Concrete punching-free anchoring construction method
By pre-embedding positioning devices in the substrate and using special tools to remove and install anchor bolts, the problems of drilling affecting quality and complex operation and maintenance in traditional anchoring methods are solved. This achieves a highly efficient anchoring method that does not require drilling, improving construction and maintenance efficiency and reducing costs and environmental impact.
Patent Information
- Application Number
- CN202511474318.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-15
- Publication Date
- 2025-12-19
AI Technical Summary
Traditional anchoring methods involve drilling holes in the substrate, which affects quality and the environment. Furthermore, the operation and maintenance process is complex, and it is difficult to ensure that the hole diameter and depth are consistent, resulting in unstable anchoring quality and increased construction and maintenance costs.
The positioning device is pre-embedded in the substrate and is removed and installed with anchor bolts after the substrate has cured using special tools, avoiding drilling and cleaning. The positioning device is made of weather-resistant composite material and has a hole-enlarging function to ensure the quality of rebar position adjustment and anchor bolt installation.
This method enables drilling-free anchoring, reducing construction steps, ensuring anchoring quality, lowering costs, extending service life, and minimizing impact on substrates and the environment.
Smart Images
Figure CN121161933A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of building construction technology, and in particular to a method for anchoring concrete without drilling. Background Technology
[0002] The importance of anchoring in the infrastructure field is self-evident. Its purpose is to anchor external structures to the substrate, transfer the force of the external connection system to the substrate, and ensure the stability and safety of the overall substrate when the connection system is in use.
[0003] Traditional anchoring methods include pre-anchoring and post-anchoring. Pre-anchoring involves embedding the components directly during the construction of the substrate. Because it is embedded during the substrate construction period, it has advantages such as simplicity, efficiency, faster subsequent installation, and no need to damage the substrate. However, when there are many anchoring connections, its disadvantages become more obvious, including high cost, inaccurate embedding, uncontrollable embedding quality, difficulty in rectification once problems occur, and significant time commitment.
[0004] Building upon this foundation, post-anchoring connections have rapidly developed. Because they eliminate the need for pre-embedding during the foundation construction phase, they significantly reduce construction time and costs. Furthermore, post-anchoring connections allow for the installation of anchor bolts simply by drilling holes at the required locations. While the use of post-anchoring is increasing year by year, problems during installation have gradually emerged. Firstly, drilling into the substrate can affect the concrete and significantly increase the chance of encountering reinforcing steel. Secondly, the quality of drilling is difficult to guarantee, especially the hole diameter and depth, as variations among different construction workers make it challenging to ensure accuracy. The quality of hole cleaning after drilling also varies from person to person. Inadequate cleaning affects the anchoring quality and durability. Moreover, cleaning generates a large amount of dust, impacting the health of construction workers and the environment. Summary of the Invention
[0005] The purpose of this invention is to provide a non-drilling concrete anchoring method to solve the above-mentioned problems.
[0006] The present invention achieves the above objectives through the following technical solutions: A method for anchoring concrete without drilling includes the following steps: S1. Based on the required size of the anchor bolt, determine the hole diameter and depth, and produce the positioning device. S2. When pouring the base material, fix the pre-embedded positioning device in advance and make the positioning device avoid the main reinforcement. S3. After the substrate has completely cured, the positioning device is left in the substrate. S4. When it is necessary to replace the anchor bolt in the original position, use the removal tool to remove the positioning device; S5. Following the installation steps for in-situ anchor replacement, directly install the in-situ anchor replacement in the hole where the positioning device was removed. If the in-situ anchor replacement is not installed, the positioning device will remain in the substrate. S6. If other equipment needs to be installed at the positioning device during operation and maintenance, use the removal tool to remove the positioning device and use the original anchor bolt replacement to quickly install and fix the equipment. S7. When the exposed threaded rod of the original anchor bolt is rusted, apply torque in the opposite direction to remove the rusted threaded rod and replace it with a new threaded rod in the original position to achieve rapid repair.
[0007] The beneficial effects are as follows: During the construction phase, a removable positioning device is pre-embedded in the substrate, allowing for adjustment of the rebar position based on the device's location, ensuring the device completely avoids the rebar. When anchor bolts need to be installed, the positioning device can be removed from the fully cured concrete substrate using specialized tools, allowing the anchor bolt to be installed directly in the device's positioning hole without drilling or cleaning. During maintenance, if issues such as bolt corrosion occur, there is no need to drill into the substrate; the bolt can be removed in situ and replaced with a new one. Furthermore, the pre-embedded positioning device has a built-in hole-enlarging function, eliminating the need for hole enlargement during subsequent in-situ anchor bolt replacements. This reduces construction steps while ensuring the quality of hole enlargement and anchor bolt installation. Therefore, this method achieves drill-free anchoring during both the construction and maintenance phases.
[0008] The additional technical features and advantages of the present invention will become more apparent from the following description, or may be learned through practice of the invention. Attached Figure Description
[0009] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the following detailed description to explain the invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a flowchart of a concrete anchorage method without drilling as described in this invention. Detailed Implementation
[0010] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.
[0011] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.
[0012] The present invention will be further described below with reference to the accompanying drawings: like Figure 1 As shown, a concrete anchorage method without drilling includes the following steps: S1. Based on the required size of the anchor bolt, determine the hole diameter and depth, and produce the positioning device. S2. When pouring the base material, fix the pre-embedded positioning device in advance and make the positioning device avoid the main reinforcement. S3. After the substrate has completely cured, the positioning device is left in the substrate. S4. When it is necessary to replace the anchor bolt in the original position, use the removal tool to remove the positioning device; S5. Following the installation steps for in-situ anchor replacement, directly install the in-situ anchor replacement in the hole where the positioning device was removed. If the in-situ anchor replacement is not installed, the positioning device will remain in the substrate. S6. If other equipment needs to be installed at the positioning device during operation and maintenance, use the removal tool to remove the positioning device and use the original anchor bolt replacement to quickly install and fix the equipment. S7. When the exposed threaded rod of the original anchor bolt is rusted, apply torque in the opposite direction to remove the rusted threaded rod and replace it with a new threaded rod in the original position to achieve rapid repair.
[0013] During construction, a removable positioning device is pre-embedded in the substrate. This allows for adjustment of the rebar position based on the device's location, ensuring the device completely avoids the rebar. The positioning device is made of highly weather-resistant composite material, with a diameter matching the drilling diameter of the anchor bolt, and possesses both rigidity and flexibility. The base of the positioning device is enlarged to accommodate the in-situ anchor bolt replacement. When not in use, the positioning device is embedded in the concrete substrate, exhibiting high weather resistance and fire resistance. Its special design also provides waterproofing, allowing for long-term embedding. When anchor bolt installation is needed, the positioning device can be removed from the fully cured concrete substrate using specialized tools. No further substrate manipulation is required before installing the in-situ anchor bolt, eliminating the need for drilling or cleaning. To ensure the anchoring life meets the substrate's maximum 100-year lifespan, the exposed bolt can be removed in situ. During subsequent maintenance, if bolt corrosion occurs, drilling into the substrate is unnecessary; the bolt can be removed and replaced in situ. Furthermore, the pre-embedded positioning device has a built-in hole-enlarging function, eliminating the need for hole enlargement when replacing anchor bolts in situ later. This reduces construction steps while ensuring the quality of the hole enlargement and the installation quality of the anchor bolts.
[0014] This positioning device can be fixed to templates of different materials and thicknesses by bolting or plugging during the casting of the base material. It features simple installation and precise positioning, and is cheaper than traditional pre-embedded products. When used with in-situ replacement anchors, it can have the same service life as the base material, achieving the requirement of a 100-year service life.
[0015] When the substrate is fully cured and in-situ anchor replacement is required, a specialized removal tool can be used to remove the positioning device through methods including but not limited to heating, pulling, and rotation. Post-anchoring connection technology has always been a key technology for anchor connections due to its advantages of flexible placement, low cost, and simple construction. However, its installation requires drilling, which has a significant impact on the substrate concrete and internal reinforcing steel. Furthermore, the hole diameter, depth, and the quality of hole enlargement and cleaning all affect the anchoring quality and operational safety. Replacing rusted anchors during operation and maintenance is also a major project, requiring re-drilling, enlarging, and cleaning, which is time-consuming and labor-intensive. This method, however, requires no drilling, enlargement, or cleaning of the substrate; it allows for direct in-situ anchor replacement.
[0016] According to the international standard ISO 12944 for corrosion protection coatings, different environments are classified into six corrosion levels, C1-C5M. Based on ISO 12944, the environment experiences annual zinc depletion, therefore galvanized anchors cannot meet the 100-year service life requirement. Consequently, when anchors become unusable, it is necessary to re-drill holes in the substrate, install new anchors, and relocate the fasteners. This is time-consuming and labor-intensive, damaging the substrate. Over time, this creates a vicious cycle, with the impact on the substrate increasing. In-situ anchor replacement technology solves this problem. Its under-end cutting head is made of stainless steel, and the exposed threaded rod is made of carbon steel with a zinc coating for corrosion protection. Once the exposed threaded rod rusts, the damaged rod can be removed and replaced directly in place with a new one. There is no need to drill holes in the substrate or relocate the anchor. This saves time and labor, does not damage the substrate, and significantly reduces maintenance time.
[0017] In summary, this construction method utilizes a low-cost composite material positioning device pre-embedded during the pouring of the concrete substrate. This device is simple to position and possesses characteristics such as weather resistance, fire resistance, and prevention of substrate leakage. The bottom of the positioning device is conical, corresponding to the location and size of the enlarged hole at the bottom of the in-situ replacement anchor bolt, eliminating the need for enlargement during subsequent installation. A dedicated removal device can be used to remove the positioning device from the cured concrete substrate, allowing for immediate installation of the in-situ replacement anchor bolt without any further manipulation of the substrate. In-situ anchor bolt replacement enables rapid installation, and during maintenance, the bolt can be removed in situ for replacement without any subsequent drilling or enlargement operations on the substrate. This significantly extends the service life of the anchoring system and reduces both new construction and maintenance costs.
[0018] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.
Claims
1. A concrete punch-free anchoring method, characterized by: The method comprises the following steps: S1, determining the hole diameter and hole depth of the anchor bolt according to the size of the in-situ replacement anchor bolt, and producing a positioning device; S2, fixing the pre-embedded positioning device in advance when the base material is poured, and making the positioning device avoid the main reinforcement; S3, reserving the positioning device in the base material after the base material is completely cured; S4, taking out the positioning device using a taking-out tool when the in-situ replacement anchor bolt is to be installed; S5, directly installing the in-situ replacement anchor bolt in the hole from which the positioning device is taken out according to the installation steps of the in-situ replacement anchor bolt, and continuing to reserve the positioning device in the base material without installing the in-situ replacement anchor bolt; S6, if other equipment needs to be installed at the positioning device during operation and maintenance, the positioning device is taken out using the taking-out tool, and the equipment is quickly installed and fixed using the in-situ replacement anchor bolt; S7, when the exposed screw rod of the installed in-situ replacement anchor bolt is rusted, the rusted screw rod is taken out by applying a reverse torque to the screw rod, and a new screw rod is replaced to realize quick repair.