CN112924128A - Pier rolling stone impact model and impact force measuring method - Google Patents
Pier rolling stone impact model and impact force measuring method Download PDFInfo
- Publication number
- CN112924128A CN112924128A CN202110132582.9A CN202110132582A CN112924128A CN 112924128 A CN112924128 A CN 112924128A CN 202110132582 A CN202110132582 A CN 202110132582A CN 112924128 A CN112924128 A CN 112924128A
- Authority
- CN
- China
- Prior art keywords
- simulated
- pier
- simulation
- landslide
- impact
- 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.)
- Pending
Links
- 239000004575 stone Substances 0.000 title claims abstract description 62
- 238000005096 rolling process Methods 0.000 title claims abstract description 60
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000004088 simulation Methods 0.000 claims abstract description 64
- 239000011435 rock Substances 0.000 claims abstract description 16
- 230000000712 assembly Effects 0.000 claims abstract description 12
- 238000000429 assembly Methods 0.000 claims abstract description 12
- 239000007787 solid Substances 0.000 claims description 4
- 239000011150 reinforced concrete Substances 0.000 claims description 3
- 238000012360 testing method Methods 0.000 description 11
- 238000013461 design Methods 0.000 description 5
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- 241001504664 Crossocheilus latius Species 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009863 impact test Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/08—Shock-testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0052—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes measuring forces due to impact
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Abstract
The invention discloses a pier rolling stone impact model which comprises a simulated landslide, simulated rolling stones, a simulated pier and a pressure sensor, wherein the simulated landslide is used for supporting the simulated rolling stones and simulating a falling track of the simulated rolling stones, and a plurality of groups of releasing assemblies used for releasing the simulated rolling stones are further arranged on the simulated landslide. A method for measuring the impact force of a rolling stone impact model of a pier comprises the following steps: a. mounting the simulation bridge pier and the simulation landslide on the base; b. placing the simulated rolling stones on release assemblies at different positions for free release and recording experimental data during each impact; c. and deducing and calculating the most reasonable pier size and distribution density through a mechanical formula. The invention measures the impact force generated to the simulation bridge piers when the simulation rock rolls at different positions slide down by matching the simulation bridge piers arranged in a reduced scale with the simulation slide slopes arranged in an adjustable distance between the simulation bridge piers and releasing the simulation rock rolls at different positions of the simulation slide slopes, thereby playing an important role in designing the strength of the bridge piers.
Description
Technical Field
The invention relates to the technical field of pier impact resistance tests, in particular to a pier rolling stone impact model and an impact force measuring method.
Background
The bridge piers are used as supports of the bridge deck and play an extremely important role in safety of the bridge deck, and the bridge piers are generally built at a depression of the terrain, so that landslides are accompanied, rolling stones on the landslides can generate huge impact on the bridge piers in the sliding process, and even the bridge piers can collapse.
The impact force to the bridge pier when detecting out the rock roll landing on the different height landslide to design the bridge pier size rationally and played crucial effect to bridge pier safety, but do not have the impact that this type of model can simulate and measure the rock roll to the bridge pier among the prior art.
Therefore, in order to solve the above problems, a pier rolling stone impact model and an impact force measuring method are needed, which can simply and intuitively measure impact forces generated by rolling stones sliding at different positions through the model, so as to design reasonable pier sizes and distribution densities, and provide an important theoretical basis for calculation in bridge design.
Disclosure of Invention
In view of the above, the present invention aims to overcome the defects in the prior art, and provide a pier rolling stone impact model and an impact force measurement method, which can simply and intuitively measure impact forces generated by rolling stone sliding at different positions through the model, so as to design reasonable pier sizes and distribution densities, and provide an important theoretical basis for calculation in bridge design.
The pier rolling stone impact model comprises a simulated landslide, simulated rolling stones, simulated piers and a pressure sensor, wherein the simulated landslide is used for supporting the simulated rolling stones and simulating the falling tracks of the simulated rolling stones, a plurality of groups of release assemblies used for releasing the simulated rolling stones are further arranged on the simulated landslide, the simulated landslide is used for simulating landslides around the piers and supporting the simulated rolling stones, the simulated rolling stones can fall freely on the simulated landslide and impact the simulated piers to test measurement data required by tests, and the release assemblies arranged on the simulated landslide are mainly used for assisting the simulated rolling stones to fall freely.
Further, pressure sensor set up in be used for measuring the impact of simulation stone roller on the impact surface of simulation pier, pressure sensor is no longer repeated here for very mature prior art, and pressure sensor's pressure receiving end is fixed to be set up on the impact surface of simulation pier for accept to come from the striking of simulation stone roller and measure the impact.
Furthermore, the simulated rock is a solid sphere which can be made of stone or cast iron, the initial state of the simulated rock is not considered in the test process, and test data are stable.
Furthermore, the simulation pier is a reduced scale model of the prototype pier, is formed by pouring reinforced concrete, can have relative strength, and has reference value in the test.
Further, the release assembly comprises a baffle hinged with the simulated landslide and a pull rope for driving the baffle to move towards the slope surface of the landslide, the baffle is elastically hinged with the simulated landslide through a coil spring, the baffle is kept vertical to the slope surface of the simulated landslide through the coil spring to support and position the simulated rolling stone, and the pull rope is pulled to enable the baffle to overcome the elasticity of the coil spring and rotate towards the slope surface of the simulated landslide to enable the simulated rolling stone to freely roll down and impact on the simulated bridge pier.
Furthermore, the release assemblies are multiple groups and are respectively arranged on different height positions of the simulated landslide, so that the simulated rock rolls can be conveniently arranged on different positions for impact tests.
Further, simulation pier and simulation landslide are installed on the base, just the horizontal relative distance between simulation pier and the simulation landslide is adjustable, and the impact that the simulation rock that different distances department between simulation pier and the simulation landslide produced can be measured to the regulation of the horizontal relative position between simulation pier and the simulation landslide.
The impact force measuring method of the pier rolling stone impact model comprises the following steps:
a. mounting the simulation bridge pier and the simulation landslide on the base;
b. placing the simulated rolling stones on release assemblies at different positions for free release and recording experimental data during each impact;
c. and deducing and calculating the most reasonable pier size and distribution density through a mechanical formula.
The invention has the beneficial effects that: the invention discloses a pier rolling stone impact model and an impact force measuring method, which are used for measuring the impact force generated by the simulation piers when the simulation rolling stones at different positions slide down by matching the simulation piers arranged in a reduced manner in the same proportion with the simulation landslide arranged in an adjustable manner and releasing the simulation rolling stones at different positions of the simulation landslide, and play an important role in designing the strength of the piers.
Drawings
The invention is further described below with reference to the following figures and examples:
FIG. 1 is a schematic diagram of the structure of the present invention for simulating rolling rock not falling;
FIG. 2 is a schematic view of a rock slide-off simulation structure according to the present invention;
fig. 3 is an enlarged schematic view of a portion a in fig. 1.
Detailed Description
Fig. 1 is a schematic structural diagram of the present invention, and as shown in the drawing, a bridge pier rolling stone impact model in this embodiment includes a simulated landslide 1, a simulated rolling stone 2, a simulated bridge pier 3, and a pressure sensor 4, where the simulated landslide 1 is used to support the simulated rolling stone 2 and simulate a sliding track of the simulated rolling stone 2, the simulated landslide 1 is further provided with a plurality of sets of release assemblies for releasing the simulated rolling stone 2, the simulated landslide 1 is used to simulate a landslide around the bridge pier 3 and support the simulated rolling stone 2, so as to ensure that the simulated rolling stone 2 can fall freely on the simulated landslide 1 and impact the simulated bridge pier 3 to test measurement data required by a test, and the release assemblies provided on the simulated landslide 1 are mainly used to assist the free sliding of the simulated rolling stone 2.
In this embodiment, pressure sensor 4 set up in be used for measuring the impact of simulation stone 2 on the impact surface of simulation pier 3, pressure sensor 4 is no longer repeated here for very mature prior art, and pressure sensor 4's pressure receiving terminal is fixed to be set up on the impact surface of simulation pier 3 for accept to come from the striking of simulation stone 2 and measure the impact.
In this embodiment, the simulated rolling stone 2 is a solid sphere, the solid sphere can be made of stone or cast iron, the initial state of the simulated rolling stone is not considered in the test process, and the test data is stable.
In this embodiment, the simulation pier 3 is a reduced-scale model of a prototype pier, is formed by pouring reinforced concrete, has relative strength, and has a reference value in a test.
In this embodiment, the release assembly includes a baffle 5a hinged to the simulated landslide 1, and a pull rope 5b for driving the baffle 5a to move toward the slope of the landslide, wherein the baffle 5a is elastically hinged to the simulated landslide 1 through a coil spring 5c, the baffle 5a is kept perpendicular to the slope of the simulated landslide 1 through the coil spring 5c to support and position the simulated rolling rock 2, and the pull rope 5b is pulled to enable the baffle 5a to overcome the elastic force of the coil spring 5c and rotate toward the slope of the simulated landslide 1 so as to enable the simulated rolling rock 2 to freely roll down and impact on the simulated pier 3.
In this embodiment, the release assemblies are in multiple groups, and are respectively arranged on the different height positions of the simulated landslide 1, so that the simulated rolling stones 2 can be conveniently arranged on different positions for impact tests.
In this embodiment, simulation pier 3 and simulation landslide 1 are installed on base 5, just the horizontal relative distance between simulation pier 3 and the simulation landslide 1 is adjustable, and the impact that simulation pier 3 and the simulation landslide 1 different distance department's simulation rock 2 produced between the regulation of the horizontal relative position between simulation pier 3 and the simulation landslide 1 can be measured.
The impact force measuring method of the pier rolling stone impact model comprises the following steps:
a. installing a simulation bridge pier 3 and a simulation landslide 1 on a base;
b. placing the simulated rock 2 on release components at different positions for free release and recording experimental data of each impact;
c. and deducing and calculating the most reasonable pier size and distribution density through a mechanical formula.
The invention discloses a pier rolling stone impact model and an impact force measuring method, which are used for measuring the impact force generated to a simulation pier 3 when a simulation rolling stone 2 at different positions slides down by matching a simulation pier 3 which is arranged in a reduced manner in the same proportion with a simulation landslide 1 which is arranged in an adjustable distance with the simulation pier 3 and releasing the simulation rolling stone 2 at different positions of the simulation landslide 1, thereby playing an important role in designing the strength of the pier.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (8)
1. The utility model provides a pier stone roll striking model which characterized in that: the device comprises a simulated landslide, a simulated rolling stone, a simulated pier and a pressure sensor, wherein the simulated landslide is used for supporting the simulated rolling stone and simulating a track for simulating the rolling stone to slide down, and a plurality of groups of releasing assemblies for releasing the simulated rolling stone are further arranged on the simulated landslide.
2. The pier rolling stone impact model of claim 1, wherein: the pressure sensor is arranged on the impact surface of the simulation bridge pier and used for measuring the impact force of the simulation rock.
3. The pier rolling stone impact model of claim 1, wherein: the simulated rock is a solid sphere.
4. The pier rolling stone impact model of claim 1, wherein: the simulation pier is a reduced scale model of a prototype pier and is formed by pouring reinforced concrete.
5. The pier rolling stone impact model of claim 1, wherein: the release assembly comprises a baffle hinged with the simulated landslide and a pull rope for driving the baffle to move towards the slope surface of the simulated landslide, and the baffle is elastically hinged with the landslide through a coil spring.
6. The pier rolling stone impact model of claim 5, wherein: the release assemblies are in multiple groups and are respectively arranged on different height positions of the simulated landslide.
7. The pier rolling stone impact model of claim 1, wherein: the simulation bridge pier and the simulation landslide are installed on the base, and the horizontal relative distance between the simulation bridge pier and the simulation landslide is adjustable.
8. An impact force measuring method using the rolling stone impact model of any one of the piers of claims 1 to 7, characterized in that: the method comprises the following steps:
a. mounting the simulation bridge pier and the simulation landslide on the base;
b. placing the simulated rolling stones on release assemblies at different positions for free release and recording experimental data during each impact;
c. and deducing and calculating the most reasonable pier size and distribution density through a mechanical formula.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110132582.9A CN112924128A (en) | 2021-01-31 | 2021-01-31 | Pier rolling stone impact model and impact force measuring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110132582.9A CN112924128A (en) | 2021-01-31 | 2021-01-31 | Pier rolling stone impact model and impact force measuring method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112924128A true CN112924128A (en) | 2021-06-08 |
Family
ID=76168941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110132582.9A Pending CN112924128A (en) | 2021-01-31 | 2021-01-31 | Pier rolling stone impact model and impact force measuring method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112924128A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114636539A (en) * | 2022-03-14 | 2022-06-17 | 重庆科技学院 | Pier rockfall impact device |
| CN115112472A (en) * | 2022-07-13 | 2022-09-27 | 西南石油大学 | Model test device and test method for landslide debris flow impact disaster bearing body |
| CN116451525A (en) * | 2023-03-27 | 2023-07-18 | 长安大学 | Falling stone bridge collision failure probability analysis method, electronic equipment and storage medium |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105052312A (en) * | 2015-07-22 | 2015-11-18 | 重庆市双恩农机制造有限公司 | Simple sowing pipe |
| CN107643158A (en) * | 2017-10-25 | 2018-01-30 | 吉林大学 | The simulated testing system that a kind of rockfall starts, moves, hit |
| CN207675405U (en) * | 2018-01-08 | 2018-07-31 | 西南交通大学 | A kind of experimental rig of mud-rock-flow-impact bridge pier |
| CN208091668U (en) * | 2018-04-28 | 2018-11-13 | 河海大学 | A kind of experimental provision of simulation mud-rock-flow-impact bridge |
| CN211291934U (en) * | 2020-03-09 | 2020-08-18 | 西南交通大学 | Collapse rock fall impact force simulation test device |
| CN111982446A (en) * | 2020-06-30 | 2020-11-24 | 国网浙江省电力有限公司湖州供电公司 | Device and method for testing accessory foundation of power transmission line impacted by rolling stones |
-
2021
- 2021-01-31 CN CN202110132582.9A patent/CN112924128A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105052312A (en) * | 2015-07-22 | 2015-11-18 | 重庆市双恩农机制造有限公司 | Simple sowing pipe |
| CN107643158A (en) * | 2017-10-25 | 2018-01-30 | 吉林大学 | The simulated testing system that a kind of rockfall starts, moves, hit |
| CN207675405U (en) * | 2018-01-08 | 2018-07-31 | 西南交通大学 | A kind of experimental rig of mud-rock-flow-impact bridge pier |
| CN208091668U (en) * | 2018-04-28 | 2018-11-13 | 河海大学 | A kind of experimental provision of simulation mud-rock-flow-impact bridge |
| CN211291934U (en) * | 2020-03-09 | 2020-08-18 | 西南交通大学 | Collapse rock fall impact force simulation test device |
| CN111982446A (en) * | 2020-06-30 | 2020-11-24 | 国网浙江省电力有限公司湖州供电公司 | Device and method for testing accessory foundation of power transmission line impacted by rolling stones |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114636539A (en) * | 2022-03-14 | 2022-06-17 | 重庆科技学院 | Pier rockfall impact device |
| CN115112472A (en) * | 2022-07-13 | 2022-09-27 | 西南石油大学 | Model test device and test method for landslide debris flow impact disaster bearing body |
| CN116451525A (en) * | 2023-03-27 | 2023-07-18 | 长安大学 | Falling stone bridge collision failure probability analysis method, electronic equipment and storage medium |
| CN116451525B (en) * | 2023-03-27 | 2023-09-12 | 长安大学 | Falling stone bridge collision failure probability analysis method, electronic equipment and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112924128A (en) | Pier rolling stone impact model and impact force measuring method | |
| CN109520696B (en) | Multi-point multi-directional drop hammer impact device and test method | |
| CN102853989A (en) | Swing aeroelastic model and shock-test wind tunnel test method thereby | |
| CN205475369U (en) | Physical simulation test device is strutted to landslide friction pile | |
| CN109506870A (en) | A kind of cable type guiding orientation percussion mechanism for rock-fall protection system sinker dynamic test | |
| CN210108669U (en) | Bridge impact test device | |
| CN111982446A (en) | Device and method for testing accessory foundation of power transmission line impacted by rolling stones | |
| CN105719538A (en) | Momentum conservation verification device based on magnetic powder display | |
| CN112526101B (en) | Model test device and test method for measuring dynamic parameters of rolling stones | |
| CN201152841Y (en) | Full-automatic monkey hammer type benkelman beams deflectometer | |
| CN102435371A (en) | Rolling stone impact force testing device | |
| CN106525596B (en) | Lateral bedding counter-force coefficient indoor test device under different stress paths | |
| CN103486940B (en) | Tennis specification checkout gear | |
| CN201885922U (en) | Flexible suspension deflection sensor | |
| CN202947959U (en) | Initial adhesion testing device | |
| CN107144414B (en) | A kind of experimental provision that oiling slideway in ship longitudinal direction is lauched | |
| CN204575459U (en) | A kind of flexural member Mechanics Performance Testing device | |
| CN206431924U (en) | A kind of Physical Experiment apparatus for demonstrating | |
| CN210533852U (en) | Swing impact test device for fruit collision and damage mechanical behavior assessment | |
| CN108847093B (en) | Physical teaching is with oblique throwing motion experiment presentation device | |
| CN107941691B (en) | Surface friction coefficient tester for bulk material | |
| CN114112292B (en) | Large-span bridge high-order vortex-induced vibration wind tunnel test model system and test method thereof | |
| CN202853992U (en) | Tester for rebound modulus of soil matrix | |
| CN213091676U (en) | Slump detection device | |
| CN208432457U (en) | A kind of indoor simulation device with low-strain dynamic measure method test pile stiffness value |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210608 |
|
| RJ01 | Rejection of invention patent application after publication |