CN207866684U - A kind of device measuring loess-concrete surface friction coefficient - Google Patents
A kind of device measuring loess-concrete surface friction coefficient Download PDFInfo
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- CN207866684U CN207866684U CN201820314784.9U CN201820314784U CN207866684U CN 207866684 U CN207866684 U CN 207866684U CN 201820314784 U CN201820314784 U CN 201820314784U CN 207866684 U CN207866684 U CN 207866684U
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- loess
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Abstract
The utility model discloses a kind of devices measuring loess concrete surface friction coefficient, including outer framework, Sheng soil container of the tool there are two being oppositely arranged and for placing loess test block to be determined in outer framework, concrete test block to be determined is clamped between the native container of two Shengs and is contacted with loess test block face to be determined, the native container of the Sheng is slidably arranged in outer framework, it is equipped on the outer framework for driving the adjusting screw rod for containing native container sliding, locking nut is installed on the adjusting screw rod, one end of the adjusting screw rod is equipped with pressure sensor, the measurement end of the pressure sensor is connected in the native container of the Sheng.The utility model has filled up the blank of current measurement loess concrete surface friction coefficient device, can accurately obtain the friction coefficient of loess concrete surface, reasonable design, highly practical.
Description
Technical field
The utility model belongs to technical field of civil engineering, and in particular to a kind of measurement loess-concrete surface friction
The device of coefficient.
Background technology
As what western China Urban Underground Space Excavation utilized accelerates development, Canal in Loess Area subway engineering increasingly increases
It is more.Loess has prismatical joint, the weak cementing special construction of macrovoid and the specific sensibility to water so that in Canal in Loess Area
There are higher eaerthquake damage risks when building subway engineering.The earthquake research of subway station under the conditions of carrying out Loess Site
When, the analysis of subway station earthquake response rule and destructive characteristics can be carried out by numerical simulation software, since subway station is buried
Be placed in Loess Site, in the earthquake response numerical simulation of subway station, be considered as under geological process loess and subway station it
Between the dynamic interactions problem such as strong collision, friction, it includes that loess and concrete surface friction coefficient exist to need input
Interior contact performance parameter.At present in measuring friction coefficient, filled for the measurement of loess and concrete surface friction coefficient
It sets and belongs to blank with assay method.
When simulating the dynamic interaction of loess-subway station using the Soil-structure Interaction Model of ABAQUS softwares, using penalizing letter
Normal direction closure and separation mechanism, are tangentially rubbed based on bonding-slip Theory simulating contact between face between number Penal ty simulating contacts face
Wiping and slip mechanism.For this purpose, design measures the device of loess and concrete surface friction coefficient, to yellow under different contact conditions
The changing rule of soil-concrete surface friction coefficient carries out system research, is connect for Loess Site-subway station under different operating modes
The friction coefficient value of contacting surface model provides reliable basis, while having laid niche for the research of subway station eaerthquake damage mechanism
Plinth.
Utility model content
The technical problem to be solved by the utility model is to the deficiencies in for the above-mentioned prior art, provide a kind of measurement
The device of loess-concrete surface friction coefficient.The device by by concrete test block to be determined be clamped in two it is to be determined
Between loess test block, underground loess is simulated to subway to the extruding of concrete test block to be determined using loess test block to be determined
Stand concrete effect to measure the friction coefficient of loess-concrete surface, and drive loess to be determined using adjusting screw rod
Test block acts on normal pressure to concrete test block to be determined, and pressure sensor acquires applied positive pressure value, not only operates in real time
Simplicity can also adjust the value of normal pressure in time according to actual demand, meanwhile, the Sheng soil for placing loess test block to be determined holds
Tool is slidably mounted in outer framework, is convenient for extruding of the loess test block to be determined to concrete test block to be determined.
In order to solve the above technical problems, the technical solution adopted in the utility model is a kind of measurement loess-concrete contact
The device of face friction coefficient, it is characterised in that：Including outer framework, there are two be oppositely arranged and be used to place to be measured for tool in outer framework
Determine the Sheng soil container of loess test block, concrete test block to be determined be clamped between the native containers of two Shengs and with loess to be determined
Test block face contacts, and the native container of the Sheng is slidably arranged in outer framework, is equipped on the outer framework for driving the Sheng soil
The adjusting screw rod of container sliding, is equipped with locking nut on the adjusting screw rod, one end of the adjusting screw rod is equipped with pressure
The measurement end of sensor, the pressure sensor is connected in the native container of the Sheng.
A kind of above-mentioned device measuring loess-concrete surface friction coefficient, it is characterised in that：It is set in the outer framework
It is equipped with slideway, the slideway, which has, places the ladder platform for containing native container, and sliding block, the cunning are provided in the native container of the Sheng
Block has and the matched convex edge of ladder platform.
A kind of above-mentioned device measuring loess-concrete surface friction coefficient, it is characterised in that：The adjusting screw rod
One end is mounted on by support plate on the pressure sensor, and the center of the support plate is offered to be passed through for adjusting screw rod
Top hole.
A kind of above-mentioned device measuring loess-concrete surface friction coefficient, it is characterised in that：The coagulation to be determined
Load cushion block is placed in native test block.
A kind of above-mentioned device measuring loess-concrete surface friction coefficient, it is characterised in that：The outer framework by according to
Four pieces of mounting plates of secondary connection form.
The utility model has the following advantages compared with prior art：
1. the apparatus structure for measurements loess-concrete surface friction coefficient that the utility model uses simply, convenient for making
With, between concrete test block to be determined is clamped in two loess test blocks to be determined, using rotation adjusting screw rod drive wait for
It measures loess test block to squeeze concrete test block to be determined, to generate normal pressure, root on loess-concrete surface
The Sheng soil container for placing loess test block to be determined is devised according to the frangible disadvantage of loess test block to be determined, concrete can be direct
It is clamped between two loess test blocks to be determined, in this way on the basis of ensureing device usability, simplifies apparatus structure, reduces
The weight of whole device.
2. the device for measurement loess-concrete surface friction coefficient that the utility model uses is driven by adjusting screw rod
Loess test block movement to be determined, and locking nut can also position postrotational adjusting screw rod, and adjusting screw rod is avoided to exist
Axially play when specifically used, to influence the normal use of whole device.
3. two of the utility model are contained native container and are slidably mounted in outer framework, thus can be to be determined according to requiring to make
Loess test block squeezes concrete test block to be determined, and simulation is answered with being located at the different level that the soil body is born at different depth
Power improves the practicability of whole device.
In conclusion the device of measurement loess-concrete surface friction coefficient of the utility model design will be by that will wait for
It measures concrete test block to be clamped between two loess test blocks to be determined, concrete to be determined is tried using loess test block to be determined
The extruding of block measures the friction system of loess-concrete surface to simulate underground loess to the effect of subway station concrete
Number, and drive loess test block to be determined to act on normal pressure to concrete test block to be determined using adjusting screw rod, pressure sensor is real
When acquire applied positive pressure value, it is not only easy to operate, can also adjust the value of normal pressure in time according to actual demand, together
When, the Sheng soil container for placing loess test block to be determined is slidably mounted in outer framework, is treated convenient for loess test block to be determined
Measure the extruding of concrete test block.
Below by drawings and examples, the technical solution of the utility model is described in further detail.
Description of the drawings
Fig. 1 is the structural schematic diagram for the device that the utility model measures loess-concrete surface friction coefficient.
Fig. 2 is the A-A sectional views of Fig. 1.
Fig. 3 is the B-B sectional views of Fig. 1.
Fig. 4 is the structural schematic diagram of the utility model support plate.
Reference sign:
1-outer framework；2-slideways；2-1-ladder platform；
3-1-first contains native container；3-2-second contains native container；4-sliding blocks；
4-1-convex edge；5-loess test blocks to be determined；6-concrete test blocks to be determined；
7-load cushion blocks；8-1-first pressure sensor；8-2-second pressure sensor；
9-adjusting screw rods；10-locking nuts；11-support plates；
11-1-connecting hole；11-2-top hole；12-connectors.
Specific implementation mode
As shown in Figures 1 to 4, a kind of dress measuring loess-concrete surface friction coefficient described in the utility model
It sets, including outer framework 1, Sheng soil container of the tool there are two being oppositely arranged and for placing loess test block 5 to be determined in outer framework 1,
Concrete test block 6 to be determined is clamped between the native container of two Shengs and is contacted with 5 face of loess test block to be determined, the Sheng soil
Container is slidably arranged in outer framework 1, is equipped on the outer framework 1 for driving the adjusting screw rod for containing native container sliding
9, locking nut 10 is installed on the adjusting screw rod 9, one end of the adjusting screw rod 9 is equipped with pressure sensor, the pressure
The measurement end of force snesor is connected in the native container of the Sheng.
When it is implemented, concrete test block 6 to be determined is clamped in two Sheng soil containers for being placed with loess test block 5 to be determined
Between, and concrete test block to be determined 6 and 5 straight surfaces brought into contact of loess test block to be determined, to concrete test block 6 to be determined with wait for
Frictional force is will produce between measurement loess test block 5.Because loess has porosity, vertical joints development, stratification unobvious, permeable
Property stronger and larger collapsibility, so loess test block 5 to be determined is placed in the native container of the Sheng, and then avoid to be measured
Determine loess test block 5 and loose phenomenon is occurring when specific operation, influences being normally carried out for follow-up test, but concrete has resistance
Pressure is drawn, ability that is curved, cutting iso-stress, and has larger intensity, to which concrete test block 6 to be determined is not using for placing
The concrete frame of concrete test block 6 to be determined is clamped directly between the native container of two Shengs.The benefit designed in this way is：Letter
The structure for having changed whole device, alleviates weight, improves the portability of whole device, while also simplifying operation.
When specific measurement loess-concrete surface friction coefficient, need to apply positive pressure to loess-concrete surface
Power, which drives the native container of the Sheng to be moved towards 6 direction of concrete test block to be determined by adjusting screw rod 9, in loess-
Normal pressure is generated between concrete surface.Positive pressure is generated by being rotated between loess-concrete surface for adjusting screw rod 9
Power, it is not only easy to operate, and the size of positive pressure value can be adjusted in time according to actual demand.When it is implemented, mounted on adjusting
Locking nut 10 on section screw rod 9 can be locked to the adjusting screw rod 9 after application normal pressure, and adjusting screw rod 9 is avoided to produce
Raw shaking phenomenon, and then the positive pressure value between loess-concrete surface is influenced, simultaneously as two loess examinations to be determined
Block 5 is symmetricly set on 6 both sides of concrete test block to be determined, and fixation of the locking nut 10 to adjusting screw rod 9 also can avoid another
Adjusting screw rod 9 influences caused by when applying normal pressure.Preferably, the adjusting screw rod 9 is located inside outer framework 1 and is also equipped with
Locking nut 10.
In the present embodiment, the pressure sensor is fixed on the end of adjusting screw rod 9, when adjusting screw rod 9 is mixed towards to be determined
When the movement of 6 direction of solidifying soil test block, the pressure sensor is also moved towards 6 direction of concrete test block to be determined therewith, due to pressure
The measurement end of sensor, which is mounted on, contains in native container, and such pressure sensor can detect loess test block 5 to be determined in real time
To the normal pressure of concrete test block 6 to be determined.
In the present embodiment, the native container of the Sheng is slidably arranged in outer framework 1, is convenient for 5 court of loess test block to be determined in this way
6 direction of concrete test block movement to be determined generates normal pressure in loess-concrete surface.
In the present embodiment, the native container of the Sheng includes first containing soil container 3-1 and second and containing soil container 3-2, and described first
The side opposite native container 3-2 of the Shengs of Sheng soil container 3-1 and second is unclosed, and the pressure sensor includes measurement end and first
The first pressure sensor 8-1 and measurement end for containing native container 3-1 connections are sensed with the second Sheng soil container 3-2 second pressures connecting
Device 8-2, the first pressure sensor 8-1 are mixed for detecting loess test block 5 to be determined in the native container 3-1 of the first Sheng to be determined
The normal pressure that solidifying soil test block 6 acts on, the second pressure sensor 8-2 contain Huang to be determined in native container 3-2 for detecting second
The normal pressure that native test block 5 acts on concrete test block 6 to be determined.
As shown in Fig. 2, in the present embodiment, slideway 2 is provided in the outer framework 1, the slideway 2, which has, places the Sheng
The ladder platform 2-1 of native container is provided with sliding block 4 in the native container of the Sheng, and the sliding block 4 has matched with ladder platform 2-1
Convex edge 4-1.The convex edge 4-1 is arranged on ladder platform 2-1, and the advantages of setting in this way is：When needing to remove the native container of the Sheng
When, it need to will only contain native container and be promoted along the short transverse of outer framework 1, reduce the removal difficulty for containing native container；When Sheng soil
When container needs are moved towards 6 direction of concrete test block to be determined, the convex edge 4-1 being arranged in native container that contains is along ladder platform 2-
1 extending direction sliding, it is final to drive the Sheng soil container movement for being placed with loess test block 5 to be determined.
As shown in Figure 1 and Figure 4, in the present embodiment, one end of the adjusting screw rod 9 is mounted on the pressure by support plate 11
On force snesor, the center of the support plate 11 offers the top hole 11-2 passed through for adjusting screw rod 9, the support plate
The connecting hole 11-1 passed through for connector 12 is further opened on 11.When specifically used, the support plate 11 can by connector 12
Dismounting is mounted on the pressure sensor, and the end of the adjusting screw rod 9 is mounted in the top hole 11-2 of support plate 11, is adopted
Adjusting screw rod 9 can be effectively prevent directly and pressure sensor contacts, to make paired pressure biography during rotation with support plate 11
The destruction of sensor, or even cause stress the phenomenon that sensor gathered data fails.
As shown in figures 1 and 3, load cushion block 7 is placed on the concrete test block to be determined 6.It is reached using load cushion block 7
To have the technical effect that:When carrying out load vertical pressure to concrete test block 6 to be determined using electronic universal tester, electronics ten thousand
Energy testing machine acts directly on load cushion block 7, without being in direct contact with concrete test block 6 to be determined, increases electronics in this way
The active area of universal testing machine and concrete test block 6 to be determined prevents from making since active area is small when loading vertical pressure
Destruction and the discontinuity of pairs of concrete test block 6 to be determined and cause concrete test block 6 to be determined to rotate, while also simplifying
The requirement of the geometric center of concrete test block 6 to be determined and the centering operation of electronic universal tester load end.
In the present embodiment, the outer framework 1 is made of sequentially connected four pieces of mounting plates, and the mounting plate is steel plate, is adopted
It is the operating space for providing larger when practical operation with the unclosed outer framework 1 in upper surface and lower face, and facilitates to be determined
Concrete test block 6 taking and removing.
In the present embodiment, it is square structure that the first Sheng soil container 3-1 and second, which contains soil container 3-2, and by five
Block steel plate forms, and the first Sheng soil container 3-1 and second contains the opposite sides native container 3-2 and steel plate is not arranged, promotes so to be measured
Determine loess test block 5 and 6 straight surfaces brought into contact of concrete test block to be determined.
Include following step using the method that the utility model is measured the friction coefficient of loess-concrete surface
Suddenly：
Step 1: getting parms：The loess and concrete at the subway station that buried depth depth is H are acquired, is obtained to be determined
Then loess test block 5 and concrete test block to be determined 6 obtain the moisture content ω and coefficient of collapsibility σ of loess test block 5 to be determineds, survey
The construction depth h of fixed concrete test block 6 to be determined, passes through formula σH=K × γ × H, it is the to be measured of H to calculate residing buried depth depth
Determine the horizontal crustal stress σ of loess test block 5H；Wherein, K is that flatly stress coefficient, γ are soil body severe.
Influence loess-concrete surface friction coefficient because being known as：Major influence factors are to wait for from the aspect of loess
Measure the coefficient of collapsibility σ of the moisture content ω and loess test block 5 to be determined of loess test block 5s；It is mainly influenced from the aspect of concrete
Factor is the construction depth h of concrete test block 6 to be determined.It is also needed to when studying loess-concrete surface friction coefficient to be measured
Determine the horizontal crustal stress σ of loess test block 5H, friction is measured using the device for measuring loess-concrete surface friction coefficient
When coefficient, first have to obtain above-mentioned parameter, the specific acquisition methods of above-mentioned parameter are：
Obtain the moisture content ω of loess test block 5 to be determined：Loess test block 5 to be determined is directly measured using tester for water ratio
Moisture content ω.
Obtain the coefficient of collapsibility σ of loess test block 5 to be determineds：It makes and 5 mass of loess test block to be determined, volume all same
Loess sample, pressurizeed, soaked to the loess sample, obtain the coefficient of collapsibility of loess sample to get to Huang to be determined
The coefficient of collapsibility σ of native test block 5s, specific formula for calculation σs=(hp-h′p)/ho, wherein：hpNative state is kept for loess sample
When, the height after pressurization sinking is stable, h 'pAfter stablizing for the pressurization of above-mentioned loess sample under water effect, after sinking to stablizing
Highly, h0For the original height of loess sample.
Measure the construction depth h of concrete test block 6：Concrete to be determined is directly measured using pavement structural depth analyzer
The construction depth h of test block 6.
Prepare Step 2: measuring：Prepare N groups and measure test block, it includes two loess examinations to be tested that test block is measured described in every group
Block 5 and a concrete test block 6 to be tested, wherein N >=3.
The measurement that loess-concrete surface friction coefficient is carried out using at least three groups of measurement test blocks, more can guarantee test
The accuracy of data.
Step 3: fixed measure test block and apply load：Loess test block 5 to be determined is fixed in the native container of the Sheng,
Then between concrete test block 6 to be determined being clamped in two loess test blocks 5 to be determined, then to concrete test block 6 to be determined plus
It carries normal pressure and vertical pressure, specific operation process is as follows：
Step 301 weighs the quality m that concrete test block 6 to be determined in test block is measured described in i-th groupi；Further according to formula Fi
=σH×Si, calculate normal pressure F of the loess test block 5 to be determined to concrete test block 6 to be determinedi；Wherein, SiTo be surveyed described in i-th group
Determine the area of 6 clamping face of concrete test block to be determined in test block.
Loess test block 5 to be determined is fixed in the native container of the Sheng by step 302；Concrete test block 6 to be determined is pressed from both sides again
It holds between two loess test blocks 5 to be determined, the clamping face of concrete test block 6 to be determined is made to be contacted with loess test block 5 to be determined,
The top surface of concrete test block 6 to be determined is in horizontality.
Hold when it is implemented, two pieces of loess test blocks 5 to be determined are individually positioned in the first Sheng soil container 3-1 and second and contain soil
Have in 3-2, then the first Sheng soil container 3-1 for being placed with loess test block 5 to be determined and the second Sheng soil container 3-2 are slided into peace respectively
In outer framework 1.
When it is implemented, between concrete test block 6 to be determined is clamped in two loess test blocks 5 to be determined, and need to protect
The clamping face for demonstrate,proving concrete test block 6 to be determined is in contact with loess test block 5 to be determined completely, while needing to ensure coagulation to be determined
The top surface of native test block 6 is in horizontality, the purpose for the arrangement is that：The top surface of concrete test block 6 to be determined is in horizontality,
When can just make subsequently to carry out vertical pressure, ensure concrete test block 6 to be determined with it is vertical on 5 contact surface of loess test block to be determined
Pressure downwards, could ensure the accuracy of friction coefficient in this way, if the top surface of concrete test block to be determined 6 is in skewed
State, then concrete test block to be determined 6 will not be parallel to contact surface with the vertical pressure on 5 contact surface of loess test block to be determined, this
Sample will reduce the accuracy of PVvalue testing.
Step 303, rotation adjusting screw rod 9 make two loess test blocks 5 to be determined squeeze concrete test block 6 to be determined, until
The pressure value that the pressure sensor is shown and the loess test block 5 to be determined being calculated in step 301 are to concrete to be determined
The normal pressure F of test block 6iIt is equal, the vertical loading velocity β of electronic universal tester, electronics are set on electronic universal tester
Universal testing machine vertically applies vertical pressure to concrete test block 6 to be determined, until what electronic universal tester was shown
When the displacement-load curves of concrete test block 6 to be determined reach horizontality, record electronic universal tester is to coagulation to be determined
The vertical pressure F of native test block 6i′；Finally remove the loess test block 5 to be determined and concrete test block to be determined 6.
When it is implemented, the acquisition methods of the vertical loading velocity β of electronic universal tester are：In numerical analysis software
In establish loess and subway station dynamic interaction numerical model, and in the model bottom input-to-state stabilization, numerical analysis
Software exports to obtain loess and the relative sliding velocity α of subway station vertically, and the electronic universal tester vertically adds
It is equal with the relative sliding velocity α of subway station vertically with the loess to carry speed β.When loading vertical pressure, if
Fixed vertical loading velocity β is equal to α, that is, makes the sliding speed between loess test block 5 to be determined and concrete test block to be determined 6
It is equal with the lower relative sliding velocity between loess and subway station of actual seismic effect, so more can it is true, accurately reflect ground
When loess is with subway station dynamic interaction during shake, the sliding mechanism between loess and subway station and frictional behavior,
The numerical analysis software used by usually is ABAQUS, ANSYS or DIANA etc..
When loading vertical pressure, when the displacement-load curves for the concrete test block to be determined 6 that electronic universal tester is shown
It when reaching horizontality, can be shown that concrete test block 6 to be determined is in equilibrium state in vertical direction, just can record electronics at this time
Vertical pressure F of the universal testing machine to concrete test block 6 to be determinedi', it is m to obtain qualityiConcrete test block to be determined 6 applying
It is F to add normal pressureiWhen, the vertical pressure loaded is Fi′。
Step 304 repeats step 301 to step 303, until completing the N groups measurement for measuring test block, obtains the survey of N groups
Data are measured, N group measurement data includes quality, normal pressure and the vertical pressure of N groups concrete test block 6 to be determined；
It is m to qualityiConcrete test block to be determined 6 measure after, concrete test block 6 to be determined is due to normal pressure FiWith it is perpendicular
To pressure Fi' load, will appear soil body obscission, concrete test block 6 to be determined on the clamping face of loess test block 5 to be determined
It will appear the recess on contact surface, pit slot and hole etc. and phenomenon crammed by the soil body, and then loess test block 5 to be determined can be reduced and waited for
The contact surface quality of concrete test block 6 is measured, so needing the concrete test block to be determined 6 of abrasion and loess test block to be determined
5 remove, and concrete test block 6 to be determined and loess test block 5 to be determined is separately taken to be measured.
Step 4: calculating loess-concrete surface friction coefficient：According to formulaIt is calculated and waits for
Measure the friction coefficient μ of loess test block 5 and 6 contact surface of concrete test block to be determined, wherein g is acceleration of gravity.
When specific test, since concrete test block 6 to be determined and loess test block 5 to be determined tool are there are two clamping face, two
Direction on clamping face with the glide direction of concrete test block 6 to be determined on the contrary, i.e. direction upward, institute
To be obtained according to the forst law of motion：2Fiμ=Fi′+miG, then
The above is only the preferred embodiment of the utility model, not imposed any restrictions to the utility model, every
Any simple modification, change and equivalent structure made by above example are changed according to the utility model technical spirit, still
Belong in the protection domain of technical solutions of the utility model.
Claims (5)
1. a kind of device measuring loess-concrete surface friction coefficient, it is characterised in that：Including outer framework (1), outer framework
(1) Sheng soil container of the tool there are two being oppositely arranged and for placing loess test block (5) to be determined, concrete test block to be determined in
(6) it is clamped between the native container of two Shengs and is contacted with loess test block (5) face to be determined, the native container sliding setting of the Sheng
In outer framework (1), it is equipped on the outer framework (1) for driving the adjusting screw rod (9) for containing native container sliding, it is described
Locking nut (10) is installed, one end of the adjusting screw rod (9) is equipped with pressure sensor, the pressure on adjusting screw rod (9)
The measurement end of force snesor is connected in the native container of the Sheng.
2. a kind of device measuring loess-concrete surface friction coefficient according to claim 1, it is characterised in that：
Slideway (2) is provided in the outer framework (1), the slideway (2), which has, places the ladder platform (2-1) for containing native container, institute
It states and is provided with sliding block (4) in the native container of Sheng, the sliding block (4) has and the matched convex edge (4-1) ladder platform (2-1).
3. a kind of device measuring loess-concrete surface friction coefficient according to claim 1, it is characterised in that：
One end of the adjusting screw rod (9) is mounted on by support plate (11) on the pressure sensor, in the support plate (11)
Heart position offers the top hole (11-2) passed through for adjusting screw rod (9).
4. a kind of device measuring loess-concrete surface friction coefficient according to claim 1, it is characterised in that：
Load cushion block (7) is placed on the concrete test block to be determined (6).
5. a kind of device measuring loess-concrete surface friction coefficient according to claim 1, it is characterised in that：
The outer framework (1) is made of sequentially connected four pieces of mounting plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820314784.9U CN207866684U (en) | 2018-03-07 | 2018-03-07 | A kind of device measuring loess-concrete surface friction coefficient |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820314784.9U CN207866684U (en) | 2018-03-07 | 2018-03-07 | A kind of device measuring loess-concrete surface friction coefficient |
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| Publication Number | Publication Date |
|---|---|
| CN207866684U true CN207866684U (en) | 2018-09-14 |
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ID=63456207
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820314784.9U Expired - Fee Related CN207866684U (en) | 2018-03-07 | 2018-03-07 | A kind of device measuring loess-concrete surface friction coefficient |
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| CN (1) | CN207866684U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108132212A (en) * | 2018-03-07 | 2018-06-08 | 长安大学 | A kind of device and assay method for measuring loess-concrete surface friction coefficient |
| CN110146441A (en) * | 2019-06-14 | 2019-08-20 | 辽宁工程技术大学 | For measuring the experimental rig of the dynamic friction coefficient of concrete structure and the soil body |
-
2018
- 2018-03-07 CN CN201820314784.9U patent/CN207866684U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108132212A (en) * | 2018-03-07 | 2018-06-08 | 长安大学 | A kind of device and assay method for measuring loess-concrete surface friction coefficient |
| CN110146441A (en) * | 2019-06-14 | 2019-08-20 | 辽宁工程技术大学 | For measuring the experimental rig of the dynamic friction coefficient of concrete structure and the soil body |
| CN110146441B (en) * | 2019-06-14 | 2021-07-27 | 辽宁工程技术大学 | Test device for measuring dynamic friction coefficient of concrete structure and soil body |
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