CN112681045A - Ramp way back-pressure embankment deformation control structure and construction method - Google Patents
Ramp way back-pressure embankment deformation control structure and construction method Download PDFInfo
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Abstract
The invention relates to a ramp protection way back-pressure embankment deformation control structure, which comprises a pile-supported drainage back-pressure protection way, a pile-supported type steel side frame restraining bag water pressure temporary side ballast system, a roadbed top section steel frame temporary pull-bonding stabilizing system, a pile-filling back-pressure and wide-spread water injection bag anti-push combined deformation control system and a crack grouting and side slope anchor-planting grouting combined reinforcing structure, wherein the pile-supported drainage back-pressure protection way is connected with the pile-supported type steel side frame restraining bag water pressure temporary side; the pile-supported drainage back-pressure protection channel comprises a tubular pile, a bearing platform, a drainage cushion layer, a protection ramp way and a catch basin; the pile-supported steel side frame restraining bag water pressure temporary side pressure system comprises a steel side frame, a water injection bag, a baffle, a water injection port and a steel support frame; the temporary tie stabilizing system for the steel frame on the top of the roadbed comprises a base plate, a steel supporting plate, a U-shaped hook rib and a tie rib. The invention has the beneficial effects that: the pile-supported drainage back-pressure protection channel and the pile-supported steel side frame restraining bag water pressure temporary side ballast system are adopted, so that the stability and the drainage effect of the protection channel are effectively ensured, and the deformation of the embankment is reduced.
Description
Technical Field
The invention relates to a side-protection ramp way back-pressure embankment deformation control structure and a construction method, which can effectively reduce embankment deformation, enhance the drainage effect, improve the stability of an embankment, enhance the reinforcement effect of cracks and have high construction efficiency, belong to the field of municipal highway subgrade engineering and are suitable for the construction engineering of high-fill embankments in karst or soft soil areas.
Background
In the southwest area of China, when roads, railways and other basic construction are built, foundation filling engineering is common because most of the foundation is karst or soft soil foundations, the design speed of the existing railways and roads is improved, the design gravity center is gradually changed to limit deformation by controlling strength, so that the deformation requirement on a roadbed structure is higher and higher, the strength of the deformation reaches the design limit when the road performance is influenced, the deformation of an embankment needs to be strictly controlled in the construction process, on the basis of the current research, the deformation research on a ramp protection way back pressure embankment is less, and particularly, the application in practice is rare.
In view of this, aiming at the defects of the prior embankment deformation control that the construction speed is slow, the roadbed is unstable, the backfill is easy to cause deformation, the crack reinforcing effect is not good, and the like, a new protection ramp way back-pressure embankment deformation control structure and a construction method are urgently needed, the construction efficiency is improved, the construction quality is improved, and the construction quality is ensured to be safe and reliable.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a ramp way back-pressure embankment deformation control structure and a construction method, wherein the ramp way back-pressure embankment deformation control structure and the construction method can effectively reduce embankment deformation, enhance the drainage effect, improve the stability of an embankment and enhance the reinforcing effect of cracks, and have the characteristics of convenience in construction, good effect, simplicity in operation and the like.
The ramp protection way back-pressure embankment deformation control structure comprises a pile-supported drainage back-pressure protection way, a pile-supported section steel side frame restraining bag water pressure temporary side ballast system, a roadbed top section steel frame temporary pull-bonding stabilizing system, a pile-filling back-pressure and wide-spread water injection bag anti-push combined deformation control system and a crack grouting and side slope anchor-planting grouting combined reinforcing structure;
the pile-supported drainage back-pressure protection channel comprises a tubular pile, a bearing platform, a drainage cushion layer, a protection ramp way and a cut-off ditch, wherein the tubular pile is driven into a soil body, the bearing platform is positioned at the top end of the tubular pile, the drainage cushion layer is positioned at the upper part of the bearing platform, roadbed fillers are backfilled at the upper part of the drainage cushion layer, the protection ramp way is arranged between two slope surfaces formed by the roadbed fillers, and the cut-off ditch is arranged on one side of the protection ramp way;
the pile-supported type steel side frame restraining bag water pressure temporary side pressure weighing system comprises a steel side frame, a water injection bag, a baffle, a water injection port and a steel support frame, wherein the steel side frame is arranged on the lower slope surface of a protective ramp, the steel support frame is welded on the steel side frame in the longitudinal and transverse directions, the baffle is fixed on two side edges and bottom edges of the steel side frame, the water injection bag is arranged in a frame structure consisting of the steel side frame and the steel support frame, and the water injection port is arranged on the water injection bag;
the temporary tie stabilizing system for the steel frame on the top of the roadbed comprises a base plate, a steel support plate, U-shaped hook ribs and tie bars, wherein the base plate is fixed to the outer edge of the ramp way through soil nails;
the backfill back pressure and wide-spread water injection bag anti-push combined deformation control system comprises a backfill region and stone ballast, the backfill region is arranged at a free position on one side of the slope protection way, and the stone ballast is filled into the backfill region;
the combined reinforcing structure for grouting the cracks and the side slope comprises an anchor rod, grouting holes, a water release hole and a reinforcing steel bar net rack, wherein the upper part of roadbed filler is of a pavement structure, the anchor rod is driven into the slope surface on the slope protection way, the grouting holes are arranged around the cracks on the ground road and on the slope surface on the slope protection way, the water release hole is arranged on the slope surface on the slope protection way, and the reinforcing steel bar net rack is arranged on the whole slope surface on the slope protection way.
Preferably, the method comprises the following steps: the soil nail fixing device is characterized by further comprising a sizing clamp and soil nails, wherein the sizing clamp is provided with profile steel side frames fixed on one side of the slope surface at equal intervals, and the soil nails are used for fixing the sizing clamp on the slope surface soil body.
The construction method of the ramp way back-pressure embankment deformation control structure comprises the following steps:
step one, construction preparation: completely familiarizing construction drawings, well preparing on-site traffic control, protecting the on-site to be clean and tidy, and preparing construction materials and machinery to enter a field;
step two, pile foundation construction: constructing the tubular pile and the bearing platform;
step three, roadbed backfilling: constructing a drainage cushion layer on a bearing platform, then backfilling by adopting roadbed filling, arranging a catch basin at one side of the berm until backfilling to a ground road, and compacting and leveling;
step four, constructing a pile-supported type steel side frame restraint pocket water pressure temporary side pressure system: installing a profile steel side frame on the downhill surface of the ramp protection way, welding the profile steel support frame on the profile steel side frame in the longitudinal and transverse directions, installing baffle plates on two side edges and bottom edges of the profile steel side frame, putting a water injection bag with a water injection port into a frame structure consisting of the profile steel side frame and the profile steel support frame, and fixing the water injection bag on the slope surface through soil nails by using a shaping clamp according to a certain distance;
step five, constructing a temporary tie stabilizing system of the section steel frame on the top of the roadbed: fixing a backing plate on the outer edge of the ramp protection way by using soil nails, fixing a profile steel supporting plate on the backing plate, welding and installing U-shaped hook ribs on the profile steel supporting plate at certain intervals along the direction of the ramp protection way, welding one end of each tie rib on a profile steel side frame, and tying and fixing the other end of each tie rib with the U-shaped hook rib;
sixthly, constructing a combined deformation control system of back pressure of pile filling and pushing resistance of the wide-spread water injection bag: excavating a backfill area at a free position on one side of the protective ramp, and filling the stone ballast into the backfill area;
step seven, crack treatment: constructing and grouting holes around the cracks of the ground road along the crack direction, driving an anchor rod on the upper slope surface of the ramp protection way while drilling the grouting holes, arranging the anchor rod and the grouting holes in a quincunx shape, and arranging drain holes and paving a reinforcing steel bar net rack on the upper slope surface of the ramp protection way;
and step eight, finishing construction, checking and accepting, and mechanically retreating.
The invention has the beneficial effects that:
(1) the pile-supported drainage back-pressure protection channel and the pile-supported steel side frame restraining bag water pressure temporary side ballast system are adopted, so that the stability and the drainage effect of the protection channel are effectively ensured, and the deformation of the embankment is reduced.
(2) According to the invention, the steel frame temporary pull-knot stabilizing system is arranged on the outer edge of the ramp protection way, and the pile back pressure and wide-spread water injection bag anti-push combined deformation control system is adopted, so that the overall stability of the lateral ballast weight is effectively improved, the problem of embankment slippage is solved, and the foundation is stabilized.
(3) The method adopts the combined reinforcing technology of crack grouting and side slope anchor planting grouting, greatly improves the reinforcing effect on the cracks, is simple to operate and saves the construction period.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a front view of a pile supported steel side frame restraint bladder hydraulic temporary side pressure weight system;
FIG. 3 is a schematic diagram of a stylized fixture configuration;
FIG. 4 is a schematic structural diagram of a temporary tie-fixing system for a steel frame on the top of a roadbed;
FIG. 5 is a schematic view of a U-shaped rib structure;
FIG. 6 is a schematic diagram of a packing backpressure configuration;
FIG. 7 is a schematic view of a combined reinforcing structure of crack grouting and side slope anchor grouting;
fig. 8 is a sectional view taken along line a-a in fig. 7.
Description of reference numerals: 1-road center line, 2-ground road, 3-road surface structure, 4-roadbed filler, 5-pipe pile, 6-bearing platform, 7-drainage cushion layer, 8-catch basin, 9-slope protection way, 10-section steel side frame, 11-shaped fixture, 12-backing plate, 13-section steel support plate, 14-U-shaped hook rib, 15-tie rib, 16-section steel support frame, 17-baffle, 18-water injection bag, 19-water injection port, 20-backfill area, 21-stone slag, 22-crack, 23-anchor rod, 24-reinforcing steel bar net rack, 25-grouting hole, 26-drainage hole, 27-slope shoulder, 28-slope bottom and 29-soil nail.
Detailed Description
The present invention will be further described with reference to the following examples. The following examples are set forth merely to aid in the understanding of the invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Example one
As shown in fig. 1 to 8, the ramp protection way back pressure embankment deformation control structure comprises a pile-supported drainage back pressure protection way, a pile-supported section steel side frame restraining bag water pressure temporary side ballast system, a roadbed top section steel frame temporary pulling and stabilizing system, a pile filling back pressure and wide paving water injection bag anti-push combined deformation control system, and crack grouting and slope anchor grouting combined reinforcement.
Pile formula drainage back pressure dado includes tubular pile 5, cushion cap 6, drainage bed course 7, berm way 9, intercepting ditch 8, the soil body is squeezed into to tubular pile 5, cushion cap 6 is located the 5 tops of tubular pile, drainage bed course 7 is under construction on cushion cap 6 upper portion, and roadbed filler 4 is backfilled on drainage bed course 7 upper portion, is equipped with a berm way 9 between two domatic of roadbed filler 4 formation, intercepting ditch 8 sets up in berm way 9 one side.
The pile-supported type steel side frame restraining bag hydraulic pressure temporary side pressure system comprises a steel side frame 10, a water injection bag 18, a baffle 17, a water injection port 19 and a steel support frame 16, wherein the steel side frame 10 is arranged on the lower slope surface of a protective slope 9, the steel support frame 16 is welded on the steel side frame 10 in the longitudinal direction and the transverse direction, the baffle 17 is fixed on two side edges and bottom edges of the steel side frame 10, the water injection bag 18 is arranged in a frame structure formed by the steel side frame 10 and the steel support frame 16, and the water injection port 19 is arranged on the water injection bag 18.
Roadbed top type steel frame temporary pull knot system includes that backing plate 12, shaped steel backup pad 13, U type collude muscle 14, lacing wire 15, backing plate 12 is fixed in the outward flange of ramp 9 with soil nail 29, shaped steel backup pad 13 is fixed in on backing plate 12, the U type colludes muscle 14 and is fixed in shaped steel backup pad 13 according to the determining deviation along ramp 9 direction, 15 one end welding of lacing wire are on shaped steel side bearer 10, and the other end colludes muscle 14 lacing wire with the U type and fixes.
The control system for the combined deformation of the back-pressure stacking and filling and the pushing resistance of the wide-spread water injection bag comprises a backfill area 20 and ballast 21, wherein the backfill area 20 is arranged at a vacant position on one side of the slope protection way 9, and the ballast 21 is filled into the backfill area 20.
The combined reinforcement of the crack grouting and the side slope anchor planting grouting comprises an anchor rod 23, a grouting hole 25, a water drainage hole 26, a reinforcing steel bar net rack 24, a slope shoulder 27 and a slope bottom 28, wherein the upper part of roadbed filler 4 is a pavement structure 3, the anchor rod 23 is driven into the slope surface of the slope protection way 9, the grouting hole 25 is arranged around the crack 22 on the ground road 2 and on the slope surface of the slope protection way 9, the water drainage hole 26 is arranged on the slope surface of the slope protection way 9, and the reinforcing steel bar net rack 24 is arranged on the whole slope surface of the slope protection way 9. The shoulders 27 and the bottoms 28 are located at the upper and lower ends of the road structure 3, respectively.
The improved embodiment further comprises a sizing clamp 11 and soil nails 29, wherein the sizing clamp 11 is used for fixing the profile steel side frame 10 attached to one side of the slope surface at a certain interval, so that the whole frame structure is fixed, and the soil nails 29 are used for fixing the sizing clamp 11 on the slope surface soil body.
The road center line 1, the pavement structure 3 and the roadbed filling 4 are further included as a modified embodiment, and the roadbed filling 4 is used for backfilling the embankment.
Example two
The construction method of the ramp way back-pressure embankment deformation control structure comprises the following steps:
step one, construction preparation: the construction drawing is completely familiar, the on-site traffic control is well done, the on-site is protected to be clean and tidy, and the construction material and the machinery are prepared to enter the field.
Step two, pile foundation construction: and (5) constructing the tubular pile 5 and the bearing platform 6 according to construction requirements.
Step three, roadbed backfilling: and constructing a drainage cushion layer on the bearing platform 5, backfilling by adopting roadbed filling 4, arranging a intercepting ditch 8 on one side of the slope protection way 9 until the road 2 on the ground is backfilled, and compacting and leveling.
Step four, constructing a pile-supported type steel side frame restraint pocket water pressure temporary side pressure system: a profile steel side frame 10 is installed on the downhill surface of a slope protection way 9, a profile steel supporting frame 16 is welded on the profile steel side frame 10 in the longitudinal and transverse directions, baffles 17 are installed on two side edges and the bottom edge of the profile steel side frame 10, a water injection bag 18 with a water injection port 19 is placed in a frame structure formed by the profile steel side frame 10 and the profile steel supporting frame 16, and the water injection bag is fixed on the slope surface through soil nails 29 by using a shaping clamp 11 according to a certain distance.
Step five, constructing a temporary tie stabilizing system of the section steel frame on the top of the roadbed: a backing plate 12 is fixed on the outer edge of a retaining ramp 9 through a soil nail 29, a section steel supporting plate 13 is fixed on the backing plate 12, U-shaped hook ribs 14 are welded and installed on the section steel supporting plate 13 at a certain interval along the direction of the retaining ramp 9, one end of each tie rib 15 is welded on a section steel side frame 10, and the other end of each tie rib is fixedly tied with the U-shaped hook rib 14.
Sixthly, constructing a combined deformation control system of back pressure of pile filling and pushing resistance of the wide-spread water injection bag: and excavating a backfill area 20 at the side of the protection ramp 9 near the empty position, and filling the backfill area 20 with stone ballast 21.
Step seven, crack treatment: and (3) constructing and grouting holes 25 around the crack 22 of the ground road 2 along the direction of the crack 22, driving an anchor rod 23 on the upper slope surface of the slope protection way 9, drilling the grouting holes 25, arranging the anchor rod and the grouting holes in a quincunx manner, arranging drain holes 26 on the upper slope surface of the slope protection way 9 according to requirements, and paving a reinforcing steel bar net rack 24.
And step eight, finishing construction, checking and accepting, and mechanically retreating.
Claims (3)
1. The slope protection way back pressure embankment deformation control structure is characterized by comprising a pile-supported drainage back pressure protection way, a pile-supported steel side frame restraining bag water pressure temporary side ballast system, a roadbed top section steel frame temporary pull-bonding stabilizing system, a pile-filling back pressure and wide-spread water injection bag anti-push combined deformation control system and a crack grouting and side slope anchor-planting grouting combined reinforcing structure;
the pile-supported drainage back-pressure protection channel comprises a tubular pile (5), a bearing platform (6), a drainage cushion layer (7), a protection ramp (9) and a intercepting ditch (8), wherein a soil body is driven into the tubular pile (5), the bearing platform (6) is positioned at the top end of the tubular pile (5), the drainage cushion layer (7) is positioned at the upper part of the bearing platform (6), roadbed fillers (4) are backfilled at the upper part of the drainage cushion layer (7), the protection ramp (9) is arranged between two slope surfaces formed by the roadbed fillers (4), and the intercepting ditch (8) is arranged on one side of the protection ramp (9);
the pile-supported steel side frame restraining pocket hydraulic pressure temporary side ballast system comprises a steel side frame (10), a water injection pocket (18), a baffle (17), a water injection port (19) and a steel support frame (16), wherein the steel side frame (10) is arranged on the lower slope surface of a slope protection way (9), the steel support frame (16) is welded on the steel side frame (10) in the longitudinal and transverse directions, the baffle (17) is fixed on two side edges and a bottom edge of the steel side frame (10), the water injection pocket (18) is arranged in a frame structure consisting of the steel side frame (10) and the steel support frame (16), and the water injection port (19) is arranged on the water injection pocket (18);
the temporary tie stabilizing system for the steel frame on the top of the roadbed comprises a base plate (12), a steel support plate (13), a U-shaped hook rib (14) and a tie rib (15), wherein the base plate (12) is fixed on the outer edge of a ramp way (9) through a soil nail (29), the steel support plate (13) is fixed on the base plate (12), the U-shaped hook rib (14) is fixed on the steel support plate (13) at equal intervals along the direction of the ramp way (9), one end of the tie rib (15) is welded on a steel side frame (10), and the other end of the tie rib is tied and fixed with the U-shaped hook rib (14);
the control system for the combined deformation of the back-pressure stacking and filling and the pushing resistance of the wide-spread water injection bag comprises a backfill region (20) and ballast (21), wherein the backfill region (20) is arranged at a vacant position on one side of the slope protection way (9), and the ballast (21) is filled into the backfill region (20);
the combined reinforcing structure for grouting the crack and the side slope comprises an anchor rod (23), grouting holes (25), a water release hole (26) and a reinforcing steel bar net rack (24), wherein the upper part of roadbed filler (4) is a pavement structure (3), the anchor rod (23) is driven into the slope surface of the slope protection way (9), the grouting holes (25) are arranged around the crack (22) on the ground road (2) and on the slope surface of the slope protection way (9), the water release hole (26) is arranged on the slope surface of the slope protection way (9), and the reinforcing steel bar net rack (24) is arranged on the whole slope surface of the slope protection way (9).
2. The structure for controlling deformation of a retaining ramp type back pressure embankment according to claim 1, further comprising a sizing fixture (11) and soil nails (29), wherein the sizing fixture (11) is provided with the steel side frames (10) fixed on one side of the slope surface at equal intervals, and the soil nails (29) fix the sizing fixture (11) on the slope surface soil.
3. A construction method of the berm slope back embankment deformation control structure according to claim 1, characterized by comprising the steps of:
step one, construction preparation: completely familiarizing construction drawings, well preparing on-site traffic control, protecting the on-site to be clean and tidy, and preparing construction materials and machinery to enter a field;
step two, pile foundation construction: constructing the tubular pile (5) and the bearing platform (6);
step three, roadbed backfilling: constructing a drainage cushion layer on the bearing platform (5), then backfilling by adopting roadbed fillers (4), arranging a catch basin (8) at one side of the slope protection way (9) until backfilling to the ground road (2), and compacting and leveling;
step four, constructing a pile-supported type steel side frame restraint pocket water pressure temporary side pressure system: installing a profile steel side frame (10) on the downhill surface of a slope protection way (9), welding a profile steel supporting frame (16) on the profile steel side frame (10) in a longitudinal and transverse mode, installing baffle plates (17) on two side edges and a bottom edge of the profile steel side frame (10), putting a water injection bag (18) with a water injection port (19) into a frame structure formed by the profile steel side frame (10) and the profile steel supporting frame (16), and fixing the water injection bag on the slope surface through soil nails (29) by using a shaping clamp (11) according to a certain distance;
step five, constructing a temporary tie stabilizing system of the section steel frame on the top of the roadbed: fixing a backing plate (12) on the outer edge of a ramp protection way (9) by using soil nails (29), fixing a section steel supporting plate (13) on the backing plate (12), welding and installing U-shaped hook ribs (14) on the section steel supporting plate (13) at certain intervals along the direction of the ramp protection way (9), welding one end of a lacing wire (15) on a section steel side frame (10), and tying and fixing the other end of the lacing wire with the U-shaped hook ribs (14);
sixthly, constructing a combined deformation control system of back pressure of pile filling and pushing resistance of the wide-spread water injection bag: excavating a backfill area (20) at the vacant position on one side of the slope protection way (9), and filling stone slag (21) into the backfill area (20);
step seven, crack treatment: constructing and grouting holes (25) around the cracks (22) of the ground road (2) along the directions of the cracks (22), driving anchor rods (23) into the upper slope surface of the ramp protection way (9) and drilling the grouting holes (25), arranging the anchor rods and the grouting holes in a quincunx manner, arranging drain holes (26) on the upper slope surface of the ramp protection way (9) and paving a reinforcing steel bar net rack (24);
and step eight, finishing construction, checking and accepting, and mechanically retreating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202011531319.9A CN112681045B (en) | 2020-12-22 | 2020-12-22 | Ramp way back-pressure embankment deformation control structure and construction method |
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| JP2002275907A (en) * | 2001-03-16 | 2002-09-25 | Toyo Constr Co Ltd | Stabilization construction method for slope |
| KR20100040089A (en) * | 2008-10-09 | 2010-04-19 | (주)신성엔지니어링 | Slope protection structure for revetment or river embarkment slope and construction method thereof |
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| CN112681045B (en) | 2022-06-07 |
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Denomination of invention: Control Structure and Construction Method for Deformation of Embankment under Backpressure of Slope Protection Effective date of registration: 20230927 Granted publication date: 20220607 Pledgee: Industrial Bank Limited by Share Ltd. Wuhan branch Pledgor: HUBEI PROVINCIAL ROAD & BRIDGE Co.,Ltd. Registration number: Y2023980059401 |