CN208586817U - A kind of external prestressing strengthening concrete frame beam structure - Google Patents
A kind of external prestressing strengthening concrete frame beam structure Download PDFInfo
- Publication number
- CN208586817U CN208586817U CN201821082839.4U CN201821082839U CN208586817U CN 208586817 U CN208586817 U CN 208586817U CN 201821082839 U CN201821082839 U CN 201821082839U CN 208586817 U CN208586817 U CN 208586817U
- Authority
- CN
- China
- Prior art keywords
- external prestressing
- tensioning
- end structure
- vierendeel girder
- steels
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
- 238000005728 strengthening Methods 0.000 title claims abstract description 49
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 98
- 239000010959 steel Substances 0.000 claims abstract description 98
- 238000012546 transfer Methods 0.000 claims abstract description 25
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 21
- 238000000338 in vitro Methods 0.000 claims abstract description 9
- 210000003205 muscle Anatomy 0.000 claims description 13
- 230000003014 reinforcing effect Effects 0.000 claims description 13
- 229920006334 epoxy coating Polymers 0.000 claims description 3
- 230000013011 mating Effects 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 2
- 230000007423 decrease Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 11
- 238000009408 flooring Methods 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Abstract
External prestressing strengthening concrete frame beam structure provided by the utility model, belongs to construction engineering technical field, which includes at least two groups external prestressing steels, tensioning end structure, fixed end structure and transfer.Stretching end structure is located at below the often middle part beam bottom across Vierendeel girder, and every group of external prestressing steels are arranged in the tensioning end structure of span centre after being turned to by respective transfer, and tensioning end structure carries out overlap joint and tensioning to two groups of external prestressing steels using annular anchorage；And often across Vierendeel girder, only a tensioning end structure is arranged in beam bottom lower section in the middle, to effectively reduce the quantity of tensioning end structure.In addition, stretching end structure setting will not only be occupied the use space above flooring or roofing in often across the bottom part down of Vierendeel girder, but also when external prestressing installation, do not need to punch to floorboard or roof boarding；And when can relax during presstressed reinforcing steel use in vitro, presstressed reinforcing steel is carried out to mend tensioning or replacement.
Description
Technical field
The utility model relates to construction engineering technical field more particularly to a kind of external prestressing strengthening concrete frame beams
Structure.
Background technique
Presstressed reinforcing steel is arranged in inside beams of concrete i.e. conventional prestressing force, is arranged in other than beams of concrete and answers in advance in vitro
Power.External prestressing strengthening is the method integrally reinforced using additional external prestressing steels to structural elements or structure,
Feature is to be distributed and reduce original structure stress level by applying prestressing force means change original structure internal force, eliminates general reinforcing knot
Specific stress, response lag phenomenon in structure, after enabling plus part are more preferably worked together with original structure, the overall carrying of structure
Ability is remarkably improved.
However, external prestressing strengthening technology is applied not too much more in construction projects at present, main cause has:
1) floorboard or roof boarding or more need to be arranged in prestressing force pull end, and the normal use function of building is influenced after reinforcing
Energy；
2) external prestressing steels are fold-line-shaped, and loss of prestress is larger, and external prestressing steels single span arrangement also needs both ends
It draws, stretch-draw node is more；When multispan is continuously arranged, external prestressing steels need to carry out overlap joint tensioning, and stretch-draw node construction is complicated；
3) when external prestressing steels installation positioning, floorboard or roof boarding need to punch, and influence floor where building reinforcement
Normal usage function can also destroy the water-proof system of roofing when for roof boarding；
4) benefit tensioning can not be carried out when relaxation during external prestressing steels use.
Utility model content
For the technological deficiency of existing external prestressing strengthening, the utility model provides a kind of external prestressing strengthening coagulation
A prestressed stretch-draw end structure often need to be only arranged in native frame beam structure across Vierendeel girder, and tensioning end structure is arranged in Vierendeel girder
Bottom not only simplifies stretching end structure node construction, reduces stretching end number of structures, and is not take up floorboard, roofing
The construction area of plate, does not influence building using function, and when external prestressing installation, floorboard or roof boarding are also not required to out
Hole；Also, external prestressing steels can also multispan continuously arrange, reinforce it is high-efficient；In addition, can also be carried out when Relaxation of prestressing
Tensioning or replacement external prestressing steels etc. are mended, consolidation effect is good.
In order to solve the above technical problems, the utility model provides the following technical solutions:
A kind of external prestressing strengthening concrete frame beam structure, including at least two groups external prestressing steels, stretching end knot
Structure, fixed end structure and transfer, the stretching end structure are located at below the often middle part beam bottom across Vierendeel girder, the stretching end
Structure carries out overlap joint and tensioning to two groups of external prestressing steels using annular anchorage, one end of two groups of external prestressing steels respectively from
Opposite direction is arranged in tensioning end structure, the other end of two groups of external prestressing steels be anchored on fixed end structure respectively or
It is arranged at the adjacent frame column across between Vierendeel girder of person's drawing-in and after the beam vertical with Vierendeel girder and is located at neighbour across in Vierendeel girder
In tensioning end structure below portion's beam bottom, every group of external prestressing steels are turned to by respective transfer, the steering
Device is set to the Vierendeel girder bottom between tensioning end structure and fixed end structure or is set to tensioning end structure and frame column
Turn to through-hole between Vierendeel girder bottom.
Preferably, in above-mentioned external prestressing strengthening concrete frame beam structure, the external prestressing steels are used
Non-bending steel cable or epoxy coating strand.
Preferably, in above-mentioned external prestressing strengthening concrete frame beam structure, the tensioning of external prestressing steels is adopted
Angle-changing extension mode is taken, the side of the tensioning end structure is successively arranged angle diverter and stretch-draw jack.
Preferably, in above-mentioned external prestressing strengthening concrete frame beam structure, the annular anchorage includes one piece
It is provided with the anchor slab and the mating intermediate plate being set in taper hole that number is identical but taper hole is contrary, can be realized two groups of phase negative sides
To external prestressing steels reeve and tensioning.
Preferably, in above-mentioned external prestressing strengthening concrete frame beam structure, in two groups of external prestressing steels
One group of external prestressing steels is arranged in the middle part of anchor slab and the presstressed reinforcing steel as leading tensioning, and another group of external prestressing steels are worn
Set on the perimeter of anchor slab.
Preferably, in above-mentioned external prestressing strengthening concrete frame beam structure, fixing end structure is located at Vierendeel girder
Cross section the above position of natural axis.
Preferably, in above-mentioned external prestressing strengthening concrete frame beam structure, every group of external prestressing steels are divided into
Two beam presstressed reinforcing steels, two beam presstressed reinforcing steels are set to the two sides of Vierendeel girder, and one end of two beam presstressed reinforcing steels is after transfer
Converge and be arranged in tensioning end structure, the other end of two beam presstressed reinforcing steels is anchored in frame after transfer turns to respectively
The adjacent frame across between Vierendeel girder of drawing-in is distinguished on the corresponding fixed end structure of beam two sides or after transfer turns to
It is arranged at column and after the beam vertical with Vierendeel girder in the adjacent tensioning end structure across Vierendeel girder.
Preferably, in above-mentioned external prestressing strengthening concrete frame beam structure, every beam external prestressing steels include
Two external prestressing steels, four external prestressing steels for being arranged in same group in the middle part of anchor slab are distributed in the vertex of a square
On, four external prestressing steels for being arranged in another group of the perimeter of anchor slab are distributed on a rectangular vertex, and institute
It is parallel with the rectangular center coincidence and sideline to state square, square is located at rectangular inside.
Preferably, described adjacent across between Vierendeel girder in above-mentioned external prestressing strengthening concrete frame beam structure
Frame column at and the beam vertical with Vierendeel girder on open up cross through hole, and casing is set in through-hole, the both ends of described sleeve pipe
Face and the two sides of the beam vertical with Vierendeel girder flush, and steering block, the steering block is respectively set in the both ends of described sleeve pipe
It is individually fixed on the adjacent frame column across between Vierendeel girder, described sleeve pipe has the sleeve through hole of a perforation, the steering
Block has the steering block through-hole of a perforation, and the bottom of the steering block through-hole is by being laterally away from casing side direction gradually close to casing
It reduces, described sleeve pipe through-hole combines to form steering through-hole with two steering block through-holes.
Preferably, in above-mentioned external prestressing strengthening concrete frame beam structure, the fixed end structure includes holding
Pressing plate, extruding anchor and oblique support plate, the bearing plate are fixedly connected by fixing end steel member with Vierendeel girder, the bearing diagonal
The lower end of plate and fixing end steel member weld, and upper end and bearing plate weld, the external prestressing steels successively drawing-in oblique support plate
And be anchored in extruding anchor after bearing plate, it opens up in the oblique support plate and the bearing plate and is worn for external prestressing steels respectively
The through-hole in same level height more.
By techniques disclosed above scheme it is found that the beneficial effects of the utility model are as follows:
External prestressing strengthening concrete frame beam structure provided by the utility model, on the one hand, often only exist across Vierendeel girder
One tensioning end structure is set below its middle part beam bottom, and the tensioning end structure is using annular anchorage to two groups of external prestressing steels
Overlap joint and tensioning are carried out, to effectively reduce the quantity of tensioning end structure, and simplifies the construction of tensioning end structure.It is another
Stretching end structure setting, across the bottom part down of Vierendeel girder, will not be occupied floorboard or roofing in often by aspect, the utility model
Use space above plate does not influence building and does not need to punch to floorboard or roof boarding using function, and when construction,
It avoids impacting the water-proof system using function and flooring or roofing of building.In another aspect, the utility model will be opened
Pull end structure setting, across the bottom part down of Vierendeel girder, will not occupy floorboard or roof boarding space above, therefore body in often
Working length needed for External prestressed muscle can reserve tensioning, thus during presstressed reinforcing steel use when relaxation, it can be to answering in advance
Power muscle is carried out mending tensioning or be replaced.Also, external prestressing steels can also multispan continuously arrange, reinforce it is high-efficient.
Detailed description of the invention
Fig. 1 is an embodiment of the present invention single span Vierendeel girder external prestressing strengthening floor plan.
Fig. 2 is an embodiment of the present invention single span Vierendeel girder external prestressing strengthening elevation.
Fig. 3 is the 1-1 cross-sectional view of Fig. 1.
Fig. 4 is the structural schematic diagram of the fixation end structure of an embodiment of the present invention.
Fig. 5 is that an embodiment of the present invention two bridgees across the above Vierendeel girder external prestressing strengthening floor plan.
Fig. 6 is that an embodiment of the present invention two bridgees across the above Vierendeel girder external prestressing strengthening elevation.
In figure: the fixed end structure of 1- external prestressing steels, 2- tensioning end structure, 21- anchor slab, 3-, 31- bearing plate, 32- are squeezed
Press anchor, 33- fixing end steel member, 34- oblique support plate, 4- transfer, 5- Vierendeel girder, 6- frame column, 7- casing, 71- casing
Beam through-hole, 8- steering block, 81- steering block through-hole, 9- angle diverter, 10- stretch-draw jack, 11- vertical with Vierendeel girder.
Specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.According to following explanation and
The advantages of claims, the utility model and feature will become apparent from.It below will be by cited embodiment combination attached drawing, in detail
Illustrate the technology contents and feature of the utility model.Need in addition it illustrate, attached drawing is all made of very simplified form and makes
With non-accurate ratio, the purpose of the utility model embodiment is only aided in illustrating to convenience, lucidly.For sake of convenience, under
"upper" described in the text, "lower" are consistent with the upper and lower direction of attached drawing, but this can't be the limit of technical solutions of the utility model
System.
Fig. 1 to Fig. 6 is please referred to, present embodiment discloses a kind of external prestressing strengthening concrete frame beam structures, including
At least two groups external prestressing steels 1, tensioning end structure 2, fixed end structure 3 and transfer 4, the tensioning end structure 2 are located at
Often below the middle part beam bottom across Vierendeel girder 5, the tensioning end structure 2 carries out two groups of external prestressing steels 1 using annular anchorage
Overlap joint and tensioning, one end of two groups of external prestressing steels 1 are arranged in tensioning end structure 2 from opposite direction respectively, two groups of bodies
The other end of External prestressed muscle 1 be anchored on fixed end structure 3 respectively or the adjacent frame column across between Vierendeel girder 5 of drawing-in at
And it is arranged in after the beam 11 vertical with Vierendeel girder in the tensioning end structure 2 being located at below the adjacent middle part beam bottom across Vierendeel girder 5, every group
External prestressing steels 1 are turned to by respective transfer 4, and the transfer 4 is set to tensioning end structure 2 and fixes
5 bottom of Vierendeel girder between end structure 3 or the Vierendeel girder 5 turned between through-hole for being set to tensioning end structure 2 and frame column 6
Bottom.
On the one hand, presstressed reinforcing steel single span arrangement also needs both ends tensioning compared to the prior art, and stretch-draw node is more；Multispan connects
When continuous arrangement, presstressed reinforcing steel needs to carry out overlap joint tensioning, and stretch-draw node construction is complicated；The external prestressing strengthening of the present embodiment is mixed
Solidifying soil frame beam structure, often across Vierendeel girder 5, only a tensioning end structure 2, the tensioning end structure 2 is arranged in beam bottom lower section in the middle
Overlap joint and tensioning are carried out to two groups of external prestressing steels 1 using annular anchorage, to effectively reduce the number of tensioning end structure 2
Amount, and simplify the construction of tensioning end structure 2.
On the other hand, floorboard or roof boarding or more need to be arranged in external prestressing stretching end compared to the prior art, and
When presstressed reinforcing steel installs positioning, floorboard or roof boarding need to punch, and floor building is using function where influencing reinforcement, and works as and be
When roof boarding, the water-proof system of roofing can be also destroyed；The external prestressing strengthening concrete frame beam structure of the present embodiment will be opened
Pull end structure 2 is set to the bottom part down often across Vierendeel girder 5, will not occupy floorboard or roof boarding space above, not shadow
Ring building and use function, and do not need to punch to floor or roof boarding, avoid use function to building and flooring or
The water-proof system of person's roofing impacts.
In another aspect, since prestressed stretch-draw needs to reserve certain tension operation length, conventional method tensioning end structure 2
It protrudes more than flooring, does not allow to reserve, otherwise occupy more floor space, therefore in the prior art during presstressed reinforcing steel use
When relaxation, benefit tensioning can not be carried out；The external prestressing strengthening concrete frame beam structure of the present embodiment, by tensioning end structure 2
It is set to the bottom part down often across Vierendeel girder 5, floorboard or roof boarding space above will not be occupied, therefore presstressed reinforcing steel can
With working length needed for reserved tensioning, to can carry out mending to presstressed reinforcing steel and open during presstressed reinforcing steel use when relaxation
It draws or is replaced.
For single span Vierendeel girder external prestressing strengthening, Fig. 1 to Fig. 2 is please referred to, the tensioning end structure 2 is using annular anchor
Tool carries out overlap joint to two groups of external prestressing steels 1 and tensioning, one end of two groups of external prestressing steels 1 are worn from opposite direction respectively
In tensioning end structure 2, the other end of two groups of external prestressing steels 1 is anchored in respectively on fixed end structure 3, and every group pre- in vitro
Stress rib 1 is turned to by respective transfer 4, and the transfer 4 is set to tensioning end structure 2 and fixed end structure
Between 3.
The above Vierendeel girder external prestressing strengthening is bridgeed across for two, please refers to Fig. 5 to Fig. 6, the tensioning end structure 2 uses
Annular anchorage carries out overlap joint and tensioning to two groups of external prestressing steels 1, and one end of two groups of external prestressing steels 1 is respectively from opposite
Direction is arranged in tensioning end structure 2, the other end of two groups of external prestressing steels 1 be anchored on fixed end structure 3 respectively or
It is arranged in positioned at adjacent at the adjacent frame column across between Vierendeel girder 5 of drawing-in and after the beam 11 vertical with Vierendeel girder across Vierendeel girder 5
Middle part beam bottom below tensioning end structure 2 in, every group of external prestressing steels 1 are turned to by respective transfer 4, institute
State 5 bottom of Vierendeel girder or be set to stretching end knot that transfer 4 is set between tensioning end structure 2 and fixed end structure 3
5 bottom of Vierendeel girder of structure 2 and frame column 6 turned between through-hole.
Preferably, in above-mentioned external prestressing strengthening concrete frame beam structure, the transfer 4 is to be fixed on
The semicylinder of 5 bottom of Vierendeel girder.By the way that the transfer 4 of structure as above is arranged, guarantee smooth turn here of body presstressed reinforcing steel 1
To, make external prestressing steels 1 formed it is advantageous to structure linear.
Influence is blocked by another group of presstressed reinforcing steel due to carrying out tensioning to one group of presstressed reinforcing steel, tensioning thousand can not be installed
Jin top carries out tensioning, and therefore, in the present embodiment, angle-changing extension mode, the stretching end are taken in the tensioning of external prestressing steels 1
The side of structure 2 is successively arranged angle diverter 9 and stretch-draw jack 10, will be answered in advance in vitro by the way that angle diverter 9 is arranged
Power muscle 1 carries out tensioning after drawing.
Preferably, in above-mentioned external prestressing strengthening concrete frame beam structure, the annular anchorage includes one piece
Be provided with the anchor slab 21 and the mating intermediate plate being set in taper hole that number is identical but taper hole is contrary, can be realized two groups it is opposite
The external prestressing steels 1 in direction reeve and tensioning.Only one group of external prestressing steels in tensioning end structure 2 described in tensioning when construction
1, continuing to increase with stretching force and this group of 1 elongation of external prestressing steels in stretching process, annular anchorage is gradually to tensioning
The reverse movement of power, so that the tensioning of another group of external prestressing steels 1 in a disguised form be driven to carry out to another group of external prestressing steels 1
Tensioning, when stretching force reaches design value and acts on that two groups of 1 pulling force of opposite direction presstressed reinforcing steel are equal on annular anchorage, annular
Anchorage stress reaches balance and no longer moves, and is anchored, tensioning terminates.
In order to enable external prestressing stepless action is on Vierendeel girder 5, it is preferred that mixed in above-mentioned external prestressing strengthening
In solidifying soil frame beam structure, every group of external prestressing steels 1 are divided into two beam presstressed reinforcing steels, and two beam presstressed reinforcing steels are set to Vierendeel girder 5
Two sides, fixed end structure 3 is symmetrically disposed on the two sides of Vierendeel girder 5, and the steering through-hole on frame column 6 is symmetrically disposed on frame
Set a roof beam in place 5 two sides, one end of two beam presstressed reinforcing steels converges after transfer 4 and is arranged in tensioning end structure 2, and two beams are pre-
On the corresponding fixed end structure 3 that the other end of stress rib is anchored in 5 two sides of Vierendeel girder after the steering of transfer 4 respectively or
Distinguish at the adjacent frame column across between Vierendeel girder 5 of drawing-in and after the beam 11 vertical with Vierendeel girder after the steering of transfer 4
It is arranged in the adjacent tensioning end structure 2 across Vierendeel girder 5.
Preferably, in above-mentioned external prestressing strengthening concrete frame beam structure, in two groups of external prestressing steels 1
One group of external prestressing steels 1 is arranged in the middle part of anchor slab 21 and the presstressed reinforcing steel as leading tensioning, another group of external prestressing
Muscle 1 is arranged in the perimeter of anchor slab 21.The external prestressing steels 2 of leading tensioning are set to the middle part of anchor slab 21, can be incited somebody to action
The external prestressing steels 1 of tensioning are put together as far as possible, to make the structure of angle diverter 9 and stretch-draw jack 10 more
Step up to gather.Specifically, every beam external prestressing steels 1 wrap in the external prestressing strengthening concrete frame beam structure of embodiment
Two external prestressing steels 1 are included, same group of four external prestressing steels 1 for being arranged in 21 middle part of anchor slab are distributed in a square
Vertex on, four external prestressing steels 1 for being arranged in another group of the perimeter of anchor slab 21 are distributed in a rectangular top
On point, and the square is overlapped with the rectangular center and sideline is parallel, and square is located at rectangular inside.
Preferably, in above-mentioned external prestressing strengthening concrete frame beam structure, fixed end structure 3 is located at Vierendeel girder
The above position of the natural axis of 5 cross section, to improve the stressed effect of external prestressing steels 1.
Preferably, in above-mentioned external prestressing strengthening concrete frame beam structure, external prestressing steels 1 are using without viscous
Tie steel strand wires or epoxy coating strand.
Preferably, described adjacent across between Vierendeel girder 5 in above-mentioned external prestressing strengthening concrete frame beam structure
Frame column 6 at and the beam 11 vertical with Vierendeel girder on open up cross through hole, and in cross through hole be arranged sleeve 7, it is described
The two sides of the both ends of the surface of casing 7 and the beam 11 vertical with Vierendeel girder flush, and steering is respectively set in the both ends of described sleeve pipe 7
Block 8, the steering block 8 are individually fixed on the adjacent frame column 6 across between Vierendeel girder 5, and described sleeve pipe 7 has a perforation
Sleeve through hole 71, the steering block 8 have the steering block through-hole 81 of a perforation, and the bottom of the steering block through-hole 81 is by close to set
Pipe 7 is laterally away from 7 side direction of casing and gradually decreases, and described sleeve pipe through-hole 71 combines to form the steering with two steering block through-holes 81
Through-hole.
Preferably, the fixed end structure includes holding in above-mentioned external prestressing strengthening concrete frame beam structure
Pressing plate 31, extruding anchor 32 and oblique support plate 34, the bearing plate 31 connect by the way that fixing end steel member 33 and Vierendeel girder 5 are fixed
It connects, the lower end of the oblique support plate 34 and fixing end steel member 33 weld, and upper end and bearing plate 31 weld, the external prestressing
Muscle 1 is successively anchored in extruding anchor 32 after drawing-in oblique support plate 34 and bearing plate 31, and extruding anchor 32 is by being sheathed on prestressing force
The sleeve of muscle end is squeezed by dedicated extruded equipment, so that presstressed reinforcing steel of holding with a firm grip after squeezing sleeve generation plastic deformation, described
The through-hole in same level height passed through for external prestressing steels 1 is opened up respectively on oblique support plate 34 and the bearing plate.
The stability of bearing plate not only can be improved by the way that oblique support plate 34 is arranged, and external prestressing steels 1 can be made to anchor into
It is in horizontality before extruding anchor, improves anchoring effect.
In conclusion external prestressing strengthening concrete frame beam structure provided by the utility model, only across Vierendeel girder 5 often
A tensioning end structure 2 only is set below its middle part beam bottom, the tensioning end structure 2 is using annular anchorage to two groups of external prestressings
Muscle 1 carries out overlap joint and tensioning, to effectively reduce the quantity of tensioning end structure 2, and simplifies the structure of tensioning end structure 2
It makes.In addition, tensioning end structure 2 is set to the bottom part down often across Vierendeel girder 5 by the utility model, will not occupy floorboard or
Roof boarding space above does not influence building using function, and does not need to punch to floorboard or roof boarding, avoids pair
The water-proof system using function and floorboard or roofing of building impacts.Furthermore the utility model is by tensioning end structure 2
It is set to the bottom part down often across Vierendeel girder 5, floorboard or roof boarding space above, therefore external prestressing will not be occupied
Working length needed for muscle can reserve tensioning, to can be carried out to presstressed reinforcing steel when relaxation during presstressed reinforcing steel use
It mends tensioning or is replaced.In addition, external prestressing steels can also multispan continuously arrange, reinforce it is high-efficient.
Foregoing description is only the description to the utility model preferred embodiment, not to any limit of the scope of the utility model
Fixed, any change, the modification that the those of ordinary skill in the utility model field does according to the disclosure above content belong to right and want
Seek the protection scope of book.
Claims (10)
1. a kind of external prestressing strengthening concrete frame beam structure, which is characterized in that including at least two groups external prestressing steels,
Tensioning end structure, fixed end structure and transfer, the stretching end structure are located at below the often middle part beam bottom across Vierendeel girder, institute
It states tensioning end structure and overlap joint and tensioning is carried out to two groups of external prestressing steels using annular anchorage, the one of two groups of external prestressing steels
End is arranged in tensioning end structure from opposite direction respectively, and the other end of two groups of external prestressing steels is anchored in fixing end respectively
It is arranged in structure or at the adjacent frame column across between Vierendeel girder of drawing-in and after the beam vertical with Vierendeel girder and is located at neighbour across frame
In the tensioning end structure below the beam bottom of middle part set a roof beam in place, every group of external prestressing steels are turned to by respective transfer,
The transfer is set to the Vierendeel girder bottom between tensioning end structure and fixed end structure or is set to tensioning end structure
With the Vierendeel girder bottom of frame column turned between through-hole.
2. external prestressing strengthening concrete frame beam structure as described in claim 1, which is characterized in that described to answer in advance in vitro
Power muscle uses non-bending steel cable or epoxy coating strand.
3. external prestressing strengthening concrete frame beam structure as described in claim 1, which is characterized in that external prestressing steels
Tensioning take angle-changing extension mode, the side of the tensioning end structure is successively arranged angle diverter and stretch-draw jack.
4. external prestressing strengthening concrete frame beam structure as described in claim 1, which is characterized in that the annular anchorage
It is provided with the anchor slab and the mating intermediate plate being set in taper hole that number is identical but taper hole is contrary including one piece, can be realized two
Group opposite direction external prestressing steels reeve and tensioning.
5. external prestressing strengthening concrete frame beam structure as described in claim 1, which is characterized in that two groups are answered in advance in vitro
One group of external prestressing steels in power muscle are arranged in the middle part of anchor slab and the presstressed reinforcing steel as leading tensioning, and another group pre- in vitro
Stress rib is arranged in the perimeter of anchor slab.
6. external prestressing strengthening concrete frame beam structure as described in claim 1, which is characterized in that fixing end structure bit
The above position of natural axis in the cross section of Vierendeel girder.
7. external prestressing strengthening concrete frame beam structure as described in claim 1, which is characterized in that every group is answered in advance in vitro
Power muscle is divided into two beam presstressed reinforcing steels, and two beam presstressed reinforcing steels are set to the two sides of Vierendeel girder, and one end of two beam presstressed reinforcing steels is by turning
Converge after to device and be arranged in tensioning end structure, the other end of two beam presstressed reinforcing steels distinguishes anchor after transfer turns to
Be fixed on the corresponding fixed end structure of Vierendeel girder two sides or distinguish after transfer turns to drawing-in it is adjacent across Vierendeel girder it
Between frame column at and the beam vertical with Vierendeel girder after be arranged in the adjacent tensioning end structure across Vierendeel girder.
8. external prestressing strengthening concrete frame beam structure as claimed in claim 7, which is characterized in that every beam is answered in advance in vitro
Power muscle includes two external prestressing steels, and four external prestressing steels for being arranged in same group in the middle part of anchor slab are distributed in a pros
On the vertex of shape, four external prestressing steels for being arranged in another group of the perimeter of anchor slab are distributed in a rectangular vertex
On, and the square is overlapped with the rectangular center and sideline is parallel, square is located at rectangular inside.
9. external prestressing strengthening concrete frame beam structure as described in claim 1, which is characterized in that described adjacent across frame
Cross through hole is opened up at frame column between setting a roof beam in place and on the beam vertical with Vierendeel girder, and casing is set in through-hole, the set
The two sides of the both ends of the surface of pipe and the beam vertical with Vierendeel girder flush, and steering block is respectively set in the both ends of described sleeve pipe, institute
Steering block to be stated to be individually fixed on the adjacent frame column across between Vierendeel girder, described sleeve pipe has the sleeve through hole of a perforation,
The steering block has the steering block through-hole of a perforation, and the bottom of the steering block through-hole is by being laterally away from casing side close to casing
Direction gradually decreases, and described sleeve pipe through-hole combines to form steering through-hole with two steering block through-holes.
10. the external prestressing strengthening concrete frame beam structure as described in any one of claim 1-9, feature exist
In the fixed end structure includes bearing plate, extruding anchor and oblique support plate, and the bearing plate passes through fixing end steel member and frame
It sets a roof beam in place and is fixedly connected, the lower end of the oblique support plate and fixing end steel member weld, and upper end and bearing plate weld, described external pre-
Stress rib is successively anchored in extruding anchor after drawing-in oblique support plate and bearing plate, in the oblique support plate and the bearing plate point
The through-hole in same level height passed through for external prestressing steels is not opened up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821082839.4U CN208586817U (en) | 2018-07-09 | 2018-07-09 | A kind of external prestressing strengthening concrete frame beam structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821082839.4U CN208586817U (en) | 2018-07-09 | 2018-07-09 | A kind of external prestressing strengthening concrete frame beam structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208586817U true CN208586817U (en) | 2019-03-08 |
Family
ID=65540462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821082839.4U Withdrawn - After Issue CN208586817U (en) | 2018-07-09 | 2018-07-09 | A kind of external prestressing strengthening concrete frame beam structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208586817U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108708498A (en) * | 2018-07-09 | 2018-10-26 | 上海建工集团股份有限公司 | A kind of external prestressing strengthening concrete frame beam structure and its construction method |
| CN110805025A (en) * | 2019-11-19 | 2020-02-18 | 上海建工集团股份有限公司 | Rib distribution type of cast-in-place prestressed underground diaphragm wall and tensioning method thereof |
-
2018
- 2018-07-09 CN CN201821082839.4U patent/CN208586817U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108708498A (en) * | 2018-07-09 | 2018-10-26 | 上海建工集团股份有限公司 | A kind of external prestressing strengthening concrete frame beam structure and its construction method |
| CN108708498B (en) * | 2018-07-09 | 2023-12-05 | 上海建工集团股份有限公司 | External prestress reinforced concrete frame beam structure and construction method thereof |
| CN110805025A (en) * | 2019-11-19 | 2020-02-18 | 上海建工集团股份有限公司 | Rib distribution type of cast-in-place prestressed underground diaphragm wall and tensioning method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108708498A (en) | A kind of external prestressing strengthening concrete frame beam structure and its construction method | |
| CN2797476Y (en) | Mixed jointing node of assembled concrete frame structure beam column | |
| CN108560423B (en) | Construction method of common steel bar and finish-rolled twisted steel bar mixed reinforcement assembly pier | |
| WO2019149270A1 (en) | Assembled pier for mixed reinforcement of normal steel rebar and finished threaded steel bar | |
| CN207194146U (en) | Prestressing force assembly concrete frame joint attachment structure | |
| CN108193607B (en) | A kind of reinforce uses prefabricated PC truss and its construction method | |
| CN109653350B (en) | Mixed reinforcement embedded low-prestress dry beam column node and method | |
| CN208586817U (en) | A kind of external prestressing strengthening concrete frame beam structure | |
| CN110878535A (en) | Diagonal tension load-adjusting system for reinforcing rigid truss bridge and reinforcing method thereof | |
| CN113107088A (en) | Prestressed full-dry type connection assembly type concrete frame beam column joint | |
| CN107059593A (en) | A kind of interior suspension cable compound section bridge and its construction method | |
| CN110409283B (en) | Rib-free prestressed self-maintenance composite beam based on slow-bonding prestressed UHPC permanent formwork and construction method | |
| CN108678225A (en) | The built-in steel plate combined shear wall of built-in presstressed reinforcing steel steel pipe concrete frame and the practice | |
| CN108316130A (en) | A kind of assembled pier of regular reinforcement and finish rolling deformed bar hybrid reinforcement | |
| CN110924522B (en) | Steel plate interface connecting structure and connecting method for reinforced concrete beam and column | |
| CN208777758U (en) | A kind of steel roof truss lower boom reinforcing device | |
| CN217268348U (en) | Hybrid prestressed composite beam | |
| CN107245959B (en) | A kind of the oblique pull ruggedized construction and its construction method of double width continuous rigid frame bridge | |
| CN115369747A (en) | Self-resetting prefabricated assembled pier | |
| CN212404773U (en) | UHPC-NC mixed box girder and large-span rigid frame bridge | |
| CN201089978Y (en) | Transition connecting construction for steel construction and concrete structure | |
| CN211645962U (en) | Mixed connection's assembled concrete pier | |
| CN107142830A (en) | Steel pipe web prestressing force steel reinforced concrete combines main beam structure and construction method | |
| CN207974555U (en) | A kind of building structure strengthening device | |
| CN206902719U (en) | Preassembling support beam combines support system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190308 Effective date of abandoning: 20231205 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20190308 Effective date of abandoning: 20231205 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |