Construction method for reinforcing method for increasing cross section of concrete slab bottom
By setting vent pipes and grouting joints in the template system, combined with support frames and rubber hammer vibration, the problem of structural damage and voids in the reinforcement of the bottom section of concrete floor slabs was solved, achieving high-quality reinforcement effect and low-cost construction.
Patent Information
- Application Number
- CN202511145398.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-15
- Publication Date
- 2025-11-07
AI Technical Summary
In existing technologies, the method of increasing the cross-section at the bottom of concrete floor slabs for reinforcement can lead to structural damage and voids in the concrete within the formwork, thus affecting the reinforcement effect and quality.
Vent pipes and grouting joints are installed in the template system. The air in the pouring space is discharged through the vent pipes to ensure that the grout is full. Combined with the vibration of the support frame and rubber hammer, the grout flow is promoted and voids are prevented.
It improves the effectiveness and reliability of concrete slab reinforcement, ensures construction quality, reduces costs, and provides a safe and economical construction solution.
Smart Images
Figure CN120906385A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application belongs to the technical field of floor reinforcement, in particular to a construction method for concrete slab bottom section enlargement reinforcement method. BACKGROUND
[0002] In the existing field of engineering reinforcement, common concrete structure reinforcement technologies include section enlargement reinforcement method, steel bonding reinforcement method and carbon fiber cloth reinforcement method, etc. Among them, the section enlargement method is widely used because it can significantly improve the strength and stiffness of the component, and the construction process is simple and the cost is relatively low. However, the section enlargement method is mainly used for beam, column and floor top reinforcement, and is less used for floor bottom reinforcement, especially for large-area concrete floor bottom, mainly due to the limitation of formwork system.
[0003] In the prior art, the concrete floor bottom section enlargement reinforcement method usually needs to be grouted through hole opening on the top of the original concrete floor or slot opening on the side form after the form is set, which will cause damage to the original concrete floor structure, hollow space due to incomplete filling of the concrete or grouting material in the form, etc., thereby seriously affecting the reinforcement effect and quality; therefore, we propose a construction method for concrete slab bottom section enlargement reinforcement method to solve the above problems. SUMMARY
[0004] In order to solve the above problems, the present application provides a construction method for concrete slab bottom section enlargement reinforcement method, which solves the problem that the traditional construction method will cause damage to the concrete floor structure.
[0005] The present application is realized by the following scheme: a construction method for concrete slab bottom section enlargement reinforcement method, comprising the following steps:
[0006] S1, gouging out a groove at the bottom of the floor to be reinforced;
[0007] S2, drilling and anchoring steel bars at the bottom of the floor, and binding the steel bar framework;
[0008] S3, setting up a form below the floor so that the form and the bottom of the floor form a pouring space, and the steel bar framework is located in the pouring space;
[0009] S4, providing a gas pipe by opening a perforation on the form corresponding to the position of the groove, setting the gas pipe between the groove and the perforation, and making one end of the gas pipe extend into the groove and the other end of the gas pipe extend out of the perforation or remain in the perforation;
[0010] S5, opening a grouting port at the bottom of the form, grouting into the pouring space through the grouting port, and stopping grouting when grout flows out of the gas pipe.
[0011] The further improvement of the construction method for the concrete slab bottom section increasing reinforcement method is that before the step S3 is constructed, a chiseling treatment is performed on the bottom of the slab to be reinforced and the dust is cleaned.
[0012] The further improvement of the construction method for the concrete slab bottom section increasing reinforcement method is that when the step S3 is constructed, a support frame is provided and the support frame is supported on the bottom of the formwork.
[0013] The further improvement of the construction method for the concrete slab bottom section increasing reinforcement method is that when the step S4 is constructed, a sealing treatment is performed between the other end of the air outlet pipe and the perforation.
[0014] The further improvement of the construction method for the concrete slab bottom section increasing reinforcement method is that when the step S1 is performed, a plurality of grooves are chiseled on the bottom of the slab to be reinforced; when the step S4 is performed, a plurality of perforations are provided on the bottom of the formwork, the plurality of perforations correspond to the plurality of grooves one by one, a plurality of air outlet pipes are provided and the plurality of air outlet pipes are arranged between each pair of grooves and perforations one by one.
[0015] The further improvement of the construction method for the concrete slab bottom section increasing reinforcement method is that when the step S5 is constructed, a grouting joint is provided and the grouting joint is installed on the grouting port to realize the grouting into the pouring space through the grouting joint.
[0016] The further improvement of the construction method for the concrete slab bottom section increasing reinforcement method is that a valve is arranged on the grouting joint and used for closing after the grouting is stopped to prevent the grout from flowing back.
[0017] The further improvement of the construction method for the concrete slab bottom section increasing reinforcement method is that during the grouting, a step of continuously knocking the bottom of the formwork with a rubber hammer is further included.
[0018] The further improvement of the construction method for the concrete slab bottom section increasing reinforcement method is that after the step S5 is constructed, a step of detecting whether the grout in the pouring space reaches the design strength after being solidified is further included, and the formwork is removed after the design strength is reached.
[0019] Compared with the prior art, the beneficial effects of the present application are as follows:
[0020] The present application sets the air outlet pipe and the grouting joint in the template system, ensures the air exhaust during grouting, makes the slurry fill the pouring space, overcomes the problems of the damaged original concrete floor structure, the hollow space caused by the concrete or grouting material not filling in the template and the like caused by the traditional ordinary template system, guarantees the construction quality, improves the effectiveness and reliability of the reinforcement, fully utilizes the advantages of the section enlargement reinforcement, has the characteristics of simple construction process and low cost, and provides a safe and economic construction scheme and technology for the large-area concrete slab bottom reinforcement. BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1 The construction method flow chart of the present application is shown.
[0022] Figure 2 The template construction position schematic view of the present application is shown.
[0023] Figure 3 The air outlet pipe installation position schematic view of the present application is shown.
[0024] Figure 4 The grouting joint installation position schematic view of the present application is shown.
[0025] In the figure: 1, floor slab; 2, template; 3, pouring space; 4, groove; 5, air outlet pipe; 6, grouting joint; 7, support frame; 8, valve. DETAILED DESCRIPTION
[0026] In order to solve the problem that the traditional construction method can cause the damage of the concrete floor structure, the present application provides a construction method for the section enlargement reinforcement method of the concrete slab bottom. The construction method for the section enlargement reinforcement method of the concrete slab bottom is further described below in combination with the drawings.
[0027] Referring to Figures 1-4 The construction method for the section enlargement reinforcement method of the concrete slab bottom includes the following steps:
[0028] S1, a groove 4 is chiseled at the bottom of the floor slab 1 to be reinforced;
[0029] S2, the hole drilling and steel bar planting are performed at the bottom of the floor slab 1, and the steel reinforcement cage is bound;
[0030] S3, the template 2 is supported below the floor slab 1, so that the pouring space 3 is formed between the template 2 and the bottom of the floor slab 1, and the steel reinforcement cage is located in the pouring space 3;
[0031] S4, the perforation is provided at the position corresponding to the groove 4 on the template 2, the air outlet pipe 5 is arranged between the groove 4 and the perforation, one end of the air outlet pipe 5 is inserted into the groove 4, and the other end of the air outlet pipe 5 is out of the perforation or remains in the perforation;
[0032] S5, opening a grouting port at the bottom of the formwork 2, injecting grout into the pouring space 3 through the grouting port, and stopping grouting when grout flows out of the air outlet pipe 5.
[0033] By setting the air outlet pipe 5 in the formwork 2 system, it ensures that the gas in the pouring space 3 can be exhausted when grouting, so that the injected grout can fill the pouring space 3, overcoming the problems of damage to the original concrete floor 1 structure, hollows in the formwork 2, and the like caused by using traditional formwork 2 systems, ensuring construction quality, improving the effectiveness and reliability of reinforcement, fully utilizing the advantages of section enlargement reinforcement, and providing a safe and economical construction scheme and technology for large-area concrete floor bottom reinforcement.
[0034] Before the construction step S3, it further includes the steps of: chiseling the bottom of the floor 1 to be reinforced and cleaning the dust.
[0035] By using the above design, the adhesion between the original floor 1 and the newly poured and solidified grout can be enhanced, ensuring the integrity and durability of the structure.
[0036] As shown in Figure 2 When the construction step S3 is performed, a support frame 7 is provided and supported at the bottom of the formwork 2.
[0037] By using the above design, the support frame 7 can provide stable support for the formwork 2 to ensure stable grouting construction.
[0038] When the construction step S4 is performed, it further includes the step of: sealing between the other end of the air outlet pipe 5 and the perforation.
[0039] Further, in this embodiment, the other end of the air outlet pipe 5 passes through the perforation;
[0040] By using the above design, the air outlet pipe 5 and the perforation are sealed with sealing glue, which can prevent grout leakage during grouting.
[0041] As shown in Figure 2 When step S1 is performed, a plurality of grooves 4 are chiseled at intervals at the bottom of the floor 1 to be reinforced; when step S4 is performed: a plurality of perforations are opened at the bottom of the formwork 2, and the plurality of perforations correspond one-to-one to the positions of the plurality of grooves 4, a plurality of air outlet pipes 5 are provided, and the plurality of air outlet pipes 5 are arranged one-to-one between each pair of grooves 4 and perforations.
[0042] By providing a plurality of air outlet pipes 5, it can ensure that the gas in the pouring hole can be fully exhausted, so as to ensure that the injected grout can fill the entire pouring space 3.
[0043] As shown in Figure 4As shown, at the construction step S5, the grouting joint 6 is provided and installed at the grouting port to realize grouting into the pouring space 3 through the grouting joint 6.
[0044] Further, the grouting joint 6 is connected with the grouting equipment to realize grouting construction.
[0045] The valve 8 is arranged on the grouting joint 6 to be closed after stopping grouting to prevent backflow of the grout.
[0046] By using the valve 8, backflow of the grout before solidification can be avoided.
[0047] In the grouting process, the step of continuously hitting the bottom of the formwork 2 with a rubber hammer is further included.
[0048] By continuously hitting the bottom of the formwork 2 with a rubber hammer in the grouting process, high-frequency vibration and impact are used to promote the grout or concrete to flow to the bottom and corners of the formwork 2, to discharge air bubbles and reduce voids, thereby avoiding defects such as hollowing and honeycomb, and improving the compactness; the hammer head made of rubber has elasticity and buffering property, which can effectively transmit energy and avoid hard damage to the formwork 2.
[0049] After the construction step S5, the step of detecting whether the grout in the pouring space 3 reaches the design strength after solidification, and removing the formwork 2 after reaching the design strength is further included.
[0050] By regularly detecting the strength of the grout in the pouring space 3 after solidification, and removing the formwork 2 after reaching the design strength, the construction quality is improved by avoiding judgment according to personal experience; and after removing the formwork 2, the part of the air outlet pipe 5 protruding from the solidified grout can be cut off, and then repaired.
[0051] It should be noted that, in this document, the terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.
[0052] The above embodiments of the present application are described in detail with reference to the accompanying drawings, and those skilled in the art can make various changes to the present application according to the above description. Therefore, some details in the embodiments should not constitute a limitation on the present application, and the scope of protection of the present application will be defined by the appended claims.
Claims
1. A construction method for a concrete slab bottom section enlargement reinforcement method, characterized by, The method comprises the following steps: S1, chiseling a groove on the bottom of the floor to be reinforced; S2, drilling and anchoring steel bars on the bottom of the floor, and binding the steel bar framework; S3, setting a formwork under the floor, so that a pouring space is formed between the formwork and the bottom of the floor, and the steel bar framework is located in the pouring space; S4, providing a gas pipe by opening a through hole on the formwork at a position corresponding to the groove, arranging the gas pipe between the groove and the through hole, and making one end of the gas pipe extend into the groove and the other end of the gas pipe pass through the through hole or remain in the through hole; S5, opening a grouting port on the bottom of the formwork, grouting into the pouring space through the grouting port, and stopping grouting when the grout flows out of the gas pipe.
2. The construction method for the bottom section reinforced method of concrete slab according to claim 1, characterized in that, Before the step S3 is constructed, the method further comprises the steps of: roughening the bottom of the floor to be reinforced and cleaning the dust.
3. The construction method for the bottom section reinforced method of concrete slab according to claim 1, characterized in that, When the step S3 is constructed, a support frame is provided and supported on the bottom of the formwork.
4. The construction method for the bottom section reinforced method of concrete slab according to claim 1, characterized in that, When the step S4 is constructed, the method further comprises the step of: sealing between the other end of the gas pipe and the through hole.
5. The construction method for the bottom section reinforced method of concrete slab according to claim 1, wherein When the step S1 is performed, a plurality of grooves are chiseled on the bottom of the floor to be reinforced; when the step S4 is performed, a plurality of through holes are opened on the bottom of the formwork, and each of the plurality of through holes corresponds to one of the plurality of grooves, a plurality of gas pipes are provided, and each of the plurality of gas pipes is arranged between each pair of the groove and the through hole.
6. The construction method for the bottom section reinforced method of concrete slab according to claim 1, wherein When the step S5 is constructed, a grouting joint is provided and installed on the grouting port to realize grouting into the pouring space through the grouting joint.
7. The construction method for the bottom section reinforced concrete slab according to claim 6, wherein The grouting joint is provided with a valve for closing after stopping grouting to prevent backflow of grout.
8. The construction method for the bottom section reinforced method of concrete slab according to claim 1, wherein During grouting, the method further comprises the step of: continuously knocking the bottom of the formwork with a rubber hammer.
9. The construction method for the bottom section reinforced method of concrete slab as recited in claim 1, wherein, After the step S5 is constructed, the method further comprises the step of: detecting whether the grout in the pouring space reaches the design strength after solidification, and removing the formwork after the design strength is reached.