CN109397522A - A kind of universal precast beam pedestal being applicable in Soft Clay and its construction method - Google Patents
A kind of universal precast beam pedestal being applicable in Soft Clay and its construction method Download PDFInfo
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- CN109397522A CN109397522A CN201811459978.9A CN201811459978A CN109397522A CN 109397522 A CN109397522 A CN 109397522A CN 201811459978 A CN201811459978 A CN 201811459978A CN 109397522 A CN109397522 A CN 109397522A
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- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 title claims abstract description 201
- 238000010276 construction Methods 0.000 title claims abstract description 35
- 239000004927 clay Substances 0.000 title claims abstract description 18
- 230000000694 effects Effects 0.000 claims abstract description 83
- 230000006978 adaptation Effects 0.000 claims abstract description 11
- 238000009434 installation Methods 0.000 claims abstract description 11
- 230000003014 reinforcing effect Effects 0.000 claims description 27
- 229910000831 Steel Inorganic materials 0.000 claims description 20
- 239000010959 steel Substances 0.000 claims description 20
- 238000009826 distribution Methods 0.000 claims description 5
- 125000006850 spacer group Chemical group 0.000 claims description 5
- 238000004873 anchoring Methods 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 4
- 230000010412 perfusion Effects 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 239000002689 soil Substances 0.000 description 6
- 239000011435 rock Substances 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000009411 base construction Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/22—Moulds for making units for prefabricated buildings, i.e. units each comprising an important section of at least two limiting planes of a room or space, e.g. cells; Moulds for making prefabricated stair units
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Foundations (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a kind of universal precast beam pedestals for being applicable in Soft Clay, and precast beam pedestal includes: pipe pile foundation comprising pile body；The lower fixed stage seat being connected with pile body comprising multiple end stand seats and concordant with end stand seat master pedestal between adjacent end stand seat being spaced apart；Several first built-in fitting groups are embedded on lower fixed stage seat；Top movable pedestal comprising the identical T beam activity pedestal of longitudinal width and/or small box girder activity pedestal；T beam activity pedestal and/or small box girder activity pedestal adaptation are placed in the top movable pedestal installation region of the first built-in fitting group formation, are embedded with for being adapted to the second connected built-in fitting group with the first built-in fitting group.Top movable pedestal installation region on top movable pedestal of the present invention and lower fixed stage seat can place different type T beam activity pedestal and small box girder activity pedestal, the single precast pedestal of traditional role is changed into universal precast pedestal, can satisfy precast beam construction versatility requirement.
Description
Technical field
The present invention relates to science of bridge building fields, and in particular to a kind of universal precast beam pedestal for being applicable in Soft Clay and its
Construction method.
Background technique
With the rapid development of China's economic society, the infrastructure constructions such as highway communication are constantly reinforced, and highway bridge
It is played a crucial role in the construction of highway communication road network.The fabrication and erection of bridge can be saved the construction period, guarantee
Construction quality, therefore become in highway bridge Superstructure Construction with a kind of widely arrangement and method for construction, but the in general party
Case has the following problems:
1) southeastern coastal areas are China areas that are fairly developed economically, and highway bridge construction task abnormity is arduous, due to closing on
Seashore, the generally existing thicker muddy soft soil of this area's geology, soil moisture in layer is big, and porosity is high, and bearing capacity is poor, weak soil
Layer brings great difficulty to bridge prefabrication construction；
2) beam in the form of prefabricated small box girder and T beam named respectively by respective cross sectional shape two kinds, wherein small box girder
Baseplate width is generally all wider than T beam bottom plate thickness, and the beam of two kinds of section forms is widely used in Bridges in Our Country construction；
It is affected since route is designed by topography and geomorphology and across obstacle, whole route is almost impossible to use single across footpath
Or the bridge structure of single section form, therefore, it is necessary to prefabricated span of bridge type and cross-sectional shape are more, while all kinds of beams
The quantitative difference of type is larger；Wherein, often a seed type pedestal is suitable for prefabricated single span or section form in site operation
Beam causes to need to occupy part place when the beam of prefabricated negligible amounts, and prefabricated place after the completion is idle to cause to waste；Then issue
When measuring more beam prefabricated construction and being difficult to meet construction period, need to remove the beam pedestal of negligible amounts, and make novel pedestal,
Cause the increase of material and operating expenses.
Therefore, design a kind of precast beam pedestal, the environmental gap of soft soil layer can be overcome, can satisfy different spans and
The precast beam in section is constructed versatility requirement, while meeting project progress and to save engineering cost extremely urgent.
Summary of the invention
In view of the deficiencies in the prior art, the universal of Soft Clay is applicable in the purpose of the present invention is to provide a kind of
Precast beam pedestal and its construction method, the top movable pedestal in the present invention on top movable pedestal and lower fixed stage seat are installed
Region can place different types of T beam activity pedestal and small box girder activity pedestal, and the single precast pedestal of traditional role is changed
For universal precast pedestal, the precast beam construction versatility requirement in different spans and section can satisfy.
To achieve the above objectives, the technical solution that the present invention takes first is that:
A kind of universal precast beam pedestal being applicable in Soft Clay, the precast beam pedestal include:
Pipe pile foundation comprising pile body；
The lower fixed stage seat being connected with the pile body comprising multiple end stand seats being spaced apart and set on adjacent institute
State master pedestal concordant with the end stand seat between end stand seat；Several first built-in fittings are embedded on the lower fixed stage seat
Group；
Top movable pedestal comprising the identical T beam activity pedestal of longitudinal width and/or small box girder activity pedestal；The T
Beam activity pedestal and/or small box girder activity pedestal adaptation are placed in the top movable pedestal that the first built-in fitting group is formed
In installation region, it is embedded with for being adapted to the second connected built-in fitting group with the first built-in fitting group.
Based on the above technical solution, pile crown connection is additionally provided between the pile body and the lower fixed stage seat
Part；
The bottom of the lower fixed stage seat is flat to be equipped with bed course, and the pile crown connector runs through the bed course for the stake
Body is connected with the lower fixed stage seat；
The pile crown connector includes pile crown connection frame and for described in being cast in and being placed in the pile body inner cavity
Wadding weft variation in pile crown connection frame.
Based on the above technical solution, the pile crown connection frame includes:
Backing board is used to serve as the perfusion bed die below the bed course within the scope of 0.5~1.5m；
The connection reinforcing bar of several circle ring array distributions, weldering is connected on the backing board, and the connection reinforcing bar forms one
Virtual cylinder；Wherein, the connection reinforcing bar is located at the part on the bed course for anchoring into the lower fixed stage seat；
Tie hoop, is wound in the peripheral side of several connection reinforcing bars, and is fixed using spacer bar.
Based on the above technical solution, the connection reinforcing bar be located at the part outward bending 12 on the bed course~
18 ° of dog-ears.
Based on the above technical solution, the first built-in fitting group is adopted with being adapted between the second connected built-in fitting group
It is connected with the junction steel plate of triangular form.
Based on the above technical solution, the top movable pedestal further include:
Top angle is set on the rib of the T beam activity pedestal and/or the small box girder activity pedestal；The bound edge
Angle steel with stainless steel bed die for being connected；
Pre-buried tie rod hole is set in the T beam activity pedestal and/or the small box girder activity pedestal；And
Hanging ring on the T beam activity pedestal and/or the small box girder activity pedestal.
Based on the above technical solution, the bottom of the end stand seat is laterally disposed with two for undertaking beam section tensioning
The pipe pile foundation of load after arch camber；
The bottom longitudinal pitch of the master pedestal is disposed with more for uniformly sharing the tubular pole of load when beam section pours
Basis.
To achieve the above objectives, the technical solution that the present invention takes second is that:
A kind of the step of construction method according to above-mentioned precast beam pedestal, the construction method includes:
Demarcate the stake position of pipe pile foundation, and the pipe pile foundation of constructing；
End stand seat and master pedestal are poured in the pipe pile foundation, and form integral beam type structure；
Several first built-in fitting groups are embedded in advance on end stand seat and master pedestal；
It is living that the top movable pedestal for being embedded with the second built-in fitting group is placed in the top that the first built-in fitting group is formed
In dynamic pedestal installation region, and the second built-in fitting group that the first built-in fitting group is connected with adaptation connects；Wherein institute
Stating top movable pedestal includes the identical T beam activity pedestal of longitudinal width and/or small box girder activity pedestal, top movable pedestal peace
Filling the top movable pedestal that region is placed is at least one in the T beam activity pedestal and the small box girder activity pedestal
Kind.
Based on the above technical solution, the step of construction pipe pile foundation includes:
Pile body is squeezed into the stake position of calibration, prefabricated pile crown connection frame is put into pile body inner cavity described in the pile body；
Wadding weft variation is poured into the pile crown connection frame in the pile body inner cavity.
Based on the above technical solution, the second built-in fitting group the first built-in fitting group being connected with adaptation
It is weldingly connected using the junction steel plate of triangular form；
If replacing, the T beam activity pedestal is the small box girder activity pedestal or the replacement small box girder activity pedestal is
The T beam activity pedestal is replaced after then cutting the junction steel plate and is weldingly connected again using the junction steel plate of triangular form.
Compared with the prior art, the advantages of the present invention are as follows:
The present invention provides a kind of universal precast beam pedestal for being applicable in Soft Clay and its construction method, the present invention by
The mode that multiple end stand seats are arranged in lower fixed stage seat realizes the prefabricated function of a variety of different spans box beams, top movable pedestal with
Lower fixed stage seat is single by traditional role by that can place different types of T beam activity pedestal and small box girder activity pedestal
Precast pedestal be changed into universal precast pedestal, the precast beam construction versatility that can satisfy different spans and section is wanted
It asks；Lower fixed stage seat is effectively connected with pipe pile foundation, is passed upper load by the integral beam type structure of lower fixed stage seat
Pass pipe pile foundation, wherein pile body can be deep into strongly weathered sand-rock, and it is heavy in Soft Clay to effectively reduce precast pedestal
Drop, overcomes the environmental gap of soft soil layer.The characteristics of present invention has strong applicability, restructures convenient and quick construction, can expire simultaneously
Sufficient project progress and saving engineering cost.
Detailed description of the invention
Fig. 1 is the main view of totality of embodiment of the present invention facade arrangement states；
Fig. 2 is that the horizontal layout of pipe pile foundation of the embodiment of the present invention overlooks distribution map；
Fig. 3 is the top view of T of embodiment of the present invention beam activity pedestal horizontal layout state；
Fig. 4 is the top view of small box girder of embodiment of the present invention activity pedestal horizontal layout state；
Fig. 5 is pile crown of embodiment of the present invention connector main sectional view；
Fig. 6 is the B-B direction cross-sectional view of Fig. 5；
Fig. 7 is the left view of T of embodiment of the present invention beam activity pedestal；
Fig. 8 is the left view of small box girder of embodiment of the present invention activity pedestal；
Fig. 9 is the C-C of Fig. 8 to cross-sectional view；
The main view of Figure 10 junction steel plate of the embodiment of the present invention.
In figure: 1- pipe pile foundation, 11- pile crown connector, 111- backing board, 112- connection reinforcing bar, 113- tie hoop,
114- spacer bar, 115- wadding weft variation, 116- bed course, 12- pile body, 2- lower fixed stage seat, 21- master pedestal, 22- end stand
Seat, 3- top movable pedestal, 31-T beam activity pedestal, 32- small box girder activity pedestal, 33- top angle, 34- hanging ring, 35- are pre-
Bury tie rod hole, 41- the first built-in fitting group, 42- the second built-in fitting group, 43- junction steel plate.
Specific embodiment
Clear, complete description is carried out below with reference to technical solution of the attached drawing to embodiment each in the present invention, it is clear that institute
The embodiment of description is only a part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiment of the present invention,
Those of ordinary skill in the art's obtained all other embodiment without making creative work belongs to this
Invent protected range.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.It should be pointed out that all attached drawings are illustrative expression.For the ordinary skill of this field
For personnel, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
The present invention is described in further detail below through specific implementation examples and in conjunction with the accompanying drawings.
Embodiment
Referring to shown in Fig. 1~4, the embodiment of the present invention provides a kind of universal precast beam pedestal for being applicable in Soft Clay, institute
Stating precast beam pedestal includes pipe pile foundation 1, lower fixed stage seat 2, top movable pedestal 3；Pipe pile foundation 1 includes pile body 12, institute
Stating pile body 12 is finished product pile body, can be deep into strongly weathered sand-rock；The lower fixed stage seat 2 being connected with the pile body 12, packet
Include multiple end stand seats 22 being spaced apart and concordant with end stand seat master pedestal between the adjacent end stand seat 22
21；Several first built-in fitting groups 41 are embedded on the lower fixed stage seat 2；Top movable pedestal 3 includes that longitudinal width is identical
T beam activity pedestal 31 and/or small box girder activity pedestal 32；The T beam activity pedestal 31 and/or the small box girder activity pedestal
32 adaptations are placed in the top movable pedestal installation region that the first built-in fitting group 41 is formed, and are embedded with for described the
The second connected built-in fitting group 42 of one built-in fitting group 41 adaptation.
Further, the prefabricated size for enabling small box girder activity pedestal 32 described in the T beam activity pedestal 31/ is a × b × c,
Wherein, a indicates that longitudinal width, b indicate that transverse width, c indicate vertical height, unit m；It is the T beam activity pedestal 31, described
The prefabricated size of small box girder activity pedestal 32 is respectively 1m × 1m × 0.3m and 1m × 0.6m × 0.3m.In pipe pile foundation and lower part
After the completion of fixed base construction, corresponding the T beam activity pedestal 31, the small box girder activity pedestal are installed according to the actual situation
32。
In embodiments of the present invention, as shown in Figure 1, the fixation beam-ends of precast beam pedestal is equipped with an end stand seat, walking beam
End is equipped with several end stand seats, end stand seat is added in movable end carriage according to practical girder span type, to adapt to more span precast beams
Construction.The fixation beam-ends of precast beam pedestal, movable beam-ends are the conventional term of continuous beam or simply supported beam system, therefore are not scheming
Middle mark.
The present invention provides a kind of universal precast beam pedestal for being applicable in Soft Clay and its construction method, the present invention by
The mode that multiple end stand seats are arranged in lower fixed stage seat realizes the prefabricated function of a variety of different spans box beams, top movable pedestal with
Lower fixed stage seat is single by traditional role by that can place different types of T beam activity pedestal and small box girder activity pedestal
Precast pedestal be changed into universal precast pedestal, the precast beam construction versatility that can satisfy different spans and section is wanted
It asks.
Lower fixed stage seat is effectively connected with pipe pile foundation, is high-strength prestress pipe pile foundation, is fixed by lower part
Upper load is passed to pipe pile foundation by the integral beam type structure of pedestal, is in embodiments of the present invention PHC pipe for pipe pile foundation
Pile foundation, wherein pile body is finished product structure, can effectively ensure that pipe pile foundation quality meets design requirement, can be deep into high wind
Change rock stratum, effectively reduces sedimentation of the precast pedestal in Soft Clay, overcome the environmental gap of soft soil layer.
As a kind of preferred embodiment of the embodiment of the present invention, as shown in figure 5, the pile body 12 and the lower fixed stage seat
Pile crown connector 11 is additionally provided between 2；The bottom of the lower fixed stage seat 2 is flat to be equipped with bed course 116, and the pile crown connector
11 are connected the pile body with the lower fixed stage seat 2 through the bed course 116；The pile crown connector 11 connects including pile crown
Connect frame and the wadding weft variation 115 for being cast in the pile crown connection frame being placed in 12 inner cavity of pile body.Stake
Upper load is transferred to pile body 12 by head connector 11, then is transferred to stratum by pile body 12；Effective connection is also formed with pile body；It fills out
Core concrete through hole wall friction power forms effective connection with pile body, guarantees the transmitting of load.
Further, as shown in Fig. 5~6, the pile crown connection frame includes backing board 111, connection reinforcing bar 112 and spiral hoop
Muscle 113；Backing board 111 is used to serve as the perfusion bed die below the bed course 116 within the scope of 0.5~1.5m, in the present embodiment
In, backing board 1m below the bed course 116；The weldering of connection reinforcing bar 112 of several circle ring array distributions is connected in the backing board 111
On, and the connection reinforcing bar 112 forms a virtual cylinder；Wherein, the connection reinforcing bar 112 is located on the bed course 116
Part is for anchoring into the lower fixed stage seat 2；Tie hoop 113 is wound in the peripheral side of several connection reinforcing bars 112, and
It is fixed using spacer bar 114.Connection 112 one end of reinforcing bar is embedded to the concrete in the lower fixed stage seat 2, other end embedment
Wadding weft variation makes wadding weft variation and the lower fixed stage seat 2 form effective connection.
Further, the connection reinforcing bar 112 is located at 12~18 ° of dog-ears of part outward bending on the bed course 116；?
It is specially 15 ° in the present embodiment, which raises the connective stabilities between lower fixed stage seat 2 and pile body.
Specifically, as shown in Figure 10, the first built-in fitting group 41 is adopted with being adapted between the second connected built-in fitting group 42
It is connected with the junction steel plate 43 of triangular form.If replacing the T beam activity pedestal 31 is the small box girder activity pedestal 32 or replacement
The small box girder activity pedestal 32 is the T beam activity pedestal 31, then replaces after cutting the junction steel plate 43 and adopt again
It is weldingly connected with the junction steel plate 43 of triangular form, save the cost and resource decrease the construction time.
As a kind of preferred embodiment of the embodiment of the present invention, as shown in figs. 7-9, the top movable pedestal 3 further includes packet
Corner angle 33, pre-buried tie rod hole 35 and hanging ring 34；Top angle 33 is set to the T beam activity pedestal 31 and/or the small box girder
On the rib of movable pedestal 32；The top angle 33 with stainless steel bed die for being connected；Pre-buried tie rod hole 35 is living set on the T beam
In dynamic pedestal 31 and/or the small box girder activity pedestal 32；Hanging ring 34 is set to the T beam activity pedestal 31 and/or the small case
On beam activity pedestal 32.32 baseplate width of small box girder activity pedestal is 1m, and it is suitable that 31 bottom plate span of T beam activity pedestal, which is 0.6m,
Different height beam body is answered, prefabricated box -beam is by the way of side form packet bed die.The activity of small box girder described in the T beam activity pedestal 31/
The pre-buried hanging ring 34 in the top of pedestal 32, facilitates lifting construction；On the one hand the top angle 33 of setting protects pedestal corner angle, another party
For being welded and fixed steel bed die, steel bed die is those skilled in the art's common technology means in face, is not identified in figure, and due to girder span across
Middle position and design camber size be not unique, and the top of the lower fixed stage seat keeps horizontal, according to design at steel bed die
It is required that setting camber；Pre-buried tie rod hole 35 is PVC preformed hole, in the present embodiment longitudinal pitch 0.5m, away from end
0.25m, to wear side template split bolt.
Further, top movable pedestal 3 is set on lower fixed stage seat, between every adjacent two top movables pedestal 3
It is reserved with 525~1300mm lifting slot, is not therefore marked in figure for the routine operation of this field；When beam processed, Yu Liang
Lifting slot setting in end inside drops template and voussoir, when lifting, removes voussoir and drops template, be inserted into hanging beam, lift by crane beam section.
Further, as shown in Fig. 2, the bottom of the end stand seat 22 is laterally disposed with two for undertaking beam section tensioning
The pipe pile foundation 1 of load after arch, for undertaking the load after beam section tensioning arch camber；The bottom of the master pedestal 21
Longitudinal pitch is disposed with more for uniformly sharing the pipe pile foundation 1 of load when beam section pours, and pours for uniformly sharing beam section
Load when building.Under the premise of guaranteeing 1 pile bottom force holding layer of pipe pile foundation is strongly weathered sand-rock, according to magnitude of load and end stand
Seat, master pedestal difference select unused stake diameter, and stress is safe and reliable, and economical rationality, final to realize to a variety of different spans
Precast beam pedestal versatility.
The embodiment of the present invention also provides a kind of construction method according to above-mentioned precast beam pedestal, the step of the construction method
Suddenly include:
Demarcate the stake position of pipe pile foundation 1, and the pipe pile foundation 1 of constructing；
End stand seat 22 and master pedestal 21 are poured in the pipe pile foundation 1, and forms integral beam type structure；
Several first built-in fitting groups 41 are embedded in advance on end stand seat 22 and master pedestal 21；
The top movable pedestal 3 for being embedded with the second built-in fitting group 42 is placed in the top that the first built-in fitting group 41 is formed
In portion activity pedestal installation region, and the second built-in fitting group 42 that the first built-in fitting group 41 is connected with adaptation is connected
It connects；Wherein the top movable pedestal 3 includes the identical T beam activity pedestal 31 of longitudinal width and/or small box girder activity pedestal 32,
The top movable pedestal 3 that top movable pedestal installation region is placed is that the T beam activity pedestal 31 and the small box girder are living
At least one of dynamic pedestal 32.
Further, the step of construction pipe pile foundation 1 includes:
Pile body 12 is squeezed into the stake position of calibration, prefabricated pile crown connection frame is put into 12 inner cavity of pile body described in the pile body 12
In；
To the casting wadding weft variation 115 in the pile crown connection frame in 12 inner cavity of pile body.
Further, the pile crown connection frame includes backing board 111, connection reinforcing bar 112 and tie hoop 113；Backing board
111 for serving as the perfusion bed die below the bed course 116 within the scope of 0.5~1.5m；The connection of several circle ring array distributions
The weldering of reinforcing bar 112 is connected on the backing board 111, and the connection reinforcing bar 112 forms a virtual cylinder；Wherein, the connection
Reinforcing bar 112 is located at the part on the bed course 116 for anchoring into the lower fixed stage seat 2；Tie hoop 113 is wound in several
The peripheral side of the connection reinforcing bar 112, and it is fixed using spacer bar 114.Connection 112 one end of reinforcing bar is embedded to the lower part and fixes
Concrete in pedestal 2, the other end are embedded to wadding weft variation, form wadding weft variation and the lower fixed stage seat 2 effectively
Connection.
As shown in Fig. 5~6, after the completion of bed course 116 is constructed, the six roots of sensation is connected into reinforcing bar 112 and backing board 111 welds jail
Gu and binding spiral reinforcement 113, then connect at 1m below whole decentralization to the pile crown on pile body and bend 15 ° at the top of reinforcing bar 112
Dog-ear, leakage 30cm is anchored into lower fixed stage seat, and connects and supports connection reinforcing bar using three spacer bars 114 at pile crown
112, then it is poured C30 wadding weft variation 115.
Specifically, as shown in Figure 10, the second built-in fitting group 42 the first built-in fitting group 41 being connected with adaptation
It is weldingly connected using the junction steel plate 43 of triangular form；If replace the T beam activity pedestal 31 be the small box girder activity pedestal 32,
Or the replacement small box girder activity pedestal 32 is the T beam activity pedestal 31, then replaces simultaneously after cutting the junction steel plate 43
It is weldingly connected again using the junction steel plate 43 of triangular form.
The present invention is not only limited to above-mentioned preferred forms, anyone can show that other are each under the inspiration of the present invention
The product of kind form, however, make any variation in its shape or structure, it is all with identical or similar with the present invention
Technical solution, within its protection scope.
Claims (10)
1. a kind of universal precast beam pedestal for being applicable in Soft Clay, which is characterized in that the precast beam pedestal includes:
Pipe pile foundation (1) comprising pile body (12)；
The lower fixed stage seat (2) being connected with the pile body (12) comprising multiple end stand seats (22) being spaced apart and be set to
The master pedestal (21) concordant with the end stand seat between the adjacent end stand seat (22)；It is pre- on the lower fixed stage seat (2)
It is embedded with several first built-in fitting groups (41)；
Top movable pedestal (3) comprising the identical T beam activity pedestal (31) of longitudinal width and/or small box girder activity pedestal
(32)；The T beam activity pedestal (31) and/or the small box girder activity pedestal (32) adaptation are placed in the first built-in fitting group
(41) it in the top movable pedestal installation region formed, is embedded with for be adapted to connected the with the first built-in fitting group (41)
Two built-in fitting groups (42).
2. a kind of universal precast beam pedestal for being applicable in Soft Clay according to claim 1, it is characterised in that:
Pile crown connector (11) are additionally provided between the pile body (12) and the lower fixed stage seat (2)；
The bottom of the lower fixed stage seat (2) is flat to be equipped with bed course (116), and the pile crown connector (11) runs through the bed course
(116) pile body is connected with the lower fixed stage seat (2)；
The pile crown connector (11) includes pile crown connection frame and is placed in the pile body (12) inner cavity for being cast in
Wadding weft variation (115) in the pile crown connection frame.
3. a kind of universal precast beam pedestal for being applicable in Soft Clay according to claim 2, which is characterized in that the stake
Head connection frame include:
Backing board (111) is used to serve as the perfusion bed die within the scope of 0.5~1.5m of the bed course (116) lower section；
The connection reinforcing bar (112) of several circle ring array distributions, weldering is connected on the backing board (111), and the connection reinforcing bar
(112) a virtual cylinder is formed；Wherein, connection reinforcing bar (112) is located at the part on the bed course (116) for anchoring into
The lower fixed stage seat (2)；
Tie hoop (113) is wound in the peripheral side of several connections reinforcing bar (112), and solid using spacer bar (114)
It is fixed.
4. a kind of universal precast beam pedestal for being applicable in Soft Clay according to claim 3, which is characterized in that the company
Connect 12~18 ° of dog-ears of part outward bending that reinforcing bar (112) are located on the bed course (116).
5. a kind of universal precast beam pedestal for being applicable in Soft Clay according to claim 1, which is characterized in that described
One built-in fitting group (41) is connected with being adapted between the second connected built-in fitting group (42) using the junction steel plate (43) of triangular form.
6. a kind of universal precast beam pedestal for being applicable in Soft Clay according to claim 1, which is characterized in that the top
Portion's activity pedestal (3) further include:
Top angle (33) is set on the rib of the T beam activity pedestal (31) and/or the small box girder activity pedestal (32)；
The top angle (33) with stainless steel bed die for being connected；
Pre-buried tie rod hole (35) is set in the T beam activity pedestal (31) and/or the small box girder activity pedestal (32)；With
And
Hanging ring (34) on the T beam activity pedestal (31) and/or the small box girder activity pedestal (32).
7. a kind of universal precast beam pedestal for being applicable in Soft Clay according to claim 1, which is characterized in that the end
The bottom of pedestal (22) is laterally disposed with two for undertaking the pipe pile foundation (1) of the load after beam section tensioning arch camber；
The bottom longitudinal pitch of the master pedestal (21) is disposed with more for uniformly sharing the tubular pole of load when beam section pours
Basic (1).
8. a kind of construction method of precast beam pedestal described in any one according to claim 1~7, which is characterized in that described
The step of construction method includes:
The stake position of pipe pile foundation (1) is demarcated, and constructs the pipe pile foundation (1)；
End stand seat (22) and master pedestal (21) are poured on the pipe pile foundation (1), and form integral beam type structure；
Several first built-in fitting groups (41) are embedded on end stand seat (22) and master pedestal (21) in advance；
The top movable pedestal (3) for being embedded with the second built-in fitting group (42) is placed in what the first built-in fitting group (41) was formed
In top movable pedestal installation region, and the second built-in fitting group that the first built-in fitting group (41) is connected with adaptation
(42) it connects；Wherein the top movable pedestal (3) includes the identical T beam activity pedestal (31) of longitudinal width and/or small box girder
Movable pedestal (32), the top movable pedestal (3) that top movable pedestal installation region is placed are the T beam activity pedestal
(31) and at least one of the small box girder activity pedestal (32).
9. construction method according to claim 8, which is characterized in that construction pipe pile foundation (1) the step of include:
Pile body (12) are squeezed into the stake position of calibration, prefabricated pile crown connection frame is put into the pile body (12) pile body (12)
In chamber；
Wadding weft variation (115) are poured in the pile crown connection frame in the pile body (12) inner cavity.
10. construction method according to claim 8, which is characterized in that by the first built-in fitting group (41) and adaptation phase
The second built-in fitting group (42) even is weldingly connected using the junction steel plate (43) of triangular form；
If replacing the T beam activity pedestal (31) is the small box girder activity pedestal (32) or the replacement small box girder movable table
Seat (32) is the T beam activity pedestal (31), then replaces after cutting the junction steel plate (43) and again using triangular form
Junction steel plate (43) is weldingly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811459978.9A CN109397522B (en) | 2018-11-30 | 2018-11-30 | Universal precast beam pedestal suitable for soft soil geology and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811459978.9A CN109397522B (en) | 2018-11-30 | 2018-11-30 | Universal precast beam pedestal suitable for soft soil geology and construction method thereof |
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| Publication Number | Publication Date |
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| CN109397522A true CN109397522A (en) | 2019-03-01 |
| CN109397522B CN109397522B (en) | 2023-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811459978.9A Active CN109397522B (en) | 2018-11-30 | 2018-11-30 | Universal precast beam pedestal suitable for soft soil geology and construction method thereof |
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| CN (1) | CN109397522B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110666953A (en) * | 2019-10-25 | 2020-01-10 | 石家庄铁道大学 | High-speed railway beam-making pedestal suitable for unfavorable geology and construction method thereof |
| CN114687372A (en) * | 2022-03-23 | 2022-07-01 | 保利长大工程有限公司 | Prefabricated beam pedestal miniature steel pipe pile compression-resistant foundation and construction method thereof |
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| CN209615940U (en) * | 2018-11-30 | 2019-11-12 | 中铁大桥局集团第四工程有限公司 | A kind of universal precast beam pedestal being applicable in Soft Clay |
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| CN202097833U (en) * | 2011-05-24 | 2012-01-04 | 中铁四局集团第一工程有限公司 | Steel-concrete girder fabricating pedestal with small independent concrete foundations |
| KR20160104258A (en) * | 2015-02-26 | 2016-09-05 | 컨텍이앤씨 주식회사 | Movable scaffolding system mounted upper-structure of bridge and bridge construction method therewith |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110666953A (en) * | 2019-10-25 | 2020-01-10 | 石家庄铁道大学 | High-speed railway beam-making pedestal suitable for unfavorable geology and construction method thereof |
| CN114687372A (en) * | 2022-03-23 | 2022-07-01 | 保利长大工程有限公司 | Prefabricated beam pedestal miniature steel pipe pile compression-resistant foundation and construction method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109397522B (en) | 2023-11-28 |
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