CN204007470U - A kind of shield tunnel section radius-of-curvature proving installation - Google Patents
A kind of shield tunnel section radius-of-curvature proving installation Download PDFInfo
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- CN204007470U CN204007470U CN201420436971.6U CN201420436971U CN204007470U CN 204007470 U CN204007470 U CN 204007470U CN 201420436971 U CN201420436971 U CN 201420436971U CN 204007470 U CN204007470 U CN 204007470U
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Abstract
A kind of shield tunnel section radius-of-curvature proving installation, it is characterized in that: it comprises test pole (1), left measurement haptic element (2), right measurement haptic element (3), measurement instrument (4) and balance bubble (5), and left measurement haptic element (2) and right measurement haptic element (3) are fixedly equipped with respectively in described test pole (1) two ends, left and right, in test pole (1), be positioned at left measurement haptic element (2) and measurement instrument (4) is equipped with in right measurement haptic element (3) position, middle, the chaining pin (401) of measurement instrument (4) can slide up and down, chaining pin (401) slide displacement value can read by measurement instrument (4), measure the upper position near measurement instrument (4) of pole (1) and be provided with balance bubble (5), balance bubble (5) can be used for judging that whether measurement pole (1) and line to be measured be perpendicular or parallel, described test instrumentation (4) installation site is adjustable up and down.The utility model utilizes balance bubble to judge proving installation and the consistent property of testing position, can calculate the curvature of shield tunnel section by test data, and whole device construction is simple, easy to operate.
Description
Technical field
The utility model belongs to engineering Inspection Technique field, specifically just relates to a kind of device for the test of shield tunnel section radius-of-curvature.
Background technology
Be accompanied by the development of Large-sized Communication engineering, especially the fast development of city track traffic engineering, tunneling shield technology is used widely, tunneling shield is the Fully-mechanized construction method of one in subsurface excavation method construction, it is that shield machine tool is advanced in ground, prevent toward caving in tunnel by shield structure shell and section of jurisdiction supporting surrounding country rock, carry out soil excavation in excavation face front with topping machanism simultaneously, by being unearthed, machinery transports outside hole, by the lifting jack jacking of pressurizeing at rear portion, and assembled precast concrete section of jurisdiction, form a kind of mechanized construction method of tunnel structure.Shield construction is a very complicated engineering process, and its impact and operating technique link on surrounding environment is closely related.Shield construction causes that the detail of Stratum Loss and the impact on adjacent structure and construction is undivided.Therefore the principal element that, shield structure theoretical analysis is accurately held shield-tunneling construction just can draw the result tallying with the actual situation.And the geomery of shield tunnel section is to analyze the stress of shield tunnel construction and the Main Basis of safe condition.Current existing tunnel structure section proterties mainly adopts total powerstation to measure, and it is large that measuring accuracy is affected by measurement environment, measuring point layout and surface smoothness etc., and measuring point needs special setting, and field conduct test must be to measure professional.
Chinese patent CN1318730A discloses the radius-of-curvature of any concave and convex surface of a kind of accurate measurement and the surveying instrument of curvature, comprise measurement bay, survey pin and instrument, it is surveyed pin and adopts three of left, center, right to survey pin, middle measuring foot is contained in the center pit of the link that stacks together and measurement bay by sleeve pipe, and is connected with instrument.Instrument is fixed on sleeve pipe and measurement bay by gauge stand, middle measuring foot can slide in sleeve pipe, and is locked by set nut, and the upper end that pin is surveyed in left and right is separately fixed on intermeshing duplicate gear, duplicate gear is by being contained on link by gear shaft, and link is compressed by measurement bay.This patented technology is disclosed is modern processing field, its measurement be converted products, need the data measured more, and the cross-sectional area of shield tunnel is larger, can measurement data limited, cause existing measurement mechanism not to be suitable for the measurement of the section curvature of shield tunnel.
Utility model content
The purpose of this utility model: cannot be used for the technological deficiency of the curvature test of shield tunnel section for existing proving installation, a kind of shield tunnel section radius-of-curvature proving installation is provided, whole device construction is simple, easy to operate.
Technical scheme
In order to realize above-mentioned technical purpose, the utility model designs a kind of shield tunnel section radius-of-curvature proving installation, it is characterized in that: it comprises test pole, left measurement haptic element, right measurement haptic element, measurement instrument and balance bubble, and left measurement haptic element and right measurement haptic element are fixedly equipped with respectively in two ends, described test pole left and right; Be positioned at left measurement haptic element on pole and measurement instrument is equipped with in position, right measurement haptic element middle in test, the chaining pin of measurement instrument can slide up and down, chaining pin slide displacement value can read by measurement instrument, measure the upper position near measurement instrument of pole and be provided with balance bubble, balance bubble can be used for judging measure pole and line to be measured whether perpendicular or parallel, described test instrumentation installation site is adjustable up and down.
Further, described test instrumentation is dial gauge, and dial gauge installation site can be adjusted up and down.
Further, described left measurement haptic element and right measurement haptic element distance are 700mm or 1000mm; Left and right haptic element distance is the device of 700mm, can test radius-of-curvature in 1.5m～5m scope; Left and right haptic element distance is the device of 1000mm, can test radius-of-curvature in 3m～9m scope.
Further, described balance bubble distance meter table is 50～100mm.
The using method of above-mentioned shield tunnel section radius-of-curvature proving installation, is characterized in that, it comprises following step:
(1) the shield tunnel cross section diameter of measuring as required and concavo-convex test surfaces are adjusted the setting height(from bottom) of test instrumentation, make it for concave surface or the test of convex curvature radius;
(2) utilize calibrated ruler to calibrate proving installation, the primary data of read test device, comprises the initial reading s0 of test instrumentation, and the chaining pin that measures left measurement haptic element and right measurement haptic element and surveying instrument is apart from being respectively l1, l2;
(3) lay proving installation, test pole by adjustment and survey pin and survey the balance bubble that the position between the p-wire on pin and shield tunnel section to be measured makes to test on pole and reach between two parties, thus definite proving installation riding position;
(4) read the reading s1 of measurement instrument, calculate the now measured value s=|s1-s0| of measuring point;
(5) formula according to the following formula:
Calculate the radius-of-curvature r at shield tunnel test position.
Further, in described step (2), utilize horizontal alignment chi to calibrate proving installation, aim at the alignment surface of horizontal alignment chi by the chaining pin of testing tool, left measurement haptic element and right measurement haptic element, record the survey measurements of surveying instrument, continuously calibration measurement is no less than 3 times, and in surveying instrument, reading is less than 0.02mm and just reaches alignment requirements.
Beneficial effect
The shield tunnel section radius-of-curvature proving installation that the utility model provides, utilize balance bubble to judge proving installation and the consistent property of testing position, can calculate the curvature of shield tunnel section by test data, whole device construction is simple, easy to operate.
Brief description of the drawings
Accompanying drawing 1 is vertical view of the present utility model.
Accompanying drawing 2 is front views of the present utility model.
Accompanying drawing 3 is step 2 alignment schematic diagram in the utility model.
Accompanying drawing 4 is in the utility model, in step 3, to test schematic diagram.
Accompanying drawing 5 is the utility model mean curvature radius calculation principle schematic.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described further.
Embodiment
As shown in attached Fig. 1 and 2, a kind of shield tunnel section radius-of-curvature proving installation, it is characterized in that: it comprises test pole 1, left measurement haptic element 2, right measurement haptic element 3, measurement instrument 4 and balance bubble 5, and left measurement haptic element 2 and right measurement haptic element 3 are fixedly equipped with respectively in described test pole 1 two ends, left and right; Be positioned at left measurement haptic element 2 on pole 1 and measurement instrument 4 is equipped with in right measurement haptic element 3 positions, middle in test, the chaining pin 401 of measurement instrument 4 can slide up and down, chaining pin 401 slide displacement values can read by measurement instrument 4, measure the position near measurement instrument 4 on pole 1 and be provided with balance bubble 5, balance bubble 5 can be used for judging that whether measurement pole 1 is perpendicular or parallel with line to be measured, and described test instrumentation 4 installation sites are adjustable up and down.
Described test instrumentation 4 is dial gauge, and dial gauge installation site can be adjusted up and down.
Described left measurement haptic element 2 and right measurement haptic element 3 distances are 700mm or 1000mm.Left and right haptic element distance is the device of 700mm, can test radius-of-curvature in 1.5m～5m scope; Left and right haptic element distance is the device of 1000mm, can test radius-of-curvature in 3m～9m scope.
Described balance bubble 5 range observation instrument 4 are 50～100mm.
The using method of above-mentioned shield tunnel section radius-of-curvature proving installation, is characterized in that, it comprises following step:
The first step, the shield tunnel cross section diameter of measuring as required and concavo-convex test surfaces are adjusted the setting height(from bottom) of test instrumentation, make it for concave surface or the test of convex curvature radius;
Second step, as shown in Figure 3, utilize calibrated ruler to calibrate proving installation, the primary data of read test device, comprise the initial reading s0 of test instrumentation 4, and the chaining pin 401 that measures left measurement haptic element 2 and right measurement haptic element 3 and surveying instrument is apart from being respectively l1, l2;
The 3rd step, as shown in Figure 4, lay proving installation, test pole by adjustment and survey pin 2 and survey the balance bubble 5 that the position between the p-wire on pin 3 and shield tunnel section to be measured makes to test on pole and reach between two parties, thus definite proving installation riding position;
The 4th step, reads the reading s1 of measurement instrument 4, calculates the now measured value s=|s1-s0| of measuring point;
The 5th step, as shown in Figure 5, formula according to the following formula:
Calculate the radius-of-curvature r at shield tunnel test position.
Further, described second step, utilize horizontal alignment chi to calibrate proving installation, the alignment surface of aiming at horizontal alignment chi by the chaining pin 401 of testing tool, left measurement haptic element 2 and right measurement haptic element 3, record the survey measurements of surveying instrument, continuously calibration measurement is no less than 3 times, and in surveying instrument, reading is less than 0.02mm and just reaches alignment requirements.
The utility model is based on shield tunnel project construction experiences, to the measurement of shield tunnel section configuration size, for analysis, evaluation shield tunnel construction stress and safe condition provide foundation.Measurement mechanism provided by the utility model, not only for the measurement of shield tunnel section configuration size, also can be used for pipe-jacking project structure section or the test of duct piece steel mould tool radius-of-curvature, according to the measurement of the definite section configuration radius-of-curvature of this method, further can determine tunnel cross-section ovality, section convergency value, junction, section of jurisdiction opening angle etc., in order to complete, the internal force of shield tunnel calculates and reparation provides foundation, is also the effective ways that moulding shield tunnel shape is checked and accepted.Only need the several numerical value of simple test just can obtain the curvature of shield tunnel section, whole device construction is simple, easy to operate.
Claims (4)
1. a shield tunnel section radius-of-curvature proving installation, it is characterized in that: it comprises test pole (1), left measurement haptic element (2), right measurement haptic element (3), measurement instrument (4) and balance bubble (5), left measurement haptic element (2) and right measurement haptic element (3) are fixedly equipped with respectively in described test pole (1) two ends, left and right, in test pole (1), be positioned at left measurement haptic element (2) and measurement instrument (4) is equipped with in right measurement haptic element (3) position, middle, the chaining pin (401) of measurement instrument (4) can slide up and down, chaining pin (401) slide displacement value can read by measurement instrument (4), measure the upper position near measurement instrument (4) of pole (1) and be provided with balance bubble (5), balance bubble (5) can be used for judging that whether measurement pole (1) and line to be measured be perpendicular or parallel, described test instrumentation (4) installation site is adjustable up and down.
2. a kind of shield tunnel section radius-of-curvature proving installation as claimed in claim 1, is characterized in that: described test instrumentation (4) is dial gauge, and dial gauge installation site can be adjusted up and down.
3. a kind of shield tunnel section radius-of-curvature proving installation as claimed in claim 1, is characterized in that: described left measurement haptic element (2) and right measurement haptic element (3) distance are 700mm or 1000mm.
4. a kind of shield tunnel section radius-of-curvature proving installation as claimed in claim 1, is characterized in that: described balance bubble (5) range observation instrument (4) is 50～100mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420436971.6U CN204007470U (en) | 2014-08-04 | 2014-08-04 | A kind of shield tunnel section radius-of-curvature proving installation |
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| CN201420436971.6U CN204007470U (en) | 2014-08-04 | 2014-08-04 | A kind of shield tunnel section radius-of-curvature proving installation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104236430A (en) * | 2014-08-04 | 2014-12-24 | 上海建科工程咨询有限公司 | Shield tunnel section curvature radius testing device and application method thereof |
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- 2014-08-04 CN CN201420436971.6U patent/CN204007470U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104236430A (en) * | 2014-08-04 | 2014-12-24 | 上海建科工程咨询有限公司 | Shield tunnel section curvature radius testing device and application method thereof |
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