CN106192649A - A kind of construction method processing problem of bumping at bridge-head - Google Patents
A kind of construction method processing problem of bumping at bridge-head Download PDFInfo
- Publication number
- CN106192649A CN106192649A CN201610572742.0A CN201610572742A CN106192649A CN 106192649 A CN106192649 A CN 106192649A CN 201610572742 A CN201610572742 A CN 201610572742A CN 106192649 A CN106192649 A CN 106192649A
- Authority
- CN
- China
- Prior art keywords
- bridge
- geonet
- earthfill
- soil cement
- cement grouting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/005—Soil-conditioning by mixing with fibrous materials, filaments, open mesh or the like
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
Abstract
The invention discloses a kind of construction method processing problem of bumping at bridge-head.A kind of attachment structure is set, including CFG stake, earthfill structure, soil cement grouting treatment district and geonet；Sequentially pass through the original roadbed below earthfill structure to flatten laying CFG stake below shake pressure, earthfill structure, start to lay geonet from the bottom to top from bottom and the step such as earthfill structure, soil cement grouting solidification, complete whole work progress.The inventive method is simple to operate, maintenance costs that highway construction administration department for end of the bridge process can be greatly decreased, effectively reduce problem of bumping at bridge-head, improve comfortableness and the safety of driving, construction quality is high, differential settlement between abutment and original roadbed is reduced significantly, promotes the service life on road surface.
Description
Technical field
The invention belongs to road-bridge transition section processing technology field, particularly to a kind of construction party processing problem of bumping at bridge-head
Method.
Background technology
The most both at home and abroad for problem of bumping at bridge-head, conventional construction method is to arrange hazard to bridge's pier at road-bridge transition section,
Or carry out stiffening basic ground, such as methods such as sand compaction pile, CFG stake and pile tubes.From engineering practice effect, use bridge
Platform attachment strap, easily produces relative settlement and transverse crack on the end of attachment strap and the road surface of roadbed intersection, easily produces " secondary
Jump car " problem；When using other single foundation reinforcement methods, filled height is excessive, or roadbed is with the abutment sedimentation time not
With, therefore can not solve abutment and settlement of subgrade problem very well.Therefore, the demand for novel construction method is compeled at eyebrow
Eyelash.
Summary of the invention
It is an object of the invention to overcome deficiency of the prior art, it is provided that a kind of construction party processing problem of bumping at bridge-head
Method.
Concretely comprise the following steps:
(1) arranging a kind of attachment structure, this attachment structure is between abutment and original roadbed；This attachment structure include CFG stake,
Earthfill structure, soil cement grouting treatment district and geonet；CFG stake is positioned at orlop, and it effectively strengthens original roadbed, is used for subtracting
The sedimentation of few original roadbed；Earthfill structure is positioned on CFG stake, and earthfill structure is separated by geonet and parallel layering is filled out by filler
Building, every layer of geonet layer each with earthfill structure filler is locked in together, and forms stable plane, for effectively reducing and controlling to be somebody's turn to do
The deformation of attachment structure, and each layer of earthfill structure is compacted after filling, it is possible to reduce the sedimentation of this attachment structure；Soil cement fills
Slurry treatment region is positioned at the top of earthfill structure, and wedge shaped, one end is connected with the Bridge-Culvert Platform Back after abutment, the other end and original road
Base is connected, and soil cement grouting treatment district, by treated length is Bridge-Culvert Platform Back length the 1/2 ~ 2/3 of Bridge-Culvert Platform Back side, gos deep into former
A length of 10 ~ the 20m of beginning roadbed.
It is 9 ~ 13% that the soil water mud in described soil cement grouting treatment district mixes mass ratio.
Described geonet specification is material thickness 1.25mm, highly 10cm or 15cm, and geonet welds away from 40cm or 47cm, geonet
Intensity index: hot strength >=25MPa, stretch modulus >=650MPa, weld seam room temperature peel strength >=100Ncm, low temperature brittleness temperature
Spend≤50 DEG C.
(2) between the transitional region to Bridge-Culvert Platform Back and original roadbed, the original roadbed below earthfill structure, flatten
Shake pressure.
(3) below earthfill structure, CFG stake is laid.
(4) start the most first to lay one layer of geonet from bottom, on geonet top, earthfill structure carried out stone,
One end of earthfill structure is fixed to Bridge-Culvert Platform Back, and the other end is fixed to original roadbed, and stone employing manually combines with machinery
Mode, first fills out thickness with machinery filling to void, then uses hand-stuff dead angle, then flatten and be compacted, laying complete one layer.
(5) repeating step (4) from the bottom to top, until laying to soil cement grouting treatment district, carrying out soil cement grouting solidification,
I.e. complete construction.
The inventive method is simple to operate, it is possible to upkeep charges that highway construction administration department for end of the bridge process are greatly decreased
With, effectively reducing problem of bumping at bridge-head, improve comfortableness and the safety of driving, construction quality is high so that abutment and original road
Differential settlement between base is reduced significantly, promotes the service life on road surface.
Accompanying drawing explanation
Fig. 1 is the structural representation of the attachment structure used in the embodiment of the present invention.
The original roadbed of labelling in figure: 1-；2-CFG stake；3-Bridge-Culvert Platform Back；4-earthfill structure；5-soil cement grouting treatment
District；6-geonet；7-abutment.
Detailed description of the invention
Embodiment:
(1) a kind of attachment structure is set, as it is shown in figure 1, this attachment structure is between abutment 7 and original roadbed 1；This connection is tied
Structure includes CFG stake 2, earthfill structure 4, soil cement grouting treatment district 5 and geonet 6；CFG stake 2 is positioned at orlop, and it is effectively reinforced
Original roadbed 1, for reducing the sedimentation of original roadbed 1；Earthfill structure 4 is positioned on CFG stake 2, and earthfill structure 4 is by geonet
6 separations parallel layering are filled by filler, and 4 each layers of filler of every layer of geonet 6 and earthfill structure are locked in together, and are formed stable
Plane, for effectively reducing and control the deformation of this attachment structure, and each layer of earthfill structure 4 is compacted after filling, it is possible to fall
The sedimentation of this attachment structure low；Soil cement grouting treatment district 5 is positioned at the top of earthfill structure 4, wedge shaped, behind one end and abutment 7
The Bridge-Culvert Platform Back 3 in face connects, and the other end is connected with original roadbed 1, and soil cement grouting treatment district 5 is by the place of Bridge-Culvert Platform Back 3 side
Manage the 2/3 of a length of Bridge-Culvert Platform Back 3 length, go deep into a length of 15m of original roadbed 1.
It is 11% that the soil water mud in described soil cement grouting treatment district 5 mixes mass ratio.
Described geonet 6 specification is material thickness 1.25mm, highly 15cm, and geonet 6 welds away from 47cm, geonet 6 intensity index:
Hot strength is 25MPa, and stretch modulus is 650MPa, and weld seam room temperature peel strength is 100Ncm, and brittle temperature is 50 DEG C.
(2) between the transitional region to Bridge-Culvert Platform Back 3 and original roadbed 1, the original roadbed 1 below earthfill structure 4, carry out
Flatten pressure of shaking.
(3) below earthfill structure 4, CFG stake 2 is laid.
(4) start the most first to lay one layer of geonet 6 from bottom, on geonet 6 top, earthfill structure 4 is spread
Material, one end of earthfill structure 4 is fixed to Bridge-Culvert Platform Back 3, and the other end is fixed to original roadbed 1, and stone uses artificial and mechanical phase
In conjunction with mode, first fill to void with machinery and fill out thickness, then use hand-stuff dead angle, then flatten and be compacted, laying complete one
Layer.
(5) repeating step (4) from the bottom to top, until laying to soil cement grouting treatment district 5, carrying out soil cement grouting solid
Change, i.e. complete construction.
Claims (1)
1. the construction method processing problem of bumping at bridge-head, it is characterised in that concretely comprise the following steps:
(1) arranging a kind of attachment structure, this attachment structure is between abutment and original roadbed；This attachment structure include CFG stake,
Earthfill structure, soil cement grouting treatment district and geonet；CFG stake is positioned at orlop, and it effectively strengthens original roadbed, is used for subtracting
The sedimentation of few original roadbed；Earthfill structure is positioned on CFG stake, and earthfill structure is separated by geonet and parallel layering is filled out by filler
Building, every layer of geonet layer each with earthfill structure filler is locked in together, and forms stable plane, for effectively reducing and controlling to be somebody's turn to do
The deformation of attachment structure, and each layer of earthfill structure is compacted after filling, it is possible to reduce the sedimentation of this attachment structure；Soil cement fills
Slurry treatment region is positioned at the top of earthfill structure, and wedge shaped, one end is connected with the Bridge-Culvert Platform Back after abutment, the other end and original road
Base is connected, and soil cement grouting treatment district, by treated length is Bridge-Culvert Platform Back length the 1/2 ~ 2/3 of Bridge-Culvert Platform Back side, gos deep into former
A length of 10 ~ the 20m of beginning roadbed；
It is 9 ~ 13% that the soil water mud in described soil cement grouting treatment district mixes mass ratio；
Described geonet specification is material thickness 1.25mm, highly 10cm or 15cm, and geonet welds away from 40cm or 47cm, geonet intensity
Index: hot strength25MPa, stretch modulus650MPa, weld seam room temperature peel strength100Ncm, brittle temperature50
℃；
(2) between the transitional region to Bridge-Culvert Platform Back and original roadbed, the original roadbed below earthfill structure, carry out leveling and shake
Pressure；
(3) below earthfill structure, CFG stake is laid；
(4) start the most first to lay one layer of geonet from bottom, on geonet top, earthfill structure is carried out stone, banket
One end of structure is fixed to Bridge-Culvert Platform Back, and the other end is fixed to original roadbed, and stone uses the artificial and mechanical mode combined,
First fill out thickness with machinery filling to void, then use hand-stuff dead angle, then flatten and be compacted, laying complete one layer；
(5) repeating step (4) from the bottom to top, until laying to soil cement grouting treatment district, carrying out soil cement grouting solidification, the completeest
Become construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610572742.0A CN106192649A (en) | 2016-07-21 | 2016-07-21 | A kind of construction method processing problem of bumping at bridge-head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610572742.0A CN106192649A (en) | 2016-07-21 | 2016-07-21 | A kind of construction method processing problem of bumping at bridge-head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106192649A true CN106192649A (en) | 2016-12-07 |
Family
ID=57493624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610572742.0A Pending CN106192649A (en) | 2016-07-21 | 2016-07-21 | A kind of construction method processing problem of bumping at bridge-head |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107354937A (en) * | 2017-07-03 | 2017-11-17 | 中建市政工程有限公司 | A kind of construction method effectively alleviated transition slab at bridge head sedimentation and jump car |
| CN110512590A (en) * | 2019-07-11 | 2019-11-29 | 桂林理工大学 | It is a kind of for preventing the construction method of bridge foundation differential settlement |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07158047A (en) * | 1993-10-13 | 1995-06-20 | Maeda Corp | High moisture content soil improving material and construction method for road bed and banking |
| CN201850505U (en) * | 2010-11-18 | 2011-06-01 | 中交第一公路勘察设计研究院有限公司 | Rigid-flexible transition structure capable of preventing bumping at bridge-head |
| CN102635104A (en) * | 2012-04-11 | 2012-08-15 | 华南理工大学 | Wedge-shaped Geocell cement reinforced soil structure for road-bridge connection and construction method thereof |
| CN203383116U (en) * | 2013-05-31 | 2014-01-08 | 浙江中威交通建设有限公司 | Road-bridge connecting section variable rigidity roadbed |
| CN103628376A (en) * | 2013-11-20 | 2014-03-12 | 长安大学 | Bridgehead vehicle bumping prevention structure based on concrete composite pavement and laying method thereof |
| CN104358199A (en) * | 2014-11-10 | 2015-02-18 | 哈尔滨工业大学 | Road-bridge transition section structure of high-grade highway suitable for short construction period condition in cold region |
| CN204401447U (en) * | 2015-01-27 | 2015-06-17 | 重庆交通大学 | A kind of structure preventing bumping at bridge-head |
-
2016
- 2016-07-21 CN CN201610572742.0A patent/CN106192649A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07158047A (en) * | 1993-10-13 | 1995-06-20 | Maeda Corp | High moisture content soil improving material and construction method for road bed and banking |
| CN201850505U (en) * | 2010-11-18 | 2011-06-01 | 中交第一公路勘察设计研究院有限公司 | Rigid-flexible transition structure capable of preventing bumping at bridge-head |
| CN102635104A (en) * | 2012-04-11 | 2012-08-15 | 华南理工大学 | Wedge-shaped Geocell cement reinforced soil structure for road-bridge connection and construction method thereof |
| CN203383116U (en) * | 2013-05-31 | 2014-01-08 | 浙江中威交通建设有限公司 | Road-bridge connecting section variable rigidity roadbed |
| CN103628376A (en) * | 2013-11-20 | 2014-03-12 | 长安大学 | Bridgehead vehicle bumping prevention structure based on concrete composite pavement and laying method thereof |
| CN104358199A (en) * | 2014-11-10 | 2015-02-18 | 哈尔滨工业大学 | Road-bridge transition section structure of high-grade highway suitable for short construction period condition in cold region |
| CN204401447U (en) * | 2015-01-27 | 2015-06-17 | 重庆交通大学 | A kind of structure preventing bumping at bridge-head |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107354937A (en) * | 2017-07-03 | 2017-11-17 | 中建市政工程有限公司 | A kind of construction method effectively alleviated transition slab at bridge head sedimentation and jump car |
| CN110512590A (en) * | 2019-07-11 | 2019-11-29 | 桂林理工大学 | It is a kind of for preventing the construction method of bridge foundation differential settlement |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161207 |