Reinforcing structure of reinforced concrete member at latticed column intersection node after steel bar cutting

Abstract

The utility model belongs to the technical field of building construction, and particularly relates to a reinforcing structure of a reinforced concrete member after steel bars of a latticed column intersection node are cut off, which comprises prefabricated steel plate members which are symmetrically arranged on two sides of a latticed column and are formed by concave steel members processed by two steel plates, and the prefabricated steel plate members are wrapped on the outer side of the latticed column in a matched mode. When lattice column angle steel is welded to the prefabricated steel plate components, two steel components forming the prefabricated steel plate components are welded to each other, lattice column inner penetrating steel bars penetrate through lattice column nodes, lattice column outer side bypassing steel bars penetrate through the outer sides of the lattice column nodes, and cut steel bars which are blocked by the lattice column nodes and need to be cut are connected with the prefabricated steel plate components in a welded mode. Due to the arrangement of the prefabricated steel plate members, the strength requirement of the original design of the reinforced concrete members at the lattice column joints is met with low economic cost, and effective guarantee can be provided for safety of reinforced concrete supports in foundation pit engineering and reinforced concrete members of main body structure engineering in the operation period of the reinforced concrete members.

Description

Technical Field

[0001] The utility model belongs to the technical field of building construction, and in particular relates to a reinforcement structure after the steel bars of a reinforced concrete component are cut off at the intersection node of a lattice column. Background Art

[0002] Reinforced concrete support is commonly used in deep foundation pit projects, and reinforced concrete internal support usually requires a vertical support structure. The vertical support structure of the internal support usually adopts a lattice column composed of angle steel and steel tie plate. This structural form has the advantages of convenient installation and removal, certain recyclable economy, etc., and this structural form can also allow structural steel bars such as concrete support and main structure beams and slabs to pass between angle steels and on both sides without affecting the penetration of the main reinforcement. However, due to the increasing depth of foundation pit projects, the increasingly complex surrounding environment, and the increasingly stringent requirements for foundation pit deformation control and environmental protection, the reinforcement of concrete support is becoming stronger and the steel bars are becoming denser. When encountering structures such as frame beams of the main structure, due to the strong reinforcement of the main structure, there are also problems of large steel bar diameter and tight arrangement. The steel bars of the above-mentioned reinforced concrete structural components have large diameters and small spacing. It is not easy to adjust the position at the intersection of the lattice columns, and it is impossible to find enough space for all the steel bars to pass through. Therefore, the local steel bars will not be able to pass smoothly and need to be cut off. There are no good reinforcement measures for this kind of steel bar cut-off situation. In many cases, the cut steel bars are welded to the lattice column angle steel or steel tie plate, or additional steel bars are added to the gap of the lattice column and overlapped with the broken steel bars for reinforcement. However, the strength of these welded or overlapped steel bars is insufficient, which poses a safety hazard to the reinforced concrete support or main structure.

[0003] Therefore, in order to address the safety issues of the above-mentioned measures of reinforced concrete support at lattice columns or cutting off the steel bars of the main structure for reinforcement, measures need to be taken to improve the reinforcement measures for cut steel bars so that the cut steel bars have sufficient and reliable tensile strength at the lattice column node position to meet the strength of the reinforced concrete components originally designed. Utility Model Content

[0004] In view of the above problems, the purpose of the utility model is to provide a reinforcement structure after the steel bars of the reinforced concrete components are cut off at the intersection nodes of lattice columns, so as to solve the problem that the existing steel bars cut off at the intersection nodes of lattice columns have no good reinforcement measures, which poses a safety hazard to the reinforced concrete support or main structure.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: a reinforcement structure after the steel bars of the reinforced concrete components at the intersection nodes of lattice columns are cut off, including prefabricated steel plate components symmetrically arranged on both sides of the lattice column, which are composed of two steel plates processed into "concave" steel components, the prefabricated steel plate components are adapted to be wrapped around the outside of the lattice column, and while the prefabricated steel plate components are welded to the lattice column angle steel, the two steel components constituting the prefabricated steel plate components are welded to each other, the lattice column nodes are penetrated by steel bars passing through the lattice column, the outside of the lattice column nodes are penetrated by steel bars bypassing the outside of the lattice column, and the cut steel bars that are blocked and need to be cut off at the lattice column nodes are welded to the prefabricated steel plate components.

[0006] The beneficial effects of the utility model are as follows: the original design strength requirements of the reinforced concrete components at the lattice column nodes are achieved at a relatively low economic cost through the provision of prefabricated steel plate components, and effective protection can be provided for the safety of the reinforced concrete supports in foundation pit projects and the reinforced concrete components of the main structure projects during their operation period.

[0007] In order to effectively ensure the welding quality of cut steel bars and prefabricated steel plate components;

[0008] As a further improvement of the above technical solution: the two steel components constituting the prefabricated steel plate component are relatively inserted into the lattice column on both sides of the lattice column node in a direction perpendicular to the axial direction of the cut steel bars, and a welding seam between the steel bars and the prefabricated steel plate is formed between the cut steel bars and the prefabricated steel plate component.

[0009] The beneficial effect of this improvement is that the cut steel bars can be flatly pressed against the surface of the prefabricated steel plate component, thereby increasing the weldable length of the welding seam between the steel bars and the prefabricated steel plate, and improving the welding strength between the cut steel bars and the prefabricated steel plate component.

[0010] In order to fully ensure the connection strength of the cut steel bars at the nodes;

[0011] As a further improvement of the above technical solution: the two concave steel plates constituting the prefabricated steel plate component are simultaneously welded with the cut steel bars located on both sides of the prefabricated steel plate component.

[0012] The beneficial effect of this improvement is that since the cut steel bars on both sides of the node are welded front and back on the same steel plate constituting the prefabricated steel plate component, the same steel bar can achieve direct and effective tensile strength transfer on the same prefabricated steel plate after being cut.

[0013] In order to effectively protect prefabricated steel plate components;

[0014] As a further improvement of the above technical solution: the edge of the prefabricated steel plate component does not protrude from the surface of the reinforced concrete structural component cast on the outside of the lattice column.

[0015] The beneficial effect of this improvement is that the prefabricated steel plate component is entirely wrapped inside the reinforced concrete structural component, thereby preventing the steel structure from being exposed, accelerating corrosion, and causing other safety problems.

[0016] In order to fully ensure the overall structural strength of the prefabricated steel plate components;

[0017] As a further improvement of the above technical solution: a welding seam between the prefabricated steel plates is formed between the two oppositely arranged concave steel plates constituting the prefabricated steel plate component.

[0018] The beneficial effect of this improvement is that the structural strength of the prefabricated steel plate component can be effectively ensured by welding the two steel plates constituting the prefabricated steel plate component at the welding seam between the prefabricated steel plates.

[0019] In order to fully ensure the connection strength between the prefabricated steel plate components and the lattice columns;

[0020] As a further improvement of the above technical solution: a welding seam between the lattice column and the prefabricated steel plate is formed between the prefabricated steel plate component and the lattice column.

[0021] The beneficial effect of this improvement is that by welding the prefabricated steel plate components and the lattice columns at the welding seams between the prefabricated steel plates, the connection strength between the prefabricated steel plate components and the lattice columns can be effectively guaranteed.

[0022] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a plan view of the prefabricated steel plate component in the utility model;

[0024] Figure 2 This is a schematic diagram of the connection of the utility model Figure 1 ;

[0025] Figure 3 This is a schematic diagram of the connection of the utility model Figure 2 ;

[0026] In the figure: 1. Prefabricated steel plate component; 2. Steel bars passing through lattice columns; 3. Cut steel bars; 4. Steel bars passing around the outside of lattice columns; 5. Lattice columns; 61. Welding seams between steel bars and prefabricated steel plates; 62. Welding seams between prefabricated steel plates; 63. Welding seams between lattice columns and prefabricated steel plates. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the protection scope of the present invention.

[0028] Embodiment 1:

[0029] like Figure 1 —3 shows: a reinforcement structure after the steel bars of a reinforced concrete member are cut off at the intersection of a lattice column, comprising a prefabricated steel plate member 1 symmetrically arranged on both sides of the lattice column 5, which is composed of two steel plates processed into a "concave" steel member, the prefabricated steel plate member 1 is adapted to be wrapped around the outside of the lattice column 5, and while the prefabricated steel plate member 1 is welded to the lattice column 5 angle steel, the two steel members constituting the prefabricated steel plate member 1 are welded to each other, the lattice column 5 node is passed through by a lattice column inner through steel bar 2, the outer side of the lattice column 5 node is passed through by a lattice column outer side bypass steel bar 4, the cut steel bar 3 that is blocked and needs to be cut off at the lattice column 5 node is welded to the prefabricated steel plate member 1, and the prefabricated steel plate member 1 ... The prefabricated steel plate component 1 can achieve the original design strength requirements of the reinforced concrete components at the lattice column nodes at a relatively low economic cost through the setting of the prefabricated steel plate component 1, which can provide effective protection for the safety of the reinforced concrete support in the foundation pit project and the reinforced concrete components of the main structure project during their operation period. The two steel components constituting the prefabricated steel plate component 1 are relatively inserted into the lattice column 5 on both sides of the lattice column 5 node in the vertical direction of the axial direction of the cut steel bar 3. A welding seam 61 between the cut steel bar 3 and the prefabricated steel plate component 1 is formed. The cut steel bar 3 can be flatly attached to the surface of the prefabricated steel plate component 1, thereby increasing the strength of the steel bar and the prefabricated steel plate component 1. The weldable length of the steel plate welding seam 61 is increased, and the welding strength between the cut steel bars 3 and the prefabricated steel plate component 1 is improved. The two concave steel plates constituting the prefabricated steel plate component 1 are simultaneously welded to the cut steel bars 3 on both sides of the prefabricated steel plate component 1. Since the cut steel bars on both sides of the node are welded front and back on the same steel plate constituting the prefabricated steel plate component 1, the same steel bar can be directly and effectively transferred to the tensile strength on the same prefabricated steel plate after being cut. The edge of the prefabricated steel plate component 1 does not protrude from the surface of the reinforced concrete structural component cast on the outside of the lattice column 5, and the prefabricated steel plate component 1 is wrapped in the reinforced concrete structural component as a whole. The interior of the component is prevented from being exposed to the steel structure and accelerating rust and causing other safety problems. A welding seam 62 between the prefabricated steel plates is formed between the two relatively arranged concave steel plates constituting the prefabricated steel plate component 1. By welding the two steel plates constituting the prefabricated steel plate component 1 at the welding seam 62 between the prefabricated steel plates, the structural strength of the prefabricated steel plate component 1 can be effectively guaranteed. A welding seam 63 between the lattice column and the prefabricated steel plate is formed between the prefabricated steel plate component 1 and the lattice column 5. By welding the prefabricated steel plate component 1 and the lattice column 5 at the welding seam 62 between the prefabricated steel plates, the connection strength of the prefabricated steel plate component 1 and the lattice column 5 can be effectively guaranteed.

[0030] The working principle of this technical solution is:

[0031] 1. First, according to the arrangement of the steel bars of the reinforced concrete member and the structural dimensions of the lattice column 5, determine the number of steel bars that cannot be penetrated and need to be cut at the nodes of the lattice column 5;

[0032] 2. According to the diameter, type and quantity of the cut steel bars 3, the material strength and geometric dimensions required for the prefabricated steel plate component 1 are determined in combination with the structural force analysis calculation and construction requirements. The plane dimensions of the "concave" inner side of the prefabricated steel plate component 1 should be consistent with the plane dimensions of the lattice column 5. In addition, after the prefabricated steel plate component 1 is installed on the lattice column 5, it should not extend beyond the outside of the structural outline of the reinforced concrete component to be constructed;

[0033] 3. When tying the steel bars of the reinforced concrete components at the node position of the lattice column 5, "insert" the two aforementioned prefabricated steel plate components 1 on the lattice column at the intersection node, and perform a certain welding between the prefabricated steel plate components 1 and the lattice column 5 to ensure that the prefabricated steel plate components 1 are firmly installed on the lattice column 5;

[0034] 4. Analyze and obtain the steel bars that need to be cut, cut them at the conflicting position of the lattice column 5, and weld the steel bars on both sides after cutting to the adjacent prefabricated steel plate components 1 respectively. The welding length and quality must meet the relevant requirements. In addition, it is necessary to verify that the proportion of the steel bars that need to be welded after cutting to the total number of steel bars does not exceed the relevant requirements. Since the steel bars on both sides of the node are welded on the same prefabricated steel plate component 1, the same steel bar can achieve direct and effective tensile strength transfer on the same prefabricated steel plate after cutting;

[0035] 5. After setting up the prefabricated steel plate component 1 and completing the node position where the steel bars are connected to the prefabricated steel plate component 1, concrete pouring construction shall be carried out in accordance with the original design requirements, and maintenance shall be carried out in accordance with relevant requirements.

[0036] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0037] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. The above is only a preferred implementation of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present invention.

Claims

1. A reinforcement structure after the steel bars of a reinforced concrete member are cut off at the intersection of lattice columns, characterized in that: The invention comprises a prefabricated steel plate component (1) symmetrically arranged on both sides of a lattice column (5), which is composed of two steel plates processed into a "concave" steel component. The prefabricated steel plate component (1) is adapted to be wrapped around the outside of the lattice column (5). When the prefabricated steel plate component (1) is welded to the angle steel of the lattice column (5), the two steel components constituting the prefabricated steel plate component (1) are welded to each other. A lattice column inner through steel bar (2) passes through the node of the lattice column (5), and a lattice column outer side bypass steel bar (4) passes through the outer side of the lattice column (5). The cut steel bar (3) that is blocked by the node of the lattice column (5) and needs to be cut is welded to the prefabricated steel plate component (1).

2. The reinforcement structure of a reinforced concrete member after the steel bars are cut off at the intersection of lattice columns according to claim 1, characterized in that: The two steel components constituting the prefabricated steel plate component (1) are relatively externally inserted onto the lattice column (5) on both sides of the lattice column (5) node in a direction perpendicular to the axial direction of the cut steel bar (3), and a steel bar and prefabricated steel plate welding seam (61) is formed between the cut steel bar (3) and the prefabricated steel plate component (1).

3. The reinforcement structure of a reinforced concrete member after the steel bars are cut off at the intersection of lattice columns according to claim 1, characterized in that: The two concave steel plates constituting the prefabricated steel plate component (1) are simultaneously welded with the cut steel bars (3) located on both sides of the prefabricated steel plate component (1).

4. The reinforcement structure of a reinforced concrete member after the steel bars are cut off at the intersection of lattice columns according to claim 1, characterized in that: The edge of the prefabricated steel plate component (1) does not protrude from the surface of the reinforced concrete structural component cast on the outside of the lattice column (5).

5. The reinforcement structure of a reinforced concrete member after the steel bars are cut off at the intersection of lattice columns according to claim 1, characterized in that: A welding seam (62) between the prefabricated steel plates is formed between two oppositely arranged concave steel plates constituting the prefabricated steel plate component (1).

6. The reinforcement structure of a reinforced concrete member after the steel bars are cut off at the intersection of lattice columns according to claim 1, characterized in that: A welding seam (63) between the prefabricated steel plate component (1) and the lattice column (5) is formed between the prefabricated steel plate component (1) and the lattice column (5).

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