CN110396915A - U-shaped Steel Thin-Wall-prestress reinforcement Combined concrete bent cap and thin wall steel tube concrete pier stud joint structure and construction technology - Google Patents
U-shaped Steel Thin-Wall-prestress reinforcement Combined concrete bent cap and thin wall steel tube concrete pier stud joint structure and construction technology Download PDFInfo
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- CN110396915A CN110396915A CN201910623853.3A CN201910623853A CN110396915A CN 110396915 A CN110396915 A CN 110396915A CN 201910623853 A CN201910623853 A CN 201910623853A CN 110396915 A CN110396915 A CN 110396915A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 272
- 239000010959 steel Substances 0.000 title claims abstract description 272
- 239000004567 concrete Substances 0.000 title claims abstract description 115
- 230000002787 reinforcement Effects 0.000 title claims abstract description 83
- 238000010276 construction Methods 0.000 title claims abstract description 18
- 238000005516 engineering process Methods 0.000 title claims abstract description 9
- 238000013461 design Methods 0.000 claims abstract description 8
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 27
- 238000007789 sealing Methods 0.000 claims description 26
- 230000003014 reinforcing effect Effects 0.000 claims description 21
- 238000003466 welding Methods 0.000 claims description 11
- 238000012545 processing Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 5
- 238000004873 anchoring Methods 0.000 claims 1
- 239000011513 prestressed concrete Substances 0.000 abstract description 4
- 238000005266 casting Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract 1
- 238000011900 installation process Methods 0.000 abstract 1
- 239000003351 stiffener Substances 0.000 description 5
- 239000002689 soil Substances 0.000 description 4
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 238000002788 crimping Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 210000002435 tendon Anatomy 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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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
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/28—Concrete reinforced prestressed
- E01D2101/285—Composite prestressed concrete-metal
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses U-shaped Steel Thin-Wall-prestress reinforcement Combined concrete bent caps and thin wall steel tube concrete pier stud joint structure and construction technology, including U-shaped Steel Thin-Wall-prestress reinforcement Combined concrete bent cap and thin wall steel tube concrete pier stud, when the thin wall steel tube concrete pier stud is connect with U-shaped Steel Thin-Wall-prestress reinforcement Combined concrete bent cap, connector is set on the thin wall steel tube concrete pier stud, otic placode, retractility threaded steel pipe, landing beam, retractility cable wire and anchor ear, ensure the stability of installation process, into the U-shaped thin-walled steel gird processed, casting concrete forms the U-shaped Steel Thin-Wall-prestress reinforcement Combined concrete bent cap, reach design strength to concrete setting, the combination beam that the pre-buried deformed bar therein of tensioning is formed again.The connection of U-shaped Steel Thin-Wall-prestressed concrete combination beam and steel core concrete column of the invention is reliable, easy for installation, construction is simple, antidetonation fire resistance are good and low cost.
Description
Technical field
The present invention relates to building fields, and in particular to U-shaped Steel Thin-Wall-prestress reinforcement Combined concrete bent cap and Steel Thin-Wall
Pipe concrete pier stud joint structure and construction technology.
Background technique
Bent cap is the crossbeam being arranged at the top of bridge pile bent pier, and also known as cap beam, main function are supporting bridge superstructures,
And whole load is passed into substructure.In current bridge engineering construction construction, due to bridge height, geology and landform item
Part limitation, Partial Bridges lower part uses the structure type of Single column pier and Prestressed Slab Beams, generally by setting support on pier stud
Point uses I-steel or Bailey bracket as bent cap Support bracket.Existing T shape Single column pier beam, Dun Liang and with bear shearing based on
Structural beams in, the disadvantages of section of generally existing component is big, arrangement of reinforcement is more, ductility is poor, anti-seismic performance is insufficient.
Therefore, need to research and develop that a kind of structure connection is reliable, construction quickly and easily joint structure and construction technology.
Summary of the invention
The object of the present invention is to provide a kind of connections of structure reliable, construct quickly and easily joint structure and construction technology.
To realize the present invention purpose and the technical solution adopted is that such, U-shaped Steel Thin-Wall-prestress reinforcement coagulation local soil type
Closing lid beam and thin wall steel tube concrete pier stud joint structure, including U-shaped Steel Thin-Wall-prestress reinforcement Combined concrete bent cap and thin
Wall concrete filled steel tube pier stud.
The upper end of the thin wall steel tube concrete pier stud is connected to U-shaped Steel Thin-Wall-prestress reinforcement Combined concrete bent cap
The lower surface of span centre.
The U-shaped Steel Thin-Wall-prestress reinforcement Combined concrete bent cap, including U-shaped thin-walled steel plate, framework of steel reinforcement and several
Presstressed reinforcing steel.
The cross section of the U-shaped thin-walled steel plate is U-shaped, and it is closed bottom surface that the upper end, which has opening, lower end,.
It is the internal cavities of U-shaped thin-walled steel plate below the opening.
The lateral length direction of the internal cavities is the longitudinal direction of U-shaped thin-walled steel plate, the longitudinal length of the internal cavities
Direction is the transverse direction of U-shaped thin-walled steel plate.
The part of the internally positioned cavity two sides of U-shaped thin-walled steel plate is denoted as side plate I.The U-shaped thin-walled steel plate is located at interior
The part of the lower section of portion's cavity is denoted as bottom plate I.
Longitudinal both ends of the U-shaped thin-walled steel plate are welded with sealing plate.
In several internally positioned cavitys of the presstressed reinforcing steel.After each presstressed reinforcing steel forms prestressing force by tensioning,
Its both ends is anchored on sealing plate.
The inner space of the U-shaped thin-walled steel plate pours and fills up concrete.
Further, the inner surface of the bottom plate I is welded with several pegs.
Further, the inner space of the U-shaped thin-walled steel plate is provided with framework of steel reinforcement, and several presstressed reinforcing steels pass through steel
Tendons skeleton, the framework of steel reinforcement is for fixing presstressed reinforcing steel.
Further, the open end of the U-shaped thin-walled steel plate is welded with several cover boards.
Further, the U-shaped thin-walled steel plate is formed by thin-walled steel plate by clod wash, splicing or welding processing.
Further, the presstressed reinforcing steel is the compressor wire for having cementability, the steel strand wires for having cementability, has cementability
Prestressing force spiral, the compressor wire of non-binding, the steel strand wires of non-binding or non-binding prestressing force screw-thread steel
Muscle.
Based on above-mentioned U-shaped Steel Thin-Wall-prestress reinforcement Combined concrete bent cap and thin wall steel tube concrete pier stud node
Construction technology, comprising the following steps:
1) thin-walled steel plate is subjected to clod wash, splicing or welding processing, so that the U-shaped thin-walled steel plate be made.Wherein, described
U-shaped thin-walled steel plate includes bottom plate I and two side plate I.Several through-holes is processed in the position of I span centre of bottom plate.
2) framework of steel reinforcement is bound, and the framework of steel reinforcement is placed into the internal cavities of U-shaped thin-walled steel plate.
3) several presstressed reinforcing steels pass through framework of steel reinforcement and are fixed on framework of steel reinforcement, so that the every presstressed reinforcing steel
Both ends stretch out U-shaped thin-walled steel plate.
4) one end that several presstressed reinforcing steels stretch out U-shaped thin-walled steel plate passes through several through-holes of one block of sealing plate, Ruo Gansuo
It states presstressed reinforcing steel and stretches out the other end of U-shaped thin-walled steel plate and pass through several through-holes of another block of sealing plate, and by this two blocks of sealing plates
It is connected on two end faces of U-shaped thin-walled steel plate.
5) thin wall steel tube concrete pier stud is mounted on to the position of design, and in the upper of the thin wall steel tube concrete pier stud
Several connectors is arranged in end.
6) anchor ear is set on the surface of the thin wall steel tube concrete pier stud, anchor ear is by several strut Auxiliary supports on ground
On.The surface of the anchor ear connects two otic placodes, it is ensured that the line of the two otic placodes and thin wall steel tube concrete pier stud
Axis intersection.The two described otic placodes are all connected with a retractility threaded steel pipe, the upper end of the every retractility threaded steel pipe
It is all connected with landing beam.Wherein, the upper surface of two landing beams and the upper surface of thin wall steel tube concrete pier stud are in same water
In plane, several retractility cable wires are connected between two landing beams.
7) by step 1) to the U-shaped thin-walled steel plate, framework of steel reinforcement, several presstressed reinforcing steels and two processed in 4)
The assembly of block sealing plate is installed to the upper end of thin wall steel tube concrete pier stud, makes the several of several connector insertion bottom plates I
U-shaped Steel Thin-Wall intralamellar part, and the ribbed stiffener for welding enhancing connection in U-shaped Steel Thin-Wall intralamellar part, reinforcing stress, institute are protruded into after through-hole
The longitudinal both ends for stating bottom plate I are separately mounted to the upper surface of two landing beams.
8) it is poured inside Xiang Suoshu U-shaped thin-walled steel gird and fills up concrete.
9) after the concrete reaches design strength, tensioning is carried out to the one or both ends of the presstressed reinforcing steel.And
The both ends sandwiched stretch-draw anchor part of the every presstressed reinforcing steel, is anchored at each stretch-draw anchor part on sealing plate.
10) otic placode, retractility threaded steel pipe, landing beam, retractility cable wire and anchor ear are removed.
The beneficial effects of the present invention are:
1, U-shaped Steel Thin-Wall-prestress reinforcement Combined concrete bent cap takes strengthening measure in node region, in thin-walled steel gird
Welding local ribbed stiffener, local cypher peg etc. keeps power transmitting reliable, on appearance without influence, reserves construction overlap joint hole；
2, pre-buried in thin wall steel tube concrete pier stud node area to snap into U-shaped Steel Thin-Wall-prestress reinforcement coagulation local soil type
Reinforcing bar in closing lid beam, then gos deep into combination beam, then casting concrete, makes U-shaped Steel Thin-Wall-prestress reinforcement Combined concrete
The globality of bent cap and thin wall steel tube concrete pier stud Column border node is stronger, and Liang Yuzhu is in node region one integrated mass；
3, design has the combination tool of auxiliary construction platform, provides temporary construction support, it is ensured that work progress stationary nodes
The stability and construction precision in region.
Detailed description of the invention
Fig. 1 is U-shaped Steel Thin-Wall-prestress reinforcement Combined concrete bent cap part drawing；
Fig. 2 is U-shaped Steel Thin-Wall-prestress reinforcement Combined concrete Coping Construction artwork；
Fig. 3 is U-shaped Steel Thin-Wall-prestress reinforcement Combined concrete bent cap bottom view；
Fig. 4 is U-shaped Steel Thin-Wall-prestress reinforcement Combined concrete bent cap side view；
Fig. 5 is U-shaped Steel Thin-Wall-prestress reinforcement Combined concrete bent cap top view；
Fig. 6 is U-shaped Steel Thin-Wall-prestress reinforcement Combined concrete bent cap longitudinal sectional drawing；
Fig. 7 is A-A cross-sectional view；
Fig. 8 is B-B cross-sectional view；
Fig. 9 is that U-shaped Steel Thin-Wall-prestress reinforcement Combined concrete bent cap is applied with thin wall steel tube concrete pier stud joint structure
Work artwork；
Figure 10 is U-shaped Steel Thin-Wall-prestress reinforcement Combined concrete bent cap and thin wall steel tube concrete pier stud joint structure
Schematic diagram.
In figure:: U-shaped thin-walled steel plate 1, bottom plate I 101, peg 1011, side plate I 102, crimping 1021, framework of steel reinforcement 2, longitudinal direction
Reinforcing bar 201, stirrup 202, presstressed reinforcing steel 3, stretch-draw anchor part 301, sealing plate 4, cover board 5, concrete 6, thin wall steel tube concrete pier
Column 7, connector 701, otic placode 702, retractility threaded steel pipe 703, landing beam 704, retractility cable wire 705, anchor ear 706 and strut
707。
Specific embodiment
Below with reference to embodiment, the invention will be further described, but should not be construed the above-mentioned subject area of the present invention only
It is limited to following embodiments.Without departing from the idea case in the present invention described above, according to ordinary skill knowledge and used
With means, various replacements and change are made, should all include within the scope of the present invention.
Embodiment 1:
Present embodiment discloses U-shaped Steel Thin-Wall-prestress reinforcement Combined concrete bent caps and thin wall steel tube concrete pier stud
Joint structure, including U-shaped Steel Thin-Wall-prestress reinforcement Combined concrete bent cap and thin wall steel tube concrete pier stud 7.
Referring to Fig. 9 or 10, it is mixed that the upper end of the thin wall steel tube concrete pier stud 7 is connected to U-shaped Steel Thin-Wall-prestress reinforcement
Lower surface in solidifying local soil type's closing lid girder span, and the ribbed stiffener for welding enhancing connection in U-shaped Steel Thin-Wall intralamellar part, reinforcing stress.
The U-shaped Steel Thin-Wall-prestress reinforcement Combined concrete bent cap, if including U-shaped thin-walled steel plate 1, framework of steel reinforcement 2 and
Intervene stress rib 3.
The strong welds such as the U-shaped thin-walled steel plate 1 is formed by thin-walled steel plate by welding processing, and process ensures.It is described
The model Q235 of thin-walled steel plate.Referring to Fig. 1 or 2, the U-shaped thin-walled steel plate 1 is cross-section girder steel.
Referring to Fig. 1, the cross section of the U-shaped thin-walled steel plate 1 is U-shaped, and it is closed bottom that the upper end, which has opening, lower end,
Face.
It is the internal cavities of U-shaped thin-walled steel plate 1 below the opening.
The lateral length direction of the internal cavities is the longitudinal direction of U-shaped thin-walled steel plate 1, the longitudinal length of the internal cavities
Direction is the transverse direction of U-shaped thin-walled steel plate 1.
The part of the internally positioned cavity two sides of the U-shaped thin-walled steel plate 1 is denoted as side plate I 102, and described U-shaped thin-walled steel plate 1
Bottom plate I 101 is denoted as in the part of the lower section of internal cavities.
The inside of the bottom plate I 101 is welded with several pegs 1011.
Referring to Fig. 3,4,5 or 6, longitudinal both ends of the U-shaped thin-walled steel plate 1 are welded with sealing plate 4, each sealing plate 4
On be provided with several through-holes.
Referring to fig. 2,3 or 4, the U-shaped thin-walled steel plate 1 is internally provided with framework of steel reinforcement 2, and the framework of steel reinforcement 2 includes
Several longitudinal reinforcement 201, stirrup 202 and arrangements of reinforcement, the model of several longitudinal reinforcements 201, stirrup 202 and arrangement of reinforcement
HRB335。
Referring to fig. 2,6,7 or 8, several presstressed reinforcing steels 3 pass through several through-holes and framework of steel reinforcement 2 on sealing plate 4.It is several
The presstressed reinforcing steel 3 is close to the open end of U-shaped thin-walled steel plate 1.
In the present embodiment, the presstressed reinforcing steel 3 is the steel strand wires of non-binding.The arrangement of several presstressed reinforcing steels 3
Mode is straight line arrangement.
Referring to Fig. 3, the both ends of the every presstressed reinforcing steel 3 are clamping stretch-draw anchor part 301, several stretch-draw anchors
Part 301 is anchored on sealing plate 4.
The open end of the U-shaped thin-walled steel plate 1 is welded with several cover boards 5, and the cross section of the cover board 5 is u-shaped, if
The open end for doing the cover board 5 is opposite with the open end of U-shaped thin-walled steel plate 1.
The cover board 5 includes bottom plate II and two side plate II, and two side plates II are welded to two side plates I 102
Outside.
Referring to fig. 2, the inside of the U-shaped thin-walled steel plate 1 pours and is filled with concrete 6, and the concrete 6 is to be able to satisfy
The normal concrete of prestressed concrete strength condition.To the U-shaped thin-walled steel plate 1, framework of steel reinforcement 2, several presstressed reinforcing steels 3
U-shaped Steel Thin-Wall-prestressed concrete combination beam is formed with concrete 6.
In use, the U-shaped Steel Thin-Wall-prestressed concrete combination beam is disposed with the open end of presstressed reinforcing steel as the beam
Tensile region.
Embodiment 2:
Present embodiment discloses U-shaped Steel Thin-Wall-prestress reinforcement Combined concrete bent caps and thin wall steel tube concrete pier stud
Joint structure, including U-shaped Steel Thin-Wall-prestress reinforcement Combined concrete bent cap and thin wall steel tube concrete pier stud 7.
Referring to Fig. 9 or 10, it is mixed that the upper end of the thin wall steel tube concrete pier stud 7 is connected to U-shaped Steel Thin-Wall-prestress reinforcement
Lower surface in solidifying local soil type's closing lid girder span.
The U-shaped Steel Thin-Wall-prestress reinforcement Combined concrete bent cap, if including U-shaped thin-walled steel plate 1, framework of steel reinforcement 2 and
Intervene stress rib 3.
Referring to Fig. 1, the cross section of the U-shaped thin-walled steel plate 1 is U-shaped, and it is closed bottom that the upper end, which has opening, lower end,
Face.
It is the internal cavities of U-shaped thin-walled steel plate 1 below the opening.
The lateral length direction of the internal cavities is the longitudinal direction of U-shaped thin-walled steel plate 1, the longitudinal length of the internal cavities
Direction is the transverse direction of U-shaped thin-walled steel plate 1.
Referring to Fig. 1 or 2, the part of the internally positioned cavity two sides of the U-shaped thin-walled steel plate 1 is denoted as side plate I 102.The U-shaped
The part of the lower section of the internally positioned cavity of thin-walled steel plate 1 is denoted as bottom plate I 101.
Referring to Fig. 3,4,5 or 6, longitudinal both ends of the U-shaped thin-walled steel plate 1 are welded with sealing plate 4.
In the internally positioned cavity of several presstressed reinforcing steels 3.Each presstressed reinforcing steel 3 forms prestressing force by tensioning
Afterwards, both ends are anchored on sealing plate 4.
The inner space of the U-shaped thin-walled steel plate 1 pours and fills up concrete 6.The concrete 6 is normal concrete,
And the normal concrete meets tensioning concrete strength requirement.
Embodiment 3:
The present embodiment primary structure is with embodiment 2, further, referring to Fig. 1,6,7 or 8, the inner surface of the bottom plate I 101
It is welded with several pegs 1011.
Embodiment 4:
The present embodiment primary structure is with embodiment 3, further, referring to Fig. 1,6,7 or 8, the U-shaped thin-walled steel plate 1 it is interior
Portion space is provided with framework of steel reinforcement 2, and several presstressed reinforcing steels 3 pass through framework of steel reinforcement 2 and are fixed on framework of steel reinforcement 2.
Referring to Fig. 1 or 6, the framework of steel reinforcement 2 includes several longitudinal reinforcements 201, stirrup 202 and arrangement of reinforcement, several described
The model HRB335 of longitudinal reinforcement 201, stirrup 202 and arrangement of reinforcement.
Embodiment 5:
The present embodiment primary structure is with embodiment 4, and further, referring to Fig. 1,6,7 or 8, the U-shaped thin-walled steel plate 1 is opened
Mouth end is welded with several cover boards 5.Referring to Fig. 1 or 7, the cross section of the cover board 5 is u-shaped, the opening of several cover boards 5
It holds opposite with the open end of U-shaped thin-walled steel plate 1.
The cover board 5 includes bottom plate II and two side plate II, and two side plates II are welded to two side plates I 102
Outside.
Embodiment 6:
The present embodiment primary structure is with embodiment 5, and further, referring to Fig. 1,6,7 or 8, the U-shaped thin-walled steel plate 1 is by thin
The strong welds such as wall steel plate is formed by welding processing, and process ensures, the section phase of each position of the U-shaped thin-walled steel plate 1
Together.
Embodiment 7:
The present embodiment primary structure is with embodiment 6, and further, the presstressed reinforcing steel 3 is the steel strand wires of non-binding.
Embodiment 8:
Present embodiment discloses based on U-shaped Steel Thin-Wall-prestress reinforcement Combined concrete bent cap described in embodiment 1 with it is thin
The construction technology of wall concrete filled steel tube pier stud joint structure, referring to fig. 2 or 9, comprising the following steps:
1) thin-walled steel plate is subjected to welding processing, so that the U-shaped thin-walled steel plate 1 be made.Wherein, the U-shaped Steel Thin-Wall
Plate 1 includes bottom plate I 101 and two side plates I 102.Crimping 1021 is processed in the open end of each side plate I 102, each
Otic placode 702 is welded in the outer surface of the side plate I 102, which is located at the span centre position of place side plate I 102.At the bottom
The position of I 101 span centre of plate processes several through-holes, and in the company of the thin wall steel tube concrete pier stud 7 and U-shaped thin-walled steel plate 1
Connect place's welding ribbed stiffener；Several pegs 1011 are welded in the inner surface of the bottom plate I 101.
2) framework of steel reinforcement 2 is bound, and the framework of steel reinforcement 2 is placed into the internal cavities of U-shaped thin-walled steel plate 1.
3) several presstressed reinforcing steels 3 pass through the both ends of framework of steel reinforcement 2, so that the both ends of the every presstressed reinforcing steel 3 are equal
Stretch out U-shaped thin-walled steel plate 1.Wherein, several presstressed reinforcing steels 3 are close to the open end of U-shaped thin-walled steel plate 1.
4) one end that several presstressed reinforcing steels 3 stretch out U-shaped thin-walled steel plate 1 passes through several through-holes of one block of sealing plate 4, several
The other end that the presstressed reinforcing steel 3 stretches out U-shaped thin-walled steel plate 1 passes through several through-holes of another block of sealing plate 4, and will be described in this two pieces
Sealing plate 4 is connected on two end faces of U-shaped thin-walled steel plate 1.
5) several cover boards 5 are welded in the open end of the U-shaped thin-walled steel plate 1.By two side plates II of each cover board 5
It is welded to the outer surface of two side plates I 102.
6) thin wall steel tube concrete pier stud 7 is mounted on to the position of design, and in the thin wall steel tube concrete pier stud 7
The pre-buried several connector 701 in top connects two otic placodes 702 on the side wall of 7 upper end of thin wall steel tube concrete pier stud,
The line of the two otic placodes 702 intersects with the axis of thin wall steel tube concrete pier stud 7.
7) anchor ear 706,706 lower end of anchor ear and several struts are set on the surface of the thin wall steel tube concrete pier stud 7
707 upper end pushes against.The surface of the anchor ear 706 connects two otic placodes 702, it is ensured that the line of the two otic placodes 702 with
The axis of thin wall steel tube concrete pier stud 7 intersects.The two described otic placodes 702 are all connected with a retractility threaded steel pipe 703, often
The upper end of retractility threaded steel pipe 703 described in root is all connected with landing beam 704.Wherein, the upper surface of two landing beams 704 and
The upper surface of thin wall steel tube concrete pier stud 7 is connected with several flexible in same level between two landing beams 704
Property cable wire 705.
8) by step 1) to the U-shaped thin-walled steel plate 1, framework of steel reinforcement 2, several presstressed reinforcing steels 3 processed in 5)
It is installed to the upper end of thin wall steel tube concrete pier stud 7 with the assembly of two blocks of sealing plates 4, several connectors 701 is made to be inserted into bottom
It is protruded into after several through-holes of plate I 101 inside U-shaped thin-walled steel plate 1, longitudinal both ends of the bottom plate I 101 are separately mounted to two and put down
The upper surface of platform beam 704.And ribbed stiffener is welded in the junction of the thin wall steel tube concrete pier stud 7 and U-shaped thin-walled steel plate 1.
By two otic placodes 702 on the 7 upper end side wall of thin wall steel tube concrete pier stud respectively with the ear on two I 102 side walls of the edge of a wing
Plate 702 connects.
9) it is poured inside Xiang Suoshu U-shaped thin-walled steel gird 1 and fills up concrete 6.
10) after the concrete 6 reaches design strength, tensioning is carried out to the one or both ends of the presstressed reinforcing steel 3.And
In the both ends sandwiched stretch-draw anchor part 301 of the every presstressed reinforcing steel 3, each stretch-draw anchor part 301 is made to be anchored at sealing plate 4
On.
11) otic placode 702, retractility threaded steel pipe 703, landing beam 704, retractility cable wire 705, anchor ear 706 are removed
With strut 707.
Claims (7)
1.U shape Steel Thin-Wall-prestress reinforcement Combined concrete bent cap and thin wall steel tube concrete pier stud joint structure, feature exist
In: including the U-shaped Steel Thin-Wall-prestress reinforcement Combined concrete bent cap and thin wall steel tube concrete pier stud (7)；
The upper end of the thin wall steel tube concrete pier stud (7) be connected to U-shaped Steel Thin-Wall-prestress reinforcement Combined concrete bent cap across
In lower surface；
The U-shaped Steel Thin-Wall-prestress reinforcement Combined concrete bent cap, including U-shaped thin-walled steel plate (1), framework of steel reinforcement (2) and if
Intervene stress rib (3)；
The cross section of the U-shaped thin-walled steel plate (1) is U-shaped, and it is closed bottom surface that the upper end, which has opening, lower end,；
It is the internal cavities of U-shaped thin-walled steel plate (1) below the opening；
The lateral length direction of the internal cavities is the longitudinal direction of U-shaped thin-walled steel plate (1), the longitudinal length side of the internal cavities
To the transverse direction for U-shaped thin-walled steel plate (1)；
The part of the internally positioned cavity two sides of U-shaped thin-walled steel plate (1) is denoted as side plate I (102)；The U-shaped thin-walled steel plate (1)
The part of the lower section of internally positioned cavity is denoted as bottom plate I (101)；
Longitudinal both ends of the U-shaped thin-walled steel plate (1) are welded with sealing plate (4)；
In the internally positioned cavity of several presstressed reinforcing steels (3)；Each presstressed reinforcing steel (3) forms prestressing force by tensioning
Afterwards, both ends are anchored on sealing plate (4)；
The inner space of the U-shaped thin-walled steel plate (1) pours and fills up concrete (6).
2. U-shaped Steel Thin-Wall-prestress reinforcement Combined concrete bent cap according to claim 1 and thin wall steel tube concrete pier
Column joint structure, it is characterised in that: the inner surface of the bottom plate I (101) is welded with several pegs (1011).
3. U-shaped Steel Thin-Wall-prestress reinforcement Combined concrete bent cap according to claim 1 and thin wall steel tube concrete pier
Column joint structure, it is characterised in that: the inner space of the U-shaped thin-walled steel plate (1) is provided with framework of steel reinforcement (2), several described
Presstressed reinforcing steel (3) passes through framework of steel reinforcement (2), and the framework of steel reinforcement (2) is for fixing presstressed reinforcing steel (3).
4. U-shaped Steel Thin-Wall-prestress reinforcement Combined concrete bent cap according to claim 1 and thin wall steel tube concrete pier
Column joint structure, it is characterised in that: the open end of the U-shaped thin-walled steel plate (1) is welded with several cover boards (5).
5. U-shaped Steel Thin-Wall-prestress reinforcement Combined concrete bent cap according to claim 1 and thin wall steel tube concrete pier
Column joint structure, it is characterised in that: the U-shaped thin-walled steel plate (1) passes through clod wash, splicing or welding processing by thin-walled steel plate
At.
6. U-shaped Steel Thin-Wall-prestress reinforcement Combined concrete bent cap according to claim 1 and thin wall steel tube concrete pier
Column joint structure, it is characterised in that: the presstressed reinforcing steel (3) be have the compressor wire of cementability, the steel strand wires for having cementability,
There is the pre- of the prestressing force spiral of cementability, the compressor wire of non-binding, the steel strand wires of non-binding or non-binding
Stress spiral.
7. based on U-shaped Steel Thin-Wall-prestress reinforcement Combined concrete bent cap described in claim 1 and thin wall steel tube concrete pier
The construction technology of Column border node, it is characterised in that: the following steps are included:
1) thin-walled steel plate is subjected to clod wash, splicing or welding processing, so that the U-shaped thin-walled steel plate (1) be made；Wherein, the U
Shape thin-walled steel plate (1) includes bottom plate I (101) and two side plates I (102)；It is processed in the position of bottom plate I (101) span centre
Several through-holes；
2) framework of steel reinforcement (2) is bound, and the framework of steel reinforcement (2) is placed into the internal cavities of U-shaped thin-walled steel plate (1)；
3) several presstressed reinforcing steels (3) pass through framework of steel reinforcement (2) and are fixed on framework of steel reinforcement (2), so that every described pre-
U-shaped thin-walled steel plate (1) is stretched out at the both ends of stress rib (3)；
4) one end that several presstressed reinforcing steels (3) stretch out U-shaped thin-walled steel plate (1) passes through several through-holes of one piece of sealing plate (4), if
Do the presstressed reinforcing steel (3) stretch out U-shaped thin-walled steel plate (1) the other end pass through another piece of sealing plate (4) several through-holes, and by this
Two pieces of sealing plates (4) are connected on two end faces of U-shaped thin-walled steel plate (1)；
5) thin wall steel tube concrete pier stud (7) is mounted on to the position of design, and in the thin wall steel tube concrete pier stud (7)
Several connectors (701) are arranged in upper end；
6) anchor ear (706) are set on the surface of the thin wall steel tube concrete pier stud (7), anchor ear (706) is by several struts (707)
Auxiliary support is on the ground；The surface of the anchor ear (706) connects two otic placodes (702), it is ensured that the two described otic placodes (702)
Line intersect with the axis of thin wall steel tube concrete pier stud (7)；The two described otic placodes (702) are all connected with a retractility spiral shell
The upper end of line steel pipe (703), the every retractility threaded steel pipe (703) is all connected with landing beam (704)；Wherein, described in two
The upper surface of landing beam (704) and the upper surface of thin wall steel tube concrete pier stud (7) are in same level, two platforms
Several retractility cable wires (705) are connected between beam (704)；
7) by step 1) to process in 4) the U-shaped thin-walled steel plate (1), framework of steel reinforcement (2), several presstressed reinforcing steels
(3) and the assembly of two pieces of sealing plates (4) is installed to the upper ends of thin wall steel tube concrete pier stud (7), makes several connectors
(701) U-shaped thin-walled steel plate (1) inside, the longitudinal direction two of the bottom plate I (101) are protruded into after being inserted into several through-holes of bottom plate I (101)
End is separately mounted to the upper surface of two landing beams (704)；
8) it pours inside Xiang Suoshu U-shaped thin-walled steel gird (1) and fills up concrete (6)；
9) after the concrete (6) reaches design strength, tensioning is carried out to the one or both ends of the presstressed reinforcing steel (3)；And
In the both ends sandwiched stretch-draw anchor part (301) of the every presstressed reinforcing steel (3), make each stretch-draw anchor part (301) anchoring
On sealing plate (4)；
10) otic placode (702), retractility threaded steel pipe (703), landing beam (704), retractility cable wire (705), anchor ear are removed
(706) and strut (707).
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| CN201910623853.3A CN110396915A (en) | 2019-07-11 | 2019-07-11 | U-shaped Steel Thin-Wall-prestress reinforcement Combined concrete bent cap and thin wall steel tube concrete pier stud joint structure and construction technology |
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| CN201910623853.3A CN110396915A (en) | 2019-07-11 | 2019-07-11 | U-shaped Steel Thin-Wall-prestress reinforcement Combined concrete bent cap and thin wall steel tube concrete pier stud joint structure and construction technology |
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| CN112942679A (en) * | 2021-01-29 | 2021-06-11 | 重庆大学 | Precast concrete frame beam capable of realizing standardization and construction method thereof |
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