CN105133672A - Dynamic impact test platform for flexible protection system - Google Patents
Dynamic impact test platform for flexible protection system Download PDFInfo
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- CN105133672A CN105133672A CN201510601460.4A CN201510601460A CN105133672A CN 105133672 A CN105133672 A CN 105133672A CN 201510601460 A CN201510601460 A CN 201510601460A CN 105133672 A CN105133672 A CN 105133672A
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- flexible protection
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Abstract
The invention discloses a dynamic impact test platform for a flexible protection system. The dynamic impact test platform for the flexible protection system comprises an impact test block used for simulating a falling stone, lifting equipment used for lifting and releasing the impact test block and a flexible protection system test model, and further comprises a reaction wall used for installing the flexible protection system test model and a foundation pit used for supplying a back impact space for an impact test and playing a protection role; the reaction wall is vertically arranged on one side of the foundation pit. According to the dynamic impact test platform for the flexible protection system, the test platform can be built on a nearby field, the flexible protection system test model is installed through the reaction wall, a test site is not limited by the on-site environment, the test equipment does not need to be carried to a farther mountain slope for every test, the test cost is low, and the efficiency is high; the impact test and data acquisition can be conveniently and repeatedly performed.
Description
Technical field
The present invention relates to side slope protection technical field, be specially a kind of flexible protection systems dynamic impact test platform.
Background technology
Falling Rocks is the recurrent a kind of natural calamity in China mountain area, and generation is unexpected and frequency is high, constitutes serious threat to traffic safety and people's lives and properties.Passive flexible protective is a kind of newer Falling Rocks diaster prevention and control technology, this technology with wire rope and flexible net for primary clustering, adopting the preventing principle of " defeating a force with a tenderness ", geology and the climate damages such as domatic slump, blasting flyrock, pendant thing, snowslide can be prevented and treated when not destroying former domatic natural situation.The height of guard system performance determines the quality of protection effect, but the domestic test platform that there is no detection guard system performance at present, therefore it is particularly important to carry out rock-fall impact test, how to simulate this process of rock-fall impact flexible protection systems, test is allowed to have place, if this technical problem can not effectively solve, just the test of system detection of dynamic cannot be carried out.
And external passive flexible protection systems test is utilize existing hillside to carry out impact test substantially, its shortcoming is that test site is easily by the restriction of site environment, and test site is often comparatively far away apart from urban district, the cost of each test is relatively high, and the time of cost is more.
Summary of the invention
For the problems referred to above, the object of the present invention is to provide a kind of reduced experimentation cost of building nearby, improve the flexible protection systems dynamic impact test platform of test efficiency.Technical scheme is as follows:
A kind of flexible protection systems dynamic impact test platform, comprise the impact test block for simulating falling rocks, for promoting and discharging the lifting appliance and flexible protection systems test model that impact test block, also comprise the counter force wall for installing flexible protection systems test model, and provide recoil space for impact test and play the foundation ditch of protective action; Described counter force wall is vertically installed in the side of foundation ditch.
Further, described flexible protection systems test model comprises protective screening and pressure-reducing ring, and is vertically fixed on the steel column of more than two or two of counter force wall sustained height; Described protective screening is fixed between two adjacent steel columns by the supporting rope being arranged on its surrounding; Described steel column is connected with counter force wall by anchor line away from one end of counter force wall; Described pressure-reducing ring is arranged on anchor line and supporting rope.
Further, described counter force wall is provided with the equally distributed anchor hole running through counter force wall, described steel column is fixed on steel column pedestal near one end of counter force wall, and described steel column pedestal and anchor line are by being arranged on anchor pole in anchor hole and counter force wall is fixed.
Further, described anchor line is also provided with pulling force sensor.
Further, described impact test block is regular polyhedron, and it is highly 0.4m-2m, and weight is 0.25t-25t.
Further, the protection hole of inverted trapezoidal is also provided with bottom described foundation ditch.
Further, described lifting appliance adopts moveable straddle truck.
The invention has the beneficial effects as follows: test platform of the present invention can build the place nearby, utilize counter force wall to install flexible protection systems test model, test site does not limit by site environment, carries testing equipment to hillside far away when not needing to test at every turn, at the bottom of experimentation cost, efficiency is high; And can facilitate and repeatedly carry out impact test and data acquisition.
Accompanying drawing explanation
Fig. 1 is flexible protection systems dynamic impact test platform structure schematic diagram of the present invention.
Fig. 2 is foundation ditch of the present invention and counter force wall structural perspective.
Fig. 3 is foundation ditch of the present invention and counter force wall front view.
Fig. 4 is foundation ditch of the present invention and counter force wall top view.
Fig. 5 is flexible protection systems test model front view of the present invention.
Fig. 6 is flexible protection systems test model top view of the present invention.
Fig. 7 is flexible protection systems test model scheme of installation of the present invention.
Fig. 8 is that the present invention impacts test block structural representation.
In figure: 1-counter force wall; 2-lifting appliance; 3-impacts test block; 4-flexible protection systems test model; 5-foundation ditch; 6-protects hole; 7-rail; 41-steel column; 42-protective screening; 43-anchor line; 44-pressure-reducing ring; 45-supporting rope; 46-steel column pedestal.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention will be further described: a kind of flexible protection systems dynamic impact test platform, comprise the impact test block 3 for simulating falling rocks, for promoting and discharging the lifting appliance 2 and flexible protection systems test model 4 that impact test block 3, also comprise the counter force wall 1 for installing flexible protection systems test model 4, and provide recoil space for impact test and play the foundation ditch 5 of protective action; Described counter force wall 1 is vertically installed in the side of foundation ditch 5.
Lifting appliance 2 for completing the installation of flexible protection systems test model 4 and impacting the lifting of test block 3, and impacts test block 3 by automatic releasing device release after impact test block 3 reaches the height of test requirements document, makes its free-falling, completes impact test.According to test requirements document, lifting appliance 2 can be equipped with two suspension hooks, and the biggest lifting capacity of each suspension hook is respectively 5 tons, 25 tons, can meet the user demand of different impact energys, and suspension hook is 30m to the maximum height on ground, test site; The length of lifting appliance orbit must ensure that lifting appliance 2 can use in pilot region, and the distance between orbit is 24.5m.Lifting appliance 2 adopts straddle truck, and orbit adopts the rail 7 arranged outside ability foundation ditch 5.
Foundation ditch 5 and counter force wall 1 are the important component part in shock table, and both all adopt concrete structure and are linked to be an entirety.
Counter force wall 1 is for the installation of flexible protection systems test model 4, in order to satisfied different steel column 41 spacing (the steel column spacing of domestic conventional passive flexible protection systems is 10m), (domestic conventional passive flexible protection systems steel column height is 3m, 4m, 5m, 6m to different steel column 41 height, maximum height can reach 7m) the installation of passive flexible protection systems test model 4, the height of counter force wall 1 more than ground is 10.5m, length is 34m, and counter force wall 1 being provided with the equally distributed anchor hole running through counter force wall 1, anchor hole is spaced apart 500mm × 500mm.
Foundation ditch 5 must meet the deformation requirements of passive protection system under percussion, and play prevent impact test block drop into ground and hurt the effect of personnel and equipment, in addition foundation ditch 5 also for various test model installation, dismounting provide operation field.Foundation ditch 5 is of a size of 20m × 37m.Carry out deep-cutting of local to bottom the foundation ditch 5 often bearing rock-fall impact, form the protection hole 6 of inverted trapezoidal, to meet passive protection system under rock-fall impact effect, the needs of maximum distortion.
Impacting test block 3 is regular polyhedron, and it is the polyhedron that regular cube reams corner angle and obtain, and is highly 0.4m-2m, and weight is 0.25t-25t.For avoid impacting test block 3 with the impact process of guard system in destroy, impact test block external surface is formed by Plate Welding, inner configuration reinforcement, and concreting.For the ease of impact test block 3 rise winch to specified altitude assignment after can free-falling, special tripping gear can be adopted to impact test block 3 for discharging.Meanwhile, in the manufacturing process of impacting test block 3, can pre-buried crotch, for impacting lifting and the release of test block 3.
Described flexible protection systems test model 4 comprises protective screening 42 and pressure-reducing ring 44, and is vertically fixed on the steel column 41 of more than two or two of counter force wall 1 sustained height; Described protective screening 42 is fixed between two adjacent steel columns 41 by the supporting rope 45 being arranged on its surrounding; Described steel column 41 is connected with counter force wall 1 by anchor line 43 away from one end of counter force wall 1; Described pressure-reducing ring 44 is arranged on anchor line 43 and supporting rope 45.Steel column 41 is fixed on steel column pedestal 46 near one end of counter force wall 1, and steel column pedestal 46 and anchor line 43 are by being arranged on anchor pole in anchor hole and counter force wall 1 is fixed.
The operating principle of this test platform is: be installed on by flexible protection systems test model 4 on counter force wall 1, with lifting appliance 2, the impact test block 3 of constant weight is risen to certain height, utilize automatic releasing device that impact test block 3 is come off from suspension hook, impacting test block 3 movement of falling object is kinetic energy by potential energy converting and energy, with the passive flexible protection systems test model 4 of the energy impact designed.
Owing to adopting the mode of freely falling body, the design formulas of impact energy is as follows:
E=mg
H
In formula,
mfor impacting the quality of test block 3;
gfor acceleration of gravity;
hfor impacting the height of test block free-falling.Select the impact test block 3 of corresponding weight during test according to the impact energy of design, corresponding sling height is set.
Need the content of carrying out testing to be the distortion of flexible protection systems test model 4 and destruction situation under different-energy impacts in test, be specially: the 1) deformation of protective screening 42; 2) steel column 41 distortion or destroy situation; 3) supporting rope 45, anchor line 43 destroy situation; 4) pressure-reducing ring 44 is out of shape and destruction situation.
Video camera is adopted to carry out test model deformation measurement, each test needs use 3 video cameras, comprises 1 high-speed camera (being mainly used in recording distortion and the destruction situation of test model keypoint part) and 2 common camera (being mainly used in recording the bulk deformation of test model and overall destruction situation).In addition, anchor line 43 is also provided with pulling force sensor, is used for carrying out anchor line 43 measurement of stress and strain, pulling force sensor adopts the fiber grating pulling force sensor of 150kN.
Claims (7)
1. a flexible protection systems dynamic impact test platform, comprise the impact test block (3) for simulating falling rocks, for promoting and discharging the lifting appliance (2) and flexible protection systems test model (4) that impact test block (3), it is characterized in that, also comprise the counter force wall (1) for installing flexible protection systems test model (4), and provide recoil space for impact test and play the foundation ditch (5) of protective action; Described counter force wall (1) is vertically installed in the side of foundation ditch (5).
2. flexible protection systems dynamic impact test platform according to claim 1, it is characterized in that, described flexible protection systems test model (4) comprises protective screening (42) and pressure-reducing ring (44), and is vertically fixed on the steel column (41) of more than two or two of counter force wall (1) sustained height; Described protective screening (42) is fixed between two adjacent steel columns (41) by the supporting rope (45) being arranged on its surrounding; Described steel column (41) is connected with counter force wall (1) by anchor line (43) away from one end of counter force wall (1); Described pressure-reducing ring (44) is arranged on anchor line (43) and supporting rope (45).
3. flexible protection systems dynamic impact test platform according to claim 2, it is characterized in that, described counter force wall (1) is provided with the equally distributed anchor hole running through counter force wall (1), described steel column (41) is fixed on steel column pedestal (46) near one end of counter force wall (1), described steel column pedestal (46) and anchor line (43) by be arranged on anchor pole in anchor hole and counter force wall (1) fixing.
4. flexible protection systems dynamic impact test platform according to claim 2, is characterized in that, (43) are also provided with pulling force sensor with described anchor line.
5. flexible protection systems dynamic impact test platform according to claim 1, is characterized in that, described impact test block (3) is regular polyhedron, and it is highly 0.4m-2m, and weight is 0.25t-25t.
6. flexible protection systems dynamic impact test platform according to claim 1, is characterized in that, described foundation ditch (5) bottom is also provided with protection hole (6) of inverted trapezoidal.
7. the flexible protection systems dynamic impact test platform according to claim 1-6, is characterized in that, described lifting appliance (2) adopts moveable straddle truck.
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| CN201510601460.4A CN105133672B (en) | 2015-09-18 | 2015-09-18 | Dynamic impact test platform for flexible protection system |
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| CN201510601460.4A CN105133672B (en) | 2015-09-18 | 2015-09-18 | Dynamic impact test platform for flexible protection system |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109186916A (en) * | 2018-09-14 | 2019-01-11 | 西南交通大学 | A kind of large-scale synthesis platform can be used for a variety of flexible protective structure full size impact tests |
| CN109269754A (en) * | 2018-11-06 | 2019-01-25 | 西南交通大学 | A kind of cartridge type guiding orientation percussion mechanism and test method for sinker dynamic test in falling rocks intercepting system |
| CN109506870A (en) * | 2018-11-06 | 2019-03-22 | 西南交通大学 | A kind of cable type guiding orientation percussion mechanism for rock-fall protection system sinker dynamic test |
| CN109736214A (en) * | 2019-01-03 | 2019-05-10 | 西南交通大学 | A method of passive soft protecting net is installed on experimental site counter force wall |
| CN110196147A (en) * | 2019-05-21 | 2019-09-03 | 西南交通大学 | A kind of multidimensional multidirectional and multifunctional joint shock table |
| CN111639384A (en) * | 2020-06-09 | 2020-09-08 | 四川大学 | Landslide and rockfall protection design method based on three-dimensional laser scanning |
| CN112924129A (en) * | 2021-03-16 | 2021-06-08 | 中铁西北科学研究院有限公司 | Multi-dimensional large-scale simulation test equipment for impact response of high-order dangerous rock protective structure |
| CN114878130A (en) * | 2022-07-08 | 2022-08-09 | 西南交通大学 | Informationized ground disaster power protection comprehensive test platform |
| WO2023236897A1 (en) * | 2022-06-07 | 2023-12-14 | 西南交通大学 | Non-contact visual monitoring system and method for flexible protection structure against rockfall disasters |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109186916A (en) * | 2018-09-14 | 2019-01-11 | 西南交通大学 | A kind of large-scale synthesis platform can be used for a variety of flexible protective structure full size impact tests |
| CN109269754B (en) * | 2018-11-06 | 2020-08-04 | 西南交通大学 | Cylinder type guiding directional impact device and method for energy dissipater power test in rockfall interception system |
| CN109269754A (en) * | 2018-11-06 | 2019-01-25 | 西南交通大学 | A kind of cartridge type guiding orientation percussion mechanism and test method for sinker dynamic test in falling rocks intercepting system |
| CN109506870A (en) * | 2018-11-06 | 2019-03-22 | 西南交通大学 | A kind of cable type guiding orientation percussion mechanism for rock-fall protection system sinker dynamic test |
| CN109506870B (en) * | 2018-11-06 | 2020-08-04 | 西南交通大学 | Rope type guiding directional impact device for dynamic test of energy dissipater of rockfall protection system |
| CN109736214A (en) * | 2019-01-03 | 2019-05-10 | 西南交通大学 | A method of passive soft protecting net is installed on experimental site counter force wall |
| CN110196147A (en) * | 2019-05-21 | 2019-09-03 | 西南交通大学 | A kind of multidimensional multidirectional and multifunctional joint shock table |
| CN111639384A (en) * | 2020-06-09 | 2020-09-08 | 四川大学 | Landslide and rockfall protection design method based on three-dimensional laser scanning |
| CN112924129A (en) * | 2021-03-16 | 2021-06-08 | 中铁西北科学研究院有限公司 | Multi-dimensional large-scale simulation test equipment for impact response of high-order dangerous rock protective structure |
| CN112924129B (en) * | 2021-03-16 | 2023-08-01 | 中铁西北科学研究院有限公司 | Impact response multi-dimensional large-scale simulation test equipment for high-order dangerous rock body protection structure |
| WO2023236897A1 (en) * | 2022-06-07 | 2023-12-14 | 西南交通大学 | Non-contact visual monitoring system and method for flexible protection structure against rockfall disasters |
| CN114878130A (en) * | 2022-07-08 | 2022-08-09 | 西南交通大学 | Informationized ground disaster power protection comprehensive test platform |
| CN114878130B (en) * | 2022-07-08 | 2022-10-11 | 西南交通大学 | Informatization ground disaster power protection comprehensive test platform |
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