Buckle steel bar connecting structure, nuclear power plant building structure and manufacturing method
By designing a ring-buckle steel bar connection structure containing bent steel bars, the problem that the steel ring-buckle joint structure in the prior art cannot effectively absorb energy when vibrating, the effect of effectively absorbing and dissipating energy is achieved, and the seismic resistance needs of nuclear power plant buildings are met.
Patent Information
- Application Number
- CN202510503264.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-21
- Publication Date
- 2025-06-06
AI Technical Summary
The existing steel bar ring buckle connection structure cannot effectively absorb the energy generated by the vibration during vibration, resulting in failure of damage and cannot meet the needs of nuclear power plant construction.
A ring-buckle steel bar connection structure is designed, including longitudinal steel bars, floor energy-consuming steel bars, first shear wall energy-consuming steel bars and second shear wall energy-consuming steel bars, which produces elastic deformation during vibration through the bent parts, absorbs and dissipates energy.
This structure can effectively absorb the energy generated by building vibration, reduce the possibility of damage and failure, and meet the seismic resistance needs of nuclear power plant buildings.
Smart Images
Figure CN120100141A_ABST
Abstract
Description
Technical Field
[0001] The invention relates specifically to a ring-buckle steel bar connection structure, a nuclear power plant building structure and a manufacturing method of the nuclear power plant building structure. Background Art
[0002] The steel bar ring connection is a new type of steel bar connection structure. Compared with other connection forms, this connection structure has the characteristics of simple force transmission, convenient construction, and obvious economic advantages. Especially at the connection node between the shear wall and the floor slab, the use of the steel bar ring connection structure can effectively improve the construction efficiency.
[0003] However, the existing steel ring-buckle connection structure has the problem of weak energy absorption capacity, that is, when subjected to vibration, the existing steel ring-buckle connection structure cannot effectively absorb the energy generated by vibration, which easily leads to damage and failure, and is insufficient to meet the needs of the nuclear power plant construction field. Therefore, the steel ring-buckle connection has not yet been put into practical use in nuclear power plants. Summary of the invention
[0004] The technical problem to be solved by the present invention is to provide a buckled steel bar connection structure, a nuclear power plant building structure and a manufacturing method in view of the above-mentioned deficiencies in the prior art. The buckled steel bar connection structure has good energy dissipation performance.
[0005] According to an embodiment of the first aspect of the present invention, a ring-buckle steel bar connection structure is provided, which is used for connecting a first shear wall, a second shear wall and a floor slab, and the ring-buckle steel bar connection structure comprises: longitudinal steel bars, floor slab energy-absorbing steel bars, first shear wall energy-absorbing steel bars and second shear wall energy-absorbing steel bars; the second shear wall is located below the first shear wall, the floor slab is located on one side of the first shear wall and the second shear wall, and the floor slab is directly opposite to the interval between the first shear wall and the second shear wall, the longitudinal steel bars extend along a first horizontal direction, and the longitudinal steel bars are located between the first shear wall, the second shear wall and the floor slab; the floor slab energy-absorbing steel bars extend along a second horizontal direction, and the second horizontal direction is perpendicular to the first horizontal direction, one end of the floor slab energy-absorbing steel bars is connected to the longitudinal steel bars, and the other end is connected to the floor slab, the first shear wall energy-absorbing steel bars extend along a vertical direction, one end of the first shear wall energy-absorbing steel bars is connected to the longitudinal steel bars, and the other end is connected to the first shear wall, and a first bending portion is provided in the middle of the first shear wall energy-absorbing steel bars,
[0006] The second shear wall energy-absorbing steel bar extends in a vertical direction, one end of the second shear wall energy-absorbing steel bar is connected to the longitudinal steel bar, and the other end is connected to the second shear wall. A second bending portion is provided in the middle of the second shear wall energy-absorbing steel bar. When subjected to vibration, the first bending portion and the second bending portion produce elastic deformation to absorb and dissipate energy.
[0007] Preferably, the number of the first shear wall energy-absorbing steel bars, the second shear wall energy-absorbing steel bars and the floor slab energy-absorbing steel bars are all multiple, and the multiple floor slab energy-absorbing steel bars, the multiple first shear wall energy-absorbing steel bars and the multiple second shear wall energy-absorbing steel bars are alternately arranged along the extension direction of the longitudinal steel bars and connected to the longitudinal steel bars.
[0008] Preferably, the longitudinal reinforcement includes a first inserted reinforcement and a second inserted reinforcement, the first inserted reinforcement is located above the second inserted reinforcement, the first inserted reinforcement is connected to the second shear wall energy-absorbing reinforcement, and the second inserted reinforcement is connected to the first shear wall energy-absorbing reinforcement.
[0009] Preferably, the first shear wall energy-absorbing steel bar also includes a first energy-absorbing section and a first connecting rod section, the first connecting rod section extends downward in a vertical direction, the first energy-absorbing section is located below the first connecting rod section and the longitudinal steel bar, the first bending portion is located between the first connecting rod section and the first energy-absorbing section, one end of the first connecting rod section is connected to the first shear wall, and the other end is elastically connected to the first energy-absorbing section through the first bending portion, and the first energy-absorbing end is connected to the second inserted rib.
[0010] Preferably, the number of the first connecting rod segments is two, the two first connecting rod segments are spaced apart along the second horizontal direction, the number of the first bending portions is two, and the two first bending portions are bent inward relative to each other; the first energy absorbing segment is located between the two first bending portions, and the two ends of the first energy absorbing segment are respectively connected to the two first connecting rod segments through the two first bending portions.
[0011] Preferably, the first energy-absorbing section, the two first connecting rod sections and the two first bent portions enclose a first insertion cavity, and the longitudinal steel bar runs through the first insertion cavity.
[0012] Preferably, the second shear wall energy-absorbing steel bars also include a second energy-absorbing section and a second connecting rod section, the second connecting rod section extends upward in the vertical direction, the second energy-absorbing section is located above the second connecting rod section and the longitudinal steel bars, the second bending portion is located between the second connecting rod section and the second energy-absorbing section, one end of the second connecting rod section is connected to the second shear wall, and the other end is elastically connected to the second energy-absorbing section via the second bending portion, and the second energy-absorbing section is connected to the first inserted bar.
[0013] Preferably, the number of the second connecting rod segments is two, the two second connecting rod segments are spaced apart along the second horizontal direction, and the number of the second bending portions is two, the two second bending portions are bent inward relative to each other; the second energy absorbing segment is located between the two second bending portions, and the two ends of the second energy absorbing segment are respectively connected to the two second connecting rod segments through the two second bending portions.
[0014] Preferably, the second energy-absorbing section, the two second connecting rod sections and the two second bent portions enclose a second insertion cavity, the second insertion cavity is aligned with the first insertion cavity portion of the first shear wall energy-absorbing steel bars, and the longitudinal steel bars pass through the first insertion cavity and the second insertion cavity in sequence.
[0015] Preferably, the number of the first inserted bars is two or more, and the two or more first inserted bars are arranged along the second horizontal direction; the number of the second inserted bars is two or more, and the two or more second inserted bars are arranged along the second horizontal direction, and the number of the second inserted bars is the same as the number of the first inserted bars, and multiple second inserted bars correspond one-to-one to multiple first inserted bars, and the side away from the floor slab is set as the target side, and the first inserted bars and the second inserted bars on the target side are both connected to the energy-absorbing steel bars of the floor slab.
[0016] Preferably, the floor slab energy-absorbing steel bars include a third energy-absorbing section, a third bending portion and a third connecting rod section, the third connecting rod section extends along the second horizontal direction, the third energy-absorbing section is arranged opposite to the floor slab and is located on the outside of the longitudinal steel bars, the third bending portion is located between the third connecting rod section and the third energy-absorbing section, one end of the third connecting rod section is connected to the floor slab, and the other end is connected to the third energy-absorbing section through the third bending portion, and the third energy-absorbing section is connected to the first inserted rib and the second inserted rib located on the target side.
[0017] Preferably, the number of the third connecting rod segments is two, and the two connecting rod segments are arranged at intervals in the vertical direction. The number of the third bending portions is two, and the two third bending portions are arranged opposite to each other in the vertical direction and bent outward. The third energy absorption section extends in the vertical direction, and the third energy absorption section is located between the two third bending portions. The two ends of the third energy absorption section are respectively connected to the two third connecting rod segments through the two third bending portions.
[0018] Preferably, the third energy-absorbing section, the two third connecting rod sections and the two third bent portions enclose a third insertion cavity; the third insertion cavity is partially aligned with the first insertion cavity of the first shear wall energy-absorbing steel bar and the second insertion cavity of the second shear wall energy-absorbing steel bar, and the longitudinal steel bar passes through the first insertion cavity, the second insertion cavity and the third insertion cavity in sequence, wherein the longitudinal steel bar partially passes through the third insertion cavity, that is, the first insertion bar and the second insertion bar located on the target side pass through the third insertion cavity.
[0019] According to an embodiment of the second aspect of the present invention, there is provided a nuclear power plant building structure, comprising: a first shear wall, a second shear wall, a floor slab and the above-mentioned ring-buckle steel bar connection structure; the ring-buckle steel bar connection structure is located between the first shear wall, the second shear wall and the floor slab, and the first shear wall energy-absorbing steel bars, the second shear wall energy-absorbing steel bars and the floor slab energy-absorbing steel bars of the ring-buckle steel bar connection structure are respectively connected to the first shear wall, the second shear wall and the floor slab.
[0020] According to an embodiment of the third aspect of the present invention, there is provided a method for manufacturing the above-mentioned nuclear power plant building structure, comprising the following steps:
[0021] Anchor the longitudinal reinforcement of the ring buckle reinforcement connection structure;
[0022] The first shear wall energy-absorbing steel bar, the second shear wall energy-absorbing steel bar and the floor slab energy-absorbing steel bar in the ring-buckle steel bar connection structure are sequentially sleeved onto the longitudinal steel bars in a predetermined order;
[0023] Fixing the first shear wall energy-absorbing steel bars, the second shear wall energy-absorbing steel bars and the floor slab energy-absorbing steel bars to the longitudinal steel bars;
[0024] The first shear wall energy-absorbing steel bars, the second shear wall energy-absorbing steel bars and the floor slab energy-absorbing steel bars are cast in situ respectively to obtain a first shear wall, a second shear wall and a floor slab, wherein the first shear wall is connected to the first shear wall energy-absorbing steel bars, the second shear wall is connected to the second shear wall energy-absorbing steel bars, and the floor slab is connected to the floor slab energy-absorbing steel bars.
[0025] Preferably, the number of the first shear wall energy-absorbing steel bars, the second shear wall energy-absorbing steel bars and the floor slab energy-absorbing steel bars are all multiple, and the predetermined order is the first shear wall energy-absorbing steel bars, the floor slab energy-absorbing steel bars, the second shear wall energy-absorbing steel bars, the floor slab energy-absorbing steel bars, and the first shear wall energy-absorbing steel bars, which are arranged in a cycle in sequence.
[0026] The buckle steel bar connection structure in the present invention realizes the connection between the first shear wall, the second shear wall and the floor slab through the first shear wall energy-absorbing steel bar, the second shear wall energy-absorbing steel bar and the floor slab energy-absorbing steel bar. The first shear wall is the upper shear wall, and the second shear wall is the lower shear wall. In addition, the first shear wall energy-absorbing steel bar, the second shear wall energy-absorbing steel bar and the floor slab energy-absorbing steel bar are all anchored and connected to the longitudinal steel bars. The first shear wall energy-absorbing steel bar is provided with a first bending portion in the middle, and the second shear wall energy-absorbing steel bar is provided with a second bending portion in the middle. When the building structure is subjected to vibration, the first bending portion and the second bending portion produce elastic deformation to absorb and dissipate energy.
[0027] Specifically, under normal working conditions, the floor slab is mainly subjected to vertical loads generated by its own weight, upper floors and service loads. These loads will cause bending moments and shear forces in the floor slab. The shear wall mainly resists horizontal shear forces. When the building structure is subjected to vibration, the floor slab will also bear horizontal loads, generating horizontal shear forces and bending moments. This will cause deformation of the floor slab in the plane. Under the action of uniformly distributed loads, the edge of the floor slab is compressed, and the stress is concentrated near the support node (i.e., the connection structure), thereby increasing the horizontal shear force borne by the shear wall. When the present ring-buckle steel bar connection structure is subjected to horizontal shear force, the (first / second) bent portion of the (first / second) shear wall energy-absorbing steel bar produces elastic deformation, specifically, the bent portion on one side of the shear wall energy-absorbing steel bar produces compressive elastic deformation, and the first bent portion on the other side produces tensile elastic deformation, absorbing and dissipating energy through repeated deformation processes, thereby reducing the degree of damage to the wall.
[0028] In summary, the ring-buckle steel bar connection structure has good energy dissipation performance, can effectively absorb the energy generated by the vibration of the building, and is not prone to damage and failure, and can meet the needs of the nuclear power plant construction field. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] Figure 1 It is a structural schematic diagram of an existing ring buckle steel bar connection structure;
[0030] Figure 2 It is a side view of an existing ring buckle steel bar connection structure;
[0031] Figure 3 is a schematic structural diagram of a ring-buckle steel bar connection structure in some embodiments of the present invention;
[0032] Figure 4 is a front view of a ring-buckle steel bar connection structure in some embodiments of the present invention;
[0033] Figure 5 is a side view of a ring-buckle steel bar connection structure in some embodiments of the present invention;
[0034] Figure 6 It is a schematic diagram of the connection structure between the first shear wall energy-absorbing steel bar, the second shear wall energy-absorbing steel bar, the floor slab energy-absorbing steel bar and the longitudinal steel bar in some embodiments of the present invention;
[0035] Figure 7 is a schematic diagram of the structure of the second shear wall energy-absorbing steel bar in some embodiments of the present invention;
[0036] Figure 8 It is a schematic diagram of the structure of energy-absorbing steel bars of floor shear walls in some embodiments of the present invention.
[0037] In the figure: 1. first shear wall energy-absorbing steel bar; 11. first bending part; 12. first connecting rod section; 13. first energy-absorbing section; 2. second shear wall energy-absorbing steel bar; 21. second bending part; 22. second connecting rod section; 23. second energy-absorbing section; 3. floor slab energy-absorbing steel bar; 31. third bending part; 32. third connecting rod section; 33. third energy-absorbing section; 4a. longitudinal steel bar; 4b. longitudinal steel bar; 5a. first shear wall; 5b. first shear wall; 6a. second shear wall; 6b. second shear wall; 7. floor slab; 8. assembled ring buckle steel bar of upper shear wall; 9. assembled ring buckle steel bar of lower shear wall. DETAILED DESCRIPTION
[0038] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of the present invention.
[0039] In the description of the present invention, it should be noted that the terms "upper", "lower" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience and simplification of the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.
[0040] In the description of the present invention, the terms “first”, “second” and “third” are used for descriptive purposes only and should not be understood as indicating or implying relative importance.
[0041] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connect", "set", "install", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.
[0042] like Figure 1 and Figure 2 As shown, Figure 1 and Figure 2 , the existing ring-buckle steel bar connection structure is shown, which shows the longitudinal steel bar 4a, the first shear wall 5a, the second shear wall 6a, the upper shear wall assembled ring-buckle steel bar 8 and the lower shear wall assembled ring-buckle steel bar 9 in the prior art.
[0043] It can be seen that when pouring concrete at the connection node between the traditional shear wall and the floor slab, the unconnected stress-bearing steel bars cannot participate in the structural stress. In addition, the straight section of the existing assembled buckle steel bars has weak energy dissipation capacity, the steel bar anchoring effect is not ideal, the structural shear resistance is weak, the seismic performance is low, and the excellent energy dissipation performance of the material is not fully utilized.
[0044] like Figure 3 As shown, Figure 3 The buckle steel bar connection structure of the present invention is shown, wherein the longitudinal steel bar 4b, the first shear wall 5b, the second shear wall 6b, the floor slab 7, the first shear wall energy-absorbing steel bar 1, the second shear wall energy-absorbing steel bar 2 and the floor slab energy-absorbing steel bar 3 in this embodiment are specifically shown.
[0045] The bent combined energy-absorbing steel bar in the present invention aims to increase energy consumption when the bent section of the steel bar is under tension, so as to solve the problem of low energy consumption of the straight section when the existing assembled buckle steel bars are under tension. At the same time, the bent combined energy-absorbing steel bar realizes the connection of the steel bars by staggered arrangement of the shear wall energy-absorbing steel bars and the floor slab energy-absorbing steel bars, and pours concrete after the steel bars are fixed, which can effectively improve the construction progress, reduce construction costs, and facilitate the maintenance of the exterior wall structure. The bent combined energy-absorbing steel bar is feasible in construction, has reasonable force, and can meet the relevant steel bar structure and specification requirements of shear walls and floor slabs in structure.
[0046] Real-time Example 1
[0047] See also Figure 3 and Figure 5 The present invention discloses a ring-buckle steel bar connection structure, which is used for connecting a first shear wall 5b, a second shear wall 6b and a floor slab 7, and includes: a longitudinal steel bar 4b, a floor slab energy-absorbing steel bar 3, a first shear wall energy-absorbing steel bar 1 and a second shear wall energy-absorbing steel bar 2.
[0048] Among them, the second shear wall 6b is located below the first shear wall 5b, the floor 7 is located on one side of the first shear wall 5b and the second shear wall 6b, and the floor 7 is directly opposite to the interval between the first shear wall 5b and the second shear wall 6b. The longitudinal steel bar 4b extends along the first horizontal direction, and the longitudinal steel bar 4b is located between the first shear wall 5b, the second shear wall 6b and the floor 7. The floor energy-absorbing steel bar 3 extends along the second horizontal direction, and the second horizontal direction is perpendicular to the first horizontal direction. One end of the floor energy-absorbing steel bar 3 is connected to the longitudinal steel bar 4b, and the other end is connected to the floor 7. The first shear wall energy-absorbing steel bar 1 extends along the vertical direction. One end of the first shear wall energy-absorbing steel bar 1 is connected to the longitudinal steel bar 4b, and the other end is connected to the first shear wall 5b. The middle part of the first shear wall energy-absorbing steel bar 1 is provided with a first bending portion 11, and the second shear wall energy-absorbing steel bar 2 extends along the vertical direction. One end of the second shear wall energy-absorbing steel bar 2 is connected to the longitudinal steel bar 4b, and the other end is connected to the second shear wall 6b. A second bending portion 21 is provided in the middle of the second shear wall energy-absorbing steel bar 2. When subjected to vibration, the first bending portion 11 and the second bending portion 21 produce elastic deformation to absorb and dissipate energy.
[0049] It should be noted that if Figure 1 and Figure 2 As shown, Figure 1 and Figure 2 The schematic diagram of the existing ring buckle steel bar connection structure is shown. In the existing ring buckle steel bar connection structure, the first shear wall 5a is connected to the second shear wall 6a through staggered U-shaped steel bars. Specifically, the upper shear wall assembled ring buckle steel bar 8 and the lower shear wall assembled ring buckle steel bar 9 are connected to the longitudinal steel bar 4a, and the horizontal floor slab 7 is directly connected to the longitudinal steel bar 4a. It can be seen that during the vibration of the building structure, the horizontal shear force generated by the floor slab 7 is directly and rigidly transmitted to the shear wall through the ring buckle steel bar connection structure, which can easily cause the connection node to fail.
[0050] The buckle steel bar connection structure in this embodiment realizes the connection between the first shear wall 5b, the second shear wall 6b and the floor 7 through the first shear wall energy-absorbing steel bar 1, the second shear wall energy-absorbing steel bar 2 and the floor slab energy-absorbing steel bar 3. The first shear wall 5b is the upper shear wall, and the second shear wall 6b is the lower shear wall. In addition, the first shear wall energy-absorbing steel bar 1, the second shear wall energy-absorbing steel bar 2 and the floor slab energy-absorbing steel bar 3 are all anchored and connected to the longitudinal steel bar 4b. The first shear wall energy-absorbing steel bar 1 is provided with a first bending portion 11 in the middle, and the second shear wall energy-absorbing steel bar 2 is provided with a second bending portion 21 in the middle. When the building structure is subjected to vibration, the first bending portion 11 and the second bending portion 21 produce elastic deformation to absorb and dissipate energy.
[0051] Specifically, under normal working conditions, the floor slab 7 is mainly subjected to vertical loads generated by its own weight, upper floors and use loads. These loads will cause bending moments and shear forces to be generated in the floor slab 7. The shear wall mainly resists horizontal shear forces. When the building structure is subjected to vibration, the floor slab 7 will also be subjected to horizontal loads, generating horizontal shear forces and bending moments. This will cause deformation of the floor slab 7 in the plane. Under the action of uniformly distributed loads, the edge portion of the floor slab 7 is compressed, and the stress is concentrated near the support node (i.e., the connection structure), thereby increasing the horizontal shear force borne by the shear wall. When the present ring-buckle steel bar connection structure is subjected to horizontal shear force, the (first / second) bent portion of the (first / second) shear wall energy-absorbing steel bar produces elastic deformation, specifically, the bent portion on one side of the shear wall energy-absorbing steel bar produces compressive elastic deformation, and the first bent portion 11 on the other side produces tensile elastic deformation, absorbing and dissipating energy through repeated deformation processes, thereby reducing the degree of damage to the wall.
[0052] In summary, the ring-buckle steel bar connection structure has good energy dissipation performance, can effectively absorb the energy generated by the vibration of the building, and is not prone to damage and failure, and can meet the needs of the nuclear power plant construction field.
[0053] See also Figure 3 In some embodiments, the number of the first shear wall energy-absorbing steel bars 1, the second shear wall energy-absorbing steel bars 2 and the floor slab energy-absorbing steel bars 3 are all multiple, and the multiple floor slab energy-absorbing steel bars 3, the multiple first shear wall energy-absorbing steel bars 1 and the multiple second shear wall energy-absorbing steel bars 2 are alternately arranged along the extension direction of the longitudinal steel bars 4b and connected to the longitudinal steel bars 4b.
[0054] In this embodiment, by alternately arranging multiple floor slab energy-absorbing steel bars 3, multiple first shear wall energy-absorbing steel bars 1 and multiple second shear wall energy-absorbing steel bars 2 along the extension direction of the longitudinal steel bars 4b, uniform load transfer can be achieved to avoid excessive stress concentration at a certain node.
[0055] Further, the longitudinal reinforcement 4b includes a first inserted reinforcement and a second inserted reinforcement, the first inserted reinforcement is located above the second inserted reinforcement, the first inserted reinforcement is connected to the second shear wall energy-absorbing reinforcement 2, and the second inserted reinforcement is connected to the first shear wall energy-absorbing reinforcement 1. The first bent portion 11 and the second bent portion 21 are at the same level and are both located between the first inserted reinforcement and the second inserted reinforcement.
[0056] By arranging the first inserted reinforcement and the second inserted reinforcement distributed up and down, and connecting the first inserted reinforcement (upper part) with the second shear wall energy-absorbing reinforcement 2 and the second inserted reinforcement (lower part) with the first shear wall energy-absorbing reinforcement 1, the shear force and bending moment of the overall structure can be effectively weakened through the first bending portion and the second bending portion.
[0057] In this embodiment, when the shear wall is subjected to horizontal load, the bent first shear wall energy-absorbing steel bar 1 and the second shear wall 6b absorb and dissipate energy through repeated deformation processes, thereby reducing the degree of damage to the wall. Moreover, the bent shape of the steel bar can effectively control the width and distribution of cracks, avoid local damage caused by stress concentration, and maintain the integrity of the shear wall. In addition, the shear wall has better ductility and deformation capacity under stress through the specific bent energy-absorbing steel bar, and can still maintain the integrity and safety of the structure under extreme load conditions.
[0058] See also Figure 3 , Figure 4 and Figure 5 In some embodiments, the first shear wall energy absorbing steel bar 1 further includes a first energy absorbing section 13 and a first connecting rod section 12. The first connecting rod section 12 extends downward in the vertical direction. The first energy absorbing section 13 is located below the first connecting rod section 12 and the longitudinal steel bar 4b. The first bending portion 11 is located between the first connecting rod section 12 and the first energy absorbing section 13. One end of the first connecting rod section 12 is connected to the first shear wall 5b, and the other end is elastically connected to the first energy absorbing section 13 through the first bending portion 11. The first energy absorbing end is connected to the second inserted rib of the longitudinal steel bar 4b.
[0059] like Figure 5 As shown, the first shear wall 5b is an upper shear wall, and the central axis of the first shear wall energy-absorbing steel bar 1 extends in the vertical direction. In this embodiment, by providing the first bent portion 11 between the first connecting rod segment 12 and the first energy-absorbing segment 13, when the first shear wall 5b is subjected to horizontal loads (shear force and bending moment, etc.), the bent energy-absorbing steel bar absorbs and dissipates energy through the elastic deformation process, thereby reducing the degree of damage to the wall.
[0060] Furthermore, if Figure 5 As shown, there are two first connecting rod segments 12, and the two first connecting rod segments 12 are spaced apart along the second horizontal direction. There are two first bending portions 11, and the two first bending portions 11 are relatively bent inward, and specifically, the spacing between the two first bending portions 11 gradually narrows from both ends to the middle. The first energy consuming segment 13 extends along the second horizontal direction, and the first energy consuming segment 13 is located between the two first bending portions 11, and the two ends of the first energy consuming segment 13 are respectively connected to the two first connecting rod segments 12 through the two first bending portions 11.
[0061] The first energy dissipation section 13, the two first connecting rod sections 12 and the two first bending portions 11 enclose a first insertion cavity, and the longitudinal steel bar 4b runs through the first insertion cavity. In other words, the first energy dissipation section 13 is located below the longitudinal steel bar 4b and is connected to the bottom of the second insertion bar of the longitudinal steel bar 4b.
[0062] In this embodiment, when the upper shear wall is subjected to horizontal shear force, the first bent portion 11 on one side of the first shear wall energy-absorbing steel bar 1 produces compressive elastic deformation, and the first bent portion 11 on the other side produces tensile elastic deformation, and transmits the tension to the longitudinal steel bar 4b, thereby avoiding structural damage, absorbing and dissipating energy through repeated deformation processes, and reducing the degree of damage to the wall.
[0063] Specifically, when the upper shear wall is subjected to a rightward force, the first bent portion 11 on the right side of the first shear wall energy-absorbing steel bar 1 generates a compressive elastic deformation, and the first bent portion 11 on the left side generates a tensile elastic deformation.
[0064] Exemplarily, the first bending portion 11 is U-shaped, V-shaped or arc-shaped.
[0065] See also Figure 3 and Figure 5 In some embodiments, the second shear wall energy absorbing steel bar 2 further includes a second energy absorbing section 23 and a second connecting rod section 22. The second connecting rod section 22 extends upward in the vertical direction. The second energy absorbing section 23 is located above the second connecting rod section 22 and the longitudinal steel bar 4b. The second bending portion 21 is located between the second connecting rod section 22 and the second energy absorbing section 23. One end of the second connecting rod section 22 is connected to the second shear wall 6b, and the other end is elastically connected to the second energy absorbing section 23 through the second bending portion 21. The second energy absorbing section 23 is connected to the first inserted rib of the longitudinal steel bar 4b.
[0066] like Figure 5 As shown, the second shear wall 6b is a lower shear wall, and the central axis of the second shear wall energy-absorbing steel bar 2 extends in the vertical direction. In this embodiment, the horizontal load on the first shear wall 5b can be transferred to the second shear wall energy-absorbing steel bar 2 through the first shear wall energy-absorbing steel bar 1 and the longitudinal steel bar 4b, and the horizontal load on the floor 7 can also be transferred to the second shear wall energy-absorbing steel bar 2 through the floor slab energy-absorbing steel bar 3 and the longitudinal steel bar 4b. Further, the second bending portion 21 between the second connecting rod segment 22 and the second energy-absorbing segment 23 is repeatedly deformed to absorb and dissipate energy, thereby further reducing the degree of damage to the wall.
[0067] Furthermore, if Figure 7 As shown, the shape of the second shear wall energy-absorbing steel bar 2 is the same as the shape of the first shear wall energy-absorbing steel bar 1 .
[0068] There are two second connecting rod sections 22, which are spaced apart along the second horizontal direction, and there are two second bending portions 21, which are relatively bent inwards, and specifically, the spacing between the two second bending portions 21 gradually narrows from both ends to the middle. The second energy absorbing section 23 extends along the second horizontal direction, and the second energy absorbing section 23 is located between the two second bending portions 21, and both ends of the second energy absorbing section 23 are connected to the two second connecting rod sections 22 through the two second bending portions 21, respectively.
[0069] The second energy-absorbing section 23, the two second connecting rod sections 22 and the two second bending portions 21 enclose a second insertion cavity, which is partially aligned with the first insertion cavity, and the longitudinal steel bar 4b passes through the first insertion cavity and the second insertion cavity in sequence.
[0070] In this embodiment, when the upper shear wall and the floor slab 7 are subjected to horizontal shear force, the horizontal shear force is transmitted to the second shear wall energy-absorbing steel bar 2 through the longitudinal steel bar 4b, and the second bent portion 21 on one side of the second shear wall energy-absorbing steel bar 2 produces compressive elastic deformation, and the second bent portion 21 on the other side produces tensile elastic deformation, thereby avoiding structural damage, absorbing and dissipating energy through repeated deformation processes, and reducing the degree of damage to the wall.
[0071] For example, when the second shear wall energy-absorbing steel bar 2 is subjected to the rightward force transmitted by the longitudinal steel bar 4b, the second bending portion 21 on the right side of the second shear wall energy-absorbing steel bar 2 produces compressive elastic deformation, and the second bending portion 21 on the left side produces tensile elastic deformation.
[0072] Exemplarily, the second bending portion 21 is U-shaped, V-shaped or arc-shaped.
[0073] See also Figure 3 and Figure 5 The floor slab energy absorbing steel bar 3 includes a third energy absorbing section 33, a third bending portion 31 and a third connecting rod section 32. The third connecting rod section 32 extends along the second horizontal direction. The third energy absorbing section 33 is arranged opposite to the floor slab 7 and is located outside the longitudinal steel bar. The third bending portion 31 is located between the third connecting rod section 32 and the third energy absorbing section 33. One end of the third connecting rod section 32 is connected to the floor slab 7, and the other end is connected to the third energy absorbing section 33 through the third bending portion 31. The third energy absorbing section 33 is connected to the first inserted rib and the second inserted rib located on the target side.
[0074] In this embodiment, the floor slab energy-absorbing steel bar 3 is connected to the longitudinal steel bar 4b through the third energy-absorbing section 33. When the floor slab 7 is subjected to horizontal shear force, first, a part of the energy of the horizontal load is consumed through the elastic deformation of the third bending section. In addition, the floor slab energy-absorbing steel bar 3 can also transfer the horizontal load to the first shear wall energy-absorbing steel bar 1 and the second shear wall energy-absorbing steel bar 2 through the longitudinal steel bar 4b, and absorb and dissipate energy through the repeated deformation of the first shear wall energy-absorbing steel bar 1 and the second shear wall energy-absorbing steel bar 2.
[0075] Furthermore, if Figure 8 As shown, there are two third connecting rod sections 32, and the two connecting rod sections are arranged at intervals in the vertical direction. There are two third bending portions 31, and the two third bending portions 31 are arranged opposite to each other in the vertical direction and bent outward. The end of the third bending portion 31 connected to the third energy absorbing section 33 is the first end, and the end of the third bending portion 31 connected to the third connecting rod is the second end. The width of the interval between the two third bending portions 31 gradually increases from the first end to the second end. The third energy absorbing section 33 extends in the vertical direction, and the third energy absorbing section 33 is located between the two third bending portions 31. The two ends of the third energy absorbing section 33 are respectively connected to the two third connecting rod sections 32 through the two third bending portions 31.
[0076] The third energy-absorbing section 33, the two third connecting rod sections 32 and the two third bending portions 31 enclose a third insertion cavity, which is partially aligned with the first insertion cavity and the second insertion cavity, and the longitudinal reinforcement 4b passes through the first insertion cavity, the second insertion cavity and the third insertion cavity in sequence. Among them, the longitudinal reinforcement 4b partially passes through the third insertion cavity, that is, the first insertion rib and the second insertion rib on the target side pass through the third insertion cavity.
[0077] In this embodiment, the floor slab energy-absorbing steel bar 3 provides a large deformation capacity through the bending shape, and can absorb energy through repeated bending and flattening processes under earthquake or other dynamic loads, thereby playing an energy-absorbing role. Moreover, the bending shape of the steel bar can effectively disperse the concentrated stress, reduce the stress concentration area, and prevent local damage. The bent steel bar makes the floor slab 7 have better ductility and toughness, and can maintain a good bearing capacity under large deformation, thereby improving overall safety.
[0078] like Figure 5As shown, the width of the spacing between the two third bending portions 31 gradually increases from the first end to the second end. A pair of insertion bars (i.e., the first preset connection bar and the second preset connection bar) on the left side of the longitudinal reinforcement 4b are inserted into the third insertion cavity and are located on the left side of the third insertion cavity (i.e., the side with a wider width of the third insertion cavity), and the first preset connection bar and the second preset connection bar are connected to the third energy dissipation section 33. When the floor slab 7 is subjected to a horizontal load, a portion of the horizontal load is transferred to the shear wall energy dissipation steel bars through the first preset connection bar and the second preset connection bar, and the energy absorption and dissipation can be further achieved through the shear wall energy dissipation steel bars.
[0079] It can be seen that the energy-absorbing steel bars in the floor slab 7 play the following main roles: (1) Absorbing and dissipating energy: The energy-absorbing steel bars are designed to be bent so that they can absorb and dissipate energy through repeated bending and unfolding processes under dynamic loads such as earthquakes. This energy dissipation mechanism can significantly reduce the energy transferred to the floor slab 7 and the overall structure, and reduce the destructive force of external loads such as earthquakes on the structure. (2) Enhanced ductility: The bent energy-absorbing steel bars improve the ductility of the floor slab 7, so that it can still maintain its bearing capacity under large deformation conditions. This ductility enhances the seismic performance of the structure and prevents brittle failure under extreme load conditions. (3) Dispersing stress: The shape of the bent steel bars can effectively disperse concentrated stress, reduce stress concentration areas, and avoid local damage and crack expansion caused by stress concentration. By dispersing stress, the energy-absorbing steel bars help maintain the integrity and structural integrity of the floor slab 7. (4) Increasing structural toughness: The energy-absorbing steel bars enhance the overall toughness of the floor slab 7 through their shape design, so that it can better resist deformation and damage when subjected to impact loads or repeated loads. This toughness is crucial to the structural safety under extreme events such as earthquakes. (5) Improve the connection between the floor slab 7 and the shear wall: The floor slab energy-absorbing steel bars 3 form a complex force-bearing system through the connection with the shear wall. The bending shape of the energy-absorbing steel bars helps to form a more solid and reliable connection between the floor slab 7 and the shear wall, and enhances the force-bearing performance at the node.
[0080] In summary, the stress characteristics of floor slab 7 are as follows:
[0081] (1) Vertical load: The floor slab 7 is mainly subjected to vertical loads generated by its own weight, upper floors and use loads. These loads will cause bending moment and shear force in the floor slab 7. (2) Horizontal load: Under the action of earthquake or wind load, the floor slab 7 will bear horizontal loads, generating horizontal shear force and bending moment. This will cause deformation of the floor slab 7 in the plane. (3) Stress distribution: Under the action of uniformly distributed load, the edge of the floor slab 7 is compressed, and the stress is concentrated near the support node. (4) Node force: In the new wall panel connection node bending and buckling combined energy-absorbing steel bar connection component, the floor slab 7 is connected to the shear wall through energy-absorbing steel bars. The force characteristics at the node are complex, so it is necessary to consider the combined effects of shear force, bending moment and torque.
[0082] The relationship between the bending shape of the floor slab energy-absorbing steel bar 3 and the stress characteristics is as follows:
[0083] (1) Energy dissipation capacity: The floor slab energy dissipation steel bar 3 provides a large deformation capacity through the bending shape. It can absorb energy through repeated bending and flattening under earthquake or other dynamic loads, thus playing an energy dissipation role. (2) Stress dispersion: The bending shape of the steel bar can effectively disperse the concentrated stress, reduce the stress concentration area, and prevent local damage. (3) Enhanced ductility: The bent steel bar makes the floor slab 7 have better ductility and toughness, and can maintain a good bearing capacity under large deformation, thereby improving overall safety.
[0084] The stress characteristics of shear walls are as follows:
[0085] (1) Shear resistance: Shear walls mainly resist horizontal shear forces caused by earthquakes, wind loads, etc. through their thickness and height. (2) Bending resistance: Shear walls resist bending moments through their cross-sectional dimensions and vertical reinforcements arranged in the wall. (3) Node forces: Shear walls are connected to the floor slab 7 through shear wall energy-absorbing reinforcements. The forces at the nodes are complex and the combined effects of bending moments, shear forces, and torques need to be considered. (4) Stress concentration: Stress concentration occurs at openings, corners, and support points, and special attention needs to be paid to strengthening the treatment.
[0086] The relationship between the bending shape of the shear wall energy-absorbing steel bars and the stress characteristics is as follows:
[0087] (1) Energy dissipation mechanism: When the shear wall is subjected to horizontal load, the bent energy-absorbing steel bars absorb and dissipate energy through repeated deformation, thus reducing the degree of damage to the wall. (2) Crack control: The bent shape of the steel bars can effectively control the width and distribution of cracks, avoid local damage caused by stress concentration, and maintain the integrity of the shear wall. (3) Enhanced ductility: The energy-absorbing steel bars with specific bends can make the shear wall have better ductility and deformation capacity under stress, and can maintain the integrity and safety of the structure under extreme load conditions.
[0088] Specifically, the present embodiment relates to a new type of wall panel connection node bend combined energy-absorbing steel bar connection component. Currently, when pouring concrete at the connection node between the traditional shear wall and the floor slab 7, the unconnected stress-bearing steel bars cannot participate in the structural stress. In addition, the straight section of the existing assembled ring buckle steel bars has weak energy absorption capacity, the steel bar anchoring effect is not ideal, the structural shear resistance is weak, the seismic performance is low, and the excellent energy absorption performance of the material is not fully utilized. Compared with the existing assembled ring buckle steel bars, the bend combined energy-absorbing steel bars have higher seismic performance, better energy absorption performance and superior economic performance.
[0089] The purpose of this bent and folded energy-absorbing steel bar is to increase energy consumption when the bent section of the steel bar is under tension, so as to solve the problem of low energy consumption of the straight section of the existing assembled buckle steel bar when under tension. At the same time, this bent and folded energy-absorbing steel bar realizes the connection of the steel bars by staggered arrangement of the shear wall energy-absorbing steel bars and the floor slab energy-absorbing steel bars 3, and inserts the longitudinal steel bars 4b inside, and pours concrete after the steel bars are fixed, which can effectively improve the construction progress, reduce construction costs, and facilitate the maintenance of the exterior wall structure. This bent and folded energy-absorbing steel bar is feasible in construction, has reasonable force, and can meet the relevant steel bar structure and specification requirements of the shear wall and the floor slab 7 in structure.
[0090] The main innovative features and beneficial effects of the present invention are:
[0091] 1. The shear wall energy-absorbing steel bars and the floor slab energy-absorbing steel bars 3 are bent for many times and extend out of the shear wall surface. The shear wall energy-absorbing steel bars and the floor slab energy-absorbing steel bars 3 between the floor slab 7 and the shear wall node are pinned and connected by the longitudinal steel bars 4b to enhance the anchoring effect of the steel bars at the shear wall node.
[0092] 2. The energy-absorbing steel bars of the shear wall are bent inward at the straight section along the wall surface of the shear wall. The bending positions are symmetrical to each other and form an inward convex shape to increase the energy consumption of the shear wall energy-absorbing steel bars when subjected to tension and improve the seismic performance of the shear wall.
[0093] 3. The shear wall energy-absorbing steel bars of the closed ring of the wall panel are arranged at intervals with the floor slab energy-absorbing steel bars 3, and directly participate in the structural force with the longitudinal steel bars 4b. They have superior energy-absorbing performance and excellent structural integrity, and the construction is simple and convenient, forming a structural system equivalent to cast-in-place.
[0094] Example 2
[0095] The present invention further discloses a nuclear power plant building structure, comprising: a first shear wall 5b, a second shear wall 6b, a floor slab 7 and the ring-buckle steel bar connection structure in the first embodiment.
[0096] Among them, the ring-buckle steel bar connection structure is located between the first shear wall 5b, the second shear wall 6b and the floor slab 7, and the first shear wall energy-absorbing steel bar 1, the second shear wall energy-absorbing steel bar 2 and the floor slab energy-absorbing steel bar 3 of the ring-buckle steel bar connection structure are respectively connected to the first shear wall 5b, the second shear wall 6b and the floor slab 7.
[0097] The ring-buckle steel bar connection structure in Example 1 is suitable for use in connection nodes of any building structure, and is particularly suitable for use in connection nodes of nuclear power plant building structures.
[0098] Specifically, in this embodiment, the energy-absorbing steel bar connection component (i.e., the above-mentioned buckled steel bar connection structure) can be applied to the reactor building of a nuclear power plant. The reactor building of a nuclear power plant is a key facility that requires extremely high structural safety and seismic performance to ensure that the integrity and safety of the reactor can be protected when extreme events such as earthquakes occur.
[0099] The architectural structural characteristics of nuclear power plant buildings: (1) High seismic requirements: The areas where nuclear power plants are located are often faced with a high risk of earthquakes. Therefore, the design of the reactor building must have super strong seismic resistance and be able to withstand extreme earthquake loads without damage. (2) Heavy structure: Nuclear power plant buildings are usually heavy structures, using high-strength concrete and steel components to ensure that they can bear the weight of the reactor and related equipment while resisting external impacts. (3) Redundant design: Redundant design is often used in structural design to increase the stability and reliability of the structure. Through multi-level protection measures, it is ensured that the entire structure can remain stable even if some components fail. (4) Complex nodes: There are a large number of complex nodes in nuclear power plant buildings. These nodes need to be specially designed to withstand multi-directional loads and ensure the firm connection and coordinated force between the various components. (5) High-toughness materials: High-toughness materials, such as high-strength steel bars and special concrete, are used to improve the ductility and energy dissipation capacity of the structure and enhance the deformation capacity of the structure under extreme loads.
[0100] The specific application of the energy-absorbing steel bar (i.e. the above-mentioned ring buckle steel bar connection structure) in the nuclear power plant building: In the reactor building of a nuclear power plant, the energy-absorbing steel bar can be applied to the following key parts:
[0101] (1) Connection nodes between floor slab 7 and shear wall: Complex nodes are formed at the connection between floor slab 7 and shear wall by using bent energy-absorbing steel bars. These nodes can absorb and dissipate energy through repeated deformation of energy-absorbing steel bars under earthquake action, reduce the energy transmitted to the main structure, and thus improve the seismic performance of the overall structure. (2) Seismic isolation layer: A seismic isolation layer is set at the bottom of the reactor building. Energy-absorbing steel bars serve as the core energy-absorbing components in the seismic isolation layer. Through their bent shape, they provide excellent energy absorption capacity and reduce the energy transmitted by seismic waves to the upper structure. (3) Support components: Energy-absorbing steel bars are embedded in key support components to improve the ductility and toughness of support components, ensuring that these support components can remain stable and intact under extreme loads such as earthquakes.
[0102] By applying the above-mentioned ring-buckle steel bar connection structure to the above-mentioned key parts, the energy consumption performance of the nuclear power plant building structure can be effectively improved, the energy generated by the vibration of the building can be effectively absorbed, and then the damage and failure of the building can be avoided, which can meet the needs of the nuclear power plant construction field.
[0103] Example 3
[0104] The present invention also discloses a method for manufacturing a nuclear power plant building structure, which is used to manufacture the nuclear power plant building structure in Example 2. The method comprises the following steps:
[0105] Anchor the longitudinal reinforcement 4b of the ring-buckle reinforcement connection structure.
[0106] The first shear wall energy-absorbing steel bar 1, the second shear wall energy-absorbing steel bar 2 and the floor slab energy-absorbing steel bar 3 in the ring-buckle steel bar connection structure are sequentially sleeved onto the longitudinal steel bar 4b in a predetermined order.
[0107] The first shear wall energy-absorbing steel bars 1, the second shear wall energy-absorbing steel bars 2 and the floor slab energy-absorbing steel bars 3 are fixed to the longitudinal steel bars 4b.
[0108] The first shear wall energy-absorbing steel bar 1, the second shear wall energy-absorbing steel bar 2 and the floor slab energy-absorbing steel bar 3 are cast in situ respectively to obtain the first shear wall 5b, the second shear wall 6b and the floor slab 7, wherein the first shear wall 5b is connected to the first shear wall energy-absorbing steel bar 1, the second shear wall 6b is connected to the second shear wall energy-absorbing steel bar 2, and the floor slab 7 is connected to the floor slab energy-absorbing steel bar 3.
[0109] Specifically, the number of the first shear wall energy-absorbing steel bars 1, the second shear wall energy-absorbing steel bars 2 and the floor slab energy-absorbing steel bars 3 are all multiple, and the predetermined order is the first shear wall energy-absorbing steel bars 1, the floor slab energy-absorbing steel bars 3, the second shear wall energy-absorbing steel bars 2, the floor slab energy-absorbing steel bars 3, the first shear wall energy-absorbing steel bars 1, ..., arranged in a cycle in sequence until the first shear wall energy-absorbing steel bars 1, the second shear wall energy-absorbing steel bars 2 and the floor slab energy-absorbing steel bars 3 are all mounted on the longitudinal steel bars 4b.
[0110] Further, S1, anchoring of the longitudinal reinforcement 4b, i.e. the above step of anchoring the longitudinal reinforcement 4b of the buckle reinforcement connection structure, specifically includes:
[0111] Positioning and installation: Fix and anchor the four longitudinal reinforcements 4b according to the designed position. Ensure the stability of the longitudinal reinforcement 4b in the vertical direction, and use formwork or temporary support to fix it when necessary.
[0112] Anchoring method: The lower end of the longitudinal reinforcement 4b is anchored in the lower structure, and the upper end extends to the position of the upper structure. The anchoring can be achieved by welding, tying or using anchors to ensure the firm connection of the longitudinal reinforcement 4b.
[0113] S2, alternately set the energy-absorbing steel bars, that is, the above steps, in accordance with a predetermined order, sequentially set the first shear wall energy-absorbing steel bar 1, the second shear wall energy-absorbing steel bar 2 and the floor slab energy-absorbing steel bar 3 in the ring buckle steel bar connection structure onto the longitudinal steel bar 4b, specifically including:
[0114] Sequential installation: According to the design sequence, the upper shear wall energy-absorbing steel bars, the lower shear wall energy-absorbing steel bars and the floor slab energy-absorbing steel bars 3 are alternately installed on the longitudinal steel bars 4b. The specific installation sequence is the first shear wall energy-absorbing steel bar 1, the floor slab energy-absorbing steel bar 3, the second shear wall energy-absorbing steel bar 2, the floor slab energy-absorbing steel bar 3, the first shear wall energy-absorbing steel bar 1, and so on.
[0115] The benefits of the cyclic sequence are as follows: (1) Uniform stress distribution: This alternating sequence helps to evenly distribute stress and reduce stress concentration. (2) Enhance structural integrity: The alternating connection of the upper and lower layers and the floor slab energy-absorbing steel bars 3 enhances the integrity and stability of the structure. (3) Improve energy dissipation effect: The bent and folded energy-absorbing steel bars can fully exert their energy dissipation effect in this sequence, thereby improving the seismic performance of the structure.
[0116] Regarding other cycle orders, other cycle orders can be considered, such as the first shear wall energy-absorbing steel bar 1-the floor slab energy-absorbing steel bar 3-the second shear wall energy-absorbing steel bar 2-the first shear wall energy-absorbing steel bar 1-the floor slab energy-absorbing steel bar 3-the second shear wall energy-absorbing steel bar 2-and so on. The specific order needs to be optimized according to the structural design and stress analysis.
[0117] S3, ensuring the anchorage of the energy-absorbing steel bars, that is, the above steps of fixing the first shear wall energy-absorbing steel bars 1, the second shear wall energy-absorbing steel bars 2 and the floor slab energy-absorbing steel bars 3 to the longitudinal steel bars 4b, specifically including:
[0118] Binding and fixing: After the energy-absorbing steel bars are installed, the upper shear wall energy-absorbing steel bars 1, the lower shear wall energy-absorbing steel bars 2 and the floor slab energy-absorbing steel bars 3 need to be tied and fixed with the longitudinal steel bars 4b. The tying method can be steel wire, tying device or other special tools.
[0119] Limit horizontal displacement: By binding and fixing, the horizontal displacement of the energy-absorbing steel bars can be limited to ensure that they can maintain the designed position and shape when subjected to stress, thereby achieving the expected energy-absorbing effect.
[0120] S4, cast-in-place construction of shear walls and floor slabs 7, i.e., the above steps, respectively cast the first shear wall energy-absorbing steel bars 1, the second shear wall energy-absorbing steel bars 2 and the floor slab energy-absorbing steel bars 3 in-place to obtain the first shear wall 5b, the second shear wall 6b and the floor slab 7, specifically including:
[0121] Cast-in-place sequence: After the energy-absorbing steel bars and longitudinal steel bars 4b are tied, the shear walls and floor slabs 7 are cast-in-place.
[0122] Casting method: Cast the concrete of shear wall and floor slab 7 according to the design requirements and construction specifications. Ensure that the concrete is poured evenly to avoid quality problems such as honeycombs and holes.
[0123] Connection ensuring: Through cast-in-place construction, the shear wall energy-absorbing steel bars are effectively connected to the shear wall, and the floor slab energy-absorbing steel bars 3 are effectively connected to the floor slab 7 to form an integral structure.
[0124] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.
Claims
1. A buckle steel bar connection structure, used for connecting a first shear wall, a second shear wall and a floor slab, characterized in that: include: Longitudinal steel bars (4b), floor slab energy-absorbing steel bars (3), first shear wall energy-absorbing steel bars (1) and second shear wall energy-absorbing steel bars (2); The second shear wall is located below the first shear wall, the floor slab is located on one side of the first shear wall and the second shear wall, and the floor slab is directly opposite to the interval between the first shear wall and the second shear wall. The longitudinal steel bar (4b) extends along a first horizontal direction, and the longitudinal steel bar (4b) is located between the first shear wall, the second shear wall and the floor slab; The floor slab energy-absorbing steel bar (3) extends along a second horizontal direction, the second horizontal direction is perpendicular to the first horizontal direction, one end of the floor slab energy-absorbing steel bar (3) is connected to the longitudinal steel bar (4b), and the other end is connected to the floor slab. The first shear wall energy-absorbing steel bar (1) extends in a vertical direction, one end of the first shear wall energy-absorbing steel bar (1) is connected to the longitudinal steel bar (4b), and the other end is connected to the first shear wall, and a first bending portion (11) is provided in the middle of the first shear wall energy-absorbing steel bar (1). The second shear wall energy-absorbing steel bar (2) extends in a vertical direction, one end of the second shear wall energy-absorbing steel bar (2) is connected to the longitudinal steel bar (4b), and the other end is connected to the second shear wall, a second bent portion (21) is provided in the middle of the second shear wall energy-absorbing steel bar (2), and when subjected to vibration, the first bent portion (11) and the second bent portion (21) generate elastic deformation to absorb and dissipate energy.
2. The ring-buckle steel bar connection structure according to claim 1, characterized in that: The first shear wall energy-absorbing steel bars (1), the second shear wall energy-absorbing steel bars (2) and the floor slab energy-absorbing steel bars (3) are all in multiple numbers; the multiple floor slab energy-absorbing steel bars (3), the multiple first shear wall energy-absorbing steel bars (1) and the multiple second shear wall energy-absorbing steel bars (2) are alternately arranged along the extension direction of the longitudinal steel bars (4b) and are connected to the longitudinal steel bars (4b).
3. The ring-buckle steel bar connection structure according to claim 2, characterized in that: The longitudinal reinforcement (4b) comprises a first inserted reinforcement and a second inserted reinforcement, wherein the first inserted reinforcement is located above the second inserted reinforcement, the first inserted reinforcement is connected to the second shear wall energy-absorbing reinforcement (2), and the second inserted reinforcement is connected to the first shear wall energy-absorbing reinforcement (1).
4. The ring-buckle steel bar connection structure according to claim 3, characterized in that: The first shear wall energy-absorbing steel bar (1) further comprises a first energy-absorbing section (13) and a first connecting rod section (12); the first connecting rod section (12) extends downward in a vertical direction; the first energy-absorbing section (13) is located below the first connecting rod section (12) and the longitudinal steel bar (4b); the first bending portion (11) is located between the first connecting rod section (12) and the first energy-absorbing section (13); one end of the first connecting rod section (12) is connected to the first shear wall, and the other end is elastically connected to the first energy-absorbing section (13) via the first bending portion (11); the first energy-absorbing end is connected to the second inserted bar.
5. The ring-buckle steel bar connection structure according to claim 4, characterized in that: The number of the first connecting rod segments (12) is two, and the two first connecting rod segments (12) are arranged at intervals along the second horizontal direction; the number of the first bending portions (11) is two, and the two first bending portions (11) are bent inwards relative to each other; The first energy absorbing section (13) is located between the two first bending portions (11), and two ends of the first energy absorbing section (13) are respectively connected to the two first connecting rod sections (12) through the two first bending portions (11).
6. The ring-buckle steel bar connection structure according to claim 4, characterized in that: The first energy-absorbing section (13), the two first connecting rod sections (12) and the two first bent portions (11) enclose a first insertion cavity, and the longitudinal steel bar (4b) passes through the first insertion cavity.
7. The ring-buckle steel bar connection structure according to claim 3, characterized in that: The second shear wall energy-absorbing steel bar (2) further comprises a second energy-absorbing section (23) and a second connecting rod section (22); the second connecting rod section (22) extends upward in a vertical direction; the second energy-absorbing section (23) is located above the second connecting rod section (22) and the longitudinal steel bar (4b); the second bending portion (21) is located between the second connecting rod section (22) and the second energy-absorbing section (23); one end of the second connecting rod section (22) is connected to the second shear wall, and the other end is elastically connected to the second energy-absorbing section (23) via the second bending portion (21); and the second energy-absorbing section (23) is connected to the first inserted steel bar.
8. The ring-buckle steel bar connection structure according to claim 7, characterized in that: The number of the second connecting rod segments (22) is two, and the two second connecting rod segments (22) are arranged at intervals along the second horizontal direction; the number of the second bending portions (21) is two, and the two second bending portions (21) are bent inwards relative to each other; The second energy absorbing section (23) is located between the two second bending portions (21), and the two ends of the second energy absorbing section (23) are respectively connected to the two second connecting rod sections (22) via the two second bending portions (21).
9. The ring-buckle steel bar connection structure according to claim 7, characterized in that: The second energy-absorbing section (23), the two second connecting rod sections (22) and the two second bent portions (21) enclose a second insertion cavity, the second insertion cavity is aligned with the first insertion cavity portion of the first shear wall energy-absorbing steel bar (1), and the longitudinal steel bar (4b) passes through the first insertion cavity and the second insertion cavity in sequence.
10. The ring-buckle steel bar connection structure according to claim 3, characterized in that: The number of the first insertion ribs is two or more, and the two or more first insertion ribs are arranged along the second horizontal direction. The number of the second insertion ribs is two or more, the two or more second insertion ribs are arranged along the second horizontal direction, the number of the second insertion ribs is the same as the number of the first insertion ribs, and the plurality of second insertion ribs correspond one to one to the plurality of first insertion ribs. The side away from the floor slab is set as the target side, and the first inserted reinforcement and the second inserted reinforcement located on the target side are both connected to the floor slab energy-absorbing reinforcement (3).
11. The ring-buckle steel bar connection structure according to claim 10, characterized in that: The floor slab energy-absorbing steel bar (3) comprises a third energy-absorbing section (33), a third bent portion (31) and a third connecting rod section (32), wherein the third connecting rod section (32) extends along a second horizontal direction, and the third energy-absorbing section (33) is arranged opposite to the floor slab and is located outside the longitudinal steel bar (4b). The third bending portion (31) is located between the third connecting rod section (32) and the third energy absorbing section (33); one end of the third connecting rod section (32) is connected to the floor slab, and the other end is connected to the third energy absorbing section (33) through the third bending portion (31); the third energy absorbing section (33) is connected to the first inserted rib and the second inserted rib located on the target side.
12. The ring-buckle steel bar connection structure according to claim 11, characterized in that: The number of the third connecting rod segments (32) is two, and the two connecting rod segments are arranged at intervals in the vertical direction; the number of the third bending portions (31) is two, and the two third bending portions (31) are arranged opposite to each other in the vertical direction and bent outwards; The third energy absorbing section (33) extends in the vertical direction, the third energy absorbing section (33) is located between the two third bending portions (31), and the two ends of the third energy absorbing section (33) are respectively connected to the two third connecting rod sections (32) through the two third bending portions (31).
13. The ring-buckle steel bar connection structure according to claim 12, characterized in that: The third energy-absorbing section (33), the two third connecting rod sections (32) and the two third bending portions (31) together form a third insertion cavity; The third insertion cavity is partially aligned with the first insertion cavity of the first shear wall energy-absorbing steel bar (1) and the second insertion cavity of the second shear wall energy-absorbing steel bar (2), and the longitudinal steel bar (4b) passes through the first insertion cavity, the second insertion cavity and the third insertion cavity in sequence. Wherein, the longitudinal reinforcement (4b) partially penetrates the third insertion cavity, that is, the first insertion rib and the second insertion rib located on the target side penetrate the third insertion cavity.
14. A nuclear power plant building structure, characterized in that: include: A first shear wall, a second shear wall, a floor slab, and a buckled steel bar connection structure according to any one of claims 1 to 13; The ring-buckle steel bar connection structure is located between the first shear wall, the second shear wall and the floor slab, and the first shear wall energy-absorbing steel bar (1), the second shear wall energy-absorbing steel bar (2) and the floor slab energy-absorbing steel bar (3) of the ring-buckle steel bar connection structure are respectively connected to the first shear wall, the second shear wall and the floor slab.
15. A method for manufacturing a nuclear power plant building structure as claimed in claim 14, characterized in that: The steps include: Anchoring the longitudinal steel bars (4b) of the ring-buckle steel bar connection structure; The first shear wall energy-absorbing steel bar (1), the second shear wall energy-absorbing steel bar (2) and the floor slab energy-absorbing steel bar (3) in the ring-buckle steel bar connection structure are sequentially sleeved onto the longitudinal steel bar (4b) in a predetermined order; The first shear wall energy-absorbing steel bar (1), the second shear wall energy-absorbing steel bar (2) and the floor slab energy-absorbing steel bar (3) are fixed to the longitudinal steel bar (4b); The first shear wall energy-absorbing steel bars (1), the second shear wall energy-absorbing steel bars (2) and the floor slab energy-absorbing steel bars (3) are cast in situ respectively to obtain a first shear wall, a second shear wall and a floor slab, wherein the first shear wall is connected to the first shear wall energy-absorbing steel bars (1), the second shear wall is connected to the second shear wall energy-absorbing steel bars (2), and the floor slab is connected to the floor slab energy-absorbing steel bars (3).
16. The method according to claim 15, characterized in that The number of the first shear wall energy-absorbing steel bars (1), the second shear wall energy-absorbing steel bars (2) and the floor slab energy-absorbing steel bars (3) are all multiple, The predetermined sequence is that the first shear wall energy-absorbing steel bar (1), the floor slab energy-absorbing steel bar (3), the second shear wall energy-absorbing steel bar (2), and the floor slab energy-absorbing steel bar (3) are arranged in a cyclical sequence.