CN106759216B - A kind of penetrometer and its measurement method having both dynamic sounding and static sounding - Google Patents
A kind of penetrometer and its measurement method having both dynamic sounding and static sounding Download PDFInfo
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- CN106759216B CN106759216B CN201611122044.7A CN201611122044A CN106759216B CN 106759216 B CN106759216 B CN 106759216B CN 201611122044 A CN201611122044 A CN 201611122044A CN 106759216 B CN106759216 B CN 106759216B
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- feeler lever
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D1/00—Investigation of foundation soil in situ
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Soil Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of penetrometers having both dynamic sounding and static sounding, including outer feeler lever, interior feeler lever, bridge box, data collecting instrument, computer, the outer feeler lever is wrapped on the outside of interior feeler lever, and it is contacted with the outer wall slidingtype of interior feeler lever, and there is the interior feeler lever epitaxial part not wrapped up by outer feeler lever in interior feeler lever upper end, there are one miniature cones for the bottom end setting of interior feeler lever, and miniature cone includes the friction cylinder being connect with interior feeler lever bottom end, the side friction force snesor being set on the inside of friction cylinder, the cone sensor for being set to friction cylinder bottom end；The side friction force snesor, static point resistance sensor are connect by cable with bridge box, and bridge box is connect with data collecting instrument, and data collecting instrument is connect with computer.The present invention solves the problems such as traditional railway track structure safe design test equipment is heavy, and disturbance is big, and required complementary conditions are difficult, and test is inaccurate.
Description
Technical field
The present invention relates to a kind of dynamic soundings that has both for railroad track path partition soil body mechanical characteristic to be touched with static(al)
The novel penetrometer visited, belongs to one kind in geotechnical engineering railway bed testing field and has both power and static sounding device.
Background technology
Railway transportation becomes the mainstream in communications and transportation future, railway transportation with advantages such as its safety, economy, broad covered areas
Technology also further accelerates development and promotes.Larger wheel load, lateral pressure, powerful tractive force and Braking is in tradition
Railway line on, this will cause the destruction of track structure, and serious damage is caused to passenger.So for railway track structure
Assessment be particularly important.
Some lossless detection methods are evaluated ballast layer, as applied Ground Penetrating Radar (GPR) although Ground Penetrating Radar
(GPR) it is cost effective, with seldom time in wide area, but the strength characteristics of railway track structure can not be commented
Valence.Light-duty drop hammer deflection meter (LFWD) and plate-bearing test (PBT) can be applied to railway track structure and carry out static and dynamic
Load test, but unique defect is when these methods are applied to roadbed, it is necessary to remove ballast layer.In-situ test is for example quiet
Power cone penetration test (CPT), lateral loading test (PMT), vane shear test (VST), standard penetration test (SPT) (SPT) etc. are big due to it
Diameter feeler lever and drive link cause great interference to railway track structure.
Invention content
The object of the present invention is to provide a kind of penetrometers having both dynamic sounding and static sounding, to solve traditional railway
The problems such as track structure safe design test equipment is heavy, and disturbance is big, and required complementary conditions are difficult, and test is inaccurate.
To achieve the above object, the technical solution adopted by the present invention is：
A kind of penetrometer having both dynamic sounding and static sounding, including the acquisition of outer feeler lever, interior feeler lever, bridge box, data
Instrument, computer, the outer feeler lever is wrapped on the outside of interior feeler lever, and is contacted with the outer wall slidingtype of interior feeler lever, and interior feeler lever upper end has
The interior feeler lever epitaxial part not wrapped up by outer feeler lever, there are one miniature cone, miniature cone includes and interior spy for the bottom end setting of interior feeler lever
The friction cylinder of bar bottom end connection, the side friction force snesor being set on the inside of friction cylinder, the cone for being set to friction cylinder bottom end
Sensor；The side friction force snesor, static point resistance sensor are connect by cable with bridge box, bridge box and data
Acquisition Instrument connects, and data collecting instrument is connect with computer.
The cross-sectional diameter of the miniature cone is 15mm-25mm.
The side friction force snesor, static point resistance sensor are connected by four stress gauges full-bridge.
It is a further object to provide a kind of based on the above-mentioned penetrometer for having both dynamic sounding and static sounding
Measurement method, technical solution is as follows：
A kind of measurement method based on the above-mentioned penetrometer for having both dynamic sounding and static sounding, includes the following steps：
The first step：One vertically-guided device is installed on the railway roadbed for the roadbed for needing to measure, for ensuring penetrometer
The verticality of inside and outside feeler lever；
Second step：The penetrometer is mounted among vertically-guided device, by the top for being connected to penetrometer of dropping hammer,
Carry out dynamic sounding process, outer feeler lever and the coupling of interior feeler lever, while injection railway roadbed；By blow counts and the record of depth of penetration come
Obtain dynamic driving index；
Third walks：After the complete railway roadbed bottom of dynamic sounding, it will drop hammer and removed with vertically-guided device, in interior feeler lever epitaxy part
Divide installation one injection shell, carries out static sounding process；
4th step：Interior feeler lever injection roadbed measures penetration resistance during static sounding.
In second step, dynamic driving drops hammer weight as 110-120N, height of drop 570-590mm.
In 4th step, interior feeler lever is with 1-2mm/s rates at the uniform velocity injection roadbed.
In 4th step, the penetration resistance measured includes the side friction power fs that side friction force snesor is tested, cone
The static point resistance qc that sharp resistive force sensor is tested.
Advantageous effect：The present invention solves traditional railway track structure safe design test equipment heaviness, and disturbance is big, institute
The problems such as complementary conditions are difficult, and test is inaccurate is needed, the novel penetrometer is simple in structure, quality control is good, and repeatability is high, tool
Have an original position, multi-functional, automation, it is quick the features such as, be suitable for the dynamic test in situ of the soil layer of various different geology, especially
Railroad track underground structure, can the various soil layers of in-situ test parameter, can fast and effeciently measure the work of railroad track roadbed
Journey mechanical characteristic provides strong testing tool for civil engineering exploration practices especially railway track structure.
Description of the drawings
Fig. 1 is the structural schematic diagram of the penetrometer of the present invention；
Fig. 2 is vertically-guided schematic device of dropping hammer；
Fig. 3 is dynamic sounding device schematic diagram；
Fig. 4 is installation injection housing apparatus schematic diagram before static sounding；
Fig. 5 is static sounding device schematic diagram；
In figure：1- cables, feeler lever epitaxial part in 2-, the outer feeler levers of 3-, feeler lever in 4-, the miniature cones of 5-, 6- side friction power
Sensor, 7- friction cylinders, 8- static point resistance sensors, 9- bridge boxs, 10- data collecting instruments, 11- computers, 12- vertically-guideds dress
It sets, 13- sleepers, 14- railway roadbeds, 15- roadbeds, 16- drops hammer, 17- injection shells, 18- counterforce devices.
Specific implementation mode
The present invention is further described below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of penetrometer having both dynamic sounding and static sounding of the present invention, including outer feeler lever 3, interior spy
Bar 4, bridge box 9, data collecting instrument 10, computer 11, outer feeler lever 3 is wrapped in 4 outside of interior feeler lever, and is slided with the outer wall of interior feeler lever 4
Dynamic formula contacts, and there is the interior feeler lever epitaxial part 2 not wrapped up by outer feeler lever 3 in 4 upper end of interior feeler lever, and the bottom end of interior feeler lever 4 is provided with
One miniature cone 5, miniature cone 5 include the friction cylinder 7 being connect with 4 bottom end of interior feeler lever, are set to the side friction of 7 inside of friction cylinder
Force snesor 6, the cone sensor 8 for being set to 7 bottom end of friction cylinder；The side friction force snesor 6, static point resistance sensor
8 are connect by cable 1 with bridge box 9, and bridge box 9 is connect with data collecting instrument 10, and data collecting instrument 10 is connect with computer 11.
Wherein, outer feeler lever 3 is used for dynamic driving railway roadbed, and miniature cone 5 is used for static(al) penetration sounding roadbed.Outer feeler lever and interior spy
When bar does not couple, the interior independent injection of feeler lever carries out static sounding, and injection rate is 1-2mm/s；Outer feeler lever and interior feeler lever coupling
When conjunction, outer feeler lever and the injection simultaneously of interior feeler lever carry out dynamic sounding.
The cross-sectional diameter of miniature cone 5 is 15mm-25mm.
Side friction force snesor 6 is for testing side friction power fs, and static point resistance sensor 8 is for testing static point resistance
Qc, they finally measure its value by cable connection to bridge box.Side friction force snesor 6, static point resistance sensor 8 are equal
It is tested by the connection of four stress gauges full-bridge.
Railway track structure is measured using above-mentioned penetrometer, is as follows：
A kind of measurement method based on the penetrometer for having both dynamic sounding and static sounding stated, includes the following steps：
The first step：One vertically-guided device 12 is installed on the railway roadbed for the roadbed for needing to measure, for ensuring penetrometer
Feeler lever verticality；As shown in Figure 2；
Second step：The penetrometer is mounted among vertically-guided device 12, the top for the 16 connection penetrometers that drop hammer
Portion carries out dynamic sounding process, as shown in figure 3, during this, outer feeler lever and the coupling of interior feeler lever, injection railway roadbed；Pass through blow counts
Dynamic driving index is obtained with the record of depth of penetration；
Wherein, dynamic driving drops hammer weight as 110-120N, height of drop 570-590mm；
Third walks：After the complete railway roadbed bottom of dynamic sounding, will drop hammer 16 removes with vertically-guided device 12, outside interior feeler lever
Prolong part 2 and an injection shell 17 is installed, injection shell 17 is installed on counterforce device 18, as shown in figure 4, carrying out static sounding mistake
Journey；
4th step：During static sounding, interior feeler lever measures injection with 1-2mm/s rates at the uniform velocity injection roadbed, such as Fig. 5
Resistance, including side friction power fs that side friction force snesor is tested, the cone that static point resistance sensor test obtains
Resistance qc.
The test device retains and improves the function of feeler inspection powered by conventional energy, makes it have the function of static sounding, can root
The adjusting use that dynamic sounding, static sounding are carried out according to soil layer, solves traditional railway track structure safe design tester
The problems such as device is heavy, and disturbance is big, and required complementary conditions are difficult, and test is inaccurate, the novel penetrometer is simple in structure, quality control
Well, repeatability is high, have it is in situ, multi-functional, automation, it is quick the features such as, be suitable for the original of the soil layer of various different geology
Position dynamic test, especially railroad track underground structure, can the various soil layers of in-situ test parameter, can fast and effeciently measure
The engineering mechanical properties of railroad track roadbed provide strong test for civil engineering exploration practices especially railway track structure
Tool.
The above is only a preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (7)
1. a kind of penetrometer having both dynamic sounding and static sounding, it is characterised in that：Including outer feeler lever (3), interior feeler lever (4),
Bridge box (9), data collecting instrument (10), computer (11), the outer feeler lever (3) are wrapped on the outside of interior feeler lever (4), and with interior feeler lever
(4) outer wall slidingtype contact, and there is the interior feeler lever epitaxial part (2) that do not wrapped up by outer feeler lever (3) in interior feeler lever (4) upper end, it is interior
The bottom end setting of feeler lever (4) there are one miniature cone (5), miniature cone (5) include the friction cylinder (7) being connect with interior feeler lever (4) bottom end,
The cone sensor (8) for being set to the side friction force snesor (6) on the inside of friction cylinder (7), being set to friction cylinder (7) bottom end；
The side friction force snesor (6), static point resistance sensor (8) are connect by cable (1) with bridge box (9), bridge box
(9) it is connect with data collecting instrument (10), data collecting instrument (10) is connect with computer (11).
2. the penetrometer according to claim 1 for having both dynamic sounding and static sounding, it is characterised in that：The miniature cone
(5) cross-sectional diameter is 15mm-25mm.
3. the penetrometer according to claim 1 for having both dynamic sounding and static sounding, it is characterised in that：The side wall rubs
Resistive force sensor (6), static point resistance sensor (8) are connected by four stress gauges full-bridge.
4. a kind of measurement method based on any penetrometers for having both dynamic sounding and static sounding of claim 1-3,
It is characterized in that：Include the following steps：
The first step：One vertically-guided device is installed on the railway roadbed for the roadbed for needing to measure, for ensuring inside and outside penetrometer
The verticality of feeler lever；
Second step：The penetrometer is mounted among vertically-guided device, the top for being connected to penetrometer of dropping hammer carries out
Dynamic sounding process, outer feeler lever and the coupling of interior feeler lever, while injection railway roadbed；It is obtained by blow counts and the record of depth of penetration
Dynamic driving index；
Third walks：After the complete railway roadbed bottom of dynamic sounding, it will drop hammer and removed with vertically-guided device, pacify in interior feeler lever epitaxial part
An injection shell is filled, static sounding process is carried out；
4th step：Interior feeler lever injection roadbed measures penetration resistance during static sounding.
5. measurement method according to claim 4, it is characterised in that：In second step, dynamic driving drops hammer weight as 110-
120N, height of drop 570-590mm.
6. measurement method according to claim 4, it is characterised in that：In 4th step, interior feeler lever with 1-2mm/s rates at the uniform velocity
Injection roadbed.
7. measurement method according to claim 4, it is characterised in that：In 4th step, the penetration resistance measured includes side wall
The side friction power fs that frictional resistance sensor test obtains, the static point resistance qc that static point resistance sensor test obtains.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611122044.7A CN106759216B (en) | 2016-12-08 | 2016-12-08 | A kind of penetrometer and its measurement method having both dynamic sounding and static sounding |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611122044.7A CN106759216B (en) | 2016-12-08 | 2016-12-08 | A kind of penetrometer and its measurement method having both dynamic sounding and static sounding |
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| CN106759216A CN106759216A (en) | 2017-05-31 |
| CN106759216B true CN106759216B (en) | 2018-08-17 |
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Cited By (1)
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| CN110196211A (en) * | 2019-06-10 | 2019-09-03 | 中国海洋大学 | A kind of rate related coefficient measuring method for free-falling formula penetration technology |
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| CN107907597B (en) * | 2017-11-27 | 2024-03-15 | 山东大学 | Device and method for testing water content of penetrating ultrasonic soil body |
| CN109799144B (en) * | 2019-03-08 | 2022-09-02 | 曹增国 | Rock-soil layer in-situ lateral pressure testing device and method |
| CN109839317B (en) * | 2019-03-13 | 2020-08-14 | 大连理工大学 | Miniature indoor static sounding test system and method |
| CN111766364A (en) * | 2019-04-02 | 2020-10-13 | 中国地震局工程力学研究所 | Hidden sensor for in-situ experiment and embedding method thereof |
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| CN115928689B (en) * | 2023-01-18 | 2024-06-04 | 中国科学院力学研究所 | Free falling body type dynamic sounding instrument |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2976669B1 (en) * | 2011-06-16 | 2014-08-29 | Hydro Geotechnique | DEVICE FOR MEASURING RESISTANCE TO PENETRATION OF A SOIL |
| CN202247832U (en) * | 2011-09-05 | 2012-05-30 | 中铁第四勘察设计院集团有限公司 | Portable sounding machine |
| JP6238137B2 (en) * | 2014-06-27 | 2017-11-29 | 応用地質株式会社 | Ground survey method |
| CN104480926A (en) * | 2014-11-18 | 2015-04-01 | 天津市职业大学 | Novel penetration sounding device and method |
| CN106049398B (en) * | 2016-07-29 | 2018-03-27 | 广州中勘工程科技有限公司 | A kind of static sounding perforation device with sleeve pipe function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110196211A (en) * | 2019-06-10 | 2019-09-03 | 中国海洋大学 | A kind of rate related coefficient measuring method for free-falling formula penetration technology |
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