CN109184306A - A kind of mixed type support construction and support system - Google Patents
A kind of mixed type support construction and support system Download PDFInfo
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- CN109184306A CN109184306A CN201811029309.8A CN201811029309A CN109184306A CN 109184306 A CN109184306 A CN 109184306A CN 201811029309 A CN201811029309 A CN 201811029309A CN 109184306 A CN109184306 A CN 109184306A
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- support
- beam section
- moment
- shear
- axle power
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/027—Preventive constructional measures against earthquake damage in existing buildings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/024—Structures with steel columns and beams
Abstract
The invention discloses a kind of mixed type support construction and support systems, belong to steel frame-brace structure field.The support construction includes: two frame columns；It is connected to the frame beam section of two frame top ends；The bottom end of the frame column in one end connection left side, the other end are connected to the first support in the frame beam section by the first vertical beam section, and the bottom end of the frame column on one end connection right side, the other end are connected to the second support in the frame beam section by the second vertical beam section, wherein, the first support and the second support intersect.It is improved using adjoin buildings or structures of the support construction provided in an embodiment of the present invention to dangerous buildings or structures, the lateral bearing capacity and dissipation seismic energy ability that its direction dangerous buildings or structures direction can be made to possess are more stronger than departing direction, guarantee to adjoin buildings or structures when earthquake and do not collapse to dangerous buildings or structures, so as to avoid collapsing caused secondary disaster by adjoining buildings or structures.
Description
Technical field
The present invention relates to steel frame-brace structure field, in particular to a kind of mixed type support construction and support system.
Background technique
Earthquake is a kind of serious natural calamity that human society faces.The generation of earthquake has the characteristics that randomness, institute
The earthquake effect of generation is possible to be more than rarely occurred earthquake, i.e., super rarely occurred earthquake, when super rarely occurred earthquake occurs, buildings or structures have
It may collapse, and its collapse direction is random.Such as super rarely occurred earthquake occurs for Wenchuan in 2008, causes a large amount of buildings or structures
Collapse.
When super rarely occurred earthquake occurs, for buildings or structures relevant to the dangerous material such as severe toxicity, corrosivity, radioactivity
(hereinafter referred to as " dangerous buildings or structures "), if the buildings or structures adjoined collapse and pound to dangerous buildings or structures,
Its structure safety can be endangered, and then is possible to cause or aggravate radioactive pollution, fire, explosion, severe toxicity or strong corrosive material
The secondary disasters such as leakage.
Summary of the invention
The embodiment of the invention provides a kind of mixed type support construction and support systems, can solve above-mentioned buildings or structures hair
Raw collapse and the problem of pound to dangerous buildings or structures.
Specifically, including technical solution below:
On the one hand, it provides a kind of mixed type support construction and support system, the support construction includes:
Two frame columns；
Frame beam section, the frame beam section are connected to the top of two frame columns；
First support, the bottom end of the frame column in one end connection left side of first support, the other end pass through first
Vertical beam section is connected in the frame beam section, and first support is anti-buckling support；
Second support, the bottom end of the frame column on one end connection right side of second support, the other end pass through second
Vertical beam section is connected in the frame beam section；
First support and second support intersect, and the frame beam section is separated into left frame beam section, center
Section of setting a roof beam in place and correct frame beam section；
The first vertical beam section and the second vertical beam section are each perpendicular to the frame beam section；
In the case where seismic wave is propagated from right to left, the first vertical beam section and the second vertical beam section can lead to
Cross plastic deformation dissipation seismic energy, the frame column, the left frame beam section, the middle Vierendeel girder section, the correct frame beam
It is generated from right to left that section, first support and described second support composed structure to be able to bear the seismic wave
Power；
In the case where seismic wave is propagated from left to right, the first vertical beam section can be by being plastically deformed dissipation earthquake
Energy, the frame column, the left frame beam section, the middle Vierendeel girder section, the correct frame beam section and first support institute
The structure of composition is able to bear the seismic wave generated power from left to right；
It is described second support reach compression bearing in the case where, the frame column, the left frame beam section, it is described in
Frame beam section, the correct frame beam section, first support, the first vertical beam section and the second vertical beam section are formed
Structure be able to bear power caused by the seismic wave；
The deformed or bent plastic deformation of shear plasticity can occur for the first vertical beam section and the second vertical beam section；
The compression bearing of first support is not less than tensile capacity, and the tensile capacity of second support is greater than
Compression bearing.
In a kind of possible design, in the case where seismic wave is propagated from right to left,
The moment M of the frame columnCR1-1, axle power NCR1-1, shear VCR1-1Design value meet the following conditions:
The moment M of the left frame beam sectionCR1-21, axle power NCR1-21, shear VCR1-21Design value meet the following conditions:
The moment M of the middle Vierendeel girder sectionCR1-22, axle power NCR1-22, shear VCR1-22Design value meet the following conditions:
The moment M of the correct frame beam sectionCR1-23, axle power NCR1-23, shear VCR1-23Design value meet the following conditions:
The moment M of first supportCR1-3, axle power NCR1-3, shear VCR1-3Design value meet the following conditions:
The moment M of second supportCR1-4, axle power NCR1-4, shear VCR1-4Design value meet the following conditions:
Wherein, MCS1-1、NCS1-1、VCS1-1When respectively frequently occurred earthquake combines, the load effect moment of flexure of the frame column, axis
Power, shearing, γ1-1For constant amplification factor, it is greater than 1.0；
MCS1-21、NCS1-21、VCS1-21When respectively frequently occurred earthquake combines, the load effect moment of flexure of the left frame beam section, axis
Power, shearing；γ1-21For constant amplification factor, it is greater than 1.0；
MCS1-22、NCS1-22、VCS1-22When respectively frequently occurred earthquake combines, the load effect moment of flexure of the middle Vierendeel girder section, axis
Power, shearing；γ1-22For constant amplification factor, it is greater than 1.0；
MCS1-23、NCS1-23、VCS1-23When respectively frequently occurred earthquake combines, the load effect moment of flexure of the correct frame beam section, axis
Power, shearing；γ1-23For constant amplification factor, it is greater than 1.0；
MCS1-3、NCS1-3、VCS1-3Respectively frequently occurred earthquake combine when, it is described first support load effect moment of flexure, axle power,
Shearing；γ1-3For constant amplification factor, it is greater than 1.0；
MCS1-4、NCS1-4、VCS1-4Respectively frequently occurred earthquake combine when, it is described second support load effect moment of flexure, axle power,
Shearing；γ1-4For constant amplification factor, it is greater than 1.0；
MSL、VSLFor the overall plastic property bend-carrying capacity and overall plastic property shear resistance capacity of the described first vertical beam section；
MSR、VSRFor the overall plastic property bend-carrying capacity and overall plastic property shear resistance capacity of the described second vertical beam section；
ML1、VL1When being combined for frequently occurred earthquake, the load effect moment of flexure and shearing of the first vertical beam section；
MR1、VR1When being combined for frequently occurred earthquake, the load effect moment of flexure and shearing of the second vertical beam section.
In a kind of possible design, in the case where seismic wave is propagated from left to right,
The moment M of the frame columnCR2-1, axle power NCR2-1, shear VCR2-1Design value meet the following conditions:
The moment M of the left frame beam sectionCR2-21, axle power NCR2-21, shear VCR2-21Design value meet the following conditions:
The moment M of the middle Vierendeel girder sectionCR2-22, axle power NCR2-22, shear VCR2-22Design value meet the following conditions:
The moment M of the correct frame beam sectionCR2-23, axle power NCR2-23, shear VCR2-23Design value meet the following conditions:
The moment M of first supportCR2-3, axle power NCR2-3, shear VCR2-3Design value meet the following conditions:
Wherein, MCS2-1、NCS2-1、VCS2-1When respectively frequently occurred earthquake combines, the load effect moment of flexure of the frame column, axis
Power, shearing, γ2-1For constant amplification factor, it is greater than 1.0；
MCS2-21、NCS2-21、VCS2-21When respectively frequently occurred earthquake combines, the load effect moment of flexure of the left frame beam section, axis
Power, shearing, γ2-21For constant amplification factor, it is greater than 1.0；
MCS2-22、NCS2-22、VCS2-22When respectively frequently occurred earthquake combines, the load effect moment of flexure of the middle Vierendeel girder section, axis
Power, shearing, γ2-22For constant amplification factor, it is greater than 1.0；
MCS2-23、NCS2-23、VCS2-23When respectively frequently occurred earthquake combines, the load effect moment of flexure of the correct frame beam section, axis
Power, shearing, γ2-23For constant amplification factor, it is greater than 1.0；
MCS2-3, NCS2-3, VCS2-3Respectively frequently occurred earthquake combine when, it is described first support load effect moment of flexure, axle power,
Shearing, γ2-3For constant amplification factor, it is greater than 1.0；
MSL、VSLFor the overall plastic property bend-carrying capacity and overall plastic property shear resistance capacity of the described first vertical beam section；
ML2、VL2When being combined for frequently occurred earthquake, the load effect moment of flexure and shearing of the first vertical beam section.
In a kind of possible design, in the case where second support reaches compression bearing,
The moment M of the frame columnCR3-1, axle power NCR3-1, shear VCR3-1Design value meet the following conditions:
MCR3-1≥γ3-1.MCS3-1,
NCR3-1≥γ3-1.NCS3-1,
VCR3-1≥γ3-1.VCS3-1；
The moment M of the left frame beam sectionCR3-21, axle power NCR3-21, shear VCR3-21Design value meet the following conditions:
MCR3-21≥γ3-21.MCS3-21,
NCR3-21≥γ3-21.NCS3-21,
VCR3-21≥γ3-21.VCS3-21；
The moment M of the middle Vierendeel girder sectionCR3-22, axle power NCR3-22, shear VCR3-22Design value meet:
MCR3-22≥γ3-22.MCS3-22,
NCR3-22≥γ3-22.NCS3-22,
VCR3-22≥γ3-22.VCS3-22；
The moment M of the correct frame beam sectionCR3-23, axle power NCR3-23, shear VCR3-23Design value meet:
MCR3-23≥γ3-23.MCS3-23,
NCR3-23≥γ3-23.NCS3-23,
VCR3-23≥γ3-23.VCS3-23
The moment M of first supportCR3-3, axle power NCR3-3, shear VCR3-3Design value meet:
MCR3-3≥γ3-3.MCS3-3,
NCR3-3≥γ3-3.NCS3-3,
VCR3-3≥γ3-3.VCS3-3；
The moment M of the first vertical beam sectionCR3-5, axle power NCR3-5, shear VCR3-5Design value meet:
MCR3-5≥γ3-5.MCS3-5,
NCR3-5≥γ3-5.NCS3-5,
VCR3-5≥γ3-5.VCS3-5；
The moment M of the second vertical beam sectionCR3-6, axle power NCR3-6, shear VCR3-6Design value meet:
MCR3-6≥γ3-6.MCS3-6,
NCR3-6≥γ3-6.NCS3-6,
VCR3-6≥γ3-6.VCS3-6；
Wherein, MCS3-1、NCS3-1、VCS3-1Respectively when second support reaches compression bearing, the frame column
Load Combination moment of flexure, axle power, shearing, γ3-1For constant amplification factor, it is greater than 1.0；
MCS3-21、NCS3-21、VCS3-21Respectively when second support reaches compression bearing, the left frame beam section
Load Combination moment of flexure, axle power, shearing, γ3-21For constant amplification factor, it is greater than 1.0；
MCS3-22、NCS3-22、VCS3-22Respectively when second support reaches compression bearing, the middle Vierendeel girder section
Load Combination moment of flexure, axle power, shearing, γ3-22For constant amplification factor, it is greater than 1.0；
MCS3-23、NCS3-23、VCS3-23Respectively when second support reaches compression bearing, the correct frame beam section
Load Combination moment of flexure, axle power, shearing, γ3-23For constant amplification factor, it is greater than 1.0；
MCS3-3、NCS3-3、VCS3-3Respectively when second support reaches compression bearing, the lotus of first support
Load group resultant bending moment, axle power, shearing, γ3-3For constant amplification factor, it is greater than 1.0；
MCS3-5、NCS3-5、VCS3-5Respectively when second support reaches compression bearing, the first vertical beam section
Load Combination moment of flexure, axle power, shearing, γ3-5For constant amplification factor, it is greater than 1.0；
MCS3-6、NCS3-6、VCS3-6Respectively when second support reaches compression bearing, the second vertical beam section
Load Combination moment of flexure, axle power, shearing, γ3-6For constant amplification factor, it is greater than 1.0.
In a kind of possible design, the compression bearing N of first support1-3With tensile capacity N2-3Are as follows:
N1-3=N2-3=f1.An-3；
The tensile capacity N of second support1-4Greater than compression bearing N2-4Are as follows:
N1-4=f2.An-4,
N2-4=Ψ .f2.An-4'；
Wherein, f1For the steel strength design value of first support；
f2For the steel strength design value of second support；
An-3For the net cross-sectional area of first support；
An-4For the net cross-sectional area of second support；
An-4' it is the described second gross cross-sectional area supported；
Ψ is stability reduction coefficient of axially loaded compression, Ψ≤1.0.
On the other hand, a kind of mixed type support system is also provided, the support system includes involved by multiple first aspects
Any support construction；
And multiple support constructions are longitudinally superimposed.
Technical solution bring beneficial effect provided in an embodiment of the present invention includes at least:
Changed using adjoin buildings or structures of the support construction provided in an embodiment of the present invention to dangerous buildings or structures
Into the lateral bearing capacity and dissipation seismic energy ability that its direction dangerous buildings or structures direction can be made to possess compare departing direction
It is stronger, guarantee that adjoin buildings or structures when earthquake does not collapse to dangerous buildings or structures, so as to avoid building due to adjoining
(structure) builds object and collapses caused secondary disaster.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is a kind of structural schematic diagram of mixed type support construction provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of another mixed type support construction provided in an embodiment of the present invention；
Fig. 3 is a kind of structural schematic diagram of mixed type support system provided in an embodiment of the present invention.
Appended drawing reference in figure respectively indicates:
1- frame column；
2- frame beam section；21- left frame beam section；Vierendeel girder section in 22-；23- correct frame beam section；
3- first is supported；
4- second is supported；
The vertical beam section of 5- first；
The vertical beam section of 6- second.
Specific embodiment
To keep technical solution of the present invention and advantage clearer, below in conjunction with attached drawing to embodiment of the present invention make into
One step it is described in detail.Unless otherwise defined, all technical terms used in the embodiment of the present invention all have and art technology
The normally understood identical meaning of personnel.
In the description of the present invention, it is to be understood that, term " on ", "lower", "left", "right", "top", "bottom" etc. indicate
Orientation or positional relationship be based on the orientation or positional relationship shown in the drawings or the invention product using when usually put
Orientation or positional relationship, be merely for convenience of description of the present invention and simplification of the description, rather than the structure of indication or suggestion meaning
Or system must have a particular orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " etc. are only used for distinguishing description, it is not understood to indicate or imply relative importance or hidden
Containing the quantity for indicating indicated technical characteristic.
In a first aspect, the embodiment of the present invention provides a kind of mixed type support construction and support system, as shown in Figure 1, the branch
Support structure includes:
Two frame columns 1；
Frame beam section 2, frame beam section 2 are connected to the top of two frame columns 1；
First support 3, the bottom end of the frame column 1 in one end connection left side of the first support 3, the other end pass through the first vertical beam
Section 5 is connected in frame beam section 2, and the first support 3 is anti-buckling support；
Second support 4, the bottom end of the frame column 1 on one end connection right side of the second support 4, the other end pass through the second vertical beam
Section 6 is connected in frame beam section 2；
First support 3 and the second support 4 intersect, and frame beam section 2 is separated into left frame beam section 21, middle Vierendeel girder section 22
With correct frame beam section 23；
First vertical beam section 5 and the second vertical beam section 6 are each perpendicular to frame beam section 2；
In the case where seismic wave is propagated from right to left, the first vertical beam section 5 and the second vertical beam section 6 can pass through plasticity
Deform dissipation seismic energy, frame column 1, left frame beam section 21, middle Vierendeel girder section 22, the support of correct frame beam section 23, first 3 and the
Structure composed by two supports 4 is able to bear seismic wave generated power from right to left；
In the case where seismic wave is propagated from left to right, the first vertical beam section 5 can be by being plastically deformed dissipation seismic energy
It measures, structure composed by frame column 1, left frame beam section 21, middle Vierendeel girder section 22, correct frame beam section 23 and the first support 3 can
Bear seismic wave generated power from left to right；
Second support 4 reach compression bearing in the case where, frame column 1, left frame beam section 21, middle Vierendeel girder section 22,
Correct frame beam section 23, first supports structure composed by the 3, first vertical beam section 5 and the second vertical beam section 6 to be able to bear seismic wave
Generated power；
The deformed or bent plastic deformation of shear plasticity can occur for the first vertical beam section 5 and the second vertical beam section 6；
The compression bearing of first support 3 is not less than tensile capacity, and the tensile capacity of the second support 4, which is greater than to be pressurized, to be held
Carry power.
It is understood that above-mentioned " being able to bear power caused by seismic wave " refers to that associated components do not destroy, example
Such as, " frame column 1, left frame beam section 21, middle Vierendeel girder section 22, the support of correct frame beam section 23, first 3 and the second support 4 are formed
Structure be able to bear seismic wave from right to left caused by power ", i other words, in the case where seismic wave is propagated from right to left,
Frame column 1, left frame beam section 21, middle Vierendeel girder section 22, the support of correct frame beam section 23, first 3 and the second support 4 are not broken
It is bad.
By taking support construction shown in FIG. 1 (3 setting of the first support is arranged in left side, the second support 4 on right side) as an example, this hair
The working principle for the support construction that bright embodiment provides are as follows:
1) in the case where seismic wave is propagated from right to left, first support 3 be in pressured state, second support 4 in by
Tension state；In the case where seismic wave is propagated from left to right, the first support 3 is in tension state, and the second support 4 is in compression shape
State.Since the compression bearing of the first support 3 is not less than tensile capacity, the compression bearing of the second support 4 is held less than tension
Power is carried, as earthquake load increases, 4 gradually buckle in compression of the second support, so that the side bearing capacity of structure from right to left
Greater than side bearing capacity from left to right.
2) in the case where seismic wave is propagated from right to left, first support 3 be in pressured state, second support 4 in by
Tension state, as earthquake load increases, the first vertical beam section 5, the second vertical beam section 6 are prior to frame column 1, left frame beam section
21,4 surrender dissipation seismic energy of middle Vierendeel girder section 22, the support of correct frame beam section 23, first 3 and the second support；When earthquake is from a left side
When to the right, the first support 3 is in tension state, and the second support 4 is in pressured state, as earthquake load increases, the second support 4
Gradually buckle in compression, the second vertical beam section 6 being connected with the second support 4 is unyielding, and first to be only connected with the first support 3 is perpendicular
Dissipation seismic energy is surrendered to beam section 5.Thus, when earthquake from right to left when, structure dissipation seismic energy ability be greater than earthquake from
The dissipation seismic energy ability of from left to right.
Thus, for above-mentioned support construction, when earthquake from right to left when, no matter side bearing capacity or dissipate seismic energy
Ability, when being all larger than earthquake from left to right.To even if structural collapse, can only also occur from a left side when super rarely occurred earthquake occurs
Collapsing to the right.
Similarly, if to realize super rarely occurred earthquake, structure is collapsed from right to left, only needs the first support 3 in conversion scheme
With the second support 4, left frame beam section 21 and correct frame beam section 23 and corresponding first vertical beam section 5 and the second vertical beam section 6
Position, as shown in Figure 2.
Changed using adjoin buildings or structures of the support construction provided in an embodiment of the present invention to dangerous buildings or structures
Into the lateral bearing capacity and dissipation seismic energy ability that its direction dangerous buildings or structures direction can be made to possess compare departing direction
It is stronger, guarantee that adjoin buildings or structures when earthquake does not collapse to dangerous buildings or structures, so as to avoid building due to adjoining
(structure) builds object and collapses caused secondary disaster.And the support construction is easy for construction, to execution conditions and of less demanding.
It is statisticallyd analyze according to earthquake probability of happening influential on architectural engineering, for an area, is surmounted in 50 years general
The earthquake intensity that rate is about 63% is the earthquake intensity of earthquake mode, referred to as " frequently occurred earthquake ", i.e., small shake；Outcross probability is about in 50 years
10% earthquake intensity is basic earthquake intensity, referred to as " earthquake of setting up defences ", i.e., middle shake；Outcross probability is about 2~3% in 50 years
Earthquake intensity is known as rarely occurred earthquake, i.e., big shake.
Three level targets that building aseismicity is set up defences: small earthquakes are not bad, medium ones can be repaired, and large ones cannot fall.It is specific as follows:
First level: when structure meet with this area frequently occurred earthquake influence when, main structure it is not damaged or be not required to repair can
It continues to use；
The second level: when structure meet with this area set up defences earthquake effect when, can be damaged, but still through running repair
It can continue to use；
Third level: when structure, which meets with this area rarely occurred earthquake, to be influenced, it will not collapse or occur the serious of threat to life
It destroys.
When structure designs, the target of setting up defences of above three level is realized using two-stage design, specific as follows:
The checking computations of first stage structural bearing capacity: the horizontal earthquake of frequently occurred earthquake is taken to influence the elastic earthquake that coefficient calculates structure
Characteristic value of action and corresponding earthquake load effects are tested by the section bearing capacity antidetonation that corresponding specification carries out structural elements
It calculates, reaches the target of the first level structure no damage in small earthquake, while reaching the second level and damaging the target that can be repaired.
Second stage structural elasto-plastic response deformation analysis: taking the horizontal earthquake of rarely occurred earthquake influences coefficient, carries out the modeling of structure bullet
Property stratified deformation checking computations, deformation is no more than Regulations maximum range, and takes corresponding anti-seismic construction measure, reaches third
The target of level structure no collapsing with strong earthquake.
Based on this, in above-mentioned support construction, in the case where seismic wave is propagated from right to left, can for frame column 1,
Left frame beam section 21, middle Vierendeel girder section 22,3, second support 4 of the support of correct frame beam section 23, first, are designed as follows:
The moment M of frame column 1CR1-1, axle power NCR1-1, shear VCR1-1Design value meet the following conditions:
The moment M of left frame beam section 21CR1-21, axle power NCR1-21, shear VCR1-21Design value meet the following conditions:
The moment M of middle Vierendeel girder section 22CR1-22, axle power NCR1-22, shear VCR1-22Design value meet the following conditions:
The moment M of correct frame beam section 23CR1-23, axle power NCR1-23, shear VCR1-23Design value meet the following conditions:
The moment M of first support 3CR1-3, axle power NCR1-3, shear VCR1-3Design value meet the following conditions:
The moment M of second support 4CR1-4, axle power NCR1-4, shear VCR1-4Design value meet the following conditions:
Wherein, MCS1-1、NCS1-1、VCS1-1When respectively frequently occurred earthquake combines, the load effect moment of flexure of frame column 1, axle power,
Shearing, γ1-1For constant amplification factor, it is greater than 1.0；
MCS1-21、NCS1-21、VCS1-21When respectively frequently occurred earthquake combines, the load effect moment of flexure of left frame beam section 21, axis
Power, shearing；γ1-21For constant amplification factor, it is greater than 1.0；
MCS1-22、NCS1-22、VCS1-22When respectively frequently occurred earthquake combines, the load effect moment of flexure of middle Vierendeel girder section 22, axis
Power, shearing；γ1-22For constant amplification factor, it is greater than 1.0；
MCS1-23、NCS1-23、VCS1-23When respectively frequently occurred earthquake combines, the load effect moment of flexure of correct frame beam section 23, axis
Power, shearing；γ1-23For constant amplification factor, it is greater than 1.0；
MCS1-3、NCS1-3、VCS1-3When respectively frequently occurred earthquake combines, the load effect moment of flexure of the first support 3, is cut at axle power
Power；γ1-3For constant amplification factor, it is greater than 1.0；
MCS1-4、NCS1-4、VCS1-4When respectively frequently occurred earthquake combines, the load effect moment of flexure of the second support 4, is cut at axle power
Power；γ1-4For constant amplification factor, it is greater than 1.0；
MSL、VSLFor the overall plastic property bend-carrying capacity and overall plastic property shear resistance capacity of the first vertical beam section 5；
MSR、VSRFor the overall plastic property bend-carrying capacity and overall plastic property shear resistance capacity of the second vertical beam section 6；
ML1、VL1When being combined for frequently occurred earthquake, the load effect moment of flexure and shearing of the first vertical beam section 5；
MR1、VR1When being combined for frequently occurred earthquake, the load effect moment of flexure and shearing of the second vertical beam section 6.
Further, γ1-1、γ1-21、γ1-22、γ1-23、γ1-3、γ1-4Value it is related with anti-seismic grade of the structures, specifically
It is referred to " architectural design earthquake resistant code " (GB50011-2010).Illustratively:
When seismic behavior is 1 grade, >=1.3；
When seismic behavior is 2 grades, >=1.2；
When seismic behavior is 3 grades, >=1.1.
MCS1-1、NCS1-1、VCS1-1, MCS1-21、NCS1-21、VCS1-21, MCS1-22、NCS1-22、VCS1-22, MCS1-23、NCS1-23、
VCS1-23, MCS1-3、NCS1-3、VCS1-3, MCS1-4、NCS1-4、VCS1-4In the case where being propagated from right to left for seismic wave, the lotus of each component
Carry effect moment of flexure, axle power, shearing.Software can be analyzed by engineering calculation and obtained during structural analysis, such as:
The softwares such as SAP2000, STAAD.PRO.
Overall plastic property shear resistance capacity VSL、VSRIt is related with member section type, when cross-sectional shape difference, VSL、VSRExpression it is public
Formula also has difference.
Illustratively, when member section is i shaped cross section, overall plastic property shear resistance capacity VSL、VSRCalculation expression formula
It may be expressed as: 0.6fy·hw·tw；
fyJoist steel material yield strength can be found in corresponding specification；
hwWeb height；
twSoffit of girder plate thickness；
In addition, overall plastic property bend-carrying capacity MSL、MSRIt is related with member section type, when cross-sectional shape difference, MSL、MSR's
Expression formula also has difference.
Illustratively, when member section is i shaped cross section, overall plastic property bend-carrying capacity MSL、MSRCalculation expression formula
It may be expressed as: (fy-δa)·Wpb
fyBeam section steel yield strength can be found in corresponding specification.
δaEdge of a wing mean normal stress caused by axial force.
WpbThe plastic section modulus of beam section, with beam section size B, t, h, twDeng related (B expression beam section flange width, t
Indicate that beam section edge of a wing thickness, h indicate beam section height, twIndicate active beam link web thickness).
Certainly, member section can also use other type, be not limited only to I-shaped.
And load effect moment ML1、MR1, load effect shear VL1、VR1Software can also be analyzed by engineering calculation to obtain.
In a kind of possible real-time mode, the first support 3 can be anti-buckling support, and the second support 4 can be common support.
In above-mentioned support construction, in the case where seismic wave is propagated from left to right, frame column 1, left frame can be directed to
Beam section 21, middle Vierendeel girder section 22, the support of correct frame beam section 23, first 3, are designed as follows:
The moment M of frame column 1CR2-1, axle power NCR2-1, shear VCR2-1Design value meet the following conditions:
The moment M of left frame beam section 21CR2-21, axle power NCR2-21, shear VCR2-21Design value meet the following conditions:
The moment M of middle Vierendeel girder section 22CR2-22, axle power NCR2-22, shear VCR2-22Design value meet the following conditions:
The moment M of correct frame beam section 23CR2-23, axle power NCR2-23, shear VCR2-23Design value meet the following conditions:
The moment M of first support 3CR2-3, axle power NCR2-3, shear VCR2-3Design value meet the following conditions:
Wherein, MCS2-1、NCS2-1、VCS2-1When respectively frequently occurred earthquake combines, the load effect moment of flexure of frame column 1, axle power,
Shearing, γ2-1For constant amplification factor, it is greater than 1.0；
MCS2-21、NCS2-21、VCS2-21When respectively frequently occurred earthquake combines, the load effect moment of flexure of left frame beam section 21, axis
Power, shearing, γ2-21For constant amplification factor, it is greater than 1.0；
MCS2-22、NCS2-22、VCS2-22When respectively frequently occurred earthquake combines, the load effect moment of flexure of middle Vierendeel girder section 22, axis
Power, shearing, γ2-22For constant amplification factor, it is greater than 1.0；
MCS2-23、NCS2-23、VCS2-23When respectively frequently occurred earthquake combines, the load effect moment of flexure of correct frame beam section 23, axis
Power, shearing, γ2-23For constant amplification factor, it is greater than 1.0；
MCS2-3, NCS2-3, VCS2-3When respectively frequently occurred earthquake combines, the load effect moment of flexure of the first support 3, is cut at axle power
Power, γ2-3For constant amplification factor, it is greater than 1.0；
MSL、VSLFor the overall plastic property bend-carrying capacity and overall plastic property shear resistance capacity of the first vertical beam section 5；
ML2、VL2When being combined for frequently occurred earthquake, the load effect moment of flexure and shearing of the first vertical beam section 5.
Wherein, γ2-1、γ2-21、γ2-22、γ2-23、γ2-3Value it is related with anti-seismic grade of the structures, be specifically referred to
" architectural design earthquake resistant code " (GB50011-2010).Illustratively:
When seismic behavior is 1 grade, >=1.3；
When seismic behavior is 2 grades, >=1.2；
When seismic behavior is 3 grades, >=1.1.
MCS2-1、NCS2-1、VCS2-1, MCS2-21、NCS2-21、VCS2-21, MCS2-22、NCS2-22、VCS2-22, MCS2-23、NCS2-23、
VCS2-23, MCS2-3, NCS2-3, VCS2-3In the case where being propagated from left to right for seismic wave, the load effect moment of flexure of each component, axle power,
Shearing.Software can be analyzed by engineering calculation and obtained during structural analysis, such as: SAP2000, STAAD.PRO etc. are soft
Part.
For MSL、VSL, above-mentioned to have done exemplary illustration, details are not described herein.
And ML2、VL2Software can be analyzed by engineering calculation to obtain.
It, can be for frame column 1, a left side in the case where the second support 4 reaches compression bearing in above-mentioned support construction
Frame beam section 21, middle Vierendeel girder section 22, correct frame beam section 23, first support 3, vertical beam section 5, the second vertical beam section 6, carry out such as
Lower design:
The moment M of frame column 1CR3-1, axle power NCR3-1, shear VCR3-1Design value meet the following conditions:
MCR3-1≥γ3-1.MCS3-1,
NCR3-1≥γ3-1.NCS3-1,
VCR3-1≥γ3-1.VCS3-1；
The moment M of left frame beam section 21CR3-21, axle power NCR3-21, shear VCR3-21Design value meet the following conditions:
MCR3-21≥γ3-21.MCS3-21,
NCR3-21≥γ3-21.NCS3-21,
VCR3-21≥γ3-21.VCS3-21；
The moment M of middle Vierendeel girder section 22CR3-22, axle power NCR3-22, shear VCR3-22Design value meet:
MCR3-22≥γ3-22.MCS3-22,
NCR3-22≥γ3-22.NCS3-22,
VCR3-22≥γ3-22.VCS3-22；
The moment M of correct frame beam section 23CR3-23, axle power NCR3-23, shear VCR3-23Design value meet:
MCR3-23≥γ3-23.MCS3-23,
NCR3-23≥γ3-23.NCS3-23,
VCR3-23≥γ3-23.VCS3-23
The moment M of first support 3CR3-3, axle power NCR3-3, shear VCR3-3Design value meet:
MCR3-3≥γ3-3.MCS3-3,
NCR3-3≥γ3-3.NCS3-3,
VCR3-3≥γ3-3.VCS3-3；
The moment M of first vertical beam section 5CR3-5, axle power NCR3-5, shear VCR3-5Design value meet:
MCR3-5≥γ3-5.MCS3-5,
NCR3-5≥γ3-5.NCS3-5,
VCR3-5≥γ3-5.VCS3-5；
The moment M of second vertical beam section 6CR3-6, axle power NCR3-6, shear VCR3-6Design value meet:
MCR3-6≥γ3-6.MCS3-6,
NCR3-6≥γ3-6.NCS3-6,
VCR3-6≥γ3-6.VCS3-6；
Wherein, MCS3-1、NCS3-1、VCS3-1Respectively when the second support 4 reaches compression bearing, the load group of frame column 1
Resultant bending moment, axle power, shearing, γ3-1For constant amplification factor, it is greater than 1.0；
MCS3-21、NCS3-21、VCS3-21Respectively when the second support 4 reaches compression bearing, the load of left frame beam section 21
Group resultant bending moment, axle power, shearing, γ3-21For constant amplification factor, it is greater than 1.0；
MCS3-22、NCS3-22、VCS3-22Respectively when the second support 4 reaches compression bearing, the load of middle Vierendeel girder section 22
Group resultant bending moment, axle power, shearing, γ3-22For constant amplification factor, it is greater than 1.0；
MCS3-23、NCS3-23、VCS3-23Respectively when the second support 4 reaches compression bearing, the load of correct frame beam section 23
Group resultant bending moment, axle power, shearing, γ3-23For constant amplification factor, it is greater than 1.0；
MCS3-3、NCS3-3、VCS3-3Respectively when the second support 4 reaches compression bearing, the Load Combination of the first support 3
Moment of flexure, axle power, shearing, γ3-3For constant amplification factor, it is greater than 1.0；
MCS3-5、NCS3-5、VCS3-5Respectively when the second support 4 reaches compression bearing, the load of the first vertical beam section 5
Group resultant bending moment, axle power, shearing, γ3-5For constant amplification factor, it is greater than 1.0；
MCS3-6、NCS3-6、VCS3-6Respectively when the second support 4 reaches compression bearing, the load of the second vertical beam section 6
Group resultant bending moment, axle power, shearing, γ3-6For constant amplification factor, it is greater than 1.0.
Wherein, γ3-1、γ3-21、γ3-22、γ3-23、γ3-3、γ3-5、γ3-6Value it is related with anti-seismic grade of the structures, tool
Body is referred to " architectural design earthquake resistant code " (GB50011-2010).Illustratively:
When seismic behavior is 1 grade, >=1.3；
When seismic behavior is 2 grades, >=1.2；
When seismic behavior is 3 grades, >=1.1.
In addition, MCS3-1、NCS3-1、VCS3-1, MCS3-21、NCS3-21、VCS3-21, MCS3-22、NCS3-22、VCS3-22, MCS3-23、NCS3-23、
VCS3-23, MCS3-3、NCS3-3、VCS3-3, MCS3-5、NCS3-5、VCS3-5, MCS3-6、NCS3-6、VCS3-6Reach compression load for the second support 4
When power, the Load Combination moment of flexure of each component, axle power, shearing.Software can be analyzed by engineering calculation and taken during structural analysis
, such as: the softwares such as SAP2000, STAAD.PRO.
In above-mentioned support construction, the compression bearing N of the first support 31-3With tensile capacity N2-3Are as follows: N1-3=N2-3
=f1.An-3；
The tensile capacity N of second support 41-4Greater than compression bearing N2-4Are as follows:
N1-4=f2.An-4,
N2-4=Ψ .f2.An-4'；
Wherein, f1For the steel strength design value of the first support 3；
f2For the steel strength design value of the second support 4；
An-3For the net cross-sectional area of the first support 3；
An-4For the net cross-sectional area of the second support 4；
An-4' it is the second gross cross-sectional area for supporting 4；
Ψ is stability reduction coefficient of axially loaded compression, Ψ≤1.0.
f1And f2For steel strength design value, can be determined according to " Code for design of steel structures ".Its value and steel grade phase
It closes, in Practical Project, the first support 3 and the second support 4 can also be different the steel of grade using the steel of same levels
Material.
Ψ can specifically be determined by " Code for design of steel structures " (GB 50017-2003) appendix C.
It is understood that net cross-sectional area can be equal to the area that gross cross-sectional area subtracts section weakened part.
Second aspect, the embodiment of the invention also provides a kind of mixed type support systems, as shown in figure 3, the support system
It may include any support construction mentioned by first aspect；
And multiple support constructions are longitudinally superimposed.
Changed using adjoin buildings or structures of the support system provided in an embodiment of the present invention to dangerous buildings or structures
Into the lateral bearing capacity and dissipation seismic energy ability that its direction dangerous buildings or structures direction can be made to possess compare departing direction
It is stronger, guarantee that adjoin buildings or structures when earthquake does not collapse to dangerous buildings or structures, so as to avoid building due to adjoining
(structure) builds object and collapses caused secondary disaster.And the support construction is easy for construction, to execution conditions and of less demanding.
It should be noted that the acquisition for parameter involved in this case, can refer to acquisition methods in the prior art.
For example, while combining " frequently occurred earthquake, the load effect moment of flexure of respective members, axle power, shearing ", " the second support reaches compression load
The acquisition of the parameters such as when power, the Load Combination moment of flexure of associated components, axle power, shearing " can refer to " seismic design provision in building code " (GB
50011-2010) page 12 and page 42, and " Technical Specification for Steel Structure of Tall Buildings " (JGJ 99-2015) page 46,
And incorporation engineering calculating analysis software (such as: the softwares such as SAP2000, STAAD.PRO) it obtains；" the overall plastic property of associated components
The acquisition of the parameters such as shear resistance capacity ", " the overall plastic property bend-carrying capacities of associated components " can refer to " structures Aseismic Design rule
Model " (GB 50191-2012) page 101；The acquisition of " compression bearings and tensile capacity of associated components " can refer to " steel knot
Structure design specification " (GB 50017-2003) page 36.
The above is merely for convenience of it will be understood by those skilled in the art that technical solution of the present invention, not to limit
The present invention.All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in this
Within the protection scope of invention.
Claims (6)
1. a kind of mixed type support construction, which is characterized in that the support construction includes:
Two frame columns (1)；
Frame beam section (2), the frame beam section (2) are connected to the top of two frame columns (1)；
First support (3), the bottom end of the frame column (1) in one end connection left side of first support (3), the other end pass through
First vertical beam section (5) is connected on the frame beam section (2), and first support (3) is anti-buckling support；
Second support (4), the bottom end of the frame column (1) on one end connection right side of second support (4), the other end pass through
Second vertical beam section (6) is connected on the frame beam section (2)；
First support (3) and second support (4) intersect, and the frame beam section (2) is separated into left frame beam section
(21), middle Vierendeel girder section (22) and correct frame beam section (23)；
The first vertical beam section (5) and the second vertical beam section (6) are each perpendicular to the frame beam section (2)；
It is further characterized in that
In the case where seismic wave is propagated from right to left, the first vertical beam section (5) and the second vertical beam section (6) can
By be plastically deformed dissipation seismic energy, the frame column (1), the left frame beam section (21), the middle Vierendeel girder section (22),
Structure composed by the correct frame beam section (23), first support (3) and second support (4) is able to bear describedly
Seismic wave from right to left caused by power；
In the case where seismic wave is propagated from left to right, the first vertical beam section (5) can be by being plastically deformed dissipation earthquake
Energy, the frame column (1), the left frame beam section (21), the middle Vierendeel girder section (22), the correct frame beam section (23) and
Structure composed by first support (3) is able to bear the seismic wave generated power from left to right；
It is described second support (4) reach compression bearing in the case where, the frame column (1), the left frame beam section (21),
The middle Vierendeel girder section (22), the correct frame beam section (23), first support (3), the first vertical beam section (5) and institute
It states structure composed by the second vertical beam section (6) and is able to bear power caused by the seismic wave；
The deformed or bent plastic deformation of shear plasticity can occur for the first vertical beam section (5) and the second vertical beam section (6)；
The compression bearing of first support (3) is not less than tensile capacity, and the tensile capacity of second support (4) is big
In compression bearing.
2. support construction according to claim 1, which is characterized in that in the case where seismic wave is propagated from right to left,
The moment M of the frame column (1)CR1-1, axle power NCR1-1, shear VCR1-1Design value meet the following conditions:
The moment M of the left frame beam section (21)CR1-21, axle power NCR1-21, shear VCR1-21Design value meet the following conditions:
The moment M of the middle Vierendeel girder section (22)CR1-22, axle power NCR1-22, shear VCR1-22Design value meet the following conditions:
The moment M of the correct frame beam section (23)CR1-23, axle power NCR1-23, shear VCR1-23Design value meet the following conditions:
The moment M of first support (3)CR1-3, axle power NCR1-3, shear VCR1-3Design value meet the following conditions:
The moment M of second support (4)CR1-4, axle power NCR1-4, shear VCR1-4Design value meet the following conditions:
Wherein, MCS1-1、NCS1-1、VCS1-1When respectively frequently occurred earthquake combines, the load effect moment of flexure of the frame column (1), axis
Power, shearing, γ1-1For constant amplification factor, it is greater than 1.0；
MCS1-21、NCS1-21、VCS1-21When respectively frequently occurred earthquake combines, the load effect moment of flexure of the left frame beam section (21), axis
Power, shearing；γ1-21For constant amplification factor, it is greater than 1.0；
MCS1-22、NCS1-22、VCS1-22When respectively frequently occurred earthquake combines, the load effect moment of flexure of the middle Vierendeel girder section (22), axis
Power, shearing；γ1-22For constant amplification factor, it is greater than 1.0；
MCS1-23、NCS1-23、VCS1-23When respectively frequently occurred earthquake combines, the load effect moment of flexure of the correct frame beam section (23), axis
Power, shearing；γ1-23For constant amplification factor, it is greater than 1.0；
MCS1-3、NCS1-3、VCS1-3When respectively frequently occurred earthquake combines, the load effect moment of flexure of first support (3), is cut at axle power
Power；γ1-3For constant amplification factor, it is greater than 1.0；
MCS1-4、NCS1-4、VCS1-4When respectively frequently occurred earthquake combines, the load effect moment of flexure of second support (4), is cut at axle power
Power；γ1-4For constant amplification factor, it is greater than 1.0；
MSL、VSLFor the overall plastic property bend-carrying capacity and overall plastic property shear resistance capacity of the described first vertical beam section (5)；
MSR、VSRFor the overall plastic property bend-carrying capacity and overall plastic property shear resistance capacity of the described second vertical beam section (6)；
ML1、VL1When being combined for frequently occurred earthquake, the load effect moment of flexure and shearing of the first vertical beam section (5)；
MR1、VR1When being combined for frequently occurred earthquake, the load effect moment of flexure and shearing of the second vertical beam section (6).
3. support construction according to claim 1, which is characterized in that in the case where seismic wave is propagated from left to right,
The moment M of the frame column (1)CR2-1, axle power NCR2-1, shear VCR2-1Design value meet the following conditions:
The moment M of the left frame beam section (21)CR2-21, axle power NCR2-21, shear VCR2-21Design value meet the following conditions:
The moment M of the middle Vierendeel girder section (22)CR2-22, axle power NCR2-22, shear VCR2-22Design value meet the following conditions:
The moment M of the correct frame beam section (23)CR2-23, axle power NCR2-23, shear VCR2-23Design value meet the following conditions:
The moment M of first support (3)CR2-3, axle power NCR2-3, shear VCR2-3Design value meet the following conditions:
Wherein, MCS2-1、NCS2-1、VCS2-1When respectively frequently occurred earthquake combines, the load effect moment of flexure of the frame column (1), axis
Power, shearing, γ2-1For constant amplification factor, it is greater than 1.0；
MCS2-21、NCS2-21、VCS2-21When respectively frequently occurred earthquake combines, the load effect moment of flexure of the left frame beam section (21), axis
Power, shearing, γ2-21For constant amplification factor, it is greater than 1.0；
MCS2-22、NCS2-22、VCS2-22When respectively frequently occurred earthquake combines, the load effect moment of flexure of the middle Vierendeel girder section (22), axis
Power, shearing, γ2-22For constant amplification factor, it is greater than 1.0；
MCS2-23、NCS2-23、VCS2-23When respectively frequently occurred earthquake combines, the load effect moment of flexure of the correct frame beam section (23), axis
Power, shearing, γ2-23For constant amplification factor, it is greater than 1.0；
MCS2-3, NCS2-3, VCS2-3When respectively frequently occurred earthquake combines, the load effect moment of flexure of first support (3), is cut at axle power
Power, γ2-3For constant amplification factor, it is greater than 1.0；
MSL、VSLFor the overall plastic property bend-carrying capacity and overall plastic property shear resistance capacity of the described first vertical beam section (5)；
ML2、VL2When being combined for frequently occurred earthquake, the load effect moment of flexure and shearing of the first vertical beam section (5).
4. support construction according to claim 1, which is characterized in that reach compression bearing in second support (4)
In the case where,
The moment M of the frame column (1)CR3-1, axle power NCR3-1, shear VCR3-1Design value meet the following conditions:
MCR3-1≥γ3-1.MCS3-1,
NCR3-1≥γ3-1.NCS3-1,
VCR3-1≥γ3-1.VCS3-1；
The moment M of the left frame beam section (21)CR3-21, axle power NCR3-21, shear VCR3-21Design value meet the following conditions:
MCR3-21≥γ3-21.MCS3-21,
NCR3-21≥γ3-21.NCS3-21,
VCR3-21≥γ3-21.VCS3-21；
The moment M of the middle Vierendeel girder section (22)CR3-22, axle power NCR3-22, shear VCR3-22Design value meet:
MCR3-22≥γ3-22.MCS3-22,
NCR3-22≥γ3-22.NCS3-22,
VCR3-22≥γ3-22.VCS3-22；
The moment M of the correct frame beam section (23)CR3-23, axle power NCR3-23, shear VCR3-23Design value meet:
MCR3-23≥γ3-23.MCS3-23,
NCR3-23≥γ3-23.NCS3-23,
VCR3-23≥γ3-23.VCS3-23
The moment M of first support (3)CR3-3, axle power NCR3-3, shear VCR3-3Design value meet:
MCR3-3≥γ3-3.MCS3-3,
NCR3-3≥γ3-3.NCS3-3,
VCR3-3≥γ3-3.VCS3-3；
The moment M of the first vertical beam section (5)CR3-5, axle power NCR3-5, shear VCR3-5Design value meet:
MCR3-5≥γ3-5.MCS3-5,
NCR3-5≥γ3-5.NCS3-5,
VCR3-5≥γ3-5.VCS3-5；
The moment M of the second vertical beam section (6)CR3-6, axle power NCR3-6, shear VCR3-6Design value meet:
MCR3-6≥γ3-6.MCS3-6,
NCR3-6≥γ3-6.NCS3-6,
VCR3-6≥γ3-6.VCS3-6；
Wherein, MCS3-1、NCS3-1、VCS3-1Respectively when second support (4) reaches compression bearing, the frame column (1)
Load Combination moment of flexure, axle power, shearing, γ3-1For constant amplification factor, it is greater than 1.0；
MCS3-21、NCS3-21、VCS3-21Respectively when second support (4) reaches compression bearing, the left frame beam section
(21) Load Combination moment of flexure, axle power, shearing, γ3-21For constant amplification factor, it is greater than 1.0；
MCS3-22、NCS3-22、VCS3-22Respectively when second support (4) reaches compression bearing, the middle Vierendeel girder section
(22) Load Combination moment of flexure, axle power, shearing, γ3-22For constant amplification factor, it is greater than 1.0；
MCS3-23、NCS3-23、VCS3-23Respectively when second support (4) reaches compression bearing, the correct frame beam section
(23) Load Combination moment of flexure, axle power, shearing, γ3-23For constant amplification factor, it is greater than 1.0；
MCS3-3、NCS3-3、VCS3-3Respectively when second support (4) reaches compression bearing, first support (3)
Load Combination moment of flexure, axle power, shearing, γ3-3For constant amplification factor, it is greater than 1.0；
MCS3-5、NCS3-5、VCS3-5Respectively when second support (4) reaches compression bearing, the first vertical beam section
(5) Load Combination moment of flexure, axle power, shearing, γ3-5For constant amplification factor, it is greater than 1.0；
MCS3-6、NCS3-6、VCS3-6Respectively when second support (4) reaches compression bearing, the second vertical beam section
(6) Load Combination moment of flexure, axle power, shearing, γ3-6For constant amplification factor, it is greater than 1.0.
5. support construction according to claim 1, which is characterized in that
The compression bearing N of first support (3)1-3With tensile capacity N2-3Are as follows:
N1-3=N2-3=f1.An-3；
The tensile capacity N of second support (4)1-4Greater than compression bearing N2-4Are as follows:
N1-4=f2.An-4,
N2-4=Ψ .f2.An-4'；
Wherein, f1For the steel strength design value of first support (3)；
f2For the steel strength design value of second support (4)；
An-3For the net cross-sectional area of first support (3)；
An-4For the net cross-sectional area of second support (4)；
An-4' it is the described second gross cross-sectional area for supporting (4)；
Ψ is stability reduction coefficient of axially loaded compression, Ψ≤1.0.
6. a kind of mixed type support system, which is characterized in that the support system includes described in multiple any one of claim 1-5
Support construction；
And multiple support constructions are longitudinally superimposed.
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