Reinforcing and transforming process for building frame structure

Abstract

The invention relates to the technical field of building reconstruction, and discloses a building frame structure reinforcement and reconstruction process which comprises the following steps: S1, data collection; s2, performing field evaluation; s3, designing a scheme; S4, comparing the scheme; s5, reinforcing construction is conducted; s6, detecting the structure; s7, intelligent monitoring; through three-dimensional laser scanning and simulation analysis, an accurate model of the building and detailed analysis of structural performance are obtained, and a designer is helped to compare advantages and disadvantages of different reinforcement schemes through analysis, so that the most effective reinforcement method is selected; and finally, the scheme with the highest cost benefit is selected through comparative analysis, and reinforcing materials and construction cost are saved. Through the intelligent monitoring system, the health condition of the building can be monitored in real time, the structural problem can be found in time, the system can set an early warning threshold value, once abnormal data is monitored, an alarm is given out immediately, decision support is provided for management personnel, and the safety management level of the building can be remarkably improved through real-time monitoring and early warning.

Description

Technical Field

[0001] The invention relates to the technical field of building reconstruction, in particular to a process for reinforcing and reconstructing a building frame structure. Background Art

[0002] As a common structural form, the stability and safety of building frame structures are crucial to the overall performance of buildings. However, due to the influence of various factors such as design, construction, and use, some building frame structures may experience problems such as insufficient bearing capacity, excessive deformation, and cracks during use, seriously threatening the safety and service life of the buildings.

[0003] The renovation of old buildings generally refers to a collection of buildings that have certain value but most of which have lost their use functions. In a sense, they still have certain historical value and contemporary significance. Renovating them also respects history and protects the buildings to a certain extent. In view of the currently more widespread green building theory, it can also more fully guarantee the utilization and conservation of resources.

[0004] A Chinese patent discloses a process for reinforcing and renovating the internal frame structure of a brick-concrete building (authorization announcement number CN116411728B). This patented technology takes an overall approach to reinforcing the unstable original structure. Targeted repairs are taken for each part of the building, such as the foundation, some frame columns, beams, and floor slabs. This can revitalize old buildings and effectively improve the overall structural safety of the building. This not only ensures that the building as a whole meets the bearing capacity requirements, thereby ensuring that the seismic and compression calculations of the load-bearing walls meet the calculated bearing capacity requirements, but also reduces the structural system chaos in the original structural force system, making the force transmission path relatively clear, improving the structural safety rating, and ensuring that the renovated building meets the current basic building requirements. However, it has certain drawbacks: it lacks sufficient data support, leading to the selection of inappropriate reinforcement schemes and increasing the risk of reinforcement failure; and this insufficient comparison will lead to inaccurate judgments on potential problems of the building, requiring subsequent secondary reinforcement; secondly, it is impossible to monitor the reinforced structure in real time. After the construction is completed, the health status of the building cannot be grasped in real time and minor deformations or damage cannot be discovered in time. Structural problems may not be discovered until they are serious, which will lead to larger-scale safety hazards, affect safety of use, and increase the difficulty of managing potential risks. Summary of the Invention

[0005] The purpose of the present invention is to provide a building frame structure reinforcement and reconstruction process to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: A building frame structure reinforcement and reconstruction process comprises the following steps: S1. Data collection: S101. Collect the initial design drawings of the building; S102. Check the construction records to understand whether there are any quality problems or changes during the construction process; S103. Review the building history, including changes in usage and function S2. On-site assessment: S201. Conduct on-site inspections of buildings, including exterior and interior structural inspections, to understand their component forms, material properties, damage conditions, and operating environment; S202. Conduct non-destructive testing on the structural components of the building; S203. Based on the test results, a calculation model of the structure is established using structural analysis software, and parameters such as structural dimensions and material strength obtained from actual testing are input into the model; and the load-bearing capacity, stability, and other performance of the structure are evaluated in accordance with current structural design specifications; S204. Organize the survey, testing and assessment results into a report to provide a basis for the subsequent reinforcement and renovation plan design; S3. Solution design: S301. Based on the assessment report, clarify the purpose of the reinforcement and renovation; S302. Select an appropriate reinforcement method based on the actual conditions of the building and the reinforcement objectives; S303. Carry out detailed calculations on the reinforcement scheme to ensure that the reinforced structure meets the regulatory requirements; S304. Draw construction drawings according to the reinforcement plan; S305. Develop a construction organization design to clarify the construction sequence, construction methods, quality requirements and safety measures; S306. Organize relevant technical personnel to review the reinforcement design plan to ensure the scientificity, rationality and feasibility of the plan.

[0007] S4. Comparison of solutions: S401. Use 3D laser scanning technology to comprehensively scan the interior and exterior of the building to obtain high-precision point cloud data; S402. Import the point cloud data into professional 3D modeling software to construct an accurate 3D model of the building; S403. Based on the three-dimensional model, use structural analysis software to perform simulation analysis; S404. Based on the simulation results, evaluate the load-bearing capacity and potential risk points of the existing structure to provide a scientific basis for the reinforcement and renovation plan. By comparing the simulation results of different reinforcement plans, select the optimal plan to ensure the maximum reinforcement effect and economic benefits. S5. Reinforcement construction: S501. Obtain construction permits, build temporary construction facilities, purchase reinforcement materials, and organize construction personnel; S502. Conduct technical briefings for construction personnel, clarify construction techniques, quality standards, and safety requirements, strengthen construction site management, ensure construction order, supervise construction quality, and ensure construction safety; S503. Carry out on-site construction according to the construction plan; S6. Structural inspection: Test the reinforced structure, compare the test results before and after reinforcement, evaluate the reinforcement effect, and then test the bonding quality of the reinforced parts; S7, intelligent monitoring: Select appropriate sensors based on the structure type and expected monitoring indicators, and install sensors at key locations of the structure to ensure that the stress and deformation status of the structure can be fully reflected. Utilize wireless transmission technology to connect the sensors to the central data processing unit to establish a real-time monitoring network to achieve real-time monitoring of the building's health status. Set early warning thresholds in the monitoring system. Once abnormal data is detected, the system will automatically issue an alarm to notify management personnel to take appropriate measures.

[0008] As a further solution of the present invention: the initial design drawings of the building in S101 include drawings of the structure, water supply and drainage, and electrical engineering of the building.

[0009] As a further solution of the present invention: the objectives of the non-destructive testing in S202 include the detection of concrete strength, steel bar corrosion status and crack width.

[0010] As a further solution of the present invention: the non-destructive testing technology includes ultrasonic testing, radar testing and rebound testing.

[0011] As a further solution of the present invention: the structural analysis software in S203 includes PKPM and ETABS.

[0012] As a further solution of the present invention: the purpose of the transformation in S301 includes increasing the bearing capacity, improving the seismic performance and repairing the damaged parts; the transformation methods in S302 include increasing the cross-section method, sticking carbon fiber cloth method and external steel method; the reinforcement method calculated in detail in S303 includes the bearing capacity, stiffness and stability of the reinforced components; the construction drawings in S304 include the size, material and construction process of the reinforced components.

[0013] As a further solution of the present invention: the three-dimensional modeling software in S402 includes Autodesk Revit and Bentley Systems; the structural analysis software in S403 includes ANSYS or SAP2000; the simulation analysis in S403 includes static analysis, dynamic analysis, stability analysis and seismic performance analysis.

[0014] As a further solution of the present invention: the on-site construction content in S503 includes external steel reinforcement, cross-section enlargement method, FRP reinforcement and prestressed reinforcement.

[0015] As a further solution of the present invention: the sensor in S7 includes a strain gauge, an accelerometer and a displacement sensor.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention uses 3D laser scanning and simulation analysis to obtain a precise model of the building and a detailed analysis of its structural performance. This is more accurate than traditional measurement and analysis methods. This analysis helps designers compare the pros and cons of different reinforcement schemes, thereby selecting the most effective reinforcement method, optimizing the design, and reducing unnecessary reinforcement measures. Finally, through comparative analysis, the most cost-effective solution is selected, saving reinforcement materials and construction costs.

[0017] 2. The present invention can monitor the health status of buildings in real time through the intelligent monitoring system and detect structural problems in a timely manner. The system can set early warning thresholds. Once abnormal data is detected, an alarm will be issued immediately to provide decision support for managers. Through real-time monitoring and early warning, the safety management level of buildings can be significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a flow chart of a building frame structure reinforcement and reconstruction process; DETAILED DESCRIPTION

[0019] See also Figure 1 In an embodiment of the present invention, a building frame structure reinforcement and reconstruction process includes the following steps: S1. Data collection: S101. Collect the building's initial design drawings, including drawings of the building's structure, water supply and drainage, and electrical systems. These drawings can provide basic information such as the building's initial layout, structural form, structural dimensions, and material strength. For example, the structural drawings can determine the cross-sectional dimensions of frame columns and beams, reinforcement conditions, and the design strength grade of concrete. S102. Check the construction records to understand whether there are any quality problems or changes during the construction process, such as whether there are any records of loose concrete during pouring, or whether there are any design changes to the component structure during the construction process; S103. Check the building history, including changes in usage, for example, whether a building that was originally residential has been converted to commercial use, which will affect the load on the components.

[0020] S2. On-site assessment: S201. Conduct on-site inspections of buildings, including exterior and interior structural inspections, to understand their component forms, material properties, damage conditions, and operating environment; S202. Conduct ultrasonic testing, radar testing, and rebound hammer non-destructive testing on building components. The non-destructive testing targets include concrete strength, steel bar corrosion, and crack width. S203. Based on the test results, a calculation model of the structure is established using structural analysis software including PKPM and ETABS. The parameters such as structural dimensions and material strength obtained from the actual test are input into the model. The bearing capacity, stability and other performance of the structure are evaluated in accordance with the current structural design specifications, such as the "Code for Design of Concrete Structures" GB 50010. For example, the internal forces of frame columns and beams under the existing loads are calculated and compared with the actual bearing capacity of the structure to determine whether the structure meets safety requirements. If there are safety hazards in the structure, its weak links are analyzed to provide a basis for subsequent reinforcement and renovation. S204. Organize the survey, testing and assessment results into a report to provide a basis for the subsequent reinforcement and renovation plan design; S3. Solution design: S301. Based on the assessment report, clarify the objectives of the reinforcement and renovation, including increasing bearing capacity, improving seismic performance, and repairing damaged areas; S302. Select appropriate reinforcement methods, including increasing the cross-section, attaching carbon fiber cloth, and encapsulating steel, based on the actual conditions of the building and the reinforcement objectives. S303. Carry out detailed calculations on the reinforcement scheme to ensure that the reinforced structure meets the regulatory requirements; S304. Based on the reinforcement plan, including the load-bearing capacity, stiffness, and stability of the reinforced components, draw construction drawings including the dimensions, materials, and construction techniques of the reinforced components; S305. Develop a construction organization design to clarify the construction sequence, construction methods, quality requirements and safety measures; S306. Organize relevant technical personnel to review the reinforcement design plan to ensure the scientificity, rationality and feasibility of the plan.

[0021] S4. Comparison of solutions: S401. Utilize 3D laser scanning technologies, including Autodesk Revit and Bentley Systems, to comprehensively scan the interior and exterior of the building and obtain high-precision point cloud data. S402. Import the point cloud data into professional 3D modeling software to construct an accurate 3D model of the building; S403. Based on the three-dimensional model, use structural analysis software such as ANSYS or SAP2000 to perform simulation analysis including static analysis, dynamic analysis, stability analysis, and seismic performance analysis; S404. Based on the simulation results, evaluate the load-bearing capacity and potential risk points of the existing structure to provide a scientific basis for the reinforcement and renovation plan. By comparing the simulation results of different reinforcement plans, select the optimal plan to ensure the maximum reinforcement effect and economic benefits. S5. Reinforcement construction: S501. Obtain construction permits, build temporary construction facilities, purchase reinforcement materials, and organize construction personnel; S502. Conduct technical briefings for construction personnel, clarify construction techniques, quality standards, and safety requirements, strengthen construction site management, ensure construction order, supervise construction quality, and ensure construction safety; S503. Carry out on-site construction according to the construction plan; Including external steel reinforcement: cleaning the surface of the original component, treating rust, welding or bonding steel plates on the outside of the component to ensure a firm connection; Enlarging the cross-section method: Wrapping the original component with concrete or steel to ensure a good combination of the new material and the original material; FRP reinforcement: clean and treat the component surface, apply resin, and laminate composite materials as required; Prestressed reinforcement: Drill holes to install prestressed steel bars, and anchor them after applying prestress.

[0022] S6. Structural inspection: Test the reinforced structure, compare the test results before and after reinforcement, evaluate the reinforcement effect, and then test the bonding quality of the reinforced parts. For example, use a pull-out test to test the bonding strength between the carbon fiber cloth, steel plate and the original structure. For beams reinforced with carbon fiber cloth, stick a pull-out block on the carbon fiber cloth and use a pull-out tester to measure the bonding strength. S7, intelligent monitoring: Select appropriate sensors based on the structure type and expected monitoring indicators, and install sensors at key locations of the structure, including strain gauges, accelerometers, and displacement sensors, to ensure that the stress and deformation state of the structure can be fully reflected. Utilize wireless transmission technology to connect the sensors to the central data processing unit, establish a real-time monitoring network, and achieve real-time monitoring of the building's health status. Set early warning thresholds in the monitoring system. Once abnormal data is detected, the system will automatically issue an alarm to notify management personnel to take appropriate measures.

[0023] In order to further illustrate the technical effects of the present invention, the following cases are used for verification: A residential building built in the 1980s in a certain city has changed its use to office purposes. The original design load can no longer meet current needs, and some structures have cracks and concrete peeling, requiring reinforcement and renovation.

[0024] S1. Data Collection The project team collected the office building's initial design drawings, including structural, plumbing, and electrical diagrams. A review of construction records revealed that some concrete pours were not vibrated compactly, and there was a history of conversion to office use, providing crucial information for subsequent reinforcement.

[0025] S2. Field Assessment The team conducted an on-site investigation, inspecting the exterior and internal structure, and discovered multiple concrete cracks and corroded steel bars. Using ultrasonic waves and a rebound hammer for non-destructive testing, the team found insufficient concrete strength and severe corrosion of the steel bars. Subsequently, they used PKPM software to establish a calculation model to assess the structure's bearing capacity under the existing load.

[0026] S3. Solution Design According to the assessment report, the reinforcement goals included increasing the bearing capacity and improving the seismic performance. The cross-section enlargement method and the external steel cladding method were selected as the reinforcement methods. Detailed calculations were carried out to ensure that the reinforcement plan met the design specifications, and finally the construction drawings were drawn up.

[0027] S4. Comparison of solutions The building was comprehensively scanned using 3D laser scanning technology to generate high-precision point cloud data, which was then imported into 3D modeling software. ANSYS software was used for simulation analysis to evaluate the bearing capacity of the existing structure. After comparing different reinforcement options, the outsourced steel reinforcement solution was ultimately selected to ensure optimal economic benefits and reinforcement effects.

[0028] S5. Reinforcement construction After obtaining the construction permit, the team organized the construction personnel to conduct technical briefings and clarify the construction process and quality standards. During the construction, the surface of the original components was cleaned, and after the rust was treated, the external steel reinforcement was carried out by welding and bonding steel plates.

[0029] S6. Structural inspection After the reinforcement construction was completed, a comprehensive structural inspection was carried out, including a comparison of the concrete strength and bonding quality before and after reinforcement to ensure that the reinforcement effect met expectations.

[0030] S7, intelligent monitoring Finally, strain gauges and displacement sensors were installed, and a real-time monitoring system was established to ensure that the health status of the structure can be reflected in a timely manner. Early warning thresholds were also set to facilitate dynamic monitoring by management personnel.

[0031] Through this series of steps, the office building successfully achieved structural reinforcement, improved safety and service life, and laid the foundation for subsequent use.

[0032] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0033] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A building frame structure reinforcement and reconstruction process, characterized in that: The following steps are involved: S1. Data collection: S101. Collect the initial design drawings of the building; S102. Check the construction records to find out whether there are any quality problems or changes during the construction process; S103. Review the building history, including changes in usage; S2. Field Assessment: S201. Conduct on-site inspection of buildings, including appearance inspection and internal structure inspection, to understand their component forms, material properties, damage conditions and usage environment; S202. Conduct non-destructive testing on the structural components of the building; S203. Based on the test results, a calculation model of the structure is established using structural analysis software, and parameters such as structural dimensions and material strength obtained from actual testing are input into the model; and the bearing capacity, stability and other performance of the structure are evaluated according to the current structural design specifications; S204. Organize the survey, testing and evaluation results into a report to provide a basis for the subsequent reinforcement and renovation plan design; S3. Solution design: S301. According to the assessment report, clarify the purpose of reinforcement and renovation; S302, selecting a suitable reinforcement method according to the actual situation of the building and the reinforcement target; S303. Carry out detailed calculations on the reinforcement scheme to ensure that the reinforced structure meets the requirements of the specifications; S304. Draw construction drawings according to the reinforcement plan; S305. Develop a construction organization design to clarify the construction sequence, construction methods, quality requirements and safety measures; S306. Organize relevant technical personnel to review the reinforcement design plan to ensure the scientificity, rationality and feasibility of the plan; S4. Comparison of solutions: S401. Use 3D laser scanning technology to comprehensively scan the interior and exterior of the building to obtain high-precision point cloud data; S402, importing the point cloud data into professional 3D modeling software to construct an accurate 3D model of the building; S403, based on the three-dimensional model, use structural analysis software to perform simulation analysis; S404. Based on the simulation results, evaluate the bearing capacity and potential risk points of the existing structure to provide a scientific basis for the reinforcement and reconstruction plan. By comparing the simulation results of different reinforcement plans, select the optimal plan to ensure the maximization of the reinforcement effect and economic benefits. S5. Reinforcement construction: S501. Apply for construction permit, build temporary construction facilities, purchase reinforcement materials, and organize construction personnel; S502. Provide technical explanations to construction personnel, clarify construction techniques, quality standards and safety requirements, strengthen construction site management, ensure construction order, supervise construction quality and ensure construction safety; S503, carry out on-site construction according to the construction plan; S6. Structural inspection: Test the reinforced structure, compare the test results before and after reinforcement, evaluate the reinforcement effect, and then test the bonding quality of the reinforced parts; S7, Intelligent Monitoring: Select appropriate sensors based on the structure type and expected monitoring indicators, and install sensors at key locations of the structure to ensure that the stress and deformation status of the structure can be fully reflected. Use wireless transmission technology to connect the sensors to the central data processing unit, establish a real-time monitoring network, and achieve real-time monitoring of the health status of the building. Set early warning thresholds in the monitoring system. Once abnormal data is detected, the system will automatically issue an alarm to notify management personnel to take corresponding measures.

2. A building frame structure reinforcement and reconstruction process according to claim 1, characterized in that: The initial design drawings of the building in S101 include drawings of the structure, water supply and drainage, and electrical engineering of the building.

3. A building frame structure reinforcement and reconstruction process according to claim 1, characterized in that: The objectives of the nondestructive testing in S202 include testing of concrete strength, steel bar corrosion status and crack width.

4. A building frame structure reinforcement and reconstruction process according to claim 1 or 3, characterized in that: The non-destructive testing technology includes ultrasonic testing, radar testing and rebound testing.

5. A building frame structure reinforcement and reconstruction process according to claim 1, characterized in that: The structural analysis software in S203 includes PKPM and ETABS.

6. A building frame structure reinforcement and reconstruction process according to claim 1, characterized in that: The transformation purposes in S301 include increasing the bearing capacity, improving the seismic performance and repairing the damaged parts; the transformation methods in S302 include increasing the cross-section method, pasting carbon fiber cloth method and external steel method; the reinforcement methods in S303 that are calculated in detail include the bearing capacity, stiffness and stability of the reinforced components; the construction drawings in S304 include the size, material and construction process of the reinforced components.

7. A building frame structure reinforcement and reconstruction process according to claim 1, characterized in that: The three-dimensional modeling software in S402 includes Autodesk Revit and Bentley Systems; The structural analysis software in S403 includes ANSYS or SAP2000; the simulation analysis in S403 includes static analysis, dynamic analysis, stability analysis and seismic performance analysis.

8. The building frame structure reinforcement and reconstruction process according to claim 1, characterized in that: The on-site construction content in S503 includes external steel reinforcement, increased section method, RP reinforcement and prestressed reinforcement.

9. The building frame structure reinforcement and reconstruction process according to claim 1, characterized in that: The sensors in S7 include strain gauges, accelerometers and displacement sensors.

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