CN201762885U - Shear steel bar structure used for ductile reinforced concrete shear wall - Google Patents
Shear steel bar structure used for ductile reinforced concrete shear wall Download PDFInfo
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- CN201762885U CN201762885U CN2010202217392U CN201020221739U CN201762885U CN 201762885 U CN201762885 U CN 201762885U CN 2010202217392 U CN2010202217392 U CN 2010202217392U CN 201020221739 U CN201020221739 U CN 201020221739U CN 201762885 U CN201762885 U CN 201762885U
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Abstract
A shear steel bar structure used for a ductile reinforced concrete shear wall comprises a longitudinal steel bar, a horizontal steel bar, a tie steel bar, a shear steel bar and a reinforcing steel bar which are combined together, wherein the longitudinal steel bar is firstly interlaced and combined with the horizontal steel bar to form a surface; then the shear steel bar is connected and fixed or welded on the surface; and the adjacent two groups of longitudinal steel bars are buckled with the tie steel bar and then the concrete is injected to form the reinforced concrete (RC) shear wall. When the earthquake happens, the RC wall surface usually cracks towards the high shear force owing to the irregular rocking of the earthquake, and the RC wall surface mostly has slant cracks, therefore, the huge slant cracks are avoided or reduced after the shear steel bar is added, and the shock resistance of the structure can be further improved.
Description
Technical field
The utility model relates to the shear bar structure that a kind of tool ductile steel reinforced concrete shear wall uses, particularly a kind of reinforced concrete wall structure with lifting shock resistance.
Background technology
8 grades of violent earthquakes have taken place in Sichuan Province, 2 o'clock 45 fens China's Mainlands in afternoon on May 12nd, 2008, cause nearly 70,000 people unfortunately to be murdered altogether, and hundreds thousand of common people are injured; And earthquake causes about 21.6 ten thousand house collapses, and comprising 6,898 schoolhouses, the serious the condition of a disaster of Wenchuan violent earthquake has also highlighted Antiseismic building design deficiency simultaneously, and as seen for the prevention disaster that earthquake brought, it is not enough that preventive works is still disliked.And how from earthquake disaster, to draw bitter lesson, for the China's Mainland design of taking precautions against natural calamities in future, still want the positive shatter-proof technology of development structure, to reduce the heavy losses of common people's life and property.
And the city of China's Mainland building is constructed to the master with steel concrete (RC) mostly, so shear wall also is to be made by steel concrete (RC).Comprise according to adding up the reason of house, schoolhouse damaging after the calamity: the pillar of building is thin, concrete quality is relatively poor, main reinforcement negligible amounts, cylinder stirrup surrounding bundle force deficiency, main muscle overlap joint are bad, RC shear wall lazy weight and column beam joint district do not have non-toughness designs such as stirrup, demonstrates existing design specifications and has not possessed enough toughness and resist earthquake.Therefore, the shatter-proof and reinforcement of present stage design is primarily aimed at the intensity that this non-tough sexual behaviour is improved or promote its antidetonation.
For in for the building structure of low floor, RC wall or RC shear wall the shatter-proof ability that can significantly promote works is set.Building is when being subjected to horizontal loading (as seismic forces), and RC shear wall physical efficiency is born shearing, to increase the usefulness of antidetonation.General RC shear wall is mainly square body or cuboid, and compare its rigidity with beam very big with post, therefore can absorb most of seismic forces, also therefore be subjected to seismic force effects after, the RC shear wall is normal to produce many huge oblique cracks, also loses intensity simultaneously.Traditional RC shear wall arrangement of reinforcement is because of considering the convenience of construction, therefore only in the level and vertical always arrangement of reinforcement of RC shear wall, but because of in the RC shear wall arbitrarily the maximum shear stress direction of any can change because of the difference of its correspondence position, the crack that therefore can't effectively control in the RC shear wall takes place.After the earthquake many, the failure mode that the RC shear wall is big presents oblique crack mostly.Because the irregular vibrations that earthquake causes, the acceleration magnitude and the direction of the seismic forces that makes changed along with the time, because the direction of the shearing that the change of velocity attitude makes is inconsistent, yet the reinforcing bar arrangement mode of domestic RC shear wall becomes existing vertical configuration mostly, it is also more convenient to construct, but can't suppress the crack of all directions.
Because the stiffness of RC shear wall is very big, than the big manyfold of post, so the RC shear wall can absorb the horizontal force of most of structure, post has then absorbed the horizontal force of small part, so when design, the RC shear wall has been arranged, the size of post can shorten and reduce cost.Therefore the RC shear wall not only has the effect of antidetonation, also can reduce its cost when construction of buildings.The principal mode of RC shear wall comprises the infilled wall of joint pin and beam, is set at escalator usually or adopts independent set-up mode, and than many on the general concrete wall thickness, the thickness that has even above 50 centimeters; In the middle of maybe can being chosen in the bigger pillar of a power RC shear wall is set.The setting of these RC shear wall positions must be not hinder the function of use of building.
Because the failure mode of RC shear wall is a fail in shear, the moment of destroying at wall is a brittle fracture, and its tough sex expression is relatively poor.Therefore need be when the design seismic forces than the design load height of pure beam or post.The RC shear wall has absorbed most seismic forces, and seismic forces is reached the ground superstructure, therefore RC shear wall configuration and form under construction needs detailed planning, and must avoid building to produce torsional effect, with characteristic that meets building stiffness balance and the function of bringing into play the RC shear wall.
Simply, rule, the symmetrical structure system is the basic principle of shatter-proof design, finds that in many violent earthquakes the building that structural system is bad is the main cause that causes structural deterioration.System enhancement is primarily aimed at plane, the facade of building or the seismic forces bang path is irregular is improved, and avoids stress to concentrate and eccentric torsional effect.For strength deficiency, cause shatter-proof ability old buildings on the low side, the vertical structure material (as the RC shear wall) that adopt to increase anti-transversal force to be to improve building lateral stiffness and intensity, is widely to use at present and one of cost-effective structural system reinforcement worker method.
Because RC shear wall stiffness is very big, can bear most seismic forces, so the planning that the RC shear wall need be detailed when the building configuration, avoid building because of plane or the uneven eccentric torsional effect that is produced of facade stiffness distribution.This external manyly can find after the earthquake, the failure mode of RC shear wall present oblique fragility shearing cracking mostly.It is vertically netted that yet the reinforcing bar arrangement mode of general general RC shear wall presents mostly, though construction is more convenient, can't adapt to the shearing of all directions, so that can't suppress the crack of all directions.Because the caused shearing of earthquake, component maximum in the miter angle direction, and the steel mesh reinforcement of vertical-type ornaments can't be brought into play reinforcing bar tension and shearing-resistance characteristic, so when diagonal tension stress surpasses the concrete rupture modulus, just be oblique shearing cracking, Here it is after earthquake, the reason that RC shear wall diagonal crack forms.
At present with RC shear wall and combining structure thereof, announce No. 585207 patent case (call in the following text and quote case as proof) as TaiWan, China, its main composition is characterized as: a kind of precasting shear wall, it possesses the rectangular body that has concrete spouting to form, be provided with the bundle muscle of a plurality of vertical arrangements among the main body, be provided with many longitudinal reinforcements on demand in the bundle muscle, be staggeredly placed between bundle muscle and bundle muscle, can be provided with longitudinal reinforcement in the staggered place, the bundle muscle that is positioned at the main body both sides is outstanding outward by the main body picture; And the major defect on its formation is: because the irregular vibrations that earthquake causes, the size and the direction of the seismic forces that makes changed along with the time, also cause maximum shear stress along with the time changes owing to the size of seismic forces and the change of direction, yet the reinforcing bar arrangement mode of this RC shear wall becomes existing level and vertical configuration mostly, more convenient though construct, but can't be adapted to the maximum shear stress demand of dynamic change, so shearing just is oblique cracking (as: Fig. 1); Here it is after earthquake, the reason that RC shear wall crack forms.
Every deficiency that inventor of the present utility model derives in view of above-mentioned prior art is urgently to think to be improved innovation, and after concentrating on studies through taking great pains to attain one's goal for many years, successfully the shear bar structure that this part tool ductile steel reinforced concrete shear wall uses is finished in research and development finally.
The utility model content
The purpose of this utility model promptly is to provide the shear bar structure of tool ductile steel reinforced concrete shear wall use, by shear bar pattern of the present utility model to improve and to promote its toughness and shock resistance, and reduce the generation in huge oblique crack, and then promote the shock resistance of structure.
Another purpose of the present utility model is the shear bar structure that is to provide tool ductile steel reinforced concrete shear wall to use, can be according to the difform shear bar various bodies of wall of arranging in pairs or groups.
Can reach the shear bar structure of the tool ductile steel reinforced concrete shear wall use of above-mentioned purpose, include: a longitudinal rib, a horizontal bar, are muscle, a shear bar and a reinforcing steel be combined into; This longitudinal rib and horizontal bar arrange staggered be combined into a face after, again shear bar structure and reinforcing steel are fixed on this face; And with adjacent two faces to be that muscle fastens mutually, penetration concrete promptly becomes the RC shear wall one again.
Four corners that this shear bar is not fixed to will increase many oblique reinforcing steels.
This shear bar be shaped as spiral ring, a plurality of how much polygons or a plurality of circular concentric.
The material of this shear bar is reinforcing bar, guy wire, plastic-steel muscle or composite material.
Fixedly the material of shear bar is an iron wire.
Fixedly the material of shear bar is a welding material.
This shear bar pattern is that splice is arranged or alternating expression is arranged.
The shear bar structure that a kind of tool ductile steel reinforced concrete shear wall uses, it comprises:
One longitudinal rib;
One horizontal bar;
This longitudinal rib combines with this horizontal bar is staggered, makes it become a face; In conjunction with shear bar, penetration concrete coats this structure again, promptly becomes the RC shear wall one on this face.
Four corners that this shear bar is not fixed to will increase many oblique reinforcing steels.
This shear bar be shaped as spiral ring, a plurality of how much polygons or a plurality of circular concentric.
The material of this shear bar is reinforcing bar, guy wire, plastic-steel muscle or composite material.
Fixedly the material of shear bar is an iron wire.
Fixedly the material of shear bar is a welding material.
This shear bar pattern is that splice is arranged or alternating expression is arranged.
When earthquake takes place; because seismic forces size and direction are irregular; metope regular meeting is by ftractureed by the bigger direction of shearing; and cause metope to produce huge oblique crack; cause the works shock strength to die-off, so after increasing shear bar structure of the present utility model, can avoid oblique crack to take place ahead of time; and make shear wall have toughness, promote shock resistance simultaneously.
Description of drawings
Fig. 1 is the building shear destruction that prior art provides, and produces the schematic diagram of oblique cracking;
Fig. 2 is the enforcement floor map of the shear bar structure used of first kind of tool ductile steel reinforced concrete shear wall that the utility model embodiment provides;
Fig. 3 A is the enforcement schematic perspective view of the shear bar structure used of first kind of tool ductile steel reinforced concrete shear wall that the utility model embodiment provides;
Fig. 3 B is the enlarged drawing to A among Fig. 3 A that the utility model embodiment provides;
Fig. 4 is the enforcement floor map of the shear bar structure used of second kind of tool ductile steel reinforced concrete shear wall that the utility model embodiment provides;
Fig. 5 A is the enforcement schematic perspective view of the shear bar structure used of second kind of tool ductile steel reinforced concrete shear wall that the utility model embodiment provides;
Fig. 5 B is the enlarged drawing to B among Fig. 5 A that the utility model embodiment provides;
Fig. 6 is that the welding material of the shear bar structure used of the tool ductile steel reinforced concrete shear wall that provides of the utility model embodiment links schematic diagram;
Fig. 7 is the schematic diagram of the shear bar staggered pattern that provides of the utility model embodiment;
Fig. 8 is the schematic diagram that the shear bar configuration that provides of the utility model embodiment changes;
Fig. 9 is that the shear bar that the utility model embodiment provides is the schematic diagram that the geometry polygon is arranged.
[critical element symbol description]
1: the first face, 11: longitudinal rib, 12: horizontal bar, 13 shear bars, 131: reinforcing steel, 14: iron wire, 15: welding material, 2: the second faces, 3: be muscle, 4: concrete, 5: face, 51: longitudinal rib, 52: horizontal bar, 53: shear bar, 531: reinforcing steel, 54: iron wire, 6: concrete, 7: long body of wall.
The specific embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, the utility model embodiment is described in further detail below in conjunction with accompanying drawing.
See also Fig. 2, Figure 2 shows that the enforcement floor map of the shear bar structure that tool ductile steel reinforced concrete shear wall provided by the utility model uses, the utility model comprises: a longitudinal rib 11, a horizontal bar 12, are muscle 3, a shear bar 13, an iron wire 14 and a reinforcing steel 131 be combined intos;
This longitudinal rib 11 and these horizontal bar 12 staggered combinations, make it become first face 1, again on this first face 1 with fixing shear bar 13 patterns of the present utility model of iron wire 14, and four corners that this shear bar 13 is not fixed to will increase in addition reinforcement of the oblique reinforcing steel of a root 131; Wherein this shear bar 13 is shaped as spiral ring, a plurality of how much polygons or a plurality of circular concentric etc.; Wherein, the material of this shear bar 13 can be reinforcing bar, guy wire, plastic-steel muscle or composite material etc.
See also Fig. 3 A and 3B, Fig. 3 A is depicted as the enforcement schematic perspective view of the shear bar structure of tool ductile steel reinforced concrete shear wall use provided by the utility model, will be according to said method formed first facial 1 and second face 2 being that muscle 3 fastens mutually, penetration concrete 4 coats this structure again, promptly becomes the RC shear wall one; When earthquake took place, because earthquake is rocked and is irregular direction, RC metope regular meeting was ftractureed by the bigger direction of shearing, and causes metope mostly to be oblique shearing crack, so after increasing shear bar 13, can avoid taking place the generation in oblique crack.
See also Fig. 4, Figure 4 shows that another enforcement floor map of shear bar structure that tool ductile steel reinforced concrete shear wall provided by the utility model uses; Formed by a longitudinal rib 11, a horizontal bar 12 and a shear bar 13; This longitudinal rib 11 and this horizontal bar 12 staggered combinations make it become a face, again on this face with iron wire 14 fixing shear bar 13 patterns of the present utility model, and four corners that this shear bar 13 is not fixed to will increase in addition reinforcement of many oblique reinforcing steels 131; Shear bar 13 in this embodiment is to represent with a plurality of concentrically ringed patterns.
See also Fig. 5 A and 5B, Fig. 5 A is depicted as another enforcement schematic perspective view of the shear bar structure of tool ductile steel reinforced concrete shear wall use provided by the utility model; This shear bar can be arranged in pairs or groups and be used at the RC shear wall, with longitudinal rib 51 and these horizontal bar 52 staggered combinations, make it become a face 5, on this face 5, fix shear bar 53 patterns of the present utility model again with iron wire 54, and four corners that this shear bar 53 is not fixed to will increase many oblique reinforcing steel 531 reinforcement in addition, penetration concrete 6 coats this structure again, promptly becomes the RC shear wall of one tool toughness.
See also Fig. 6, Figure 6 shows that the welding material of the shear bar structure that tool ductile steel reinforced concrete shear wall provided by the utility model uses links schematic diagram; Wherein this shear bar 13 and reinforcing steel 131 are welding material 15 with longitudinal rib 11 and horizontal bar 12 employed bond materials, to improve strength of connection.
See also Fig. 7 and Fig. 8, Fig. 7 and Figure 8 shows that shear bar that collocation reinforced concrete wall provided by the utility model uses is applied in the enforcement schematic diagram of long body of wall, by among the figure as can be known, when the utility model is applied in long body of wall 7, this long body of wall face can be provided with more than one shear bar 13 patterns, and these shear bar 13 patterns can be splice and arrange; These shear bar 13 patterns also can be alternating expression and arrange, and above-mentioned shear bar shape can be spiral ring, a plurality of how much polygons (as shown in Figure 9) or a plurality of circular concentric etc., and the reinforcing steel 131 of can arranging in pairs or groups equally when construction uses.
The utility model must be made in a large number in precasting factory, the reduction of erection time, increases efficiency of construction, to finish the construction of RC shear wall fast, can efficiently finish the building that meets the antidetonation standard for the work of rebuilding after the calamity, recovery speed after the lifting calamity is guaranteed common people's security of the lives and property.
Ground had the ground motion of vibrations, twisting, rising and following degradation when earthquake took place, and each that takes place in earthquake constantly all can change its travel direction and size.In the vibrations that do not have rule, relative displacement takes place in the structure in house, when works produce the crack happen occasionally avalanche may, in shockproof building, modal is to increase the amplitude that the RC shear wall waves building to diminish.And earthquake takes place, and the function of RC shear wall is most seismic forces when absorbing the earthquake generation, so the RC shear wall is the first line of defence of opposing seismic forces.After the earthquake many, the failure mode that the RC shear wall is big presents oblique crack mostly.Because the irregular vibrations that earthquake causes, the size and the direction of seismic forces were changed along with the time, owing to the size of seismic forces and the change of direction cause maximum shear stress along with the time changes, yet the common mode of constructing at present is the reinforcing bar arrangement mode with the RC shear wall presents level and vertical configuration mostly, it is also more convenient to construct, but can't be adapted to the maximum shear stress demand of dynamic change, so RC shear wall crack just is oblique cracking.
RC shear wall crack presents oblique cracking mostly, and the crack angle is then relevant with the seismic forces size with body of wall depth-width ratio, body of wall interior detail portion's arrangement of reinforcement.Because seismic forces causes RC shear wall crack to be oblique, take place to need to dispose the reinforcing bar vertical for these cracks are avoided, so the utility model increases the generation of part ring-type reinforcing bar (as: screw type, circular concentric, concentric polygon etc.) with the control crack with reinforcing bar in the RC shear wall with the crack.
The shear bar structure that tool ductile steel reinforced concrete shear wall that this creation provided uses, quote with aforementioned that case and other are existing mutually relatively the time, to have following advantage with technology as proof:
1. the shear bar pattern carried of the utility model utilization to be improving and to promote its shock strength, and reduces the generation in huge oblique crack, and then promotes the shock resistance of structure.
2. the utility model utilizes the difform shear bar pattern various bodies of wall of arranging in pairs or groups.
3. the utility model is able to make in a large number in precasting factory, and by the precasting design, significantly increase applies efficient.
The above only is preferred embodiment of the present utility model, and is in order to restriction the utility model, not all within spirit of the present utility model and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (14)
1. the shear bar structure used of a tool ductile steel reinforced concrete shear wall, it comprises:
One longitudinal rib;
One horizontal bar;
One is muscle;
This longitudinal rib and this horizontal bar are staggered to be combined, and makes it become a face, again with two adjacent faces being that muscle fastens mutually; It is characterized in that: in conjunction with shear bar, penetration concrete coats this structure again, promptly becomes the RC shear wall one at this face.
2. the shear bar structure that tool ductile steel reinforced concrete shear wall as claimed in claim 1 uses is characterized in that four corners that this shear bar is not fixed to will increase many oblique reinforcing steels.
3. the shear bar structure that tool ductile steel reinforced concrete shear wall as claimed in claim 1 uses, its spy is, this shear bar be shaped as spiral ring, a plurality of how much polygons or a plurality of circular concentric.
4. the shear bar structure that tool ductile steel reinforced concrete shear wall as claimed in claim 1 uses is characterized in that the material of this shear bar is reinforcing bar, guy wire, plastic-steel muscle or composite material.
5. the shear bar structure that tool ductile steel reinforced concrete shear wall as claimed in claim 1 uses is characterized in that, this fixedly the material of shear bar be iron wire.
6. the shear bar structure that tool ductile steel reinforced concrete shear wall as claimed in claim 1 uses is characterized in that, this fixedly the material of shear bar be welding material.
7. the shear bar structure that tool ductile steel reinforced concrete shear wall as claimed in claim 1 uses is characterized in that, this shear bar pattern is that splice is arranged or alternating expression is arranged.
8. the shear bar structure used of a tool ductile steel reinforced concrete shear wall, it comprises:
One longitudinal rib;
One horizontal bar;
This longitudinal rib combines with this horizontal bar is staggered, makes it become a face; It is characterized in that: in conjunction with shear bar, penetration concrete coats this structure again, promptly becomes the RC shear wall one on this face.
9. the shear bar structure that tool ductile steel reinforced concrete shear wall as claimed in claim 8 uses is characterized in that four corners that this shear bar is not fixed to will increase many oblique reinforcing steels.
10. the shear bar structure that tool ductile steel reinforced concrete shear wall as claimed in claim 8 uses is characterized in that, this shear bar be shaped as spiral ring, a plurality of how much polygons or a plurality of circular concentric.
11. the shear bar structure that tool ductile steel reinforced concrete shear wall as claimed in claim 8 uses is characterized in that the material of this shear bar is reinforcing bar, guy wire, plastic-steel muscle or composite material.
12. the shear bar structure that tool ductile steel reinforced concrete shear wall as claimed in claim 8 uses is characterized in that, this fixedly the material of shear bar be iron wire.
13. the shear bar structure that tool ductile steel reinforced concrete shear wall as claimed in claim 8 uses is characterized in that, this fixedly the material of shear bar be welding material.
14. the shear bar structure that tool ductile steel reinforced concrete shear wall as claimed in claim 8 uses is characterized in that, this shear bar pattern is that splice is arranged or alternating expression is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202217392U CN201762885U (en) | 2010-06-10 | 2010-06-10 | Shear steel bar structure used for ductile reinforced concrete shear wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2010202217392U CN201762885U (en) | 2010-06-10 | 2010-06-10 | Shear steel bar structure used for ductile reinforced concrete shear wall |
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| CN201762885U true CN201762885U (en) | 2011-03-16 |
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| CN2010202217392U Expired - Fee Related CN201762885U (en) | 2010-06-10 | 2010-06-10 | Shear steel bar structure used for ductile reinforced concrete shear wall |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102561554A (en) * | 2012-02-16 | 2012-07-11 | 同济大学 | Joint for wallboard components of precast concrete shear wall structure |
| CN102979222A (en) * | 2012-12-17 | 2013-03-20 | 广州市设计院 | Concrete shear wall with continuous annular steel bar structures |
| CN104204377A (en) * | 2012-04-02 | 2014-12-10 | 东京铁钢株式会社 | Reinforcement assembly and shear reinforcing bars used for reinforced concrete structure |
| CN105040909A (en) * | 2015-08-27 | 2015-11-11 | 天津市曙光金属制品有限公司 | Ribbed steel bar welded mesh |
| CN106503360A (en) * | 2016-10-26 | 2017-03-15 | 中国电建集团成都勘测设计研究院有限公司 | Large volume concrete structural shear Design arrangement of reinforcement computational methods |
-
2010
- 2010-06-10 CN CN2010202217392U patent/CN201762885U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102561554A (en) * | 2012-02-16 | 2012-07-11 | 同济大学 | Joint for wallboard components of precast concrete shear wall structure |
| CN102561554B (en) * | 2012-02-16 | 2014-04-02 | 同济大学 | Joint for wallboard components of precast concrete shear wall structure |
| CN104204377A (en) * | 2012-04-02 | 2014-12-10 | 东京铁钢株式会社 | Reinforcement assembly and shear reinforcing bars used for reinforced concrete structure |
| CN102979222A (en) * | 2012-12-17 | 2013-03-20 | 广州市设计院 | Concrete shear wall with continuous annular steel bar structures |
| CN102979222B (en) * | 2012-12-17 | 2015-12-09 | 广州市设计院 | There is the concrete shear force wall of continuous annular bar construction |
| CN105040909A (en) * | 2015-08-27 | 2015-11-11 | 天津市曙光金属制品有限公司 | Ribbed steel bar welded mesh |
| CN106503360A (en) * | 2016-10-26 | 2017-03-15 | 中国电建集团成都勘测设计研究院有限公司 | Large volume concrete structural shear Design arrangement of reinforcement computational methods |
| CN106503360B (en) * | 2016-10-26 | 2020-02-04 | 中国电建集团成都勘测设计研究院有限公司 | Calculation method for shear design reinforcement of mass concrete structure |
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Granted publication date: 20110316 Termination date: 20130610 |