CN105804126B - Method for arranging microsensors on surface of simulated pile-soil interface shear concrete sample - Google Patents
Method for arranging microsensors on surface of simulated pile-soil interface shear concrete sample Download PDFInfo
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- CN105804126B CN105804126B CN201610156048.0A CN201610156048A CN105804126B CN 105804126 B CN105804126 B CN 105804126B CN 201610156048 A CN201610156048 A CN 201610156048A CN 105804126 B CN105804126 B CN 105804126B
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- 239000004567 concrete Substances 0.000 title claims abstract description 70
- 239000002689 soil Substances 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims abstract description 16
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 46
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 46
- 239000010703 silicon Substances 0.000 claims abstract description 46
- 239000011148 porous material Substances 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 230000003287 optical effect Effects 0.000 claims abstract description 16
- 238000004088 simulation Methods 0.000 claims abstract description 16
- 238000009434 installation Methods 0.000 claims abstract description 10
- 239000000523 sample Substances 0.000 claims description 77
- 239000013307 optical fiber Substances 0.000 claims description 16
- 238000010008 shearing Methods 0.000 claims description 15
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 230000015271 coagulation Effects 0.000 claims description 4
- 238000005345 coagulation Methods 0.000 claims description 4
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 10
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000000835 fiber Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000013401 experimental design Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/10—Miscellaneous comprising sensor means
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth 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)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention relates to a method for arranging a microsensor on the surface of a simulated pile-soil interface shear concrete sample. The main structure comprises a concrete sample, a first nut rubber preformed hole, a second nut rubber preformed hole, a first open hole, a second open hole, a first groove, a second groove, a third groove, a fourth groove, a fifth groove, a sixth groove, a miniature fiber grating strain sensor, a miniature silicon piezoresistive soil pressure sensor, a miniature silicon piezoresistive pore water pressure sensor, an armored optical cable, a shielding waterproof wire, a nut and a rubber plug. Compared with the prior art, the method has the advantages of simple process and convenient operation, realizes the installation of the micro sensor on the surface of the pile-soil interface shear concrete sample, and can manufacture the concrete sample meeting the test design for the pile-soil interface shear simulation test system in batches, simply and high-quality, thereby greatly improving the test efficiency, saving the test cost, obtaining a large amount of pile-soil interface stress test data and being beneficial to the deep research of the pile-soil interface test.
Description
Technical field：
The invention belongs to pile foundation engineering technique field, it is related to a kind of simulation stake Soil Interface shearing test technique, particularly one
Kind simulation stake Soil Interface shearing concrete sample surface probe distribution method.
Background technology：
Static pressed pile extensive use in architectural engineering, prefabricated pile static(al) are pressed into during ground, acted on by soil resistance, stake
It is inseparable with soil, pile-soil system is formed, the key of pile-soil system is a Soil Interface, and the performance of pile side friction is exactly to pass through stake
What Soil Interface was realized.At present, the experimental study of stake Soil Interface is that the various materials of the soil body and simulation piles (including steel plate, are mixed
Solidifying soil etc.) various stake Soil Interface shearing tests are carried out, on improved boxshear apparatus, the lower box of boxshear apparatus is changed into precast concrete
Sample, make specimen surface roughness identical with pile body surface as far as possible, simulation concrete stake, in the prior art by being embedded in coagulation
" periscope " device miniature in soil sample directly measures distribution of the relative displacement along stake Soil Interface, and is not through trying in concrete
Miniature " sensor " device is buried in sample, so as to accurately estimate stake Soil Interface friction performance.Therefore in order to ask stake Soil Interface
Topic carries out further experimental study, and by improving existing measuring technology, research and development are a kind of in stake Soil Interface shears concrete sample
It is imperative to bury miniature " sensor " device and method.
The content of the invention：
It is an object of the invention to overcome the deficiencies in the prior art and defect, proposes a kind of simulation stake Soil Interface shearing coagulation
Soil sample surface probe distribution method, by reserving the method with cutting on concrete sample surface, microsensor is installed,
Measure a development and change for Soil Interface stress.
To achieve these goals, the present invention is in simulation stake Soil Interface shearing concrete sample surface probe installation aiding device
Middle realization, its specific the procedures of establishment are：
The first step, concrete soil sample, apart from concrete sample long side axis one side 50mm, short side edge 150mm
Both ends reserve two internal diameter 22mm, height 15mm nut respectively, diameter 22mm, height 15mm rubber are placed in nut
Plug, a diameter of 6mm cylindrical cavities are then drilled through in rubber stopper center, form diameter 6mm, depth 15mm the first nut
The spacing of rubber preformed hole and the second nut rubber preformed hole, the first nut rubber preformed hole and the second nut rubber preformed hole
200mm, concrete sample perforate depth 18mm；
Second step, at concrete sample long side axis another side 50mm, with a diameter of 20mm hole making drills perforate, shape
Into a diameter of 20mm, the first perforate and the second perforate that depth is 10mm；
3rd step, depth 3mm, width 3mm are being opened up respectively apart from the long side edge 50mm of concrete sample two both sides
Elongated first groove and the second groove；In the first nut rubber preformed hole, the second nut rubber preformed hole centre position, direction is mixed
Solidifying soil sample short side direction opens up depth 10mm, width 6mm the 3rd groove and the 4th groove；In the first perforate and the second perforate
Centre position, towards concrete sample short side direction, open up depth 15mm, width 6mm the 5th groove and the 6th groove；
4th step, mini optical fibre grating strain transducer is implanted into the first groove and the second groove, armored optical cable is from first
Groove and the second groove are drawn；Miniature silicon piezoresistance type soil pressure sensor is put into the first perforate and the second perforate, miniature silicon pressure drag
Formula soil pressure sensor contact surface flushes with concrete sample surface；Miniature silicon piezoresistance type pore water pressure sensor is put into first
Nut rubber preformed hole and the second nut rubber preformed hole, miniature silicon piezoresistance type pore water pressure sensor and the first nut rubber
Preformed hole, the second nut rubber preformed hole and concrete sample surface flush, the first nut rubber preformed hole, the second nut rubber
Leave 3mm depth in the bottom of preformed hole；Miniature silicon piezoresistance type soil pressure sensor and miniature silicon piezoresistance type pore water pressure sensing
The shielding waterproof wire of device is drawn from the 3rd groove, the 4th groove, the 5th groove, the 6th groove respectively.
5th step, with epoxy resin the first perforate, the second perforate, the first groove, the second groove, the 3rd groove, the 4th
Groove, the 5th groove and the 6th groove all encapsulate, the first perforate, the second perforate, the first groove, the second groove, the 3rd groove,
4th groove, the 5th groove and the 6th groove encapsulating face flush with concrete sample surface, complete to simulation stake Soil Interface shearing
The laying of concrete sample surface micro sensor.
The agent structure of simulation stake Soil Interface shearing concrete sample surface probe installation aiding device of the present invention includes
Concrete sample, the first nut rubber preformed hole, the second nut rubber preformed hole, the first perforate, the second perforate, the first groove,
Second groove, the 3rd groove, the 4th groove, the 5th groove, the 6th groove, mini optical fibre grating strain transducer, miniature silicon pressure
Resistive soil pressure sensor, miniature silicon piezoresistance type pore water pressure sensor, armored optical cable, shielding waterproof wire, nut and rubber
Plug；Concrete sample distance side axis line one side 50mm, short side edge 150mm both ends reserve two internal diameters and are respectively
22mm, it is highly 15mm nut, a diameter 22mm, height 15mm rubber stopper, two rubber is placed in two nuts
The the first nut rubber preformed hole and the second nut rubber that the center of plug has a diameter of 6mm, depth is 15mm are pre-
Box out, the spacing of the first nut rubber preformed hole and the second nut rubber preformed hole is 200mm, concrete sample perforate depth
18mm；Concrete sample distance side axis line another side 50mm, short side edge 150mm both ends have a diameter of 20mm,
Depth is 10mm the first perforate and the second perforate；The long side edge 50mm of concrete sample distance two both sides open up depth respectively
3mm, width 3mm the first groove and the second groove, the first groove and the equal break-through concrete sample of the second groove；First nut rubber
The centre position of glue preformed hole and the second nut rubber preformed hole opens up depth 10mm, width 6mm the 3rd groove and respectively
Four grooves；It is recessed that the centre position of first perforate and the second perforate opens up depth 15mm, width 6mm the 5th groove and the 6th respectively
Groove；Two mini optical fibre grating strain transducers of installation in first groove and the second groove, spacing 150mm, the first perforate and
Miniature silicon piezoresistance type soil pressure sensor is installed, miniature silicon piezoresistance type pore water pressure sensor is arranged on the in the second perforate
In one nut rubber preformed hole and the second nut rubber preformed hole；Two mini optical fibre gratings in first groove and the second groove
Armored optical cable series connection is respectively adopted in strain transducer, and armored optical cable is drawn by the first groove and the second groove, miniature silicon pressure drag
Formula soil pressure sensor and miniature silicon piezoresistance type pore water pressure sensor connect shielding waterproof wire, shielding waterproof wire respectively
Drawn respectively by the 3rd groove, the 4th groove, the 5th groove and the 6th groove.
The surface of concrete sample of the present invention is that the sawtooth of size rule is concavo-convex；Mini optical fibre grating strain transducer
A diameter of 1mm, length 10mm；A diameter of 20mm of miniature silicon piezoresistance type soil pressure sensor, it is highly 10mm；Miniature silicon
A diameter of 6mm of pressure resistance type pore water pressure sensor, it is highly 15m；A diameter of 3mm of armored optical cable, shielding waterproof wire
A diameter of 5mm.
Compared with prior art, its technique is simple, easy to operate by the present invention, realizes and shears concrete sample in stake Soil Interface
Microsensor is installed on surface, can be that stake Soil Interface shearing simulation pilot system makes completely in batches, simply, in high quality
The concrete sample of sufficient experimental design, so as to greatly improve test efficiency, experimentation cost is saved, and substantial amounts of stake pedosphere can be obtained
Face stress test data, beneficial to the further investigation of stake Soil Interface experiment.
Brief description of the drawings：
Fig. 1 is the agent structure principle schematic of the present invention.
Fig. 2 is mini optical fibre grating strain transducer cross-sectional schematic schematic diagram of the present invention.
Fig. 3 is miniature silicon piezoresistance type soil pressure sensor cross-sectional schematic schematic diagram of the present invention.
Fig. 4 is miniature silicon piezoresistance type pore water pressure sensor cross-sectional schematic schematic diagram of the present invention.
Embodiment：
The present invention is described in further detail by way of example and in conjunction with the accompanying drawings.
Embodiment：
The present embodiment simulation stake Soil Interface shearing concrete sample surface probe installation aiding device in realize, its specific cloth
If process is：
The first step, concrete soil sample 1, apart from the long side axis one side 50mm of concrete sample 1, short side edge
Two internal diameter 22mm, height 15mm nut 17 are reserved in 150mm both ends respectively, and diameter 22mm, height are placed in nut 17
15mm rubber stopper 18, a diameter of 6mm cylindrical cavities are then drilled through in the center of rubber stopper 18, form diameter 6mm, depth
15mm the first nut rubber preformed hole 2 and the second nut rubber preformed hole 3, the first nut rubber preformed hole 2 and the second nut
The spacing 200mm of rubber preformed hole 3, concrete sample perforate depth 18mm；
Second step, at the long side axis another side 50mm of concrete sample 1, with a diameter of 20mm hole making drills perforate,
Form a diameter of 20mm, the first perforate 4 and the second perforate 5 that depth is 10mm；
3rd step, depth 3mm, width 3mm are being opened up respectively apart from 1 liang of long side edge 50mm of concrete sample both sides
The elongated groove 7 of first groove 6 and second；In the first nut rubber preformed hole 2, the centre position of the second nut rubber preformed hole 3, court
Depth 10mm, width 6mm the 3rd groove 8 and the 4th groove 9 are opened up to the short side direction of concrete sample 1；In the He of the first perforate 4
The centre position of perforate 5, towards the short side direction of concrete sample 1, open up depth 15mm, width 6mm the 5th groove 10 and the 6th
Groove 11；
4th step, mini optical fibre grating strain transducer 12 is implanted into the first groove 6 and the second groove 7, armored optical cable from
First groove 6 and the second groove 7 are drawn；Miniature silicon piezoresistance type soil pressure sensor 13 is put into the first perforate 4 and the second perforate 5,
The miniature contact surface of silicon piezoresistance type soil pressure sensor 14 flushes with the surface of concrete sample 1；Miniature silicon piezoresistance type pore water pressure
Sensor 14 is put into the first nut rubber preformed hole 2 and the second nut rubber preformed hole 3, and miniature silicon piezoresistance type pore water pressure passes
Sensor 14 flushes with the first nut rubber preformed hole 2, the second nut rubber preformed hole 3 and the surface of concrete sample 1, the first nut
3mm depth is left in rubber preformed hole 2, the bottom of the second nut rubber preformed hole 3；The miniature He of silicon piezoresistance type soil pressure sensor 13
The shielding waterproof wire 16 of miniature silicon piezoresistance type pore water pressure sensor 14 is respectively from the 3rd groove 8, the 4th groove the 9, the 5th
Groove 10, the 6th groove 11 are drawn.
5th step, with epoxy resin the first perforate 4, the second perforate 5, the first groove 6, the second groove 7, the 3rd groove 8,
The all encapsulation of 4th groove 9, the 5th groove 10 and the 6th groove 11, the first perforate 4, the second perforate 5, the first groove 6, second are recessed
Groove 7, the 3rd groove 8, the 4th groove 9, the 5th groove 10 and the encapsulating face of the 6th groove 11 flush with the surface of concrete sample 1, complete
The laying of simulation stake Soil Interface shearing concrete sample surface micro sensor in pairs.
The agent structure bag of stake Soil Interface shearing concrete sample surface probe installation aiding device is simulated described in the present embodiment
Include concrete sample 1, the first nut rubber preformed hole 2, the second nut rubber preformed hole 3, the first perforate 4, the second perforate 5,
One groove 6, the second groove 7, the 3rd groove 8, the 4th groove 9, the 5th groove 10, the 6th groove 11, mini optical fibre grating strain
Sensor 12, miniature silicon piezoresistance type soil pressure sensor 13, miniature silicon piezoresistance type pore water pressure sensor 14, armored optical cable
15th, shielding waterproof wire 16, nut 17 and rubber stopper 18；The distance side axis line one side 50mm of concrete sample 1, short side edge
150mm both ends reserve two internal diameters and are 22mm, are highly 15mm nut 17 respectively, and one is placed in two nuts 17 directly
Footpath 22mm, height 15mm rubber stopper 18, the center of two rubber stoppers 18 have a diameter of 6mm, depth 15mm
The first nut rubber preformed hole 2 and the second nut rubber preformed hole 3, the first nut rubber preformed hole 2 and the second nut rubber
The spacing of preformed hole 3 is 200mm, concrete sample perforate depth 18mm；The distance side axis line another side of concrete sample 1
The first perforate 4 and the second perforate 5 that 50mm, short side edge 150mm both ends have a diameter of 20mm, depth is 10mm；
It is recessed that the long side edge 50mm of 1 distance of concrete sample two both sides open up depth 3mm, width 3mm the first groove 6 and second respectively
Groove 7,7 equal break-through concrete sample 1 of the first groove 6 and the second groove；First nut rubber preformed hole 2 and the second nut rubber are pre-
Box out 3 centre position opens up depth 10mm, width 6mm the 3rd groove 8 and the 4th groove 9 respectively；First perforate 4 and second
The centre position of perforate 5 opens up depth 15mm, width 6mm the 5th groove 10 and the 6th groove 11 respectively；First groove 6 and
Two mini optical fibre grating strain transducers 12 of installation in two grooves 7, spacing 150mm, in the first perforate 4 and the second perforate 5
Miniature silicon piezoresistance type soil pressure sensor 13 is installed, miniature silicon piezoresistance type pore water pressure sensor 14 is arranged on the first nut
In the nut rubber preformed hole 3 of rubber preformed hole 2 and second；Two mini optical fibre gratings in first groove 6 and the second groove 7 should
Change sensor 12 is respectively adopted armored optical cable 15 and connected, and armored optical cable 15 is drawn by the first groove 6 and the second groove 7, miniature
Silicon piezoresistance type soil pressure sensor 13 and miniature silicon piezoresistance type pore water pressure sensor 14 connect shielding waterproof wire 16 respectively,
Shielding waterproof wire 16 is drawn by the 3rd groove 8, the 4th groove 9, the 5th groove 10 and the 6th groove 11 respectively.
The surface of concrete sample 1 described in the present embodiment is that the sawtooth of size rule is concavo-convex；Mini optical fibre grating strain passes
A diameter of 1mm of sensor 12, length 10mm；A diameter of 20mm of miniature silicon piezoresistance type soil pressure sensor 13, highly it is
10mm；A diameter of 6mm of miniature silicon piezoresistance type pore water pressure sensor 14, it is highly 15m；Armored optical cable 15 it is a diameter of
3mm, a diameter of 5mm of shielding waterproof wire 16.
Claims (1)
1. one kind simulation stake Soil Interface shearing concrete sample surface micro sensor distribution method, its specific the procedures of establishment are：
The first step, concrete soil sample, apart from concrete sample long side axis one side 50mm, short side edge 150mm two
Two internal diameter 22mm, height 15mm nut are reserved in end respectively, and diameter 22mm, height 15mm rubber stopper are placed in nut,
Then a diameter of 6mm cylindrical cavities are drilled through in rubber stopper center, form diameter 6mm, depth 15mm the first nut rubber
The spacing of glue preformed hole and the second nut rubber preformed hole, the first nut rubber preformed hole and the second nut rubber preformed hole
200mm, concrete sample perforate depth 18mm；
Second step, at concrete sample long side axis another side 50mm, with a diameter of 20mm hole making drills perforate, formed straight
The first perforate and the second perforate that footpath is 20mm, depth is 10mm；
3rd step, apart from the long side edge 50mm of concrete sample two both sides open up respectively depth 3mm, width 3mm it is elongated
First groove and the second groove；In the first nut rubber preformed hole, the second nut rubber preformed hole centre position, towards concrete
Sample short side direction opens up depth 10mm, width 6mm the 3rd groove and the 4th groove；Among the first perforate and the second perforate
Position, towards concrete sample short side direction, open up depth 15mm, width 6mm the 5th groove and the 6th groove；
4th step, mini optical fibre grating strain transducer is implanted into the first groove and the second groove, armored optical cable is from the first groove
Drawn with the second groove；Miniature silicon piezoresistance type soil pressure sensor is put into the first perforate and the second perforate, miniature silicon piezoresistance type soil
Pressure sensor contacts face flushes with concrete sample surface；Miniature silicon piezoresistance type pore water pressure sensor is put into the first nut
Rubber preformed hole and the second nut rubber preformed hole, miniature silicon piezoresistance type pore water pressure sensor are reserved with the first nut rubber
Hole, the second nut rubber preformed hole and concrete sample surface are flushed, and the first nut rubber preformed hole, the second nut rubber are reserved
Leave 3mm depth in the bottom in hole；Miniature silicon piezoresistance type soil pressure sensor and miniature silicon piezoresistance type pore water pressure sensor
Shielding waterproof wire is drawn from the 3rd groove, the 4th groove, the 5th groove, the 6th groove respectively；
5th step, with epoxy resin the first perforate, the second perforate, the first groove, the second groove, the 3rd groove, the 4th groove,
5th groove and the 6th groove all encapsulate, the first perforate, the second perforate, the first groove, the second groove, the 3rd groove, the 4th
Groove, the 5th groove and the 6th groove encapsulating face flush with concrete sample surface, complete to simulation stake Soil Interface shearing coagulation
The laying of soil sample surface micro sensor；
The agent structure of simulation stake Soil Interface shearing concrete sample surface probe installation aiding device of the present invention includes coagulation
Soil sample, the first nut rubber preformed hole, the second nut rubber preformed hole, the first perforate, the second perforate, the first groove, second
Groove, the 3rd groove, the 4th groove, the 5th groove, the 6th groove, mini optical fibre grating strain transducer, miniature silicon piezoresistance type
Soil pressure sensor, miniature silicon piezoresistance type pore water pressure sensor, armored optical cable, shielding waterproof wire, nut and rubber stopper；
It is 22mm, height that concrete sample distance side axis line one side 50mm, short side edge 150mm both ends reserve two internal diameters respectively
For 15mm nut, a diameter 22mm, height 15mm rubber stopper, the centre bit of two rubber stoppers are placed in two nuts
Put and have a diameter of 6mm, the first nut rubber preformed hole and the second nut rubber preformed hole that depth is 15mm, the first spiral shell
The spacing of female rubber preformed hole and the second nut rubber preformed hole is 200mm, concrete sample perforate depth 18mm；Concrete tries
Sample distance side axis line another side 50mm, short side edge 150mm both ends have a diameter of 20mm, depth is 10mm the
One perforate and the second perforate；The long side edge 50mm of concrete sample distance two both sides open up depth 3mm, width 3mm respectively
First groove and the second groove, the first groove and the equal break-through concrete sample of the second groove；First nut rubber preformed hole and
The centre position of two nut rubber preformed holes opens up depth 10mm, width 6mm the 3rd groove and the 4th groove respectively；First opens
Hole and the centre position of the second perforate open up depth 15mm, width 6mm the 5th groove and the 6th groove respectively；First groove and
Two mini optical fibre grating strain transducers of installation in second groove, spacing 150mm, the first perforate and the interior installation of the second perforate
There is miniature silicon piezoresistance type soil pressure sensor, miniature silicon piezoresistance type pore water pressure sensor is reserved installed in the first nut rubber
In hole and the second nut rubber preformed hole；Two mini optical fibre grating strain transducers difference in first groove and the second groove
Connected using armored optical cable, armored optical cable is drawn by the first groove and the second groove, miniature silicon piezoresistance type soil pressure sensor
Shielding waterproof wire is connected respectively with miniature silicon piezoresistance type pore water pressure sensor, and shielding waterproof wire is recessed by the 3rd respectively
Groove, the 4th groove, the 5th groove and the 6th groove are drawn；
The surface of concrete sample of the present invention is that the sawtooth of size rule is concavo-convex；Mini optical fibre grating strain transducer it is straight
Footpath is 1mm, length 10mm；A diameter of 20mm of miniature silicon piezoresistance type soil pressure sensor, it is highly 10mm；Miniature silicon pressure drag
A diameter of 6mm of formula pore water pressure sensor, it is highly 15m；A diameter of 3mm of armored optical cable, shielding waterproof wire it is straight
Footpath is 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610156048.0A CN105804126B (en) | 2016-03-18 | 2016-03-18 | Method for arranging microsensors on surface of simulated pile-soil interface shear concrete sample |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610156048.0A CN105804126B (en) | 2016-03-18 | 2016-03-18 | Method for arranging microsensors on surface of simulated pile-soil interface shear concrete sample |
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| CN105804126A CN105804126A (en) | 2016-07-27 |
| CN105804126B true CN105804126B (en) | 2018-02-16 |
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| CN201610156048.0A Expired - Fee Related CN105804126B (en) | 2016-03-18 | 2016-03-18 | Method for arranging microsensors on surface of simulated pile-soil interface shear concrete sample |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109457740B (en) * | 2018-12-06 | 2023-08-22 | 宁波大学 | Measuring instrument capable of simultaneously measuring pile soil interface friction force, normal stress and pore water pressure and assembling and using method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1276950A1 (en) * | 1985-04-04 | 1986-12-15 | Среднеазиатское Отделение Всесоюзного Ордена Ленина Проектно-Изыскательского И Научно-Исследовательского Института "Гидропроект" Им.С.Я.Жука | Device for shear test of concrete |
| CN102042937B (en) * | 2009-10-14 | 2012-07-25 | 同济大学 | Site large-scale direct shearing test device of shearing strength of concrete and basement adhesion surface |
| CN104374648B (en) * | 2014-11-20 | 2017-07-25 | 广州市建筑科学研究院有限公司 | A kind of experimental rig and method for testing dynamic shear characteristic between pile tube and the slip casting soil body |
| CN104374649B (en) * | 2014-11-20 | 2017-07-25 | 广州市建筑科学研究院有限公司 | A kind of experimental rig and method for being used to observe shear deformation breaks down feature between pile tube and the slip casting soil body |
| CN104912124B (en) * | 2015-06-26 | 2016-08-24 | 青岛理工大学 | Pile-soil interface shear simulation test device for open concrete pipe pile |
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