CN108330817A - It is a kind of to hold the Abutment Reinforcement structure and its construction method for tilting a miniature clump of piles using end - Google Patents

It is a kind of to hold the Abutment Reinforcement structure and its construction method for tilting a miniature clump of piles using end Download PDF

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Publication number
CN108330817A
CN108330817A CN201810218003.0A CN201810218003A CN108330817A CN 108330817 A CN108330817 A CN 108330817A CN 201810218003 A CN201810218003 A CN 201810218003A CN 108330817 A CN108330817 A CN 108330817A
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CN
China
Prior art keywords
abutment
steel pipe
piles
tilting
reinforcement structure
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Pending
Application number
CN201810218003.0A
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Chinese (zh)
Inventor
上官兵
周欣荣
袁卫国
曲研
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Guangdong Metallurgical and Architectural Design Institute
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Guangdong Metallurgical and Architectural Design Institute
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Priority to CN201810218003.0A priority Critical patent/CN108330817A/en
Publication of CN108330817A publication Critical patent/CN108330817A/en
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00Structural or constructional details of bridges
    • E01D19/02Piers; Abutments ; Protecting same against drifting ice
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00Foundations as substructures
    • E02D27/10Deep foundations
    • E02D27/12Pile foundations
    • E02D27/14Pile framings, i.e. piles assembled to form the substructure

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  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • General Engineering & Computer Science (AREA)
  • Piles And Underground Anchors (AREA)

Abstract

The invention discloses a kind of held using end to tilt the Abutment Reinforcement structure and its construction method of a miniature clump of piles, one abutment additional body structure is constituted using a miniature clump of piles, cushion cap and supporting beam, the support of horizontal direction is provided for former abutment so that the anti-ability of pushing away of abutment has obtained huge promotion.The present invention's is simple for structure effective, and difficulty of construction is low, and construction cost is low, has clear meaning to the reinforcing of abutment, has larger promotional value, the invention is used for field of bridge construction.

Description

It is a kind of to hold the Abutment Reinforcement structure and its construction method for tilting a miniature clump of piles using end
Technical field
The present invention relates to field of bridge construction, the Abutment Reinforcement knot of a miniature clump of piles is tilted more particularly to a kind of held using end Structure and its construction method.
Background technology
With the fast development of highway, railway and civilian infrastructure, the quantity and scale of science of bridge building are all quickly increasing Long, there is disease to some extent because of various reasons in a portion servicing bridges.In the various Common Diseases of bridge, abutment The ratio for disease occur significantly larger than is both the bridge pier of substructure, this is related with the mechanical characteristic of abutment.
Abutment is located at the junction of embankment and bridge, and abutment is other than the vertical load for bearing bridge superstructure, also Want the soil pressure that embankment generates after pedestal.Especially high embankment pile foundation abutment (including pillar abutment, ribbed slab abutment, wall Formula abutment etc.), banketing after one side platform, high, soil pressure is big, and another aspect pile foundation is mostly vertical drilling hole stake, and vertical bearing capacity is big But anti-horizontal thrust is indifferent, and past people pay little attention to this problem, causes such wind passage effects not within minority.Specifically Show that surrender of cracking near abutment body or stake top section, Abutment stiffness decline, abutment horizontal displacement is transfinited, or even is influenced entire The safety of abutment.
At present be directed to high embankment pile foundation abutment because resist push away scarce capacity cause the reinforcement measure of disease it is usual there are two types of, one It is newly-increased stake number, second is that newly-increased anchor pole.The Scheme of Strengthening of traditional newly-increased stake number is most of increased to be and similar perpendicular of former stake Straight drilled pile, and implement new cushion cap and be connected with cushion cap to be reinforced.Although new pile can share the load of former stake, Vertical Pile is increased newly Integrally resist to improving abutment and pushes away the effect of ability but unobvious.In addition prefabricated pile or cast-in-place drilled pile are either squeezed into, is constructed The difficulty of new pile is all larger.It is influenced to be difficult to carry out by head room deficiency before platform, such as wants staking that big scale of construction foundation pit will occur after platform It excavates, seriously affects the normal operation of original road.The Scheme of Strengthening of newly-increased anchor pole is the drilling construction anchor pole before platform, and anchor pole is worn The soil body is until rock stratum or reliable soil layer, consolidation grouting post-stretching utilize the active withdrawal resistance of prestressed anchor after crossing abutment body and platform Carry out a kind of method of balancing earth pressure power.The main problem of this scheme has armored concrete abutment body reinforcing bar intensive, and drilling construction is difficult Degree is big;If in addition anchor pole is unable to anchor in rock stratum, the single withdrawal resistance of anchor pole is low, and anchor pole quantity is more, and drilling construction anchor pole will be right Original abutment body structure is caused compared with havoc.
Therefore, it in order to enrich Abutment Reinforcement method, preferably solves high embankment pile foundation abutment and pushes away scarce capacity because anti-and draw The disease risen, it would be highly desirable to invent it is a kind of can effectively improve abutment it is anti-push away ability, on the normal operation of original bridge influence it is smaller and The low Abutment Reinforcement method of difficulty of construction.
Invention content
It anti-push away a kind of held using end that ability is strong, difficulty of construction is low the purpose of the present invention is to provide a kind of and tilts miniature group The Abutment Reinforcement structure and its construction method of stake.
The technical solution used in the present invention is:
It is a kind of to hold the Abutment Reinforcement structure for tilting a miniature clump of piles using end, include the support being connected with abutment to be reinforced The other end of beam, supporting beam is equipped with cushion cap, and the lower section of cushion cap connects several mini piles, and each mini pile is towards abutment side to be reinforced To being obliquely installed.
It is further used as the improvement of technical solution of the present invention, mini pile includes steel pipe, and reinforcing bar is equipped in steel pipe, is gone back in steel pipe Filled with the concrete that reinforcing bar and steel pipe are fixed together.
It is further used as the improvement of technical solution of the present invention, the outer wall of steel pipe is equipped with several pipelines for mud jacking, pipe The one end in road is flushed with the end of steel pipe.
It is further used as the improvement of technical solution of the present invention, supporting beam is equipped with the company for being connected with abutment to be reinforced Connect reinforcing bar.
It is further used as the improvement of technical solution of the present invention, the construction steel of enhancing connection is equipped at the top of each mini pile Muscle.
The present invention also provides a kind of construction method for holding the Abutment Reinforcement structure for tilting a miniature clump of piles using end, including it is following Step:
1) construction site is selected before abutment to be reinforced, the stake position required according to Design of Reinforcement drills, drilled hole For inclined hole;
2) one end of steel pipe is placed in inclined hole, a reinforcing bar is then placed in steel pipe, and inject concrete into steel pipe Concrete to steel pipe nozzle no longer sinks;
3) gap between steel pipe and inclined hole carries out mud jacking to inclined hole aperture grout;
4) cushion cap and supporting beam are set in steel pipe upper end, and supporting beam is connect with abutment to be reinforced.
It is further used as the improvement of technical solution of the present invention, in step 1), angle formed by the center line of inclined hole and ground More than 70 °.
It is further used as the improvement of technical solution of the present invention, in step 1), inclined hole gos deep into the micro- weathered layer of basement rock to inclined hole Vertical depth is more than the diameter of steel tube of three times.
It is further used as the improvement of technical solution of the present invention, in step 2), the outer wall of steel pipe, which is preset with, several is used for mud jacking Pipeline, one end that one end and the steel pipe of pipeline stretch into inclined hole flushes.
It is further used as the improvement of technical solution of the present invention, in step 2), while concrete is injected into steel pipe, constantly Ground shakes reinforcing bar with vibrated concrete.
Beneficial effects of the present invention:This holds the Abutment Reinforcement structure and its construction method for tilting a miniature clump of piles using end, by The pile group structure that several mini piles are constituted inherently has larger bearing capacity, and mini pile has certain angle of inclination, because This is capable of providing the active force of horizontal direction, substantially increases the anti-ability of pushing away of abutment, and the diameter of each mini pile is smaller, construction When it is small to the destruction of original bridge structure and basis, and the construction of common drilling tools can be used, greatly reduces to construction site With the requirement in space, difficulty of construction is reduced.
Description of the drawings
The invention will be further described below in conjunction with the accompanying drawings:
Fig. 1 is the overall structure diagram of the embodiment of the present invention;
Fig. 2 is the vertical view of the embodiment of the present invention;
Fig. 3 is the structural schematic diagram of the mini pile of the embodiment of the present invention;
Fig. 4 is the structural schematic diagram of mini pile of the embodiment of the present invention and cushion cap junction.
Specific implementation mode
Referring to Fig.1~Fig. 4, the present invention be it is a kind of hold the Abutment Reinforcement structure for tilting a miniature clump of piles using end, including with wait for The other end of the connected supporting beam 3 of the abutment of reinforcing, supporting beam 3 is equipped with cushion cap 2, and the lower section of cushion cap 2 connects several mini piles 1, Each mini pile 1 is obliquely installed towards abutment direction to be reinforced.
Specifically, mini pile 1 is arranged in the side of the separate embankment of abutment to be reinforced, each of miniature clump of piles structure Single pile is to be in tilted layout.After the inclination arrangement of single mini pile 1, single mini pile 1 provides the horizontal component of counter-force, can be direct Soil pressure after resistance abutment.The inclination arrangement of single mini pile 1 substantially increases abutment thrust stiffness, fundamentally solves height Pile foundation of banketing formula abutment disease problem caused by thrust stiffness deficiency.
As the preferred embodiment of the present invention, mini pile 1 includes steel pipe 11, and reinforcing bar 12, steel pipe 11 are equipped in steel pipe 11 In be also filled with the concrete 13 that reinforcing bar 12 and steel pipe 11 are fixed together.Concrete 13 for filling is mixed for " melon rice sand " Solidifying soil, this concrete 13 by " the melon rice sand " of diameter about 5mm, thin river sand, 525# cement, press 1:1:3 weight ratio add water and Appropriate additive mix forms.It fill concrete 13 and reinforcing bar 12 is set constitutes mini pile 1 in steel pipe 11, this mini pile 1 Because " cuff " effect pile body axial carrying capacity of steel pipe 11 is high.
As the preferred embodiment of the present invention, the outer wall of steel pipe 11 is equipped with several pipelines 14 for mud jacking, pipeline 14 one end is flushed with the end of steel pipe 11.For single mini pile 1 is fixed in construction hole, it is necessary to carry out mud jacking to it.It is logical Piping 14 carries out mud jacking to stake side, will also increase the constraint of Pile side soil body, and improve the resistance to compression stability of mini pile 1.
As the preferred embodiment of the present invention, supporting beam 3 is equipped with the connection steel for being connected with abutment to be reinforced Muscle 4, when construction, the technique that implantation and welded reinforcement can be used links together supporting beam 3 and abutment to be reinforced, and effectively carries High abutment thrust stiffness reduces abutment horizontal displacement.
As the preferred embodiment of the present invention, the top of each mini pile 1 is equipped with the distributing bar 5 of enhancing connection.This It is more secured that distributing bar 5 enables each mini pile 1 and cushion cap 2 to connect, and avoids a miniature clump of piles and 2 junction of cushion cap due to abutment Thrust and destroy.
The present invention also provides a kind of construction method for holding the Abutment Reinforcement structure for tilting a miniature clump of piles using end, including it is following Step:
5) construction site is selected before abutment to be reinforced, the stake position required according to Design of Reinforcement drills, drilled hole For inclined hole, inclined hole is the installation site of mini pile 1, and inclined hole can be used common drilling tools construction, greatly reduce to field of constructing The requirement on ground and space, reduces difficulty of construction;
6) one end of steel pipe 11 is placed in inclined hole, a reinforcing bar 12 is then placed in steel pipe 11, and note into steel pipe 11 The concrete 13 for entering concrete 13 to 11 nozzle of steel pipe no longer sinks, until the solidification of concrete 13 can be obtained firm mini pile 1;
7) gap between steel pipe 11 and inclined hole carries out mud jacking to inclined hole aperture grout, can securely fix mini pile 1 In inclined hole, stake side pressure grouting will also increase the constraint of Pile side soil body, and improve the resistance to compression stability of mini pile 1;
8) cushion cap 2 and supporting beam 3 are set in 11 upper end of steel pipe, and supporting beam 3 is connect with abutment to be reinforced.At this point, Supporting beam 3, cushion cap 2 and a miniature clump of piles constitute a skewed horizontal load structure, and the support force of horizontal direction is provided for original abutment.
As the preferred embodiment of the present invention, in step 1), angle is more than formed by the center line of inclined hole and ground 70 °, at this point, the construction technology of inclined hole is relatively simple, common drilling equipment for drilling can be used and construct, difficulty of construction is low.
As the preferred embodiment of the present invention, in step 1), inclined hole gos deep into the micro- weathered layer of basement rock to the vertical depth of inclined hole For degree more than 11 diameter of steel pipe of three times, the micro- weathered layer of basement rock belongs to one layer harder in ground, and the depth of inclined hole has ensured miniature The holding power of 1 bottom of stake, prevents 1 bottom of mini pile from skidding.
As the preferred embodiment of the present invention, in step 2), the outer wall of steel pipe 11 is preset with several pipes for mud jacking Road 14, one end that one end of pipeline 14 stretches into inclined hole with steel pipe 11 flush so that and the perfusion of cement mortar is more accurate when mud jacking, and Gap between inclined hole and steel pipe 11 can be completely filled out, ensure the stability of mini pile 1, ensured construction quality.
As the preferred embodiment of the present invention, in step 2), while concrete 13 are injected into steel pipe 11, constantly Reinforcing bar 12 is shaken with vibrated concrete 13, vibrator traction reinforcing bar 12 can be used in process of vibrating, improves the efficiency vibrated.
The present invention constitutes an abutment additional body structure using a miniature clump of piles, cushion cap 2 and supporting beam 3, for former abutment There is provided the support of horizontal direction so that the anti-ability of pushing away of abutment has obtained huge promotion.The present invention's is simple for structure effective, and Difficulty of construction is low, and construction cost is low, has clear meaning to the reinforcing of abutment, has larger promotional value.
Certainly, the invention is not limited to the above embodiment, and those skilled in the art are without prejudice to originally Equivalent variations or replacement can be also made under the premise of spirit, these equivalent modifications or replacement are all contained in the application right It is required that in limited range.

Claims (10)

1. a kind of holding the Abutment Reinforcement structure for tilting a miniature clump of piles using end, it is characterised in that:Include and abutment phase to be reinforced The other end of supporting beam (3) even, the supporting beam (3) is equipped with cushion cap (2), and the lower section connection of the cushion cap (2) is several miniature Stake (1), each mini pile (1) are obliquely installed towards abutment direction to be reinforced.
2. according to claim 1 hold the Abutment Reinforcement structure for tilting a miniature clump of piles using end, it is characterised in that:It is described micro- Type stake (1) includes steel pipe (11), and reinforcing bar (12) is equipped in the steel pipe (11), is also filled with the steel in the steel pipe (11) The concrete (13) that muscle (12) and steel pipe (11) are fixed together.
3. according to claim 2 hold the Abutment Reinforcement structure for tilting a miniature clump of piles using end, it is characterised in that:The steel The outer wall for managing (11) is equipped with several pipelines (14) for mud jacking, the end of one end and the steel pipe (11) of the pipeline (14) End flushes.
4. according to claim 1 hold the Abutment Reinforcement structure for tilting a miniature clump of piles using end, it is characterised in that:The branch Beam (3) is supportted equipped with the connection reinforcing bar (4) for being connected with abutment to be reinforced.
5. according to claim 1 hold the Abutment Reinforcement structure for tilting a miniature clump of piles using end, it is characterised in that:It is each described The distributing bar (5) of enhancing connection is equipped at the top of mini pile (1).
6. a kind of construction method for holding the Abutment Reinforcement structure for tilting a miniature clump of piles using end, which is characterized in that including following step Suddenly:
1) construction site is selected before abutment to be reinforced, the stake position required according to Design of Reinforcement drills, and drilled hole is oblique Hole;
2) one end of steel pipe (11) is placed in the inclined hole, then one reinforcing bar of merging (12) in the steel pipe (11), and past The concrete (13) of injection concrete (13) to the steel pipe (11) nozzle no longer sinks in the steel pipe (11);
3) gap to the steel pipe (11) between inclined hole carries out mud jacking to inclined hole aperture grout;
4) in the steel pipe (11) upper end setting cushion cap (2) and supporting beam (3), and by the supporting beam (3) and bridge to be reinforced Platform connects.
7. the construction method according to claim 6 for holding the Abutment Reinforcement structure for tilting a miniature clump of piles using end, feature It is:In step 1), angle formed by the center line of the inclined hole and ground is more than 70 °.
8. the construction method according to claim 6 for holding the Abutment Reinforcement structure for tilting a miniature clump of piles using end, feature It is:In step 1), the inclined hole gos deep into steel pipe (11) diameter that the micro- weathered layer of basement rock is more than three times to the vertical depth of inclined hole.
9. the construction method according to claim 6 for holding the Abutment Reinforcement structure for tilting a miniature clump of piles using end, feature It is:In step 2), the outer wall of the steel pipe (11) is preset with several pipelines (14) for mud jacking, and the one of the pipeline (14) One end that the inclined hole is stretched at end with steel pipe (11) flushes.
10. the construction method according to claim 6 for holding the Abutment Reinforcement structure for tilting a miniature clump of piles using end, feature It is:In step 2), into the steel pipe (11) while injection concrete (13), the reinforcing bar (12) is constantly shaken to shake Smash the concrete (13).
CN201810218003.0A 2018-03-16 2018-03-16 It is a kind of to hold the Abutment Reinforcement structure and its construction method for tilting a miniature clump of piles using end Pending CN108330817A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112030721A (en) * 2020-09-02 2020-12-04 刘�英 Bridge head roadbed reinforcing structure

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101545265A (en) * 2009-04-27 2009-09-30 桂林工学院 A method for rigid sloped pipe group resistance to horizontal gliding
CN204753615U (en) * 2015-06-26 2015-11-11 山东省交通规划设计院 Bridge pile foundation reinforced structure
CN205295920U (en) * 2015-12-15 2016-06-08 浙江理工大学 An area supporting beam's thin wall abutment structure
CN205369231U (en) * 2016-01-29 2016-07-06 中国科学院武汉岩土力学研究所 Steel -pipe pile is filled in drilling
CN105839659A (en) * 2016-04-14 2016-08-10 中国地质科学院探矿工艺研究所 Debris flow retaining dam base reinforcing method based on composite micro-piles
CN206635748U (en) * 2017-02-28 2017-11-14 中国建筑第二工程局有限公司 Inner concrete vibrator
CN208167505U (en) * 2018-03-16 2018-11-30 广东省冶金建筑设计研究院 It is a kind of to hold the Abutment Reinforcement structure for tilting a miniature clump of piles using end

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101545265A (en) * 2009-04-27 2009-09-30 桂林工学院 A method for rigid sloped pipe group resistance to horizontal gliding
CN204753615U (en) * 2015-06-26 2015-11-11 山东省交通规划设计院 Bridge pile foundation reinforced structure
CN205295920U (en) * 2015-12-15 2016-06-08 浙江理工大学 An area supporting beam's thin wall abutment structure
CN205369231U (en) * 2016-01-29 2016-07-06 中国科学院武汉岩土力学研究所 Steel -pipe pile is filled in drilling
CN105839659A (en) * 2016-04-14 2016-08-10 中国地质科学院探矿工艺研究所 Debris flow retaining dam base reinforcing method based on composite micro-piles
CN206635748U (en) * 2017-02-28 2017-11-14 中国建筑第二工程局有限公司 Inner concrete vibrator
CN208167505U (en) * 2018-03-16 2018-11-30 广东省冶金建筑设计研究院 It is a kind of to hold the Abutment Reinforcement structure for tilting a miniature clump of piles using end

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112030721A (en) * 2020-09-02 2020-12-04 刘�英 Bridge head roadbed reinforcing structure

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