CN104264670A - Porous electric heating recyclable anchorage device combined type component and construction method using same - Google Patents
Porous electric heating recyclable anchorage device combined type component and construction method using same Download PDFInfo
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- CN104264670A CN104264670A CN201410534911.2A CN201410534911A CN104264670A CN 104264670 A CN104264670 A CN 104264670A CN 201410534911 A CN201410534911 A CN 201410534911A CN 104264670 A CN104264670 A CN 104264670A
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- core support
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
- E02D5/76—Anchorings for bulkheads or sections thereof in as much as specially adapted therefor
- E02D5/765—Anchorings for bulkheads or sections thereof in as much as specially adapted therefor removable
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0006—Plastics
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a porous electric heating recyclable anchorage device combined type component and a construction method using the same, relates to the combined component providing temporary support for rock and soil anchorage engineering and the construction method using the same and aims at providing the porous electric heating recyclable anchorage device combined type component which enables steel strands to be conveniently, efficiently and rapidly recycled and the construction method for recycling the steel strands using the component. The porous electric heating recyclable anchorage device combined type component comprises a first external locking plate and a second locking plate; a first inner core supporting plate and a second inner core supporting plate are arranged between the first external locking plate and the second locking plate; a first electric heating melting high-strength plastic plate and a second electric heating melting high-strength plastic plate are arranged between the first inner core supporting plate and the second inner core supporting plate; a current heating plate is arranged between the first inner core supporting plate and the second inner core supporting plate; the above components are fixedly connected through connecting parts; a clamping device is arranged between the external locking plate and the inner core supporting plate; springs sleeve two ends of the connecting parts; a lead is connected to the current heating plate.
Description
Technical field
The present invention relates to anchoring support field, particularly relate to a kind of for providing the combined member of temporary supporting for geotechnical anchor engineering and utilizing its construction method.
Background technology
In City Excavation Engineering temporary supporting, anchor rod construction process is widely used, the hardwares such as steel strand often surmount building line, at contiguous zone underground net radiation, after main structure construction completes, the residual steel beam column lost efficacy can have an impact to adjacent domain, and arrange pipeline to construction in later period, underground space development causes difficulty.
Along with the enhancing of underground space property right protection consciousness in city development, surmount the phenomenon of building red line in anchor bolt construction and be strictly limited.20th century the eighties, American-European countries's recoverable anchor rod construction technology progressively starts application, and through the development of more than 30 years, the land development region of anchorage engineering construction limited relevant laws and regulations gradual perfection, performs related measure and progressively strengthens.At home, Wuhan, Kunming, the area such as Jiangsu has strictly limited the application of common bolt, has formulated relevant regulations such as " soil bolt can not surmount red line, and steel strand must reclaim ", ensures not allow to invade adjacent ground property rights from law angle.
Domestic and international priority have developed multiple recoverable anchor bolt construction technology, general overview can be divided three classes, one is the recoverable prestressed anchor cable of mechanical type, main employing mechanical device structure reclaims, represent the SAMWOO etc. that there is Korea S in enterprise, anchor cable body and special-shaped prestressed reinforcement equijoin get up with hookup by it, when reclaiming, apply the power contrary with fastening direction to rotate, taken out after anchor cable body and hookup are thrown off; Two is the recoverable prestressed anchor cables of mechanics formula, and represent the KTB etc. that there is Japan in enterprise, domestic Metallurgical Research Institute, Department of Architecture introduces the U-shaped anchor etc. of exploitation, with having the steel strand of outer tube as anchor cable body, when reclaiming, stretching force being applied to steel strand, it is extracted out by root in anchor cable body; Three is the recoverable prestressed anchor cables of chemical formula, and representing enterprise has UBC etc., is first install electro-heat equipment in stretch-draw body of rod free segment bottom or install demolition set, when reclaiming, using point apparatus to process key point respectively, making the adhesive section body of rod lose efficacy and extract.A large amount of research and development that numerous scientific research institution and enterprise carry out recoverable anchor rod technology, create good economical, societal benefits.Current recoverable mooring rod technique some shortcomings of existence in various degree, the shortcomings such as financial cost is high, complex process, and the rate of recovery is low, and single anchor bearing capacity is little.
Summary of the invention
The technical problem to be solved in the present invention is to provide that a kind of steel strand can be facilitated, the porous electric heating melting recyclable ground tackle combined type component that efficiently and quickly reclaims and utilize it to carry out the construction method of steel strand recovery.
Porous electric heating melting of the present invention recyclable ground tackle combined type component, comprise the first outer lockplate and the second outer lockplate, described first, the first Core support plate and the second Core support plate is provided with between two outer lockplates, described first, two Core support plates are respectively near first, two outer lockplates are arranged, described first, the first electric heating melting high strength plastics plate and the second electric heating melting high strength plastics plate is provided with between two Core support plates, described first, two electric heating melting high strength plastics plates are respectively near first, two Core support plates are arranged, described first, current flow heats plate is provided with between two electric heating melting high strength plastics plates, described first outer lockplate, second outer lockplate, first Core support plate, second Core support plate, first electric heating melting high strength plastics plate, second electric heating melting high strength plastics plate and current flow heats plate are fixed together by connector, clamping device is provided with between described first outer lockplate and the first Core support plate, also clamping device is provided with between described second outer lockplate and the second Core support plate, described clamping device is made up of two symmetrical half clamping devices, two and half clamping devices are located on outer lockplate and Core support plate respectively, the two ends of described connector are respectively arranged with a spring, described spring is between the termination of connector and adjacent Core support plate, described current flow heats plate is connected with wire.
Porous electric heating melting of the present invention recyclable ground tackle combined type component, wherein said first, the external surface of two outer lockplates is all circular, arc, rectangle, square or the overall structure by above-mentioned shape machinery removal local, described first, the inner surface of two outer lockplates, namely the side of half anchor clipper is provided with all for facing directly, cambered surface or folding face, described first, the side being provided with half anchor clipper of two Core support plates is all for facing directly, cambered surface or folding face, first, the side relative to half anchor clipper of two Core support plates is all for facing directly, cambered surface or folding face, the side near the first Core support plate of described first electric heating melting high strength plastics plate and the side near current flow heats plate are all for facing directly, cambered surface or folding face, the side near the second Core support plate of the second electric heating melting high strength plastics plate and the side near current flow heats plate are all for facing directly, cambered surface or folding face.
Porous electric heating melting of the present invention recyclable ground tackle combined type component, wherein said connector is bolt, the quantity of described bolt is at least one, with fastening nuts after the outer lockplate of screw bolt passes first, the first Core support plate, the first electric heating melting high strength plastics plate, current flow heats plate, the second electric heating melting high strength plastics plate, the second Core support plate and the second outer lockplate, the two ends of described bolt are respectively arranged with spring described in, one of them spring is between bolt head and the first Core support plate, and another spring is between nut and the second Core support plate.
Porous electric heating melting of the present invention recyclable ground tackle combined type component, the quantity of wherein said bolt is 1 ~ 9, and it is in axially uniform or symmetrical uniform.
Porous electric heating melting of the present invention recyclable ground tackle combined type component, wherein said clamping device is circular anchor clipper, described anchor clipper is made up of half anchor clipper of two symmetrical semicirculars in shape respectively, and two and half anchor clippers are located on outer lockplate and Core support plate respectively.
Porous electric heating melting of the present invention recyclable ground tackle combined type component, wherein said current flow heats plate is rectangular slab or circular arc plate, the size of current flow heats plate is less than, be equal to or greater than first and second electric heating melting high strength plastics plate be adjacent, and the combined type that current flow heats plate is electrical bar pattern, heating wire winding formula, electrical bar insert the combined type of electric hot plate, electric heating bar is built in electric hot plate, heating wire are built in the combined type that the combined type of electric hot plate or electrothermal tube are built in electric hot plate.
Porous electric heating melting of the present invention recyclable ground tackle combined type component, first and second outer lockplate wherein said and first and second Core support plate are all made up of steel, irony, copper, aluminium matter, plastics or glass-reinforced plastic material.
Porous electric heating melting of the present invention recyclable ground tackle combined type component, first and second electric heating melting high strength plastics plate wherein said is the special engineering plastics of PPS, PSF, PASF, PES, or be the engineering plastics of PEEK, PPO, PPE, PC, PBT, POM, PA, PET, PEI, PAI, PI, or be positioned at the engineering material of less than 400 degree for fusing point.
Porous electric heating melting of the present invention recyclable ground tackle combined type component, wherein said current flow heats plate is made up of copper, steel, irony, aluminium matter or glass fiber reinforced plastic material.
Porous electric heating melting of the present invention recyclable ground tackle combined type component, wherein said half anchor clipper is 2 ~ 4 lobes, and intermediate plate pattern is linear pattern or spiral line type.
The present invention utilizes the construction method of porous electric heating melting recyclable ground tackle combined type component, comprises the following steps:
(1) wire is connected with electric lead, and electric lead water-protected enclosure is inner at cable protective tube, the bound adhesive tape tight binding of cable protective tube is outside in Grouting Pipe, or electric lead bound adhesive tape water-protected enclosure is outside at detachable steel strand, or establishes separately pipe relief electric lead poling to form;
(2) releasable steel strand are locked between outer lockplate and Core support plate by anchor clipper under the prestress value of setting, after outer lockplate, Core support plate, electric heating melting high strength plastics plate and current flow heats plate being connected by connector, the outside of recyclable for porous electric heating melting ground tackle combined type component is adopted overall plastic packaging form, its entirety by totally-enclosed in steel protective cover, again through being fixed on resistance to compression anchor slab, after having sealed, be connected with the forward end seal of protective cover, form grouting waterproof porous electric heating melting recyclable ground tackle combined integrate component;
(3) arrive precalculated position boring with jumbolter, common prefabricated pore-forming or high pressure reaming, after prefabricated pore-forming terminates, carry out hole operation clearly immediately, adopt cementation and slip casting displacement, by water/binder ratio be 0.35 ~ 0.5 cement mortar injection hole bottom replace slurries, by step (2) in grouting waterproof porous electric heating melting recyclable ground tackle combined integrate component send into design attitude, slip casing by pressure is adopted to inject cement mortar, in after this 0 ~ 24 hour, according to strata condition, secondary pressure benefit slurry can be carried out to anchoring section and improve quality further;
(4) after releasable steel strand complete as the function of anchor cable, start the recovery carrying out steel strand, namely light-weight jack is utilized, remove intermediate plate successively in order, moveable anchor and pedestal backing plate, by step (1) in electric lead and special low-tension current equipment connect, after 10 minutes, outer lockplate and Core support plate are separated, anchor clipper also opens along with the separation of half anchor clipper, steel strand rotate by following steel stranded wire clamper, complete push-and-pull process simultaneously, steel strand are discharged from ground tackle, easily steel strand can be got loose, steel strand recovery is carried out again with hoist engine.
Porous electric heating melting recyclable ground tackle combined type component of the present invention and utilize its construction method difference from prior art to be in the present invention current flow heats plate on wire after being powered up, be adjacent near electric heating melting high strength plastics plate meeting melted by heat, afterwards under the elastic force effect of spring, can move to electric heating melting high strength plastics plate place with the Core support plate that electric heating melting high strength plastics plate is adjoining, such Core support plate and outer lockplate will be separated from each other, also can open in the anchor clipper being used to lock steel strand, with steel stranded wire clamper, steel strand are rotated again, complete push-and-pull process simultaneously, steel strand are discharged from ground tackle, fixed base is left after can steel strand being made quickly to get loose, the recovery of steel strand is carried out again with hoist engine or construction equipment.Thus the present invention has the following advantages: one is that bearing capacity is high, be convenient to design, porous electric heating melting recyclable ground tackle combined type component anchor shoulder foundation area is large, significantly improve anchor pole supporting capacity in the earth formation, and same ground tackle can adopt 2,3,4, the design of odevity many, and completely independent each other; Two is safety, adopts low-tension current operation, can ensure constructor's safety when steel strand reclaim, and three is that speed is fast, and steel strand reclaim and can complete at short notice, and required pulling capacity is little, can be completed under partial picture by artificial drawing; Four is that the rate of recovery is high, improves common anchor cable drawing and to loose core the low phenomenon of rate; Five is that distribution of force is reasonable, and reduce the stressed of combined mechanism and structural meterials to greatest extent, in drawing process, steel strand extraction yield is high, constantly stays, and has stronger construction stability.
Below in conjunction with accompanying drawing, the invention will be further described.
Accompanying drawing explanation
Fig. 1 is the front view of the embodiment one of porous electric heating melting of the present invention recyclable ground tackle combined type component;
Fig. 2 is the sectional view of the embodiment one of porous electric heating melting of the present invention recyclable ground tackle combined type component;
Fig. 3 is the state diagram after embodiment one electrofuse of porous electric heating melting of the present invention recyclable ground tackle combined type component;
Fig. 4 is the fabricated structure figure of the electrical bar insertion electric hot plate of the current flow heats plate of the embodiment one of porous electric heating melting of the present invention recyclable ground tackle combined type component;
Fig. 5 is the fabricated structure figure that the electric heating bar of the current flow heats plate of the embodiment two of porous electric heating melting of the present invention recyclable ground tackle combined type component is built in electric hot plate;
Fig. 6 is the fabricated structure figure that the heating wire of the current flow heats plate of the embodiment three of porous electric heating melting of the present invention recyclable ground tackle combined type component is built in electric hot plate;
Fig. 7 is the structure chart of the embodiment two of porous electric heating melting of the present invention recyclable ground tackle combined type component;
Fig. 8 is the structure chart of the embodiment three of porous electric heating melting of the present invention recyclable ground tackle combined type component;
Fig. 9 is the structure chart of the embodiment four of porous electric heating melting of the present invention recyclable ground tackle combined type component;
Figure 10 is that the Grouting Pipe of porous electric heating melting of the present invention recyclable ground tackle combined type component twines conductance line chart;
Figure 11 is the structure chart of the embodiment five of porous electric heating melting of the present invention recyclable ground tackle combined type component;
Figure 12 is that the steel strand of porous electric heating melting of the present invention recyclable ground tackle combined type component twine conductance line chart.
Detailed description of the invention
Embodiment one
As shown in figures 1-4, porous electric heating melting of the present invention recyclable ground tackle combined type component comprises the first outer lockplate 1 and the second outer lockplate 2, described first, two outer lockplates 1, the first Core support plate 3 and the second Core support plate 4 is provided with, described first between 2, two Core support plates 3, 4 respectively near first, two outer lockplates 1, 2 are arranged, described first, two Core support plates 3, the first electric heating melting high strength plastics plate 5 and the second electric heating melting high strength plastics plate 6, described first is provided with between 4, two electric heating melting high strength plastics plates 5, 6 respectively near first, two Core support plates 3, 4 are arranged, and described first, two electric heating melting high strength plastics plates 5, current flow heats plate 7 is provided with, described first outer lockplate 1 between 6, second outer lockplate 2, first Core support plate 3, second Core support plate 4, first electric heating melting high strength plastics plate 5, second electric heating melting high strength plastics plate 6 and current flow heats plate 7 are fixed together by connector, clamping device is provided with between described first outer lockplate 1 and the first Core support plate 3, also clamping device is provided with between described second outer lockplate 2 and the second Core support plate 4, described clamping device is made up of two symmetrical half clamping devices, two and half clamping devices are located on outer lockplate and Core support plate respectively, the two ends of described connector are respectively arranged with a spring 8, described spring 8, between the termination of connector and adjacent Core support plate, described current flow heats plate 7 is connected with wire 12.
Preferably, wherein said connector is bolt 10, this bolt is high-strength set bolt, the quantity of described bolt 10 is 6, it is in axially uniform or symmetrical uniform, bolt 10 is successively through the first outer lockplate 1, first Core support plate 3, first electric heating melting high strength plastics plate 5, current flow heats plate 7, second electric heating melting high strength plastics plate 6, use nut 11 fastening after second Core support plate 4 and the second outer lockplate 2, the two ends of described bolt 10 are respectively arranged with spring 8 described in, one of them spring 8 is between bolt 10 head and the first Core support plate 3, another spring 8 is between nut 11 and the second Core support plate 4.Spring can be selected and simplification, and its effective length is 1 ~ 50mm.
Preferably, wherein said clamping device is circular anchor clipper 9, the quantity of anchor clipper 9 is 4, anchor clipper 9 is centrosymmetric layout, described anchor clipper 9 is made up of half anchor clipper of two symmetrical semicirculars in shape respectively, described half anchor clipper is 3 lobes, and intermediate plate pattern is linear pattern, and two and half anchor clippers are located on outer lockplate and Core support plate respectively.
Preferably, wherein said first, two outer lockplates 1, the external surface of 2 is all circular, described first, two outer lockplates 1, the inner surface of 2, namely the side of half anchor clipper is provided with all for facing directly, described first, two Core support plates 3, the side being provided with half anchor clipper of 4 is all for facing directly, first, two Core support plates 3, the side relative to half anchor clipper of 4 is all for facing directly, the side near the first Core support plate 3 of described first electric heating melting high strength plastics plate 5 and the side near current flow heats plate 7 are all for facing directly, the side near the second Core support plate 4 of the second electric heating melting high strength plastics plate 6 and the side near current flow heats plate 7 are all for facing directly.
Preferably, wherein said current flow heats plate 7 is rectangular slab or circular arc plate, the size of current flow heats plate 7 is less than, be equal to or greater than first and second electric heating melting high strength plastics plate 5,6 be adjacent, and current flow heats plate 7 is the fabricated structure of electrical bar insertion electric hot plate.
Preferably, first and second outer lockplate 1,2 wherein said and first and second Core support plate 3,4 are all made up of steel material.
Preferably, first and second electric heating melting high strength plastics plate 5,6 wherein said is PEEK engineering plastics.
Preferably, wherein said current flow heats plate 7 is made up of copper, steel, irony, aluminium matter or glass fiber reinforced plastic material.
Shown in Figure 10, the present invention utilizes the construction method of porous electric heating melting recyclable ground tackle combined type component, comprises the following steps:
(1) wire 12 is connected with electric lead 16, and electric lead 16 water-protected enclosure is inner at cable protective tube 14, and cable protective tube 14 bound adhesive tape 17 tight binding is outside in Grouting Pipe 15;
(2) releasable steel strand 13 are locked between outer lockplate and Core support plate by anchor clipper 9 under the prestress value of setting, after outer lockplate, Core support plate, electric heating melting high strength plastics plate and current flow heats plate 7 being connected by connector, the outside of recyclable for porous electric heating melting ground tackle combined type component is adopted overall plastic packaging form, its entirety by totally-enclosed in steel protective cover, again through being fixed on resistance to compression anchor slab, after having sealed, be connected with the forward end seal of protective cover, form grouting waterproof porous electric heating melting recyclable ground tackle combined integrate component;
(3) arrive precalculated position boring with jumbolter, common prefabricated pore-forming or high pressure reaming, after prefabricated pore-forming terminates, carry out hole operation clearly immediately, adopt cementation and slip casting displacement, by water/binder ratio be 0.35 ~ 0.5 cement mortar injection hole bottom replace slurries, by step (2) in grouting waterproof porous electric heating melting recyclable ground tackle combined integrate component send into design attitude, slip casing by pressure is adopted to inject cement mortar, in after this 0 ~ 24 hour, according to strata condition, secondary pressure benefit slurry can be carried out to anchoring section and improve quality further;
(4) after releasable steel strand 13 complete as the function of anchor cable, start the recovery carrying out steel strand 13, namely light-weight jack is utilized, remove intermediate plate successively in order, moveable anchor and pedestal backing plate, by step (1) in electric lead 16 connect with special low-tension current equipment, after 10 minutes, outer lockplate and Core support plate are separated, anchor clipper 9 also opens along with the separation of half anchor clipper, steel strand rotate by following steel stranded wire clamper, complete push-and-pull process simultaneously, steel strand are discharged from ground tackle, easily steel strand can be got loose, steel strand recovery is carried out again with hoist engine.
Embodiment two
As Fig. 5, shown in Fig. 7 and Figure 12, porous electric heating melting of the present invention recyclable ground tackle combined type component comprises the first outer lockplate 1 and the second outer lockplate 2, described first, two outer lockplates 1, the first Core support plate 3 and the second Core support plate 4 is provided with, described first between 2, two Core support plates 3, 4 respectively near first, two outer lockplates 1, 2 are arranged, described first, two Core support plates 3, the first electric heating melting high strength plastics plate 5 and the second electric heating melting high strength plastics plate 6, described first is provided with between 4, two electric heating melting high strength plastics plates 5, 6 respectively near first, two Core support plates 3, 4 are arranged, and described first, two electric heating melting high strength plastics plates 5, current flow heats plate 7 is provided with, described first outer lockplate 1 between 6, second outer lockplate 2, first Core support plate 3, second Core support plate 4, first electric heating melting high strength plastics plate 5, second electric heating melting high strength plastics plate 6 and current flow heats plate 7 are fixed together by connector, clamping device is provided with between described first outer lockplate 1 and the first Core support plate 3, also clamping device is provided with between described second outer lockplate 2 and the second Core support plate 4, described clamping device is made up of two symmetrical half clamping devices, two and half clamping devices are located on outer lockplate and Core support plate respectively, the two ends of described connector are respectively arranged with a spring 8, described spring 8, between the termination of connector and adjacent Core support plate, described current flow heats plate 7 is connected with wire 12.
Preferably, wherein said connector is bolt 10, this bolt 10 is high-strength set bolt, the quantity of described bolt is 6, it is in axially uniform or symmetrical uniform, bolt 10 is successively through the first outer lockplate 1, first Core support plate 3, first electric heating melting high strength plastics plate 5, current flow heats plate 7, second electric heating melting high strength plastics plate 6, use nut 11 fastening after second Core support plate 4 and the second outer lockplate 2, the two ends of described bolt 10 are respectively arranged with spring 8 described in, one of them spring 8 is between bolt 10 head and the first Core support plate 3, another spring 8 is between nut 11 and the second Core support plate 4.Spring can be selected and simplification, and its effective length is 1 ~ 50mm.
Preferably, wherein said clamping device is circular anchor clipper 9, the quantity of anchor clipper 9 is 4, anchor clipper 9 is centrosymmetric layout, described anchor clipper 9 is made up of half anchor clipper of two symmetrical semicirculars in shape respectively, described half anchor clipper is 2 lobes, and intermediate plate pattern is screw type, and two and half anchor clippers are located on outer lockplate and Core support plate respectively.
Preferably, wherein said first, two outer lockplates 1, the external surface of 2 is all rectangle, described first, two outer lockplates 1, the inner surface of 2, namely the side of half anchor clipper is provided with all for facing directly, described first, two Core support plates 3, the side being provided with half anchor clipper of 4 is all for facing directly, first, two Core support plates 3, the side relative to half anchor clipper of 4 is all for facing directly, the side near the first Core support plate 3 of described first electric heating melting high strength plastics plate 5 and the side near current flow heats plate 7 are all for facing directly, the side near the second Core support plate 4 of the second electric heating melting high strength plastics plate 6 and the side near current flow heats plate 7 are all for facing directly.
Preferably, wherein said current flow heats plate 7 is rectangular slab or circular arc plate, the size of current flow heats plate 7 is less than, be equal to or greater than first and second electric heating melting high strength plastics plate 5,6 be adjacent, and current flow heats plate 7 is built in the fabricated structure of electric hot plate for electric heating bar.
Preferably, first and second outer lockplate 1,2 wherein said and first and second Core support plate 3,4 are all made up of aluminium alloys material.
Preferably, first and second electric heating melting high strength plastics plate 5,6 wherein said is PA66 engineering plastics.
Preferably, wherein said current flow heats plate 7 is made up of copper, steel, irony, aluminium matter or glass fiber reinforced plastic material.
In the present embodiment, the thickness of electric heating melting high strength plastics plate is 2 times of embodiment one thickness.Detachable steel strand are 15.20mm by 4 nominal diameters, and intensity rank is that the un-bonded prestressed steel strand of 1860MPa is formed.This non-bending steel cable is made up of with anti-corrosion grease layer 19 and high-density polyethylene resin sheath 18 several strand cores 131.In the present embodiment, spring 8 can adopt rigid pad pattern, and high-strength set bolt axis is locked.
Shown in Figure 12, the present invention utilizes the construction method of porous electric heating melting recyclable ground tackle combined type component, comprises the following steps:
(1) be connected with electric lead 16 by wire 12, electric lead 16 bound adhesive tape 17 water-protected enclosure is outside at detachable steel strand 13;
(2) releasable steel strand 13 are locked between outer lockplate and Core support plate by anchor clipper 9 under the prestress value of setting, after outer lockplate, Core support plate, electric heating melting high strength plastics plate and current flow heats plate 7 being connected by connector, the outside of recyclable for porous electric heating melting ground tackle combined type component is adopted overall plastic packaging form, its entirety by totally-enclosed in steel protective cover, again through being fixed on resistance to compression anchor slab, after having sealed, be connected with the forward end seal of protective cover, form grouting waterproof porous electric heating melting recyclable ground tackle combined integrate component;
(3) arrive precalculated position boring with jumbolter, common prefabricated pore-forming or high pressure reaming, after prefabricated pore-forming terminates, carry out hole operation clearly immediately, adopt cementation and slip casting displacement, by water/binder ratio be 0.35 ~ 0.5 cement mortar injection hole bottom replace slurries, by step (2) in grouting waterproof porous electric heating melting recyclable ground tackle combined integrate component send into design attitude, slip casing by pressure is adopted to inject cement mortar, in after this 0 ~ 24 hour, according to strata condition, secondary pressure benefit slurry can be carried out to anchoring section and improve quality further;
(4) after releasable steel strand 13 complete as the function of anchor cable, start the recovery carrying out steel strand 13, namely light-weight jack is utilized, remove intermediate plate successively in order, moveable anchor and pedestal backing plate, by step (1) in electric lead 16 connect with special low-tension current equipment, after 10 minutes, outer lockplate and Core support plate are separated, anchor clipper 9 also opens along with the separation of half anchor clipper, steel strand rotate by following steel stranded wire clamper, complete push-and-pull process simultaneously, steel strand are discharged from ground tackle, easily steel strand can be got loose, steel strand recovery is carried out again with hoist engine.
Embodiment three
As Fig. 6, shown in Fig. 8 and Figure 10, porous electric heating melting of the present invention recyclable ground tackle combined type component comprises the first outer lockplate 1 and the second outer lockplate 2, described first, two outer lockplates 1, the first Core support plate 3 and the second Core support plate 4 is provided with, described first between 2, two Core support plates 3, 4 respectively near first, two outer lockplates 1, 2 are arranged, described first, two Core support plates 3, the first electric heating melting high strength plastics plate 5 and the second electric heating melting high strength plastics plate 6, described first is provided with between 4, two electric heating melting high strength plastics plates 5, 6 respectively near first, two Core support plates 3, 4 are arranged, and described first, two electric heating melting high strength plastics plates 5, current flow heats plate 7 is provided with, described first outer lockplate 1 between 6, second outer lockplate 2, first Core support plate 3, second Core support plate 4, first electric heating melting high strength plastics plate 5, second electric heating melting high strength plastics plate 6 and current flow heats plate 7 are fixed together by connector, clamping device is provided with between described first outer lockplate 1 and the first Core support plate 3, also clamping device is provided with between described second outer lockplate 2 and the second Core support plate 4, described clamping device is made up of two symmetrical half clamping devices, two and half clamping devices are located on outer lockplate and Core support plate respectively, the two ends of described connector are respectively arranged with a spring 8, described spring 8, between the termination of connector and adjacent Core support plate, described current flow heats plate is connected with wire 12.
Preferably, wherein said connector is bolt 10, this bolt 10 is high-strength set bolt, the quantity of described bolt 10 is 4, it is in axially uniform or symmetrical uniform, bolt 10 is successively through the first outer lockplate 1, first Core support plate 3, first electric heating melting high strength plastics plate 5, current flow heats plate 7, second electric heating melting high strength plastics plate 6, use nut 11 fastening after second Core support plate 4 and the second outer lockplate 2, the two ends of described bolt 10 are respectively arranged with spring 8 described in, one of them spring 8 is between bolt 10 head and the first Core support plate 3, another spring 8 is between nut 11 and the second Core support plate 4.Spring can be selected and simplification, and its effective length is 1 ~ 50mm.
Preferably, wherein said clamping device is circular anchor clipper 9, the quantity of anchor clipper 9 is 5, described anchor clipper 9 is made up of half anchor clipper of two symmetrical semicirculars in shape respectively, described half anchor clipper is 4 lobes, intermediate plate pattern is linear pattern, and two and half anchor clippers are located on outer lockplate and Core support plate respectively.
Preferably, wherein said first, two outer lockplates 1, the external surface of 2 is all rectangle, described first, two outer lockplates 1, the inner surface of 2, namely the side of half anchor clipper is provided with all for facing directly, described first, two Core support plates 3, the side being provided with half anchor clipper of 4 is all cambered surface, first, two Core support plates 3, the side relative to half anchor clipper of 4 is all cambered surface, the side near the first Core support plate 3 of described first electric heating melting high strength plastics plate 5 and the side near current flow heats plate 7 are all for facing directly, the side near the second Core support plate 4 of the second electric heating melting high strength plastics plate 6 and the side near current flow heats plate 7 are all for facing directly.
Preferably, wherein said current flow heats plate 7 is rectangular slab or circular arc plate, the size of current flow heats plate 7 is less than, be equal to or greater than first and second electric heating melting high strength plastics plate 5,6 be adjacent, and current flow heats plate 7 is built in the fabricated structure of electric hot plate for heating wire.
Preferably, first and second outer lockplate 1,2 wherein said and first and second Core support plate 3,4 are all made up of ferrous material.
Preferably, first and second electric heating melting high strength plastics plate 5,6 wherein said is PEI engineering plastics.
Preferably, wherein said current flow heats plate 7 is made up of copper, steel, irony, aluminium matter or glass fiber reinforced plastic material.
In the present embodiment, detachable steel strand 13 are 17.8mm by 5 nominal diameters, and intensity rank is that the un-bonded prestressed steel strand of 1860MPa is formed.
The present invention utilizes the construction method of porous electric heating melting recyclable ground tackle combined type component identical with the construction method in embodiment one.
Embodiment four
As Fig. 9, shown in Fig. 4 and Figure 10, porous electric heating melting of the present invention recyclable ground tackle combined type component comprises the first outer lockplate 1 and the second outer lockplate 2, described first, two outer lockplates 1, the first Core support plate 3 and the second Core support plate 4 is provided with, described first between 2, two Core support plates 3, 4 respectively near first, two outer lockplates 1, 2 are arranged, described first, two Core support plates 3, the first electric heating melting high strength plastics plate 5 and the second electric heating melting high strength plastics plate 6, described first is provided with between 4, two electric heating melting high strength plastics plates 5, 6 respectively near first, two Core support plates 3, 4 are arranged, and described first, two electric heating melting high strength plastics plates 5, current flow heats plate 7 is provided with, described first outer lockplate 1 between 6, second outer lockplate 2, first Core support plate 3, second Core support plate 4, first electric heating melting high strength plastics plate 5, second electric heating melting high strength plastics plate 6 and current flow heats plate 7 are fixed together by connector, clamping device is provided with between described first outer lockplate 1 and the first Core support plate 3, also clamping device is provided with between described second outer lockplate 2 and the second Core support plate 4, described clamping device is made up of two symmetrical half clamping devices, two and half clamping devices are located on outer lockplate and Core support plate respectively, the two ends of described connector are respectively arranged with a spring 8, described spring 8, between the termination of connector and adjacent Core support plate, described current flow heats plate 7 is connected with wire 12.
Preferably, wherein said connector is bolt 10, this bolt 10 is high-strength set bolt, the quantity of described bolt 10 is 4, it is in axially uniform or symmetrical uniform, bolt 10 is successively through the first outer lockplate 1, first Core support plate 3, first electric heating melting high strength plastics plate 5, current flow heats plate 7, second electric heating melting high strength plastics plate 6, use nut 11 fastening after second Core support plate 4 and the second outer lockplate 2, the two ends of described bolt 10 are respectively arranged with spring 8 described in, one of them spring 8 is between bolt 10 head and the first Core support plate 3, another spring 8 is between nut 11 and the second Core support plate 4.Spring can be selected and simplification, and its effective length is 1 ~ 50mm.
Preferably, wherein said clamping device is circular anchor clipper 9, the quantity of anchor clipper 9 is 6, described anchor clipper 9 is made up of half anchor clipper of two symmetrical semicirculars in shape respectively, described half anchor clipper is 3 lobes, intermediate plate pattern is linear pattern, and two and half anchor clippers are located on outer lockplate and Core support plate respectively.
Preferably, wherein said first, two outer lockplates 1, the external surface of 2 is all rectangle, described first, two outer lockplates 1, the inner surface of 2, namely the side of half anchor clipper is provided with all for facing directly, described first, two Core support plates 3, the side being provided with half anchor clipper of 4 is all cambered surface, first, two Core support plates 3, the side relative to half anchor clipper of 4 is all cambered surface, the side near the first Core support plate 3 of described first electric heating melting high strength plastics plate 5 and the side near current flow heats plate 7 are all for facing directly, the side near the second Core support plate 4 of the second electric heating melting high strength plastics plate 6 and the side near current flow heats plate 7 are all for facing directly.
Preferably, wherein said current flow heats plate 7 is rectangular slab or circular arc plate, the size of current flow heats plate 7 is less than, be equal to or greater than first and second electric heating melting high strength plastics plate 5,6 be adjacent, and current flow heats plate 7 is built in the fabricated structure of electric hot plate for heating wire.
Preferably, first and second outer lockplate 1,2 wherein said and first and second Core support plate 3,4 are all made up of copper material.
Preferably, first and second electric heating melting high strength plastics plate 5,6 wherein said is PAI engineering plastics.
Preferably, wherein said current flow heats plate 7 is made up of copper, steel, irony, aluminium matter or glass fiber reinforced plastic material.
Detachable steel strand 13 in the present embodiment are 12.7mm by 6 nominal diameters, and intensity rank is that the un-bonded prestressed steel strand of 1860MPa is formed.
The present invention utilizes the construction method of porous electric heating melting recyclable ground tackle combined type component identical with the construction method in embodiment one.
Embodiment five
As is illustrated by figs. 11 and 12, porous electric heating melting of the present invention recyclable ground tackle combined type component comprises the first outer lockplate 1 and the second outer lockplate 2, described first, two outer lockplates 1, the first Core support plate 3 and the second Core support plate 4 is provided with, described first between 2, two Core support plates 3, 4 respectively near first, two outer lockplates 1, 2 are arranged, described first, two Core support plates 3, the first electric heating melting high strength plastics plate and the second electric heating melting high strength plastics plate is provided with, described first between 4, two electric heating melting high strength plastics plates are respectively near first, two Core support plates 3, 4 are arranged, and described first, current flow heats plate is provided with, described first outer lockplate 1 between two electric heating melting high strength plastics plates, second outer lockplate 2, first Core support plate 3, second Core support plate 4, first electric heating melting high strength plastics plate, second electric heating melting high strength plastics plate and current flow heats plate are fixed together by connector, clamping device is provided with between described first outer lockplate 1 and the first Core support plate 3, also clamping device is provided with between described second outer lockplate 2 and the second Core support plate 4, described clamping device is made up of two symmetrical half clamping devices, two and half clamping devices are located on outer lockplate and Core support plate respectively, the two ends of described connector are respectively arranged with a spring, described spring, between the termination of connector and adjacent Core support plate, described current flow heats plate is connected with wire.
Preferably, wherein said connector is bolt, this bolt is high-strength set bolt, the quantity of described bolt is 6, it is in axially uniform or symmetrical uniform, the outer lockplate 1 of screw bolt passes first, first Core support plate 3, first electric heating melting high strength plastics plate, current flow heats plate, second electric heating melting high strength plastics plate, second Core support plate 4 and the rear fastening nuts of the second outer lockplate 2, the two ends of described bolt are respectively arranged with spring described in, one of them spring is between bolt head and the first Core support plate 3, another spring is between nut and the second Core support plate 4.Spring can be selected and simplification, and its effective length is 1 ~ 50mm.
Preferably, wherein said clamping device is circular anchor clipper 9, the quantity of anchor clipper 9 is 4, anchor clipper 9 is centrosymmetric layout, described anchor clipper 9 is made up of half anchor clipper of two symmetrical semicirculars in shape respectively, described half anchor clipper is 3 lobes, and intermediate plate pattern is linear pattern, and two and half anchor clippers are located on outer lockplate and Core support plate respectively.
Preferably, wherein the external surface of first and second outer lockplate 1,2 is all the overall structure being removed local by circular machinery, and the finished surface after milling is overall through hardness process.The inner surface of first and second outer lockplate 1,2 described, namely the side of half anchor clipper is provided with all for facing directly, the side being provided with half anchor clipper of first and second Core support plate 3,4 described is all for facing directly, the side relative to half anchor clipper of first and second Core support plate 3,4 is all for facing directly, the side near the first Core support plate 3 of described first electric heating melting high strength plastics plate and the side near current flow heats plate are all for facing directly, and the side near the second Core support plate 4 of the second electric heating melting high strength plastics plate and the side near current flow heats plate are all for facing directly.
Preferably, wherein said current flow heats plate is rectangular slab or circular arc plate, the size of current flow heats plate is less than, be equal to or greater than first and second electric heating melting high strength plastics plate be adjacent, current flow heats plate is the fabricated structure that electrical bar inserts electric hot plate, also can adopt the square electric hot pin jacket structure of simplification.
Preferably, first and second outer lockplate 1,2 wherein said and first and second Core support plate 3,4 are all made up of steel material.
Preferably, first and second electric heating melting high strength plastics plate wherein said is PVDF engineering plastics.
Preferably, wherein said current flow heats plate is made up of copper, steel, irony, aluminium matter or glass fiber reinforced plastic material.
Detachable steel strand 13 in the present embodiment are 15.2mm by 4 nominal diameters, and intensity rank is that the un-bonded prestressed steel strand of 1860MPa is formed.Detachable steel strand are made up of with anti-corrosion grease layer 19 and high-density polyethylene resin sheath 18 several strand cores 131.In the present embodiment, spring can adopt rigid anti-dropping gasket pattern, and high-strength set bolt axis is locked.
The present invention utilizes the construction method of porous electric heating melting recyclable ground tackle combined type component identical with the construction method in embodiment one.
Porous electric heating melting recyclable ground tackle combined integrate component in the present invention also can be connected with bellows enlarging anchor rod.The chassis of resistance to compression anchor slab and bellows enlarging anchor rod fixes, and electric lead is through the cable protective tube of bellows enlarging anchor rod, and after having sealed, electric lead is outside at detachable steel strand by binding adhesive tape water-protected enclosure again in the upper end of bellows enlarging anchor rod.Wherein, cable protective tube is same with the pattern that the Grouting Pipe of bellows enlarging anchor rod directly unites two into one within scope.
When this porous electric heating melting recyclable ground tackle combined integrate component adopts the structure be connected with bellows enlarging anchor rod, its construction method is: first arrive precalculated position boring with jumbolter, and carry out mechanical hole reaming or high-pressure jetting reaming, carry out balloon inflation section and expand the prefabricated pore-forming of body; After prefabricated pore-forming terminates, carry out immediately being in the milk and slip casting displacement, by water/binder ratio be 0.35 ~ 0.5 cement mortar injection hole bottom replace slurries, the structure that porous electric heating melting of the present invention recyclable ground tackle combined integrate component is connected with bellows enlarging anchor rod is sent into design attitude; Start high-pressure slip-casting through high-pressure slip-casting pipe, the flexible utricule that flexible material is made is launched into prefabrication state gradually, 0-24 hour after this, and can select to carry out secondary pressure benefit slurry to anchoring section and improve quality further, above-mentioned work progress completes.
Steel strand reclaim: after releasable steel strand complete as the using function of anchor cable, can start to carry out steel strand recovery.Utilize light-weight jack, remove intermediate plate, moveable anchor and pedestal backing plate in order successively.The electric lead of recyclable for porous electric heating melting ground tackle combined type component and special low-tension current equipment are connected, after 10 minutes, porous electric heating melting recyclable ground tackle combined integrate member front end locking device is opened, with steel stranded wire clamper, steel strand are rotated, complete push-and-pull process simultaneously, steel strand are discharged from ground tackle, can conveniently steel strand be got loose, then carry out steel strand recovery with hoist engine.
Above-described embodiment is only be described the preferred embodiment of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that those of ordinary skill in the art make technical scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determines.
Claims (11)
1. a porous electric heating melting recyclable ground tackle combined type component, it is characterized in that: comprise the first outer lockplate and the second outer lockplate, described first, the first Core support plate and the second Core support plate is provided with between two outer lockplates, described first, two Core support plates are respectively near first, two outer lockplates are arranged, described first, the first electric heating melting high strength plastics plate and the second electric heating melting high strength plastics plate is provided with between two Core support plates, described first, two electric heating melting high strength plastics plates are respectively near first, two Core support plates are arranged, described first, current flow heats plate is provided with between two electric heating melting high strength plastics plates, described first outer lockplate, second outer lockplate, first Core support plate, second Core support plate, first electric heating melting high strength plastics plate, second electric heating melting high strength plastics plate and current flow heats plate are fixed together by connector, clamping device is provided with between described first outer lockplate and the first Core support plate, also clamping device is provided with between described second outer lockplate and the second Core support plate, described clamping device is made up of two symmetrical half clamping devices, two and half clamping devices are located on outer lockplate and Core support plate respectively, the two ends of described connector are respectively arranged with a spring, described spring is between the termination of connector and adjacent Core support plate, described current flow heats plate is connected with wire.
2. porous electric heating melting according to claim 1 recyclable ground tackle combined type component, it is characterized in that: described first, the external surface of two outer lockplates is all circular, arc, rectangle, square or the overall structure by above-mentioned shape machinery removal local, described first, the inner surface of two outer lockplates, namely the side of half anchor clipper is provided with all for facing directly, cambered surface or folding face, described first, the side being provided with half anchor clipper of two Core support plates is all for facing directly, cambered surface or folding face, first, the side relative to half anchor clipper of two Core support plates is all for facing directly, cambered surface or folding face, the side near the first Core support plate of described first electric heating melting high strength plastics plate and the side near current flow heats plate are all for facing directly, cambered surface or folding face, the side near the second Core support plate of the second electric heating melting high strength plastics plate and the side near current flow heats plate are all for facing directly, cambered surface or folding face.
3. porous electric heating melting according to claim 2 recyclable ground tackle combined type component, it is characterized in that: described connector is bolt, the quantity of described bolt is at least one, the outer lockplate of screw bolt passes first, first Core support plate, first electric heating melting high strength plastics plate, current flow heats plate, second electric heating melting high strength plastics plate, fastening nuts is used after second Core support plate and the second outer lockplate, the two ends of described bolt are respectively arranged with spring described in, one of them spring is between bolt head and the first Core support plate, another spring is between nut and the second Core support plate.
4. porous electric heating melting according to claim 3 recyclable ground tackle combined type component, is characterized in that: the quantity of described bolt is 1 ~ 9, and it is in axially uniform or symmetrical uniform.
5. porous electric heating melting according to claim 4 recyclable ground tackle combined type component, it is characterized in that: described clamping device is circular anchor clipper, described anchor clipper is made up of half anchor clipper of two symmetrical semicirculars in shape respectively, and two and half anchor clippers are located on outer lockplate and Core support plate respectively.
6. porous electric heating melting according to claim 5 recyclable ground tackle combined type component, it is characterized in that: described current flow heats plate is rectangular slab or circular arc plate, the size of current flow heats plate is less than, be equal to or greater than first and second electric heating melting high strength plastics plate be adjacent, and the combined type that current flow heats plate is electrical bar pattern, heating wire winding formula, electrical bar insert the combined type of electric hot plate, electric heating bar is built in electric hot plate, heating wire are built in the combined type that the combined type of electric hot plate or electrothermal tube are built in electric hot plate.
7. porous electric heating melting according to claim 6 recyclable ground tackle combined type component, is characterized in that: first and second outer lockplate described and first and second Core support plate are all made up of steel, irony, copper, aluminium matter, plastics or glass-reinforced plastic material.
8. porous electric heating melting according to claim 7 recyclable ground tackle combined type component, it is characterized in that: first and second electric heating melting high strength plastics plate described is the special engineering plastics of PPS, PSF, PASF, PES, or be the engineering plastics of PEEK, PPO, PPE, PC, PBT, POM, PA, PET, PEI, PAI, PI, or be positioned at the engineering material of less than 400 degree for fusing point.
9. porous electric heating melting according to claim 8 recyclable ground tackle combined type component, is characterized in that: described current flow heats plate is made up of copper, steel, irony, aluminium matter or glass fiber reinforced plastic material.
10. porous electric heating melting according to claim 9 recyclable ground tackle combined type component, it is characterized in that: described half anchor clipper is 2 ~ 4 lobes, intermediate plate pattern is linear pattern or spiral line type.
11. construction methods utilizing the porous electric heating melting recyclable ground tackle combined type component described in claim 1 ~ 10 any one, is characterized in that, comprise the following steps:
(1) wire is connected with electric lead, and electric lead water-protected enclosure is inner at cable protective tube, the bound adhesive tape tight binding of cable protective tube is outside in Grouting Pipe, or electric lead bound adhesive tape water-protected enclosure is outside at detachable steel strand, or establishes separately pipe relief electric lead poling to form;
(2) releasable steel strand are locked between outer lockplate and Core support plate by anchor clipper under the prestress value of setting, after outer lockplate, Core support plate, electric heating melting high strength plastics plate and current flow heats plate being connected by connector, the outside of recyclable for porous electric heating melting ground tackle combined type component is adopted overall plastic packaging form, its entirety by totally-enclosed in steel protective cover, again through being fixed on resistance to compression anchor slab, after having sealed, be connected with the forward end seal of protective cover, form grouting waterproof porous electric heating melting recyclable ground tackle combined integrate component;
(3) arrive precalculated position boring with jumbolter, common prefabricated pore-forming or high pressure reaming, after prefabricated pore-forming terminates, carry out hole operation clearly immediately, adopt cementation and slip casting displacement, by water/binder ratio be 0.35 ~ 0.5 cement mortar injection hole bottom replace slurries, by step (2) in grouting waterproof porous electric heating melting recyclable ground tackle combined integrate component send into design attitude, slip casing by pressure is adopted to inject cement mortar, in after this 0 ~ 24 hour, according to strata condition, secondary pressure benefit slurry can be carried out to anchoring section and improve quality further;
(4) after releasable steel strand complete as the function of anchor cable, start the recovery carrying out steel strand, namely light-weight jack is utilized, remove intermediate plate successively in order, moveable anchor and pedestal backing plate, by step (1) in electric lead and special low-tension current equipment connect, after 10 minutes, outer lockplate and Core support plate are separated, anchor clipper also opens along with the separation of half anchor clipper, steel strand rotate by following steel stranded wire clamper, complete push-and-pull process simultaneously, steel strand are discharged from ground tackle, easily steel strand can be got loose, steel strand recovery is carried out again with hoist engine.
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| CN201410534911.2A CN104264670B (en) | 2014-10-11 | 2014-10-11 | Porous electric heating melting recyclable ground tackle combined type member and utilize its construction method |
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| CN201410534911.2A CN104264670B (en) | 2014-10-11 | 2014-10-11 | Porous electric heating melting recyclable ground tackle combined type member and utilize its construction method |
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| CN109975111A (en) * | 2019-03-29 | 2019-07-05 | 镇江市建设工程质量检测中心有限公司 | A kind of fixed device of anchor clipper |
| CN110374102A (en) * | 2019-07-01 | 2019-10-25 | 中铁建华南建设有限公司 | Supporting anchorage cable and supporting construction |
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| CN113216171A (en) * | 2021-05-18 | 2021-08-06 | 江苏景源万河环境科技有限公司 | Prestress applying and anchoring device and method for prestressed anchor rod |
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| CN110374102A (en) * | 2019-07-01 | 2019-10-25 | 中铁建华南建设有限公司 | Supporting anchorage cable and supporting construction |
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