CN110132759A - The shearing test device and its detection method of pre-buried channel flow on shield duct piece - Google Patents
The shearing test device and its detection method of pre-buried channel flow on shield duct piece Download PDFInfo
- Publication number
- CN110132759A CN110132759A CN201910454268.5A CN201910454268A CN110132759A CN 110132759 A CN110132759 A CN 110132759A CN 201910454268 A CN201910454268 A CN 201910454268A CN 110132759 A CN110132759 A CN 110132759A
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- plate body
- shearing
- buried channel
- channel flow
- bolt
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- 238000010008 shearing Methods 0.000 title claims abstract description 126
- 238000012360 testing method Methods 0.000 title claims abstract description 31
- 238000001514 detection method Methods 0.000 title claims abstract description 16
- 230000005540 biological transmission Effects 0.000 claims description 51
- 239000003351 stiffener Substances 0.000 claims description 14
- 239000003921 oil Substances 0.000 description 14
- 238000000034 method Methods 0.000 description 4
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/24—Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0025—Shearing
Abstract
The present invention provides the shearing test devices and its detection method of pre-buried channel flow on a kind of shield duct piece, described device includes: the first plate body, the second plate body, third plate body and shearing force detecting device, first plate body is equipped with the first mounting hole, and first plate body is vertical with pre-buried channel flow；Second plate body is erected on first plate body and extends along first plate body, the first shearing preformed hole is offered on second plate body, the first shearing preformed hole for shearing force detecting device for placing to detect the longitudinal shear of bolt to be detected；The third plate body is erected on one end of second plate body, the third plate body is vertically arranged with second plate body, the second shearing preformed hole is offered on the third plate body, the second shearing preformed hole is used to place for the shearing force detecting device to detect the cross shear of bolt to be detected.The present invention can really reflect the vertical, horizontal shearing force of built-in sliding chute, and not have to frequent switching device.
Description
Technical field
The present invention relates to technical field of building construction, a kind of shearing examination of pre-buried channel flow on shield duct piece is related in particular to
Experiment device and its detection method.
Background technique
Pre-buried channel flow and its T-bolt of fixation, which should be able to meet, needs various equipment to be mounted on subway sectional tunnel, with
And the vibration friction of the train and contact net in traveling, so that the T-bolt fastened in pre-buried channel flow is subjected to vertical, horizontal shearing and carries
The effect of lotus, so that conduit does not generate apparent plastic deformation or failure damage, the safety that the guarantee engineering later period uses.Cause
How the T-type spiral shell stress problem of accurate evaluation pre-buried channel flow becomes one of the important indicator for evaluating its performance for this.
It is provided with a kind of pre-buried channel flow shearing test device in utility model patent (CN208171764U), but the dress
Setting is to be embedded in sliding slot sample in concrete in advance in laboratory, only simulates pre-buried channel flow and actually uses operating condition, device
The shearing force surveyed can not represent shearing force suffered by live shield duct piece built-in sliding chute reality.
A kind of multi-functional pre-buried channel flow shearing test tooling is also provided in utility model patent (CN207779832U), it should
Device is only to be fastened on the shearing force simulated between T-bolt and sliding slot among sliding slot in T-bolt, there is no by sliding slot into
Row is embedded among concrete in advance.
The prior art is placed in section of jurisdiction width two sides also by two blocks of steel plates, steel plate gap is passed through by transmission rod, with this
As counter-force, but this method is because very heavy top section is located at section of jurisdiction edge, and when load, steel plate, which tilts, squeezes section of jurisdiction edge, appearance
The concrete stress chipping of section of jurisdiction edge is easily led to, it is not high to also result in this method success rate, inefficiency.
Summary of the invention
In view of the foregoing, the present invention provides the shearing test device of pre-buried channel flow and its detection side on a kind of shield duct piece
Method, by the way that bolt to be detected to be set in the pre-buried channel flow of shield duct piece more representative of suffered by shield duct piece pre-buried channel flow reality
Shearing force, it is convenient to assemble and disassemble by the way that longitudinal shear and cross shear device to be combined into one, do not have to frequent switching device, solution
The shearing test device of pre-buried channel flow cannot show shield pipe when carrying out bolt shear force detection on certainly existing shield duct piece
Piece pre-buried channel flow actually the shearing force and carry out shear force detection when be easy to cause section of jurisdiction damage defect.
To achieve the above object, the technical solution adopted by the present invention is that: a kind of built-in sliding chute shearing test device is provided, wrap
It includes:
First plate body, first plate body are equipped with for fixing first plate body in the first installation on pre-buried channel flow
Hole, first plate body are vertically arranged with the pre-buried channel flow；
Second plate body, second plate body is erected on first plate body and extends along first plate body, described
The first shearing preformed hole is offered on second plate body, the first shearing preformed hole is used to placed for shearing force detecting device to examine
The longitudinal shear of bolt to be detected is surveyed, the bolt to be detected is slidedly arranged in the pre-buried channel flow；
Third plate body is erected on one end of second plate body, and the third plate body is vertically arranged with second plate body,
The second shearing preformed hole is offered on the third plate body, the second shearing preformed hole is used to supply the shearing force detecting device
It places to detect the cross shear of the bolt to be detected；
The shearing force detecting device includes jack, transmission rod and digital display centimeter, and the end of the jack is supported
Second plate body or the third plate body, the transmission rod and the jack are drivingly connected, and the transmission rod places described
With the bolt fastening to be detected after first shearing preformed hole or the second shearing preformed hole, the jack is driven, it is described
Jack applies longitudinal shear or cross shear, the digital display centimeter to the bolt to be detected by the transmission rod
Connected with the transmission rod with show it is described it is to be detected it is bolt strained after lead to the deflection of pre-buried channel flow deformation.
In the embodiment of the present invention, the other end opposite with the third plate body is equipped with lifting plate, institute on second plate body
It states and offers the second mounting hole on lifting plate.
In the embodiment of the present invention, the first stiffener is provided between first plate body and second plate body.
In the embodiment of the present invention, the bottom of the third plate body is equipped with bottom plate, the side of the bottom plate and first plate
Body is fixed, the bottom plate and between the third plate body be equipped with the second stiffener.
In the embodiment of the present invention, the length of second plate body is greater than the length of first plate body, second plate body
One end extend to and connect with the bottom plate and the third plate body.
The present invention separately provides a kind of detection method using the shearing test device of pre-buried channel flow on the shield duct piece,
The following steps are included:
S1: first mounting hole is placed by bolt, the pre-buried channel flow experimental rig is installed on the pre-buried channel flow
On；
S2: bolt to be detected is installed in the pre-buried channel flow, the bolt to be detected and shearing force detecting device are connected
It connects, the shearing force detecting device has a shearing transmission rod, and the shearing transmission rod is enabled to pass through the first shearing preformed hole
Or the second shearing preformed hole, the end of the transmission rod is equipped with transmission rod connector, by the transmission rod connector with
It is described to be detected to be bolted；
S3: start the shearing force detecting device to detect the longitudinal shear or lateral shear of the bolt to be detected
Power.
The present invention due to use above technical scheme, make it have it is following the utility model has the advantages that
(1) built-in sliding chute shearing test device of the present invention is using scene maintenance overdue shield built-in sliding chute section of jurisdiction, can be with
The vertical, horizontal shearing force of true reflection built-in sliding chute.
(2) experimental rig design of the present invention is reasonable, while longitudinal shear and cross shear device can be closed two and be
One, it is convenient to assemble and disassemble not have to frequent switching device；Bolt most unfavorable combination to be measured, which can be chosen, reasonably adjusts shearing test device simultaneously
Position and be fastened and fixed.
(3) present invention makes full use of the hole for hoist of section of jurisdiction and sliding slot conduit that built-in sliding chute shearing test device is fixed,
It ensure that the stability when device provides counter-force；Pedestal can also serve as the detection of T-bolt pulling capacity, device applicability simultaneously
By force.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of built-in sliding chute shearing test device of the present invention.
Fig. 2 is the use state diagram that built-in sliding chute shearing test device of the present invention carries out cross shear detection.
Fig. 3 is the use state diagram that built-in sliding chute shearing test device of the present invention carries out longitudinal shear detection.
The corresponding relationship of appended drawing reference and component is as follows:
First plate body 1；First mounting hole 11；Lift plate 12；Second mounting hole 121；First stiffener 13；Bottom plate 14；The
Two stiffeners 15；Second plate body 2；First shearing preformed hole 21；Third plate body 3；Second shearing preformed hole 31；Pre-buried channel flow 4；To
Detect bolt 5；Shearing force detecting device 6；Shear transmission rod 61；Transmission rod connector 62；Digital display type oil hand pump 63；Jack
64；Jack oil pipe 65；Shear transmission rod bolt 66；Shear power transmission casing 67；Magnetic stand 68；Pedestal 69；Digital display centimeter
60；Snatch head 7.
Specific embodiment
For the benefit of to understanding of the invention, it is illustrated with reference to the accompanying drawings and embodiments.
Shown in please referring to Fig.1 to Fig.3, the present invention provides a kind of built-in sliding chute shearing test device, including the first plate body 1,
Second plate body 2, third plate body 3 and shearing force detecting device, first plate body 1 are equipped with for fixing first plate body 1
In the first mounting hole 11 on pre-buried channel flow 4, first plate body 1 is vertically arranged with the pre-buried channel flow 4；Second plate body
2 are erected on first plate body 1 and extend along first plate body 1, and it is pre- to offer the first shearing on second plate body 2
Box out 21, the first shearing preformed hole 21 for shearing force detecting device for placing to detect the longitudinal direction of bolt 5 to be detected and cut
Shear force, the bolt 5 to be detected are slidedly arranged in the pre-buried channel flow 4；The third plate body 3 is erected on second plate body 2
One end, the third plate body 3 are vertically arranged with second plate body 2, and the second shearing preformed hole is offered on the third plate body 3
31, the second shearing preformed hole 31 is used to place for shearing force detecting device with the Transverse Shear of the detection bolt 5 to be detected
Shear force；The shearing force testing device includes jack 64, transmission rod 61 and digital display centimeter 60, the end of the jack 64
Second plate body 2 or the third plate body 3 are supported, the transmission rod 61 is drivingly connected with the jack 64, the power transmission
Bar 61 fastens after placing the first shearing preformed hole 21 or the second shearing preformed hole 31 with the bolt 5 to be detected, drives
Move the jack 64, the jack 64 by the transmission rod 61 to the bolt 5 to be detected apply longitudinal shear or
Cross shear, after the digital display centimeter 60 is connected with the transmission rod 61 to show 5 stress of bolt to be detected
The deflection for causing the pre-buried channel flow 4 to deform.
In order to further fix the shearing test device of pre-buried channel flow on the shield duct piece, on second plate body 2 with
The opposite other end of the third plate body 3 is equipped with lifting plate 12, offers the second mounting hole 121 on the lifting plate 12, described
Second mounting hole 121 with snatch head for being connected and fixed.It can be described very heavy by the fixation to the shearing test device
Top 64 provides stable counter-force；Second plate body 2, the third plate body 3 and the jack 64 are supported, and also can be described
Jack 64 provides counter-force.
More preferably, in order to improve the bonding strength of first plate body 1 with second plate body 2, first plate body 1 with
The first stiffener 13 is provided between second plate body 2；In the embodiment of the present invention, first stiffener 13 is right angle trigonometry
Shape plate, two right-angle sides of the modification of right-angled triangle plate are fixed with first plate body 1, second plate body 2 respectively；Described
The quantity of one stiffener 13 be it is multiple, interval be set between first plate body 1 and second plate body 2；Preferably, described
One stiffener 13 is respectively arranged on the both ends and middle part of counter structure.
More preferably, in order to improve the bonding strength of second plate body 2 with the third plate body 3, the third plate body 3
Bottom is equipped with bottom plate 14, and the side of the bottom plate 14 and first plate body 1 are fixed, the bottom plate 14 and the third plate body 3
Between be additionally provided with the second stiffener 15；In the embodiment of the present invention, second stiffener 15 is modification of right-angled triangle plate, the right angle
Two right-angle sides of triangular plate are fixed with the third plate body 3, the bottom plate 14 respectively；The quantity of second stiffener 15
Be it is multiple, interval is set between the third plate body 3 and the bottom plate 14, to improve the stable structure of experimental rig of the present invention
Property；Preferably, second stiffener 15 is respectively arranged on the both ends and middle part of counter structure.
More preferably, in order to improve the structural stability of experimental rig of the present invention, the length of second plate body 2 is greater than described
The length of first plate body 1, one end of second plate body 2 is extended to offset with the third plate body 3, second plate body 2
One end and the third plate body 3 are fixed；In the embodiment of the present invention, second plate body 2 is fixed in the third plate body 3
Portion, the third plate body 3 offer the second shearing preformed hole 31 in the two sides of second plate body 2 respectively.
The details described above structure of pre-buried channel flow shearing test device of the present invention, illustrates benefit below in conjunction with Fig. 2, Fig. 3
The detection method of longitudinal shear, cross shear is carried out with the built-in sliding chute shearing test device.
S1: first mounting hole 11 is placed for the shearing test device of pre-buried channel flow on the shield duct piece by bolt
It is installed on the pre-buried channel flow 4, enables the pre-buried channel flow 4 vertical with first plate body 1；
In order to further increase the stability of the shearing test device of pre-buried channel flow on shield duct piece, by the second mounting hole
121 are sheathed on snatch head to further fix shearing test device of the present invention；
S2: bolt 5 to be detected is installed in the pre-buried channel flow 4, by the bolt 5 to be detected and shearing force detecting device
6 connections, the shearing force detecting device 6 have a shearing transmission rod 61, enable the shearing transmission rod 61 pass through described first and cut
Preformed hole 21 or the second shearing preformed hole 31 are cut, the end of the shearing transmission rod 61 is equipped with transmission rod connector 62,
The transmission rod connector 62 is connect with the bolt 5 to be detected with detect the longitudinal shear of the bolt to be detected 5 or
Cross shear；
In the embodiment of the present invention, in order to accurately measure the shearing force of bolt 5 to be detected, the position of bolt 5 to be detected is adjusted,
So that the bolt to be detected 5 is located at shearing force most unfavorable combination, as on built-in sliding chute 4 two chute bolt (not shown) it
Between, one end of the chute bolt and the built-in sliding chute 4 are fixed, and the other end of the chute bolt is embedded in section of jurisdiction concrete in advance
It is interior, to increase anchor force of the built-in sliding chute 4 in the concrete of section of jurisdiction；
In the embodiment of the present invention, the shearing force detecting device 6 further includes digital display type oil hand pump 63, jack oil pipe
65, transmission rod bolt 66, shearing power transmission casing 67, shearing transmission rod connector 62, magnetic stand 68, pedestal 69 are sheared, it is described
The Connection Step of shearing force detecting device are as follows:
S21: it after the one end for shearing transmission rod 61 is passed through the first shearing preformed hole 21 or the second shearing preformed hole 31, is cutting
One end connection shearing transmission rod connector 62 for cutting transmission rod 61, the bolt to be detected 5 being slidedly arranged in pre-buried channel flow 4 is fastened on
It shears on transmission rod connector 62, fastening force need to reach the fastening force of manufacturer's recommended；
Then the jack 64 is set to the side of second plate body 2 or third plate body 3 far from the pre-buried channel flow 4,
Jack 64 is sheathed on the outside of the shearing transmission rod 61 and two shearing power transmission casings 67 are sheathed on the jack 64
End positions at, one end of the jack 64 and second plate body 2 or the third plate body 3 offset to provide counter-force,
The shearing transmission rod 61 is fixed by shearing transmission rod bolt 66 and the jack 64；
S22: installation jack oil pipe 65 and digital display type oil hand pump 63, one end of the jack oil pipe 65 and jack
64 connections, the other end are connect with the output end of digital display type oil hand pump 63, and the digital display type oil hand pump 63 passes through described very heavy
Oil push tube 65 drives the jack 64 to apply active force to the shearing transmission rod 61, and the shearing transmission rod 61 connects to it
The bolt to be detected 5 connect generates shearing force；
S23: pass through the fixed digital display centimeter 60 of magnetic stand 68, the magnetic power meter on shearing 62 top of transmission rod connector
Seat 68 be placed on pedestal 69 by magnetic force it is fixed, the digital display centimeter 60 for show it is to be detected it is bolt strained after cause it is pre-buried
The deflection of groove channel port deformation, the magnetic stand 68 is for fixing the digital display centimeter 60；
S24: adjustment digital display centimeter 60 makes the zeroing data of digital display centimeter 60, opens jack digital display meter, make very heavy
Push up the zeroing data of digital display meter；
The Connection Step of the shearing force detecting device can be other any suitable erection sequences, be not limited to the application
Shown in Connection Step；The digital display type oil hand pump also could alternatively be other suitable power mechanisms；
S3: start the shearing force detecting device 6 to detect the longitudinal shear or lateral shear of the bolt to be detected 5
Power, the longitudinal shear refer to the bolt 5 to be detected when the pre-buried channel flow 4 is parallel with the shearing transmission rod 61
Stress；The cross shear refers to the bolt 5 to be detected when the pre-buried channel flow 4 is vertical with the shearing transmission rod 61
Stress；In the embodiment of the present invention, the shear force detection of the bolt 5 to be detected includes non-demolition shearing force and destructive power shearing force
Detection；Specifically:
Non-demolition shearing force: opening oil valve, at the uniform velocity load, by oil hand pump 63 using uniform rate in the 2-3min time
It is inside loaded to design load, and stablizes 2min, payload values reduction should not exceed the 5% of stationary value, and pass through digital display centimeter 60
Observational deformation amount is not greater than 1mm, i.e. non-demolition shearing force is qualified.
It destroys shearing force: breaking load being loaded to using uniform rate within the 2-3min time by oil hand pump or is led to
Off-test when 60 observational deformation amount of digital display centimeter reaches 1mm is crossed, oil pressure gauge peak value cannot be less than design value load, i.e., broken
Bad shearing force is qualified.
It is described the invention in detail above in conjunction with accompanying drawings and embodiments, those skilled in the art can basis
Above description makes many variations example to the present invention.Thus, certain details in embodiment should not constitute limitation of the invention,
The present invention will be using the range that the appended claims define as protection scope of the present invention.
Claims (6)
1. the shearing test device of pre-buried channel flow on a kind of shield duct piece characterized by comprising
First plate body, first plate body are equipped with for fixing first plate body in the first mounting hole on pre-buried channel flow,
First plate body is vertically arranged with the pre-buried channel flow；
Second plate body, second plate body are erected on first plate body and extend along first plate body, described second
Offer the first shearing preformed hole on plate body, the first shearing preformed hole be used to place for shearing force detecting device with detect to
The longitudinal shear of bolt is detected, the bolt to be detected is slidedly arranged in the pre-buried channel flow；
Third plate body is erected on one end of second plate body, and the third plate body is vertically arranged with second plate body, described
The second shearing preformed hole is offered on third plate body, the second shearing preformed hole is used to place for the shearing force detecting device
To detect the cross shear of the bolt to be detected；
The shearing force detecting device includes jack, transmission rod and digital display centimeter, and the end of the jack is supported described
Second plate body or the third plate body, the transmission rod and the jack are drivingly connected, and the transmission rod places described first
With the bolt fastening to be detected after shearing preformed hole or the second shearing preformed hole, the jack is driven, it is described very heavy
Top applies longitudinal shear or cross shear, the digital display centimeter and institute to the bolt to be detected by the transmission rod
State transmission rod connect with show it is described it is to be detected it is bolt strained after lead to the deflection of pre-buried channel flow deformation.
2. the shearing test device of pre-buried channel flow on shield duct piece according to claim 1, which is characterized in that described second
The other end opposite with the third plate body is equipped with lifting plate on plate body, offers the second mounting hole on the lifting plate.
3. the shearing test device of pre-buried channel flow on shield duct piece according to claim 1, which is characterized in that described first
The first stiffener is provided between plate body and second plate body.
4. the shearing test device of pre-buried channel flow on shield duct piece according to claim 1, which is characterized in that the third
The bottom of plate body is equipped with bottom plate, and the side of the bottom plate fixes with first plate body, the bottom plate and with the third plate body
Between be equipped with the second stiffener.
5. the shearing test device of pre-buried channel flow on shield duct piece according to claim 4, which is characterized in that described second
The length of plate body is greater than the length of first plate body, and one end of second plate body extends to and the bottom plate and the third
Plate body connects.
6. a kind of shearing test using pre-buried channel flow on shield duct piece described in any claim in claim 1 to 5 fills
The detection method set, which comprises the following steps:
S1: first mounting hole is placed by bolt, the pre-buried channel flow experimental rig is installed on the pre-buried channel flow；
S2: bolt to be detected is installed in the pre-buried channel flow, the bolt to be detected is connect with shearing force detecting device, institute
Shearing force detecting device is stated with a shearing transmission rod, the shearing transmission rod is enabled to pass through the first shearing preformed hole or described
The end of second shearing preformed hole, the shearing transmission rod is equipped with transmission rod connector, by the transmission rod connector and institute
State to be detected be bolted；
S3: start the shearing force detecting device to detect the longitudinal shear or cross shear of the bolt to be detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910454268.5A CN110132759B (en) | 2019-05-29 | 2019-05-29 | Shearing test device for pre-buried channel on shield segment and detection method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910454268.5A CN110132759B (en) | 2019-05-29 | 2019-05-29 | Shearing test device for pre-buried channel on shield segment and detection method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110132759A true CN110132759A (en) | 2019-08-16 |
| CN110132759B CN110132759B (en) | 2024-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910454268.5A Active CN110132759B (en) | 2019-05-29 | 2019-05-29 | Shearing test device for pre-buried channel on shield segment and detection method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112710565A (en) * | 2020-12-16 | 2021-04-27 | 武汉材料保护研究所有限公司 | Channel on-site shearing force experimental device and method for lossless concrete |
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