Node structure of waist truss and outrigger truss of super high-rise building

Abstract

The invention discloses a waist truss and outrigger truss node structure of a super high-rise building, and belongs to the technical field of super high-rise building structures. The system mainly comprises a core tube, the core tube is provided with a first truss and a second truss, and a first node is arranged between the first truss and the second truss; an outer frame column is arranged at the outer ring position of the core tube; the outrigger truss is connected between the first node and the outer frame; the waist trusses are connected between the two adjacent groups of outer frames; a box column is arranged at the first node and connected with the first truss, the second truss and the outrigger truss. According to the joint structure of the waist truss and the outrigger truss of the super high-rise building, the connecting position of the outrigger truss and the core tube is arranged to be in a box column shape, and therefore the problems that prototype steel joint structures are complex, reinforcing steel bars are dense, and steel reinforced concrete connecting joints are crossed and collided are solved.

Description

Technical Field

[0001] The present application relates to the technical field of super high-rise building structures, and specifically to the node structure of waist trusses and outrigger trusses of super high-rise buildings. Background Art

[0002] In super high-rise building structures, in order to meet the displacement and deformation indicators between structural layers, strengthening layers are usually set at appropriate positions along the height;

[0003] After the reinforcement layer is set, the stiffness of the structure along the height direction is uneven. The sudden change in stiffness brings about a sudden change in internal force. Therefore, the internal force of the components in the reinforcement layer and the upper and lower adjacent layers will change greatly. The setting is a directional change. The greater the stiffness of the reinforcement layer, the greater the degree of sudden change in internal force. This sudden change will produce a weak layer effect.

[0004] In order to solve the above problems, an outrigger truss is generally designed between the core tube of the reinforcement layer and the outer frame column, and a waist truss (also called: belt truss) is designed between the outer frame columns. Because the outrigger truss and the waist truss are connected at the corner of the core;

[0005] However, the above setting will result in a large number of steel sections at the same node, with up to ten steel sections connected to one node. The node connection structure is complex, and the steel structure construction and processing are very difficult. At the same time, the vertical steel bars at the node collide with the steel sections and cannot be vertically penetrated. Therefore, it is necessary to provide a waist truss and an outrigger truss node structure for super-high-rise buildings to solve the above problems.

[0006] It should be noted that the above information disclosed in this background technology section is only for understanding the background technology of the present application concept, and therefore, it may contain information that does not constitute the prior art. Summary of the invention

[0007] Based on the above problems existing in the prior art, the problem to be solved by the present application is: to provide a node structure of a waist truss and an outrigger truss for a super high-rise building, which solves the problem of steel bar collision at the node.

[0008] The technical solution adopted by the present application to solve its technical problems is: a node structure of a waist truss and an outrigger truss of a super-high-rise building, including a core tube, the core tube having a first truss and a second truss, a first node being arranged between the first truss and the second truss; an outer frame, the outer frame column being arranged at the outer circle position of the core tube; an outrigger truss, the outrigger truss being connected between the first node and the outer frame; a waist truss, the waist truss being connected between two adjacent groups of the outer frames; a box-type column being arranged at the first node, the box-type column being respectively connected to the first truss, the second truss and the outrigger truss.

[0009] Furthermore, a transition section is provided between the first truss and the box-type column, and between the second truss and the box-type column, and the transition section is a variable slope structure.

[0010] Furthermore, the slope change taper is 1:6.

[0011] Furthermore, a node box is provided on the outer side of the box-type column, and the node box is constructed of steel bars, and the steel bars are arranged in parallel to form a grid.

[0012] Furthermore, bolts are provided on the first truss, the second truss and the outrigger truss.

[0013] Furthermore, the outrigger truss includes an upper chord at the upper end and a lower chord at the lower end, a web member is connected between the upper chord and the lower chord, and a node plate is provided at a corner where the upper chord, the lower chord and the web member are connected.

[0014] Furthermore, the node plate is provided with a plug welding hole, and a reinforcement bar is plug welded in the plug welding hole.

[0015] Furthermore, the node plate is made of high-rise steel.

[0016] Furthermore, a connection box is provided at the position where the web member and the upper chord member are connected, and the connection box is a spacer-windowed box-type structure.

[0017] Furthermore, a settlement node is arranged at the end of the web, and a positioning card code is arranged at the position of the settlement node.

[0018] The beneficial effects of the present application are as follows: the node structure of the waist truss and outrigger truss of the super-high-rise building provided by the present application solves the problems of complex structure of the prototype steel node, dense steel bars, and cross-collision at the steel-concrete connection node by setting the connection position of the outrigger truss and the core tube to a box-type column.

[0019] In addition to the above-described purposes, features and advantages, the present application also has other purposes, features and advantages. The present application will be further described in detail with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings in the specification, which constitute a part of the present application, are used to provide further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0021] In the attached picture:

[0022] Figure 1 It is an overall schematic diagram of the node structure of the waist truss and outrigger truss of the super high-rise building in this application;

[0023] Figure 2 for Figure 1 Detailed structure diagram at the first node in the figure;

[0024] Figure 3 for Figure 2 Schematic diagram of the local structure at A in the middle;

[0025] Figure 4 for Figure 1 Schematic diagram of the lateral structure of the middle outrigger truss;

[0026] Figure 5 for Figure 4 Structural diagram of the middle settlement node;

[0027] Figure 6 for Figure 4 Schematic diagram of the box-type structure with windows in the middle partition of the upper chord, lower chord and web members;

[0028] Among them, the reference numerals in the figure are:

[0029] 1. Core tube; 11. First truss; 12. Second truss; 2. Outrigger truss; 21. Upper chord; 211. First window; 212. First stiffening plate; 22. Lower chord; 221. Second window; 222. Second stiffening plate; 23. Web member; 231. Third window; 232. Third stiffening plate; 3. Waist truss; 4. External frame column; 5. First node; 51. Box column; 52. Node box; 53. Stud; 54. Transition section; 6. Settlement node; 61. Positioning card code; 7. Connection box; 8. Node plate; 81. Plug welding hole. DETAILED DESCRIPTION

[0030] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0031] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0032] like Figure 1As shown, the present application provides a waist truss and outrigger truss node structure of a super high-rise building, including a core tube 1 and multiple groups of outer frame columns 4 arranged on the outer ring of the core tube 1, wherein the core tube 1 is a square structure, and is spliced ​​by a first truss 11 and a second truss 12, and a first node 5 is arranged at the splicing position of the first truss 11 and the second truss 12, and an outrigger truss 2 is connected between the first node 5 and the outer frame column 4, and a waist truss 3 is connected between the multiple groups of outer frame columns 4, so that a complete reinforcement layer structure is formed by the core tube 1, the outer frame column 4, the outrigger truss 2 and the waist truss 3;

[0033] In the present application, the main purpose of setting the outrigger truss 2 between the outer frame column 4 and the core tube 1 is to reduce the lateral displacement of the structure. Its mechanism is to increase the axial force of the outer frame column under the horizontal load, thereby increasing the overturning moment borne by the reinforced layer structure, while reducing the overturning moment of the core tube 1. The reverse bending effect formed by it on the reinforced layer structure can effectively increase the lateral stiffness of the reinforced layer structure, reduce the lateral displacement of the structure, and generally reduce the shear force sharing ratio of the outer frame column 4;

[0034] At the same time, in the present application, the waist truss 3 is arranged around the reinforcement layer structure to make the axial force borne by each outer frame column 4 change evenly, so as to improve the ability of the outer frame column 4 to resist the overturning moment and reduce the lateral displacement. Its effect is slightly smaller than that of the outrigger truss 2, and it can play the role of a "waistband" for the outer frame column 4;

[0035] like Figure 2-Figure 3 As shown, the first node 5 includes a box column 51 located on the inside, and the box column 51 is connected to the first truss 11, the second truss 12 and the outrigger truss 2 respectively, and a transition section 54 is provided between the first truss 11 and the box column 51, and between the second truss 12 and the box column 51. The transition section 54 is a variable slope design, and the variable slope taper is 1:6, so as to achieve reasonable force;

[0036] A node box 52 is arranged outside the box column 51. The node box 52 is constructed of steel bars, and the steel bars are arranged in parallel to form a grid. At the same time, the gaps between the steel bars are just enough to ensure that the horizontal steel bars of the shear wall can be directly inserted and anchored, so that the stirrups are replaced by the steel bars in the form of a grid to form a lateral constraint.

[0037] Bolts 53 are provided on the first truss 11, the second truss 12 and the outrigger truss 2;

[0038] like Figure 4As shown, the outrigger truss 2 includes an upper chord 21 at the upper end and a lower chord 22 at the lower end, a web 23 is connected between the upper chord 21 and the lower chord 22, and a node plate 8 is provided at the corner where the upper chord 21, the lower chord 22 and the web 23 are connected, and the node plate 8 is a double-node plate arrangement, that is, a layer of node plate 8 is covered at both the upper and lower ends, thereby forming a hollow structure on the side of the node box 52 to ensure that the vertical steel bars of the core tube 1 can pass through;

[0039] like Figure 4 As shown, a plug welding hole 81 is provided on the node plate 8, and a reinforcement is plug welded in the plug welding hole 81, so that the reinforcement is plug welded at the position of the node plate 8 to form a horizontal constraint. The reinforcement holes are precisely processed in the factory, and the spacing of the reinforcement holes is the same as the spacing of the reinforcement. After the steel structure and civil engineering reinforcement are installed, short reinforcements are inserted from the reinforcement holes on both sides of the node plate 8, and then the two ends of the short reinforcement are plug welded by punching holes to form the node plate 8 constraint, thereby enhancing the connection stiffness of the node plate 8;

[0040] In order to increase the strength of the above densely packed nodes, ordinary concrete is changed to self-compacting concrete, and the steel strength at the nodes is changed from Q355C to Q420GJ (high-rise steel);

[0041] The upper chord 21, lower chord 22 and web 23 of the outrigger truss 2 are all made of inverted H-shaped steel, and holes are opened at a certain interval at the web 23 to ensure that the vertical steel bars of the shear wall of the core tube 1 can pass normally;

[0042] In order to increase the node stiffness of the connection between the upper chord 21, the lower chord 22 and the web 23 of the outrigger truss 2, as shown in FIG. Figure 4 As shown, a connection box 7 is provided at the connection position of the web member 23 and the upper chord member 21. The connection box 7 is a box-type structure with a partition plate window, so that the gap between the partition plates can ensure the normal flow of concrete, and as shown in FIG. Figure 6 As shown, a window is added in the middle of the connecting box 7, and the window includes a first window 211, a second window 221 and a third window 231 respectively opened on the upper chord 21, the lower chord 22 and the web 23, and a stiffening plate is added at the same time, and the stiffening plate also includes a first stiffening plate 212, a second stiffening plate 222 and a third stiffening plate 232 arranged on the first window 211, the second window 221 and the third window 231, so as to enhance the stiffness at the node and ensure that the concrete can be poured densely;

[0043] Since the core tube 1, the outer frame column 4 and the floor construction are staggered, in order to meet this settlement difference and reduce the internal stress of the outrigger truss 2, such as Figure 4-Figure 5 As shown, a settlement node 6 is provided at the end of the web member 23, and a positioning card code 61 is provided at the position of the settlement node 6 for temporary consolidation. After the settlement of the tower structure is stable, full penetration welding is performed.

[0044] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. The node structure of waist truss and outrigger truss of super high-rise building is characterized by: include: A core tube (1), the core tube (1) comprising a first truss (11) and a second truss (12), wherein a first node (5) is provided between the first truss (11) and the second truss (12); An outer frame (4), wherein the outer frame column (4) is arranged at an outer circle position of the core tube (1); an outrigger truss (2), the outrigger truss (2) being connected between the first node (5) and the outer frame (4); A waist truss (3), the waist truss (3) being connected between two adjacent groups of the outer frames (4); Wherein: a box column (51) is arranged at the first node (5), and the box column (51) is respectively connected to the first truss (11), the second truss (12) and the cantilever truss (2).

2. The node structure of waist truss and outrigger truss of super high-rise building according to claim 1 is characterized by: A transition section (54) is provided between the first truss (11) and the box-type column (51), and between the second truss (12) and the box-type column (51), and the transition section (54) is a variable slope structure.

3. The node structure of waist truss and outrigger truss of super high-rise building according to claim 2 is characterized by: The slope change taper is 1:

6.

4. The node structure of waist truss and outrigger truss of super high-rise building according to claim 2 is characterized by: A node box (52) is arranged outside the box-type column (51), and the node box (52) is constructed of steel bars, which are arranged in parallel to form a grid.

5. The node structure of waist truss and outrigger truss of super high-rise building according to claim 1 is characterized by: The first truss (11), the second truss (12) and the outrigger truss (2) are all provided with bolts (53).

6. The node structure of waist truss and outrigger truss of super high-rise building according to claim 1 is characterized by: The outrigger truss (2) comprises an upper chord (21) located at the upper end and a lower chord (22) located at the lower end, a web member (23) is connected between the upper chord (21) and the lower chord (22), and a node plate (8) is provided at a corner where the upper chord (21), the lower chord (22) and the web member (23) are connected.

7. The node structure of waist truss and outrigger truss of super high-rise building according to claim 6 is characterized by: The node plate (8) is provided with a plug welding hole (81), and a tie rod is plug welded in the plug welding hole (81).

8. The node structure of waist truss and outrigger truss of super high-rise building according to claim 7 is characterized by: The node plate (8) is made of high-quality steel.

9. The node structure of waist truss and outrigger truss of super high-rise building according to claim 6, characterized in that: A connection box (7) is provided at the position where the web member (23) and the upper chord member (21) are connected, and the connection box (7) is a partition plate window-type box-type structure.

10. The node structure of waist truss and outrigger truss of super high-rise building according to claim 9, characterized in that: A settlement node (6) is arranged at the end of the web member (23), and a positioning card code (61) is arranged at the position of the settlement node (6).

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