CN210154952U - Shear test device for pre-buried channel on shield segment - Google Patents
Shear test device for pre-buried channel on shield segment Download PDFInfo
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- CN210154952U CN210154952U CN201920785710.8U CN201920785710U CN210154952U CN 210154952 U CN210154952 U CN 210154952U CN 201920785710 U CN201920785710 U CN 201920785710U CN 210154952 U CN210154952 U CN 210154952U
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Abstract
The utility model provides a shield constructs shear test device of pre-buried channel way on pipe piece, the device includes: the shear force detection device comprises a first plate body, a second plate body, a third plate body and a shear force detection device, wherein a first mounting hole is formed in the first plate body, and the first plate body is perpendicular to a pre-buried channel; the second plate body is vertically arranged on the first plate body and extends along the first plate body, a first shearing preformed hole is formed in the second plate body, and the first shearing preformed hole is used for allowing a shearing force detection device to penetrate through so as to detect the longitudinal shearing force of the bolt to be detected; the third plate body is vertically arranged at one end of the second plate body, the third plate body and the second plate body are vertically arranged, a second shearing preformed hole is formed in the third plate body and used for allowing the shearing force detection device to penetrate to detect the transverse shearing force of the bolt to be detected. The utility model discloses can truly reflect vertical, horizontal shearing force of pre-buried spout, and need not frequent auto-change over device.
Description
Technical Field
The utility model relates to a construction technical field relates to a shield constructs shear test device of pre-buried channel on section of jurisdiction particularly.
Background
The pre-buried channel and the T-shaped bolt fixed by the pre-buried channel can meet the requirements of various devices to be installed on a tunnel between subways and the vibration friction between a running train and a contact net, so that the T-shaped bolt fastened in the pre-buried channel is subjected to the action of longitudinal and transverse shear loads, the channel does not generate obvious plastic deformation or failure damage, and the safety of later-stage use of engineering is ensured. Therefore, how to accurately evaluate the stress of the T-shaped screw of the embedded channel becomes one of important indexes for evaluating the performance of the embedded channel.
There is provided a pre-buried channel device for shear test in utility model patent (CN208171764U), but the device buries the spout sample in advance in the concrete in the laboratory, only simulates pre-buried channel in-service operating mode, and the shearing force that its device surveyed can not represent the actual shearing force that receives of the pre-buried spout of on-the-spot shield segment more.
Still provide a multi-functional buried channel shearing force test frock in utility model patent (CN207779832U), the device is only simulation T type bolt and the spout shearing force between the spout among the spout at T type bolt-up, and is not carried out the spout and is pre-buried among the concrete.
The prior art still arranges section of jurisdiction width both sides in through two steel sheets, passes the steel sheet gap through the dowel steel to this is as the counter-force, but this method because the jack cross-section is located the section of jurisdiction edge, and during the loading, the steel sheet perk extrudees the section of jurisdiction edge, leads to section of jurisdiction edge concrete atress to collapse the limit easily, leads to this method success rate not high simultaneously, and is inefficient.
SUMMERY OF THE UTILITY MODEL
In view of the above situation, the utility model provides a shield constructs shear test device of pre-buried channel on section of jurisdiction more can represent the actual shearing force that receives of shield constructs the section of jurisdiction in the pre-buried channel that will wait to detect the bolt and locate the shield structure section of jurisdiction, through uniting two into one longitudinal shear force and horizontal shear force device, ann tears the convenience open, need not frequent auto-change over device, and the shear test device of pre-buried channel on solving current shield constructs the section of jurisdiction can not show shield and constructs the section of jurisdiction pre-buried channel reality when carrying out bolt shearing force detection the defect that the section of jurisdiction damaged easily is caused to the shear force and when carrying out the shearing.
In order to achieve the purpose, the utility model adopts the technical proposal that: the utility model provides a pre-buried spout shear test device, includes:
the embedded channel is arranged on the first plate body, and the first plate body is provided with a first mounting hole for fixing the first plate body on the embedded channel;
the second plate body is vertically arranged on the first plate body and extends along the first plate body, a first shearing preformed hole is formed in the second plate body, the first shearing preformed hole is used for allowing a shearing force detection device to penetrate through to detect the longitudinal shearing force of the bolt to be detected, and the bolt to be detected is slidably arranged in the embedded channel;
the third plate body is vertically arranged at one end of the second plate body, the third plate body is perpendicular to the second plate body, a second shearing preformed hole is formed in the third plate body, and the second shearing preformed hole is used for allowing the shearing force detection device to penetrate through so as to detect the transverse shearing force of the bolt to be detected;
the shearing force detection device comprises a jack, a dowel bar and a digital display dial indicator, the end of the jack abuts against the second plate body or the third plate body, the dowel bar is in driving connection with the jack, the dowel bar penetrates through the first shearing preformed hole or the second shearing preformed hole and then is fastened with the bolt to be detected to drive the jack, the jack applies longitudinal shearing force or transverse shearing force to the bolt to be detected through the dowel bar, and the digital display dial indicator is in contact connection with the dowel bar to display the deformation of the embedded channel caused by the stress of the bolt to be detected.
In the embodiment of the utility model provides an in, on the second plate body with the other end that the third plate body is relative is equipped with the hoist and mount board, the second mounting hole has been seted up on the hoist and mount board.
In the embodiment of the present invention, the first plate body and the second plate body are provided with a first stiffener therebetween.
In the embodiment of the utility model provides an in, the bottom of third plate body is equipped with the bottom plate, one side of bottom plate with first plate body is fixed, the bottom plate with be equipped with the second stiffening plate between the third plate body.
In the embodiment of the utility model provides an in, the length of second plate body is greater than the length of first plate body, the one end of second plate body extend to with the bottom plate reaches the third plate body meets.
The utility model discloses owing to adopted above technical scheme, make it have following beneficial effect:
(1) the utility model discloses pre-buried spout shear test device adopts the shield that the on-the-spot maintenance is due to pre-buried spout section of jurisdiction, can truly reflect the vertical, horizontal shearing force of pre-buried spout.
(2) The utility model has reasonable design, can combine the longitudinal shearing force device and the transverse shearing force device into a whole, and is convenient to assemble and disassemble without frequent switching devices; and simultaneously, the most unfavorable position of the bolt to be tested can be selected to reasonably adjust the position of the shear test device and fasten and fix the shear test device.
(3) The utility model discloses the hoist and mount hole and the spout channel of make full use of section of jurisdiction carry out fixed pre-buried spout shear test device, stability when having guaranteed the device to provide the counter-force; meanwhile, the base can be used for detecting the drawing force of the T-shaped bolt, and the device has strong applicability.
Drawings
Fig. 1 is the structure schematic diagram of the pre-buried chute shear test device of the utility model.
Fig. 2 is the utility model discloses pre-buried spout shear test device carries out the user state schematic diagram that horizontal shearing force detected.
Fig. 3 is the utility model discloses pre-buried spout shear test device carries out the user state schematic diagram that longitudinal shear force detected.
The correspondence of reference numerals to components is as follows:
a first plate body 1; a first mounting hole 11; a hoisting plate 12; a second mounting hole 121; a first stiffener plate 13; a base plate 14; a second stiffener plate 15; a second plate body 2; a first shear prepared hole 21; a third plate body 3; a second cut prepared hole 31; pre-buried channel 4; a bolt 5 to be detected; a shear force detection device 6; a shear dowel bar 61; dowel bar connectors 62; a digital display type hand oil pump 63; a jack 64; jack oil pipe 65; shear dowel bolts 66; a shear force transfer sleeve 67; a magnetic gauge stand 68; a base 69; a digital display dial indicator 60; the head 7 is grasped.
Detailed Description
To facilitate understanding of the present invention, the following description is made with reference to the accompanying drawings and examples.
Referring to fig. 1 to 3, the utility model provides a shearing test device for a pre-buried chute, which comprises a first plate body 1, a second plate body 2, a third plate body 3 and a shearing force detection device, wherein the first plate body 1 is provided with a first mounting hole 11 for fixing the first plate body 1 on a pre-buried channel 4, and the first plate body 1 and the pre-buried channel 4 are vertically arranged; the second plate body 2 is vertically arranged on the first plate body 1 and extends along the first plate body 1, a first shearing preformed hole 21 is formed in the second plate body 2, the first shearing preformed hole 21 is used for allowing a shearing force detection device to penetrate through to detect the longitudinal shearing force of the bolt 5 to be detected, and the bolt 5 to be detected is slidably arranged in the embedded channel 4; the third plate body 3 is vertically arranged at one end of the second plate body 2, the third plate body 3 is perpendicular to the second plate body 2, a second shearing preformed hole 31 is formed in the third plate body 3, and the second shearing preformed hole 31 is used for allowing a shearing force detection device to penetrate through so as to detect the transverse shearing force of the bolt 5 to be detected; the shearing force testing device comprises a jack 64, a dowel steel 61 and a digital display dial indicator 60, the end of the jack 64 abuts against the second plate body 2 or the third plate body 3, the dowel steel 61 is in driving connection with the jack 64, the dowel steel 61 penetrates through the first shearing preformed hole 21 or the second shearing preformed hole 31 and then is fastened with the bolt 5 to be tested to drive the jack 64, the jack 64 applies longitudinal shearing force or transverse shearing force to the bolt 5 to be tested through the dowel steel 61, and the digital display dial indicator 60 is in contact connection with the dowel steel 61 to display the deformation amount of the embedded channel 4 caused by the stress of the bolt 5 to be tested.
In order to further fix the shearing test device of the pre-buried channel on the shield segment, a hoisting plate 12 is arranged at the other end, opposite to the third plate body 3, of the second plate body 2, a second mounting hole 121 is formed in the hoisting plate 12, and the second mounting hole 121 is used for being connected and fixed with the grabbing head. The jack 64 can be provided with stable counter force by fixing the shear test device; the second plate body 2, the third plate body 3 abut against the jack 64, and can also provide a counter force for the jack 64.
Preferably, in order to improve the connection strength between the first board body 1 and the second board body 2, a first stiffening plate 13 is arranged between the first board body 1 and the second board body 2; in the embodiment of the present invention, the first stiffener 13 is a right-angled triangular plate, and two right-angled sides of the right-angled triangular plate are fixed to the first plate 1 and the second plate 2, respectively; the number of the first stiffening plates 13 is multiple, and the first stiffening plates are arranged between the first plate body 1 and the second plate body 2 at intervals; preferably, the first stiffener plates 13 are respectively disposed at two ends and a middle portion of the corresponding structure.
Preferably, in order to improve the connection strength between the second plate body 2 and the third plate body 3, a bottom plate 14 is arranged at the bottom of the third plate body 3, one side of the bottom plate 14 is fixed to the first plate body 1, and a second stiffening plate 15 is further arranged between the bottom plate 14 and the third plate body 3; in the embodiment of the present invention, the second stiffener 15 is a right-angled triangular plate, and two right-angled sides of the right-angled triangular plate are fixed to the third plate 3 and the bottom plate 14, respectively; the number of the second stiffening plates 15 is multiple, and the second stiffening plates are arranged between the third plate body 3 and the bottom plate 14 at intervals so as to improve the structural stability of the testing device of the utility model; preferably, the second stiffener plates 15 are respectively disposed at two ends and a middle portion of the corresponding structure.
Preferably, in order to improve the structural stability of the testing device of the present invention, the length of the second plate 2 is greater than the length of the first plate 1, one end of the second plate 2 extends to abut against the third plate 3, and one end of the second plate 2 is fixed to the third plate 3; in the embodiment of the utility model provides an in, the second plate body 2 is fixed in the middle part of third plate body 3, third plate body 3 is in second shearing preformed hole 31 has been seted up respectively to the both sides of second plate body 2.
The structure of the pre-buried channel shearing test device of the present invention is specifically described above, and the following description is provided with fig. 2 and fig. 3 to describe the method for detecting the longitudinal shearing force and the transverse shearing force of the pre-buried chute shearing test device.
S1: installing the shearing test device of the pre-buried channel on the shield pipe sheet on the pre-buried channel 4 through penetrating the first installation hole 11 by using a bolt, and enabling the pre-buried channel 4 to be perpendicular to the first plate body 1;
in order to further improve the stability of the shear test device of the pre-buried channel on the shield pipe sheet, the second mounting hole 121 is sleeved on the grabbing and lifting head to further fix the shear test device of the utility model;
s2: installing a bolt 5 to be detected in the embedded channel 4, connecting the bolt 5 to be detected with a shearing force detection device 6, wherein the shearing force detection device 6 is provided with a shearing dowel bar 61, the shearing dowel bar 61 is made to penetrate through the first shearing preformed hole 21 or the second shearing preformed hole 31, the end part of the shearing dowel bar 61 is provided with a dowel bar connector 62, and the dowel bar connector 62 is connected with the bolt 5 to be detected so as to detect the longitudinal shearing force or the transverse shearing force of the bolt 5 to be detected;
in the embodiment of the present invention, in order to accurately measure the shearing force of the bolt 5 to be detected, the position of the bolt 5 to be detected is adjusted, so that the bolt 5 to be detected is located at the most unfavorable position of the shearing force, i.e. between two chute bolts (not shown) on the pre-buried chute 4, one end of each chute bolt is fixed with the pre-buried chute 4, and the other end of each chute bolt is pre-buried in the segment concrete, so as to increase the anchoring force of the pre-buried chute 4 in the segment concrete;
the embodiment of the utility model provides an in, shearing force detection device 6 still includes digital display formula hand oil pump 63, jack oil pipe 65, cuts dowel steel bolt 66, cuts power sleeve 67, cuts dowel steel connector 62, magnetic gauge stand 68, base 69, shearing force detection device's connect the step and be:
s21: after one end of the shearing dowel bar 61 passes through the first shearing preformed hole 21 or the second shearing preformed hole 31, one end of the shearing dowel bar 61 is connected with a shearing dowel bar connector 62, and a bolt 5 to be detected, which is slidably arranged in the embedded channel 4, is fastened on the shearing dowel bar connector 62, wherein the fastening force needs to reach the fastening force recommended by a manufacturer;
then the jack 64 is arranged on one side of the second plate body 2 or the third plate body 3 far away from the embedded channel 4, the jack 64 is sleeved outside the shearing dowel bar 61, two shearing dowel sleeve pipes 67 are sleeved at two ends of the jack 64, one end of the jack 64 abuts against the second plate body 2 or the third plate body 3 to provide counter force, and the shearing dowel bar 61 is fixed with the jack 64 through a shearing dowel bar bolt 66;
s22: installing a jack oil pipe 65 and a digital display type hand-operated oil pump 63, wherein one end of the jack oil pipe 65 is connected with a jack 64, the other end of the jack oil pipe is connected with the output end of the digital display type hand-operated oil pump 63, the digital display type hand-operated oil pump 63 drives the jack 64 to apply acting force to the shearing dowel bar 61 through the jack oil pipe 65, and the shearing dowel bar 61 generates shearing force to the bolt 5 to be detected connected with the shearing dowel bar;
s23: the top end of the shearing dowel bar connector 62 is fixed with a digital display dial indicator 60 through a magnetic indicator seat 68, the magnetic indicator seat 68 is fixedly arranged on a base 69 by virtue of magnetic force, the digital display dial indicator 60 is used for displaying the deformation of the embedded groove mouth caused by the stress of the bolt to be detected, and the magnetic indicator seat 68 is used for fixing the digital display dial indicator 60;
s24: adjusting the digital display dial indicator 60 to enable the data of the digital display dial indicator 60 to return to zero, and opening the jack digital display indicator to enable the data of the jack digital display indicator to return to zero;
the connecting step of the shear force detection device may be any other suitable mounting sequence, and is not limited to the connecting step shown in the present application; the digital display type hand oil pump can be replaced by other suitable power mechanisms;
s3: starting the shearing force detection device 6 to detect a longitudinal shearing force or a transverse shearing force of the bolt 5 to be detected, wherein the longitudinal shearing force refers to the stress of the bolt 5 to be detected when the embedded channel 4 is parallel to the shearing dowel bar 61; the transverse shearing force refers to the stress of the bolt 5 to be detected when the embedded channel 4 is perpendicular to the shearing dowel bar 61; in the embodiment of the present invention, the shear force detection of the bolt 5 to be detected includes nondestructive shear force detection and destructive shear force detection; specifically, the method comprises the following steps:
non-destructive shear force: and opening the oil valve, loading at a constant speed, loading the design load within 2-3min at a uniform speed by using the hand oil pump 63, stabilizing for 2min, wherein the load value is reduced by not more than 5% of a stable value, and the deformation is not more than 1mm actually measured by the digital display dial indicator 60, namely the nondestructive shearing force is qualified.
Breaking shear force: the oil pressure pump is pressed by hand at a uniform rate within 2-3min, the load is added to the breaking load, or the deformation is measured by the digital display dial indicator 60 and reaches 1mm, the test is finished, the peak value of the oil pressure indicator is not less than the load of the design value, and the breaking shearing force is qualified.
The present invention has been described in detail with reference to the drawings and the embodiments, and those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details of the embodiments should not be construed as limitations of the invention, which are intended to be covered by the following claims.
Claims (5)
1. The utility model provides a shield constructs shear test device of pre-buried channel on section of jurisdiction which characterized in that includes:
the embedded channel is arranged on the first plate body, and the first plate body is provided with a first mounting hole for fixing the first plate body on the embedded channel;
the second plate body is vertically arranged on the first plate body and extends along the first plate body, a first shearing preformed hole is formed in the second plate body, the first shearing preformed hole is used for allowing a shearing force detection device to penetrate through to detect the longitudinal shearing force of the bolt to be detected, and the bolt to be detected is slidably arranged in the embedded channel;
the third plate body is vertically arranged at one end of the second plate body, the third plate body is perpendicular to the second plate body, a second shearing preformed hole is formed in the third plate body, and the second shearing preformed hole is used for allowing the shearing force detection device to penetrate through so as to detect the transverse shearing force of the bolt to be detected;
the shearing force detection device comprises a jack, a dowel bar and a digital display dial indicator, the end of the jack abuts against the second plate body or the third plate body, the dowel bar is in driving connection with the jack, the dowel bar penetrates through the first shearing preformed hole or the second shearing preformed hole and then is fastened with the bolt to be detected to drive the jack, the jack applies longitudinal shearing force or transverse shearing force to the bolt to be detected through the dowel bar, and the digital display dial indicator is in contact connection with the dowel bar to display the deformation of the embedded channel caused by the stress of the bolt to be detected.
2. The shear test device for the pre-buried channels on the shield pipe segment according to claim 1, wherein a hoisting plate is arranged at the other end of the second plate body, which is opposite to the third plate body, and a second mounting hole is formed in the hoisting plate.
3. The shear test device for the pre-buried channels on the shield pipe segment according to claim 1, wherein a first stiffening plate is arranged between the first plate body and the second plate body.
4. The shear test device for the pre-buried channels on the shield pipe segments according to claim 1, wherein a bottom plate is arranged at the bottom of the third plate body, one side of the bottom plate is fixed with the first plate body, and a second stiffening plate is arranged between the bottom plate and the third plate body.
5. The shear test device for the pre-buried channels on the shield pipe segment according to claim 4, wherein the length of the second plate body is greater than that of the first plate body, and one end of the second plate body extends to be connected with the bottom plate and the third plate body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920785710.8U CN210154952U (en) | 2019-05-29 | 2019-05-29 | Shear test device for pre-buried channel on shield segment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920785710.8U CN210154952U (en) | 2019-05-29 | 2019-05-29 | Shear test device for pre-buried channel on shield segment |
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| CN210154952U true CN210154952U (en) | 2020-03-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920785710.8U Active CN210154952U (en) | 2019-05-29 | 2019-05-29 | Shear test device for pre-buried channel on shield segment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110132759A (en) * | 2019-05-29 | 2019-08-16 | 中建八局轨道交通建设有限公司 | The shearing test device and its detection method of pre-buried channel flow on shield duct piece |
| CN113607572A (en) * | 2020-12-28 | 2021-11-05 | 江苏省建筑工程质量检测中心有限公司 | Channel body shear strength mechanical test tool and application thereof |
-
2019
- 2019-05-29 CN CN201920785710.8U patent/CN210154952U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110132759A (en) * | 2019-05-29 | 2019-08-16 | 中建八局轨道交通建设有限公司 | The shearing test device and its detection method of pre-buried channel flow on shield duct piece |
| CN110132759B (en) * | 2019-05-29 | 2024-02-09 | 中建八局轨道交通建设有限公司 | Shearing test device for pre-buried channel on shield segment and detection method thereof |
| CN113607572A (en) * | 2020-12-28 | 2021-11-05 | 江苏省建筑工程质量检测中心有限公司 | Channel body shear strength mechanical test tool and application thereof |
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