Anti-seismic construction method for beam-column joint of concrete structure

Abstract

The invention discloses a concrete structure beam-column joint anti-seismic construction method which comprises the steps that an analysis model is established, and the analysis model is used for optimizing actual construction measures; carrying out finite element analysis simulation, and carrying out structure checking calculation on the analysis model; the structure drawing is used for drawing the model established by the analysis model establishment and finite element analysis simulation, and providing material parameter selection; experimental research: performing research according to drawings in the structural drawing; according to the method, the economical efficiency of concrete and steel bar material selection and the reasonability of steel bar arrangement at complex nodes such as beam columns and the like can be effectively improved, a large amount of investment of materials such as steel bars and steel bar supports is saved, meanwhile, the construction precision is higher, rework waste is avoided, and the method is worthy of popularization and application. The construction difficulty at the joint is reduced, the construction quality and safety are effectively improved, and the cost is reduced, so that the construction quality and safety are effectively improved, and the requirements of shortening the construction period and controlling the cost are met.

Description

Technical Field

[0001] The present invention relates to the technical field of beam-column construction of concrete structures, and more specifically, to an earthquake-resistant construction method at the beam-column joints of concrete structures. Background Art

[0002] In architectural design, beam-columns generally refer to the vertical columns and load-bearing crossbeams of a building. The main functions of beam-columns are to bear the weight of the upper structure (such as floor slabs and roofs) and transfer it to the foundation. Beam-columns are generally made of materials such as concrete, reinforced concrete, and steel, and have strong bearing capacity and stability.

[0003] For the seismic design and construction of concrete structures, the conventional methods adopted in the domestic industry are: simply increasing the steel content and steel lap joints, which have problems such as increasing the structural self-weight, being difficult to construct at nodes with too much steel, and uncontrollable costs. Summary of the Invention

[0004] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide an earthquake-resistant construction method at the beam-column joints of concrete structures.

[0005] The present invention adopts the following technical solutions:

[0006] An earthquake-resistant construction method at the beam-column joints of concrete structures, comprising:

[0007] Establishing an analysis model, which is used to optimize actual construction measures;

[0008] Finite element analysis simulation, performing structural checking calculations on the analysis model;

[0009] Structural drawing, which is used to draw the models established by establishing the analysis model and finite element analysis simulation, and give the selection of material parameters;

[0010] Experimental research, conducting research according to the drawings in the structural drawing;

[0011] Field practice, systematically planning and practicing the structural mechanics analysis and experimental research.

[0012] Further, the established analysis model selects a BIM model.

[0013] Further, the established analysis model includes the steel bars of the concrete structure, the material parameters of concrete, the steel bar structure at important nodes, and the concrete pouring construction technology.

[0014] Furthermore, the concrete material parameters include: concrete serial mix ratio and yield strength detection of steel bars. Among them, the concrete serial mix ratio is used to ensure the strength, durability and workability of concrete, and the yield strength detection of steel bars is used to test the tensile critical value of elastic deformation and plastic deformation of steel.

[0015] Furthermore, the finite element analysis simulation is used to check the formulated design scheme. After passing the check, relevant tests are carried out on the project for verification.

[0016] Furthermore, the experimental research includes: during the project test, process data is recorded in real time, and problems found in the test or those contrary to the theory are further discussed and analyzed. Through the method of re-testing and re-verifying, the test is terminated until the research results reach the expected effect.

[0017] Furthermore, the experimental research also includes: reasonably optimizing the stressed steel bars and stirrups existing at the joints in space.

[0018] Furthermore, the on-site practice includes: adopting the method of combining theory with practice, strictly following the requirements of the specifications for each process, recording the problems occurring during the process and analyzing and adjusting them in a timely manner. During the entire process flow, data statistics and collation and image data collection should be carried out in a timely manner. Summary evaluation should be carried out after the implementation is completed, and at the same time, the data should be summarized and refined to form the final research results.

[0019] Beneficial effects

[0020] 1. The present invention effectively improves the economy of concrete and steel bar material selection and the rationality of steel bar arrangement at complex joints such as beams and columns, saves a large amount of material inputs such as steel bars and steel bar supports, and at the same time has higher construction precision, avoids rework waste, reduces the construction difficulty at the joints, effectively improves the construction quality and safety, and reduces costs, thereby effectively improving the construction quality and safety and meeting the requirements of shortening the construction period and controlling costs.

[0021] 2. The present invention uses BIM and finite element analysis to study the construction technology of earthquake resistance of concrete structures, proposes a reasonable design scheme to guide on-site construction, and solves the problems of heavy self-weight, material waste and unreasonable steel bar arrangement at joints such as beams and columns in traditional schemes, resulting in low construction efficiency.

[0022] 3. The present invention completes the drawing of concrete structures through BIM technology, meets the requirements of guiding on-site construction, and forms steel bar construction measures drawings and pouring construction processes for key joints such as beams and columns. Description of the drawings

[0023] Figure 1 is the work flow chart of the present invention;

[0024] Figure 2It is the workflow diagram for establishing the analysis model in the present invention;

[0025] Figure 3 It is the workflow diagram for finite element analysis simulation in the present invention;

[0026] Figure 4 It is the workflow diagram for experimental research in the present invention;

[0027] Figure 5 It is the workflow diagram for on-site practice in the present invention. Detailed implementation manners

[0028] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0029] As shown in the figure, the present invention discloses an anti-seismic construction method at the beam-column joints of a concrete structure, including:

[0030] Establishing an analysis model, which is used to optimize the actual construction measures to ensure reasonable spatial overlap and improve construction efficiency;

[0031] Performing finite element analysis simulation to perform structural checking on the analysis model;

[0032] Structural drawing, which is used to draw the models established by establishing the analysis model and performing finite element analysis simulation, and give reasonable material parameter selection;

[0033] Conducting experimental research according to the drawings in the structural drawing;

[0034] Performing on-site practice to systematically plan and practice the structural mechanics analysis and experimental research.

[0035] In an embodiment of the present invention, the BIM model is selected for establishing the analysis model. The BIM model has visualization. The visualization results can not only be presented by renderings and reports, but more importantly, communication, discussion, and decision-making during the project design, construction, and operation processes are carried out in a visualized state; coordination, which can coordinate the collision problems of each specialty in the early stage of building construction, generate coordination data, and provide it; simulation, in the design stage, BIM can conduct simulation experiments on some things that need to be simulated in the design. In the bidding and construction stages, 4D simulation (three-dimensional model plus the development time of the project) can be carried out. That is, according to the construction organization design, the actual construction is simulated to determine a reasonable construction plan to guide the construction. At the same time, 5D simulation (based on the 4D model plus cost control) can also be carried out to achieve cost control; in the later operation stage, the handling methods of daily emergencies can be simulated; optimization, the BIM model provides the actual existing information of the building, including geometric information, physical information, and rule information, and also provides the actual existing information after the building changes. When the complexity is relatively high, the capabilities of the participants themselves cannot master all the information, and certain scientific and technological means and equipment must be relied on. The complexity of modern buildings mostly exceeds the ability limits of the participants themselves. BIM and various optimization tools supporting it provide the possibility of optimizing complex projects.

[0036] In an embodiment of the present invention, the establishment of the analysis model includes the steel bars of the concrete structure, the concrete material parameters, the steel bar structure of important nodes, and the concrete pouring construction technology. The selection of the steel bars of the concrete structure can meet the use strength in different scenarios, can save a large amount of material inputs such as steel bars and steel bar supports, and at the same time has higher construction accuracy, avoids rework waste, reduces the construction difficulty at the nodes, effectively improves the construction quality and safety, and reduces costs. The collection of the concrete material parameters can reasonably calculate the required parameters. The steel bar structure of important nodes can ensure the concrete pouring quality. The concrete pouring construction technology is used to meet the construction requirements in different scenarios and has strong pertinence.

[0037] In an embodiment of the present invention, the concrete material parameters include: the concrete mix ratio number and the steel bar yield strength detection. Among them, the concrete mix ratio number is used to ensure the strength, durability, and workability of the concrete, and the steel bar yield strength detection is used to test the tensile critical value of the elastic deformation and plastic deformation of the steel.

[0038] In an embodiment of the present invention, the finite element analysis simulation is used to check the formulated design plan, and after passing the check, relevant tests are carried out on the project for verification.

[0039] In an embodiment of the present invention, the experimental research includes: during the project test, process data is recorded in real time, and problems found in the test or those contrary to the theory are further discussed and analyzed. Through repeated tests and demonstrations, the test is terminated until the research results reach the expected effect.

[0040] In an embodiment of the present invention, the experimental research further includes: reasonably optimizing the stressed steel bars and stirrups existing at the nodes in space.

[0041] In an embodiment of the present invention, the on-site practice includes: adopting a combination of theory and practice, strictly following the requirements of the specifications for each process, recording the problems occurring during the process and analyzing and adjusting them in a timely manner. During the entire process flow, data statistics and collation and image data collection should be carried out in a timely manner. Summary evaluation should be carried out after the implementation is completed, and at the same time, the materials should be summarized and refined to form the final results of the project.

[0042] The working principle and usage process of the present invention are as follows:

[0043] S1. Establish an analysis model, which can optimize the actual construction measures, ensure reasonable spatial lap joint to improve construction efficiency. Establishing the analysis model includes: the steel bars of the concrete structure, the concrete material parameters, the steel bar structure of important nodes, and the concrete pouring construction technology. The selection of the steel bars of the concrete structure can meet the use strength in different scenarios. The collection of the concrete material parameters can reasonably calculate the required parameters. The concrete material parameters include: the concrete mix ratio number and the steel bar yield strength detection. Among them, the concrete mix ratio number is used to ensure the strength, durability, and workability of the concrete, and the steel bar yield strength detection is used to test the tensile critical value of the elastic deformation and plastic deformation of the steel. The steel bar structure of important nodes can ensure the quality of concrete pouring, and the concrete pouring construction technology is used to meet the construction requirements in different scenarios, with strong pertinence.

[0044] S2. Finite element analysis simulation, which is used to check the formulated design scheme. After passing the check, relevant tests are carried out on the project for verification;

[0045] S3. Structure drawing, which is used to draw the drawings of the models established by the analysis model and the finite element analysis simulation, and give reasonable selection of material parameters.

[0046] S4. Experimental research, which is carried out according to the drawings in the structure drawing; during the project test, process data is recorded in real time, and problems found in the test or those contrary to the theory are further discussed and analyzed. Through repeated tests and demonstrations, the test is terminated until the research results reach the expected effect; the stressed steel bars, stirrups, etc. existing at the nodes are reasonably optimized in space to meet the requirements of both economic indicators and overall construction quality.

[0047] S5. On-site practice. Adopt the method of combining theory with practice. Each process should be strictly in accordance with the specified requirements. Record the problems that occur during the process, analyze them in a timely manner and make adjustments. During the entire process flow, data statistics and collation as well as image data collection should be carried out in a timely manner. Summary evaluation should be carried out after the implementation is completed. At the same time, summarize and refine the materials to form the final research results.

[0048] As described above, it is only the preferred specific implementation manner of the present invention; however, the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its improved concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. An anti-seismic construction method at the beam-column joints of a concrete structure, characterized in that: Including: Establish an analysis model, which is used to optimize actual construction measures; Finite element analysis simulation to perform structural checking on the analysis model; Structure drawing, which is used to draw the model established by establishing the analysis model and finite element analysis simulation, and give the selection of material parameters; Experimental research, which is carried out according to the drawings in the structure drawing; Field practice, which systematically plans and practices structural mechanics analysis and experimental research.

2. The seismic construction method at the beam-column joint of a concrete structure according to claim 1, characterized in that: The established analysis model selects a BIM model.

3. A seismic construction method at the beam-column joint of a concrete structure according to claim 1, characterized in that: The established analysis model includes the steel bars of the concrete structure, the material parameters of the concrete, the steel bar structure of important nodes, and the concrete pouring construction technology.

4. A seismic construction method for the beam-column joints of a concrete structure according to claim 3, characterized in that: The concrete material parameters include: the mix ratio of concrete numbers and the detection of the yield strength of steel bars. Among them, the mix ratio of concrete numbers is used to ensure the strength, durability and workability of the concrete, and the detection of the yield strength of steel bars is used to test the tensile critical value of the elastic deformation and plastic deformation of the steel.

5. A seismic construction method at the beam-column joint of a concrete structure according to claim 1, characterized in that: The finite element analysis simulation is used to check the formulated design scheme, and relevant tests are carried out on the project for verification after passing the check.

6. The seismic construction method at the beam-column joint of a concrete structure according to claim 5, characterized in that: The experimental research includes: during the project test, record the process data in real time, conduct further discussion and analysis on the problems found in the test or those contrary to the theory, and terminate the test until the research results reach the expected effect through the method of re-testing and re-verification.

7. A seismic construction method at the beam-column joints of a concrete structure according to claim 1, characterized in that: The experimental research also includes: reasonably optimizing the stressed steel bars and stirrups existing at the nodes in space.

8. A seismic construction method at the beam-column joints of a concrete structure according to claim 7, characterized in that: The field practice includes: adopting the method of combining theory with practice, strictly following the requirements of the specifications for each process, recording the problems that occur during the process and analyzing and adjusting them in a timely manner. During the entire process flow, data statistics and collation and image data collection should be carried out in a timely manner. A summary evaluation should be carried out after the implementation is completed, and at the same time, the data should be summarized and refined to form the final research results.

Images