Device for reinforcing reinforced concrete column through UHPC prefabricated shell
By adopting the connection method of pre-embedded steel plates and steel pipes inside the UHPC precast shell, the problems of complex construction and poor durability of UHPC precast shell reinforced reinforced concrete columns are solved, achieving the effects of simplified construction, reduced costs and improved bonding performance.
Patent Information
- Application Number
- CN202423098220.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-16
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2034-12-16
AI Technical Summary
The existing UHPC precast shells for reinforcing reinforced concrete columns involve complex, time-consuming, and labor-intensive construction steps, as well as poor durability and high maintenance costs. How can we achieve an economical, fast, and efficient reinforcement solution?
UHPC precast shells No. 1 and No. 2 are used, with steel plates and steel pipes pre-embedded inside. They are connected by steel pipe slots, which simplifies the construction process. UHPC is poured during the reinforcement process to enhance the bonding performance.
It simplifies the construction process, reduces labor costs and construction time, decreases reinforcement costs, improves bonding performance, and reduces subsequent maintenance costs.
Smart Images
Figure CN223853902U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to reinforced concrete column reinforcement engineering technical field, specifically a kind of UHPC prefabricated shell reinforced concrete column's device. BACKGROUND
[0002] With the aging of infrastructure, especially those designed and built according to old specifications reinforced concrete columns, its health condition is crucial to the safety and service life of the overall structure. These existing structures may be degraded in seismic performance, or even have safety hazards due to material aging, environmental erosion, load changes and other factors during long-term service. Traditional reinforcement methods, such as sticking steel plate, increasing section method, sticking fiber reinforced composite material, etc., although can improve the bearing capacity of the structure to a certain extent, but often have problems such as complex construction, long construction period, insufficient long-term durability, etc. For example, the outer steel plate is easy to further fail in the corrosion environment; and the adhesive used for sticking fiber reinforced composite material is easy to fail at high temperature.
[0003] Ultra-high performance concrete (UHPC) is considered a very promising repair and reinforcement material due to its excellent durability, ultra-high mechanical properties and good bonding performance. The unique material properties of UHPC, such as extremely fine pore structure and high density of fiber reinforcement, make it exhibit superior performance to traditional materials in reinforcement applications. The use of UHPC prefabricated shell provides a new idea for reinforcing existing reinforced concrete columns. It can be prefabricated in the factory to reduce the complexity of on-site construction, improve the quality of the bonding interface through precise design and manufacturing, and provide more reliable stress performance and durability.
[0004] However, in the reinforcement engineering of UHPC prefabricated shell for existing reinforced concrete columns, the existing reinforcement method has complex construction steps, consumes time and effort, and has poor durability, high maintenance cost in later period, how to ensure the effective combination between it and the original structure, the connection between prefabricated shells, and how to design an economical, fast and efficient reinforcement scheme are the key technical problems to be solved at present. INVENTION CONTENTS
[0005] The utility model aims at providing a kind of UHPC prefabricated shell reinforced concrete column's device to solve the problems raised in the above background technology.
[0006] The technical scheme adopted by the utility model is as follows:
[0007] A kind of UHPC prefabricated shell reinforced concrete column's device, comprising:
[0008] A UHPC prefabricated shell, a steel plate is embedded therein, and a steel pipe is connected to both ends of the steel plate.
[0009] The second UHPC prefabricated shell is provided with a second steel pipe at each of the left and right ends, and the two second steel pipes are connected through a second steel plate.
[0010] Preferably, the second UHPC prefabricated shell is provided with a slot at each of the front ends, and the slot extends into the second steel pipe.
[0011] Preferably, the first UHPC prefabricated shell and the second UHPC prefabricated shell are both symmetrically provided with two, and the two first UHPC prefabricated shells and the two second UHPC prefabricated shells are sequentially connected at the head and tail and are sleeved outside the reinforced concrete column.
[0012] Preferably, the first steel pipe at each end of the first UHPC prefabricated shell is slidably arranged in the second steel pipe in the corresponding second UHPC prefabricated shell, and the connection part of the first steel plate slides through the corresponding slot.
[0013] Preferably, the first UHPC prefabricated shell and the second UHPC prefabricated shell are both provided with a tacky groove near the side of the reinforced concrete column.
[0014] Preferably, in the reinforcing process, the concrete in the plastic hinge zone of the reinforced concrete column is chiseled inward to a certain depth, then the first UHPC prefabricated shell and the second UHPC prefabricated shell are connected, and after being surrounded, UHPC is poured.
[0015] As described above, due to the adoption of the above technical scheme, the beneficial effects of the present application are:
[0016] In the present application, the device has a simple structure and is easy to install, which can not only simplify the construction process, reduce labor costs and construction period, but also does not need to use wooden formwork in the reinforcing process, thereby reducing the reinforcing cost and the maintenance cost in the later period. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 Fig. 1 is a connection structure diagram of the first UHPC prefabricated shell and the second UHPC prefabricated shell of the present application;
[0018] Figure 2 Fig. 2 is a structure diagram of the first UHPC prefabricated shell of the present application;
[0019] Figure 3 Fig. 3 is a structure diagram of the second UHPC prefabricated shell of the present application;
[0020] Figure 4 Fig. 4 is a reinforcing process diagram of the present application; Figure 1 Fig. 5 is a reinforcing process diagram of the present application;
[0021] Figure 5 Fig. 4 is a reinforcing process diagram of the present application; Figure 2 Fig. 5 is a reinforcing process diagram of the present application;
[0022] Figure 6 Schematic diagram of the reinforcing process of the utility model Figure 3 ;
[0023] In the figure: 1, a steel pipe; 2, a steel plate; 3, a first UHPC prefabricated shell; 4, a tack-welding groove; 5, a second steel pipe; 6, a second steel plate; 7, a second UHPC prefabricated shell; 8, a reinforced concrete column. DETAILED DESCRIPTION
[0024] The specific embodiments of the utility model are described in detail below.
[0025] The "range" disclosed by the utility model is limited in the form of lower limit and upper limit, and the given range is limited by selecting a lower limit and an upper limit. The selected lower limit and upper limit define the boundaries of the specific range. The range defined in this way can include or not include the end value, and can be arbitrarily combined, that is, any lower limit can be combined with any upper limit to form a range. For example, if a range of 10-50 is listed for a specific parameter, it is understood that the ranges of 10-40 and 20-50 are also expected. In addition, if the minimum range values 1 and 2 are listed, and if the maximum range values 3, 4 and 5 are listed, the following ranges can all be expected: 1-3, 1-4, 1-5, 2-3, 2-4 and 2-5. In this application, unless otherwise stated, the range of values "a-b" represents a shorthand representation of any real number combination between a and b, where a and b are real numbers. For example, the value range "0-5" means that all real numbers between "0-5" have been listed in this document, and "0-5" is only a shorthand representation of these value combinations.
[0026] Unless otherwise specified, all embodiments and optional embodiments of the present application can be combined with each other to form new technical solutions.
[0027] Unless otherwise specified, all technical features and optional technical features of the present application can be combined with each other to form new technical solutions.
[0028] Unless otherwise specified, all steps of the present application can be performed in sequence or randomly, and the preferred sequence is in sequence. For example, the method comprises steps (a) and (b), which means that the method can comprise steps (a) and (b) in sequence, or steps (b) and (a) in sequence. For example, the method also comprises step (c), which means that step (c) can be added to the method in any order, for example, the method can comprise steps (a), (b) and (c), or steps (a), (c) and (b), or steps (c), (a) and (b), etc.
[0029] If there is no special indication, the "including" and "containing" mentioned in the application means open, and can also be closed. For example, the "including" and "containing" can mean that other components not listed can also be included or contained, or only the listed components can be included or contained.
[0030] If there is no special indication, the reaction is carried out under normal temperature and pressure conditions.
[0031] If there is no special indication, all parts or percentages are weight parts or weight percentages.
[0032] In the utility model, the used substances are all known substances, which can be purchased or synthesized by known methods.
[0033] In the utility model, the used devices or equipment are all conventional devices or equipment known in the field, which can be purchased.
[0034] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described here are only used to explain the utility model, and are not used to limit the utility model.
[0035] Embodiment:
[0036] A device for reinforcing a reinforced concrete column with a UHPC prefabricated shell, as shown in the figure, comprising: Figures 1-6
[0037] A first UHPC prefabricated shell 3, which is pre-buried with a first steel plate 2, and the two ends of the first steel plate 2 are connected with a first steel pipe 1;
[0038] A second UHPC prefabricated shell 7, which is pre-buried with a second steel pipe 5 at both ends, and the two second steel pipes 5 are connected through a second steel plate 6.
[0039] In a possible implementation, the two ends of the second UHPC prefabricated shell 7 are provided with a slot, and the slot extends into the second steel pipe 5.
[0040] In a possible implementation, the first UHPC prefabricated shell 3 and the second UHPC prefabricated shell 7 are both symmetrically provided with two, and the two first UHPC prefabricated shells 3 and the two second UHPC prefabricated shells 7 are sequentially connected end to end and sleeved outside the reinforced concrete column 8.
[0041] In a possible implementation, the first steel pipe 1 at both ends of the first UHPC prefabricated shell 3 is slidingly arranged in the second steel pipe 5 in the corresponding second UHPC prefabricated shell 7, and the connection part between the first steel pipe 1 and the first steel plate 2 slidingly passes through the corresponding slot.
[0042] In a possible implementation, the first UHPC prefabricated shell 3 and the second UHPC prefabricated shell 7 are provided with adhesion grooves 4 near one side of the reinforced concrete column 8.
[0043] In a possible implementation, in the reinforcing process, the plastic hinge zone concrete of the reinforced concrete column 8 is chiseled inward to a certain depth, then the first UHPC prefabricated shell 3 and the second UHPC prefabricated shell 7 are connected, and after being formed into a ring, UHPC is poured.
[0044] In a possible implementation, the adhesion performance between the UHPC prefabricated shell and the reinforced concrete column 8 is increased by adding pins and the like in the first UHPC prefabricated shell 3 and the second UHPC prefabricated shell 7.
[0045] By adopting the above technical scheme:
[0046] As shown in Figure 2 , the first steel pipe 1 and the first steel plate 2 are welded and connected, are pre-buried in the first UHPC prefabricated shell 3 after being welded in advance, and the adhesion grooves 4 are reserved on the surface of the UHPC shell in order to increase the adhesion performance between the first UHPC prefabricated shell 3 and the reinforced concrete column 8.
[0047] As shown in Figure 3 , the second UHPC prefabricated shell 7, the second steel pipe 5 and the second steel plate 6 are welded and connected, are pre-buried in the second UHPC prefabricated shell 7 after being welded in advance, and the first UHPC prefabricated shell 3 and the second UHPC prefabricated shell 7 are connected through the first steel pipe 1 and the second steel pipe 5, that is, the second steel pipe 5 with a smaller diameter is inserted into the first steel pipe 1 with a larger diameter, wherein the first steel pipe 1 is a steel pipe with an opening on one side, and the first steel plate 2 is a complete steel pipe.
[0048] As shown in Figures 4-6 , it is a reinforcing process schematic diagram, the plastic hinge zone concrete of the reinforced concrete column 8 is chiseled inward to a certain depth, then the first UHPC prefabricated shell 3 and the second UHPC prefabricated shell 7 are connected, and after being formed into a ring, UHPC is poured.
[0049] The above is only a preferred embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A device for reinforcing a reinforced concrete column with a UHPC prefabricated shell, characterized in that, The utility model relates to a kind of reinforced concrete column, including: No. UHPC prefabricated shell (3), it is embedded with No. steel plate (2) inside, No. steel plate (2) both ends are connected with No. steel pipe (1); No. 2 UHPC prefabricated shell (7), both ends are embedded with No. 2 steel pipe (5), two No. 2 steel pipe (5) are connected by No. 2 steel plate (6).
2. A device for reinforcing a reinforced concrete column with a UHPC prefabricated shell according to claim 1, characterized in that: The front of both ends of the No. 2 UHPC prefabricated shell (7) is provided with a slot, and the slot extends into the No. 2 steel pipe (5).
3. A device for reinforcing a reinforced concrete column with a UHPC prefabricated shell according to claim 2, characterized in that: The No. UHPC prefabricated shell (3) and No. 2 UHPC prefabricated shell (7) are both symmetrically provided with two, and the two No. UHPC prefabricated shells (3) and the two No. 2 UHPC prefabricated shells (7) are sequentially connected end to end and sleeved outside the reinforced concrete column (8).
4. A device for reinforcing a reinforced concrete column with a UHPC prefabricated shell according to claim 3, characterized in that: The No. steel pipe (1) at both ends of the No. UHPC prefabricated shell (3) is slidingly arranged in the No. 2 steel pipe (5) in the corresponding No. 2 UHPC prefabricated shell (7), and the connection part of the No. steel pipe (1) and the No. steel plate (2) slidingly passes through the corresponding slot.
5. A device for reinforcing a reinforced concrete column with a UHPC prefabricated shell according to claim 3, characterized in that: The No. UHPC prefabricated shell (3) and the No. 2 UHPC prefabricated shell (7) are both provided with an adhesion-increasing groove (4) on the side close to the reinforced concrete column (8).