CN107941601A - A kind of load maintainer of shield tunnel construction duct piece connector test device - Google Patents
A kind of load maintainer of shield tunnel construction duct piece connector test device Download PDFInfo
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- CN107941601A CN107941601A CN201711382547.2A CN201711382547A CN107941601A CN 107941601 A CN107941601 A CN 107941601A CN 201711382547 A CN201711382547 A CN 201711382547A CN 107941601 A CN107941601 A CN 107941601A
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- 238000012360 testing method Methods 0.000 title claims abstract description 37
- 238000010276 construction Methods 0.000 title claims abstract description 13
- 238000002474 experimental method Methods 0.000 claims abstract description 34
- 238000005452 bending Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
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- 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
- G01N3/02—Details
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- 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
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
-
- 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
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
A kind of load maintainer of shield tunnel construction duct piece connector test device, including the L shaped plate positioned at experiment straight tube piece both sides, L shaped plate is superimposed on the middle part of the L-shaped beam of experimental rig, and realized and bolted by bolt, the L shaped plate is equipped with the vertical floor pair vertical with its transverse slat and riser, the floor of vertical connecting plate inserts in vertical floor centering, and with vertical floor to hinged；Widen to form protrusion before and after the end at the experiment straight tube piece both ends, connecting plate tests the end of straight tube piece by being fixed on through raised bolt；Front portion, the rear portion for testing the L-shaped beam of straight tube piece left end are embedded in inverted L-shaped block, and are bolted；The right side of inverted L-shaped block and the bottom of left oil cylinder bolt, and the cylinder rod of left oil cylinder and the left end of tie-beam bolt, and the L-shaped beam of the right end and experiment straight tube piece right end of tie-beam bolts.This kind of load maintainer can apply axial tension, expanding test scope, and make result of the test more accurate, reliable.
Description
Technical field
The present invention relates to a kind of load maintainer of shield tunnel construction duct piece connector test device.
Background technology
Shield tunnel largely uses in the engineerings such as city underground, pipe gallery and Large Underwater tunnel.Shield tunnel
Liner structure is that shield duct piece is formed by connecting by connector.Shield duct piece connector holds as the attachment device and weak link of section of jurisdiction
It is easily damaged, and once damaged construction that will be to engineering, operation cause to seriously affect and repair extremely difficult connector.So
The analysis and research of duct piece connector mechanical characteristic are just particularly important.It is generally necessary to by duct piece connector test to its stress characteristic
Tested, so as to provide test data for the design of shield tunnel, construction, operation.
The loading device of existing duct piece connector test, is that the both ends for testing section of jurisdiction are placed in L shaped plate, L shaped plate bolt exists
On the L-shaped beam of experimental rig.During experiment, the L-shaped beam of the jack on the right side of experimental rig to the right applies thrust to the left, with
Duct piece connector axial compressive force is simulated, the jack above experimental rig applies vertical force to by vertical reinforcing girder to section of jurisdiction, with
Simulate duct piece connector moment of flexure.There are the problem of following two aspects for it：
(1) unreasonable in BORDER PROCESSING, experiment section of jurisdiction exists with the plate upper surface of L shaped plate to be contacted, in experiment process
In, because being applied with vertical force, cause section of jurisdiction, there are larger shearing, easily to shear the generation of section of jurisdiction in contact surface marginal position
Destroy, it is different from the stress of actual section of jurisdiction simple bending state, cause that result of the test error is big, reliability is low.
(2) axial compressive force of horizontal thrust simulation section of jurisdiction is applied using level jack, vertical jack applies vertical force
To simulate moment of flexure.It can however not apply axial tension.Its trial stretch has larger limitation, can not carry out section of jurisdiction and be subject to axis
Connector test under to pulling force.
The content of the invention
The purpose of the present invention is to propose to a kind of load maintainer of shield tunnel construction duct piece connector test device, this kind loading
Mechanism can make the experiment of shield tunnel construction duct piece connector test more accurate, reliable；And can apply axial tension when testing, test
Scope bigger, thus for the design of shield tunnel, construction, operation provide more comprehensively, accurately, reliable test data.
The technical scheme adopted by the invention for realizing the object of the invention is a kind of shield tunnel construction duct piece connector test dress
The load maintainer put, including experiment straight tube piece, the L-shaped beam at experimental rig both ends, the experimental rig above experiment straight tube piece
Top loading device, the right side loading device for the experimental rig being connected with the L-shaped beam of right end；Positioned at experiment straight tube piece both sides
L shaped plate, L shaped plate is superimposed on the middle part of the L-shaped beam of experimental rig, and is realized and bolted by bolt, it is characterized in that：
The L shaped plate is equipped with the vertical floor pair vertical with its transverse slat and riser, and the floor of vertical connecting plate is inserted
In vertical floor centering, and with vertical floor to hinged；Widen to form protrusion before and after the end at the experiment straight tube piece both ends,
Connecting plate tests the end of straight tube piece by being fixed on through raised bolt；
Front portion, the rear portion for testing the L-shaped beam of straight tube piece left end are embedded in inverted L-shaped block, and are bolted；Inverted L-shaped
The right side of block and the bottom of left oil cylinder bolt, and the cylinder rod of left oil cylinder and the left end of tie-beam bolt, the right end of tie-beam and examination
Test the L-shaped beam bolt of straight tube piece right end.
Working process and principle of the invention are：
The realization of axial tension：During experiment, the right side loading device of experimental rig is closed, makes the left oil cylinder of front and rear
Cylinder rod release to the right, the front and rear of the L-shaped beam on right side, the L-shaped beam on right side are promoted by the tie-beam of front and rear
Middle part by right end L shaped plate by test straight tube piece pull to the right；And test straight tube piece left end and left side is fixed on by L shaped plate
The middle part of L-shaped beam, so that experiment straight tube piece is subject to axial tension to the right, simulates the operating mode that section of jurisdiction is subject to axial tension.
The realization of connector moment of flexure：Downward thrust is applied to experiment straight tube by the top loading device of experimental rig during experiment
In the middle part of piece, since experiment straight tube piece both ends are in articulated structure, both sides can arbitrarily rotate, so that in the middle part of experiment straight tube piece
Joint location be in simple bending state (being solely subjected to moment of flexure, be not subject to shear), can intactly simulate what duct piece connector was subject to
Positive moment of flexure (the lower surface tension of section of jurisdiction) operating mode.
The duct piece connector test of the simple bending state under axial tension state can be simulated by being carried out at the same time both the above operation.
Compared with prior art, the beneficial effects of the invention are as follows：
First, experiment straight tube piece be hinged by plate in succession and L-shaped beam, experiment straight tube piece bottom it is hanging, not with any connection
Part contacts, and in vertical loading procedure, section of jurisdiction both sides can arbitrarily rotate, and not produce additional bending moment, and duct piece connector is not subject to
Bear shearing force.So that the joint location of experiment straight tube piece is in simple bending state (being solely subjected to moment of flexure, be not subject to shear), can be with
Intactly simulate positive moment of flexure (the lower surface tension of section of jurisdiction) and the actual stress shape of duct piece connector that duct piece connector is subject to
State is closer.Make result of the test more true, accurate, reliably.
2nd, the axial tension loading device that left side oil cylinder, L-shaped contiguous block, tie-beam are formed, realizes axial tension load
Application.The operating mode of axial tension can be born with simulation test straight tube piece, so as to to duct piece connector in earthquake etc.
Pulled condition under particular surroundings is tested, and has widened the trial stretch of experimental rig, can be the shield pipe under tension environment
Design, construction, the operation of strip terminal provide reliable test basis.
3rd, widen to form protrusion at experiment straight tube piece both ends, the bolt for connecting section of jurisdiction is located at front and rear raised position, is testing
When, experiment straight tube piece main part is subject to edge effect smaller so that result of the test is more accurate reliable.
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
Brief description of the drawings
Fig. 1 is the main structure diagram of the embodiment of the present invention.
Fig. 2 is the overlooking the structure diagram of the embodiment of the present invention.
Fig. 3 is the enlarged drawing of part A in Fig. 2.
Embodiment
Embodiment
Fig. 1-3 show that a kind of embodiment of the invention is：A kind of shield tunnel construction duct piece connector test dress
The load maintainer put, including experiment straight tube piece 5, the L-shaped beam 1 at experimental rig both ends, the experiment dress above experiment straight tube piece 5
The top loading device put, the right side loading device for the experimental rig being connected with the L-shaped beam of right end；Positioned at 5 liang of straight tube piece of experiment
The L shaped plate 3 of side, L shaped plate 3 is superimposed on the middle part of the L-shaped beam 1 of experimental rig, and is realized and bolted by bolt, it is characterized in that：
The L shaped plate 3 is equipped with the vertical floor vertical with its transverse slat and riser to 3a, the rib of vertical connecting plate 4
Plate 4a inserts in vertical floor in 3a, and 3a is hinged with vertical floor；The end at 5 both ends of experiment straight tube piece is front and rear to be added
Width forms protrusion 5a, and connecting plate 4 tests the end of straight tube piece 5 by being fixed on through the bolt of raised 5a；
Front portion, the rear portion of the L-shaped beam 1 of 5 left end of experiment straight tube piece are embedded in inverted L-shaped block 2, and are bolted；Inverted L
The right side of shape block 2 and the bottom of left oil cylinder 6 bolt, and the cylinder rod of left oil cylinder 6 is bolted with the left end of tie-beam 10, tie-beam 10
Right end is bolted with testing the L-shaped beam 1 of 5 right end of straight tube piece.
Claims (1)
1. a kind of load maintainer of shield tunnel construction duct piece connector test device, including experiment straight tube piece (5), experimental rig two
The L-shaped beam (1) at end, the top loading device of the experimental rig above experiment straight tube piece (5), is connected with the L-shaped beam of right end
Experimental rig right side loading device；L shaped plate (3) positioned at experiment straight tube piece (5) both sides, L shaped plate (3) are superimposed on experiment dress
The middle part for the L-shaped beam (1) put, and realized and bolted by bolt, it is characterized in that：
The L shaped plate (3) is equipped with the vertical floor vertical with its transverse slat and riser to (3a), vertical connecting plate (4)
Floor (4a) inserts in vertical floor in (3a), and hinged to (3a) with vertical floor；Described experiment straight tube piece (5) both ends
Widen to be formed raised (5a) before and after end, connecting plate (4) tests the end of straight tube piece (5) by being fixed on through the bolt of raised (5a)
Portion；
Front portion, the rear portion for testing the L-shaped beam (1) of straight tube piece (5) left end are embedded in inverted L-shaped block (2), and are bolted；
The right side of inverted L-shaped block (2) is bolted with the bottom of left oil cylinder (6), the cylinder rod of left oil cylinder (6) and the left end bolt of tie-beam (10)
Connect, the L-shaped beam (1) of the right end and experiment straight tube piece (5) right end of tie-beam (10) bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711382547.2A CN107941601B (en) | 2017-12-20 | 2017-12-20 | Loading mechanism of segment joint test device of shield tunnel structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711382547.2A CN107941601B (en) | 2017-12-20 | 2017-12-20 | Loading mechanism of segment joint test device of shield tunnel structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107941601A true CN107941601A (en) | 2018-04-20 |
| CN107941601B CN107941601B (en) | 2024-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711382547.2A Active CN107941601B (en) | 2017-12-20 | 2017-12-20 | Loading mechanism of segment joint test device of shield tunnel structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107941601B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109374432A (en) * | 2018-12-13 | 2019-02-22 | 西南交通大学 | The moment of flexure alternating loading device and method of shield duct piece connector experiment on flexural behavior machine |
| CN109632470A (en) * | 2018-12-11 | 2019-04-16 | 上海市基础工程集团有限公司 | For section of jurisdiction plate connector mechanical property test device |
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| JP2009161987A (en) * | 2008-01-07 | 2009-07-23 | Ohbayashi Corp | Steel segment and construction method for shield tunnel |
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| CN102967503A (en) * | 2012-11-09 | 2013-03-13 | 济南时代试金试验机有限公司 | Clamping and moving device and method of cross beam of horizontal type tensile and compression testing machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109632470A (en) * | 2018-12-11 | 2019-04-16 | 上海市基础工程集团有限公司 | For section of jurisdiction plate connector mechanical property test device |
| CN109374432A (en) * | 2018-12-13 | 2019-02-22 | 西南交通大学 | The moment of flexure alternating loading device and method of shield duct piece connector experiment on flexural behavior machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107941601B (en) | 2024-05-28 |
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Effective date of registration: 20180927 Address after: 100031 West Chang'an Avenue, Xicheng District, Xicheng District, Beijing Applicant after: STATE GRID CORPORATION OF CHINA Applicant after: SOUTHWEST JIAOTONG University Address before: 610031 No. two, section 111, ring road, Chengdu, Sichuan, China Applicant before: Southwest Jiaotong University |
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