Roof-out variable cross-section steel column anchoring node
By using variable cross-section steel column anchor nodes in the construction of high-rise buildings, using column base plates and main anchor bolts to connect steel pipe columns, and anchoring through column longitudinal bars and column stirrups, the problem of high construction costs in the existing technology is solved. Stable connections and economical construction are achieved.
Patent Information
- Application Number
- CN202420967756.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-07
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-05-07
AI Technical Summary
In high-rise building construction, when the cross-sectional size of the steel structure column on the roof is greater than the frame column size of the next floor, the prior art needs to increase the cross-sectional size of the frame column on the next floor, resulting in higher construction costs.
A steel column anchor node with variable cross-section outside the roof is used to connect the steel pipe columns through the column base plate and the main anchor bolt. The column longitudinal bars and column stirrups are used for anchoring, which avoids the practice of increasing the cross-section size of the roof layer frame column. .
It achieves a stable connection of steel structures between different sections, reduces construction costs and improves construction economy.
Smart Images
Figure CN222375677U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of steel structure construction, in particular to an anchoring node for a variable-section steel column protruding from a roof. Background Art
[0002] In construction projects, the main building structure is generally constructed using steel structure and concrete. As the height of high-rise buildings gradually increases, the upper and lower cross-sections of the supporting steel columns will also change. It is necessary to ensure a stable connection between steel columns of different cross-sections to ensure the firmness of the building and the subsequent earthquake resistance.
[0003] In the prior art, when the cross-sectional size of the steel structure column on the roof is larger than that of the frame column on the next layer, the traditional approach is to increase the cross-sectional size of the frame column on the next layer as a whole to ensure that the steel structure column on the roof and the frame column on the next layer are subjected to axial force. This method requires increasing the cross-sectional size of the entire bottom layer, and the construction cost is relatively high. Therefore, a variable-section steel column anchoring node on the roof is proposed to solve the above problem. Utility Model Content
[0004] In order to solve the above technical problems, the utility model proposes a roof variable-section steel column anchoring node, which does not need to increase the cross-sectional size of the roof frame column as a whole, reduces construction costs, and improves the economy of construction.
[0005] The technical solution to achieve the purpose of the utility model is: a roof variable-section steel column anchor node, including a concrete column and a steel pipe column, the concrete column is provided with a column foot plate, the steel pipe column is arranged on the column foot plate, the steel pipe column is provided with column longitudinal reinforcement outside, the column longitudinal reinforcements are connected by column stirrups, and the bottom ends of the column longitudinal reinforcements are anchored obliquely downward into the concrete column.
[0006] In some embodiments, a plurality of bolts are disposed on the surface of the steel pipe column, a main anchor bolt is disposed on the steel pipe column, the steel pipe column is connected to the column foot bottom plate through the main anchor bolt, and an end anchor plate is disposed at the bottom end of the main anchor bolt.
[0007] In some embodiments, a cross shear key is provided at the bottom end of the steel pipe column, and a corresponding reserved key slot is provided in the concrete column.
[0008] Compared with the prior art, the utility model has the following significant advantages:
[0009] The utility model can firmly connect steel structures with different cross-sections by connecting the steel pipe columns with the column foot bottom plate and the main anchor bolts. In terms of construction technology, there is no need to increase the cross-sectional size of the roof frame column, thereby reducing construction costs and improving the economy of construction.
[0010] The invention solves the problem of high construction cost of increasing the cross-sectional size of the frame column of the roof layer when the cross-sectional size of the steel structure column of the roof layer is larger than that of the frame column of the next layer. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] The utility model is further explained below in conjunction with the accompanying drawings and embodiments:
[0012] Figure 1 It is a schematic diagram of the main plane structure provided by the utility model in one embodiment;
[0013] Figure 2 It is a schematic diagram of the steel pipe column structure provided in one embodiment of the utility model;
[0014] Figure 3 It is a schematic diagram of the main anchor bolt structure provided in one embodiment of the utility model.
[0015] Description of reference numerals:
[0016] 1. Concrete column; 2. Steel pipe column; 3. Column base plate; 4. Column longitudinal reinforcement; 5. Column stirrups; 6. Studs; 7. Main anchor bolts; 8. End anchor plate; 9. Cross shear key. DETAILED DESCRIPTION
[0017] The utility model is described in detail below, and the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0018] The utility model provides a roof variable cross-section steel column anchoring node through improvement. The technical solution of the utility model is:
[0019] like Figure 1 As shown, a variable-section steel column anchor node for a roof comprises a concrete column 1 and a steel pipe column 2. The cross-section of the lower section of the concrete column 1 is smaller than that of the upper section. The connection between the upper and lower sections of the concrete column 1 is in an expansion state from bottom to top, and the expansion angle is forty-five degrees. A column foot plate 3 is arranged in the concrete column 1, and the steel pipe column 2 is arranged on the column foot plate 3. The steel pipe column 2 and the column foot plate 3 are welded and fixed. A column longitudinal reinforcement 4 is arranged outside the steel pipe column 2. The column longitudinal reinforcements 4 are connected by column stirrups 5. The steel bars within the range of the column stirrups 5 and the column longitudinal reinforcement 4 can be directly anchored into the column. The bottom end of the column longitudinal reinforcement 4 is anchored obliquely downward into the concrete column 1. The bottom end of the column longitudinal reinforcement 4 is anchored obliquely downward at an angle of forty-five degrees into a section of the concrete column 1 with a smaller cross-section.
[0020] like Figure 2 and Figure 3 As shown, in one embodiment, a plurality of studs 6 are arranged on the surface of the steel pipe column 2, a main anchor bolt 7 is arranged on the steel pipe column 2, the steel pipe column 2 is connected to the column foot bottom plate 3 through the main anchor bolt 7, the main anchor bolt 7 is connected by welding, the steel pipe column 2 and the column foot bottom plate 3 are reinforced and anchored, the top of the main anchor bolt 7 is made by double nut spot welding, a total of three nuts, two on top and one on bottom, which will enhance the support and connection of the column foot bottom plate 3, and the bottom end of the main anchor bolt 7 is provided with an end anchor plate 8;
[0021] A cross shear key 9 is provided at the bottom end of the steel pipe column 2. The shear key is a commonly used connecting part, which is mainly used to resist shear loads. It puts the components in close contact through pre-compression to form a rigid connection to avoid relative movement of the components in the horizontal direction. Corresponding reserved key slots are provided in the concrete column 1, and the reserved key slots are reserved before pouring concrete.
[0022] The specific working method is: when the variable-section steel column anchor node of the roof is installed, first let part of the main reinforcement of the roof layer frame column extend upward from the roof, and reserve a straight thread head at the end of the column main reinforcement extending from the roof. The straight thread joint is connected with a first-level joint, which is convenient for the subsequent use of a straight thread joint to extend the main reinforcement of the frame column. The lower part of the steel bar of the column foot plate 3 anchor node is anchored at a 45-degree angle into the next layer of frame column. The anchoring length is based on the seismic anchoring length (Lae). At the same time, the upper part extends out of the roof and reserves a straight thread head. Then, the main anchor bolt 7 is welded and fixed to the column foot plate 3 and anchored into the next layer of frame column. The stirrups of the roof anchor node are tied, and then concrete is poured and a cross shear key 9 groove is reserved. The stirrups of the anchor node column foot are the same as the stirrups 5 of the frame column. The concrete strength is unified with the concrete of the lower column. The roof steel structure connection process is then carried out.
[0023] The technical means disclosed in the utility model are not limited to the technical means disclosed in the above technical means, but also include technical solutions composed of equivalent replacement of the above technical features. Matters not covered in the utility model belong to the common knowledge of those skilled in the art.
Claims
1. A roof variable-section steel column anchoring node, comprising a concrete column (1) and a steel pipe column (2), characterized in that: A column foot plate (3) is arranged inside the concrete column (1), the steel pipe column (2) is arranged on the column foot plate (3), column longitudinal reinforcement (4) is arranged outside the steel pipe column (2), the column longitudinal reinforcement (4) is connected by column stirrups (5), and the bottom end of the column longitudinal reinforcement (4) is anchored obliquely downward into the concrete column (1).
2. The variable-section steel column anchoring node for a roof according to claim 1, characterized in that: A plurality of bolts (6) are arranged on the surface of the steel pipe column (2), a main anchor bolt (7) is arranged on the steel pipe column (2), the steel pipe column (2) is connected to the column foot bottom plate (3) via the main anchor bolt (7), and an end anchor plate (8) is arranged at the bottom end of the main anchor bolt (7).
3. The variable-section steel column anchoring node for a roof according to claim 1, characterized in that: A cross shear key (9) is provided at the bottom end of the steel pipe column (2), and a corresponding reserved key slot is provided in the concrete column (1).