Eccentrically supported energy-absorbing beams and eccentrically supported members

Abstract

The present invention discloses an eccentrically supported energy-absorbing beam, wherein the eccentrically supported energy-absorbing beam comprises a first energy-absorbing beam segment, a second energy-absorbing beam segment and a third energy-absorbing beam segment sequentially connected along a first direction, wherein the first energy-absorbing beam segment, the second energy-absorbing beam segment and the third energy-absorbing beam segment satisfy: s ≡μ·V S , where M S V is the full plastic bending bearing capacity of the first energy absorbing beam segment or the third energy absorbing beam segment; S is the full plastic shear bearing capacity of the second energy-absorbing beam segment; μ is a constant coefficient, and its value range is 1.1≤μ≤1.25; ≡ means equivalent to. The energy-absorbing capacity of the eccentrically supported energy-absorbing beam of the present invention can be fully utilized to reduce the speed of decrease of structural stiffness and the disaster impact caused by excessive deformation.

Description

Technical Field

[0001] The invention relates to the technical field of steel structure buildings, and in particular to an eccentrically supported energy-absorbing beam and an eccentrically supported component. Background Art

[0002] Eccentric support means that the intersection of the support axis and the beam axis is at a certain distance from the intersection of the beam and column. The beam section between the two intersections is the so-called energy-absorbing beam section. The eccentric support structure includes an energy-absorbing beam section and non-energy-absorbing beam sections connected to both ends of the energy-absorbing beam section.

[0003] When an earthquake occurs, the energy-absorbing beam section enters plasticity and dissipates the energy of the earthquake through plastic deformation. However, in the related art, only the web of the shear yield type energy-absorbing beam section undergoes plastic deformation, and only the flange of the bending yield type energy-absorbing beam section undergoes plastic deformation. The plastic deformation of the above two types of energy-absorbing beam sections is not fully utilized, resulting in the ability to dissipate earthquake energy not being fully utilized. The flange and web of the bending shear type energy-absorbing beam section deform at the same time, resulting in excessively rapid plastic deformation of the bending shear type energy-absorbing beam section, causing the overall building structure stiffness to decrease too quickly. Summary of the invention

[0004] The present invention is based on the inventor's discovery and understanding of the following facts and problems:

[0005] In the related art, the structure of the eccentrically supported energy absorbing beam is usually designed as a shear yield type energy absorbing beam, a bending yield type energy absorbing beam or a bending shear type energy absorbing beam.

[0006] However, the inventors found in the actual application process that when encountering an earthquake, in the shear yield type energy absorbing beam, only the web of the energy absorbing beam section undergoes shear plastic deformation, while the flange of the energy absorbing beam section does not undergo plastic deformation; in the bending yield type energy absorbing beam section, only the flange of the energy absorbing beam section undergoes plastic deformation, while the web of the energy absorbing beam section does not undergo plastic deformation, resulting in insufficient plastic deformation of the shear yield type energy absorbing beam or the bending yield type energy absorbing beam, and the ability to dissipate seismic energy cannot be fully utilized. The flange and web of the bending shear type energy absorbing beam deform simultaneously, resulting in excessive plastic deformation of the bending shear type energy absorbing beam section, causing the overall building structure stiffness to decrease too quickly. Therefore, it is necessary to further improve the energy dissipation effect and seismic performance of the eccentrically supported energy absorbing beam.

[0007] The present invention aims to solve at least one of the technical problems in the related art to a certain extent. To this end, the embodiments of the present invention provide an eccentrically supported energy-absorbing beam and an eccentrically supported member, which can fully exert the energy-absorbing capacity of the eccentrically supported energy-absorbing beam under earthquake action, thereby reducing the speed of decrease of structural stiffness and the disaster impact caused by excessive deformation.

[0008] The eccentrically supported energy-absorbing beam of the embodiment of the present invention comprises a first energy-absorbing beam section, a second energy-absorbing beam section and a third energy-absorbing beam section sequentially connected along a first direction, wherein each of the first energy-absorbing beam section, the second energy-absorbing beam section and the third energy-absorbing beam section comprises: a first flange of the energy-absorbing beam, wherein the first flange of the energy-absorbing beam extends along the first direction, wherein the dimension of the first flange of the energy-absorbing beam of the first energy-absorbing beam section in the second direction gradually decreases along the direction toward the second energy-absorbing beam section, wherein the dimension of the first flange of the energy-absorbing beam of the third energy-absorbing beam section in the second direction gradually decreases along the direction toward the second energy-absorbing beam section, wherein the second direction is orthogonal to the first direction; and a second flange of the energy-absorbing beam , the second flange of the energy absorbing beam is arranged opposite to the first flange of the energy absorbing beam, the second flange of the energy absorbing beam extends along the first direction, the size of the second flange of the energy absorbing beam of the first energy absorbing beam section in the second direction gradually decreases along the direction toward the second energy absorbing beam section, and the size of the second flange of the energy absorbing beam of the third energy absorbing beam section in the second direction gradually decreases along the direction toward the second energy absorbing beam section; an energy absorbing beam web, the energy absorbing beam web extends along the first direction, and the energy absorbing beam web connects the bottom surface of the first flange of the energy absorbing beam and the top surface of the second flange of the energy absorbing beam; the first energy absorbing beam section, the second energy absorbing beam section and the third energy absorbing beam section satisfy: M S ≡μ·V S ; Among them, M S V is the full plastic bending bearing capacity of the first energy absorbing beam segment or the third energy absorbing beam segment; S is the full plastic shear bearing capacity of the second energy-absorbing beam segment; μ is a constant coefficient, and its value range is 1.1≤μ≤1.25; ≡ means equivalent to.

[0009] The eccentrically supported energy-absorbing beam of the embodiment of the present invention, the first energy-absorbing beam segment, the second energy-absorbing beam segment and the third energy-absorbing beam segment satisfy M S ≡μ·V S When the energy absorption beam of the first energy absorption beam section and the energy absorption beam web of the third energy absorption beam section undergo plastic deformation and energy consumption first under the action of earthquake, the energy absorption beam web of the second energy absorption beam section undergoes plastic deformation and energy consumption second, and the first flange and the second flange of the energy absorption beam of the first energy absorption beam section and the first flange and the second flange of the energy absorption beam of the third energy absorption beam section undergo plastic deformation last. Therefore, the energy absorption capacity of the eccentrically supported energy absorption beam in the embodiment of the present invention can be fully utilized, and it is avoided that the energy absorption beam flange and the web undergo plastic deformation at the same time, causing the stiffness of the overall building structure to decrease too quickly, and it is avoided that the deformation of the overall building structure increases too quickly, thereby reducing the impact of earthquake disasters on the overall building structure.

[0010] In some embodiments, the first energy absorbing beam segment, the second energy absorbing beam segment and the third energy absorbing beam segment satisfy:

[0011] M Rl ≥max(Msl1 , M sl2 ,......M sli ......, M sln );

[0012] M Rl / γ RE ≥η·max(M slE1， M slE2 ,......M slEi ......, M slEn );

[0013] V Rl ≥max(V sl1 , V sl2 ,......V sli ......, V sln );

[0014] V Rl / γ RE ≥η·max(V slE1 , V slE2 ,......V slEi ......, V slEn );

[0015] N Rl ≥max(N sl1 , N sl2 ,......N sli ......, N sln );

[0016] N Rl / γ RE ≥η·max(N slE1 , N slE2 ,......N slEi ......, N slEn );in,

[0017] M Rl 、V Rl 、N Rl is the design value of the moment resistance, shear resistance and axial force resistance of the first energy absorbing beam segment, or the design value of the moment resistance, shear resistance and axial force resistance of the second energy absorbing beam segment, or the design value of the moment resistance, shear resistance and axial force resistance of the third energy absorbing beam segment;

[0018] M sli 、V sli 、N sliIn non-seismic conditions, the design values ​​of the basic combined effect bending moment, shear force, and axial force of the loads of the first energy-absorbing beam section, or the design values ​​of the basic combined effect bending moment, shear force, and axial force of the loads of the second energy-absorbing beam section, or the design values ​​of the basic combined effect bending moment, shear force, and axial force of the loads of the third energy-absorbing beam section;

[0019] M slEi 、V slEi 、N slEi In the case of earthquake conditions, the design values ​​of the basic combined effect bending moment, shear force and axial force of the load of the first energy-absorbing beam section, or the design values ​​of the basic combined effect bending moment, shear force and axial force of the load of the second energy-absorbing beam section, or the design values ​​of the basic combined effect bending moment, shear force and axial force of the load of the third energy-absorbing beam section;

[0020] γ RE is the seismic adjustment factor of bearing capacity;

[0021] η is a constant magnification factor, which is greater than 1.0.

[0022] In some embodiments, the second energy absorbing beam section satisfies: Rml ≥V Sm ·l2 / 2; where M Rml V is the design value of the bending moment resistance of the second energy-absorbing beam section; Sm is the full plastic shear bearing capacity of the second energy absorbing beam section; l2 is the size of the second energy absorbing beam section in the first direction.

[0023] In some embodiments, an end of the first energy absorbing beam segment away from the second energy absorbing beam segment in the first direction, or an end of the third energy absorbing beam segment away from the second energy absorbing beam segment in the first direction satisfies: in,

[0024] is a design value of bending moment resistance of one end of the first energy absorbing beam segment away from the second energy absorbing beam segment in the first direction, or a design value of bending moment resistance of one end of the third energy absorbing beam segment away from the second energy absorbing beam segment in the first direction;

[0025] V Sm is the full plastic shear bearing capacity of the second energy-absorbing beam segment;

[0026] L is the total size of the first energy absorbing beam segment, the second energy absorbing beam segment and the third energy absorbing beam segment in the first direction, L=2·l1+l2;

[0027] l1 is the size of the first energy absorbing beam segment or the third energy absorbing beam segment in the first direction;

[0028] l2 is the size of the second energy absorbing beam section in the first direction.

[0029] In some embodiments, the first energy absorbing beam segment or the third energy absorbing beam segment at any cross section in the first direction satisfies:

[0030] in,

[0031] is the design value of the moment resistance at any cross section of the first energy absorbing beam segment or the third energy absorbing beam segment in the first direction;

[0032] V Sm is the full plastic shear capacity of the second energy-absorbing beam segment;

[0033] x is the distance from any cross section of the first energy absorbing beam segment or the third energy absorbing beam segment in the first direction to the middle position of the second energy absorbing beam segment, and the value range of x is: l2 / 2<x<(l2 / 2+l1).

[0034] In some embodiments, the size of the second energy absorbing beam segment in the first direction satisfies: L / 3≤l2≤L / 2; the size of the first energy absorbing beam segment or the third energy absorbing beam segment in the first direction satisfies: L / 4≤l1≤L / 3; wherein,

[0035] L is the total size of the first energy absorbing beam segment, the second energy absorbing beam segment and the third energy absorbing beam segment in the first direction, L=2·l1+l2;

[0036] l1 is the size of the first energy absorbing beam segment or the third energy absorbing beam segment in the first direction;

[0037] l2 is the size of the second energy absorbing beam section in the first direction.

[0038] In some embodiments, the first flange of the energy absorbing beam or the second flange of the energy absorbing beam of the first energy absorbing beam segment is away from one end of the second energy absorbing beam segment, or the first flange of the energy absorbing beam or the second flange of the energy absorbing beam of the third energy absorbing beam segment is away from one end of the second energy absorbing beam segment satisfies:

[0039] b1=[h1·t w ·(0.29·μ·L-0.25·h1)] / [t f ·(h1+t f )],in,

[0040] b1 is the dimension of the first flange of the energy absorbing beam or the second flange of the energy absorbing beam of the first energy absorbing beam section away from the second energy absorbing beam section, or the first flange of the energy absorbing beam or the second flange of the energy absorbing beam of the third energy absorbing beam section away from the second energy absorbing beam section in the second direction;

[0041] t f is the dimension of the first flange of the energy absorbing beam or the second flange of the energy absorbing beam in the up-down direction, and the up-down direction is orthogonal to the first direction and the second direction;

[0042] t w is the size of the web of the energy absorbing beam in the second direction;

[0043] h1 is the dimension of the web of the energy absorbing beam in the up-down direction;

[0044] l1 is the size of the first energy absorbing beam segment or the third energy absorbing beam segment in the first direction;

[0045] l2 is the size of the second energy absorbing beam section in the first direction;

[0046] L is the total size of the first energy absorbing beam segment, the second energy absorbing beam segment and the third energy absorbing beam segment in the first direction, L=2*11+l2.

[0047] In some embodiments, the first flange of the energy absorbing beam or the second flange of the energy absorbing beam of the second energy absorbing beam section satisfies:

[0048] b2=[h1·t w ·(0.29·μ·l2-0.25·h1)] / [t f ·(h1+t f )];in,

[0049] b2 is the size of the first flange of the energy absorbing beam or the second flange of the energy absorbing beam of the second energy absorbing beam section in the second direction;

[0050] t f is the size of the first flange of the energy absorbing beam or the second flange of the energy absorbing beam in the up-down direction;

[0051] t w is the size of the web of the energy absorbing beam in the second direction;

[0052] h1 is the dimension of the web of the energy absorbing beam in the up-down direction;

[0053] l2 is the dimension of the second energy absorbing beam section in the first direction.

[0054] In some embodiments, the dimension of any position of the first flange or the second flange of the energy absorbing beam of the first energy absorbing beam section in the second direction, or the dimension of any position of the first flange or the second flange of the energy absorbing beam of the third energy absorbing beam section in the second direction satisfies:

[0055] b x =[h1·t w ·(0.58·μ·x-0.25·h1)] / [t f ·(h1+t f )];in,

[0056] b x is the size of any position of the first flange (34) or the second flange (35) of the energy absorbing beam of the first energy absorbing beam section (31) in the second direction, or the size of any position of the first flange (34) or the second flange (35) of the energy absorbing beam of the third energy absorbing beam section (33) in the second direction, b2<b x <b1;

[0057] t f is the size of the first flange of the energy absorbing beam or the second flange of the energy absorbing beam in the up-down direction;

[0058] t w is the size of the web of the energy absorbing beam in the second direction;

[0059] h1 is the dimension of the web of the energy absorbing beam in the up-down direction;

[0060] x is the distance from any cross section of the first energy absorbing beam segment or the third energy absorbing beam segment in the first direction to the middle position of the second energy absorbing beam segment, and the value range of x is: l2 / 2<x<(12 / 2+l1).

[0061] The eccentric support member of the embodiment of the present invention comprises a first non-energy absorbing beam section, a second non-energy absorbing beam section and an eccentrically supported energy absorbing beam, wherein the eccentrically supported energy absorbing beam is the eccentrically supported energy absorbing beam described in any one of the above items, wherein the first non-energy absorbing beam section and the second non-energy absorbing beam section extend along the first direction, wherein one end of the first non-energy absorbing beam section is connected to one end of the eccentrically supported energy absorbing beam, and one end of the second non-energy absorbing beam section is connected to the other end of the eccentrically supported energy absorbing beam.

[0062] The energy absorption capacity of the eccentrically supported energy absorption beam in the eccentrically supported member of the embodiment of the present invention can be fully utilized to avoid the simultaneous plastic deformation of the flange and web of the energy absorption beam, which may cause the stiffness of the overall building structure to decrease too quickly, and to avoid the deformation of the overall building structure to increase too quickly, thereby reducing the impact of earthquake disasters on the overall building structure.

[0063] In some embodiments, the first non-energy absorbing beam segment or the second non-energy absorbing beam segment satisfies:

[0064] M Rb ≥max(M sb1 , M sb2 ,......M sbi ......, M sbn );

[0065] M Rb / γ RE ≥η·max(α1·M sbE1 , α2·M sbE2 , ... α i ·M sbEi ......, α n ·M sbEnn );

[0066] V Rb ≥max(V sb1 , V sb2 ,......V sbi ......, V sbn );

[0067] V Rb / γ RE ≥η·max(α1·V sbE1 , α2·V sbE2 , ... α i ·V sbEi ......, α n ·V sbEn );

[0068] N Rb ≥max(N sb1 , N sb2 ,......N sbi ......, N sbn );

[0069] N Rb / γ RE ≥η·max(α1·N sbE1 ,α2·N sbE2 , ... α i ·N sbEi ......, α n ·N sbEnn );

[0070] in,

[0071] M Rb 、VRb 、N Rb is the design value of the bending moment, shear force and axial force resistance of the first non-energy absorbing beam section, or the design value of the bending moment, shear force and axial force resistance of the second non-energy absorbing beam section;

[0072] M sbi 、V sbi 、N sbi In non-seismic conditions, the design values ​​of the basic combined effects of the loads of the first non-energy absorbing beam section, the design values ​​of the basic combined effects of the loads of the second non-energy absorbing beam section, the design values ​​of the basic combined effects of the loads of the first non-energy absorbing beam section, the design values ​​of the basic combined effects of the loads of the second non-energy absorbing beam section;

[0073] M sbEi 、V sbEi、 N sbEi In the case of earthquake conditions, the design values ​​of the basic combined effect bending moment, shear force and axial force of the load of the first non-energy absorbing beam section, or the design values ​​of the basic combined effect bending moment, shear force and axial force of the load of the second non-energy absorbing beam section;

[0074] M Sl 、M Sm 、M Sr are the full plastic bending bearing capacities of the first energy absorbing beam segment, the second energy absorbing beam segment, and the third energy absorbing beam segment respectively;

[0075] V Sl 、V Sm 、V Sr are the full plastic shear bearing capacities of the first energy absorbing beam segment, the second energy absorbing beam segment, and the third energy absorbing beam segment respectively;

[0076] M sllEi 、V sllEi Under earthquake conditions, the design values ​​of the basic combined effect bending moment and shear force of the load of the first energy-absorbing beam section (31);

[0077] M smlEi 、V smlEi Under earthquake conditions, the design values ​​of the basic combined effect bending moment and shear force of the load of the second energy-absorbing beam section (32);

[0078] M srlEi 、V srlEi Under earthquake conditions, the design values ​​of the basic combined effect bending moment and shear force of the load of the third energy-absorbing beam section (33);

[0079] γ RE Bearing capacity seismic adjustment factor;

[0080] η is a constant magnification factor, which is greater than 1.0.

[0081] In some embodiments, each of the first non-energy absorbing beam segment and the second non-energy absorbing beam segment comprises a non-energy absorbing beam first flange, a non-energy absorbing beam second flange, and a non-energy absorbing beam web, wherein the non-energy absorbing beam first flange, the non-energy absorbing beam second flange, and the non-energy absorbing beam web extend along the first direction, and the non-energy absorbing beam web connects a bottom surface of the non-energy absorbing beam first flange and a top surface of the non-energy absorbing beam second flange.

[0082] In some embodiments, the eccentric support member also includes a stiffening plate, at least two of which are provided, and at least two of the stiffening plates are respectively provided on both sides of the web of the energy absorbing beam in the second direction, and a side surface of the stiffening plate in the second direction is connected to the side surface of the web of the energy absorbing beam, the upper end of the stiffening plate is connected to the bottom surface of the first flange of the energy absorbing beam, and the lower end of the stiffening plate is connected to the top surface of the second flange of the energy absorbing beam.

[0083] In some embodiments, the eccentric support member further includes a first support beam segment and a second support beam segment, one end of the first support beam segment is connected to a bottom surface of one end of the first non-energy absorbing beam segment close to the eccentric support energy absorbing beam, the other end of the first support beam segment extends in a downward direction and is inclined in a direction away from the eccentric support energy absorbing beam, one end of the second support beam segment is connected to a bottom surface of one end of the second non-energy absorbing beam segment close to the eccentric support energy absorbing beam, the other end of the second support beam segment is inclined in a downward direction and in a direction away from the eccentric support energy absorbing beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0084] Figure 1 It is a schematic structural diagram of an eccentrically supported energy-absorbing beam and an eccentrically supported component according to an embodiment of the present invention.

[0085] Figure 2 4 is a top view of an eccentrically supported energy-absorbing beam and an eccentrically supported member according to an embodiment of the present invention.

[0086] Figure 3 yes Figure 1 Schematic diagram of the cross section of AA.

[0087] Figure 4 yes Figure 1 Schematic diagram of the cross section of BB.

[0088] Figure 5 yes Figure 1 Schematic cross-section of CC.

[0089] Figure numerals: 1, first non-energy-absorbing beam section; 11, first flange of non-energy-absorbing beam; 12, second flange of non-energy-absorbing beam; 13, web of non-energy-absorbing beam; 2, second non-energy-absorbing beam section; 3, eccentrically supported energy-absorbing beam; 31, first energy-absorbing beam section; 32, second energy-absorbing beam section; 33, third energy-absorbing beam section; 34, first flange of energy-absorbing beam; 35, second flange of energy-absorbing beam; 36, web of energy-absorbing beam; 4, stiffening plate; 5, first supporting beam section; 6, second supporting beam section. DETAILED DESCRIPTION

[0090] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0091] like Figure 1-5 As shown, the eccentrically supported energy-absorbing beam according to the embodiment of the present invention includes a beam along a first direction (such as Figure 1 The first energy absorbing beam section 31, the second energy absorbing beam section 32 and the third energy absorbing beam section 33 are sequentially connected (from left to right as shown). Specifically, Figure 1 As shown, the right end of the first energy absorbing beam section 31 is connected to the left end of the second energy absorbing beam section 32 , and the right end of the second energy absorbing beam section 32 is connected to the left end of the third energy absorbing beam section 33 .

[0092] like Figure 1 , Figure 4 and Figure 5 As shown, each of the first energy absorbing beam section 31, the second energy absorbing beam section 32 and the third energy absorbing beam section 33 includes a first energy absorbing beam flange 34, a second energy absorbing beam flange 35 and an energy absorbing beam web 36. The first energy absorbing beam flange 34 extends along a first direction, and the first energy absorbing beam flange 34 of the first energy absorbing beam section 31 extends in a second direction (such as Figure 2 The dimension of the first flange 34 of the energy absorbing beam of the third energy absorbing beam segment 33 in the second direction gradually decreases along the direction toward the second energy absorbing beam segment 32, and the second direction is orthogonal to the first direction.

[0093] Specifically, the size of the first flange 34 of the energy absorbing beam in the second direction is the same as the size of the second flange 35 of the energy absorbing beam in the second direction. The first flange 34 and the second flange 35 of the energy absorbing beam can be made of Q235 steel or Q345 steel, and the web 36 of the energy absorbing beam can also be made of Q235 steel or Q345 steel.

[0094] like Figure 2As shown, the size of the left end of the first flange 34 of the energy absorbing beam of the first energy absorbing beam section 31 in the second direction is larger than the size of the right end in the second direction, and the size of the right end of the first flange 34 of the energy absorbing beam of the third energy absorbing beam section 33 in the second direction is larger than the size of the left end in the second direction. The size of the first flange 34 of the energy absorbing beam of the second energy absorbing beam section 32 in the second direction is constant in the left and right directions.

[0095] The second flange 35 of the energy absorbing beam and the first flange 34 of the energy absorbing beam are arranged opposite to each other. The second flange 35 of the energy absorbing beam extends along the first direction. The size of the second flange 35 of the energy absorbing beam of the first energy absorbing beam section 31 in the second direction gradually decreases along the direction toward the second energy absorbing beam section 32. The size of the second flange 35 of the energy absorbing beam of the third energy absorbing beam section 33 in the second direction gradually decreases along the direction toward the second energy absorbing beam section 32.

[0096] The energy absorbing beam web 36 extends along the first direction, and the energy absorbing beam web 36 connects the bottom surface of the first flange 34 of the energy absorbing beam and the top surface of the second flange 35 of the energy absorbing beam. Figure 1 As shown, the upper side of the energy absorbing beam web 36 is connected to the bottom surface of the energy absorbing beam first flange 34, and the lower side of the energy absorbing beam web 36 is connected to the top surface of the energy absorbing beam second flange 35. The energy absorbing beam web 36 and the energy absorbing beam first flange 34 and the energy absorbing beam second flange 35 can be connected by welding.

[0097] The first energy absorbing beam section 31, the second energy absorbing beam section 32 and the third energy absorbing beam section 33 satisfy: M S ≡μ·V S ;in,

[0098] M S is the full plastic bending bearing capacity of the first energy absorbing beam segment 31 or the third energy absorbing beam segment 33;

[0099] V S is the full plastic shear bearing capacity of the second energy absorbing beam segment 32;

[0100] μ is a constant coefficient, and its value range is 1.1≤μ≤1.25;

[0101] ≡ means that when the condition on the right side of the symbol “≡” is met, the result on the left side of the symbol “≡” occurs.

[0102] The eccentrically supported energy absorbing beam of the embodiment of the present invention, the first energy absorbing beam section 31, the second energy absorbing beam section 32 and the third energy absorbing beam section 33 meet M S ≡μ·V SWhen the energy absorption beam web 36 of the first energy absorption beam section 31 and the energy absorption beam web 36 of the third energy absorption beam section 33 undergo plastic deformation and energy consumption first under the action of earthquake, and the energy absorption beam web 36 of the second energy absorption beam section 32 undergoes plastic deformation and energy consumption second, and the energy absorption beam first flange 34 and the energy absorption beam second flange 35 of the first energy absorption beam section 31 and the first flange and the energy absorption beam second flange 35 of the third energy absorption beam section 33 undergo plastic deformation last. Therefore, the energy absorption capacity of the eccentrically supported energy absorption beam in the embodiment of the present invention can be fully utilized, and the plastic deformation of the energy absorption beam flange and the web at the same time can be avoided, which can avoid the rigidity of the overall building structure decreasing too fast, and avoid the deformation of the overall building structure increasing too fast, thereby reducing the impact of earthquake disasters on the overall building structure.

[0103] In some embodiments, the first energy absorbing beam segment 31, the second energy absorbing beam segment 32 and the third energy absorbing beam segment 33 satisfy:

[0104] M Rl ≥max(M sl1 , M sl2 ,......M sli ......., M sln );

[0105] M Rl / γ RE ≥η·max(M slE1 , M slE2 ,......M slEi ......, M slEn );

[0106] V Rl ≥max(V sl1 , V sl2 ,......V sli ......, V sln );

[0107] V Rl / γ RE ≥η·max(V slE1 , V slE2 ,......V slEi ......, V slEn );

[0108] N Rl ≥max(N sl1 , N sl2 ,......N sli ......., N sln );

[0109] N Rl / γ RE ≥η·max(N slE1 , NslE2 ,......N slEi ......, N slEn );in,

[0110] M Rl 、V Rl 、N Rl is the design value of the moment resistance, shear resistance and axial force resistance of the first energy absorbing beam segment 31, or the design value of the moment resistance, shear resistance and axial force resistance of the second energy absorbing beam segment 32, or the design value of the moment resistance, shear resistance and axial force resistance of the third energy absorbing beam segment 33;

[0111] M sli 、V sli 、N sli In the case of non-seismic working conditions, the design values ​​of the basic combined effect bending moment, shear force, and axial force of the load of the first energy absorbing beam section 31, or the design values ​​of the basic combined effect bending moment, shear force, and axial force of the load of the second energy absorbing beam section 32, or the design values ​​of the basic combined effect bending moment, shear force, and axial force of the load of the third energy absorbing beam section 33;

[0112] M slEi 、V slEi 、N slEi In earthquake conditions, the design values ​​of the basic combined effect bending moment, shear force, and axial force of the load of the first energy absorbing beam section 31, or the design values ​​of the basic combined effect bending moment, shear force, and axial force of the load of the second energy absorbing beam section 32, or the design values ​​of the basic combined effect bending moment, shear force, and axial force of the load of the third energy absorbing beam section 33;

[0113] γ RE is the seismic adjustment factor of bearing capacity;

[0114] η is a constant magnification factor, which is greater than 1.0.

[0115] Specifically, the first energy absorbing beam section 31, the second energy absorbing beam section 32 and the third energy absorbing beam section 33 are designed to satisfy the above formula, so that the structures of the first energy absorbing beam section 31, the second energy absorbing beam section 32 and the third energy absorbing beam section 33 are more solid and have better energy absorption capacity during earthquake action.

[0116] In some embodiments, the second energy absorbing beam section 32 satisfies: Rml ≥VSm·l2 / 2; where,

[0117] M Rml is the design value of the bending moment resistance of the second energy absorbing beam section 32;

[0118] V Sm is the full plastic shear bearing capacity of the second energy absorbing beam segment 32;

[0119] l2 is the dimension of the second energy absorbing beam section 32 in the first direction.

[0120] Specifically, the second energy absorbing beam section 32 should satisfy the following requirements during design:

[0121] M Rml ≥V Sm l2 / 2 and M Rl ≥max(M sl1 , V sl2 ,......M sli ......, M sln ),

[0122] M Rl / γ RE ≥η·max(M slE1， V slE2 ,......M slEi ......, M slEn ),

[0123] V Rl ≥max(V sl1 , V sl2 ,......V sli ......, V sln ),

[0124] V Rl / γ RE ≥η·max(V slE1 , V slE2 ,......V slEi ......, V slEn ),

[0125] N Rl ≥max(N sl1 , N sl2 ,......N sli ......, N sln ),

[0126] N Rl / γ RE ≥η·max(N slE1 , N slE2 ,......N slEi ......, N slEn ), so that the structures of the first energy absorbing beam section 31, the second energy absorbing beam section 32 and the third energy absorbing beam section 33 are more solid and have better energy absorbing capacity during earthquake action, and at the same time, the decreasing speed of the structural stiffness of the energy absorbing beam section can be reduced to avoid the first energy absorbing beam section 31, the second energy absorbing beam section 32 and the third energy absorbing beam section 33 from deforming too quickly, thereby reducing the impact of earthquake disasters on the overall building structure.

[0127] In some embodiments, the first energy absorbing beam section 31 is away from one end of the second energy absorbing beam section 32 in the first direction (eg Figure 1 The left end of the first energy absorbing beam section 31 shown in FIG. 1 ), or the end of the third energy absorbing beam section 33 away from the second energy absorbing beam section 32 in the first direction (such as Figure 1 The right end of the third energy absorbing beam section 33 shown in FIG. 3 satisfies:

[0128] in,

[0129] is a design value of the bending moment resistance of one end of the first energy absorbing beam section 31 away from the second energy absorbing beam section 32 in the first direction, or a design value of the bending moment resistance of one end of the third energy absorbing beam section 33 away from the second energy absorbing beam section 32 in the first direction;

[0130] V Sm is the full plastic shear bearing capacity of the second energy absorbing beam segment 32;

[0131] L is the total size of the first energy absorbing beam section 31, the second energy absorbing beam section 32 and the third energy absorbing beam section 33 in the first direction, L=2·l1+l2;

[0132] l1 is the size of the first energy absorbing beam section 31 or the third energy absorbing beam section 33 in the first direction;

[0133] l2 is the dimension of the second energy absorbing beam section 32 in the first direction.

[0134] Specifically, the left end of the first energy absorbing beam section 31 and the right end of the third energy absorbing beam section 33 satisfy The structures of the left end of the first energy absorbing beam section 31 and the right end of the third energy absorbing beam section 33 are made more solid. When an earthquake occurs, the left end of the first energy absorbing beam section 31 and the right end of the third energy absorbing beam section 33 are less affected by the earthquake, thereby reducing damage.

[0135] In some embodiments, the first energy absorbing beam segment 31 or the third energy absorbing beam segment 33 satisfies the following at any cross section in the first direction: in,

[0136] is the design value of the bending moment resistance at any cross section of the first energy absorbing beam section 31 or the third energy absorbing beam section 33 in the first direction;

[0137] V Sm is the full plastic shear bearing capacity of the second energy absorbing beam segment 32;

[0138] x is the distance between any cross section of the first energy absorbing beam section 31 or the third energy absorbing beam section 33 in the first direction and the middle position of the second energy absorbing beam section 32, and the value range of x is: l2 / 2<x<(l2 / 2+l1).

[0139] Specifically, the first energy absorbing beam section 31 or the third energy absorbing beam section 33 satisfies the following conditions at any cross section in the first direction: The structures of the first energy absorbing beam section 31 and the third energy absorbing beam section 33 are made more solid. When an earthquake occurs, the energy absorbing capacity of the first energy absorbing beam section 31 and the third energy absorbing beam section 33 is better.

[0140] In some embodiments, the size of the second energy absorbing beam section 32 in the first direction satisfies: L / 3≤l2≤L / 2; the size of the first energy absorbing beam section 31 or the third energy absorbing beam section 33 in the first direction satisfies: L / 4≤l1≤L / 3; wherein,

[0141] L is the total size of the first energy absorbing beam section 31, the second energy absorbing beam section 32 and the third energy absorbing beam section 33 in the first direction, L=2·l1+l2;

[0142] l1 is the size of the first energy absorbing beam section 31 or the third energy absorbing beam section 33 in the first direction;

[0143] l2 is the dimension of the second energy absorbing beam section 32 in the first direction.

[0144] Specifically, the second energy absorption beam section 32 satisfies: L / 3≤l2≤L / 2, and the first energy absorption beam section 31 or the third energy absorption beam section 33 satisfies: L / 4≤l1≤L / 3, so that when an earthquake occurs, the first energy absorption beam section 31, the second energy absorption beam section 32 and the third energy absorption beam section 33 can better dissipate the energy generated by the earthquake, reduce the speed of decrease of the structural stiffness of the first energy absorption beam section 31, the second energy absorption beam section 32 and the third energy absorption beam section 33, thereby avoiding excessive deformation of the first energy absorption beam section 31, the second energy absorption beam section 32 and the third energy absorption beam section 33 and reducing the impact of the earthquake disaster.

[0145] In some embodiments, the first energy absorbing beam section 31 has the first energy absorbing beam flange 34 or the second energy absorbing beam flange 35 away from one end of the second energy absorbing beam section 32 (eg, Figure 2 The left end of the first energy absorbing beam section 31 of the energy absorbing beam first flange 34 or the second energy absorbing beam flange 35 shown in the figure), or the left end of the first energy absorbing beam flange 34 or the second energy absorbing beam flange 35 of the third energy absorbing beam section 33 away from the second energy absorbing beam section 32 (as shown in the figure) Figure 2 The right end of the first flange 34 of the energy absorbing beam or the second flange 35 of the energy absorbing beam of the third energy absorbing beam section 33 shown in the figure satisfies:

[0146] b1=[h1·t w ·(0.29·μ·L-0.25·h1)] / [t f ·(h1+t f )];in,

[0147] b1 is the dimension of the first energy absorbing beam flange 34 or the second energy absorbing beam flange 35 of the first energy absorbing beam segment 31 away from the second energy absorbing beam segment 32, or the first energy absorbing beam flange 34 or the second energy absorbing beam flange 35 of the third energy absorbing beam segment 33 away from the second energy absorbing beam segment 32 in the second direction;

[0148] t f is the size of the first flange 34 or the second flange 35 of the energy absorbing beam in the up-down direction. Figure 1 ) is orthogonal to the first direction and the second direction;

[0149] t w is the dimension of the energy dissipation beam web 36 in the second direction;

[0150] h1 is the dimension of the energy dissipation beam web 36 in the up-down direction;

[0151] l1 is the size of the first energy absorbing beam section 31 or the third energy absorbing beam section 33 in the first direction;

[0152] l2 is the size of the second energy absorbing beam section 32 in the first direction;

[0153] L is the total size of the first energy absorbing beam segment 31 , the second energy absorbing beam segment 32 and the third energy absorbing beam segment 33 in the first direction, L=2*l1+l2.

[0154] Specifically, the left end of the first energy absorbing beam flange 34 or the second energy absorbing beam flange 35 of the first energy absorbing beam section 31 and the right end of the first energy absorbing beam flange 34 or the second energy absorbing beam flange 35 of the third energy absorbing beam section 33 satisfy: b1 = [h1·t w ·(0.29·μ·L-0.25·h1)] / [t f ·(h1+t f )], so that when an earthquake occurs, the deformation speed of the left end of the first flange 34 or the second flange 35 of the first energy absorbing beam section 31 and the right end of the first flange 34 or the second flange 35 of the third energy absorbing beam section 33 can be effectively reduced, and the calculation of the dimensions of the left end of the first flange 34 or the second flange 35 of the first energy absorbing beam section 31 and the right end of the first flange 34 or the second flange 35 of the third energy absorbing beam section 33 in the second direction is simple.

[0155] In some embodiments, the first energy absorbing beam flange 34 or the second energy absorbing beam flange 35 of the second energy absorbing beam section 32 satisfies:

[0156] b2=[h1·t w ·(0.29·μ·l2-0.25·h1)] / [t f ·(h1+t f )];in,

[0157] b2 is the size of the first flange 34 or the second flange 35 of the second energy absorbing beam section 32 in the second direction;

[0158] t f is the size of the first flange 34 of the energy absorbing beam or the second flange 35 of the energy absorbing beam in the up-down direction;

[0159] t w is the dimension of the energy dissipation beam web 36 in the second direction;

[0160] h1 is the dimension of the energy dissipation beam web 36 in the up-down direction;

[0161] l2 is the dimension of the second energy absorbing beam section 32 in the first direction.

[0162] Specifically, the first energy absorbing beam flange 34 or the second energy absorbing beam flange 35 of the second energy absorbing beam section 32 satisfies:

[0163] b2=[h1·t w ·(0.29·μ·l2-0.25·h1)] / [t f ·(h1+t f )], so that when an earthquake occurs, the deformation speed of the first flange 34 or the second flange 35 of the energy absorbing beam of the second energy absorbing beam section 32 can be effectively reduced, and the influence of the first flange 34 or the second flange 35 of the energy absorbing beam of the second energy absorbing beam section 32 on the earthquake disaster can be reduced.

[0164] In some embodiments, the dimension of any position of the first energy absorbing beam flange 34 or the second energy absorbing beam flange 35 of the first energy absorbing beam segment 31 in the second direction, or the dimension of any position of the first energy absorbing beam flange 34 or the second energy absorbing beam flange 35 of the third energy absorbing beam segment 33 in the second direction satisfies:

[0165] b x =[h1·t w ·(0.58·μ·x-0.25·h1)] / [t f ·(h1+t f )];in,

[0166] b x b2 is the dimension of any position of the first flange 34 or the second flange 35 of the first energy absorbing beam section 31 in the second direction, or the dimension of any position of the first flange 34 or the second flange 35 of the third energy absorbing beam section 33 in the second direction, b2<b x <b1;

[0167] t f is the size of the first flange 34 of the energy absorbing beam or the second flange 35 of the energy absorbing beam in the up-down direction;

[0168] t w is the dimension of the energy dissipation beam web 36 in the second direction;

[0169] h1 is the dimension of the energy dissipation beam web 36 in the up-down direction;

[0170] x is the distance between any cross section of the first energy absorbing beam section 31 or the third energy absorbing beam section 33 in the first direction and the middle position of the second energy absorbing beam section 32, and the value range of x is: l2 / 2<x<(l2 / 2+l1).

[0171] Specifically, the dimension of any position of the first energy absorbing beam flange 34 or the second energy absorbing beam flange 35 of the first energy absorbing beam section 31 in the second direction, or the dimension of any position of the first energy absorbing beam flange 34 or the second energy absorbing beam flange 35 of the third energy absorbing beam section 33 in the second direction satisfies:

[0172] b x =[h1·t w ·(0.58·μ·x-0.25·h1)] / [t f ·(h1+t f )], so that the first energy absorbing beam section 31 and the third energy absorbing beam section 33 of the energy absorbing beam first flange 34 or the energy absorbing beam second flange 35 can better dissipate the energy generated by the earthquake when an earthquake occurs, thereby reducing the impact of the earthquake disaster on the overall building structure.

[0173] The eccentric support structure according to the embodiment of the present invention comprises a first non-energy absorbing beam section 1, a second non-energy absorbing beam section 2 and an eccentric support energy absorbing beam 3. The first non-energy absorbing beam section 1 and the second non-energy absorbing beam section 2 extend along a first direction, and one end of the first non-energy absorbing beam section 1 (such as Figure 1 The right end of the first non-energy absorbing beam section 1 shown in FIG. 1 ) and one end of the eccentrically supported energy absorbing beam 3 (as shown in FIG. Figure 1 The left end of the eccentrically supported energy-absorbing beam 3 shown in the figure) is connected to one end of the second non-energy-absorbing beam section 2 (as shown in the figure). Figure 1 The left end of the second non-energy absorbing beam section 2 shown in FIG. 1 ) and the other end of the eccentrically supported energy absorbing beam 3 (as shown in FIG. Figure 1 The right end of the eccentrically supported energy-absorbing beam 3 shown is connected.

[0174] The eccentric support member of the embodiment of the present invention can fully utilize the energy absorption capacity of the eccentrically supported energy absorption beam 3, avoid simultaneous plastic deformation of the flange and web of the energy absorption beam, which may cause the stiffness of the overall building structure to decrease too quickly, and avoid excessive increase in deformation of the overall building structure, thereby reducing the impact of earthquake disasters on the overall building structure.

[0175] In some embodiments, the first non-energy absorbing beam segment 1 or the second non-energy absorbing beam segment 2 satisfies:

[0176] MRb ≥max(M sb1 , M sb2 ,......M sbi ......, M sbn );

[0177] M Rb / γ RE ≥η·max(α1·M sbE1 , α2·M sbE2 ,.......α i ·M sbEi ......, α n ·M sbEn );

[0178] V Rb ≥max(V sb1， V sb2 ,......V sbi ......, V sbn );

[0179] V Rb / γ RE ≥η·max(α1·V sbE1 , α2·V sbE2 , ... α i ·V sbEi ......, α n ·V sbEn );

[0180] NR b ≥max(N sb1 , N sb2 ,......N sbi ......, N sbn );

[0181] NR b / γ RE ≥η·max(α1·N sbE1 ,α2·N sbE2 , ... α i ·N sbEi ......, α n ·N sbEn );

[0182] in,

[0183] M Rb 、V Rb 、N Rb is the design value of the resistance of the bending moment, shear force and axial force of the first non-energy absorbing beam segment 1, or the design value of the resistance of the bending moment, shear force and axial force of the second non-energy absorbing beam segment 2;

[0184] V sbi 、V sbi 、N sbi For non-seismic conditions, the design values ​​of the basic combined effect bending moment, shear force, and axial force of the loads of the first non-energy-absorbing beam segment 1, or the design values ​​of the basic combined effect bending moment, shear force, and axial force of the loads of the second non-energy-absorbing beam segment 2;

[0185] M sbEi , Vs bEi 、N sbEi Under earthquake conditions, the design values ​​of the basic combined effect bending moment, shear force and axial force of the load of the first non-energy absorbing beam section 1, or the design values ​​of the basic combined effect bending moment, shear force and axial force of the load of the second non-energy absorbing beam section 2;

[0186] M Sl 、M Sm 、M Sr are the full plastic bending bearing capacities of the first energy absorbing beam segment 31, the second energy absorbing beam segment 32, and the third energy absorbing beam segment 33 respectively;

[0187] V Sl 、V Sm 、V sr are the full plastic shear bearing capacities of the first energy absorbing beam segment 31, the second energy absorbing beam segment 32, and the third energy absorbing beam segment 33 respectively;

[0188] M sllEi , VsllEi The design values ​​of the basic combined effect bending moment and shear force of the first energy-absorbing beam section 31 under earthquake conditions;

[0189] M smlEi 、V smlEi Under earthquake conditions, the design values ​​of the basic combined effect bending moment and shear force of the load of the second energy-absorbing beam section 32;

[0190] M srlEi 、V srlEi The design values ​​of the basic combined effect bending moment and shear force of the load of the third energy-absorbing beam section 33 under earthquake conditions;

[0191] γ RE Bearing capacity seismic adjustment factor;

[0192] η is a constant magnification factor, which is greater than 1.0.

[0193] Specifically, the first non-energy absorbing beam segment 1 and the second non-energy absorbing beam segment 2 satisfy the above formula, so that the structures of the first non-energy absorbing beam segment 1 and the second non-energy absorbing beam segment 2 are more solid, and the right end of the first non-energy absorbing beam segment 1 is firmly connected to the left end of the eccentrically supported energy absorbing beam 3, and the left end of the second non-energy absorbing beam segment 2 is firmly connected to the right end of the eccentrically supported energy absorbing beam 3.

[0194] In some embodiments, Figure 3 As shown, each of the first non-energy absorbing beam segment 1 and the second non-energy absorbing beam segment 2 includes a non-energy absorbing beam first flange 11, a non-energy absorbing beam second flange 12 and a non-energy absorbing beam web 13. The non-energy absorbing beam first flange 11, the non-energy absorbing beam second flange 12 and the non-energy absorbing beam web 13 extend along a first direction, and the non-energy absorbing beam web 13 connects the bottom surface of the non-energy absorbing beam first flange 11 and the top surface of the non-energy absorbing beam second flange 12.

[0195] Specifically, Figure 2 As shown, the size of the right end of the non-energy absorbing beam first flange 11 or the non-energy absorbing beam second flange 12 of the first non-energy absorbing beam section 1 in the second direction gradually decreases in the right direction, and the size of the left end of the non-energy absorbing beam first flange 11 or the non-energy absorbing beam second flange 12 of the second non-energy absorbing beam section 2 in the second direction gradually decreases in the left direction.

[0196] The right end of the first non-energy absorbing beam flange 11 of the first non-energy absorbing beam section 1 is connected to the left end of the first energy absorbing beam flange 34 of the first energy absorbing beam section 31, and the right end of the second non-energy absorbing beam flange 12 of the first non-energy absorbing beam section 1 is connected to the left end of the second energy absorbing beam flange 35 of the first energy absorbing beam section 31. The right end of the non-energy absorbing beam web 13 of the first non-energy absorbing beam section 1 is connected to the left end of the energy absorbing beam web 36 of the first energy absorbing beam section 31.

[0197] The left end of the first non-energy absorbing beam flange 11 of the second non-energy absorbing beam section 2 is connected to the right end of the first energy absorbing beam flange 34 of the third energy absorbing beam section 33, and the left end of the second non-energy absorbing beam flange 12 of the second non-energy absorbing beam section 2 is connected to the right end of the second energy absorbing beam flange 35 of the third energy absorbing beam section 33. The left end of the non-energy absorbing beam web 13 of the second non-energy absorbing beam section 2 is connected to the right end of the energy absorbing beam web 36 of the third energy absorbing beam section 33.

[0198] The size of the first flange 11 of the non-energy absorbing beam in the second direction is equal to the size of the second flange 12 of the non-energy absorbing beam in the second direction, so that the first flange 11 of the non-energy absorbing beam and the second flange 12 of the non-energy absorbing beam can be prefabricated uniformly. The size of the first flange 11 of the non-energy absorbing beam in the second direction is greater than the size of the first flange 34 of the energy absorbing beam in the second direction, and the size of the second flange 12 of the non-energy absorbing beam in the second direction is greater than the size of the second flange 35 of the energy absorbing beam in the second direction.

[0199] The size of the non-energy absorbing beam first flange 11 in the vertical direction is the same as the size of the energy absorbing beam first flange 34 in the vertical direction. The size of the non-energy absorbing beam web 13 in the second direction is the same as the size of the energy absorbing beam web 36 in the second direction. Therefore, the structures of the first non-energy absorbing beam section 1 and the second non-energy absorbing beam section 2 are simple.

[0200] In some embodiments, the eccentric support member also includes a stiffening plate 4, at least two of which are provided, and at least two stiffening plates 4 are respectively provided on both sides of the web 36 of the energy absorbing beam in the second direction, and a side surface of the stiffening plate 4 in the second direction is connected to the side surface of the web 36 of the energy absorbing beam, the upper end of the stiffening plate 4 is connected to the bottom surface of the first flange 34 of the energy absorbing beam, and the lower end of the stiffening plate 4 is connected to the top surface of the second flange 35 of the energy absorbing beam.

[0201] Specifically, Figure 2 As shown, at least two stiffening plates 4 are divided into multiple groups, and the multiple groups of stiffening plates 4 are arranged at intervals along the left-right direction. Each group of stiffening plates 4 includes two stiffening plates, and the two stiffening plates 4 are respectively arranged on both sides of the energy absorbing beam web 36 and the non-energy absorbing beam web 13 in the second direction. Therefore, the stiffening plates 4 strengthen the structural strength of the first non-energy absorbing beam section 1, the second non-energy absorbing beam section 2 and the eccentrically supported energy absorbing beam 3, so as to make the structure of the eccentrically supported component of the embodiment of the present invention more solid.

[0202] In some embodiments, the eccentric support member further includes a first support beam segment 5 and a second support beam segment 6. One end of the first support beam segment 5 (eg Figure 1 The upper end of the first supporting beam section 5 shown in the figure) and the end of the first non-energy absorbing beam section 1 close to the eccentric supporting energy absorbing beam 3 (as shown in the figure) Figure 1 The bottom surface of the first non-energy absorbing beam section 1 is connected to the right end of the first supporting beam section 5. Figure 1 The lower end of the first supporting beam section 5 shown in FIG. 1 extends downward and is inclined in a direction away from the eccentric supporting energy absorbing beam 3. One end of the second supporting beam section 6 (as shown in FIG. 1 ) Figure 1 The upper end of the second supporting beam section 6 shown in the figure) and the end of the second non-energy absorbing beam section 2 close to the eccentric supporting energy absorbing beam 3 (as shown in the figure) Figure 1 The bottom surface of the second non-energy absorbing beam section 2 is connected to the left end of the second supporting beam section 6. Figure 1 The lower end of the second supporting beam section 6 shown is inclined in a downward direction and in a direction away from the eccentrically supported energy-absorbing beam 3 .

[0203] Specifically, Figure 1 and Figure 2 As shown, a stiffening plate 4 is provided at the intersection of the first supporting beam section 5, the first non-energy absorbing beam section 1 and the first energy absorbing beam section 31, and a stiffening plate 4 is provided at the intersection of the second supporting beam section 6, the second non-energy absorbing beam section 2 and the third energy absorbing beam section 33. Thus, the structure of the eccentric support member of the embodiment of the present invention is stable.

[0204] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0205] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0206] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0207] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0208] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0209] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. An eccentrically supported energy-absorbing beam, characterized in that: The invention comprises a first energy absorbing beam segment (31), a second energy absorbing beam segment (32) and a third energy absorbing beam segment (33) which are sequentially connected along a first direction, wherein each of the first energy absorbing beam segment (31), the second energy absorbing beam segment (32) and the third energy absorbing beam segment (33) comprises: an energy absorbing beam first flange (34), the energy absorbing beam first flange (34) extending along the first direction, the size of the energy absorbing beam first flange (34) of the first energy absorbing beam section (31) in the second direction gradually decreases in the direction toward the second energy absorbing beam section (32), the size of the energy absorbing beam first flange (34) of the third energy absorbing beam section (33) in the second direction gradually decreases in the direction toward the second energy absorbing beam section (32), and the second direction is orthogonal to the first direction; an energy absorbing beam second flange (35), the energy absorbing beam second flange (35) and the energy absorbing beam first flange (34) being arranged opposite to each other, the energy absorbing beam second flange (35) extending along the first direction, the size of the energy absorbing beam second flange (35) of the first energy absorbing beam section (31) in the second direction gradually decreasing in the direction toward the second energy absorbing beam section (32), and the size of the energy absorbing beam second flange (35) of the third energy absorbing beam section (33) in the second direction gradually decreasing in the direction toward the second energy absorbing beam section (32); An energy absorbing beam web (36), the energy absorbing beam web (36) extending along the first direction, the energy absorbing beam web (36) connecting the bottom surface of the first flange (34) of the energy absorbing beam and the top surface of the second flange (35) of the energy absorbing beam; The first energy absorbing beam section (31), the second energy absorbing beam section (32) and the third energy absorbing beam section (33) satisfy: M S ≡μ·V S ;in, M S is the full plastic bending bearing capacity of the first energy absorbing beam section (31) or the third energy absorbing beam section (33); V S is the full plastic shear bearing capacity of the second energy absorbing beam section (32); μ is a constant coefficient, and its value range is 1.1≤μ≤1.25; ≡ means equivalent to; The first energy absorbing beam section (31), the second energy absorbing beam section (32) and the third energy absorbing beam section (33) satisfy: M Rl ≥max(M sl1 ,M sl2 ,……M sli ……,M sln ); M Rl / γ RE ≥η·max(M slE1 ,M slE2 ,……M slEi ……,M slEn ); V Rl ≥max(V sl1 ,V sl2 ,……V sli ……,V sln ); V Rl / γ RE ≥η·max(V slE1 ,V slE2 ,……V slEi ……,V slEn ); N Rl ≥max(N sl1 ,N sl2 ,……N sli ……,N sln ); N Rl / γ RE ≥η·max(N slE1 , N slE2 , ... N slEi ..., N slEn );in, M Rl 、V Rl 、N Rl is the design value of the bending moment resistance, shear force resistance and axial force resistance of the first energy absorbing beam section (31), or the design value of the bending moment resistance, shear force resistance and axial force resistance of the second energy absorbing beam section (32), or the design value of the bending moment resistance, shear force resistance and axial force resistance of the third energy absorbing beam section (33); M sli 、V sli 、N sli In a non-seismic working condition, the design values ​​of the basic combined load effect bending moment, shear force and axial force of the first energy absorbing beam section (31), or the design values ​​of the basic combined load effect bending moment, shear force and axial force of the second energy absorbing beam section (32), or the design values ​​of the basic combined load effect bending moment, shear force and axial force of the third energy absorbing beam section (33); M slEi 、V slEi 、N slEi In an earthquake condition, the design values ​​of the basic combined effect bending moment, shear force and axial force of the load of the first energy absorbing beam section (31), or the design values ​​of the basic combined effect bending moment, shear force and axial force of the load of the second energy absorbing beam section (32), or the design values ​​of the basic combined effect bending moment, shear force and axial force of the load of the third energy absorbing beam section (33); γ RE is the seismic adjustment factor of bearing capacity; η is a constant magnification factor, greater than 1.0; The second energy absorbing beam section (32) satisfies: M Rml ≥V Sm l2 / 2; where M Rml is the design value of the bending moment resistance of the second energy absorbing beam section (32); V Sm is the full plastic shear bearing capacity of the second energy absorbing beam section (32); l2 is the size of the second energy absorbing beam section (32) in the first direction; An end of the first energy absorbing beam section (31) away from the second energy absorbing beam section (32) in the first direction, or an end of the third energy absorbing beam section (33) away from the second energy absorbing beam section (32) in the first direction satisfies: in, is a design value of the bending moment resistance of an end of the first energy absorbing beam section (31) away from the second energy absorbing beam section (32) in the first direction, or a design value of the bending moment resistance of an end of the third energy absorbing beam section (33) away from the second energy absorbing beam section (32) in the first direction; V Sm is the full plastic shear bearing capacity of the second energy absorbing beam section (32); L is the total size of the first energy absorbing beam section (31), the second energy absorbing beam section (32) and the third energy absorbing beam section (33) in the first direction, L=2·l1+l2; l1 is the dimension of the first energy absorbing beam section (31) or the third energy absorbing beam section (33) in the first direction; l2 is the size of the second energy absorbing beam section (32) in the first direction; The first energy absorbing beam section (31) or the third energy absorbing beam section (33) satisfies the following conditions at any cross section in the first direction: in, is a design value of bending moment resistance at any cross section of the first energy absorbing beam section (31) or the third energy absorbing beam section (33) in the first direction; V Sm is the full plastic shear bearing capacity of the second energy dissipation beam segment (32); x is the distance between any cross section of the first energy absorbing beam section (31) or the third energy absorbing beam section (33) in the first direction and the middle position of the second energy absorbing beam section (32), and the value range of x is: l2 / 2 <x<(l2 / 2+l1)。 2. The eccentrically supported energy-absorbing beam according to claim 1, characterized in that: The dimension of the second energy absorbing beam section (32) in the first direction satisfies: L / 3≤l2≤L / 2; the dimension of the first energy absorbing beam section (31) or the third energy absorbing beam section (33) in the first direction satisfies: L / 4≤l1≤L / 3; wherein, L is the total size of the first energy absorbing beam section (31), the second energy absorbing beam section (32) and the third energy absorbing beam section (33) in the first direction, L=2·l1+l2; l1 is the dimension of the first energy absorbing beam section (31) or the third energy absorbing beam section (33) in the first direction; l2 is the dimension of the second energy absorbing beam section (32) in the first direction.

3. The eccentrically supported energy-absorbing beam according to claim 1, characterized in that: An end of the first energy absorbing beam flange (34) or the second energy absorbing beam flange (35) of the first energy absorbing beam segment (31) away from the second energy absorbing beam segment (32), or an end of the first energy absorbing beam flange (34) or the second energy absorbing beam flange (35) of the third energy absorbing beam segment (33) away from the second energy absorbing beam segment (32) satisfies: b1=[h1·t w ·(0.29·μ·L-0.25·h1)] / [t f ·(h1+t f )];in, b1 is a dimension in the second direction of an end of the first energy absorbing beam flange (34) or the second energy absorbing beam flange (35) of the first energy absorbing beam segment (31) away from the second energy absorbing beam segment (32), or an end of the first energy absorbing beam flange (34) or the second energy absorbing beam flange (35) of the third energy absorbing beam segment (33) away from the second energy absorbing beam segment (32); t f is the size of the first flange (34) of the energy absorbing beam or the second flange (35) of the energy absorbing beam in the up-down direction, wherein the up-down direction is orthogonal to the first direction and the second direction; t w is the dimension of the energy dissipation beam web (36) in the second direction; h1 is the dimension of the energy absorbing beam web (36) in the up-down direction; l1 is the dimension of the first energy absorbing beam section (31) or the third energy absorbing beam section (33) in the first direction; l2 is the size of the second energy absorbing beam section (32) in the first direction; L is the total size of the first energy absorbing beam section (31), the second energy absorbing beam section (32) and the third energy absorbing beam section (33) in the first direction, L=2*l1+l2.

4. The eccentrically supported energy-absorbing beam according to claim 3, characterized in that: The first energy absorbing beam flange (34) or the second energy absorbing beam flange (35) of the second energy absorbing beam section (32) satisfies: b2=[h1·t w ·(0.29·μ·l2-0.25·h1)] / [t f ·(h1+t f )];in, b2 is the dimension of the first flange (34) of the energy absorbing beam or the second flange (35) of the energy absorbing beam of the second energy absorbing beam section (32) in the second direction; t f is the size of the first flange (34) of the energy dissipation beam or the second flange (35) of the energy dissipation beam in the up-down direction; t w is the dimension of the energy dissipation beam web (36) in the second direction; h1 is the dimension of the energy absorbing beam web (36) in the up-down direction; l2 is the dimension of the second energy absorbing beam section (32) in the first direction.

5. The eccentrically supported energy-absorbing beam according to claim 4, characterized in that: The dimension of any position of the first flange (34) or the second flange (35) of the energy absorbing beam of the first energy absorbing beam section (31) in the second direction, or the dimension of any position of the first flange (34) or the second flange (35) of the energy absorbing beam of the third energy absorbing beam section (33) in the second direction satisfies: b x =[h1·t w ·(0.58·μ·x-0.25·h1)] / [t f ·(h1+t f )];in, b x b2 is the size of any position of the first flange (34) or the second flange (35) of the energy absorbing beam of the first energy absorbing beam section (31) in the second direction, or the size of any position of the first flange (34) or the second flange (35) of the energy absorbing beam of the third energy absorbing beam section (33) in the second direction, x <b1;​ t f is the size of the first flange (34) of the energy dissipation beam or the second flange (35) of the energy dissipation beam in the up-down direction; t w is the dimension of the energy dissipation beam web (36) in the second direction; h1 is the dimension of the energy absorbing beam web (36) in the up-down direction; x is the distance between any cross section of the first energy absorbing beam section (31) or the third energy absorbing beam section (33) in the first direction and the middle position of the second energy absorbing beam section (32), and the value range of x is: l2 / 2 <x<(l2 / 2+l1)。 6. An eccentric support member, characterized in that: The invention comprises a first non-energy absorbing beam section (1), a second non-energy absorbing beam section (2) and an eccentrically supported energy absorbing beam (3), wherein the eccentrically supported energy absorbing beam (3) is the eccentrically supported energy absorbing beam (3) according to any one of claims 1 to 5, wherein the first non-energy absorbing beam section (1) and the second non-energy absorbing beam section (2) extend along the first direction, one end of the first non-energy absorbing beam section (1) is connected to one end of the eccentrically supported energy absorbing beam (3), and one end of the second non-energy absorbing beam section (2) is connected to the other end of the eccentrically supported energy absorbing beam (3).

7. The eccentric support member according to claim 6, characterized in that: The first non-energy absorbing beam section (1) or the second non-energy absorbing beam section (2) satisfies: M Rb ≥max(M sb1 ,M sb2 ,……M sbi ……,M sbn ); M Rb / c RE ≥η·max(α1·M sbE1 ,α2·M sbE2 ,……a i ·M sbEi ……,a n ·M sbEn ); V Rb ≥max(V sb1 ,V sb2 ,……V sbi ……,V sbn ); V Rb / c RE ≥η·max(α1·V sbE1 ,α2·V sbE2 ,……a i ·V sbEi ……,a n ·V sbEn ); N Rb ≥max(N sb1 ,N sb2 ,……N sbi ……,N sbn ); N Rb / c RE ≥η·max(α1·N sbE1 ,α2·N sbE2 ,……a i ·N sbEi ……,a n ·N sbEn ); in, M Rb 、V Rb 、N Rb is the design value of the bending moment, shear force and axial force resistance of the first non-energy absorbing beam section (1), or the design value of the bending moment, shear force and axial force resistance of the second non-energy absorbing beam section (2); M sbi 、V sbi 、N sbi In a non-seismic working condition, the design values ​​of the basic combined effect bending moment, shear force and axial force of the load of the first non-energy absorbing beam section (1), or the design values ​​of the basic combined effect bending moment, shear force and axial force of the load of the second non-energy absorbing beam section (2); M sbEi 、V sbEi 、N sbEi In an earthquake condition, the design values ​​of the basic combined effect bending moment, shear force and axial force of the load of the first non-energy absorbing beam section (1), or the design values ​​of the basic combined effect bending moment, shear force and axial force of the load of the second non-energy absorbing beam section (2); M Sl 、M Sm 、M Sr are respectively the full plastic bending bearing capacities of the first energy absorbing beam segment (31), the second energy absorbing beam segment (32), and the third energy absorbing beam segment (33); V Sl 、V Sm 、V Sr are respectively the full plastic shear bearing capacities of the first energy absorbing beam segment (31), the second energy absorbing beam segment (32), and the third energy absorbing beam segment (33); M sllEi 、V sllEi Under earthquake conditions, the design values ​​of the basic combined effect bending moment and shear force of the load of the first energy-absorbing beam section (31); M smlEi 、V smlEi Under earthquake conditions, the design values ​​of the basic combined effect bending moment and shear force of the load of the second energy-absorbing beam section (32); M srlEi 、V srlEi Under earthquake conditions, the design values ​​of the basic combined effect bending moment and shear force of the load of the third energy-absorbing beam section (33); γ RE Bearing capacity seismic adjustment factor; η is a constant magnification factor, which is greater than 1.

0.

8. The eccentric support member according to claim 6, characterized in that: Each of the first non-energy absorbing beam section (1) and the second non-energy absorbing beam section (2) comprises a non-energy absorbing beam first flange (11), a non-energy absorbing beam second flange (12) and a non-energy absorbing beam web (13); the non-energy absorbing beam first flange (11), the non-energy absorbing beam second flange (12) and the non-energy absorbing beam web (13) extend along the first direction; and the non-energy absorbing beam web (13) connects a bottom surface of the non-energy absorbing beam first flange (11) and a top surface of the non-energy absorbing beam second flange (12).

9. The eccentric support member according to claim 6, characterized in that: It also includes a stiffening plate (4), at least two of which are provided, and at least two of the stiffening plates (4) are respectively provided on both sides of the web (36) of the energy absorbing beam in the second direction, and a side surface of the stiffening plate (4) in the second direction is connected to a side surface of the web (36) of the energy absorbing beam, the upper end of the stiffening plate (4) is connected to the bottom surface of the first flange (34) of the energy absorbing beam, and the lower end of the stiffening plate (4) is connected to the top surface of the second flange (35) of the energy absorbing beam.

10. The eccentric support member according to claim 6, characterized in that: It also comprises a first supporting beam section (5) and a second supporting beam section (6), one end of the first supporting beam section (5) being connected to the bottom surface of one end of the first non-energy absorbing beam section (1) close to the eccentrically supported energy absorbing beam (3), the other end of the first supporting beam section (5) extending in a downward direction and tilting in a direction away from the eccentrically supported energy absorbing beam (3), one end of the second supporting beam section (6) being connected to the bottom surface of one end of the second non-energy absorbing beam section (2) close to the eccentrically supported energy absorbing beam (3), the other end of the second supporting beam section (6) being tilted in a downward direction and in a direction away from the eccentrically supported energy absorbing beam (3).

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