CN203629727U - Loess tunnel advanced large pipe shed stress monitoring strain gauge protection device - Google Patents
Loess tunnel advanced large pipe shed stress monitoring strain gauge protection device Download PDFInfo
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- CN203629727U CN203629727U CN201320738746.3U CN201320738746U CN203629727U CN 203629727 U CN203629727 U CN 203629727U CN 201320738746 U CN201320738746 U CN 201320738746U CN 203629727 U CN203629727 U CN 203629727U
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Abstract
The utility model discloses a loess tunnel advanced large pipe shed stress monitoring strain gauge protection device which pertains to the technical field of loess tunnel engineering construction. The strain gauge protection device is composed of four structure units including a stiffening hoop (1), thin-wall steel circular truncated cones (2), a thin-wall steel circular ring (3) and lead holes (5). The stiffening hoop (1) and the steel tube of an advanced large pipe shed (7) are firmly welded in an orthogonal manner. The tops of the thin-wall steel circular truncated cones (2) and the stiffening hoop (1) are firmly welded, and the line position is flush with stress sheets (4). The thin-wall steel circular ring (3) and the thin-wall steel circular truncated cones (2) are firmly welded. The lead holes (5) are formed in the outer side of the steel tube of the advanced large pipe shed (7) and the distance between the lead holes (5) and the thin-wall steel circular ring is 2cm. The device can be used to effectively improve the survival rate of strain gauges monitoring loess tunnel advanced large pipe shed mechanical characteristics, can be used to scientifically monitor the actual stress condition of the advanced large pipe shed during, and has the advantage of good engineering application value.
Description
Technical field
The utility model belongs to loess tunnel engineering construction technical field, is specifically related to a kind of loess tunnel Shed-pipe Advanced Support load-bearing monitor foil gauge protective device.
Background technology
China about 640,000 km that distributing
2loess area, for meeting the demand of social development to communications and transportation, increasing highway and railway will pass through Canal in Loess Area.Be subject to the restriction of topographic condition, the loess tunnel of building is more and more.For effectively control loess tunnel Portal Section surrouding rock deformation, prevent hole landslide, leading bassoon canopy is imported and exported section at Shallow-buried loess tunnel and is used widely.At present, due to pipe canopy and soil body interaction mechanism unclear, force-bearing situation is indefinite, pipe canopy parameter determine still in explore, the experience accumulation stage.For understanding the force-bearing situation of pipe canopy, find out loess tunnel Portal Section pipe canopy mechanical behavior, some experts and scholar have carried out relevant experimental study both at home and abroad.Engineering practices show in a large number, and the complicacy of loess tunnel pipe roof construction causes the foil gauge survival rate of monitoring pipe canopy force-bearing situation low, and monitoring result often can not meet the set goal.How effectively the foil gauge of monitoring for protection pipe canopy force-bearing situation, improves its survival rate and is perplexing engineering technical personnel always.Therefore,, on the basis in conjunction with the leading daguanpeng construction experience of loess tunnel, the utility model has provided the leading bassoon canopy of loess tunnel load-bearing monitor foil gauge protective device.
Summary of the invention
For the low problem of foil gauge survival rate of monitoring leading bassoon canopy force-bearing situation in current loess tunnel construction; the utility model provides the leading bassoon canopy of a kind of loess tunnel load-bearing monitor foil gauge protective device; correct this device that uses can solve foil gauge protection difficulty in leading daguanpeng construction; the technical barrier that survival rate is low; reach and improve foil gauge survival rate, the object of leading bassoon canopy actual loading situation in angles of science monitoring construction.
The leading bassoon canopy of loess tunnel described in the utility model load-bearing monitor foil gauge protective device, by putting more energy into, hoop 1, Steel Thin-Wall round platform 2, Steel Thin- Wall annulus 3 and 5 four structural units of fairlead form, the described hoop 1 of putting more energy into is made up of reinforcing bar, its internal diameter is identical with the outer diameter of steel pipes of leading bassoon canopy 7, put more energy into hoop 1 and the orthogonal firm welding of steel pipe of bassoon canopy 7 in advance; 2 top internal diameters of Steel Thin-Wall round platform are identical with the outer diameter of steel pipes of leading bassoon canopy 7,2 tops of Steel Thin-Wall round platform and the firmly welding of hoop 1 of putting more energy into, and its midline position flushes with stressed 4; Steel Thin-Wall annulus 3 internal diameters are identical with the outer diameter of steel pipes of leading bassoon canopy 7, and at the bottom of the platform of its external diameter and Steel Thin-Wall round platform 2, external diameter is identical, and firmly welds with Steel Thin-Wall round platform 2; It is upper and apart from Steel Thin-Wall annulus 2cm that described fairlead 5 is arranged at the steel pipe outside of leading bassoon canopy 7, and the normal of its hole plane is vertical with the center line of bassoon canopy 7 steel pipes in advance.
The leading bassoon canopy of loess tunnel described in the utility model load-bearing monitor foil gauge protective device, the described hoop 1 of putting more energy into is to be made up of the HPB300 reinforcing bar of diameter 6～10mm.
The leading bassoon canopy of loess tunnel described in the utility model load-bearing monitor foil gauge protective device, described Steel Thin-Wall round platform 2 wall thickness 6～10mm, Steel Thin-Wall round platform 2 height 6～8cm, the horizontal sextant angle of its bus and axial connecting line is 10-15 °.
The leading bassoon canopy of loess tunnel described in the utility model load-bearing monitor foil gauge protective device, described Steel Thin-Wall annulus 3 wall thickness 2～3mm.
The leading bassoon canopy of loess tunnel described in the utility model load-bearing monitor foil gauge protective device, described fairlead 5 diameters are 5～8mm.
The beneficial effects of the utility model: utility model is applied in the protection of the leading bassoon canopy of loess tunnel load-bearing monitor foil gauge, can improve the survival rate of foil gauge, and in angles of science monitoring construction, leading bassoon canopy actual loading situation, has good engineering using value.
Accompanying drawing explanation
Fig. 1 is the work schematic diagram of the leading bassoon canopy of loess tunnel load-bearing monitor foil gauge protective device, 1-put more energy into hoop, 2-Steel Thin-Wall round platform, 3-Steel Thin-Wall annulus, 4-foil gauge, 5-fairlead, 6-wire, the leading bassoon canopy of 7-;
Fig. 2 puts more energy into bind round 1 front elevation;
Fig. 3 is the front elevation of Steel Thin-Wall round platform 2;
Fig. 4 is the front elevation of Steel Thin-Wall annulus 3.
Embodiment
Below in conjunction with specific embodiment, the leading bassoon canopy of loess tunnel described in the utility model load-bearing monitor foil gauge protective device is described further, but protection domain of the present utility model is not limited to this.
Within the scope of 135 ° of the little clear distance loess tunnel Portal Section of certain shallow embedding highway arch, adopt the hot rolled seamless steel tube of diameter 108mm, wall thickness 6mm, pipe canopy length 30m, circumferential distance 0.4m.In pipe canopy length range, lay altogether 4 monitoring points, the hoop 1 of putting more energy into adopts diameter 6mmHPB300 reinforcement fabrication, and with the orthogonal firm welding of leading bassoon canopy 7 steel pipe; Steel Thin-Wall round platform 2 adopts wall thickness 8mm, height 8cm, and the horizontal sextant angle of bus and axial connecting line is 15 °, the platform top of Steel Thin-Wall round platform 2 and the firmly welding of hoop 1 of putting more energy into; Steel Thin-Wall annulus 3 adopts wall thickness 3mm, and the inside and outside footpath of Steel Thin-Wall annulus 3 is identical with external diameter at the bottom of 2 of leading bassoon canopy 7 outer diameter of steel pipes, Steel Thin-Wall round platform respectively; Fairlead 5 is arranged at that the steel pipe outside of leading bassoon canopy 7 is upper and apart from Steel Thin-Wall annulus 2cm, diameter is 5mm.The cavity forming between Steel Thin-Wall round platform 2 and Steel Thin-Wall annulus 3 and leading bassoon canopy 7 steel pipes can effectively protect foil gauge 4 not to be damaged, and the wire 6 of foil gauge 4 can be drawn from leading bassoon canopy 7 steel pipe inner walls through through wires hole 5.Adopt the force-bearing situation of the leading bassoon canopy of this device monitoring, foil gauge 4 and wire 6 thereof can be effectively protected, and the survival rate of foil gauge 4 can improve greatly, and its Monitoring Data can rationally reflect the actual loading situation of pipe canopy, have good engineering using value.
Within the scope of 135 ° of certain buried highway loess multiple arch Portal Section arch, adopt the hot rolled seamless steel tube of diameter 127mm, wall thickness 6mm, pipe canopy length 35m, circumferential distance 0.3m.In pipe canopy length range, lay altogether 4 monitoring points, the device hoop 1 of putting more energy into adopts diameter 8mmHPB300 reinforcement fabrication, and with the orthogonal firm welding of leading bassoon boron steel pipe; Steel Thin-Wall round platform 2 adopts wall thickness 6mm, height 6cm, and the horizontal sextant angle of bus and axial connecting line is 12 °, the platform top of Steel Thin-Wall round platform 2 and the firmly welding of hoop 1 of putting more energy into; Steel Thin-Wall annulus 3 adopts wall thickness 2mm, and the inside and outside footpath of Steel Thin-Wall annulus 3 is identical with external diameter at the bottom of 2 of leading bassoon canopy 7 outer diameter of steel pipes, Steel Thin-Wall round platform respectively; Fairlead 5 is arranged at that the steel pipe outside of leading bassoon canopy 7 is upper and apart from Steel Thin-Wall annulus 2cm, diameter is 6mm.The cavity forming between Steel Thin-Wall round platform 2 and Steel Thin-Wall annulus 3 and leading bassoon canopy 7 steel pipes can effectively protect foil gauge 4 not to be damaged, and the wire 6 of foil gauge 4 can be drawn from leading bassoon canopy 7 steel pipe inner walls through through wires hole 5.Adopt the force-bearing situation of the leading bassoon canopy of this device monitoring, foil gauge 4 and wire 6 thereof can be effectively protected, and the survival rate of foil gauge 4 can improve greatly, and its Monitoring Data can rationally reflect the actual loading situation of pipe canopy, have good engineering using value.
Claims (5)
1. the leading bassoon canopy of a loess tunnel load-bearing monitor foil gauge protective device, formed by the hoop (1) of putting more energy into, Steel Thin-Wall round platform (2), Steel Thin-Wall annulus (3) and (5) four structural units of fairlead, it is characterized in that, the described hoop (1) of putting more energy into is made up of reinforcing bar, its internal diameter is identical with the outer diameter of steel pipes of leading bassoon canopy (7), put more energy into hoop (1) and the orthogonal firm welding of steel pipe of bassoon canopy (7) in advance; Steel Thin-Wall round platform (2) platform top internal diameter is identical with the outer diameter of steel pipes of leading bassoon canopy (7), and firmly weld with the hoop (1) of putting more energy on Steel Thin-Wall round platform (2) platform top, and its midline position flushes with stressed (4); Steel Thin-Wall annulus (3) internal diameter is identical with the outer diameter of steel pipes of leading bassoon canopy (7), and at the bottom of the platform of its external diameter and Steel Thin-Wall round platform (2), external diameter is identical, and firmly welds with Steel Thin-Wall round platform (2); Described fairlead (5) is arranged at the steel pipe outside of leading bassoon canopy (7) and apart from Steel Thin-Wall annulus 2cm place, the normal of its hole plane is vertical with the center line of leading bassoon canopy (7) steel pipe.
2. the leading bassoon canopy of a kind of loess tunnel according to claim 1 load-bearing monitor foil gauge protective device, is characterized in that, the described hoop (1) of putting more energy into is to be made up of the HPB300 reinforcing bar of diameter 6～10mm.
3. the leading bassoon canopy of a kind of loess tunnel according to claim 1 load-bearing monitor foil gauge protective device; it is characterized in that; described Steel Thin-Wall round platform (2) wall thickness 6～10mm, Steel Thin-Wall round platform (2) height 6～8cm, the horizontal sextant angle of its bus and axial connecting line is 10-15 °.
4. the leading bassoon canopy of a kind of loess tunnel according to claim 1 load-bearing monitor foil gauge protective device, is characterized in that, described Steel Thin-Wall annulus (3) wall thickness 2～3mm.
5. the leading bassoon canopy of a kind of loess tunnel according to claim 1 load-bearing monitor foil gauge protective device, is characterized in that, described fairlead (5) diameter is 5～8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320738746.3U CN203629727U (en) | 2013-11-20 | 2013-11-20 | Loess tunnel advanced large pipe shed stress monitoring strain gauge protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320738746.3U CN203629727U (en) | 2013-11-20 | 2013-11-20 | Loess tunnel advanced large pipe shed stress monitoring strain gauge protection device |
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| Publication Number | Publication Date |
|---|---|
| CN203629727U true CN203629727U (en) | 2014-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320738746.3U Expired - Fee Related CN203629727U (en) | 2013-11-20 | 2013-11-20 | Loess tunnel advanced large pipe shed stress monitoring strain gauge protection device |
Country Status (1)
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| CN (1) | CN203629727U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108088600A (en) * | 2017-12-08 | 2018-05-29 | 中煤建工集团有限公司 | A kind of load-bearing monitor method suitable for non-excavation type pipe canopy |
-
2013
- 2013-11-20 CN CN201320738746.3U patent/CN203629727U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108088600A (en) * | 2017-12-08 | 2018-05-29 | 中煤建工集团有限公司 | A kind of load-bearing monitor method suitable for non-excavation type pipe canopy |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140604 Termination date: 20181120 |
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| CF01 | Termination of patent right due to non-payment of annual fee |