CN106812150A - A kind of mountain area steep slope region Road Bridge Pile Foundation construction method - Google Patents
A kind of mountain area steep slope region Road Bridge Pile Foundation construction method Download PDFInfo
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- CN106812150A CN106812150A CN201710148256.0A CN201710148256A CN106812150A CN 106812150 A CN106812150 A CN 106812150A CN 201710148256 A CN201710148256 A CN 201710148256A CN 106812150 A CN106812150 A CN 106812150A
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- pile foundation
- steep slope
- mountain area
- road bridge
- construction method
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/36—Concrete or concrete-like piles cast in position ; Apparatus for making same making without use of mouldpipes or other moulds
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a kind of mountain area steep slope region Road Bridge Pile Foundation construction method of technical field of bridge engineering, made and rockbolt installation and slip casting step including preparations, manually digging hole, rigging up, retaining wall concrete before construction, the mountain area steep slope region Road Bridge Pile Foundation construction method is comprised the following steps that：S1：Prepare before construction；S2：Manually digging hole；S3：Rigging up；S4：Retaining wall concrete makes and rockbolt installation；S5：Slip casting, the present invention is using concrete follow-up retaining wall, it is ensured that the pouring quality of construction safety and pile foundation concrete, the plant equipment for using is few, reduces construction input, reduces construction costs, and the professional degree constructed is small, constructs wide, excavates many, the accelerating construction progress of point.
Description
Technical field
The present invention relates to technical field of bridge engineering, specially a kind of mountain area steep slope region Road Bridge Pile Foundation construction party
Method.
Background technology
In Freeway of Mountain Range or steep slope road section Bored Pile of Bridge with a varied topography construction, often easily because technical management is not tight
Careful or construction organization is not proper, so as to cause quality and potential safety hazard in following several respects：One is to landform and design before constructing
Do not do and verify contrast in detail, drawing examination working depth not enough, especially the design cycle is more long or design after construct later item
Mesh, topographic change is larger caused by the reason such as washing away, adopting sand, fetching earth because of surface water, is but blindly constructed according to construction drawing, makes pile foundation
Plinth summit portion leaks outside or to face slope country rock thickness excessively thin, causes effective length not enough, and bearing capacity weakens；Two is construction preceding to construction
Sidewalk, job platform etc. do not do exploration in detail, and big digging is just opened greatly without overall planning, cause terrain configuration at stake position to suffer people
It is destruction, but design is not adjusted, forms hidden danger of quality；Three be for reduce difficulty of construction, simplify working procedure and in pile foundation
During operation platform, disposably excavate together with cushion cap part country rock, it is artificial to change bridge pier structure design stress system.Due to steep hillslope
Section pile foundation top shallow embedding situation is more, and pile foundation is generally more long, and it is more to pass through bottom, because geological drilling density not enough caused by practically
Matter and different design, such as change is implemented in control not in time, will bury hidden danger of quality.Therefore, steep we have proposed a kind of mountain area
Hillside fields section Road Bridge Pile Foundation construction method comes into operation, to solve the above problems.
The content of the invention
It is an object of the invention to provide a kind of mountain area steep slope region Road Bridge Pile Foundation construction method, to solve the above-mentioned back of the body
The problem proposed in scape technology.
To achieve the above object, the present invention provides following technical scheme：A kind of mountain area steep slope region Road Bridge Pile Foundation is applied
Preparation, manually digging hole, rigging up, retaining wall concrete make and rockbolt installation and slip casting step, the mountain area before work method, including construction
Steep slope region Road Bridge Pile Foundation construction method is comprised the following steps that：
S1：Prepare before construction：Checked the stage in drawing, conscientiously check bridge structure size, position elevation, engineering gauge
Calculate, and carry out carefully comparing analysis to whether vertical and horizontal section is consistent with reality at design ground elevation and pier position, to be done before construction
Good sufficient technical data prepares, and determines that pile foundation excavates position and its cutting depth；
S2：Manually digging hole：Manually digging hole is carried out using delaying blasting method, hole wall, each borehole 1 are repaired in scarfing cinder after borehole
~1.3m；
S3：Rigging up：Drilled on stake holes hole wall according to layout design, bore diameter is 100~120mm, drilling is deep
2.5~3.5m of degree, horizontal sextant angle is 8~12 ° of brills, 3 eyelets；
S4：Retaining wall concrete makes and rockbolt installation：The deep holes of 1m are often dug, just concrete dado 1m is used, using bar type anchor pole, by slip casting
Effective reinforcing bar is fixed on anchor pole, anchor pole distance from bottom 5~10cm of bottom hole, and anchor pole top uses the additional structure steel of bilayer φ 12
Muscle is connected with the electric welding of retaining wall concrete bar-mat reinforcement；
S5：Slip casting：Using cement mortar, injected in stake holes by Grouting Pipe, the withdrawing of wherein Grouting Pipe wants uniformly continuous,
Grouting Pipe embedment 0.5~0.8m of Starch Level is kept, the volume of slip casting is not less than design theory amount of calculation.
Preferably, in the step S2, main armament eye is dug in stake holes center, severity control in 1.2~1.5m, with master
Centered on borehole, secondary borehole is excavated around it, the spacing control of each secondary borehole in 0.9~1.1m, depth is 0.9~
1.1m。
Preferably, in the step S4, retaining wall concrete uses zigzag, i.e., the base diameter of the upper end than a upper mould of next mould
Big 10cm, the slider of anchor pole uses the reinforcing bar annulus of φ 6, and, wherein Grouting Pipe is the pvc pipe of φ 15mm every 1m together, and
It is fixed on anchor pole using the reinforcing bar of φ 6.
Preferably, in the step S5, cement mortar uses common medium coarse sand portland cement, particle diameter to be not more than 2mm, water
Gray scale is 0.45, and cement-sand ratio is 1:1.2.
Compared with prior art, the beneficial effects of the invention are as follows：The present invention using concrete follow up retaining wall, it is ensured that construction safety and
The pouring quality of pile foundation concrete, the plant equipment for using is few, reduces construction input, reduces construction costs, and the professional degree constructed
It is small, construct wide, excavate many, the accelerating construction progress of point.
Brief description of the drawings
Fig. 1 is workflow diagram of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Embodiment one
Preparation, manually digging hole, installation are bored before a kind of mountain area steep slope region Road Bridge Pile Foundation construction method, including construction
Machine, retaining wall concrete make and rockbolt installation and slip casting step, the specific step of the mountain area steep slope region Road Bridge Pile Foundation construction method
It is rapid as follows：
S1：Prepare before construction：Checked the stage in drawing, conscientiously check bridge structure size, position elevation, engineering gauge
Calculate, and carry out carefully comparing analysis to whether vertical and horizontal section is consistent with reality at design ground elevation and pier position, to be done before construction
Good sufficient technical data prepares, and determines that pile foundation excavates position and its cutting depth；
S2：Manually digging hole：Manually digging hole is carried out using delaying blasting method, hole wall, each borehole are repaired in scarfing cinder after borehole
1m, a main armament eye is dug in stake holes center, and severity control centered on main armament eye, excavates secondary borehole in 1.2m around it,
The spacing of each secondary borehole is controlled in 0.9m, and depth is 0.9m；
S3：Rigging up：Drilled on stake holes hole wall according to layout design, bore diameter is 100mm, drilling depth
2.5m, horizontal sextant angle is 8 ° of brills, 3 eyelets；
S4：Retaining wall concrete makes and rockbolt installation：The deep holes of 1m are often dug, just concrete dado 1m is used, using bar type anchor pole, by slip casting
Effective reinforcing bar is fixed on anchor pole, anchor pole distance from bottom bottom hole 5cm, anchor pole top using bilayer φ 12 additional structure reinforcing bar and
Retaining wall concrete bar-mat reinforcement electric welding connection, retaining wall concrete uses zigzag, i.e., the base diameter big 10cm of the upper end than a upper mould of next mould,
The slider of anchor pole uses the reinforcing bar annulus of φ 6, and, wherein Grouting Pipe is the pvc pipe of φ 15mm, and uses φ 6 every 1m together
Reinforcing bar be fixed on anchor pole；
S5：Slip casting：Using cement mortar, injected in stake holes by Grouting Pipe, the withdrawing of wherein Grouting Pipe wants uniformly continuous,
Grouting Pipe embedment Starch Level 0.5m is kept, makes the volume of slip casting not less than design theory amount of calculation, during cement mortar is used commonly
Coarse sand portland cement, particle diameter is not more than 2mm, and the ratio of mud is 0.45, and cement-sand ratio is 1:1.2.
Embodiment two
Preparation, manually digging hole, installation are bored before a kind of mountain area steep slope region Road Bridge Pile Foundation construction method, including construction
Machine, retaining wall concrete make and rockbolt installation and slip casting step, the specific step of the mountain area steep slope region Road Bridge Pile Foundation construction method
It is rapid as follows：
S1：Prepare before construction：Checked the stage in drawing, conscientiously check bridge structure size, position elevation, engineering gauge
Calculate, and carry out carefully comparing analysis to whether vertical and horizontal section is consistent with reality at design ground elevation and pier position, to be done before construction
Good sufficient technical data prepares, and determines that pile foundation excavates position and its cutting depth；
S2：Manually digging hole：Manually digging hole is carried out using delaying blasting method, hole wall, each borehole are repaired in scarfing cinder after borehole
1.3m, a main armament eye is dug in stake holes center, and severity control centered on main armament eye, excavates secondary big gun in 1.5m around it
Eye, the spacing of each secondary borehole is controlled in 1.1m, and depth is 1.1m；
S3：Rigging up：Drilled on stake holes hole wall according to layout design, bore diameter is 120mm, drilling depth
3.5m, horizontal sextant angle is 12 ° of brills, 3 eyelets；
S4：Retaining wall concrete makes and rockbolt installation：The deep holes of 1m are often dug, just concrete dado 1m is used, using bar type anchor pole, by slip casting
Effective reinforcing bar is fixed on anchor pole, anchor pole distance from bottom bottom hole 10cm, and anchor pole top uses the additional structure reinforcing bar of bilayer φ 12
It is connected with the electric welding of retaining wall concrete bar-mat reinforcement, retaining wall concrete uses zigzag, i.e., the upper end of next mould is bigger than the base diameter of a upper mould
10cm, the slider of anchor pole uses the reinforcing bar annulus of φ 6, and, wherein Grouting Pipe is every 1m togetherThe pvc pipe of 15mm, and use
The reinforcing bar of φ 6 is fixed on anchor pole；
S5：Slip casting：Using cement mortar, injected in stake holes by Grouting Pipe, the withdrawing of wherein Grouting Pipe wants uniformly continuous,
Grouting Pipe embedment Starch Level 0.8m is kept, makes the volume of slip casting not less than design theory amount of calculation, during cement mortar is used commonly
Coarse sand portland cement, particle diameter is not more than 2mm, and the ratio of mud is 0.45, and cement-sand ratio is 1:1.2.
Embodiment three
Preparation, manually digging hole, installation are bored before a kind of mountain area steep slope region Road Bridge Pile Foundation construction method, including construction
Machine, retaining wall concrete make and rockbolt installation and slip casting step, the specific step of the mountain area steep slope region Road Bridge Pile Foundation construction method
It is rapid as follows：
S1：Prepare before construction：Checked the stage in drawing, conscientiously check bridge structure size, position elevation, engineering gauge
Calculate, and carry out carefully comparing analysis to whether vertical and horizontal section is consistent with reality at design ground elevation and pier position, to be done before construction
Good sufficient technical data prepares, and determines that pile foundation excavates position and its cutting depth；
S2：Manually digging hole：Manually digging hole is carried out using delaying blasting method, hole wall, each borehole are repaired in scarfing cinder after borehole
1.2m, a main armament eye is dug in stake holes center, and severity control centered on main armament eye, excavates secondary big gun in 1.3m around it
Eye, the spacing of each secondary borehole is controlled in 1m, and depth is 1m；
S3：Rigging up：Drilled on stake holes hole wall according to layout design, bore diameter is 100~120mm, drilling is deep
Degree 3m, horizontal sextant angle is 10 ° of brills, 3 eyelets；
S4：Retaining wall concrete makes and rockbolt installation：The deep holes of 1m are often dug, just concrete dado 1m is used, using bar type anchor pole, by slip casting
Effective reinforcing bar is fixed on anchor pole, anchor pole distance from bottom bottom hole 8cm, anchor pole top using bilayer φ 12 additional structure reinforcing bar and
Retaining wall concrete bar-mat reinforcement electric welding connection, retaining wall concrete uses zigzag, i.e., the base diameter big 10cm of the upper end than a upper mould of next mould,
The slider of anchor pole uses the reinforcing bar annulus of φ 6, and, wherein Grouting Pipe is the pvc pipe of φ 15mm, and uses φ 6 every 1m together
Reinforcing bar be fixed on anchor pole；
S5：Slip casting：Using cement mortar, injected in stake holes by Grouting Pipe, the withdrawing of wherein Grouting Pipe wants uniformly continuous,
Grouting Pipe embedment Starch Level 0.7m is kept, makes the volume of slip casting not less than design theory amount of calculation, during cement mortar is used commonly
Coarse sand portland cement, particle diameter is not more than 2mm, and the ratio of mud is 0.45, and cement-sand ratio is 1:1.2.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding can carry out various changes, modification, replacement to these embodiments without departing from the principles and spirit of the present invention
And modification, the scope of the present invention be defined by the appended.
Claims (4)
1. preparation before a kind of mountain area steep slope region Road Bridge Pile Foundation construction method, including construction, manually digging hole, rigging up,
Retaining wall concrete makes and rockbolt installation and slip casting step, it is characterised in that：The mountain area steep slope region Road Bridge Pile Foundation construction method
Comprise the following steps that：
S1：Prepare before construction：Checked the stage in drawing, conscientiously check bridge structure size, position elevation, quantities calculation, and
Carry out carefully comparing analysis to whether vertical and horizontal section is consistent with reality at design ground elevation and pier position, to be carried out before construction fully
Technical data prepare, and determine pile foundation excavate position and its cutting depth；
S2：Manually digging hole：Manually digging hole is carried out using delaying blasting method, scarfing cinder after borehole, repairing hole wall, each borehole 1~
1.3m；
S3：Rigging up：Drilled on stake holes hole wall according to layout design, bore diameter is 100~120mm, drilling depth 2.5
~3.5m, horizontal sextant angle is 8~12 ° of brills, 3 eyelets；
S4：Retaining wall concrete makes and rockbolt installation：The deep holes of 1m are often dug, just concrete dado 1m is used, using bar type anchor pole, Grouting Pipe is used
Reinforcing bar is fixed on anchor pole, anchor pole distance from bottom 5~10cm of bottom hole, anchor pole top using bilayer φ 12 additional structure reinforcing bar and
The electric welding connection of retaining wall concrete bar-mat reinforcement；
S5：Slip casting：Using cement mortar, injected in stake holes by Grouting Pipe, the withdrawing of wherein Grouting Pipe wants uniformly continuous, kept
Grouting Pipe imbeds 0.5~0.8m of Starch Level, the volume of slip casting is not less than design theory amount of calculation.
2. a kind of mountain area steep slope region Road Bridge Pile Foundation construction method according to claim 1, it is characterised in that：It is described
In step S2, main armament eye is dug in stake holes center, severity control in 1.2~1.5m, centered on main armament eye, around it
Secondary borehole is excavated, in 0.9~1.1m, depth is 0.9~1.1m for the spacing control of each secondary borehole.
3. a kind of mountain area steep slope region Road Bridge Pile Foundation construction method according to claim 1, it is characterised in that：It is described
In step S4, retaining wall concrete uses zigzag, i.e., the base diameter big 10cm of the upper end than a upper mould of next mould, the slider of anchor pole
Using the reinforcing bar annulus of φ 6, wherein Grouting Pipe is the pvc pipe of φ 15mm every 1m together, and reinforcing bar using φ 6 is fixed on
On anchor pole.
4. a kind of mountain area steep slope region Road Bridge Pile Foundation construction method according to claim 1, it is characterised in that：It is described
In step S5, cement mortar uses common medium coarse sand portland cement, particle diameter to be not more than 2mm, and the ratio of mud is 0.45, and cement-sand ratio is
1:1.2。
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| CN201710148256.0A CN106812150A (en) | 2017-03-14 | 2017-03-14 | A kind of mountain area steep slope region Road Bridge Pile Foundation construction method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107476319A (en) * | 2017-09-04 | 2017-12-15 | 崔宇鹏 | Mountain area steep slope region Road Bridge Pile Foundation construction method |
| CN108193671A (en) * | 2017-12-15 | 2018-06-22 | 中铁上海工程局集团有限公司 | For the weight dangerous region super-large diameter pile foundation drilling construction method of alpine terrain landforms |
| CN108221966A (en) * | 2018-02-02 | 2018-06-29 | 中国十九冶集团有限公司 | Construction method of mountain deep pile foundation combining manual hole digging and impact hole forming |
| CN108867629A (en) * | 2018-06-05 | 2018-11-23 | 中铁二院工程集团有限责任公司 | A kind of construction method of anti-arch deformation caisson |
| CN109629455A (en) * | 2019-02-27 | 2019-04-16 | 中交路桥北方工程有限公司 | The construction method of highway reconstruction bridge |
| CN112281897A (en) * | 2020-10-19 | 2021-01-29 | 中铁六局集团有限公司 | Construction method of bridge pile foundation |
| CN113502747A (en) * | 2021-07-09 | 2021-10-15 | 杭州市城市建设基础工程有限公司 | Water quantity change mountainous area bridge construction method |
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| CN101782355A (en) * | 2010-03-26 | 2010-07-21 | 中冶实久建设有限公司 | Method for blasting big boulder in artificially dug pile |
| CN105507340A (en) * | 2015-12-10 | 2016-04-20 | 南阳理工学院 | Construction method of bridge pile foundation in mountainous area |
| CN106368231A (en) * | 2016-10-08 | 2017-02-01 | 张献斌 | Construction method of road bridge pile foundation of mountain steep slope region |
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| JP3165450B2 (en) * | 1997-05-12 | 2001-05-14 | 東京電力株式会社 | Arrangement method of reinforcement and foundation body in foundation formation of ground reinforcement type |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107476319A (en) * | 2017-09-04 | 2017-12-15 | 崔宇鹏 | Mountain area steep slope region Road Bridge Pile Foundation construction method |
| CN108193671A (en) * | 2017-12-15 | 2018-06-22 | 中铁上海工程局集团有限公司 | For the weight dangerous region super-large diameter pile foundation drilling construction method of alpine terrain landforms |
| CN108221966A (en) * | 2018-02-02 | 2018-06-29 | 中国十九冶集团有限公司 | Construction method of mountain deep pile foundation combining manual hole digging and impact hole forming |
| CN108867629A (en) * | 2018-06-05 | 2018-11-23 | 中铁二院工程集团有限责任公司 | A kind of construction method of anti-arch deformation caisson |
| CN109629455A (en) * | 2019-02-27 | 2019-04-16 | 中交路桥北方工程有限公司 | The construction method of highway reconstruction bridge |
| CN112281897A (en) * | 2020-10-19 | 2021-01-29 | 中铁六局集团有限公司 | Construction method of bridge pile foundation |
| CN113502747A (en) * | 2021-07-09 | 2021-10-15 | 杭州市城市建设基础工程有限公司 | Water quantity change mountainous area bridge construction method |
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Inventor after: Wang Qi Inventor after: Huo Xin Inventor after: Li Qiang Inventor after: Shang Yongsheng Inventor after: Zheng Shuangqin Inventor before: Wang Qi Inventor before: Huo Xin Inventor before: Li Qiang |
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