CN103471796B - Tunnel Cast-in-place concrete lining anti-seismic performance test methods - Google Patents
Tunnel Cast-in-place concrete lining anti-seismic performance test methods Download PDFInfo
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- CN103471796B CN103471796B CN201310425741.XA CN201310425741A CN103471796B CN 103471796 B CN103471796 B CN 103471796B CN 201310425741 A CN201310425741 A CN 201310425741A CN 103471796 B CN103471796 B CN 103471796B
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Abstract
The invention discloses a kind of tunnel Cast-in-place concrete lining anti-seismic performance test methods, it is characterized in that comprising the following steps: 1. make Cast-in-place concrete lining cutting local test specimen; 2. Cast-in-place concrete lining cutting local test specimen being installed to special test specimen loads in box; 3. by static loading system, box is loaded to test specimen and apply static load; 4. above-mentioned experimental provision is installed to vertically input vibrations load on electro-hydraulic servo drive-type earthquake simulation shaking table; 5. successively shed vibrations load and dead load, the destruction situation of record analysis test specimen, thus assess its anti-seismic performance.The present invention simulates the actual forced status of Cast-in-place concrete lining cutting by special load maintainer, in conjunction with existing earthquake simulation shaking table, anti-seismic performance test is carried out to its local test specimen, the shock-resistance features of circle or similar round tunnel Cast-in-place concrete liner structure entirety can be reflected preferably.The present invention adopts Cast-in-place concrete lining cutting local test specimen to test, and greatly saves experimental cost relative to tunneling boring experiment.
Description
Technical field
The present invention relates to the research of tunnel support structure anti-seismic performance, particularly relate to a kind of tunnel Cast-in-place concrete lining anti-seismic performance test methods.
Background technology
Along with the enforcement of strategy to develop western regions, the Tunnel Engineering in a large amount of highway, railway and construction of hydropower facilities will be built near active fault and high intensity Zone.Such as, the existing railway tunnel of China seat up to ten thousand, wherein has nearly thousand to be positioned at strong earthquake area, and its seismic seeurity is the problem that project planner is concerned about very much.
In order to reduce seismic disaster, the anti-seismic performance of supporting construction should be taken into full account when tunnel support designs.Cast-in-place concrete lining cutting, as the conventional supporting construction of underground works, often to be peeled off, the phenomenon such as crackle and fall damage under earthquake load impact.In order to prevent the generation of these accidents, need reasonably to test the anti-seismic performance of Cast-in-place concrete lining cutting.
Due under condition at the scene, vibrations load cannot artificially apply, so can not test its anti-seismic performance at the scene; Room model test by experiment, ratio of similitude is difficult to determine, and size effect is clearly, can not as the method detecting anti-seismic performance; Room prototype test by experiment, cost is higher, and faces boundary condition equally and be difficult to meet, and vibrations load is difficult to the shortcoming applied.
First rational method of testing wants the arc shell design feature that can embody Cast-in-place concrete lining cutting; Secondly, should be able to make its stress and field condition same or similar, namely under pressure from surrounding rock effect, lining cutting reaches at high-stress state and keeps certain hour, to be deformedly stablizes after-applied vibrations load, with the impact of Study of Seismic on tunnel-liner.Owing to being subject to the restriction of various condition, also do not have a kind of experimental technique to meet above-mentioned requirements at present, be therefore difficult to the anti-seismic performance of directly testing Cast-in-place concrete lining cutting.
Summary of the invention
The object of the invention is for overcoming the deficiencies in the prior art, a kind of tunnel Cast-in-place concrete lining anti-seismic performance test methods is provided.
Its technical solution is:
A kind of tunnel Cast-in-place concrete lining anti-seismic performance test methods, is characterized in that comprising the following steps:
make Cast-in-place concrete lining cutting local test specimen, and be coated with lubricant in its side, to reduce the friction force be subject in its experimentation; Described Cast-in-place concrete lining cutting local test specimen, upper and lower surface is coaxial circles cambered surface, and the extension line of left and right side passes through the axis of above-mentioned arc surface, and front and back sides is perpendicular to surface level; Its essence is the similar trapezoidal test block formed by cutting tunnel, two faces Cast-in-place concrete lining cutting of tunnel axis; The concrete method for making of Cast-in-place concrete lining cutting local test specimen comprises the following two kinds: a. makes the mould of respective shapes, copies site operation situation assembling reinforcement placing concrete, the demoulding after maintenance certain hour under class field condition, then by smooth for its surface finish; B. extracted the test specimen of general shape by cutting machine at tunnel construction site, be processed into standard shape by instruments such as stone mills and polish smooth;
cast-in-place concrete lining cutting local test specimen is installed to test specimen to be loaded in box; Described test specimen loads box and comprises U-type groove, triangular prism cushion block, loads cushion block and side shield; U-type groove is one-piece construction, comprises base plate and two sidewalls; Triangular prism cushion block two right-angle surface contact with side wall inner surfaces with the base plate of U-type groove respectively, its inclination angle of inclined plane with water concrete-liner local test specimen two inclination angle of inclined plane and mate; Loading cushion block lower surface is that circular arc contacts with Cast-in-place concrete lining cutting local test specimen upper surface, leaves space, extrude both preventing in loading procedure between the inclined-plane of loading cushion block left and right side and triangular prism cushion block; Side shield is fixed on the both sides, front and back of U-type groove, and its inside surface contacts with the front and rear surfaces of Cast-in-place concrete lining cutting local test specimen, and effect is to prevent the test specimen generation axial deformation of Cast-in-place concrete lining cutting local, to meet the requirement of plane strain state;
by static loading system, box is loaded to test specimen and apply static load, make test specimen meet the requirements of stress state, to simulate the effect of pressure from surrounding rock to Cast-in-place concrete lining cutting; Described static loading system comprises base, lifting jack, counter-force backing plate, counter-force reinforcing bar and supporting guide, lifting jack is for applying static load, the counter-force backing plate left and right sides is respectively equipped with the through hole for connecting counter-force reinforcing bar, counter-force reinforcing bar one end is fixed on base, and the other end is fixed on counter-force backing plate; Supporting guide is fixed on base, and its effect holds test specimen on pretreatment to load box, prevents it from deflection occurring in experimentation;
above-mentioned experimental provision is installed to vertically on electro-hydraulic servo drive-type earthquake simulation shaking table, the vibrations load of input assigned frequency, amplitude and waveform; By static stress and distortion measuring unit, as strain gauge and strain transducer etc., measure test specimen static stress and distortion situation in experimentation, to analyze its dynamic response characteristics;
successively shed vibrations load and dead load, dismantle test specimen and load box and take out test specimen, the destruction situation of record analysis test specimen, thus assess its anti-seismic performance.
Principle of the present invention is:
The tunnel of current construction adopts circular or similar round section greatly; When country rock horizontal pressure force and vertical pressure difference little, stressed, the deformation and failure problem of tunnel Cast-in-place concrete lining cutting can be similar to thinks axisymmetric problem, gets its part and carries out testing and can reflect the character of Cast-in-place concrete lining cutting entirety.
The present invention utilizes special test specimen to load box and static loading system, in conjunction with existing earthquake simulation shaking table, on the basis of arc shell design feature considering circular or the Cast-in-place concrete lining cutting of similar round tunnel, anti-seismic performance test is carried out to its local test specimen, can the shock-resistance features of reflect structure entirety preferably.
Accompanying drawing explanation
Below in conjunction with accompanying drawing and embodiment, the invention will be further described:
Fig. 1 is mechanics principle figure of the present invention;
Fig. 2 is agent structure schematic diagram of the present invention.
Embodiment
By reference to the accompanying drawings 1, foundation of the present invention is, the tunnel of current construction adopts circular or similar round section greatly, when country rock horizontal pressure force and vertical pressure difference little, stressed, the deformation and failure problem of tunnel Cast-in-place concrete lining cutting can be similar to thinks axisymmetric problem, gets its part and carries out testing the character that can reflect Cast-in-place concrete lining cutting entirety.
By reference to the accompanying drawings 2, a kind of tunnel Cast-in-place concrete lining anti-seismic performance test methods, is characterized in that comprising the following steps:
make Cast-in-place concrete lining cutting local test specimen 1, and be coated with lubricant in its side, to reduce the friction force be subject in its experimentation; Described Cast-in-place concrete lining cutting local test specimen, upper and lower surface is coaxial circles cambered surface, and the extension line of left and right side passes through the axis of above-mentioned arc surface, and front and back sides is perpendicular to surface level; Its essence is the similar trapezoidal test block formed by cutting tunnel, two faces Cast-in-place concrete lining cutting of tunnel axis; The concrete method for making of Cast-in-place concrete lining cutting local test specimen comprises the following two kinds: a. makes the mould of respective shapes, copies site operation situation assembling reinforcement placing concrete, the demoulding after maintenance certain hour under class field condition, then by smooth for its surface finish; B. extracted the test specimen of general shape by cutting machine at tunnel construction site, be processed into standard shape by instruments such as stone mills and polish smooth.
cast-in-place concrete lining cutting local test specimen 1 is installed to test specimen to be loaded in box; Described test specimen loads box and comprises U-type groove 2, triangular prism cushion block 3, loads cushion block 4 and side shield; U-type groove 2 is one-piece construction, comprises base plate and two sidewalls; Triangular prism cushion block 3 two right-angle surface contact with side wall inner surfaces with the base plate of U-type groove 2 respectively, its inclination angle of inclined plane with water concrete-liner local test specimen 1 two inclination angle of inclined plane and mate; Loading cushion block 4 lower surface is that circular arc contacts with Cast-in-place concrete lining cutting local test specimen 1 upper surface, leaves space, extrude both preventing in loading procedure between the inclined-plane of loading cushion block 4 left and right side and triangular prism cushion block 3; Side shield is fixed on the both sides, front and back of U-type groove, and its inside surface contacts with the front and rear surfaces of Cast-in-place concrete lining cutting local test specimen, and effect is to prevent the test specimen generation axial deformation of Cast-in-place concrete lining cutting local, to meet the requirement of plane strain state.
by static loading system, box is loaded to test specimen and apply static load, make test specimen meet the requirements of stress state, to simulate the effect of pressure from surrounding rock to Cast-in-place concrete lining cutting; Described static loading system comprises base 5, lifting jack 6, counter-force backing plate 7, counter-force reinforcing bar 8 and supporting guide 9, lifting jack 6 is for applying static load, counter-force backing plate 7 left and right sides is respectively equipped with the through hole for connecting counter-force reinforcing bar 8, counter-force reinforcing bar 8 one end is fixed on base 5, and the other end is fixed on counter-force backing plate 7; Supporting guide 9 is fixed on base, and its effect holds test specimen on pretreatment to load box, prevents it from deflection occurring in experimentation.
above-mentioned experimental provision is installed to vertically on electro-hydraulic servo drive-type earthquake simulation shaking table 10, the vibrations load of input assigned frequency, amplitude and waveform; By static stress and distortion measuring unit, as strain gauge and strain transducer etc., measure test specimen static stress and distortion situation in experimentation, to analyze its dynamic response characteristics.
successively shed vibrations load and dead load, dismantle test specimen and load box and take out test specimen, the destruction situation of record analysis test specimen, thus assess its anti-seismic performance.
The above embodiment, the just one of the embodiment that the present invention is more preferably concrete, the usual change that those skilled in the art carries out within the scope of technical solution of the present invention and replacement all should be included in protection scope of the present invention.
Claims (1)
1. a tunnel Cast-in-place concrete lining anti-seismic performance test methods, is characterized in that, comprise the following steps:
The first step: make Cast-in-place concrete lining cutting local test specimen, and be coated with lubricant in its side, to reduce the friction force be subject in its experimentation; Described Cast-in-place concrete lining cutting local test specimen, upper and lower surface is coaxial circles cambered surface, and the extension line of left and right side passes through the axis of above-mentioned arc surface, and front and back sides is perpendicular to surface level; The concrete method for making of Cast-in-place concrete lining cutting local test specimen comprises the following two kinds: a. makes the mould of respective shapes, copies site operation situation assembling reinforcement placing concrete, the demoulding after maintenance certain hour under class field condition, then by smooth for its surface finish; B. extracted the test specimen of general shape by cutting machine at tunnel construction site, be processed into standard shape by stone mill instrument and polish smooth;
Second step: Cast-in-place concrete lining cutting local test specimen is installed to test specimen and loads in box; Described test specimen loads box and comprises U-type groove, triangular prism cushion block, loads cushion block and side shield; U-type groove is one-piece construction, comprises base plate and two sidewalls; Triangular prism cushion block two right-angle surface contact with side wall inner surfaces with the base plate of U-type groove respectively, and its inclination angle of inclined plane and Cast-in-place concrete lining cutting local test specimen two inclination angle of inclined plane mate; Loading cushion block lower surface is circular arc, leaves space between the inclined-plane of loading cushion block left and right side and triangular prism cushion block; Side shield is fixed on the both sides, front and back of U-type groove;
3rd step: load box by static loading system to test specimen and apply static load, make test specimen meet the requirements of stress state, to simulate the effect of pressure from surrounding rock to Cast-in-place concrete lining cutting local test specimen; Described static loading system comprises base, lifting jack, counter-force backing plate, counter-force reinforcing bar and supporting guide;
4th step: above-mentioned test specimen loading box and static loading system are installed to vertically on electro-hydraulic servo drive-type earthquake simulation shaking table, the vibrations load of input assigned frequency, amplitude and waveform; By static stress and distortion measuring unit, as strain gauge and strain transducer, measure test specimen static stress and distortion situation in experimentation, to analyze its dynamic response characteristics;
5th step: successively shed vibrations load and dead load, dismantles test specimen and loads box and take out test specimen, the destruction situation of record analysis test specimen, thus assess its anti-seismic performance.
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104458177B (en) * | 2014-12-17 | 2017-02-22 | 福州大学 | Earthquake simulation shaking table test bearing model counterweight device and construction method thereof |
| CN104502137A (en) * | 2015-01-16 | 2015-04-08 | 招商局重庆交通科研设计院有限公司 | Tunnel lining structure uniform load test system and sealing method thereof |
| CN105675840B (en) * | 2015-12-31 | 2017-05-31 | 中国矿业大学(北京) | Workings subject to dy namic pressure supporting physical model test device and method |
| CN106959338A (en) * | 2017-03-10 | 2017-07-18 | 西南交通大学 | A kind of dynamic response analogue means of multi-level underground space structure and country rock |
| CN107132034B (en) * | 2017-05-09 | 2019-06-07 | 昆明理工大学 | A kind of underground structure pseudo static testing device and method |
| CN109959509B (en) * | 2019-05-14 | 2021-04-09 | 深圳市置华机电设备有限公司 | Anti-seismic performance detection device for anti-seismic support and application method of anti-seismic performance detection device |
| CN112710447B (en) * | 2020-12-29 | 2023-07-25 | 内蒙古黄陶勒盖煤炭有限责任公司 | Underground coal mine safety protection support evaluation system |
| CN114486140B (en) * | 2022-02-09 | 2023-08-04 | 广州大学 | Can simulate no soil box tunnel shaking table test device of quiet dynamic boundary |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101131342A (en) * | 2006-08-25 | 2008-02-27 | 同济大学 | Tunnel lining component high-temperature mechanical property testing system |
| CN102004054A (en) * | 2010-09-21 | 2011-04-06 | 同济大学 | Three-way loading mechanical property test system of multifunctional lining segment joint |
| CN102645310A (en) * | 2012-05-08 | 2012-08-22 | 同济大学 | Complete set of test method of soft soil iron structure vibration table |
| CN202614601U (en) * | 2012-06-01 | 2012-12-19 | 西北工业大学 | Clamp for testing high-temperature compressive strength of composite material |
| CN103162981A (en) * | 2013-02-01 | 2013-06-19 | 西南交通大学 | Shield tunnel segmental lining similar test model |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4104766B2 (en) * | 1999-02-22 | 2008-06-18 | 株式会社奥村組 | Loading test method for tunnel lining body |
| JP5636672B2 (en) * | 2009-12-25 | 2014-12-10 | 東電設計株式会社 | Tunnel lining deformation monitoring method |
-
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101131342A (en) * | 2006-08-25 | 2008-02-27 | 同济大学 | Tunnel lining component high-temperature mechanical property testing system |
| CN102004054A (en) * | 2010-09-21 | 2011-04-06 | 同济大学 | Three-way loading mechanical property test system of multifunctional lining segment joint |
| CN102645310A (en) * | 2012-05-08 | 2012-08-22 | 同济大学 | Complete set of test method of soft soil iron structure vibration table |
| CN202614601U (en) * | 2012-06-01 | 2012-12-19 | 西北工业大学 | Clamp for testing high-temperature compressive strength of composite material |
| CN103162981A (en) * | 2013-02-01 | 2013-06-19 | 西南交通大学 | Shield tunnel segmental lining similar test model |
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