Post-opening reinforcement method

Abstract

The invention discloses a post-holing reinforcement method. The post-holing reinforcement method comprises the following steps: analyzing and summarizing the material of a to-be-holed structure, the physical and mechanical properties of the to-be-holed structure, the load condition of the to-be-holed structure, the holing position and size and the residual strength of the holed structure one by one to form an evaluation report; designing a holing reinforcement scheme based on the evaluation report; construction materials and construction instruments are prepared in advance according to the holing reinforcement scheme, and a construction site is prepared; holing is conducted based on the holing reinforcement scheme; reinforcing the surrounding structure of the hole based on the holing reinforcing scheme; and the punching quality and the reinforcing quality are checked and accepted, and through the reinforcing method, the post-punching reinforcing quality is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and particularly to a method for reinforcing post-opening. Background Art

[0002] Post-opening reinforcement construction refers to performing a hole-opening operation on an existing building structure (such as concrete components, walls, etc.) according to new requirements or design changes, and performing necessary reinforcement treatment on the structure after the hole is opened to ensure the overall stability, load-bearing capacity, and safety of the structure;

[0003] There are many existing construction methods for post-opening reinforcement systems. Different reinforcement methods are applicable to different scenarios. Accurately selecting a reinforcement method is a complex decision-making process that requires comprehensive consideration of various factors. Due to the differences in factors such as the specific location, size, shape of the hole, and the characteristics of the surrounding structure, there is uncertainty in the reinforcement method for the hole-opening, and the reinforcement method cannot be accurately selected, reducing the reinforcement effect. Summary of the Invention

[0004] The purpose of the present invention is to overcome the defects of the prior art and provide a method for reinforcing post-opening. By evaluating the type and material of the structure to be opened, analyzing the physical and mechanical properties, load conditions, the influence of the opening position and size, and evaluating the remaining strength of the structure after the opening, a comprehensive analysis of the structure to be opened is carried out, a hole-opening reinforcement plan is designed to determine the specific position, size of the opening, and the reinforcement requirements, and the most suitable reinforcement method for the structure to be opened is selected to improve the hole-opening reinforcement effect and ensure the construction quality and safety.

[0005] To achieve the above purpose, the technical solution adopted by the present invention for the post-opening reinforcement method includes the following steps:

[0006] Step 1: Analyze one by one the material of the structure to be opened, the physical and mechanical properties of the structure to be opened, the load conditions of the structure to be opened, the opening position and size, and the remaining strength of the structure after the opening, and summarize them to form an evaluation report;

[0007] Step 2: Design a hole-opening reinforcement plan based on the evaluation report;

[0008] Step 3: Prepare construction materials and construction equipment in advance according to the hole-opening reinforcement plan, and prepare the construction site;

[0009] Step 4: Perform hole-opening based on the hole-opening reinforcement plan;

[0010] Step 5: Reinforce the structure around the hole based on the hole-opening reinforcement plan;

[0011] Step 6: Inspect and accept the hole-opening quality and the reinforcement quality.

[0012] A further improvement of the post - opening reinforcement method of the present invention lies in that the physical and mechanical properties described in step 1 are properties that affect the structural performance, including the strength, stiffness, and elastic modulus of the structure to be opened.

[0013] A further improvement of the post - opening reinforcement method of the present invention lies in that the load conditions described in step 1 include the static load of the structure to be opened before opening and the dynamic load during opening.

[0014] A further improvement of the post - opening reinforcement method of the present invention lies in that when performing step 2 above, a numerical simulation software is used to simulate the opening of the opening reinforcement plan and perform performance analysis to verify the feasibility of the opening reinforcement plan.

[0015] A further improvement of the post - opening reinforcement method of the present invention lies in that when performing step 5 above, when the opening size is small and the number of cut - off steel bars is within a certain limit, the compensation reinforcement method is adopted; when the opening size is large and the number of cut - off steel bars exceeds a certain limit, the method of adding side beams is adopted for reinforcement.

[0016] Compared with the prior art, the advantages of the present invention are as follows:

[0017] By analyzing and evaluating factors such as the material, physical and mechanical properties, load conditions, opening position and size, and remaining strength of the structure to be opened, the most suitable opening reinforcement plan is designed, improving the opening stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a flowchart of the post - opening reinforcement method of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0020] The following specific examples are used to illustrate the embodiments of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0021] The post - opening reinforcement method of the present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0022] Please refer toFigure 1 As shown, the post-opening reinforcement method includes the following steps:

[0023] Step 1: Analyze one by one the materials of the structure to be opened, the physical and mechanical properties of the structure to be opened, the load conditions of the structure to be opened, the location and size of the opening, and the remaining strength of the structure after opening, and summarize them to form an evaluation report;

[0024] Step 2: Design an opening reinforcement plan based on the evaluation report;

[0025] Step 3: Prepare construction materials and construction equipment in advance according to the opening reinforcement plan, and prepare the construction site;

[0026] Step 4: Make an opening based on the opening reinforcement plan;

[0027] Step 5: Reinforce the structure around the opening based on the opening reinforcement plan;

[0028] Step 6: Inspect and accept the opening quality and reinforcement quality.

[0029] Specifically, when implementing Step 3 above, it is necessary to ensure that the quality and performance of the construction materials meet the construction requirements, and conduct strict inspections and tests on the construction equipment to ensure its normal operation; when preparing the construction site: it is necessary to clean the construction area to ensure that the construction area is clean and tidy, and set up ventilation equipment to ensure the safety of construction personnel. At the same time, set up construction signs and warning signs to remind the surrounding personnel to pay attention to safety and avoid accidents.

[0030] Preferably, the physical and mechanical properties in Step 1 are the properties that affect the structural performance, including the strength, stiffness, and elastic modulus of the structure to be opened.

[0031] By analyzing the strength, stiffness, and elastic modulus of the structure to be opened, the stability of the structure to be opened is ensured, and the structure instability during subsequent opening is avoided.

[0032] Preferably, the load conditions in Step 1 include the static load of the structure to be opened when not opened and the dynamic load during opening.

[0033] By analyzing the static load and dynamic load of the structure to be opened in advance, the collapse of the opening during subsequent opening is avoided, and the opening stability is improved.

[0034] Specifically, when implementing Step 1 above, when analyzing the remaining strength of the structure after opening, it is necessary to ensure that the reinforcement measures can make the structure still meet the strength design requirements after removing some materials.

[0035] By pre-analyzing the remaining strength of the structure, it is avoided that the remaining structure does not meet the strength design requirements after the subsequent reinforcement measures are completed, affecting the structural stability.

[0036] Preferably, when performing the above step 2, a numerical simulation software is used to simulate the opening of the opening reinforcement plan and perform a performance analysis to verify the feasibility of the opening reinforcement plan.

[0037] By pre-simulating the opening reinforcement plan using a numerical simulation software, mistakes during actual construction are avoided, ensuring the feasibility of the opening reinforcement plan.

[0038] Specifically, when performing the above step 2, it is necessary to deeply understand the evaluation report:

[0039] First of all, it is necessary to understand the specific impact of the opening on the structure to be opened, including changes in bearing capacity, stiffness, ductility, etc.

[0040] Determine a suitable opening plan: According to the evaluation report, combined with the usage function and renovation requirements of the structure to be opened, determine the specific location and size of the opening and form an opening plan.

[0041] Select a suitable opening reinforcement method: Based on the evaluation report and the opening plan, select a suitable reinforcement method. The reinforcement method should be selected according to factors such as the type of structure, material, size and location of the opening, etc.

[0042] Design the details of the opening reinforcement: After determining the opening reinforcement method, it is necessary to design specific reinforcement details, such as the specifications of the reinforcement materials, the determination of the reinforcement location, the selection of the connection method, etc.

[0043] Consider the construction conditions and limitations: When designing the opening reinforcement plan, it is necessary to fully consider the actual situation and limiting conditions at the construction site, such as construction space, construction time, construction equipment, etc.

[0044] Preferably, when performing the above step 5, when the opening size is small and the number of cut-off steel bars is within a certain limit, the compensation reinforcement method is adopted; when the opening size is large and the number of cut-off steel bars exceeds a certain limit, the method of adding side beams is adopted for reinforcement.

[0045] Specifically, when the hole diameter ≤ 300mm and the number of cut-off steel bars ≤ 5%, no hole reinforcement treatment is required. When the hole diameter is between 300mm and 1000mm and the number of cut-off steel bars is between 5% and 20%, the compensation reinforcement method is adopted. The cut-off steel bars can be compensated with reinforcement at the hole edge, and usually steel plates or fiber cloth are used as the additional compensation reinforcement.

[0046] The method of strengthening by pasting steel plates is a specific method of compensating for reinforcement. The sequence and position of pasting the steel plates need to be determined according to the stress direction and the obstruction situation of the wall. The method of strengthening by pasting fiber cloth is also a kind of compensation strengthening method, mainly by pasting carbon fiber cloth. Similar to pasting steel plates, the position and method of pasting carbon fiber cloth also need to be determined according to the stress direction and the obstruction situation of the wall.

[0047] Specifically, when the hole diameter ≥ 1000mm and the number of cut-off steel bars ≥ 20%, a side beam is added around the inner circumference of the hole to support and transfer the load. The side beam can be made of section steel or cast-in-place concrete and has reliable anchorage with the floor slab and the support structure.

[0048] Specifically, when performing the above step 6, the following steps need to be included during the acceptance:

[0049] Inspection of the construction plan: Check whether the hole-opening reinforcement plan is complete and has been approved, whether it meets the design requirements and relevant standards. The construction plan should include construction organization, construction technology, construction progress, safety measures, etc.

[0050] Inspection of material quality: The materials used in the hole-opening reinforcement plan should meet the design requirements and have corresponding quality certification documents. When the materials enter the site, they should be inspected and accepted to ensure that they meet the design requirements and relevant standards. Key materials should be sampled or inspected comprehensively to ensure that their quality meets the requirements.

[0051] Supervision during the construction process: During the construction process, there should be special personnel to supervise and record the construction process to ensure that the construction technology meets the design requirements and relevant specifications.

[0052] Inspection of the reinforcement effect: After the construction is completed, the reinforcement effect of the hole should be inspected and accepted, which includes checking whether the reinforced structure meets the design bearing capacity requirements, detecting and rectifying possible potential safety hazards to ensure the structural safety.

[0053] Inspection of the appearance quality: It should be checked whether the reinforced part of the hole is flat and beautiful, without obvious defects, and does not affect the normal use of the structure.

[0054] Sorting out the acceptance materials: After the above inspections are completed, the relevant acceptance materials should be sorted out, including the construction plan, material quality certification documents, construction records, test reports, etc. These materials should be true, accurate, and meet the relevant regulations and requirements.

[0055] Through the above acceptance measures, the quality of the hole reinforcement is guaranteed.

[0056] It should be noted that the structures, proportions, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the conditions under which the present invention can be implemented. Therefore, they do not have any substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle", and "one" cited in this specification are only for the convenience of clear description and are not used to limit the scope of implementation of the present invention. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope within which the present invention can be implemented.

[0057] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not used to limit the present invention. Any person skilled in the art, without departing from the scope of the technical solution of the present invention, can make some changes or modifications to the above-disclosed technical content to obtain equivalent embodiments of equivalent changes. However, as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change, and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A method for reinforcement with a rear opening, characterized in that, Including the steps: Step 1: Analyze one by one the material of the structure to be holed, the physical and mechanical properties of the structure to be holed, the load condition of the structure to be holed, the position and size of the hole to be opened, and the remaining strength of the structure after the hole is opened, and summarize them to form an evaluation report; Step 2: Design a hole-opening reinforcement plan based on the evaluation report; Step 3: Prepare construction materials and construction equipment in advance according to the hole-opening reinforcement plan, and prepare the construction site; Step 4: Open a hole based on the hole-opening reinforcement plan; Step 5: Reinforce the structure around the hole based on the hole-opening reinforcement plan; Step 6: Inspect and accept the hole-opening quality and the reinforcement quality.

2. The post-opening reinforcement method according to claim 1, wherein The physical and mechanical properties described in Step 1 are the properties that affect the structural performance, including the strength, stiffness, and elastic modulus of the structure to be holed.

3. The post-opening reinforcement method according to claim 1, wherein The load condition described in Step 1 includes the static load of the structure to be holed before the hole is opened and the dynamic load during the hole-opening.

4. The post-opening reinforcement method according to claim 1, wherein, When performing Step 2 above, use numerical simulation software to simulate the hole-opening of the hole-opening reinforcement plan and perform performance analysis to verify the feasibility of the hole-opening reinforcement plan.

5. The post-opening reinforcement method according to claim 1, characterized in that, When performing Step 5 above, when the hole-opening size is small and the number of cut-off steel bars is within a certain limit, use the compensation reinforcement method; when the hole-opening size is large and the number of cut-off steel bars exceeds a certain limit, use the method of adding side beams for reinforcement.

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