revolute pair formed by concave-convex spherical elements 4, which adapts to the change of the rotation angle at two ends, ensures the stability of the stress of the joint body at two sides, and meets the requirement of the rotation angle.
In the embodiment, the jacking equipment is installed in place at one time without additionally installing other elements. When the cushion block is additionally installed, the local stress is prevented from being emptied due to the unloading of the local jack, so that the local return is caused, and the test data is prevented from being influenced.
The embodiment makes full use of the existing equipment and saves part of material cost. If the customized jacks are adopted, the material cost is high, and the jacks can be idle for a long time after the pushing is finished, so that the resource waste is caused.
In this embodiment, as a further technical solution, a hinge seat 8 is disposed at the lower portion of the first base 1, and an end of the stud 11 is hinged to the hinge seat 8 through a pin shaft 9.
In this embodiment, as a further technical solution, a hinge seat 8 is disposed at a lower portion of the second base 14, and an end portion of the shaft sleeve 12 is hinged to the hinge seat 8 through a pin 9.
In this embodiment, as a further technical solution, a plurality of mounting holes are provided on the first base 1, and the mounting holes are connected with the anchoring holes of the mounting surface of the element to be tested through the anchoring assemblies 2.
In this embodiment, as a further technical solution, a plurality of mounting holes are provided on the second base 14, and the mounting holes are connected with the anchoring holes of the mounting surface of the element to be tested through the anchoring assembly 2.
Example two
The embodiment provides an installation method of the device for simulating the large deformation of the bridge substructure under the transverse load, which comprises the following steps:
s1, machining of spherical matching structure
The spherical surface matching structure comprises: the convex surface and the concave surface of the processed spherical matching structure of the concave spherical element 5 and the convex spherical element 4 can be matched, so that the spherical matching structure can adapt to the change of the rotation angles at two ends, ensure the stress stability of the two side joints, and avoid certain dislocation of the two elements due to the over-small contact surface.
S2 fixing channel steel 7
The method comprises the steps of determining the positions of a first jack 3 on a first base 1 and a second jack 13 on a second base 14, welding a channel steel 7 to the first jack 3 and the second jack 13 respectively, and welding the channel steel 7 to the side, where relative movement of the jacks is to occur, so as to prevent the relative movement of the jacks. The specification of the channel steel 7 is selected according to the specification of the jack so as to avoid the jack being unable to be stably fixed;
s3, installing the temporary supporting device 6
The end of the stud 11 is hinged to a hinge seat 8 of the first base 1 through a pin shaft 9, the end of the shaft sleeve 12 is hinged to a hinge seat 8 of the second base 14 through the pin shaft 9, and meanwhile, the stud 11 penetrates through the shaft sleeve 12, so that the temporary supporting device 66 can rotate, and the requirement of operation corner is met;
s4, mounting the element to be tested
When the position is determined, all the experimental elements are installed in sequence, and the experimental elements are firmly and correctly installed without omission. The first base 1 and the second base 14 are connected with the anchoring holes of the mounting surface of the element to be tested through the anchoring assembly 2 respectively, and in order to reduce the influence of the anchoring position on the coaxiality of each element, the diameter of the anchoring hole of the element to be tested is 3-5 mm larger than that of the anchor rod of the anchoring assembly 2, so that the device is suitable for position correction.
As a further technical solution, the installation method comprises the steps of:
s5, debugging system
Gradually pressurizing during jacking, wherein the jacking stroke is 3mm, if the jack deforms in the pressurizing process, immediately stopping pressurizing, and continuing the operation after a new jack is added.
In summary, by adopting the technical scheme, the invention has the following beneficial effects:
1) the central axes of the first jack 3 and the second jack 13 are on the same straight line and are oppositely jacked, each jacking operation point can be continuously loaded, and double pressure maintaining is realized.
2) The invention is connected with the concave spherical element 5 through the convex spherical element 4, can adapt to the change of the rotation angle at two ends, ensures the stable stress of the contact surfaces at two sides and meets the requirement of the rotation angle.
3) The invention is provided with the temporary supporting device 6, so that each point can be ensured to be locked, pushed and displaced, and the phenomenon of back displacement is avoided. The two ends of the temporary supporting device 6 are fixed on the contact surfaces, and move along with the pushing of the jack, when the displacement meets the pushing requirement, the nut 10 is rotated to be attached to the shaft sleeve 12, and the displacement size can be locked.
4) The jack equipment is installed in place at one time, other elements do not need to be additionally installed, and the phenomenon that when the cushion block is additionally installed, the local jack is unloaded to cause local stress to be empty, so that the local jack moves back to influence test data is avoided.
5) The device fully utilizes the advantages of the existing equipment and the reliable installation process, has the advantages of reasonable structure, economy, reasonability, convenience and reliability in installation and the like, and is an electric hydraulic jack loading and pushing method with development prospect.
EXAMPLE III
The embodiment provides a comprehensive test system of a device for simulating the large deformation of a bridge substructure under a transverse load. The embodiment is directed at the problem that the existing railway design is still designed in a professional mode under the condition of facing complex geology, so that the structure under an interaction combined system of a landslide-anti-slide pile-bridge structure is mostly lack of theoretical basis according to experience, the stress and deformation of the designed structure have the possibility of exceeding the limit, a single research means has inevitable defects, aiming at all the problems, the project develops comprehensive test research comprising numerical calculation, theoretical analysis, indoor test and field full-scale test, and the main test thought comprises the following steps:
firstly, selecting a proper test work point, and carrying out deep geomechanics analysis on the work point
Selecting a proper working point to determine a main shaft section (namely a prototype section), further determining a test section by combining the actual condition of the working point, carrying out basic geomechanical analysis on the section, determining the most unfavorable sliding surface and analyzing the current stable state of the slope body.
Secondly, the design of the test system is carried out at the selected work point, and the optimized design is carried out on the components of the test system
A landslide body, an anti-slide pile and bridge structure combined system test system is comprehensively developed, a field full-scale test system consisting of a model structure system, a large-tonnage servo jack loading system and a multifunctional comprehensive test system is constructed, technical and economic optimization is carried out on a plurality of technical links of each subsystem, and the purposes of meeting test requirements and reducing cost are achieved.
Thirdly, design of working conditions of loading test
And extracting the displacement of the depth position of the loading wall corresponding to the anti-slide pile under each unfavorable working condition as a displacement value of the jack pushing and loading wall, so as to realize the simulation of each working condition of the prototype section.
Fourthly, the interaction mechanism of the landslide-slide-resistant pile-bridge structure combined system is deeply researched and analyzed, and the interaction mechanism of the landslide, the slide-resistant pile and the bridge structure is deeply analyzed through field test data acquisition, processing and analysis.
Fifth, design optimization suggestions and engineering strategies
Suggestions with guiding significance are provided from three aspects of line selection, roadbed supporting and retaining reinforcement structures and bridge structure design optimization, and suitable engineering countermeasures are provided for built or under-construction engineering.
The overall scheme of this example is designed as follows:
as shown in fig. 3, the comprehensive test system mainly includes: bridge cap 102, bored pile 101, loading wall 106 (force transfer optimized loading structure) and slide-resistant pile 103; concrete walls 104 are arranged among the three anti-slide piles 103; the loading wall 106 is positioned between the middle slide-resistant pile 103 and the bridge bearing platform 102; the loading wall 106 is connected with the middle slide-resistant pile 103 through a plurality of jacks 105, and the loading wall 106 is pushed through the jacks 105. The jack 105 in this embodiment may adopt the device for simulating the large deformation of the bridge substructure under the lateral load in the first embodiment. The embodiment solves the problem that the single-jack maximum stroke of the existing electric hydraulic jack cannot meet the problem of uneven stress of the structure caused by continuous loading and automatic pressure relief, and has the advantages of simple structure, low manufacturing cost and reusability.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. A device for simulating the large deformation of a bridge substructure under a transverse load is characterized by comprising:
the end part of an ejector rod of the first jack is connected with a convex spherical element;
the end part of a mandril of the second jack is connected with a concave spherical element, the central axes of the first jack and the second jack are on the same straight line and are oppositely butted, and the convex spherical element and the concave spherical element are mutually matched and connected;
the temporary supporting device comprises a stud, a shaft sleeve and a nut;
the upper part of the first base is connected with a channel steel, the first jack is installed on the channel steel of the first base, the lower part of the first base is hinged with a stud, and a nut is arranged on the stud;
the second base and the first base are oppositely arranged on two installation surfaces of an element to be tested, the upper portion of the second base is connected with a channel steel, the second jack is installed on the channel steel of the second base, the lower portion of the second base is hinged with a shaft sleeve, and the stud is movably sleeved in the shaft sleeve in a penetrating mode.
2. The device for simulating the large deformation of a bridge substructure under the action of a transverse load according to claim 1, wherein the lower part of the first base is provided with a hinge seat, and the end head of the stud is hinged to the hinge seat through a pin shaft.
3. The device for simulating the large deformation of the bridge substructure under the transverse load according to claim 1, wherein the lower part of the second base is provided with a hinge seat, and the end part of the shaft sleeve is hinged to the hinge seat through a pin shaft.
4. The device for simulating the large deformation of a bridge substructure under transverse load according to claim 1, wherein a plurality of mounting holes are provided on the first base, and the mounting holes are connected with the anchoring holes of the mounting surface of the element to be tested through the anchoring components.
5. The device for simulating the large deformation of a bridge substructure under transverse load according to claim 1, wherein the second base is provided with a plurality of mounting holes, and the mounting holes are connected with the anchoring holes of the mounting surface of the element to be tested through the anchoring components.
6. A method for installing a device for simulating the large deformation of a bridge substructure according to any of claims 1 to 5, comprising the steps of:
s1, machining of spherical matching structure
The spherical surface matching structure comprises: the convex surface and the concave surface of the processed spherical surface matching structure can be ensured to be matched;
s2 fixed channel steel
Determining the positions of a first jack on a first base and a second jack on a second base, and respectively welding channel steel to the outer cylinders of the first jack and the second jack;
s3, installing a temporary supporting device
Hinging the end of the stud to a hinging seat of the first base through a pin shaft, hinging the end part of the shaft sleeve to a hinging seat of the second base through the pin shaft, and simultaneously sleeving the stud in the shaft sleeve;
s4, mounting the element to be tested
The first base and the second base are connected with the anchoring holes of the mounting surface of the element to be tested through the anchoring assemblies respectively, and the anchoring holes of the element to be tested are 3-5 mm larger than the anchor rods of the anchoring assemblies so as to be suitable for position correction.
7. The method of installation according to claim 6, comprising the steps of:
s5, debugging system
Gradually pressurizing during jacking, wherein the jacking stroke is 3mm, if the jack deforms in the pressurizing process, immediately stopping pressurizing, and continuing the operation after a new jack is added.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010347794.4A CN111537168A (en) | 2020-04-28 | 2020-04-28 | Device for simulating large deformation of bridge substructure under transverse load and installation method |
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| CN202010347794.4A CN111537168A (en) | 2020-04-28 | 2020-04-28 | Device for simulating large deformation of bridge substructure under transverse load and installation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113484053A (en) * | 2021-06-22 | 2021-10-08 | 成兰铁路有限责任公司 | Equivalent applying device for simulating load of overlying soil mass of bridge bearing platform and mounting method |
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2020
- 2020-04-28 CN CN202010347794.4A patent/CN111537168A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113484053A (en) * | 2021-06-22 | 2021-10-08 | 成兰铁路有限责任公司 | Equivalent applying device for simulating load of overlying soil mass of bridge bearing platform and mounting method |
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Effective date of registration: 20220129 Address after: 100081 Beijing city Haidian District Daliushu Road No. 2 Applicant after: CARS RAILWAY ENGINEERING Research Institute Address before: 100081 3rd floor, railway construction test building, No.2 Daliushu Road, Haidian District, Beijing Applicant before: Beijing Tieche Engineering Testing Co.,Ltd. Applicant before: CARS RAILWAY ENGINEERING Research Institute Applicant before: CHINA ACADEMY OF RAILWAY SCIENCES Corp.,Ltd. |