CN109680706A - A kind of assembled cushion cap pier stake prototype and the cementation of fissures construction technology using it - Google Patents
A kind of assembled cushion cap pier stake prototype and the cementation of fissures construction technology using it Download PDFInfo
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- CN109680706A CN109680706A CN201811509115.8A CN201811509115A CN109680706A CN 109680706 A CN109680706 A CN 109680706A CN 201811509115 A CN201811509115 A CN 201811509115A CN 109680706 A CN109680706 A CN 109680706A
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- cushion cap
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- external mold
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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
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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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
- E02D27/14—Pile framings, i.e. piles assembled to form the substructure
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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Abstract
The invention discloses a kind of assembled cushion cap pier stake prototype and use its cementation of fissures construction technology, it is related to the objective demand of prefabrication and assembly construction construction bridges connection seam pouring construction, the boundary condition of gap-grouting material when analog cast in situs of the present invention, belong to Application in Building technical field, the present invention is easy to make, detail structure simulates the boundary condition of gap-grouting material, template slit width adjusting range meets design drawing requirement, gap-grouting material usage amount is less, both the determination to mixing plant parameter had been met, it can test again to the construction technology of gap-grouting material, pass through intensity detection after cutting after demoulding to the observation of the appearance of a sample and material, it can intuitively accurate interpretation to the performance of gap-grouting material, welding steel bar in external mold four sides imitates interface corrugated surface in the present invention；Internal model one side welding its excess-three face of steel bar is that smooth surface imitates interface corrugated surface, can effectively improve density when carrying out the seam perfusion of cushion cap pier staking, have broad application prospects.
Description
Technical field
The present invention relates to the objective demand of prefabrication and assembly construction construction bridges connection seam pouring construction, analog scene of the present invention
The boundary condition of gap-grouting material when pouring belongs to Application in Building technical field, specifically a kind of assembled cushion cap pier stake full size mould
Type and the cementation of fissures construction technology for using it.
Background technique
In China, the prefabricated building technology of bridge superstructure comparative maturity, and built in a large amount of bridge
If middle use, and substructure is the key that current prefabricated assembled bridge, particularly with Beijing Gao Zhenqu, the company of substructure
Connecing form, mechanical property and resistance to shock is the most key link, carries out prefabricated assembled connecting sewing ultra-high performance concrete
The key technologies experimental study such as cementation of fissures construction technology, for bridge construction Project design and site construction technology provide basis and according to
According to.
Whether self-compacting concrete can reach the requirement of dense packing effect template under conditions of relying solely on itself gravity, it
Workability plays a crucial role, and excellent workability is itself and the most fundamental difference of normal concrete.At present from close
Real concrete self-characteristic and prefabrication and assembly construction construction bridges connection seam special structure form still have following technological difficulties: 1. connecting
It is limited to connect joint gap, pouring construction technique needs to study；2. joint grouting there may be and undetectable perfusion leakiness
Problem avoids hidden danger of quality.
For this purpose, it is proposed that a kind of assembled cushion cap pier stake prototype and the cementation of fissures construction technology using it, external mold four
It welds steel bar and imitates interface corrugated surface in face；Internal model one side welding its excess-three face of steel bar is that smooth surface imitates interface corrugated surface, to solve
Interface ripple wheat flour makees the high technical problem of difficulty.
Summary of the invention
The purpose of the present invention is to provide a kind of assembled cushion cap pier stake prototype and using its cementation of fissures construction technology,
To solve the problems mentioned in the above background technology.
To achieve the above object, the invention provides the following technical scheme:
A kind of assembled cushion cap pier stake prototype, including prefabricated pier stake and cushion cap, the prefabricated pier stake are mounted on cushion cap
On, the cushion cap is the supporting table or Extended chemotherapy of prefabricated pier stake；It further include reserving slot, concrete perfusion, alligator and template,
The reserved slot is arranged on cushion cap, and the prefabricated pier stake is connected in reserved slot by concrete perfusion perfusion, described
Template includes external mold and internal model, and internal model is arranged inside external mold, and the alligator is arranged between external mold and internal model, outside the external mold
Interface corrugated surface is imitated at side four sides, the interface corrugated surface be in assembled architecture seam when pouring cushion cap and prefabricated pier stake connect
Contacting surface is: improving the density poured using the benefit of corrugated surface.
As a further solution of the present invention: the external mold and internal model be it is rectangular, the material of external mold and internal model is steel
Saw lumber matter, the outside four sides of external mold and the inside of internal model are provided with steel bar on one side, and other three faces in the inside of internal model are smooth surface, institute
Steel bar is stated to be welded on external mold and internal model；The effect of steel bar is: modeling interface corrugated surface detail structure.
As a further solution of the present invention: the parameter of the external mold are as follows: side length 2150mm, high 2400mm；The internal model
Parameter are as follows: side length 2000mm, high 2400mm；The parameter of the steel bar are as follows: wide 50mm, thick 7mm, steel bar is on external mold and internal model
Center spacing is 100m, is provided with chamfering on steel bar；It is welded on the external mold and welds the one of steel bar on the four sides and internal model of steel bar
Do alligator in face.
A kind of cementation of fissures construction technology using assembled cushion cap pier stake prototype described above, includes the following steps:
1) stirring instrument selection: moveable forced formula upright shaft stirring machine is used；
2) raw material stirs: the cementing material of concrete perfusion being put the moveable forced formula vertical shaft selected into step 1) and is stirred
It mixes in machine, cementitious matter is first stirred into flow regime, add steel fibre and stirring is allowed to be evenly distributed；Concrete perfusion stirring
It uniformly and is in flow regime；
3) cementation of fissures is constructed: perfusion gap is perfused according to minimum crack pouring width 8cm and carries out the cementation of fissures；Complete to assembled cushion cap and
The cementation of fissures of prefabricated pier stake is constructed；
4) demoulding: form removal examines the closely knit situation of concrete perfusion by range estimation means and indoor detection test
It surveys.
As a further solution of the present invention: the stirring of the moveable forced formula upright shaft stirring machine used in the step 1)
Parameter are as follows: 0.3~0.6m of stirred volume3, vibration frequency 5.5kw.
As a further solution of the present invention: being by the mixing time that cementitious matter stirs into flow regime in the step 2)
2min；It is 4min that steel fibre, which is added, and stirs the mixing time for being allowed to be evenly distributed.
As a further solution of the present invention: taking single-point slip-stream slot to pour mode when the cementation of fissures is constructed in the step 3) and apply
Work is poured onto slip-stream groove top portion using suspension bucket, takes chute and blanking funnel to merge the cementation of fissures form of construction work of construction, forbids toppling over
Formula operation mode.
As a further solution of the present invention: the rate of flooding when cementation of fissures is constructed in the step 3) are as follows: 0.05m3/min-
0.1m3/min；It is slowly poured in shear connector groove location, pours 0~30cm range at the top of face in seam, filled using hand fit
Note smoothes out, and carrying out surface floating to concrete perfusion with miniature vibrating spear keeps gap-grouting material filling groove closely knit, avoids air
Be wrapped in groove, be conducive to concrete perfusion it is closely knit and flowing.
As a further solution of the present invention: the casting direction control when cementation of fissures is constructed in the step 3) is that every linear meter(lin.m.) is high
Difference is not more than 40mm；Time control is poured before Ying Hou biscuit pours, to be perfused by several times, in next time when agitator disk number is more
Before pouring, " plucking " processing preferably is carried out to the previous face that pours, avoids the faying face crack for generating two biscuits.
As a further solution of the present invention: in the step 3) cementation of fissures construct when the Vibratory Mixing time control be 1h with
It is interior, avoid material segregation.
Compared with prior art, the beneficial effects of the present invention are:
The present invention is easy to make, and detail structure simulates the boundary condition of gap-grouting material, template slit width adjusting range
Meet design drawing requirement, gap-grouting material usage amount is less, has not only met the determination to mixing plant parameter, but also can be to gap-grouting material
Construction technology test, by after demoulding to the observation of the appearance of a sample and material cutting after intensity detection, to cementation of fissures material
The performance of material can intuitively accurate interpretation.
Welding steel bar in external mold four sides imitates interface corrugated surface in the present invention；Internal model one side welding its excess-three face of steel bar is smooth surface
Interface corrugated surface is imitated, density can be effectively improved when carrying out the seam perfusion of cushion cap pier staking；The present invention can be convenient, fast
Slit width is adjusted, grouting material concrete castability slit width is determined, determines concrete castability slit width parameter, appearance is carried out to model and laboratory test is tested
Demonstrate,prove material compaction rate；The present invention can reduce difficulty of construction, accelerate packaged type bridges construction speed；Overcome sleeve reinforcing bar company
Connect, the bellows that is in the milk connects limitation still to be tested, reduces cast-in-place workload, improve assembly rate, accelerate construction progress；Reduction is applied
The difficulty positioned during work；The present invention can improve the stress performance of Precast Pier Columns and basic junction, reinforce connection；Reduction is held
The thickness of platform, has broad application prospects.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of assembled cushion cap pier stake prototype in the present invention.
Fig. 2 is the structural schematic diagram of the interface corrugated surface of assembled cushion cap pier stake prototype in the present invention.
Fig. 3 is the overlooking structure diagram of the external mold of assembled cushion cap pier stake prototype in the present invention.
Fig. 4 is the positive structure diagram of the external mold of assembled cushion cap pier stake prototype in the present invention.
Fig. 5 is the left view structural representation of the external mold of assembled cushion cap pier stake prototype in the present invention.
Fig. 6 is the overlooking structure diagram of the internal model of assembled cushion cap pier stake prototype in the present invention.
Fig. 7 is the positive structure diagram of the internal model of assembled cushion cap pier stake prototype in the present invention.
Fig. 8 is the left view structural representation of the internal model of assembled cushion cap pier stake prototype in the present invention.
In figure: the prefabricated pier stake of 1-, 2- reserve slot, 3- alligator, 4- concrete perfusion, 5- cushion cap, the interface 6- corrugated surface, 7-
External mold, 8- steel bar, 9- internal model.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment one
Please refer to Fig. 1~8, in the embodiment of the present invention, a kind of assembled cushion cap pier stake prototype, including prefabricated pier stake 1
With cushion cap 5, the prefabricated pier stake 1 is mounted on cushion cap 5, and the cushion cap 5 is the supporting table or Extended chemotherapy of prefabricated pier stake 1；Also
Including reserved slot 2, concrete perfusion 4, alligator 3 and template, the reserved slot 2 is arranged on cushion cap 5, the prefabricated pier stake
1 is connected in reserved slot 2 by the perfusion of concrete perfusion 4, and the template includes external mold 7 and internal model 9, and internal model 9 is arranged outside
Inside mould 7, the alligator 3 is arranged between external mold 7 and internal model 9, and interface corrugated surface 6 is imitated at the 7 outside four sides of external mold, described
Interface corrugated surface 6 is the contact surface of cushion cap 5 and prefabricated pier stake 1 when seam pours in assembled architecture, using the benefit of corrugated surface
It is: improves the density poured.
In the embodiment of the present invention, the external mold 7 and internal model 9 be it is rectangular, the material of external mold 7 and internal model 9 is steel material
Matter, the outside four sides of external mold 7 and the inside of internal model 9 are provided with steel bar 8 on one side, and other three faces in the inside of internal model 9 are smooth surface, institute
Steel bar 8 is stated to be welded on external mold 7 and internal model 9；The effect of steel bar 8 is: 6 detail structure of modeling interface corrugated surface.
In the embodiment of the present invention, the parameter of the external mold 7 are as follows: side length 2150mm, high 2400mm；The parameter of the internal model 9
Are as follows: side length 2000mm, high 2400mm；The parameter of the steel bar 8 are as follows: wide 50mm, thick 7mm, steel bar 8 on external mold 7 and internal model 9 in
In the heart away from for 100m, chamfering is provided on steel bar 8；It is welded on the external mold 7 and welds steel bar 8 on the four sides and internal model 9 of steel bar 8
Alligator 3 is done on one side.
Embodiment two
In the embodiment of the present invention, a kind of cementation of fissures construction technology using assembled cushion cap pier stake prototype is provided, it is described
Assembled cushion cap pier stake prototype structure it is identical as described in embodiment one, the cementation of fissures construction technology includes as follows
Step:
1) stirring instrument selection: moveable forced formula upright shaft stirring machine is used；
2) raw material stirs: the cementing material of concrete perfusion 4 is put to the moveable forced formula vertical shaft selected into step 1)
In blender, cementitious matter is first stirred into flow regime, steel fibre is added and stirring is allowed to be evenly distributed；Concrete perfusion 4
It stirs evenly and is in flow regime；
3) cementation of fissures is constructed: perfusion gap is perfused according to minimum crack pouring width 8cm and carries out the cementation of fissures；It completes to assembled cushion cap 5
It constructs with the cementation of fissures of prefabricated pier stake 1；
4) demoulding: form removal examines the closely knit situation of concrete perfusion 4 by range estimation means and indoor detection test
It surveys.
In the embodiment of the present invention, the mixing parametric of the moveable forced formula upright shaft stirring machine used in the step 1) are as follows:
0.3~0.6m of stirred volume3, vibration frequency 5.5kw.
In the embodiment of the present invention, cementitious matter is stirred into the mixing time of flow regime for 2min in the step 2)；Add
Entering steel fibre and stirring the mixing time for being allowed to be evenly distributed is 4min.
It in the embodiment of the present invention, takes single-point slip-stream slot to pour mode when the cementation of fissures is constructed in the step 3) and constructs, use
Suspension bucket is poured onto slip-stream groove top portion, and chute and blanking funnel merge the cementation of fissures form of construction work of construction, forbid Dumpage type operation mode.
Rate of flooding in the embodiment of the present invention, when the cementation of fissures is constructed in the step 3) are as follows: 0.05m3/min-0.1m3/
min；It is slowly poured in shear connector groove location, pours 0~30cm range at the top of face in seam, using hand fit's perfusion, smoothed out,
Carrying out surface floating to concrete perfusion 4 with miniature vibrating spear keeps gap-grouting material filling groove closely knit, avoids for air being wrapped in
In groove, be conducive to concrete perfusion 4 it is closely knit and flowing.
In the embodiment of the present invention, the casting direction control when cementation of fissures is constructed in the step 3) is that every linear meter(lin.m.) height difference is not more than
40mm；Time control is poured before Ying Hou biscuit pours, to be perfused by several times, before next time pours, preferably when agitator disk number is more
" plucking " processing is carried out to the previous face that pours, avoids the faying face crack for generating two biscuits.
In the embodiment of the present invention, the control of Vibratory Mixing time is to avoid material within 1h when the cementation of fissures is constructed in the step 3)
Material isolation.
Welding steel bar in external mold four sides imitates interface corrugated surface in the present invention；Internal model one side welding its excess-three face of steel bar is smooth surface
Interface corrugated surface is imitated, density can be effectively improved when carrying out the seam perfusion of cushion cap pier staking；The present invention can be convenient, fast
Slit width is adjusted, grouting material concrete castability slit width is determined, determines concrete castability slit width parameter, appearance is carried out to model and laboratory test is tested
Demonstrate,prove material compaction rate；The present invention can reduce difficulty of construction, accelerate packaged type bridges construction speed；Overcome sleeve reinforcing bar company
Connect, the bellows that is in the milk connects limitation still to be tested, reduces cast-in-place workload, improve assembly rate, accelerate construction progress；Reduction is applied
The difficulty positioned during work；The present invention can improve the stress performance of Precast Pier Columns and basic junction, reinforce connection；Reduction is held
The thickness of platform, has broad application prospects.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (10)
1. a kind of assembled cushion cap pier stake prototype, including prefabricated pier stake (1) and cushion cap (5), prefabricated pier stake (1) installation
On cushion cap (5), the cushion cap (5) is the supporting table or Extended chemotherapy of prefabricated pier stake (1)；It is characterized in that, further including reserving
Slot (2), concrete perfusion (4), alligator (3) and template, the reserved slot (2) are arranged on cushion cap (5), the prefabricated pier
Stake (1) is connected in reserved slot (2) by concrete perfusion (4) perfusion, and the template includes external mold (7) and internal model (9), interior
Mould (9) setting is internal in external mold (7), and the alligator (3) is arranged between external mold (7) and internal model (9), on the outside of the external mold (7)
Interface corrugated surface (6) are imitated at four sides, the interface corrugated surface (6) be in assembled architecture seam when pouring cushion cap (5) with it is prefabricated
The contact surface of pier stake (1).
2. assembled cushion cap pier stake prototype according to claim 1, which is characterized in that the external mold (7) and internal model
(9) be it is rectangular, the material of external mold (7) and internal model (9) is steel material, the outside four sides of external mold (7) and internal model (9) it is interior
Side is provided with steel bar (8) on one side, other three faces in the inside of internal model (9) be smooth surface, the steel bar (8) be welded on external mold (7) and
In internal model (9).
3. assembled cushion cap pier stake prototype according to claim 2, which is characterized in that the parameter of the external mold (7)
Are as follows: side length 2150mm, high 2400mm；The parameter of the internal model (9) are as follows: side length 2000mm, high 2400mm；The steel bar (8)
Parameter are as follows: wide 50mm, thick 7mm, steel bar (8) center spacing on external mold (7) and internal model (9) is 100m, and steel bar is provided on (8)
Chamfering；It welds on the external mold (7) and welds steel bar (8) on the four sides and internal model (9) of steel bar (8) and do alligator (3) on one side.
4. a kind of cementation of fissures construction technology using any assembled cushion cap pier stake prototype of claim 1-3, special
Sign is, includes the following steps:
1) stirring instrument selection: moveable forced formula upright shaft stirring machine is used；
2) raw material stirs: the cementing material of concrete perfusion (4) being put the moveable forced formula vertical shaft selected into step 1) and is stirred
It mixes in machine, cementitious matter is first stirred into flow regime, add steel fibre and stirring is allowed to be evenly distributed；Concrete perfusion (4)
It stirs evenly and is in flow regime；
3) cementation of fissures is constructed: perfusion gap is perfused according to minimum crack pouring width 8cm and carries out the cementation of fissures；Complete to assembled cushion cap (5) and
The cementation of fissures of prefabricated pier stake (1) is constructed；
4) demoulding: form removal examines concrete perfusion (4) closely knit situation by range estimation means and indoor detection test
It surveys.
5. the cementation of fissures construction technology according to claim 4 using assembled cushion cap pier stake prototype, which is characterized in that
The mixing parametric of the moveable forced formula upright shaft stirring machine used in the step 1) are as follows: 0.3~0.6m of stirred volume3, vibration
Frequency 5.5kw.
6. the cementation of fissures construction technology according to claim 4 using assembled cushion cap pier stake prototype, which is characterized in that
Cementitious matter is stirred into the mixing time of flow regime for 2min in the step 2)；Steel fibre is added and stirs and is allowed to distribution
Even mixing time is 4min.
7. the cementation of fissures construction technology according to claim 4 using assembled cushion cap pier stake prototype, which is characterized in that
It takes single-point slip-stream slot to pour mode when the cementation of fissures is constructed in the step 3) to construct, be poured onto slip-stream groove top portion using suspension bucket, slip
Slot and blanking funnel merge the cementation of fissures form of construction work of construction.
8. the cementation of fissures construction technology according to claim 7 using assembled cushion cap pier stake prototype, which is characterized in that
The rate of flooding when cementation of fissures is constructed in the step 3) are as follows: 0.05m3/min-0.1m3/min；It is slowly poured in shear connector groove location
Note, pours 0~30cm range at the top of face in seam, using hand fit's perfusion, smoothes out, with miniature vibrating spear to concrete perfusion
(4) carrying out surface floating keeps gap-grouting material filling groove closely knit.
9. the cementation of fissures construction technology according to claim 8 using assembled cushion cap pier stake prototype, which is characterized in that
Casting direction control when the cementation of fissures is constructed in the step 3) is that every linear meter(lin.m.) height difference is not more than 40mm；Time control is poured to stir to work as
Mix disk number it is more when, before Ying Hou biscuit pours, by several times be perfused, before next time pours, preferably to it is previous pour face carry out " plucking "
Processing.
10. the cementation of fissures construction technology according to claim 9 using assembled cushion cap pier stake prototype, feature exist
In the control of Vibratory Mixing time is within 1h when the cementation of fissures is constructed in the step 3).
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| CN201811509115.8A CN109680706A (en) | 2018-12-11 | 2018-12-11 | A kind of assembled cushion cap pier stake prototype and the cementation of fissures construction technology using it |
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| CN110777834A (en) * | 2019-10-30 | 2020-02-11 | 融兴建设集团有限公司 | Connection structure of assembled building pile foundation and cushion cap |
| CN113123220A (en) * | 2020-01-10 | 2021-07-16 | 中国国家铁路集团有限公司 | Rapid connecting structure between prefabricated pier stud and base and construction method |
| US11293183B2 (en) * | 2017-06-02 | 2022-04-05 | China State Construction Engineering Corporation Limited | Precast column base joint and construction method therefor |
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