CN110273386A - A kind of passive side slope protective screen and its construction method - Google Patents
A kind of passive side slope protective screen and its construction method Download PDFInfo
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- CN110273386A CN110273386A CN201910611050.6A CN201910611050A CN110273386A CN 110273386 A CN110273386 A CN 110273386A CN 201910611050 A CN201910611050 A CN 201910611050A CN 110273386 A CN110273386 A CN 110273386A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F7/00—Devices affording protection against snow, sand drifts, side-wind effects, snowslides, avalanches or falling rocks; Anti-dazzle arrangements ; Sight-screens for roads, e.g. to mask accident site
- E01F7/04—Devices affording protection against snowslides, avalanches or falling rocks, e.g. avalanche preventing structures, galleries
- E01F7/045—Devices specially adapted for protecting against falling rocks, e.g. galleries, nets, rock traps
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- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The invention discloses a kind of passive side slope protective screens, are made of pull-up anchor line 1, embedded anchor bar 2, steel rope net 3, pressure-reducing ring 4, supporting rope 5, steel column 6, articulated joints 7, pedestal B8, pedestal A9, support rod 10 and grid 11；The supporting rope 5 is made of upper supporting rope 51, middle supporting rope 52 and lower supporting rope 53, and the steel rope net 3 is made of upper gear steel rope net 31 and lower block steel rope net 32.The invention also discloses a kind of passive side slope protective screen construction method, including surveying setting-out, excavation of foundation pit, embedded anchor bar and basic concrete, pedestal installation, steel column installation, the installation of the arrangement of pressure-reducing ring, upper supporting rope, the installation of lower supporting rope, steel rope net is perfused installs by group #, grid.The present invention has the function of " interception " of traditional passive side slope protective screen, while leading into preset " pocket " to the falling rocks after " interception ", can open " pocket " bottom, carry out unloading cleaning to falling rocks.
Description
Technical field
The invention discloses a kind of passive side slope protective screen and its construction methods, belong to engineering slope protection technology field.
Background technique
Traditional side slope protective screen can be divided into passive side slope protective screen and two kinds of active side slope protective screen, respectively reference can be made to
FIG. 1 to FIG. 4.
The main function of active side slope protective screen is to fix levee slope or massif first；Secondly, if any the feelings to fall off
Condition occurs, and the zone of action of stone can be reduced in a certain range, reach reduce massif or side slope to periphery highway or
It is the damage in village, Tour region.
Active side slope protective screen is usually made of anchor pole, supporting rope and steel rope net, it is characterized in that will can partially assemble lotus
Load is uniformly transferred around to give full play to protection effect of whole system, i.e., part is loaded, the whole network interlink function, to make to prevent
Protective net can bear biggish load and reduce single anchor rod anchoring force request.
Active side slope protective screen disadvantage are as follows: since protective net weight is big, area coverage is big, and rubble cleaning difficulty is big, causes
The rubble to fall off cannot be cleared up away in time, cause protective net to be in and continue stress, it is there are catch net once damaged, it makes
The risk of the accident potential of Cheng Geng great；Additionally there are the deficiency that unloading is difficult, application is limited by many factors.
Passive side slope protective screen is that the fence type flexibility stone blocking net based on wire rope net is set to corresponding positions on slope
It sets, the stone that tumbles for intercepting on inclined-plane slope destroys the object protected to avoid it, and passive side slope protective screen also referred to as blocks sometimes
Stone net.
Passive side slope protective screen is usually made of steel column, supporting rope, steel rope net, pull-up anchor line, anchor pole and pedestal, feature
It is that supporting rope and pull-up anchor line position are provided with pressure-reducing ring (Energy eliminating ring), pressure-reducing ring can effectively slow down falling rocks to passive
Huge power potential energy is effectively dissolved in the impact of side slope protective screen.
Passive side slope protective screen disadvantage are as follows: protective net is easy a large amount of falling rocks of accumulation, is formed " bulge ", protective net is similarly in
Continue stress, the stone that falls off often is periodic cleaning or irregularly clears up according to the amount of falling off, and is influenced by continuing load, clears up
" bulge " phenomenon is difficult to eliminate and restore to the original state afterwards, effect certainly will be caused to reduce over time.It is fallen moreover, existing in scale removal process
Stone risk, it is possible to the defect of secondary disaster occur.
In conclusion all there is the shortcomings that cannot unloading in time in active side slope protective screen and passive side slope protective screen, especially
The falling rocks accumulation of passive side slope protective screen is larger to the injury of protective net, and in falling rocks scale removal process, cleaning personnel, which need to enter, to be fallen
All day efficiency area, be easy to cause the injury to personnel, and cleaning personnel must transport manually falling rocks from protective net two sides when cleaning, clearly
Reason is difficult, and construction efficiency is low.
Summary of the invention
The technical problem to be solved by the present invention is to solve traditional passive side slope protective screen to be easy accumulation falling rocks, formation " bulge "
And cleaning may cause the deficiencies of injury to cleaning personnel not in time, invent a kind of off-loadable passive side slope protective screen.
The technical solution of present invention solution above-mentioned technical problem are as follows:
A kind of passive side slope protective screen, it is characterised in that: by pull-up anchor line 1, embedded anchor bar 2, steel rope net 3, pressure-reducing ring 4,
Supporting rope 5, steel column 6, articulated joints 7, pedestal B8, pedestal A9, support rod 10 and grid 11 form；
The supporting rope 5 is made of upper supporting rope 51, middle supporting rope 52 and lower supporting rope 53；
The pedestal B8 is made of pedestal B ground anchor bolt 81, lower supporting rope hanging seat 82 and support rod connecting plate 83；Earth anchor spiral shell
Bolt 81 is used for fixed pedestal B8；Lower supporting rope hanging seat 82 is opened when protective net unloads for fixed lower 53 end of supporting rope；
Support rod connecting plate 83 is used for 10 lower end of connection support bar.
The pedestal A9 is made of pedestal A ground anchor bolt 91 and steel column connecting plate 92；Wherein, pedestal A ground anchor bolt 91 is used
In fixed pedestal A9, steel column connecting plate 92 is for connecting 6 lower end of steel column.
The steel rope net 3 is made of upper gear steel rope net 31 and lower block steel rope net 32；It is described it is upper gear steel rope net 31 top and
Lower part is fixed by upper supporting rope 51 and middle supporting rope 52 respectively, and the left and right sides of the upper gear steel rope net 31 is adjacent by two respectively
Steel column 6 it is fixed；The upper and lower part of the lower block steel rope net 32 is fixed by middle supporting rope 52 and lower supporting rope 53 respectively, described
The two sides of lower block steel rope net 32 are fixed by two adjacent supports bars 10；The steel rope net 3 and supporting rope 5, steel column 6, support rod 10
Mode of connection be all made of suture and fix.
The top of the steel column 6 and the hanging seat that supporting rope 5 is equipped with the junction of articulated joints 7；The steel column 6 pushes up
The hanging seat in portion is connected with embedded anchor bar 2 by pulling up anchor line 1.
The upper supporting rope 51 connects the top hanging seat of two adjacent steel columns 6, middle supporting rope 52 connect adjacent steel column 6 with
The hanging seat of the junction of articulated joints 7, lower supporting rope 53 connect the lower supporting rope hanging seat 82 of adjacent susceptors B8, all supporting ropes
5 are concatenating pressure-reducing ring 4 at steel column 6 or support rod 10.
The articulated joints 7 is made of connecting flange 71, connection intermediate plate 72 and connection bolt 73, by connection method when connection
Orchid 71 is placed among two panels connection intermediate plate 72, and insertion connects bolt 73 and fastens after being directed at connecting hole.
A kind of passive side slope protective screen construction method, comprising the following steps:
1, surveying setting-out
To steel column pedestal and support rod base setting-out.
2, excavation of foundation pit
The foundation pit of pedestal is excavated.
3, embedded anchor bar and basic concrete is perfused
Pre-buried to concrete foundation progress anchor pole, can also drill installation anchor pole after foundation concrete is perfused.
4, pedestal is installed
Pedestal is inserted in foundation bolt and is tightened with nut.
5, steel column is installed
Pass through pull-up anchor line auxiliary installation steel column.
6, the arrangement of pressure-reducing ring
Pressure-reducing ring is distributed on the supporting rope of upper, middle and lower, is two distributions between every inter-network.
7, upper supporting rope installation
Supporting rope is installed on the top hanging seat of steel column, it will be on two with a rope card at away from 40 ± 4cm of pressure-reducing ring
Portion's supporting rope interconnects and (only consolidates power with 30% standard).
8, lower supporting rope installation
Supporting rope under being installed on the pedestal hanging seat of support rod, with a rope card by two at away from 40 ± 4cm of pressure-reducing ring
Bottom supporting rope interconnects and (only consolidates power with 30% standard).
9, steel rope net presses group #, and is unfolded between steel column according to corresponding position
Steel rope net and the supporting rope of upper, middle and lower three are fastened with suture rope.
10, grid is installed
Grid is fixed on steel rope net with suture, every square metre is fixed at 4 or more.
11, falling rocks is cleared up.
The rope card under unloading area (lower block steel rope net) on supporting rope is opened, then slowly loosens and is wound on pedestal B hanging seat
Lower supporting rope, falling rocks collecting region bottom just slowly opened, and falling rocks cleaning is carried out.
Technical solution of the present invention has the advantages that the present invention inherits " blocking for traditional passive side slope protective screen
Cut " function, while " guidance " theory is used, the falling rocks after " interception " is carried out effectively " guidance ", into preset " mouth
Bag " (falling rocks collecting region) can open " pocket " bottom under the security protection of protective net, carry out unloading cleaning to falling rocks, both
The possibility to worker injuries is avoided, also solves " bulge " phenomenon, protective net load greatly reduces, and clears up in falling rocks
Afterwards, protective net can after restore to the original state, substantially prolong the service life of protective net, have very high security performance, improve cleaning
Work efficiency.
Detailed description of the invention
Fig. 1 is the floor plan of active side slope protective screen
Fig. 2 is the cross-sectional view of active side slope protective screen
Fig. 3 is the three-dimensional elevation of passive side slope protective screen
Fig. 4 is the cross-sectional view of passive side slope protective screen
Fig. 5 is the three-dimensional structure schematic diagram of passive side slope protective screen
Fig. 6 is the cross-sectional view of passive side slope protective screen
Fig. 7 is pedestal A9 drawing
Fig. 8 is pedestal B8 drawing
Fig. 9 is 7 schematic diagram of articulated joints
In figure: 1- pulls up anchor line；2- embedded anchor bar；4- pressure-reducing ring；6- steel column；7- articulated connection；8- pedestal B；9- pedestal
A；10- support rod；Steel rope net is kept off on 31-；32- lower block steel rope net；The upper supporting rope of 51-；Supporting rope in 52-；Supporting rope under 53-；
71- connecting flange；72- connection intermediate plate；73- connection bolt；81- pedestal B ground anchor bolt；Supporting rope hanging seat under 82-；83- support
Bar connecting plate；91- pedestal A ground anchor bolt；92- steel column connecting plate.
Specific embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.
These attached drawings are simplified schematic diagram, and the basic structure of the invention will be illustrated schematically only, therefore it only shows
Show composition related to the present invention.
As shown in figure 5, a kind of passive side slope protective screen, by pull-up anchor line 1, embedded anchor bar 2, steel rope net 3, pressure-reducing ring 4, branch
Support rope 5, steel column 6, articulated joints 7, pedestal B8, pedestal A9, support rod 10 and grid 11 form.
The supporting rope 5 is made of upper supporting rope 51, middle supporting rope 52 and lower supporting rope 53；
As shown in figure 9, the articulated joints 7 is made of connecting flange 71, connection intermediate plate 72 and connection bolt 73, connect
When connecting flange 71 is placed among two panels connection intermediate plate 72, insertion connection and fastens bolt 73 after being directed at connecting hole.
As shown in figure 8, the pedestal B8 is by pedestal B ground anchor bolt 81, lower supporting rope hanging seat 82 and support rod connecting plate 83
Composition；Ground anchor bolt 81 is used for fixed pedestal B8；Lower supporting rope hanging seat 82 is for fixed lower 53 end of supporting rope, protective net unloading
When open；Support rod connecting plate 83 is used for 10 lower end of connection support bar.
As shown in fig. 7, the pedestal A9 is made of pedestal A ground anchor bolt 91 and steel column connecting plate 92；Wherein, pedestal A
Anchor bolt 91 is used for fixed pedestal A9, and steel column connecting plate 92 is for connecting 6 lower end of steel column.
As shown in figure 5, the steel rope net 3 is made of upper gear steel rope net 31 and lower block steel rope net 32；The upper gear steel rope net
31 upper and lower part is fixed by upper supporting rope 51 and middle supporting rope 52 respectively, the left and right sides difference of the upper gear steel rope net 31
It is fixed by two adjacent steel columns 6；The upper and lower part of the lower block steel rope net 32 is respectively by middle supporting rope 52 and lower supporting rope
53 is fixed, and the two sides of the lower block steel rope net 32 are fixed by two adjacent supports bars 10；The steel rope net 3 and supporting rope 5, steel column
6, the mode of connection of support rod 10 is all made of suture and fixes.
The top of the steel column 6 and the hanging seat that supporting rope 5 is equipped with the junction of articulated joints 7；The steel column 6 pushes up
The hanging seat in portion is connected with embedded anchor bar 2 by pulling up anchor line 1.
As shown in figure 5, the upper supporting rope 51 connects the top hanging seat of two adjacent steel columns 6, middle supporting rope 52 connects phase
The hanging seat with the junction of articulated joints 7 of adjacent steel column 6, lower supporting rope 53 connect the lower supporting rope hanging seat of adjacent susceptors B8
82, all supporting ropes 5 are concatenating pressure-reducing ring 4 at steel column 6 or support rod 10.
Articulated joints 7 as shown in Figure 5 and Figure 6 is made of connecting flange 71, connection intermediate plate 72 and connection bolt 73.Its
In, connecting flange 71 is welded and fixed with steel column 6 and connect, and connection intermediate plate 72 is welded and fixed with support rod 10 to be connect, connecting flange 71
Connecting flange 71 is placed among two panels connection intermediate plate 72 with connecting when intermediate plate 72 connects, alignment connecting hole insertion connection bolt 73
, it is connected as being flexibly connected.
As Fig. 6,7,8 and pedestal B8 shown in Fig. 9 are connected by pedestal B ground anchor bolt 81, lower supporting rope hanging seat 82 and support rod
Fishplate bar 83 forms；Pedestal A9 is made of pedestal A91 ground anchor bolt and steel column connecting plate 92, wherein ground anchor bolt by pedestal B8,
Entire pedestal is fixed by nuts after A9 bed bolt preformed hole；Lower supporting rope hanging seat 82 is for fixed lower 53 end of supporting rope, even
Connecing mode is to be intertwined and connected, and protective net is lightened restrictions on supporting rope when unloading at hanging seat；Support rod connecting plate 83 is for connecting branch
10 lower end of strut, is connected as being flexibly connected.
A kind of passive side slope protective screen construction method, comprising the following steps:
S1, surveying setting-out
Setting-out is measured to steel column and support rod base position by design before construction and in conjunction with site contour.Especially to mention
It is preceding that support rod base position is calculated according to the gradient.
S2, excavation of foundation pit
The place not thick to coating, when being excavated to basement rock and still end reaches projected depth, then the anchor hole in foundation pit
Upper foundation concrete is just perfused after anchor pole insertion basement rock and slip casting in Drilling rod aperture at position.
Simultaneously basic concrete is perfused in S3, embedded anchor bar
Pre-buried to concrete foundation progress anchor pole, can also drill installation anchor pole after foundation concrete is perfused.
S4, pedestal installation
Pedestal is inserted in foundation bolt and is tightened with nut.
S5, steel column installation
S5.1 will be placed in steel column inclined slope aspect and is located at steel column bottom at pedestal；
The link for pulling up anchor line is hung on the hanging seat of steel column top by S5.2, then will draw the other end of anchor pole with it is corresponding on
Draw anchor sleeve connect and use rope card it is temporarily fixed (setting is intermediate to reinforce and when drop-down anchor line, same pull-up anchor line install together or to
Pull-up anchor line is installed again after installing)；
Steel column is slowly lifted and is aligned pedestal by S5.3, and then steel column bottom is inserted into pedestal, is finally inserted connection spiral shell
Bar is simultaneously tightened；Then it connection support bar screw rod and tightens.
S5.4 is adjusted the orientation of steel column by pull-up anchor line by design orientation, is tensed pull-up anchor line and is fixed with rope
It is fixed.
The arrangement of S6, pressure-reducing ring
Pressure-reducing ring is distributed on the supporting rope of upper, middle and lower, is two distributions between every inter-network；
S7, upper supporting rope installation (middle supporting rope is identical)
The link end of first supporting rope is temporarily fixed to newel post and (is segmented starting steel when installing for each section by S7.1
Column) bottom, then raise straight supporting rope along the direction for being parallel to system trend and be placed in the downside of pedestal, and by pressure-reducing ring
Adjust it is in place (away from 50 ± 5cm of steel column, on same root supporting rope it is each across pressure-reducing ring be arranged symmetrically relative to steel column)；
The link of the supporting rope is hung on the top hanging seat of newel post by S7.2；It, will support with rope card at second steel column
Rope is fixed on the outside (only consolidating power with 30% standard) of hanging seat；Supporting rope is placed on sorrowful in hanging seat by third root steel column；So
Identical installation supporting rope is in the outside and inside of pedestal, on the hanging seat at the top of last root steel column of this section, then it is temporary with rope card
When fix；
S7.3 adjusts decompression ring position again, when firmly believing pressure-reducing ring all correct in place post-tensioning compact schemes ropes and with rope fixing
It is fixed；
Second upper support rope of S7.4 and first installation method are identical, only from first last root
Steel column is reversely installed to the direction of second steel column, and pressure-reducing ring be located at it is same across another side (when having pressure-reducing ring)；
Two upper support ropes are interconnected with a rope card at away from 40 ± 4cm of pressure-reducing ring and (are only consolidated with 30% standard
Power).
S8, the installation of lower supporting rope
The link of first supporting rope is hung on the hanging seat of newel post's pedestal by S8.1, then along the side for being parallel to system trend
Upwards, straightening supporting rope and it is placed in the downside of pedestal, and pressure-reducing ring is adjusted in place (away from 50 ± 5cm of steel column, same root support
On rope it is each across pressure-reducing ring be arranged symmetrically relative to steel column:, should be with the decompression of upper support rope when often across for single pressure-reducing ring
Ring is in diagonal relationship)；
Supporting rope is fixed on the outside (only consolidating power with 30% standard) of hanging seat with rope card at second pedestal by S8.2；
At second pedestal, supporting rope is placed on hanging seat inner underside；Outside and inner underside of the so identical installation supporting rope in pedestal,
Until the last one pedestal of this section and supporting rope is wrapped in the pedestal hanging seat on, then blocked with rope temporarily fixed；
S8.3 checks the whole correct post-tensioning compact schemes ropes in place of determining pressure-reducing ring and blocks fixation with rope；
S8.4 by above-mentioned steps install second supporting rope, but opposite direction install, and pressure-reducing ring be located at it is same across it is another
Side；
S8.5 is interconnected two root bottom part supporting ropes (only with 30% mark with a rope card at away from 40 ± 4cm of pressure-reducing ring
The solid power of standard), inner underside and the staggered dual-gripper rope structure in two, outside are formed so at same hanging seat.
S9, steel rope net press group #, and are unfolded between steel column according to corresponding position
S9.1 passes through steel cable upper edge of net mesh (same to throw the net while lifting by crane across interior two) with an extra lifting steel cable, and one
End is fixed on the top for closing on steel column, and the other end is fixed around its pedestal and temporarily by another steel column seat；
S9.2 is tensed lifting rope with euphroe, until steel rope net rises to the level of supporting rope, then with extra
Net is temporarily carried out loosening with upper supporting rope and is coupled by rope card, while when can also temporarily be coupled net with lower supporting rope to ensure suture
It is safer, hereafter lifting rope can unclamp extraction；
Until S9.3 steps be repeated alternatively until that whole steel rope nets are temporarily suspended on supporting rope, and it is displaced sideways steel rope net
It is located at correct position；
S9.4 will suture rope and indicate by 1.2~1.4 times of truncations of individual net week side length, and wherein on point work；
The suture of S9.5 steel rope net:
Since one end of system, first suture rope midpoint is fixed on each top line of the net midpoint supporting rope.From
Midpoint starts each restricted with half suture to two sides and gradually net and two supporting ropes is intertwined, and blocks until with rope by two branch
After support restricts and ties place together, net and a supporting rope without pressure-reducing ring are intertwined with suture rope, when arriving
When up to capital hanging seat, suture rope from the front side of hanging seat is passed through into (cannot be wound on hanging seat), continue under steering by net with it is adjacent
Network edge or supporting rope (the single rope section parallel with steel column of upper supporting rope), which suture, to be intertwined until pedestal hanging seat, equally from
The front side of hanging seat pass through and turn to continue to wind after this is thrown the net a lower supporting rope without pressure-reducing ring until and knot two supports
In place of the rope card of rope, net and two lower supporting ropes are intertwined with suture rope again from here on, until crossing over steel rope net
Until 1 ± 0.1m of lower edge midpoint, finally suture rope is fixed together with steel rope net with rope card, rope card should be placed on off-seam and close rope end
Hold the place of 0.5 ± 0.05m.Suture rope the other half edge midpoint starts to suture to the right from network, until with another boundary of throwing the net
Place turn under two thrown the net be stitched together, this is turned to when reaching lower supporting rope and throws the net and is wrapped in two supporting ropes
Together, finally make the nose heave folded 1 ± 0.1m of the suture rope end of left and right sides；
When steel column has single supporting rope in parallel in the middle part of the part that supporting rope subsection setup makes one section of stone blocking net, by
In being non-fully evenly arranged for steel column spacing, wire rope net edge may not be just at the steel column, at this time after suture
Rope card is preferably used to be coupled wire rope net with list support rope section loosening, 1 ± 0.1m of tie-point spacing or so；
S10, grid installation
S10.1, grid paving hang over the inside (meeting slope surface side) of steel rope net, and should cover steel cable upper edge of net and fold to the outer of net
15 ± 1.5cm of side, is fixed on the net with tied silk；
S10.2, grating base should be along ramping up 0.5 ± 0.5m of laying, and to make not staying seam between lower supporting rope and ground
Gap is pushed down grating base with some stones；
10 ± 1cm is covered between S10.3, every grid；
S10.4, grid is fixed on steel rope net with suture, every square metre is fixed at 4 or more.
S11, falling rocks cleaning
Falling rocks periodic cleaning is irregularly cleared up according to the amount of falling off, i.e. protective net " unloading "；Be first turned on unloading area (under
Keep off steel rope net) under rope card on supporting rope, then slowly loosen the lower supporting rope wound on pedestal B hanging seat, falling rocks collecting region bottom
Portion is just slowly opened, and in scale removal process, can be controlled at pedestal B lower supporting rope according to falling rocks situation, anti-falling stop
Stone all slides, while falling rocks cleaning can also be carried out under the security protection of protective net top half.
Claims (3)
1. a kind of passive side slope protective screen, it is characterised in that: by pull-up anchor line (1), embedded anchor bar (2), steel rope net (3), decompression
Ring (4), supporting rope (5), steel column (6), articulated joints (7), pedestal B (8), pedestal A (9), support rod (10) and grid (11)
Composition；
The supporting rope (5) is made of upper supporting rope (51), middle supporting rope (52) and lower supporting rope (53)；
The pedestal B (8) is made of pedestal B ground anchor bolt (81), lower supporting rope hanging seat (82) and support rod connecting plate (83)；Ground
Anchor bolt (81) is used for fixed pedestal B (8)；Lower supporting rope hanging seat (82) is unloaded for fixed lower supporting rope (53) end, protective net
It is opened when load；Support rod connecting plate (83) is used for connection support bar (10) lower end；
The pedestal A (9) is made of pedestal A ground anchor bolt (91) and steel column connecting plate (92)；Wherein, pedestal A ground anchor bolt
(91) fixed pedestal A (9) are used for, steel column connecting plate (92) is for connecting steel column (6) lower end；
The steel rope net (3) is made of upper gear steel rope net (30) and lower block steel rope net (32)；It is described it is upper gear steel rope net (31) it is upper
Portion and lower part are fixed by upper supporting rope (51) and middle supporting rope (52) respectively, the left and right sides difference of upper gear steel rope net (31)
It is fixed by two adjacent steel columns (6)；The upper and lower part of the lower block steel rope net (32) respectively by middle supporting rope (52) and under
Supporting rope (53) is fixed, and the two sides of the lower block steel rope net (32) are fixed by two adjacent supports bars (10)；The steel rope net (3)
It is all made of suture with the mode of connection of supporting rope (5), steel column (6), support rod (10) and fixes；
The top of the steel column (6) and the hanging seat that supporting rope (5) are equipped with the junction of articulated joints (7)；The steel column
(6) hanging seat at the top of is connected with embedded anchor bar (2) by pulling up anchor line (1)；
The upper supporting rope (51) connects the top hanging seat of two adjacent steel columns (6), and middle supporting rope (52) connects adjacent steel column (6)
The hanging seat with the junction of articulated joints (7), the lower supporting rope hanging seat of lower supporting rope (53) connection adjacent susceptors B (8)
(82), all supporting ropes (5) are concatenating pressure-reducing ring (4) at steel column (6) or support rod (10).
2. side slope protective screen according to claim 1, it is characterised in that: the articulated joints (7) is by connecting flange
(71), connection intermediate plate (72) and connection bolt (73) composition, are placed in two panels for connecting flange (71) when connection and connect intermediate plate (72)
Centre, insertion connects bolt (73) and fastens after being directed at connecting hole.
3. a kind of passive side slope protective screen construction method, comprising the following steps:
S1, surveying setting-out
To steel column pedestal and support rod base setting-out；
S2, excavation of foundation pit
The foundation pit of pedestal is excavated；
Simultaneously basic concrete is perfused in S3, embedded anchor bar
Pre-buried to concrete foundation progress anchor pole, can also drill installation anchor pole after foundation concrete is perfused；
S4, pedestal installation
Pedestal is inserted in foundation bolt and is tightened with nut；
S5, steel column installation
Pass through pull-up anchor line auxiliary installation steel column；
The arrangement of S6, pressure-reducing ring
Pressure-reducing ring is distributed on the supporting rope of upper, middle and lower, is two distributions between every inter-network；
S7, the installation of upper supporting rope
Supporting rope is installed on the top hanging seat of steel column, is blocked with a rope by two top branch at away from 40 ± 4cm of pressure-reducing ring
Support rope interconnects；
S8, the installation of lower supporting rope
Supporting rope under installing on the pedestal hanging seat of support rod is blocked with a rope by two root bottom parts at away from 40 ± 4cm of pressure-reducing ring
Supporting rope interconnects；
S9, steel rope net press group #, and are unfolded between steel column according to corresponding position
Steel rope net and the supporting rope of upper, middle and lower three are fastened with suture rope；
S10, grid installation
Grid is fixed on steel rope net with suture, every square metre is fixed at 4 or more；
S11, falling rocks cleaning
The rope card under unloading area on supporting rope is opened, the lower supporting rope wound on pedestal B hanging seat is then slowly loosened, falling rocks is received
The bottom Ji Qu is just slowly opened, and falling rocks cleaning is carried out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910611050.6A CN110273386A (en) | 2019-07-08 | 2019-07-08 | A kind of passive side slope protective screen and its construction method |
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| CN201910611050.6A CN110273386A (en) | 2019-07-08 | 2019-07-08 | A kind of passive side slope protective screen and its construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112359736A (en) * | 2020-11-30 | 2021-02-12 | 陈国俊 | Buffering device for protecting side slope rolling stone |
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