CN108396605A - Underlie buried cave dwelling road structure and construction method - Google Patents
Underlie buried cave dwelling road structure and construction method Download PDFInfo
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- CN108396605A CN108396605A CN201810145751.0A CN201810145751A CN108396605A CN 108396605 A CN108396605 A CN 108396605A CN 201810145751 A CN201810145751 A CN 201810145751A CN 108396605 A CN108396605 A CN 108396605A
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- cave dwelling
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
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Abstract
Underlie buried cave dwelling road structure the invention discloses one kind, section of the road structure for buried depth cave dwelling between 3m~15m to be distributed with below proposed road, the road structure include be layered code build sandstone woven bag in the cave dwelling, the closing cave dwelling portal mortar flag stone, be poured in after the mortar flag stone with the slurries inside the cave dwelling and the reinforcement strainer on the original ground that is laid on above the cave dwelling, the original ground is natively basal plane.The present invention also provides a kind of construction methods for the buried cave dwelling road structure that underlies.Underlie buried cave dwelling road structure and the construction method of the present invention fills cave dwelling using sandstone woven bag, filler economy, and method is simple；Reperfusion serosity fills hole, reduces settlement after construction and the deformation of cave dwelling；Original ground, which is laid with reinforcement strainer, above cave dwelling can increase substantially the globality of cave dwelling punishment section roadbed.
Description
Technical field
The present invention relates to road foundation field of engineering technology, underlie buried cave dwelling road structure and construction in particular to one kind
Method.
Background technology
There is a large amount of cave dwellings for Loess Plateau, with the development of Highway in Loess Area construction, unavoidably
Meeting the case where encountering across cave dwelling.Part cave dwelling, although seeing that quasi-stable, highway are especially high-grade public affairs at present
Road service life is usually longer, if cave dwelling roadbed is not punished or dealt with improperly, the later stage may will produce subgrade and pavement deformation, very
To the diseases such as collapsing, potential threat is brought to highway operation, causes larger economic loss.
Currently, the case where for encountering cave dwelling during road construction, generally take large cross section excavation rammer to fill out, it should
Method process is simple, quality easily ensures, but when cave dwelling buried depth be more than 3m when, excavation amount is larger, and the duration is longer, and expense compared with
It is high.Another kind is direct grouting and reinforcing cave dwelling, and the moisture that a large amount of slip castings are brought into may cause Loess Collapsibility to destroy, and expense
It is higher.In addition, also having using sandfilling cave dwelling is directly filled, this method is due to cannot be guaranteed that sand has enough densities, meeting
Lead to settlement after construction and deforms larger.It is, thus, sought for a kind of step is simple, economical rationality and realizes convenient cave dwelling
Construction method, cave dwelling is effectively punished.
Invention content
Underlie buried cave dwelling road structure the object of the present invention is to provide one kind, construction procedure is simple, economical closes
Reason.
To achieve the above object, the buried cave dwelling road structure that underlies designed by the present invention, the road structure is for intending
It builds below road and the section of buried depth cave dwelling between 3m~15m is distributed with, the road structure includes that layering code is built in institute
State the sandstone woven bag in cave dwelling, the closing cave dwelling portal mortar flag stone, be poured in the mortar flag stone after
With the slurries inside the cave dwelling and the reinforcement strainer on the original ground that is laid on above the cave dwelling, the original
Ground is natively basal plane.
Preferably, longitudinal laying length of the reinforcement strainer be the cave dwelling hole away from five times, it is described
Longitudinal laying length of reinforcement strainer is 15m~20m, and the lateral laying length of the reinforcement strainer is slightly larger than the cave dwelling
Hole it is deep, the adjacent reinforcement strainer lap width is 0.1m~0.2m.
Preferably, the reinforcement strainer is high-strength polyester reinforcement strainer, and the high-strength polyester reinforcement strainer is indulged
To stretch modulus >=1000kN/m when 2% elongation, lengthwise elongation at break≤12% of the high-strength polyester reinforcement strainer, institute
State infiltration coefficient≤1.0cm/s of high-strength polyester reinforcement strainer, the reduction of long-term creeps in 120 years of the high-strength polyester reinforcement strainer
Coefficient≤1.45, breadth >=5.0m of the high-strength polyester reinforcement strainer.
Preferably, the sandstone woven bag is PP Polywoven Bags, and the width of the sandstone woven bag is 0.45m
~0.65m, the length of the sandstone woven bag are 0.6m~1.0m, the built-in sand filling of the sandstone woven bag, rubble, sand gravel.
Preferably, the slurries are the cement mortar of M5 or M7.5, and the presetting period is more than or equal to 6h.
Preferably, the thickness of building by laying bricks or stones of the mortar flag stone is 1.0m~2.0m, and the mortar flag stone builds sand by laying bricks or stones
Slurry uses the cement mortar of M7.5 or M10.
Preferably, the injected hole being put into for conveying the Grouting Pipe of the slurries is reserved in the mortar flag stone,
The top of the injected hole is equipped with the extravasating hole overflowed for the slurries.
Preferably, the Grouting Pipe is outer diameter 40mm~50mm seamless steel pipes, and the slip casting length of tube is smaller
In the depth of the cave dwelling, at 5cm~10cm at the top of the portal, the aperture of the injected hole is the injected hole
45mm~55mm.
The present invention also aims to, a kind of construction method for the buried cave dwelling road structure that underlies is provided, it can be easy, economical
Ground is effectively punished by cave dwelling.
To achieve the above object, the construction method of the buried cave dwelling road structure that underlies designed by the present invention, including it is following
Step：Step a) measures buried depth, the length of the cave dwelling (1)；Step b), it is described obtained by being measured in step a)
The buried depth of cave dwelling (1), length prepare the sandstone woven bag (2), mortar flag stone (3), Grouting Pipe (5), slurries (4)；
Step c), layering code builds the sandstone woven bag (2) to filling up the entire cave dwelling (1) in the cave dwelling (1)；
Step d), it is pre- in the interior mortar flag stone (3) the closing portal of the portal of the cave dwelling (1), the mortar flag stone (3)
Stay the injected hole (6) for being inserted into the Grouting Pipe (5) and the extravasating hole (7) above the injected hole (6)；Step e), from
The Grouting Pipe (5) is inserted into the injected hole (6) to the cave dwelling (1) interior reperfusion serosity (4), until the extravasating hole
(7) it extracts the Grouting Pipe (5) out after having slurries spilling in, closes the injected hole (6) and the extravasating hole (7)；Step f),
High-strength polyester reinforcement strainer (8) is laid on original ground (9) above the cave dwelling (1).
Preferably, in the step b), the sandstone woven bag (2) is built-in sand filling, rubble, sand gravel
PP Polywoven Bags, width are 0.45m~0.65m, and length is 0.60m~1.00m；It is described to grout piece in the step d)
The thickness of building by laying bricks or stones of stone (3) is 1.0m~2.0m, and the mortar flag stone (3) uses the masonry of cement mortar of M7.5 or M10；Described
In step e), extracts Grouting Pipe (5) out in due course during the slurries (4) are perfused and control draw speed so that the slip casting
Pipe 5 is in 4 or less 0.5m~1.0m of the slurries；In the step f), the high-strength polyester reinforcement strainer (8) is longitudinally laid with length
Degree be the cave dwelling (1) hole away from five times, lateral laying length is deep slightly larger than the hole of the cave dwelling (1), adjacent
High-strength polyester reinforcement strainer (8) lap width be 0.1m~0.2m.
The beneficial effects of the invention are as follows：Underlie buried cave dwelling road structure and the construction method process of the present invention are simple and apply
The work period is short, and the cave dwelling under roadbed can be effectively treated, and cave dwelling, filler economy, side are filled using sandstone woven bag
Method is simple, substantially increases construction efficiency, reduces construction cost；Reperfusion serosity fills hole, sinks after reducing the work of cave dwelling
Drop and deformation, improve subgrade stability；Original ground is laid with reinforcement strainer and can increase substantially at cave dwelling above cave dwelling
The globality for controlling section roadbed, road differential settlement caused by effectivelying prevent cave dwelling punishment section subgrade settlement to come to nothing.
Description of the drawings
Fig. 1 is the structural schematic diagram of the vertical section of the buried cave dwelling road structure that underlies of the preferred embodiment of the present invention.
Fig. 2 is the cross-sectional configuration schematic diagram of the buried cave dwelling road structure that underlies of the preferred embodiment of the present invention.
Fig. 3 is the slip casting cross-sectional configuration schematic diagram of the buried cave dwelling road structure that underlies of the preferred embodiment of the present invention.
Fig. 4 is the flow chart of the construction method of the buried cave dwelling road structure that underlies of the preferred embodiment of the present invention.
Each part numbers are as follows in figure：Cave dwelling 1, sandstone woven bag 2, mortar flag stone 3, slurries 4, Grouting Pipe 5, slip casting
Hole 6, extravasating hole 7, high-strength polyester reinforcement strainer 8, original ground 9.
Specific implementation mode
The following further describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
Underlie buried cave dwelling road structure and the construction method of the present invention, suitable for the buried depth H that underlies in 3m≤H≤15m models
Enclose the roadbed treatment of interior basicly stable cave dwelling.It please refers to Fig.1 and Fig. 2, buried cave dwelling 1 is located at proposed road road
On line, and 1 structure of exhaust gas cave dwelling is basicly stable.Layering code builds sandstone woven bag 2 to filling out in the cave dwelling 1 for having removed sundries
Full entire cave dwelling 1.Fig. 3 is please referred to, the portal of cave dwelling 1 is closed using mortar flag stone 3, and in mortar flag stone 3
Injected hole 6 is reserved on the top of middle cave dwelling portal, and extravasating hole 7 is reserved in the top of injected hole 6.Grouting Pipe 5 is inserted into injected hole 6 to fill
Injection slurry 4 simultaneously extracts Grouting Pipe 5 out paragraph by paragraph, until after having the spilling of slurries 4 in the extravasating hole 7 being located above injected hole 6, is fully drawn out
Grouting Pipe 5.Close injected hole 6 and extravasating hole 7, and above closed cave dwelling 19 five times of holes of original ground across being laid in range
High-strength polyester reinforcement strainer 8.
It is 0.45m or 0.55m or 0.65m, length 0.60m that sandstone woven bag 2, which uses PP plastic material woven bags, width,
Or 0.70m or 0.80m or 0.90m or 1.00m.Sand loading or rubble or sand gravel in sandstone woven bag 2, filler economy, method letter
It is single, construction efficiency is substantially increased, construction cost is reduced.
The portal of cave dwelling 1 builds closing by laying bricks or stones using mortar flag stone 3, and the thickness of building by laying bricks or stones of mortar flag stone 3 is 1.0m or 1.5m
Or 2.0m, the masonry mortar of mortar flag stone 3 use the cement mortar of M7.5 or M10.Mortar flag stone 3 builds the hole of cave dwelling 1 by laying bricks or stones
Door can balance the lateral pressure of dirt road base, prevent the extrusion of sandstone woven bag 2 from roadbed being caused to destroy.
Slurries 4 using M5 or M7.5 cement mortar, the presetting period be more than or equal to 6h, with ensure slurries 4 perfusion mistake
Not lost flowability in journey, it is ensured that the globality of slurry.
Grouting Pipe 5 is outer diameter 40mm or 45mm or 50mm seamless steel pipe, and 5 length of Grouting Pipe is slightly less than the depth of cave dwelling 1
Degree.
Injected hole 6 is located at the top 5cm or 10cm of 3 middle-range cave dwelling 1 of mortar flag stone, and the aperture of injected hole 6 is bigger
In the outer diameter of Grouting Pipe 5, it is chosen as 45mm or 50mm or 55mm.
Extravasating hole 7 is located at the top of mortar flag stone 3.There is no limit as long as slurries 4 can be from extravasating hole 7 in the aperture of extravasating hole 7
Middle overflow goes out.
High-strength polyester reinforcement strainer 8 is layed in 1 top original ground of cave dwelling, 9 five times of holes across in range.High-strength polyester adds
Stretch modulus >=1000kN/m when 8 2% elongation of longitudinal direction of muscle strainer, lengthwise elongation at break≤12%, infiltration coefficient≤
1.0cm/s, 120 years long-term reduction factor of creep strength≤1.45, breadth >=5.0m.High-strength polyester reinforcement strainer 8 uses usual reinforcement,
Longitudinal laying length be cave dwelling 1 hole away from five times, length be 15m or 16m or 17m or 18m or 19m or 20m, laterally spread
If length is deep slightly larger than the hole of cave dwelling 1.Adjacent 8 lap width of high-strength polyester reinforcement strainer is 0.1m or 0.15m or 0.2m.
Laying high-strength polyester reinforcement strainer 8 can increase substantially the globality that cave dwelling 1 punishes section roadbed, and cave dwelling 1 is effectively prevent to punish section
Road differential settlement caused by subgrade settlement comes to nothing, while lower part roadbed can also be made to have with superstructure and contacted well.
Original ground 9 is natively basal plane, and meets the requirement of subgrade rating.When 9 bearing capacity of original ground is unsatisfactory for requiring
When, it is handled using closely knit method or cushion or method for strengthening.
Please refer to Fig. 4, the construction method of the buried cave dwelling road structure that underlies of the preferred embodiment of the present invention, including with
Lower step：
Step a), surveying and locating.
Measure the buried depth of cave dwelling 1 and the relationship and length of circuit.
Step b), preparation of construction.
According to the size of cave dwelling 1 obtained by surveying and locating, prepare sufficient sandstone woven bag 2, slabstone, Grouting Pipe 5, water
Mud, sand and grouting pump, blender, blender.
Step c), code build woven bag 2.
Clear up sundries in cave dwelling 1, after rubbish, manual zoning's code builds sandstone woven bag 2 to filling out in cave dwelling 1
Full entire cave dwelling 1.
Sandstone woven bag 2 use PP plastics, width be 0.45m or 0.55m or 0.65m, length be 0.60m or 0.70m or
0.80m or 0.90m or 1.00m, sand loading or rubble or sand gravel in sandstone woven bag 2, filler economy, method is simple, carries significantly
High construction efficiency, reduces construction cost.
Step d) closes the portal of cave dwelling 1.
It is closed with mortar flag stone 3 before the portal for the cave dwelling 1 for filling up sandstone woven bag 2, forms mortar flag stone
Portal.The thickness of building by laying bricks or stones of mortar flag stone 3 is 1.0m or 1.5m or 2.0m, and the masonry mortar of mortar flag stone 3 is using M7.5's or M10
Cement mortar.Mortar flag stone 3, which builds portal by laying bricks or stones, can balance the lateral pressure of dirt road base, prevent the extrusion of sandstone woven bag 2 from leading to roadbed
It destroys.
Step e), slip casting.
It is inserted perpendicularly into Grouting Pipe 5 from the injected hole 6 on mortar flag stone 3 and is irrigated slurries 4.Extraction Grouting Pipe 5 in due course,
And control draw speed so that Grouting Pipe 5 is in 4 or less 0.5m or 0.6m or 0.7m or 0.8m or 0.9m or 1.0m of slurries, to protect
4 continuous uniform of slurries is demonstrate,proved, until after extravasating hole 7 has the spilling of slurries 4, extracts Grouting Pipe 5 out, closes 6 top of injected hole 6 and injected hole
Extravasating hole 7.Grouting filling hole reduces settlement after construction and the deformation of cave dwelling, improves subgrade stability.
Step f), laying high-strength polyester reinforcement strainer 8.
High-strength polyester reinforcement strainer 8 is layed in 1 top original ground of cave dwelling, 9 five times of holes across in range.High-strength polyester adds
Stretch modulus >=1000kN/m when 8 2% elongation of longitudinal direction of muscle strainer, lengthwise elongation at break≤12%, infiltration coefficient≤
1.0cm/s, 120 years long-term reduction factor of creep strength≤1.45, breadth >=5.0m.High-strength polyester reinforcement strainer 8 uses usual reinforcement,
Longitudinal laying length be cave dwelling 1 hole away from five times, length be 15m or 16m or 17m or 18m or 19m or 20m, laterally spread
If length is deep slightly larger than 1 hole of cave dwelling, adjacent 8 lap width of high-strength polyester reinforcement strainer is 0.1m or 0.15m or 0.2m.Paving
If high-strength polyester reinforcement strainer 8 can increase substantially the globality that cave dwelling 1 punishes section roadbed, cave dwelling 1 is effectively prevent to punish Duan Lu
Road differential settlement caused by base sinking is come to nothing.So far, the roadbed punishment at cave dwelling 1 is completed, and waits for next step portion road
The construction of base or pavement engineering.
Underlie buried cave dwelling road structure and construction method the invention discloses one kind, the structure is by cave dwelling, sandstone
Woven bag, portal, slurries, Grouting Pipe, injected hole, extravasating hole, high-strength polyester reinforcement strainer, original ground composition.First clearly
Layering code builds sandstone woven bag in the cave dwelling of impurity removing, until filling up entire cave dwelling；Then cave dwelling portal is used
Mortar flag stone is closed, and the injected hole reserved above portal is inserted into Grouting Pipe slip casting and carries out pore filling until slurries are from excessive slurry
It overflows in hole；Finally above closed cave dwelling five times of holes of original ground across laying high-strength polyester reinforcement strainer in range.So far,
Cave dwelling punishment is completed, and roadbed or the pavement engineering construction on next step original ground top are waited for.This method construction is simple, safety
Reliably, pavement depression caused by cave dwelling can be effectively prevent to collapse and destruction.
Compared with prior art, it is of the invention underlie buried cave dwelling road structure and construction method has the following advantages and
Effect：Underlie buried cave dwelling road structure and the construction method of the present invention, process is simple and short construction period, can be effectively treated
Cave dwelling under roadbed includes mainly surveying and locating, preparation of construction, code block woven bag, close portal, laying high-strength polyester adds
The several steps of muscle strainer；Cave dwelling is filled using sandstone woven bag, filler economy, method is simple, substantially increases construction effect
Rate reduces construction cost；Grouting filling hole reduces settlement after construction and the deformation of cave dwelling, improves subgrade stability；
Five times of holes of original ground can increase substantially cave dwelling across laying high-strength polyester reinforcement strainer in range and punish Duan Lu above cave dwelling
The globality of base, road differential settlement caused by effectivelying prevent cave dwelling punishment section subgrade settlement to come to nothing.
In conclusion underlie buried cave dwelling road structure and the construction method of the present invention are suitable for underliing buried depth 3m≤H≤
The roadbed of cave dwelling basicly stable 15m, step is simple, reasonable design and realize it is convenient, can it is simple, quickly to loess kiln
Hole roadbed is handled, and has good popularizing application prospect.
Several embodiments of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
Cannot the limitation to the scope of the claims of the present invention therefore be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
- The buried cave dwelling road structure 1. one kind underlies, the road structure for be distributed with below proposed road buried depth 3m~ The section of cave dwelling (1) between 15m, it is characterised in that：The road structure includes that layering code is built in the cave dwelling (1) The mortar flag stone (3) of interior sandstone woven bag (2), closing cave dwelling (1) portal is poured in the mortar flag stone (3) Afterwards on the slurries (4) internal with the cave dwelling (1) and the original ground (9) being laid on above the cave dwelling (1) Reinforcement strainer (8), the original ground (9) are natively basal plane.
- 2. the buried cave dwelling road structure according to claim 1 that underlies, it is characterised in that：The reinforcement strainer (8) is indulged To laying length be the cave dwelling (1) hole away from five times, longitudinal laying length of the reinforcement strainer (8) be 15m~ The lateral laying length of 20m, the reinforcement strainer (8) are deep slightly larger than the hole of the cave dwelling (1), adjacent reinforcement filter Net (8) lap width is 0.1m~0.2m.
- 3. the buried cave dwelling road structure according to claim 2 that underlies, it is characterised in that：The reinforcement strainer (8) is height Strong polyester reinforcement strainer (8), stretch modulus >=1000kN/m when longitudinal 2% elongation of the high-strength polyester reinforcement strainer (8), Lengthwise elongation at break≤12% of the high-strength polyester reinforcement strainer (8), the infiltration system of the high-strength polyester reinforcement strainer (8) Number≤1.0cm/s, 120 years long-term reduction factor of creep strength≤1.45 of the high-strength polyester reinforcement strainer (8), the high-strength polyester Breadth >=5.0m of reinforcement strainer (8).
- 4. the buried cave dwelling road structure according to claim 2 that underlies, it is characterised in that：The sandstone woven bag (2) is The width of PP Polywoven Bags, the sandstone woven bag (2) is 0.45m~0.65m, and the length of the sandstone woven bag (2) is 0.6m~1.0m, the built-in sand filling of the sandstone woven bag (2), rubble, sand gravel.
- 5. the buried cave dwelling road structure according to claim 2 that underlies, it is characterised in that：The slurries (4) be M5 or The cement mortar of M7.5, presetting period are more than or equal to 6h.
- 6. the buried cave dwelling road structure according to claim 2 that underlies, it is characterised in that：The block of the mortar flag stone (3) It is 1.0m~2.0m to build thickness, and the masonry mortar of the mortar flag stone (3) uses the cement mortar of M7.5 or M10.
- 7. the buried cave dwelling road structure according to claim 6 that underlies, it is characterised in that：It is pre- in the mortar flag stone (3) There are the injected hole (6) being put into for conveying the Grouting Pipe (5) of the slurries (4), the top of the injected hole (6) is equipped with described in confession The extravasating hole (7) that slurries (4) overflow.
- 8. the buried cave dwelling road structure according to claim 7 that underlies, it is characterised in that：The Grouting Pipe (5) is outer Diameter 40mm~50mm seamless steel pipes, Grouting Pipe (5) length are slightly less than the depth of the cave dwelling (1), the injected hole (6) at 5cm~10cm at the top of the portal, the aperture of the injected hole (6) is 45mm~55mm.
- 9. a kind of construction method of the buried cave dwelling road structure according to claim 1 that underlies, includes the following steps：Step a) measures buried depth, the length of the cave dwelling (1)；Step b) weaves according to the buried depth for the cave dwelling (1) for measuring gained in step a), length to prepare the sandstone Bag (2), mortar flag stone (3), Grouting Pipe (5), slurries (4)；Step c), layering code builds the sandstone woven bag (2) to filling up the entire cave dwelling in the cave dwelling (1) (1)；Step d) closes portal, the mortar flag stone (3) in the portal of the cave dwelling (1) with the mortar flag stone (3) In be reserved for being inserted into the injected hole (6) of the Grouting Pipe (5) and the extravasating hole (7) above the injected hole (6)；Step e), from the insertion Grouting Pipe (5) in the injected hole (6) to the cave dwelling (1) interior reperfusion serosity (4), Until extracting the Grouting Pipe (5) out after having slurries spilling in the extravasating hole (7), the injected hole (6) and the excessive slurry are closed Hole (7)；Step f) is laid with high-strength polyester reinforcement strainer (8) on the original ground (9) above the cave dwelling (1).
- 10. the construction method of the buried cave dwelling road structure according to claim 9 that underlies, it is characterised in that：In the step b), the sandstone woven bag (2) be built-in sand filling, rubble, sand gravel PP Polywoven Bags, width For 0.45m~0.65m, length is 0.60m~1.00m；In the step d), the thickness of building by laying bricks or stones of the mortar flag stone (3) is 1.0m~2.0m, and the mortar flag stone (3) uses The masonry of cement mortar of M7.5 or M10；In the step e), extracts Grouting Pipe (5) out in due course during the slurries (4) are perfused and control draw speed, make The Grouting Pipe 5 is obtained in 4 or less 0.5m~1.0m of the slurries；In the step f), the longitudinal laying length of the high-strength polyester reinforcement strainer (8) be the cave dwelling (1) hole away from Five times, the lateral laying length high-strength polyester reinforcement strainer (8) deep slightly larger than the hole of the cave dwelling (1), adjacent Lap width is 0.1m~0.2m.
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Application publication date: 20180814 |