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 PDF

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Publication number
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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construction
pile foundation
concrete
steep slope
mountain area
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CN201710148256.0A
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王岐
霍鑫
李强
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王岐
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Priority to CN201710148256.0A priority Critical patent/CN106812150A/en
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00Foundations as substructures
    • E02D27/10Deep foundations
    • E02D27/12Pile foundations
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22Piles
    • E02D5/34Concrete or concrete-like piles cast in position ; Apparatus for making same
    • E02D5/36Concrete or concrete-like piles cast in position ; Apparatus for making same making without use of mouldpipes or other moulds

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

A kind of mountain area steep slope region Road Bridge Pile Foundation construction method
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。
CN201710148256.0A 2017-03-14 2017-03-14 A kind of mountain area steep slope region Road Bridge Pile Foundation construction method Pending CN106812150A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
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 The mountain area deep pile foundation construction method that manually digging hole is combined with impact holing
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

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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

Cited By (5)

* Cited by examiner, † Cited by third party
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 The mountain area deep pile foundation construction method that manually digging hole is combined with impact holing
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

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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

Inventor after: Wang Qi

Inventor after: Huo Xin

Inventor after: Li Qiang

Inventor after: Shang Yongsheng

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Application publication date: 20170609