CN105256798A - Multi-segment expanding thin-walled anchor pipe structure and construction method - Google Patents
Multi-segment expanding thin-walled anchor pipe structure and construction method Download PDFInfo
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- CN105256798A CN105256798A CN201510616517.8A CN201510616517A CN105256798A CN 105256798 A CN105256798 A CN 105256798A CN 201510616517 A CN201510616517 A CN 201510616517A CN 105256798 A CN105256798 A CN 105256798A
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- hydraulic pressure
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Abstract
The invention provides a multi-segment expanding thin-walled anchor pipe structure and construction method. The whole structure of the device is composed of a hydraulic expanding handpiece and a metal thin-walled anchor pipe. The method is different from an ordinary anchoring method, the hydraulic expanding handpiece is used for expanding the anchor pipe by segments, multiple protruding points are formed in the metal thin-walled anchor pipe in a jacking mode, connection between soil bodies is enhanced through the action of physical clamping and mortising to achieve the anchoring effect, the method can be applied to temporary or semi-permanent anchoring engineering, and the construction efficiency is improved greatly. The device is used for temporary or semi-permanent slope excavating and supporting engineering. The structure is high in automation degree, operation is easy and convenient, and the construction efficiency is high.
Description
Technical field
The present invention relates to a kind of multistage and expand Thin Anchor Wall tubular structure and construction method, for slope excavation support engineering, the equipment of cost-saving, reduction of erection time, environmental protection, this plant automation degree is high, physical mechanical occlusion method is adopted to carry out anchoring, efficiency of construction is high, belongs to the correlative technology field such as geotechnical engineering and Environmental Engineering.
Background technology
Along with the development in city, the utilization of the underground space gets more and more.Because trenchless engineering technical requirements is high, cost is also high, and therefore, excavation of foundation pit is the relatively more conventional method developing the underground space at present.But much regional, especially the soil mass property of coastal area is poor, and to the difficulty brought of constructing, the stability of slope problem of excavation of foundation pit seems particularly important.Support of Foundation Pit Excavation is various informative, as put slope excavation, drawing that anchor coordinates lagging pile excavation, diaphragm wall adds anchor pole, slope protection pile adds anchor pole, agitation pile supporting and reverse construction etc. outward.Wherein, the advantage such as anchor tube supporting has that occupied ground is little, construction space is large in foundation ditch, speed of application is fast, is thus widely used in Support of Foundation Pit Excavation engineering.The anchorage style of anchor tube supporting is generally slip casting anchoring, and slip casting anchoring exists two difficult points, and one is that the full degree of slip casting can not obtain Reliable guarantee, and two is that slip casting is solidified to play a role and needed a period of time, can not be used as to reinforce in time.In order to solve this two problems, the present invention changes anchoring process, adopts physical mechanical anchoring process, proposes save time and the new method of material-saving to anchor tube supporting.
Summary of the invention
The object of the invention is to propose a kind of multistage and expand Thin Anchor Wall tubular structure and construction method, adopt physical mechanical occlusion method to carry out the anchoring of anchor tube, to solve the problem that anchor tube slip casting is not full and can not reinforce in time.The present invention is mainly applicable to Support of Foundation Pit Excavation engineering.
For achieving the above object, the present invention adopts following technical proposals to be achieved:
A kind of multistage expands Thin Anchor Wall tubular structure, comprises: hydraulic pressure expands head and metal thin-wall anchor tube.
Head comprises anterior blunt nose cone, 4 guide-track grooves, 4 hydraulic pressure shore cap, inflow pipeline, flowline in hydraulic pressure expansion.Anterior blunt nose cone is positioned at the hydraulic pressure enlarger crown and enters front end, guides hydraulic pressure to expand head and advances; The side that hydraulic pressure expands head is uniformly distributed 4 guide-track grooves, the guide rail of complexed metal thin-walled anchor tube inside, makes hydraulic pressure expand head and can keep fixed pose forward-reverse; 4 hydraulic pressure are shored cap and can be ejected to radial direction by hydraulic pressure force, metal thin-wall anchor tube are outwards ejected 4 raised points, utilize raised points and the engaged applying anchored force of surrounding soil; Hydraulic pressure expands head and comprises inflow pipeline and flowline, provides 4 hydraulic pressure to shore the hydraulic coupling of cap with hydraulic oil.
Metal thin-wall anchor tube is the metal thin-wall pipe of one end open, 4 head rails are had inside pipe, 4 guide-track grooves expanding head with hydraulic pressure are engaged, hydraulic pressure expands head in metal thin-wall pipe, presses head rail direction forward-reverse, and shores cap by hydraulic pressure eject raised points on metal thin-wall pipe.
A kind of multistage expands Thin Anchor Wall pipe construction method:
1), the place setting anchor tube is being needed to carry out measurement and positioning, to hole;
2), with the place of roof-bolter in location hole, clear hole, squeezes into metal thin-wall anchor tube, and closed one end inwardly;
3) 4 guide-track grooves, hydraulic pressure being expanded head are stuck on 4 head rails inside metal thin-wall anchor tube, hydraulic pressure is expanded head and be advanced to precalculated position in metal thin-wall anchor tube, connect oil pipeline power supply, 4 hydraulic pressure are shored cap and outwards metal thin-wall anchor tube are ejected 4 raised points, raised points and surrounding soil engaged, hydraulic pressure is shored cap and is got back to original position, and hydraulic pressure expands head 1 and moves on;
4), hydraulic pressure expansion head moves on along head rail, proceed to next predeterminated position, suspend and advance, 4 hydraulic pressure are shored cap and outwards metal thin-wall anchor tube are ejected 4 raised points, raised points and surrounding soil engaged, hydraulic pressure is shored cap and is got back to original position, and hydraulic pressure expands head and moves on, and completes reaming next time;
5), after repeatedly reaming terminates, hydraulic pressure expands head and retreats along head rail, until exit metal thin-wall anchor tube, has set an anchor tube;
The present invention adopts physical method to replace slip casting to carry out anchoring, and expand head by hydraulic pressure and eject raised points in anchor tube, raised points and surrounding soil extrude mutually the effect being engaged and reaching anchoring.The method has saved injecting paste material, it also avoid the restriction of slip casting setting time, is applied to by physical method in anchoring, opens new anchoring thinking.
advantage of the present invention
What the present invention proposed expands thin-walled anchor tube for the multistage in Support of Foundation Pit Excavation engineering, adopt hydraulic pressure to expand head segmentation and expand anchor tube, multiple raised points is ejected in metal thin-wall anchor tube, utilize the connection between the physical method reinforcement soil body, reach the effect of anchoring, occupied ground is little, construction space is large in foundation ditch, speed of application is fast.This device instrument adopts electromechanical work, and automaticity is high, easy and simple to handle, and efficiency of construction is high, has good benefit.
Accompanying drawing explanation
Accompanying drawing 1 is hydraulic pressure expansion head schematic diagram
Accompanying drawing 2 is metal thin-wall anchor tube schematic diagram
Accompanying drawing 3 is overall schematic
In figure: 1 hydraulic pressure expands head, and 2 anterior blunt nose cones, 3 hydraulic pressure shore cap, 4 guide-track grooves, 5 inflow pipelines, 6 flowlines, 7 metal thin-wall anchor tubes, 8 head rails.
detailed description of the invention:
Below in conjunction with the drawings and specific embodiments, technical scheme of the present invention is described in further detail.
Embodiment
A kind of multistage expands thin-walled anchor tube, comprises: hydraulic pressure expands head 1 and metal thin-wall anchor tube 7.
Hydraulic pressure expansion head 1 comprises anterior blunt nose cone 2,4 guide-track grooves, 4 hydraulic pressure shore cap 3, inflow pipeline 5, flowline 6.Anterior blunt nose cone 2 is positioned at hydraulic pressure and expands head 1 jacking front end, guides hydraulic pressure to expand head 1 and advances; The side that hydraulic pressure expands head 1 is uniformly distributed 4 guide-track grooves, the guide rail of complexed metal thin-walled anchor tube 7 inside, makes hydraulic pressure expand head 1 and can keep fixed pose forward-reverse; 4 hydraulic pressure are shored cap 3 and can be ejected to radial direction by hydraulic pressure force, metal thin-wall anchor tube 7 are outwards ejected 4 raised points, utilize raised points and the engaged applying anchored force of surrounding soil; Hydraulic pressure expands head 1 and comprises inflow pipeline 5 and flowline 6, provides 4 hydraulic pressure to shore the hydraulic coupling of cap 3 with hydraulic oil;
Metal thin-wall anchor tube 7 one end open, 4 head rails 8 are had inside pipe, 4 guide-track grooves expanding head 1 with hydraulic pressure are engaged, and hydraulic pressure expands head 1 in metal thin-wall pipe 7, presses head rail direction forward-reverse, and shores cap 3 by hydraulic pressure eject raised points on metal thin-wall pipe 7.
A kind of multistage expands the construction method of thin-walled anchor tube:
1), the place setting anchor tube is needed to carry out measurement and positioning, to hole at foundation ditch;
2), with the place of roof-bolter in location hole, clear hole, squeezes into metal thin-wall anchor tube 7;
3) 4 guide-track grooves 4, by hydraulic pressure expanding head 1 are stuck on 4 head rails 8 of metal thin-wall anchor tube 7 inside, switch on power, and in anchor tube, reaming is carried out in segmentation;
4), hydraulic pressure expansion head 1 advances along head rail 8, advance certain distance, suspend and advance, four hydraulic pressure are shored cap 3 and outwards metal thin-wall anchor tube 7 are ejected 4 raised points, raised points and surrounding soil engaged, hydraulic pressure is shored cap 3 and is got back to original position, and hydraulic pressure expands head 1 and moves on, and completes reaming next time;
5), after reaming terminates, hydraulic pressure expands head 1 and retreats along head rail 8, until exit metal thin-wall anchor tube 7.
Claims (2)
1. multistage expands a Thin Anchor Wall tubular structure, comprises hydraulic pressure and expands head and metal thin-wall anchor tube, it is characterized in that:
Head comprises anterior blunt nose cone, 4 guide-track grooves, 4 hydraulic pressure shore cap, inflow pipeline, flowline in described hydraulic pressure expansion, and anterior blunt nose cone is positioned at the hydraulic pressure enlarger crown and enters front end, guides hydraulic pressure to expand head and advances; The side that hydraulic pressure expands head is uniformly distributed 4 guide-track grooves, the guide rail of complexed metal thin-walled anchor tube inside, makes hydraulic pressure expand head and can keep fixed pose forward-reverse; 4 hydraulic pressure are shored cap and can be ejected to radial direction by hydraulic pressure force, metal thin-wall anchor tube are outwards ejected 4 raised points, utilize raised points and the engaged applying anchored force of surrounding soil; Hydraulic pressure expands head and comprises inflow pipeline and flowline, provides 4 hydraulic pressure to shore the hydraulic coupling of cap with hydraulic oil;
Described metal thin-wall anchor tube one end open, 4 head rails are had inside pipe, 4 guide-track grooves expanding head with hydraulic pressure are engaged, and hydraulic pressure expands head in metal thin-wall pipe, presses head rail direction forward-reverse, and shores cap by hydraulic pressure eject raised points on metal thin-wall pipe.
2. expand a construction method for Thin Anchor Wall tubular structure based on a kind of multistage according to claim 1, be different from the construction method of conventional anchor fixing structure, have following characteristics:
1), selecting to need side slope that is interim or short-term reinforcing, needing the place setting anchor tube to carry out measurement and positioning, according to reinforce stabilization requirement, arranging the spacing of wells and form;
2), set anchor tube, hole with the place of roof-bolter in location, clear hole, squeezes into metal thin-wall anchor tube, and closed one end inwardly;
3), anchoring is shored, 4 guide-track grooves hydraulic pressure being expanded head are stuck on 4 head rails inside metal thin-wall anchor tube, hydraulic pressure is expanded head and be advanced to precalculated position in metal thin-wall anchor tube, connect oil pipeline power supply, 4 hydraulic pressure are shored cap and outwards metal thin-wall anchor tube are ejected 4 raised points, raised points and surrounding soil engaged, hydraulic pressure is shored cap and is got back to original position, hydraulic pressure expand head 1 move on;
4), anchoring is shored step by step, hydraulic pressure expands head and moves on along head rail, proceed to next preset shore position, suspend and advance, 4 hydraulic pressure are shored cap and outwards metal thin-wall anchor tube are ejected 4 raised points, raised points and surrounding soil engaged, hydraulic pressure is shored cap and is got back to original position, hydraulic pressure expands head and moves on, and completes reaming next time;
5), repeatedly shore end after, hydraulic pressure expand head retreat along head rail, until exit metal thin-wall anchor tube, set an anchor tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510616517.8A CN105256798A (en) | 2015-09-24 | 2015-09-24 | Multi-segment expanding thin-walled anchor pipe structure and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510616517.8A CN105256798A (en) | 2015-09-24 | 2015-09-24 | Multi-segment expanding thin-walled anchor pipe structure and construction method |
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| Publication Number | Publication Date |
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| CN105256798A true CN105256798A (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510616517.8A Pending CN105256798A (en) | 2015-09-24 | 2015-09-24 | Multi-segment expanding thin-walled anchor pipe structure and construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110984184A (en) * | 2019-11-04 | 2020-04-10 | 中铁二院工程集团有限责任公司 | Construction method of soil slope expanding anchoring body anchor cable reinforcing structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1484565A1 (en) * | 1964-04-30 | 1969-07-31 | Schwaebische Huettenwerke Gmbh | Ground anchor |
| CN1185187A (en) * | 1995-04-11 | 1998-06-17 | 托伯乔恩·诺曼 | Method and device for performing ground anchorage |
| JP2008280826A (en) * | 2007-05-11 | 2008-11-20 | Ym Kikaku:Kk | Method for increasing anchor pull-out force |
| CN104179177A (en) * | 2014-08-13 | 2014-12-03 | 江苏鸿基科技有限公司 | Nailing and anchoring device based on foundation pit supporting structure and construction method of nailing and anchoring device |
-
2015
- 2015-09-24 CN CN201510616517.8A patent/CN105256798A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1484565A1 (en) * | 1964-04-30 | 1969-07-31 | Schwaebische Huettenwerke Gmbh | Ground anchor |
| CN1185187A (en) * | 1995-04-11 | 1998-06-17 | 托伯乔恩·诺曼 | Method and device for performing ground anchorage |
| JP2008280826A (en) * | 2007-05-11 | 2008-11-20 | Ym Kikaku:Kk | Method for increasing anchor pull-out force |
| CN104179177A (en) * | 2014-08-13 | 2014-12-03 | 江苏鸿基科技有限公司 | Nailing and anchoring device based on foundation pit supporting structure and construction method of nailing and anchoring device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110984184A (en) * | 2019-11-04 | 2020-04-10 | 中铁二院工程集团有限责任公司 | Construction method of soil slope expanding anchoring body anchor cable reinforcing structure |
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Application publication date: 20160120 |