CN110055845A - A kind of construction method that highway bridge and culvert two sides are soft soil roadbed - Google Patents
A kind of construction method that highway bridge and culvert two sides are soft soil roadbed Download PDFInfo
- Publication number
- CN110055845A CN110055845A CN201910408022.4A CN201910408022A CN110055845A CN 110055845 A CN110055845 A CN 110055845A CN 201910408022 A CN201910408022 A CN 201910408022A CN 110055845 A CN110055845 A CN 110055845A
- Authority
- CN
- China
- Prior art keywords
- soft soil
- drainage hole
- soil roadbed
- culvert
- sides
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Classifications
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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
- E01C3/04—Foundations produced by soil stabilisation
-
- 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
- E01C3/06—Methods or arrangements for protecting foundations from destructive influences of moisture, frost or vibration
Abstract
The invention discloses a kind of construction methods that highway bridge and culvert two sides are soft soil roadbed, comprising the following steps: S1, Position Design determine drainage hole and pile driving position according to soft soil roadbed process range；S2, production drainage hole, drill out drainage hole in soft soil roadbed corresponding position, are then reinforced by pervious concrete to drainage hole side wall；Timber is driven on soft soil roadbed corresponding position by S3, piling；The ponding in drainage hole is discharged by S4, draining；S5, filler fill coarse sand or stone in drainage hole.Piling can be squeezed soft soil roadbed, it can be compacted soft soil roadbed, again can will be soft soil roadbed in moisture be squeezed into drainage hole, to reduce water content and the gap in soft soil roadbed, then water is drained from drainage hole, so, can effectively it improve soft soil roadbed, drainage hole and timber can play the effect of support in the later period again simultaneously, and the two can effectively improve the service life of soft soil roadbed upper road under combining.
Description
Technical field
The present invention relates to construction technology of soft roadbed field, in particular to a kind of construction that highway bridge and culvert two sides are soft soil roadbed
Method.
Background technique
Due to China market rapid development of economy, the development of tourist industry is also getting faster, this makes highway in China and bridge
The project of beam building also gradually increases, and to build the highway of more qualifications and bridge construction, largely need
It carries out on soft soil foundation construction and technical processing.
Because of the limpness of soft soil foundation, general soft soil foundation is not suitable for doing supporting course, in order to give the shape of ground
Certain processing is done to soft soil foundation at laying the foundation.Since the water content of weak soil is high, hole is larger, compressibility is higher
And shearing strength is lower, therefore, it is very easy to the influence of be under pressure deformation and sedimentation etc..If in the construction of bridge highway engineering
In the process, soft soil foundation is not handled well, sedimentation, unilateral expansion occur for the high embankment that will lead to some ends of the bridge
And phenomena such as sliding, to reduce the service life of bridge, even jeopardize the safety of people and vehicle.
For the soft soil roadbed of bridges and culverts two sides, currently used processing method mainly has cushion, preloading, dirt
Stake, CFG, cement mixing pile, reinforced concrete pile and heavy-tamping method, these modes realize that the cardinal principle of reinforcing is broadly divided into two
Kind, one is such as cushions and preloading, i.e., enhance the structure on soft soil roadbed surface layer；And another kind then passes through
The mode road pavement of piling is supported.Aforesaid way is passing through one although reinforcing reinforcing can be carried out to soft soil roadbed
A degree of sedimentation occurs for the meeting being still unavoidable from after the use fixed time, therefore, it is still necessary to existing reinforcing mode
It optimizes, prolongs its service life.
Summary of the invention
The object of the present invention is to provide a kind of construction methods that highway bridge and culvert two sides are soft soil roadbed, have and extend positioned at weak soil
The effect of the service life of the road of roadbed section.
Above-mentioned technical purpose of the invention has the technical scheme that
A kind of construction method that highway bridge and culvert two sides are soft soil roadbed, comprising the following steps:
S1, Position Design determine drainage hole and pile driving position according to soft soil roadbed process range；
S2, production drainage hole, drill out drainage hole in soft soil roadbed corresponding position, then by pervious concrete to drainage hole side
Wall is reinforced；
Timber is driven on soft soil roadbed corresponding position by S3, piling；
The ponding in drainage hole is discharged by S4, draining；
S5, filler fill coarse sand or stone in drainage hole.
So set, piling can squeeze soft soil roadbed, can be compacted it is soft soil roadbed and will be soft soil roadbed in
Moisture be squeezed into drainage hole, to reduce the water content in soft soil roadbed and gap, then water is taken out from drainage hole
It is dry, it so, it is possible effectively to improve soft soil roadbed, while drainage hole and timber can play the effect of support in the later period again,
The two can effectively improve the service life of soft soil roadbed upper road under combining.
Further preferably are as follows: further include having step S6, compacting, be compacted by road roller to soft soil roadbed.
So set, after carrying out compacting by timber and reducing gap, then soft soil roadbed surface is compacted, wherein
Timber can improve deeper soil, but correspondingly, its improvement can be weaker than superficial compaction, therefore, on the basis of timber
Again by being compacted to surface, very effective soft soil roadbed integral strength can be improved.
Further preferably are as follows: before compacting, stone bed course is first laid with by stone on soft soil roadbed surface.
So set, the laying of stone, can further strengthen soft soil roadbed surface strength, it is made to be less prone to office
The situation of the deformations such as portion's recess occurs.
Further preferably are as follows: sand bedding course is equipped with by gravel below the stone bed course.
So set, the setting of sand bedding course can play the effect of waterproof, after early period is to soft soil roadbed strengthen,
Later period in use, if soft soil roadbed middle into excessive moisture, equally will affect its service life, therefore, the resistance of sand bedding course
Every can further extend soft soil roadbed service life.
Further preferably are as follows: in the step S2, when pervious concrete reinforces drainage hole side wall, in formation
One suction hose is set in concrete strengthening layer, and the bottom end of the suction hose is pierced by concrete strengthening layer and is connected to drainage hole, described
The top of suction hose is formed with a water sucking mouth at the top of concrete strengthening layer；
After the compacting for completing step S6, the water in drainage hole is sucked out by suction hose.
In to weak soil substrate surface compacting process, there is partial moisture that can enter in drainage hole, therefore, suction can be passed through
Water pipe extracts the most of moisture in it out, and the water that so can be avoided in compacting process is all pressed depths, causes depths native
The excess moisture of earth and soften, so as to preferably improve weak soil base.
Further preferably are as follows: the concrete strengthening layer pours mode are as follows:
The plastic tube that a diameter is less than drainage hole is first plugged in drainage hole, wherein the bottom end of suction hose is arranged across plastic tube,
And it is inserted into drainage hole together with plastic tube；Then pervious concrete is poured into and is formed between plastic tube and the inner wall of drainage hole
In gap.
So set, pouring for concrete strengthening layer is completed, meanwhile, it is capable to complete consolidating for suction hose when pouring
It is fixed.
Further preferably are as follows: the plastic tube includes outer tube and the inner tube that is inserted in outer tube, is provided on the outer tube
Several through-holes；Wherein, after completing the pouring of the concrete strengthening layer, and inner tube is taken out before its solidification.
So set, pouring for concrete strengthening layer can be completed by plastic tube, simultaneously as the setting of inner and outer pipes,
When pouring, concrete can be limited in the gap formed between plastic tube and the inner wall of drainage hole by inner and outer pipes, and complete to pour
After building, inner tube can be taken out, and outer tube is together with concreting, in this way, the through-hole on outer tube makes concrete strengthening
It is connected in layer and drainage hole, avoids the formation of the structure of waterproof, water in soil is caused to cannot be introduced into drainage hole.
Further preferably are as follows: in the step S5, stone is filled in drainage hole.
So set, gap is smaller between gravel, moisture storage capacity is few, and stone then has biggish water yield, moreover it is possible to keep away
Exempt from gravel and blocks suction hose.
Further preferably are as follows: the sand bedding course with a thickness of 0.6 ~ 1m.
It is arranged such, it is ensured that its waterproof effect, while the surface layer of reinforcing soft soil base make it further be not susceptible to sink
Drop.
Further preferably are as follows: the sand bedding course is laid with using fine sand.
So set, fine sand is laid with, the gap to be formed is smaller, can effectively improve the waterproof effect of sand bedding course.
In conclusion the invention has the following advantages:
1, improve weak soil base jointly in such a way that timber and surface layer are compacted the two, the gap in weak soil base and water is effectively reduced
Point；
2, the setting of timber and drainage hole can play support effect, and soft soil roadbed upper road is made to be not susceptible to settle；
3, the setting of sand bedding course and stone bed course, is capable of the surface structure intensity of reinforcing soft soil base, while can play well
Waterproof effect avoids excessive water from penetrating into weak soil base and it is caused to soften again.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of drainage hole in the present embodiment, shows structure when concrete strengthening layer pours；
Fig. 2 is structural schematic diagram when driving piles in the present embodiment；
Fig. 3 is the schematic diagram of positional relationship between drainage hole and timber in the present embodiment；
Fig. 4 is that real-time structural schematic diagram is pressed in the present embodiment.
In figure, 100, drainage hole；200, plastic tube；210, outer tube；211, through-hole；220, inner tube；300, suction hose；400,
Concrete strengthening layer；500, timber；600, sand bedding course；700, stone bed course.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
In the description of the present invention, it is to be understood that, the orientation or position of the instructions such as term " on ", "lower", "left", "right"
Setting relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present invention and simplification of the description, rather than
The device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot
It is interpreted as limitation of the present invention.
A kind of construction method that highway bridge and culvert two sides are soft soil roadbed, comprising the following steps:
S1, Position Design measure the underlying parameters such as water content, the pliability of weak soil base, then according to soft soil roadbed processing
Range draws drawing, and determines drainage hole 100 and pile driving position；
S2, production drainage hole 100 drill out drainage hole 100 in soft soil roadbed corresponding position by drilling machine according to drawing,
In, the diameter of drainage hole 100 is 0.5 ~ 1m, and depth is 5 ~ 10m, and the specific data of drainage hole 100 are according to the aqueous of soil matrix layer
Depending on the underlying parameters such as amount, pliability.
After completing punching, as described in Figure 1, a plastic tube 200 is inserted into drainage hole 100, wherein insert in plastic tube 200
If while plug a suction hose 300, the gap that suction hose 300 is formed between plastic tube 200 and the inner wall of drainage hole 100
Interior, the bottom end of suction hose 300 is pierced by from the bottom of plastic tube 200 into drainage hole 100, and the top of suction hose 300 is located at draining
The opening in hole 100, place height is lower than the opening of drainage hole 100 0.5m.
After completing the plugging of plastic tube 200, pervious concrete is poured by plastic tube 200 and row by filling concrete machine
In the gap formed between the inner wall in water hole 100, reinforcing is carried out to 100 side wall of drainage hole with this and forms concrete strengthening layer 400,
In, concreting height cannot not there be the opening at 300 top of suction hose, make suction hose 300 on the top of concrete strengthening layer 400
Portion forms a water sucking mouth.
Wherein, plastic tube 200 includes outer tube 210 and inner tube 220, and inner tube 220 is plugged in outer tube 210, and pastes between the two
Close setting.Several through-holes 211 is provided on outer tube 210, through-hole 211 is distributed on entire outer tube 210, meanwhile, for it
There can be certain water-stagnating effect, through-hole 211 can be arranged to pyramidal structure of the tip towards axial line, complete coagulation
After the pouring of native reinforcing layer 400, and inner tube 220 is taken out from drainage hole 100 before concrete setting.
S3, piling, as Fig. 2 and Fig. 3, according to drawing, timber 500 are driven into soft after the solidification of concrete strengthening layer 400
On the corresponding position of dirt road base, the distance between timber 500 is greater than 1.5m, wherein timber 500 is in soft soil roadbed upper molding waveform
Shape, adjacent two drainage hole 100 are located at wavy two sides, and such setting can preferably arrange moisture in weak soil base
Out.
The ponding in drainage hole 100 is discharged after completing piling operation by S4, draining.
S5, filler fill stone in drainage hole 100, wherein the top of stone landfill height and concrete strengthening layer 400
Portion is identical.
S6, compacting, as shown in figure 4, being first laid with sand bedding course 600, the thickness of sand bedding course 600 by fine sand on soft soil roadbed surface
Degree is 0.6 ~ 1m, and the thicker thickness the better herein.A stone bed course 700 is equipped with by stone above sand bedding course 600, wherein sand
Bed course 600 and stone bed course 700 avoid the water hole 100 that begins to rehearse when being laid with, and after completing to be laid with, are compacted by road roller, wherein
Number of machine passes is 5-10 times, is specifically seen depending on consolidation effect, when difference in height does not change substantially after adjacent compacting twice.
After completing compacting, the water accumulated in drainage hole 100 is extracted out by water sucking mouth, then will be arranged by fine sand and stone
Water hole 100 fills.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
Member can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at this
All by the protection of Patent Law in the protection scope of invention.
Claims (10)
1. a kind of construction method that highway bridge and culvert two sides are soft soil roadbed, characterized in that the following steps are included:
S1, Position Design determine drainage hole (100) and pile driving position according to soft soil roadbed process range；
S2, production drainage hole (100), drill out drainage hole (100) in soft soil roadbed corresponding position, then pass through pervious concrete
Drainage hole (100) side wall is reinforced；
Timber (500) is driven on soft soil roadbed corresponding position by S3, piling；
The ponding in drainage hole (100) is discharged by S4, draining；
S5, filler, landfill coarse sand or stone in drainage hole (100).
2. a kind of construction method that highway bridge and culvert two sides are soft soil roadbed according to claim 1, it is characterized in that: further including having
Step S6, it is compacted, is compacted by road roller to soft soil roadbed.
3. a kind of construction method that highway bridge and culvert two sides are soft soil roadbed according to claim 2, it is characterized in that: being compacted
Before, stone bed course (700) are first laid with by stone on soft soil roadbed surface.
4. a kind of construction method that highway bridge and culvert two sides are soft soil roadbed according to claim 3, it is characterized in that: in the stone
Sand bedding course (600) are equipped with by gravel below bed course (700).
5. a kind of construction method that highway bridge and culvert two sides are soft soil roadbed according to Claims 2 or 3 or 4, it is characterized in that: institute
It states in step S2, when pervious concrete reinforces drainage hole (100) side wall, in the concrete strengthening layer (400) of formation
One suction hose of interior setting (300), the bottom end of the suction hose (300) are pierced by concrete strengthening layer (400) and drainage hole (100) even
Logical, the top of the suction hose (300) is formed with a water sucking mouth at the top of concrete strengthening layer (400)；
After the compacting for completing step S6, the water in drainage hole (100) is sucked out by suction hose (300).
6. a kind of construction method that highway bridge and culvert two sides are soft soil roadbed according to claim 5, characterized in that the coagulation
Native reinforcing layer (400) pours mode are as follows:
The plastic tube (200) that a diameter is less than drainage hole (100) is first plugged in drainage hole (100), wherein suction hose (300)
Bottom end be arranged across plastic tube (200), and be inserted into drainage hole (100) together with plastic tube (200)；Then by permeable coagulation
Soil is poured into the gap formed between plastic tube (200) and the inner wall of drainage hole (100).
7. a kind of construction method that highway bridge and culvert two sides are soft soil roadbed according to claim 6, it is characterized in that: the plastics
Managing (200) includes outer tube (210) and the inner tube (220) being inserted in outer tube (210), is provided on the outer tube (210) several
Through-hole (211)；Wherein, after completing the pouring of the concrete strengthening layer (400), and by inner tube (220) before its solidification
It takes out.
8. a kind of construction method that highway bridge and culvert two sides are soft soil roadbed according to claim 3, it is characterized in that: the step
In S5, stone is filled in drainage hole (100).
9. a kind of construction method that highway bridge and culvert two sides are soft soil roadbed according to claim 8, it is characterized in that: the sand pad
Layer (600) with a thickness of 0.6 ~ 1m.
10. a kind of construction method that highway bridge and culvert two sides are soft soil roadbed according to claim 9, it is characterized in that: the sand
Bed course (600) is laid with using fine sand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910408022.4A CN110055845B (en) | 2019-05-15 | 2019-05-15 | Construction method for soft soil roadbed on two sides of highway bridge and culvert |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910408022.4A CN110055845B (en) | 2019-05-15 | 2019-05-15 | Construction method for soft soil roadbed on two sides of highway bridge and culvert |
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| CN110055845B CN110055845B (en) | 2021-06-01 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112575638A (en) * | 2020-12-11 | 2021-03-30 | 宁波华康陆鼎建设有限公司 | Roadbed reinforcing structure adopting steel reinforcement cage bamboo shoot piles and construction process of roadbed reinforcing structure |
| CN114808580A (en) * | 2022-05-10 | 2022-07-29 | 安徽厚普建设工程有限公司 | Construction method for settlement-preventing highway subgrade in soft soil area |
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| CN114808580A (en) * | 2022-05-10 | 2022-07-29 | 安徽厚普建设工程有限公司 | Construction method for settlement-preventing highway subgrade in soft soil area |
| CN114808580B (en) * | 2022-05-10 | 2023-12-12 | 安徽厚普建设工程有限公司 | Construction method for anti-sedimentation highway subgrade in soft soil area |
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