CN206655345U - A kind of high ductility Combined concrete seismic structural wall, earthquake resistant wall - Google Patents

A kind of high ductility Combined concrete seismic structural wall, earthquake resistant wall Download PDF

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Publication number
CN206655345U
CN206655345U CN201621488226.1U CN201621488226U CN206655345U CN 206655345 U CN206655345 U CN 206655345U CN 201621488226 U CN201621488226 U CN 201621488226U CN 206655345 U CN206655345 U CN 206655345U
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brick
ductility
concrete
earthquake resistant
seismic structural
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CN201621488226.1U
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邓明科
景武斌
张思海
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Xi'an Five And Civil Engineering New Materials Co Ltd
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Xi'an Five And Civil Engineering New Materials Co Ltd
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Abstract

The utility model discloses a kind of high ductility Combined concrete seismic structural wall, earthquake resistant wall, to solve the problems, such as fragility, low bearing capacity, anti-seismic performance and globality poor existing for existing solid brick masonry wall.High ductility Combined concrete seismic structural wall, earthquake resistant wall of the present utility model is by brick wall, distribution bar, through walls to drawing reinforcing bar, high ductility concrete topping and shear key to form;During construction, build masonry wall by laying bricks or stones first and arrange shear key groove, be embedded into the mortar joint of brick wall through walls to drawing reinforcing bar, then in brick wall surface assembling reinforcement mesh sheet, high ductility concrete is finally coated on brick wall surface and covers bar-mat reinforcement.Composite Semitic walls compression bearing, shear behavior and anti-seismic performance of the present utility model are superior to traditional brick wall, and are not susceptible to brittle break, and impervious moisture protection is strong, and wall integrity and durability are more preferable;The construction is simple of the brick wall simultaneously, low engineering cost.

Description

A kind of high ductility Combined concrete seismic structural wall, earthquake resistant wall
Technical field
The utility model belongs to building structure field in field of civil engineering, and specially a kind of high ductility Combined concrete resists Shake wall.
Background technology
Brick masonry structure is mainly built by laying bricks or stones by brick setting and mortar and formed, and construction quality differs greatly, and intensity is relatively low, Discreteness is big, and its tension, shearing resistance and anti-bending bearing capacity are all relatively low, and structural integrity is poor.Brick masonry wall ftractures in earthquake Its bearing capacity declines rapidly afterwards, easily collapses, and causes casualties and serious economic loss that earthquake region is huge.Except this it Outside, China's specification has compared with strict requirements to the height and the number of plies of brick masonry structure, receives the application of masonry structure Considerable restraint.Therefore the research work to brick masonry structure is particularly important.Found from macroscopical earthquake and experimental study, ground Shake acts on the cracking of lower brick setting wall and collapsed, and the shearing strength and deformability deficiency mainly due to wall cause.To sum up, Existing solid brick masonry wall has the shortcomings that low bearing capacity, fragility, cracking resistance and poor seismic behavior.
The content of the invention
For defect present in prior art, it is an object of the invention to provide a kind of high capacity, be not susceptible to it is crisp Property destroy and cracking resistance and the good high ductility Combined concrete seismic structural wall, earthquake resistant wall of anti-seismic performance.
To realize above-mentioned target, the utility model takes following scheme:
A kind of high ductility Combined concrete seismic structural wall, earthquake resistant wall, including brick wall, high ductility concrete topping, brick wall surface colligation There are transverse steel and vertical reinforcement, some L-shaped through walls are embedded with brick wall mortar joint to wearing lacing wire;The L-shaped is set to wearing lacing wire At transverse steel and vertical reinforcement crossbar contact;L-shaped is to wearing lacing wire through brick wall and termination bar connecting.
The brick wall surface is carved with some grooves, and the spacing of each groove is in plum blossom-shaped cloth along metope no more than 600mm Put, the section of groove is not less than 30mm circle for diameter, and depth of groove is not less than 30mm, and having poured high ductility in groove mixes Solidifying soil, form high ductility agent on crack resistance of concrete shearing key.
The high ductility concrete topping is coated in brick wall surface, and the transverse steel and vertical reinforcement are wrapped up.
The thickness of the high ductility concrete topping is 35~45mm.
Optionally, the two sides of the wall brick are provided with constructional column.
Specifically, it is 240 × 240mm in the construction column cross-section size.
Optionally, the spacing of the transverse steel and vertical reinforcement is 150~300mm.
Optionally, a diameter of 6~8mm of every transverse steel.
In addition, a diameter of 6~10mm of every vertical reinforcement.
Preferably, the spacing through walls to drawing reinforcing bar arranges that every is worn along metope no more than 600mm in plum blossom-shaped A diameter of 6mm of the wall to drawing reinforcing bar.
Compared to prior art, technique effect of the present utility model is as follows:
(1) the utility model is embedded to through walls to drawing reinforcing bar, and colligation distribution bar in the vertical mortar joint of brick masonry wall, is both applied Work is simple, and and can increases substantially the bearing capacity of brick masonry wall, and ensure that bar-mat reinforcement with high ductility concrete topping to brick The effect of contraction of masonry wall.
(2) the utility model forms high ductility anti-shear concrete key, improves Gao Yan in brick masonry wall surface layout groove Adhesive property between property concrete topping and brick masonry wall, ensure that the collaborative work ability between surface layer and brick wall.
(3) the high ductility concrete crushing strength that the utility model uses can reach more than 50MPa, and ultimate tensile strength is reachable More than 100 times of normal concrete, there is the plastic deformation ability of similar steel, there is good caking property between brick setting Can, it is a kind of ecological architectural material with high intensity, high ductility, high-durability and high damnification resistant ability.
(4) brick masonry wall of the present utility model has good durability, can extending structure service life, significantly carry The bearing capacity and anti-seismic performance of high existing brick masonry wall, reduce and even remove the work repaired after macroseism from.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model embodiment one;
Fig. 2 is Fig. 1 A direction views;
Fig. 3 is the structural representation of the utility model embodiment two;
Fig. 4 is Fig. 3 B direction views;
Each code represents in figure:1- floors, 2- brick walls, 3- constructional columns, 4-L shapes are to drawing reinforcing bar, 5- vertical reinforcements, 6- transverse directions Reinforcing bar, the high ductility anti-shear concrete keys of 7-, the high ductility concrete toppings of 8-, 9- grooves, 10- terminations reinforcing bar.
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Embodiment
The component of high ductility concrete of the present utility model is cement, flyash, sand, PVA fibers, water reducer and water.Its In, by mass percentage, cement:Flyash:Sand:Water=1:1:0.76:0.58;It is equal with the mixing of cement, flyash, sand and water Cumulative volume after even is radix, and the volume volume of PVA fibers is 1.5%, and the addition of water reducer is cement, flyash and silicon ash The 0.8% of gross mass.
The stirring means of above-mentioned high ductility concrete are:Cement, flyash and sand are poured into forced mixer first Dry mixing 2~3 minutes;Add water reducer and 80% water;Then add after PVA fibers are stirred for 2 minutes and add residue 20% Water, stir 1~2 minute.
It is the mechanical property test and its result for the high ductility concrete on the present embodiment that inventor provides below.
(1) test cube is made using 100mm × 100mm × 100mm standard test mode, conserved by standard curing method 60 days, carry out cubic compressive strength experiment.Result of the test shows:High ductility concrete test block compression strength average value is 62MPa, test block destructive process have obvious resistance to compression toughness.
(2) the anti-folding test block of prism is made using 40mm × 40mm × 160mm standard test mode, supported by standard curing method Shield 60 days, carry out fracture resistance experiment.Result of the test shows:High ductility concrete test block rupture strength average value is 12.6MPa, There is a plurality of fine and closely woven crack after destroying in test block.
(2) prism bending resistance test specimen is made using 40mm × 40mm × 160mm standard test mode, supported by standard curing method Shield 60 days, carry out experiment on flexural behavior.Result of the test shows:The first crack strength of high ductility concrete sample is 4.8MPa, test specimen Bearing capacity continues to improve after cracking, and ultimate strength 10.1MPa, depression of bearing force is slow after reaching peak load, according to ASTM C1018 methods calculate its bent toughness of bent toughness coefficient I of gained5、I10、I20、I30Respectively 6.2,14.5,33.0, 50.6, show that there is very high bent toughness.
(3) stretching test block is made using 50mm × 15mm × 350mm die trial, conserves 60 days, enter by standard curing method Row direct tensile test.As a result show:High ductility concrete sample uniaxial tension test average value is 3.8MPa, ultimate tensile strength 1.2% is can reach, bearing capacity is held essentially constant after test specimen cracking, has good tensile toughness, occurs in destructive process A plurality of fine and closely woven crack.
Experiment shows that the ultimate tensile strength of high ductility concrete is far above above《Code for design of concrete structures》 The ultimate tensile strength of normal concrete in GB50010, high ductility concrete compression, anti-folding, tension, by curved destruction when be respectively provided with compared with High toughness, its destructive characteristics have significantly different with normal concrete generation brittle break.
Embodiment one:
With reference to figure 1 and Fig. 2, the brick wall 2 in the present embodiment carries constructional column 3 and floor 1, and fired common brick block size is 240mm×115mm×53mm;The length of brick wall 2 is 4.5m, is highly 3.3m, thickness 240mm;The sectional dimension of constructional column 3 is 240mm×240mm;The thickness of floor 1 is 120mm;Its structure is:Some L-shaped are embedded with the mortar joint of brick wall 2 to drawing reinforcing bar 4;Vertical distribution bar 5 and transversely distributed steelbar 6 are banded with the outer surface of brick wall 2;L-shaped is arranged at horizontal steel to wearing lacing wire 4 At muscle 6 and the crossbar contact of vertical reinforcement 5;L-shaped is welded to wearing lacing wire 4 through brick wall 2 with termination reinforcing bar 10;The surface of brick wall 2 is carved with Some grooves, the spacing of groove is 600mm, is arranged along metope in plum blossom-shaped, and the section of groove is diameter 30mm circle, groove 9 depth are 30mm, and high ductility concrete is cast with groove 9, form high ductility agent on crack resistance of concrete shearing key 7;High ductility concrete Surface layer 8 is coated in the surface of brick wall 2, and the thickness of high ductility concrete topping 8 is 40mm, and transverse steel 6 and vertical reinforcement 5 are wrapped Wrap up in.
Floor 1 presses constructional reinforcement by arrangement of reinforcement, constructional column 3 is calculated in the present embodiment, for the vertical distribution bar 5 of enhancing and laterally The globality of distribution bar 6 and brick masonry wall 2, L-shaped is embedded in the mortar joint on the surface of brick masonry wall 2 to drawing reinforcing bar 4 to be linked as Overall, the present embodiment L-shaped is to drawing reinforcing bar 4 to use HPB300 level reinforcing bars, a diameter of 6mm, length 400mm, S-shaped by wall two The vertical distribution bar 5 in side and transversely distributed steelbar 6 are fixed to drawing, and adjacent L-shaped is the longitudinal pitch and horizontal spacing drawing reinforcing bar 4 It is 600mm.
Embodiment two:
With reference to figure 3 and Fig. 4, for the brick masonry wall 2 in the present embodiment without constructional column, fired common brick block size is 240mm ×115mm×53mm;The length of brick wall 2 is 4.2m, is highly 3.3m, thickness 240mm;The thickness of floor 1 is 120mm;Except not Need to pour outside constructional column 3, other working procedures are identical with embodiment one.
In the case of non-configuration reinforcement net, pseudo-static experimental has been carried out in Xi'an University of Architecture and Technology's structural experiment room, Result of the test shows:Compared to ordinary masonry shear wall, the shear-carrying capacity of high ductility Combined concrete seismic structural wall, earthquake resistant wall improves 20%, ductility improves 20%, and energy dissipation capacity improves 100%.There is multiple cracking development in high ductility concrete topping, and crack is thin It is close, greatly alleviate the destructiveness of wall.
According to engineering experience, when adding reinforced mesh, the shear-carrying capacity of high ductility Combined concrete seismic structural wall, earthquake resistant wall, ductility, Energy dissipation capacity can obtain further lifting.
Above-described embodiment one and two:The maximum particle diameter of sand used is 1.26mm in high ductility concrete;PVA fibers are Shanghai The PA600 fiber types of Luo Yang Science and Technology Ltd.s production, length 8mm, a diameter of 26 μm, tensile strength 1200MPa, elasticity Modulus is 30GPa;Cement is P.O.42.5R portland cements;Flyash is I grade of flyash;Water reducer is water-reducing rate 30% High-efficiency water-reducing agent of poly-carboxylic acid above, polycarboxylate water-reducer are Jiangsu Botexin Materials Co., Ltd's production- I type gathers Carboxylic acid high-performance water reducing agent.
Mechanical property advantage and brick masonry wall between good viscosity of the utility model using high ductility concrete Can, by setting distribution bar and high ductility anti-shear concrete key, make reinforcing bar-high ductility concrete topping of cladding on the outside of brick wall With the very enough collaborative works well of brick wall, larger horizontal active constraint power is both produced to brick masonry wall, improved brick masonry wall Shearing resistance and compression strength, the globality of brick masonry wall can be improved again, effectively suppress the cracking of brick masonry wall, significantly improve brick The body wall deformability of itself, so as to significantly improve the stability of brick masonry wall and anti-seismic performance, effectively mitigates geological process The destructiveness of lower masonry structure.
High ductility concrete has a good durability used by simultaneously, the service life of extending structure, reduce it is economical, Social cost, reduce and even remove the repair after brick masonry wall macroseism from.

Claims (7)

1. a kind of high ductility Combined concrete seismic structural wall, earthquake resistant wall, including brick wall (2), transverse steel (6), vertical reinforcement (5) and high ductility Concrete topping (8), it is characterised in that:
Brick wall (2) surface is banded with transverse steel (6) and vertical reinforcement (5), be embedded with brick wall (2) mortar joint some it is through walls L-shaped is to wearing lacing wire (4);The L-shaped is arranged at transverse steel (6) and vertical reinforcement (5) crossbar contact to wearing lacing wire (4);L-shaped It is connected to wearing lacing wire (4) through brick wall (2) with termination reinforcing bar (10);
The brick wall surface is carved with some grooves (9), and the spacing of the adjacent grooves (9) is in plum along metope no more than 600mm Flower-shaped arrangement, the section of groove (9) are not less than 30mm circle for diameter, and groove (9) depth is not less than 30mm, groove (9) High ductility concrete has inside been poured, has formed high ductility agent on crack resistance of concrete shearing key (7);
High ductility concrete topping (8) layer is coated in brick wall (2) surface, by the transverse steel (6) and vertical reinforcement (7) Parcel;
The thickness of the high ductility concrete topping (8) is 35~45mm.
2. high ductility Combined concrete seismic structural wall, earthquake resistant wall as claimed in claim 1, it is characterised in that:In the both sides of the brick wall (2) Face is provided with constructional column (3).
3. high ductility Combined concrete seismic structural wall, earthquake resistant wall as claimed in claim 2, it is characterised in that:In the constructional column (3) section Size is 240 × 240mm.
4. high ductility Combined concrete seismic structural wall, earthquake resistant wall as claimed in claim 1, it is characterised in that:The transverse steel (6) and perpendicular Spacing to reinforcing bar (5) is 150~300mm.
5. high ductility Combined concrete seismic structural wall, earthquake resistant wall as claimed in claim 1, it is characterised in that:Every transverse steel (6) it is straight Footpath is 6~8mm.
6. high ductility Combined concrete seismic structural wall, earthquake resistant wall as claimed in claim 1, it is characterised in that:Every vertical reinforcement (5) it is straight Footpath is 6~10mm.
7. high ductility Combined concrete seismic structural wall, earthquake resistant wall as claimed in claim 1, it is characterised in that:It is described through walls to drawing reinforcing bar (4) Spacing no more than 600mm, arranged along metope in plum blossom-shaped, every L-shaped is to wearing a diameter of 6mm of lacing wire (4).
CN201621488226.1U 2016-12-30 2016-12-30 A kind of high ductility Combined concrete seismic structural wall, earthquake resistant wall Active CN206655345U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621488226.1U CN206655345U (en) 2016-12-30 2016-12-30 A kind of high ductility Combined concrete seismic structural wall, earthquake resistant wall

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201621488226.1U CN206655345U (en) 2016-12-30 2016-12-30 A kind of high ductility Combined concrete seismic structural wall, earthquake resistant wall

Publications (1)

Publication Number Publication Date
CN206655345U true CN206655345U (en) 2017-11-21

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