CN110146209A - Frictional resistance force test device and method when a kind of rectangular top pipe jacking - Google Patents
Frictional resistance force test device and method when a kind of rectangular top pipe jacking Download PDFInfo
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- CN110146209A CN110146209A CN201910510679.1A CN201910510679A CN110146209A CN 110146209 A CN110146209 A CN 110146209A CN 201910510679 A CN201910510679 A CN 201910510679A CN 110146209 A CN110146209 A CN 110146209A
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- rectangular tube
- frictional resistance
- top pipe
- jacking
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- 238000012360 testing method Methods 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000002689 soil Substances 0.000 claims abstract description 41
- 238000010276 construction Methods 0.000 claims abstract description 21
- 238000004088 simulation Methods 0.000 claims abstract description 21
- 229910000831 Steel Inorganic materials 0.000 claims description 21
- 239000010959 steel Substances 0.000 claims description 21
- 230000015572 biosynthetic process Effects 0.000 claims description 10
- 230000013011 mating Effects 0.000 claims description 6
- 230000005484 gravity Effects 0.000 claims description 3
- 238000010998 test method Methods 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims 1
- 239000002002 slurry Substances 0.000 abstract description 6
- 230000001603 reducing effect Effects 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 6
- 238000009412 basement excavation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000008450 motivation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0028—Force sensors associated with force applying means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses the frictional resistance force test devices and method when a kind of rectangular top pipe jacking, including the simulation soil body that level is laid with, for simulating live soil layer；Rectangular tube on the simulation soil body is set, for simulating rectangular top pipe；Traction device, for providing the horizontal drag force of rectangular tube jacking；Dynamometer is arranged between traction device and rectangular tube, for detecting the size of tractive force.The present invention, to obtain accurate push pipe frictional resistance size, can solve the problems, such as directly can not accurately determine push pipe frictional resistance size in current big cross section rectangular top pipe construction by simulating practice of construction operating condition jacking rectangular tube.The adaptability problem that the friction reducing effect that the present invention by test of many times, can also test antifriction mud changes with time between situation, and different slurries and different soil, to find the best antifriction mud match ratio of suitable soil layer.
Description
Technical field
The present invention relates to frictional resistance force test devices when pipe jacking construction technique field more particularly to a kind of rectangular top pipe jacking
And method.
Background technique
Jacking construction is a kind of non-excavating construction method of current increasingly developed application, and not needing excavation surface layer can wear
More existing highway, railway, river, underground utilities, underground structure and cultural relics and historic sites etc..Pipe jacking construction method avoids city
The excavated volume on road surface, reduce heavy earthwork, reduce removing and resettlement, save construction land tenure, reduce ambient enviroment interference and not
The interruptedly traffic of dough figurine stream and logistics transportation activity etc. are built in Urban Underground Space Excavation, subterranean railway rail traffic in recent years
If, find broad application in municipal tunnel engineering.
Jacking force is the call parameter of pipeline configuration design in pipe-jacking project, lectotype selection and work well construction design,
It is also the main control parameters that engineering success or failure are determined in work progress.Resistance suffered by usual jack-in process includes that cutterhead heads on
Resistance and pipe friction power two parts, in the case where formation properties and the buried depth variation that push pipe passes through are little, head resistance base
This holding is stablized, and pipe friction power increases with the increase of jacking distance, plays controlling to the size of jacking force.Cause
Can this, accurately determine that pipe friction power is to measure the important indicator of jacking efficiency and quality safety.
The determining major part of frictional resistance is all according to theoretical calculation method or some experience numbers in push pipe jacking construction at present
According to acquisition.The experimental rig and method of existing test push pipe frictional resistance size, can not simulate practice of construction operating condition, test is only
Frictional resistance between slurries and push pipe tube wall.In fact, the frictional resistance size that jacking pipe structure is subject in jacking construction and contact circle
The factors such as surface roughness, soil mass property, slurries property are related, and the interaction especially between slurries and the soil body is to frictional resistance
The influence of power size, therefore ignore the influence of the soil body, the frictional resistance only tested between push pipe and slurries can be differed with actual conditions compared with
Greatly.In addition, existing experimental rig is complicated, the jack-in process of push pipe can not be simulated.It therefore, is rationally determining jacking construction process
The frictional resistance size that middle jacking pipe structure is subject to, there is an urgent need to one kind directly can accurately test structure and soil in push pipe jack-in process
The device and method of frictional resistance size between body.
Summary of the invention
The object of the present invention is to provide the frictional resistance force test devices and method when a kind of rectangular top pipe jacking, can pass through mould
Quasi- practice of construction operating condition jacking rectangular tube solves current big cross section rectangular top pipe to obtain accurate push pipe frictional resistance size
The problem of push pipe frictional resistance size directly can not be accurately determined in construction.
To achieve the above object, the technical scheme is that a kind of frictional resistance force test device when rectangular top pipe jacking,
Including
The simulation soil body that level is laid with, for simulating live soil layer；
Rectangular tube on the simulation soil body is set, for simulating rectangular top pipe；
Traction device, for providing the horizontal drag force of rectangular tube jacking；
Dynamometer is arranged between traction device and rectangular tube, for detecting the size of tractive force.
It further, further include testing stand, testing stand is equipped with rectangular recess, and the simulation soil body is laid on rectangular recess
It is interior.
Further, the rectangular tube is the interior rectangle hollow box for setting counterweight, and rectangular tube jacking end lower part is equipped with chamfering, square
Shape tube top inlet side two sides are respectively equipped with the location hole of several corresponding rectangular tube difference heights of C.G., are connected with and lead between corresponding location hole
Messenger, traction rope middle part are connect with the fixing end of the dynamometer.
Further, the traction device setting is in described simulation soil body one end, including motor and control motor
The frequency converter of revolving speed, is wound with flexible steel cable in the shaft of motor, and the stretching end of flexible steel cable end and the dynamometer connects
It connects, in test process, flexible steel cable is wound by the shaft of electric rotating motivation, flexible steel cable stretches dynamometer, and passes through dynamometry
Meter, traction rope drive rectangular tube horizontal displacement, simulate the jack-in process of rectangular top pipe.
Further, the frequency converter is also connected with computer, for controlling the control frequency of frequency converter output, realizes electronic
The revolving speed of machine controls；Computer is also connect with the dynamometer, the force value size measured for collecting dynamometry.
Further, the dynamometer uses electronics weight beam.
A kind of test method of frictional resistance force test device when rectangular top pipe jacking, comprising the following steps:
(1) by the counterweight in increase and decrease rectangular tube, the earthing weight in practical jack-in process on rectangular top pipe is simulated；
(2) according to the centre of gravity adjustment traction rope mounting height of rectangular tube obtained in step (1)；
(3) rectangular tube obtained in step (2) is put into the rectangular recess of testing stand, will be connected in the middle part of flexible steel cable and traction rope
It connects, adjusts rectangular tube height, flexible steel cable is made be in horizontality, it is determined that rectangular tube lower surface is that the simulation soil body is mated formation depth
Degree；
(4) according to depth of mating formation obtained in step (3), the soil body will be simulated according to the soil layer situation layering filling examination of construction site
It tests in the rectangular recess on platform；
(5) rectangular tube obtained in step (2) is placed on the simulation soil body after mating formation, by the fixation of electronics weight beam
It is connect in the middle part of end and traction rope, the stretching end of electronics weight beam is connect with flexible steel cable；
(6) frequency converter output control frequency is controlled by computer, adjusts the revolving speed of motor, opens motor, keep rectangular tube even
Speed is advanced, and the force value size that the dynamometry that computer is collected into measures is frictional resistance.
The beneficial effects of the present invention are: the present invention can be by simulating practice of construction operating condition jacking rectangular tube, to obtain
Accurate push pipe frictional resistance size solves directly can not accurately determine that push pipe frictional resistance is big in current big cross section rectangular top pipe construction
Small problem.It is also possible to by test of many times, the friction reducing effect of test antifriction mud changes with time feelings
Adaptability problem between condition, and different slurries and different soil, to find the best antifriction mud cooperation of suitable soil layer
Than.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the structural schematic diagram of rectangular tube.
Specific embodiment
Below in conjunction with attached drawing, technical scheme in the embodiment of the invention is clearly and completely described.
As shown in Figure 1, frictional resistance force test device when a kind of rectangular top pipe jacking, comprising:
The simulation soil body 1 that level is laid with, for simulating live soil layer；
Testing stand 2, testing stand 2 are equipped with rectangular recess 3, and the simulation soil body 1 is laid in rectangular recess 3；
Rectangular tube 4 on the simulation soil body 1 is set, for simulating rectangular top pipe；
Traction device 5, for providing the horizontal drag force of 4 jacking of rectangular tube；
Dynamometer 6 is arranged between traction device 5 and rectangular tube 4, for detecting the size of tractive force；Dynamometer 6 uses electronic bomb
Spring dynamometer.
The rectangular tube 4 is the interior rectangle hollow box for setting counterweight, as shown in Fig. 2, 4 jacking end lower part of rectangular tube is equipped with chamfering
41,4 jacking end two sides of rectangular tube are respectively equipped with the location hole 42 of the different heights of C.G. of several corresponding rectangular tubes 4, corresponding location hole
Traction rope 43 is connected between 42,43 middle part of traction rope is connect with the fixing end of the dynamometer 6.
The setting of traction device 5 is in described 1 one end of the simulation soil body, including motor 51 and control 51 revolving speed of motor
Frequency converter 52, be wound with flexible steel cable 53, the stretching of 53 end of flexible steel cable and the dynamometer 6 in the shaft of motor 51
End connects, and in test process, winds flexible steel cable 53 by the shaft of electric rotating motivation 51, and flexible steel cable 53 stretches dynamometer 6,
And 4 horizontal displacement of rectangular tube is driven by dynamometer 6, traction rope 43, simulate the jack-in process of rectangular top pipe.
The frequency converter 52 is also connected with computer 54, for controlling the control frequency of the output of frequency converter 52, realizes motor
51 revolving speed control；Computer 54 is also connect with the dynamometer 6, the force value size measured for collecting dynamometer 6.
Above-mentioned apparatus can be by simulating practice of construction operating condition jacking rectangular tube, so that it is big to obtain accurate push pipe frictional resistance
It is small, it solves the problems, such as directly can not accurately determine push pipe frictional resistance size in current big cross section rectangular top pipe construction.It is specifically used
Process are as follows:
A kind of test method of frictional resistance force test device when rectangular top pipe jacking, comprising the following steps:
(1) by the counterweight in increase and decrease rectangular tube 4, the earthing weight in practical jack-in process on rectangular top pipe is simulated；
(2) according to 43 mounting height of centre of gravity adjustment traction rope of rectangular tube 4 obtained in step (1)；
(3) rectangular tube 4 obtained in step (2) is put into the rectangular recess 3 of testing stand 2, by flexible steel cable 53 and traction rope
43 middle part connections, 4 height of adjustment rectangular tube, make flexible steel cable 53 be in horizontality, it is determined that 4 lower surface of rectangular tube is mould
The quasi- soil body 1 is mated formation depth；
(4) according to depth of mating formation obtained in step (3), the soil body 1 will be simulated according to the soil layer situation of construction site and be layered filling
In rectangular recess 3 on testing stand；
(5) rectangular tube 4 obtained in step (2) is placed on the simulation soil body 1 after mating formation, by consolidating for electronics weight beam
It is connected in the middle part of fixed end and traction rope 43, the stretching end of electronics weight beam is connect with flexible steel cable 53；
(6) the output control frequency of frequency converter 52 is controlled by computer 54, adjusts the revolving speed of motor 51, opens motor 51, make
Rectangular tube 4 is at the uniform velocity advanced, and the force value size that the dynamometer 6 that computer 54 is collected into is measured is frictional resistance.
During above-mentioned test, multiple groups test can be carried out by increase and decrease counterweight, simulate in Practical Project and covered on different push pipes
The soil of lid is again to the influence of frictional resistance.
On the basis of above-mentioned test, by the way that slip casting can also be tested in simulation soil body surface one layer of antifriction mud of tiling
The friction reducing effect of frictional resistance and antifriction mud under operating condition changes with time situation.In addition, can also be by the simulation soil body
The antifriction mud of upper tiling different mixture ratio, tests the friction reducing effect of different mud.
Described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the present invention
In embodiment, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, belongs to the scope of the present invention.
Claims (7)
1. frictional resistance force test device when a kind of rectangular top pipe jacking, which is characterized in that including
The simulation soil body that level is laid with, for simulating live soil layer；
Rectangular tube on the simulation soil body is set, for simulating rectangular top pipe；
Traction device, for providing the horizontal drag force of rectangular tube jacking；
Dynamometer is arranged between traction device and rectangular tube, for detecting the size of tractive force.
2. frictional resistance force test device when a kind of rectangular top pipe jacking as described in claim 1, which is characterized in that further include examination
Platform is tested, testing stand is equipped with rectangular recess, and the simulation soil body is laid in rectangular recess.
3. frictional resistance force test device when a kind of rectangular top pipe jacking as described in claim 1, which is characterized in that the rectangle
Pipe is the interior rectangle hollow box for setting counterweight, and rectangular tube jacking end lower part is equipped with chamfering, if rectangular tube jacking end two sides are respectively equipped with
The location hole of corresponding rectangular tube difference height of C.G. is done, traction rope, traction rope middle part and the survey are connected between corresponding location hole
The fixing end of power meter connects.
4. frictional resistance force test device when a kind of rectangular top pipe jacking as claimed in claim 3, which is characterized in that the traction
Device setting is in described simulation soil body one end, the frequency converter including motor and control motor speed, the shaft of motor
On be wound with flexible steel cable, flexible steel cable end is connect with the stretching end of the dynamometer, in test process, passes through rotary electric
The shaft of machine winds flexible steel cable, and flexible steel cable stretches dynamometer, and drives rectangular tube horizontal position by dynamometer, traction rope
It moves, simulates the jack-in process of rectangular top pipe.
5. frictional resistance force test device when a kind of rectangular top pipe jacking as claimed in claim 4, which is characterized in that the frequency conversion
Device is also connected with computer, for controlling the control frequency of frequency converter output, realizes the revolving speed control of motor；Computer also with it is described
Dynamometer connection, the force value size measured for collecting dynamometry.
6. frictional resistance force test device when a kind of rectangular top pipe jacking as described in claim 1, which is characterized in that the dynamometry
Meter uses electronics weight beam.
7. a kind of test method of frictional resistance force test device when rectangular top pipe jacking, which comprises the following steps:
(1) by the counterweight in increase and decrease rectangular tube, the earthing weight in practical jack-in process on rectangular top pipe is simulated；
(2) according to the centre of gravity adjustment traction rope mounting height of rectangular tube obtained in step (1)；
(3) rectangular tube obtained in step (2) is put into the rectangular recess of testing stand, will be connected in the middle part of flexible steel cable and traction rope
It connects, adjusts rectangular tube height, flexible steel cable is made be in horizontality, it is determined that rectangular tube lower surface is that the simulation soil body is mated formation depth
Degree；
(4) according to depth of mating formation obtained in step (3), the soil body will be simulated according to the soil layer situation layering filling examination of construction site
It tests in the rectangular recess on platform；
(5) rectangular tube obtained in step (2) is placed on the simulation soil body after mating formation, by the fixation of electronics weight beam
It is connect in the middle part of end and traction rope, the stretching end of electronics weight beam is connect with flexible steel cable；
(6) frequency converter output control frequency is controlled by computer, adjusts the revolving speed of motor, opens motor, keep rectangular tube even
Speed is advanced, and the force value size that the dynamometry that computer is collected into measures is frictional resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910510679.1A CN110146209A (en) | 2019-06-13 | 2019-06-13 | Frictional resistance force test device and method when a kind of rectangular top pipe jacking |
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|---|---|---|---|
| CN201910510679.1A CN110146209A (en) | 2019-06-13 | 2019-06-13 | Frictional resistance force test device and method when a kind of rectangular top pipe jacking |
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| CN201910510679.1A Pending CN110146209A (en) | 2019-06-13 | 2019-06-13 | Frictional resistance force test device and method when a kind of rectangular top pipe jacking |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113720510A (en) * | 2021-08-24 | 2021-11-30 | 中国地质大学（武汉） | Intelligent pipe jacking pipe circumference friction resistance measuring method based on film pressure sensor |
| CN114002076A (en) * | 2021-11-02 | 2022-02-01 | 中交四航局第七工程有限公司 | Indoor test simulation device and method for push bench construction |
| CN114279612A (en) * | 2022-03-08 | 2022-04-05 | 华东交通大学 | System and method for testing frictional resistance of jacking pipe |
| CN114414117A (en) * | 2022-01-26 | 2022-04-29 | 合肥市市政设计研究总院有限公司 | Be suitable for friction testing arrangement that pipe curtain box culvert pushed in |
| WO2022105840A1 (en) * | 2021-11-05 | 2022-05-27 | 中铁四局集团第四工程有限公司 | Test device and method for measuring frictional resistance of thixotropic mud |
| CN117890563A (en) * | 2024-03-12 | 2024-04-16 | 安徽建筑大学 | Rectangular jacking pipe thixotropic slurry drag reduction and fluid loss performance test system and method |
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| CN102636430A (en) * | 2012-05-04 | 2012-08-15 | 上海交通大学 | Indoor simulation experiment system for pipe-jacking grouting drag reduction |
| CN208060057U (en) * | 2018-01-08 | 2018-11-06 | 中广核核电运营有限公司 | Sliding block slide plate friction experiment device |
| CN210037042U (en) * | 2019-06-13 | 2020-02-07 | 福建工程学院 | Frictional resistance testing device during jacking of rectangular jacking pipe |
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2019
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| JPH08304267A (en) * | 1995-05-15 | 1996-11-22 | Ohbayashi Corp | Frictional resistance testing device |
| KR20120071075A (en) * | 2010-12-22 | 2012-07-02 | 대한전선 주식회사 | Apparatus and method of measuring frictional coefficient between conduit and power cables |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113720510A (en) * | 2021-08-24 | 2021-11-30 | 中国地质大学（武汉） | Intelligent pipe jacking pipe circumference friction resistance measuring method based on film pressure sensor |
| CN113720510B (en) * | 2021-08-24 | 2022-07-19 | 中国地质大学（武汉） | Intelligent pipe jacking pipe circumference friction resistance measuring method based on film pressure sensor |
| CN114002076A (en) * | 2021-11-02 | 2022-02-01 | 中交四航局第七工程有限公司 | Indoor test simulation device and method for push bench construction |
| WO2022105840A1 (en) * | 2021-11-05 | 2022-05-27 | 中铁四局集团第四工程有限公司 | Test device and method for measuring frictional resistance of thixotropic mud |
| CN114414117A (en) * | 2022-01-26 | 2022-04-29 | 合肥市市政设计研究总院有限公司 | Be suitable for friction testing arrangement that pipe curtain box culvert pushed in |
| CN114414117B (en) * | 2022-01-26 | 2024-05-10 | 合肥市市政设计研究总院有限公司 | Frictional resistance testing device suitable for jacking pipe curtain box culvert |
| CN114279612A (en) * | 2022-03-08 | 2022-04-05 | 华东交通大学 | System and method for testing frictional resistance of jacking pipe |
| CN114279612B (en) * | 2022-03-08 | 2022-05-10 | 华东交通大学 | System and method for testing frictional resistance of jacking pipe |
| CN117890563A (en) * | 2024-03-12 | 2024-04-16 | 安徽建筑大学 | Rectangular jacking pipe thixotropic slurry drag reduction and fluid loss performance test system and method |
| CN117890563B (en) * | 2024-03-12 | 2024-05-28 | 安徽建筑大学 | Rectangular jacking pipe thixotropic slurry drag reduction and fluid loss performance test system and method |
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