Background technology
In recent years, along with the fast development of China's economy, urbanization was accelerated greatly.A large amount of populations are poured into the city, and expanding economy, so that be becoming tight land resources day.For relaxing people ground contradiction, dwelling house and commercial building etc. all presents the development trend of high stratification, superelevation, and this also has higher requirement to corresponding form of structure, and the one, it has good mechanical property requirement, such as lateral deformation stiffness, ultimate bearing capacity etc.; The 2nd, it has good ductility and energy dissipation capacity requirement, so that whole building under stronger seismic loading moderate finite deformation can occur, dissipate than multi-energy, thereby guarantee that structure does not collapse and remarkable destruction, with effective guarantee people's life security and property safety; The 3rd, it has good application property, simple structure requirement.
In the highrise building, lateral resistant member commonly used has two kinds of framework and shear walls, and wherein the mechanical property of shear wall is better than framework, builds higher, it is more that shear wall is used, and the shear wall of traditional form is in mechanical property, anti-seismic performance with certain deficiency is more or less arranged above the construction simplification.
1) reinforced concrete shear wall and Profiled bar concrete combination shearing wall
Although reinforced concrete shear wall and Profiled bar concrete combination shearing wall rigidity large bearing capacity are high, all there are serious deficiency in ductility and energy dissipation capacity.
2) steel plate shear force wall
Steel plate shear force wall in theory steel plate shear force wall mechanical property or Hysteresis Behavior is all more satisfactory, but because the outer flexing of its easy generating plane, so that its complex structure and utilize insufficient.
3) single steel plate concrete combined shear wall
Single steel plate concrete combined shear wall is hanging concrete plate on steel plate shear force wall, with the outer flexing of the face that prevents steel plate.Correlation test shows, the Hysteresis Behavior of the shear wall of this kind form and mechanical property improve than clean steel plate shear wall, but owing to the large reason of concrete slab rigidity, concrete slab is easy to cracking, so that it can not effectively prevent the steel plate flexing, simultaneously also largely affect its comfortableness and applicability, in addition, its also more complicated of constructing.
A kind of novel compound shear wall, i.e. double steel plate combined concrete shear wall have been risen the nineties in 20th century.This kind compound wall is comprised of steel plate and the inner cast-in-place plain concrete body of wall of both sides, be connected by a large amount of shearing resistance pegs, stiffening rib, vertical next door etc. between steel plate and the concrete, to guarantee the collaborative work between the two, two block plates in the plain concrete outside are then by to drawing the connections such as batten plate of welding on reinforcing bar, vertical baffle, the stiffening rib, with resistance wall dignity outer shearing and constraint concrete deformation, such as Fig. 1.The experimental study of double steel plate combined concrete shear wall shows, its initial stiffness is large, and bearing capacity is high, and ductility is better, and hysteresis loop is full, and energy dissipation capacity is strong, without the flexing sound.In construction, the wall outer side double steel plate is equivalent to template, and additionally formwork, and double steel plate outside framework can weld at the scene in factory's modularization processing again again, greatly reduces the difficulty of its site operation, has greatly accelerated speed of application.Aspect fire resistance, the fire resistance test of double steel plate combined concrete shear wall shows, the fireproof performance of this body of wall is good than clean steel plate shear wall, because when being heated, the steel plate of wall outer side mainly plays heat is conducted to inner concrete effect, and heat can not accumulated at outside steel plate, even so, outside steel plate still directly exposes in the thermal field, and steel billet temperature is still higher, and its fire line still needs specially treated.In addition, the double steel plate combined concrete shear wall is the same with other steel work, need to do special preservative treatment, to improve the durability of structure.
Therefore, can say that the double steel plate combined concrete shear wall is a kind of ideal lateral resistant member, but in actual applications, still there is the excessive and not very good shortcoming of ductility of rigidity in it.The rigidity that excessive rigidity is not easy to structure is distributed and is adjusted, and causes the rigidity of total to concentrate too much on the double steel plate combined concrete shear wall, is not easy to realize multiple anti-vibration defense lines and the integrated carrying advocated in the standard.The not very good antidetonation that is unfavorable for the double steel plate combined concrete shear wall of ductility own.In addition, it is large especially that rigidity is crossed the thermal stresses that conference makes structure, thereby make it lose a part of bearing capacity.
The present invention (Fig. 2 and Fig. 3) multiple-chamber type double steel plate combined concrete shear wall namely is for above two shortcomings, to a kind of improvement and the breakthrough of double steel plate combined concrete shear wall, thus a kind of novel double steel plate combined concrete shear wall that forms.It is to divide bin with the common double steel plate concrete combined shear wall along the high direction of wall by vertical baffle, concreting in the part bin again, another part bin is the power consumption material such as concreting or placement foamed aluminium not, thereby the body of wall of one is divided into concrete-filled steel square tubular column arranged side by side originally, making the anti-side mechanism of body of wall is that the main crooked flexural deformation that changes quadrate steel pipe column arranged side by side into is main by whole shear strain, reach the purpose that reduces the body of wall lateral deformation stiffness and further increase ductility, this is with similar with the working mechanism of perps reinforced concrete shear wall.What need specified otherwise is, in the multiple-chamber type double steel plate combined concrete shear wall have the concrete bin with without the concrete bin, not wide, generally there is the concrete bin to comprise an above bin, than many without the concrete bin, and wide, be the concrete bin to be arranged and be interspersed without the concrete bin on the whole.For guaranteeing without the steel plate of concrete bin flexing not, to satisfy Stability Checking without the steel plate width of concrete bin, if do not satisfy, need take the strengthening measures such as stiffening rib.Say on the whole, multiple-chamber type double steel plate combined concrete shear wall can further improve mechanical property and the anti-seismic performance of double steel plate combined concrete shear wall.
Summary of the invention
1. goal of the invention:
The purpose of this invention is to provide a kind of multiple-chamber type double steel plate combined concrete shear wall.It is in order to reduce the rigidity of double steel plate combined concrete shear wall, increases the ductility of double steel plate combined concrete shear wall, thereby further improves the applicable performance of double steel plate combined concrete shear wall.
2. technical scheme
Technical scheme of the present invention such as Fig. 2, its integral body is comprised of the inner plain concrete 7 of two blocks of surface of wall steel plates 6 and body of wall, between the two by being welded on peg 2 on the steel plate, realizing connecting to drawing reinforcing bar 1 to be connected with vertical baffle etc., to guarantee the collaborative work between the two.And utilize vertical baffle 4, divide bin with the body of wall space between two steel plates, then concreting in a part of bin, form concrete bin 8, another part bin then keeps the porous power consumption materials such as hole capital after selling all securities and filled and process aluminium, form hole capital after selling all securities chamber 9 and power consumption Material Filling bin 10, thereby form being alternately distributed of concrete bin 8 and hole capital after selling all securities chamber 9 and power consumption Material Filling bin 10.In addition, when Stability Checking is satisfied in hole capital after selling all securities chamber 9, on the 9 place's surface of wall steel plates 6 of hole capital after selling all securities chamber stiffening rib 3 can be set, when Stability Checking is not satisfied in hole capital after selling all securities chamber 9, need by calculating and setting stiffening rib 3 on the 9 place's surface of wall steel plates 6 of hole capital after selling all securities chamber.
On unitary construction, the width of hole capital after selling all securities chamber 9 and power consumption Material Filling bin 10 is not more than the twice of the thickness of wall body between two steel plates, and the width of concrete bin 8 is not more than 4 times of thickness of wall body between two steel plates; Hole capital after selling all securities chamber 9 and power consumption Material Filling bin 10 distances from the body of wall end are not less than 1/8 of body of wall place floor floor height; When door and window hole was arranged, hole capital after selling all securities chamber 9 and power consumption Material Filling bin 10 distances from edges, hole such as door and windows were not less than 1/8 of hole height.Steel plate, peg, should satisfy the calculation requirement of structure to the size of drawing reinforcing bar, vertical baffle and stiffening rib etc.
3. advantage and effect:
Compare with traditional double steel plate combined concrete shear wall (Fig. 1), the present invention (Fig. 2 and Fig. 3) has the following advantages and effect:
1) appropriateness has reduced rigidity, is convenient to the rigidity adjustment of structure, and effectively reduces thermal stresses;
2) change structure distortion pattern, and then improve structure ductility;
3) can place the power consumption such as foamed aluminium material without the concrete bin, further strengthen the anti-seismic performance of structure;
4) reduced concrete amount.
In a word, one aspect of the present invention has been improved mechanical property and the anti-seismic performance of double steel plate combined concrete shear wall, does not substantially increase again on the other hand difficulty of construction, and economic performance is also substantially constant, can say, and is comparatively feasible.
The specific embodiment
Fig. 1 is traditional double steel plate combined concrete shear wall axonometric drawing.
See Fig. 2, Fig. 3, a kind of multiple-chamber type double steel plate of the present invention combined concrete shear wall, its integral body is comprised of two blocks of surface of wall steel plates 6 and the inner plain concrete 7 of body of wall, between the two by being welded on peg 2 on the steel plate, realizing connecting to drawing reinforcing bar 1 to be connected with vertical baffle etc., to guarantee the collaborative work between the two.And utilize vertical baffle 4, divide bin with the body of wall space between two steel plates, then concreting in a part of bin, form concrete bin 8, another part bin then keeps the porous power consumption materials 5 such as hole capital after selling all securities and filled and process aluminium, form hole capital after selling all securities chamber 9 and power consumption Material Filling bin 10, thereby form being alternately distributed of concrete bin 8 and hole capital after selling all securities chamber 9 and power consumption Material Filling bin 10.In addition, when Stability Checking is satisfied in hole capital after selling all securities chamber 9, on the 9 place's surface of wall steel plates 6 of hole capital after selling all securities chamber stiffening rib 3 can be set, when Stability Checking is not satisfied in hole capital after selling all securities chamber 9, need by calculating and setting stiffening rib 3 on the 9 place's surface of wall steel plates 6 of hole capital after selling all securities chamber.
On unitary construction, the width of hole capital after selling all securities chamber 9 and power consumption Material Filling bin 10 is not more than the twice of the thickness of wall body between two steel plates, and the width of concrete bin 8 is not more than 4 times of thickness of wall body between two steel plates; Hole capital after selling all securities chamber 9 and power consumption Material Filling bin 10 distances from the body of wall end are not less than 1/8 of body of wall place floor floor height; When door and window hole was arranged, hole capital after selling all securities chamber 9 and power consumption Material Filling bin 10 distances from edges, hole such as door and windows were not less than 1/8 of hole height.Steel plate, peg, should satisfy the calculation requirement of structure to the size of drawing reinforcing bar, vertical baffle and stiffening rib etc.