CN207701150U - A kind of contractibility steelframe supporting construction - Google Patents
A kind of contractibility steelframe supporting construction Download PDFInfo
- Publication number
- CN207701150U CN207701150U CN201721783573.1U CN201721783573U CN207701150U CN 207701150 U CN207701150 U CN 207701150U CN 201721783573 U CN201721783573 U CN 201721783573U CN 207701150 U CN207701150 U CN 207701150U
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- CN
- China
- Prior art keywords
- steel
- steel sleeve
- supporting construction
- contractibility
- deformation
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- Expired - Fee Related
Links
- 230000008093 supporting effect Effects 0.000 title claims abstract description 37
- 238000010276 construction Methods 0.000 title claims abstract description 27
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 54
- 239000010959 steel Substances 0.000 claims abstract description 54
- 239000011381 foam concrete Substances 0.000 claims abstract description 12
- 238000007569 slipcasting Methods 0.000 claims description 6
- 239000011435 rock Substances 0.000 abstract description 50
- 230000000694 effects Effects 0.000 abstract description 6
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Abstract
The utility model discloses a kind of contractibility steelframe supporting construction, the i-beam frame arranged in opposite directions including a pair, the i-beam frame opposite end is connected separately with the steel plate of default hole, it is connected by several springs between steel plate, it is cased with steel sleeve in i-beam frame interconnecting piece periphery, it is filled with foam concrete in steel sleeve, the hoop tool of locking steel sleeve is cased on steel sleeve periphery wall, constitutes closed arch retaining structure.The structure has certain deformation adaptability, compatible deformation can be generated with country rock, the deformation energy of country rock is set to obtain a degree of dissipation, it can obviously reduce deformation pressure of the shoulder bed effects in steelframe supporting, country rock can be effectively inhibited to generate excessive deformation simultaneously, it is unlikely to cause broken-rock pressure, technical support can be provided for the engineering problem that high ground stress soft rock stress tunnel deformation is big, supporting is difficult.
Description
Technical field
The utility model belongs to a kind of tunnel support structure, and in particular to one kind has under pressure from surrounding rock effect can contracting spy
Property section-steel support structure, be particularly applicable to high ground stress soft rock stress tunnel deformation control flexible support.
Background technology
The supporting effect in high ground stress soft rock stress tunnel directly affects the safety in tunnel.Deformation monitoring data shows, shape
Pressure changeable is that the main of soft rock tunnel supporting pressure shows form.When carrying out high ground stress soft rock stress tunnel support, if only simply
Support rigidity is improved, i.e., so-called " strong branch is resisted stubbornly ", the effect is unsatisfactory.Since rigid protection structure cannot be coordinated to become with country rock
Shape, with the increase that rheological behavior of surrounding rocks deforms, pressure from surrounding rock will increase rapidly suffered by supporting construction, and steel arch-shelf is caused largely to distort
It destroys, secondary lining serious cracking influences the steady in a long-term of tunnel.High ground stress soft rock stress tunnel support structure design and apply
During work, country rock generate large deformation supporting construction is played set effect threat it is huge, however, soft about high-ground stress
The research of the failure of mechanical mechanism, supporting construction that the country rock in rock tunnel interacts with supporting construction etc. is not perfect, therefore,
To the supporting construction of soft rock tunnel, there is still a need for largely studied.
Show to ensure the stabilization of supporting construction for the result of study of high ground stress soft rock stress tunnel support structure at present, then
It need to meet requirement below：
1. supporting construction has certain deformation adaptability, compatible deformation can occur with country rock；
2. simultaneously, supporting construction has certain rigidity again, compressed with country rock common eigenvector, it can be to country rock
Increasing supporting reaction is generated, country rock is inhibited to generate excessive deformation, it is unlikely to cause broken-rock pressure；
Generally speaking, during high ground stress soft rock stress tunnel support, the spy of weak surrounding rock self-deformation should be made full use of
Property, allow country rock to deform in a certain range, its deformation energy is made to obtain a degree of dissipation, country rock work can be reduced
With the pressure in supporting construction, to improve the safety coefficient of supporting construction.Meanwhile supporting construction can provide one to country rock
Fixed supporting reaction inhibits country rock to generate excessive deformation, and causes the loose damage of country rock.
Utility model content
The purpose of this utility model is to provide a kind of simple, easy soft rock tunnel compressibility steelframe supporting construction.
Using this structure, when acting on the pressure on steelframe and gradually increasing due to the deformation effect of country rock, by spring-foam coagulation
Local soil type at connector compressibility start generate compressive deformation, it is contracting the result is that the deformation energy of country rock further discharges, in turn
The pressure value acted on steelframe declines.Simultaneously by connector compressibility property, supporting construction in country rock common eigenvector
It is compressed, increasing supporting reaction will be generated to country rock, country rock can be inhibited to generate excessive deformation, it is unlikely to cause to enclose
Rock loose damage.The novel contractibility steelframe supporting construction can be effectively improved supporting undertake pressure is excessive, deflection be difficult to control
The problems such as, it reduces tunnel and changes arch rate, technical support is provided for high ground stress soft rock stress tunnel support engineering problem.
In order to achieve the above objectives, the embodiments of the present invention adopt the following technical scheme that：
A kind of contractibility steelframe supporting construction provided by the utility model thus, including a pair of I-steel arranged in opposite directions
Frame, the i-beam frame opposite end are connected separately with the steel plate of default hole, are connected by several springs between steel plate, in institute
It states i-beam frame interconnecting piece periphery and is cased with steel sleeve, foam concrete is filled in steel sleeve, lock is cased on steel sleeve periphery wall
The hoop tool of tight steel sleeve, constitutes closed arch retaining structure.
In said program, the utility model also has the technical solution further limited：
Further, the spring is the screwed big rigid spring in both ends, and both ends pass through the steel plate of I-steel end
Default hole, fixation is tightened with nut.
Further, the spring is extended through in the quadrangle of the steel plate of I-steel end.
Further, the steel sleeve is sleeved on spring periphery, and both ends are simultaneously stretched out certain to I-steel interconnecting piece upper and lower ends
Distance.
Further, the steel sleeve side wall is equipped with slip casting aperture, and foam concrete is noted by slip casting aperture into casing
It penetrates, and fills up the space of casing both ends stretching.
Further, several hoop tools tighten fixation along steel sleeve both ends and middle part clamping, and by its end-fitting respectively.
The characteristics of the utility model, is：
The structure can generate apparent contraction distortion at the initial stage acted on by pressure from surrounding rock.During compressive deformation,
Due to the contining function of steel sleeve, foam concrete is more and more close, and the compressive deformation rate of steelframe is gradually reduced, until stopping
Only.The globality that i-beam frame is connect with connector can be improved in the setting for binding round tool, increases the ability that shearing is resisted in joint, is one
Kind prevents joint as the effective measures of weak link.
The structure has certain deformation adaptability, can generate compatible deformation with country rock, the deformation energy of country rock is made to obtain
Dissipation to a certain extent, while country rock can effectively be inhibited to generate excessive deformation, it is unlikely to cause broken-rock pressure.Supporting construction is filled
Divide the deformation characteristic using country rock, can obviously reduce deformation pressure of the shoulder bed effects in steelframe supporting, while providing country rock
Increasing supporting reaction can effectively prevent country rock to generate loose damage.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the spring-foam concrete adapter system cross-sectional view of the utility model；
In figure：1. i-beam frame；2. steel sleeve；3. spring；4. hoop tool；5. foam concrete；6. steel plate；7. nut.
Specific implementation mode
The utility model is described in detail with reference to the accompanying drawings and detailed description.
As shown in Figure 1, a kind of contractibility steelframe supporting construction, including a pair of i-beam frame 1 arranged in opposite directions, i-beam frame
1 opposed end is welded with the steel plate 6 of default hole, and the steel of I-steel end is passed through using the screwed big rigid spring 3 in both ends
6 preset hole of plate, is used in combination nut 7 to tighten fixation；Steel sleeve 2 surrounds spring surrounding, and extends one to two i-beam frames, 1 end
Measured length；2 side wall of steel sleeve is equipped with slip casting aperture, by slip casting aperture into steel sleeve injected foam concrete 5, and fill up
The space that steel sleeve both ends are stretched out.Have 4 respectively along steel sleeve both ends and middle part clamping using the hoop for being known as " card is pulled ", and passes through it
End-fitting tightens fixation.I-beam frame 1 is connected by spring-foam concrete adapter system, forms complete, closed arch
Supporting construction.
As shown in Fig. 2, the steel plate 6 of I-steel end is respectively stayed in quadrangle there are one default hole, spring 3 is each passed through default
Hole is arranged in quadrangle.
The principles of the present invention are, instead of the rigid scheme that i-beam frame connects, using the steelframe with compressibility
Connector connects system, and when steel arch-shelf is acted on by pressure from surrounding rock, spring-foam concrete adapter system generates compressive deformation,
The deformation energy of country rock obtains a degree of release, and the pressure acted on steelframe reduces, and reduces the probability of steelframe unstable failure.
Meanwhile when spring-foam concrete compressibility is compressed to boundary value, it can think incompressible, effectively prevent country rock
Deform it is excessive and caused by loose damage.
The preferable specific implementation mode of the above, only the utility model, but the scope of protection of the utility model is not
It is confined to this, any one skilled in the art within the technical scope disclosed by the utility model, can readily occur in
Change or replacement, should be covered within the scope of the utility model.
Claims (6)
1. a kind of contractibility steelframe supporting construction, including a pair of i-beam frame arranged in opposite directions, it is characterised in that：The I-steel
Frame opposite end is connected separately with the steel plate of default hole, is connected by several springs between steel plate, connects in the i-beam frame
Socket part periphery is cased with steel sleeve, and foam concrete is filled in steel sleeve, the hoop of locking steel sleeve is cased on steel sleeve periphery wall
Tool, constitutes closed arch retaining structure.
2. a kind of contractibility steelframe supporting construction according to claim 1, it is characterised in that：The spring carries for both ends
The big rigid spring of screw thread, both ends pass through the steel plate of I-steel end to preset hole, fixation are tightened with nut.
3. a kind of contractibility steelframe supporting construction according to claim 2, it is characterised in that：The spring extends through
The quadrangle of the steel plate of I-steel end.
4. a kind of contractibility steelframe supporting construction according to claim 1, it is characterised in that：The steel sleeve is sleeved on spring
Certain distance is simultaneously stretched out in periphery, both ends to I-steel interconnecting piece upper and lower ends.
5. a kind of contractibility steelframe supporting construction according to claim 4, it is characterised in that：It is set on the steel sleeve side wall
There are slip casting aperture, foam concrete to be injected into steel sleeve by slip casting aperture, and fills up the space of steel sleeve both ends stretching.
6. a kind of contractibility steelframe supporting construction according to claim 1, it is characterised in that：Several hoop tools are respectively along steel
Casing both ends and middle part clamping, and fixation is tightened by its end-fitting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721783573.1U CN207701150U (en) | 2017-12-19 | 2017-12-19 | A kind of contractibility steelframe supporting construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721783573.1U CN207701150U (en) | 2017-12-19 | 2017-12-19 | A kind of contractibility steelframe supporting construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207701150U true CN207701150U (en) | 2018-08-07 |
Family
ID=63027304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721783573.1U Expired - Fee Related CN207701150U (en) | 2017-12-19 | 2017-12-19 | A kind of contractibility steelframe supporting construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207701150U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109611129A (en) * | 2018-12-25 | 2019-04-12 | 中国电建集团华东勘测设计研究院有限公司 | It can contracting formula the stressed-arch structures and construction method |
| CN110847928A (en) * | 2019-11-12 | 2020-02-28 | 中南林业科技大学 | Tunnel shock absorption method, energy dissipation component applied by tunnel shock absorption method and application method of component |
| CN111502707A (en) * | 2020-05-11 | 2020-08-07 | 中铁十八局集团有限公司 | Tunnel extremely soft rock stratum contraction arch frame primary support method |
| CN112096423A (en) * | 2020-09-30 | 2020-12-18 | 兰州交通大学 | Clamping seat type retractable steel arch connector |
| CN113482667A (en) * | 2021-08-19 | 2021-10-08 | 重庆交通大学 | Tunnel steel frame connecting device adapting to two-way deformation |
-
2017
- 2017-12-19 CN CN201721783573.1U patent/CN207701150U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109611129A (en) * | 2018-12-25 | 2019-04-12 | 中国电建集团华东勘测设计研究院有限公司 | It can contracting formula the stressed-arch structures and construction method |
| CN109611129B (en) * | 2018-12-25 | 2024-04-19 | 中国电建集团华东勘测设计研究院有限公司 | Retractable prestress arch structure and construction method |
| CN110847928A (en) * | 2019-11-12 | 2020-02-28 | 中南林业科技大学 | Tunnel shock absorption method, energy dissipation component applied by tunnel shock absorption method and application method of component |
| CN111502707A (en) * | 2020-05-11 | 2020-08-07 | 中铁十八局集团有限公司 | Tunnel extremely soft rock stratum contraction arch frame primary support method |
| CN112096423A (en) * | 2020-09-30 | 2020-12-18 | 兰州交通大学 | Clamping seat type retractable steel arch connector |
| CN113482667A (en) * | 2021-08-19 | 2021-10-08 | 重庆交通大学 | Tunnel steel frame connecting device adapting to two-way deformation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190822 Address after: Room 117, Building Materials Building No. 13 Yanta Road, Beilin District, Xi'an City, Shaanxi Province Patentee after: Xi'an Construction Technology University Engineering Co.,Ltd. Address before: 710055 Shaanxi province Xi'an Beilin District Yanta Road No. 13 Patentee before: XIAN University OF ARCHITECTURE AND TECHNOLOG |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180807 |