CN109339282A - A kind of precast reinforced concrete shear wall and coupling beam connecting joint structure and its construction method - Google Patents
A kind of precast reinforced concrete shear wall and coupling beam connecting joint structure and its construction method Download PDFInfo
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- CN109339282A CN109339282A CN201811371640.8A CN201811371640A CN109339282A CN 109339282 A CN109339282 A CN 109339282A CN 201811371640 A CN201811371640 A CN 201811371640A CN 109339282 A CN109339282 A CN 109339282A
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- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 69
- 230000008878 coupling Effects 0.000 title claims abstract description 44
- 238000010168 coupling process Methods 0.000 title claims abstract description 44
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 44
- 238000010276 construction Methods 0.000 title claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 claims description 31
- 239000010959 steel Substances 0.000 claims description 31
- 230000007246 mechanism Effects 0.000 claims description 29
- 230000003014 reinforcing effect Effects 0.000 claims description 16
- 239000011374 ultra-high-performance concrete Substances 0.000 claims description 15
- 239000011440 grout Substances 0.000 claims description 12
- 239000008267 milk Substances 0.000 claims description 8
- 210000004080 milk Anatomy 0.000 claims description 8
- 235000013336 milk Nutrition 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 6
- 210000003205 muscle Anatomy 0.000 claims description 5
- 230000006978 adaptation Effects 0.000 claims description 3
- 239000004567 concrete Substances 0.000 claims description 3
- 230000021715 photosynthesis, light harvesting Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
The invention discloses a kind of precast reinforced concrete shear walls and coupling beam connecting joint structure and its construction method, including a prefabricated reinforced concrete coupling beam and two precast reinforced concrete shear walls, the both ends of above-mentioned prefabricated reinforced concrete coupling beam form join domain with the rectangular notch of above-mentioned two precast reinforced concrete shear wall respectively.The present invention can shorten the construction period to big degree, simplify node construction operation, and improve the bearing capacity of node and the energy dissipation capacity of general frame, can operate in various building systems, have wide utilization prospect.
Description
Technical field
The invention belongs to building structure technology fields, and in particular to a kind of precast reinforced concrete shear wall is connect with coupling beam
Node structure and its construction method.
Background technique
Fabricated construction have high production efficiency, low energy consumption, it is environmentally protective the advantages that, research and development application greatly pushes
The development of building industrialization, is the important development direction of future architecture.In assembly concrete shear wall structure, shear wall is several
Whole horizontal forces are undertaken, so how to guarantee being reliably connected between precast concrete shear wall and coupling beam, there is structure
Preferable integral working, and can effectively transmit interlaminar shear, the bearing capacity of raising structure and anti-side rigidity is problem
It is crucial.Existing connection type is predominantly mechanically connected, sleeve grouting connects and is welded to connect, and steel concrete supporting is to pass through steel
The effect of the mechanical snap of muscle and connector, is transferred to another reinforcing bar for the power in a reinforcing bar, is a kind of effective connection shape
Formula；But the connection type not can guarantee the quality of connector in constructing at the scene, and reinforcing bar is matched with the connector of factory's preprocessing
Rate is low, it is difficult to ensure the stability of internal force conduction in reinforcing bar connection.Sleeve grouting connection is using internal with concavo-convex portion
Connected reinforcing bar is inserted by two sections, is then injected by cement, fine aggregate, swelling agent and subtracted by grouter by high-strength circular sleeve
The microdilatancy high strength grout of the compositions such as aqua, after grouting hardening, sleeve, reinforcing bar are securely joined with integral.But
The closing of practice of construction process middle sleeve is unfavorable for quality inspection, and docking sleeve is complicated, and grouting quantity is unable to control, so that constructing
Journey must take a substantial amount of time and cost of labor.Welded connecting is by reinforcing bar with electric welding equipment along axial spreading or cross-join,
It is a kind of common connection type；But the reinforcing bar after welding, it may appear that internal stress non-uniform phenomenon causes reinforcing bar brittleness to become
Greatly, and when field operation, needs special equipment, and energy consumption is big, environment easy to pollute, to the more demanding of construction environment.
There is the problems such as construction is complicated, power transmission is indefinite, working procedure is more more in tradition connecting node mode described above.
This just needs to develop the new precast and assembled reinforced connecting node convenient for connection, the advantages of to give full play to fabricated construction.
Summary of the invention
It is an object of the invention to overcome prior art defect, a kind of precast reinforced concrete shear wall is provided and coupling beam connects
Connect node structure.
Another object of the present invention is to provide above-mentioned precast reinforced concrete shear walls and coupling beam connecting joint structure
Construction method.
Technical scheme is as follows:
A kind of precast reinforced concrete shear wall and coupling beam connecting joint structure, including
One prefabricated reinforced concrete coupling beam, the end face at both ends all have several end horizontal protruding bars, both ends
Upper surface all has the upward protruding bar in several ends, and the lower surface at both ends all has the downward protruding bar in several ends；
Two precast reinforced concrete shear walls all have a rectangular notch to be adapted to above-mentioned prefabricated reinforced concrete respectively and connect
The both ends of beam, the upper roof of the rectangular notch have with above-mentioned several upward protruding bars in end correspondingly several top surfaces to
Lower protruding bar, lower bottom wall have and above-mentioned several downward protruding bars in end several bottom surfaces overhanging steel upwards correspondingly
Muscle, side wall have equally distributed several sidewall horizontal protruding bars under upper, wherein the sidewall horizontal protruding bar at middle part
It is corresponded with above-mentioned several end horizontal protruding bars, remaining sidewall horizontal protruding bar extends to and above-mentioned several top surfaces
The upward protruding bar intersection of downward protruding bar and above-mentioned bottom surface；
Above-mentioned end horizontal protruding bar, the upward protruding bar in end, the downward protruding bar in end, top surface overhanging steel downwards
The diameter of muscle, the upward protruding bar in bottom surface and sidewall horizontal protruding bar is all the same；
The both ends of above-mentioned prefabricated reinforced concrete coupling beam are lacked with the rectangle of above-mentioned two precast reinforced concrete shear wall respectively
Mouth forms join domain, and several upward protruding bars in end are overlapped and used several with the downward protruding bar mutual dislocation in several top surfaces
Stirrup wrapping, several downward protruding bars in end and the upward protruding bar mutual dislocation in several bottom surfaces overlap and use several stirrup packets
Around and its lower end directly contact with the bottom wall of rectangular notch, outside the sidewall horizontal at several end horizontal protruding bars and above-mentioned middle part
It stretches reinforcing bar mutual dislocation to overlap and several stirrups is used to wrap, overlapped that length is not less than each above-mentioned overhanging steel for above-mentioned mutual dislocation
8 times of the diameter of muscle, and the valid bonding length of each above-mentioned protruding bar is not less than 25 times of its diameter；Above-mentioned join domain
Ultra-high performance concrete has been poured, the both ends of prefabricated reinforced concrete coupling beam and two precast reinforced concrete shear walls have been linked to be
One, what the top of the rectangular notch of each precast reinforced concrete shear wall offered the connection join domain at least one goes out
Channel is starched, to guarantee that it is closely knit that ultra-high performance concrete pours.
In a preferred embodiment of the invention, the downward protruding bar in several ends and several bottom surfaces are outer upwards
Stretch 10 times of diameter of mutual dislocation overlapped the length of reinforcing bar not less than the downward protruding bar in the end.
In a preferred embodiment of the invention, the upward protruding bar in several ends and several top surfaces are outer downwards
Stretch 10 times of diameter of mutual dislocation overlapped the length of reinforcing bar not less than the upward protruding bar in the end.
In a preferred embodiment of the invention, the side wall of several the end horizontal protruding bars and the middle part
10 times of diameter of the mutual dislocation of horizontal protruding bar overlapped length not less than the end horizontal protruding bar.
In a preferred embodiment of the invention, it is straight to be not less than it for the valid bonding length of each protruding bar
30 times of diameter.
The construction method of above-mentioned precast reinforced concrete shear wall and coupling beam connecting joint structure, includes the following steps:
(1) be prefabricated in the factory the prefabricated reinforced concrete coupling beam and two precast reinforced concrete shear walls, has reserved institute
Pulp channel is stated, and ensures that the extension of each protruding bar and valid bonding length are met the requirements；
(2) after being installed in place two precast reinforced concrete shear wall, the prefabricated reinforced concrete coupling beam is hung
Enter corresponding position so that its both ends is corresponding with rectangular notch adaptation, wherein the lower end of the downward protruding bar in the end and square
The bottom wall of v notch v directly contacts, to support and position the prefabricated reinforced concrete coupling beam, then by each protruding bar into
The corresponding mutual dislocation of row overlaps and several stirrups is used to wrap；
(3) a corresponding rectangular notch, with two rectangle steel forms and the two corresponding join domains of L-type steel form for seal,
Several through-holes are opened in advance the top and lower part of the two rectangles steel form and two L-type steel templates are each, it will be several by high-strength screw
The two rectangles steel form and two L-type steel templates are fixed on the prefabricated reinforced concrete coupling beam and the prefabricated reinforced concrete is cut
The outside wall surface of power wall, wherein the middle part of a rectangle steel form is equipped with a grouting mouth, which is equipped with a grouting and is connected and fixed
Mechanism；
(4) grouting mechanism is connected and fixed mechanism with grouting to be connected, by being in the milk, mechanism is poured into the join domain
Ultra-high performance concrete stops pouring when the uniform grout in above-mentioned pulp channel, and with pulp channel of sealing with wax, and removes and fills
Pulp grinder structure, and block the grouting mouth；
(5) it is conserved after pouring after reaching specified intensity to the ultra-high performance concrete, removes the rectangle punching block
Plate and L-type steel template,.
In a preferred embodiment of the invention, it includes being set to above grouting mouth that the grouting, which is connected and fixed mechanism,
One upper hopper chute, the gliding groove below grouting mouth and the hush panel being slidably arranged in the upper hopper chute and gliding groove, should
Grouting, which is connected and fixed mechanism, has a first state and one second state, when in the first state, hush panel closure grouting mouth,
When in the second state, hush panel makes mouth opening of being in the milk far from grouting mouth.
It is further preferred that the grouting mechanism includes a grout pipe, one end of the grout pipe is funnel-shaped, the other end
Edge extends outward to form end plate, and end plate sliding adapts in the upper hopper chute and gliding groove.
The beneficial effects of the present invention are:
1, the present invention avoids the complicated type of attachment of node in terms of construction, significantly accelerates shear wall-beam connection section
The construction speed of point.
2, from component quality, present invention employs ultra-high performance concretes to pour node, because itself
Compression strength is greater than 150Mpa, tensile strength is greater than 15Mpa, so plastic hinge primarily occur ins far in the case where earthquake is had an effect
On region beam from node, the ductility and energy dissipation capacity of frame structure are improved.
3, the present invention can shorten the construction period to big degree, simplify node construction operation, and improve the bearing capacity of node
It with the energy dissipation capacity of general frame, can operate in various building systems, there is wide utilization prospect.
Detailed description of the invention
Fig. 1 is the schematic perspective view of precast reinforced concrete shear wall of the invention.
Fig. 2 is the schematic perspective view of prefabricated reinforced concrete coupling beam of the invention.
Fig. 3 is the structural schematic diagram that the present invention does not pour ultra-high performance concrete.
Fig. 4 is the structural schematic diagram in work progress of the present invention.
Fig. 5 is the structural schematic diagram that grouting of the invention is connected and fixed mechanism.
Fig. 6 is the structural schematic diagram of grouting mechanism of the invention.
Specific embodiment
Technical solution of the present invention is further explained and described below by way of specific embodiment combination attached drawing.
A kind of precast reinforced concrete shear wall and coupling beam connecting joint structure, including a prefabricated reinforced concrete coupling beam 1
With two precast reinforced concrete shear walls 2.
As shown in Fig. 2, prefabricated reinforced concrete coupling beam 1, the end face at both ends all has several end horizontal protruding bars
11, the upper surface at both ends all has the upward protruding bar 12 in several ends, the lower surface at both ends all have several ends to
Lower protruding bar 13；
As shown in Figure 1, two precast reinforced concrete shear walls 2, it is above-mentioned pre- to be adapted to respectively to all have a rectangular notch 20
The upper roof at the both ends of reinforced concrete coupling beams 1 processed, the rectangular notch 20 has and above-mentioned several upward protruding bars 12 in end
One-to-one several downward protruding bars 22 in top surface, lower bottom wall have a pair of with above-mentioned several downward protruding bars 13 1 in end
The upward protruding bar 23 in several bottom surfaces answered, side wall have equally distributed several sidewall horizontal protruding bars 21 under upper,
Wherein the sidewall horizontal protruding bar 21 at middle part and above-mentioned several end horizontal protruding bars 11 correspond, remaining sidewall horizontal
Protruding bar 21 is extended to intersect with the upward protruding bar 23 of above-mentioned several downward protruding bars 22 in top surface and above-mentioned bottom surface；
Above-mentioned end horizontal protruding bar 11, the upward protruding bar 12 in end, the downward protruding bar 13 in end, top surface are downward
The diameter of protruding bar 22, the upward protruding bar 23 in bottom surface and sidewall horizontal protruding bar 21 is all the same；
As shown in figure 3, the both ends of above-mentioned prefabricated reinforced concrete coupling beam 1 are sheared with above-mentioned two prefabricated reinforced concrete respectively
The rectangular notch 20 of wall 2 forms join domain 3, several upward protruding bars 12 in end and downward 22 phase of protruding bar in several top surfaces
Mutual dislocation lap joint is simultaneously wrapped, several downward protruding bars 13 in end and upward 23 phase of protruding bar in several bottom surfaces with several stirrups 4
Mutual dislocation lap joint and with the wrapping of several stirrups 4 and its lower end is directly contacted with the bottom wall of rectangular notch 20, outside several end horizontals
21 mutual dislocation of sidewall horizontal protruding bar for stretching reinforcing bar 11 and above-mentioned middle part overlaps and several stirrups 4 is used to wrap, above-mentioned connection
Region 3 has poured ultra-high performance concrete, and the both ends of prefabricated reinforced concrete coupling beam 1 and two prefabricated reinforced concretes are sheared
Wall 2 is connected, and the compression strength of the ultra-high performance concrete is more than 150MPa, and tensile strength is more than 15MPa, can be in performance
Meet requirement of the connecting node to strength and stiffness；It opens on the top of the rectangular notch 20 of each precast reinforced concrete shear wall 2
Equipped at least pulp channel 24 for being connected to the join domain 3, to guarantee that it is closely knit that ultra-high performance concrete pours.
That overlapped is long for the mutual dislocation of the downward protruding bar 13 in several ends and the upward protruding bar 23 in several bottom surfaces
Degree is not less than 10 times of the diameter of the downward protruding bar 13 in the end.The upward protruding bar 12 in several ends and several tops
10 times of diameter of the mutual dislocation of protruding bar 22 overlapped length not less than the upward protruding bar 12 in the end downwards.
The mutual dislocation of several end horizontal protruding bars 11 and the sidewall horizontal protruding bar 21 at the middle part overlapped length
Not less than 10 times of the diameter of the end horizontal protruding bar 11.
The valid bonding length of each protruding bar is not less than 25 times (earthquake nonresistive constructions) of its diameter, it is preferred that
Not less than 30 times (anti-seismic structures) of its diameter.
As shown in figure 4, the construction method of above-mentioned precast reinforced concrete shear wall 2 and coupling beam connecting joint structure, including
Following steps:
(1) the prefabricated reinforced concrete coupling beam 1 that is prefabricated in the factory and two precast reinforced concrete shear walls 2, are reserved
The pulp channel 24, and ensure that the extension of each protruding bar and valid bonding length are met the requirements；
(2) after being installed in place two precast reinforced concrete shear wall 2, by the prefabricated reinforced concrete coupling beam 1
Corresponding position is hung in so that its both ends is corresponding with the adaptation of rectangular notch 20, wherein under the downward protruding bar 13 in the end
End is directly contacted with the bottom wall of rectangular notch 20, to support and position the prefabricated reinforced concrete coupling beam 1, then will be each described outer
Reinforcing bar is stretched to carry out corresponding mutual dislocation overlap joint and wrapped with several stirrups 4；
(3) a corresponding rectangular notch 20, closes corresponding bonding pad with two rectangle steel forms 7 and two L-type steel templates 6
Domain 3, the two rectangles steel form 7 and two L-type steel templates 6 top and lower part is each opens several through-holes in advance, pass through high-strength screw
Several two rectangles steel forms 7 and two L-type steel templates 6 are fixed on the prefabricated reinforced concrete coupling beam 1 and the pre-manufactured steel
The outside wall surface of reinforced concrete shear wall 2 is set on the grouting mouth 70 wherein the middle part of a rectangle steel form 7 is equipped with a grouting mouth 70
There is a grouting to be connected and fixed mechanism 71；
(4) grouting mechanism 8 is connected and fixed mechanism 71 with grouting to be connected, through grouting mechanism 8 into the join domain 3
Ultra-high performance concrete is poured, when above-mentioned 24 uniform grout of pulp channel, stops pouring, and with pulp channel of sealing with wax
24, grouting mechanism 8 is removed, and block the grouting mouth 70；
As shown in Figure 5 and Figure 6, it includes the upper hopper chute set on 70 top of grouting mouth that the grouting, which is connected and fixed mechanism 71,
711, the gliding groove 712 below grouting mouth 70 and the sealing being slidably arranged in the upper hopper chute 711 and gliding groove 712
Plate 713, the grouting are connected and fixed mechanism 71 with a first state and one second state, when in the first state, hush panel
713 closure grouting mouths 70, when in the second state, hush panel 713 make the opening of mouth 70 of being in the milk far from grouting mouth 70；Grouting mechanism
8 include a grout pipe 80, and one end of the grout pipe 80 is funnel-shaped, and the edge of the other end extends outward to form end plate 81, should
The sliding of end plate 81 adapts in the upper hopper chute 711 and gliding groove 712；
The internal diameter of grout pipe 80 is identical as the grouting diameter of mouth 70；
(4) end plate 81 for mechanism 8 of being in the milk is inserted into upper hopper chute 711 and gliding groove 712, along upper hopper chute 711 and gliding groove
712 push hush panel 713 open, and the mechanism 8 that makes to be in the milk is connected and fixed mechanism 71 with grouting and is connected, by mechanism 8 of being in the milk to the connection
Ultra-high performance concrete is poured in region 3, when above-mentioned 2412 uniform grout of pulp channel, stops pouring, and with sealing with wax
Pulp channel 2412 pushes hush panel 713 to eject the end plate 81 of grouting mechanism 8, makes 713 return of hush panel with plugging grouting mouth
70；
(5) it is conserved after pouring after reaching specified intensity to the ultra-high performance concrete, removes the rectangle punching block
Plate 7 and L-type steel template 6,.
The foregoing is only a preferred embodiment of the present invention, the range that the present invention that therefore, it cannot be limited according to is implemented, i.e.,
Equivalent changes and modifications made in accordance with the scope of the invention and the contents of the specification should still be within the scope of the present invention.
Claims (8)
1. a kind of precast reinforced concrete shear wall and coupling beam connecting joint structure, it is characterised in that: including
One prefabricated reinforced concrete coupling beam, the end face at both ends all have several end horizontal protruding bars, the upper table at both ends
Face all has the upward protruding bar in several ends, and the lower surface at both ends all has the downward protruding bar in several ends；
Two precast reinforced concrete shear walls all have a rectangular notch to be adapted to above-mentioned prefabricated reinforced concrete coupling beam respectively
Both ends, the upper roof of the rectangular notch is with several top surfaces are outer downwards correspondingly with above-mentioned several upward protruding bars in end
Stretch reinforcing bar, lower bottom wall has and above-mentioned several downward protruding bars in end upward protruding bar in several bottom surfaces correspondingly, side
Wall has equally distributed several sidewall horizontal protruding bars under upper, wherein the sidewall horizontal protruding bar at middle part with it is above-mentioned
Several end horizontal protruding bars correspond, remaining sidewall horizontal protruding bar extends to outer downwards with above-mentioned several top surfaces
Stretch the upward protruding bar intersection of reinforcing bar and above-mentioned bottom surface；
Above-mentioned end horizontal protruding bar, the upward protruding bar in end, the downward protruding bar in end, the downward protruding bar in top surface,
The diameter of the upward protruding bar in bottom surface and sidewall horizontal protruding bar is all the same；
The both ends of the above-mentioned prefabricated reinforced concrete coupling beam rectangular notch shape with above-mentioned two precast reinforced concrete shear wall respectively
At join domain, several upward protruding bars in end and the downward protruding bar mutual dislocation in several top surfaces overlap and use several stirrups
Wrapping, several downward protruding bars in end and the upward protruding bar mutual dislocation in several bottom surfaces overlap and uses several stirrups wrappings and
Its lower end is directly contacted with the bottom wall of rectangular notch, the overhanging steel of sidewall horizontal of several end horizontal protruding bars and above-mentioned middle part
Muscle mutual dislocation overlaps and several stirrups is used to wrap, and overlapped that length is not less than each above-mentioned protruding bar for above-mentioned mutual dislocation
8 times of diameter, and the valid bonding length of each above-mentioned protruding bar is not less than 25 times of its diameter；Above-mentioned join domain pours
There is ultra-high performance concrete, the both ends of prefabricated reinforced concrete coupling beam and two precast reinforced concrete shear walls are linked to be one
Body, the top of the rectangular notch of each precast reinforced concrete shear wall offer at least pulp for being connected to the join domain
Channel, to guarantee that it is closely knit that ultra-high performance concrete pours.
2. a kind of precast reinforced concrete shear wall as described in claim 1 and coupling beam connecting joint structure, it is characterised in that:
The mutual dislocation of the downward protruding bar in several ends and the upward protruding bar in several bottom surfaces overlapped length is not less than described
10 times of the diameter of the downward protruding bar in end.
3. a kind of precast reinforced concrete shear wall as described in claim 1 and coupling beam connecting joint structure, it is characterised in that:
The mutual dislocation of the upward protruding bar in several ends and the downward protruding bar in several top surfaces overlapped length is not less than described
10 times of the diameter of the upward protruding bar in end.
4. a kind of precast reinforced concrete shear wall as described in claim 1 and coupling beam connecting joint structure, it is characterised in that:
Overlapped that length is not small for the mutual dislocation of several end horizontal protruding bars and the sidewall horizontal protruding bar at the middle part
In 10 times of the diameter of the end horizontal protruding bar.
5. a kind of precast reinforced concrete shear wall as described in claim 1 and coupling beam connecting joint structure, it is characterised in that:
The valid bonding length of each protruding bar is not less than 30 times of its diameter.
6. precast reinforced concrete shear wall described in any claim and coupling beam connecting joint structure in claim 1 to 5
Construction method, characterized by the following steps:
(1) be prefabricated in the factory the prefabricated reinforced concrete coupling beam and two precast reinforced concrete shear walls, reserves to go out described in getting well
Channel is starched, and ensures that the extension of each protruding bar and valid bonding length are met the requirements；
(2) after being installed in place two precast reinforced concrete shear wall, the prefabricated reinforced concrete coupling beam is hung in into phase
Position is answered so that its both ends is corresponding with rectangular notch adaptation, wherein the lower end of the downward protruding bar in the end and rectangle lack
Mouthful bottom wall directly contact, to support and position the prefabricated reinforced concrete coupling beam, then will each protruding bar progress phase
The mutual dislocation answered overlaps and several stirrups is used to wrap；
(3) a corresponding rectangular notch, with two rectangle steel forms and the two corresponding join domains of L-type steel form for seal, at this
The top and lower part of two rectangle steel forms and two L-type steel templates are each to open several through-holes in advance, by high-strength screw by it is several this two
Rectangle steel form and two L-type steel templates are fixed on the prefabricated reinforced concrete coupling beam and the precast reinforced concrete shear wall
Outside wall surface, wherein the middle part of a rectangle steel form be equipped with one grouting mouth, the grouting mouth be equipped with one grouting be connected and fixed mechanism；
(4) grouting mechanism is connected and fixed mechanism with grouting to be connected, by being in the milk, mechanism pours superelevation into the join domain
Performance concrete stops pouring when the uniform grout in above-mentioned pulp channel, and with pulp channel of sealing with wax, and removes grouter
Structure, and block the grouting mouth；
(5) it is conserved after pouring after reaching specified intensity to the ultra-high performance concrete, removes the rectangle steel form and L
Steel form,.
7. construction method as claimed in claim 6, it is characterised in that: it includes being set to grouting mouth that the grouting, which is connected and fixed mechanism,
One upper hopper chute of top, the gliding groove below grouting mouth and the sealing being slidably arranged in the upper hopper chute and gliding groove
Plate, the grouting are connected and fixed mechanism with a first state and one second state, and when in the first state, hush panel closing fills
Mouth is starched, when in the second state, hush panel makes mouth opening of being in the milk far from grouting mouth.
8. construction method as claimed in claim 7, it is characterised in that: the grouting mechanism includes a grout pipe, the grout pipe
One end it is funnel-shaped, the edge of the other end extends outward to form end plate, the end plate sliding adapts to the upper hopper chute and under
In sliding slot.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110924552A (en) * | 2019-12-09 | 2020-03-27 | 上海市建筑科学研究院有限公司 | Prefabricated double-steel-plate concrete combined energy-dissipation coupling beam |
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