Building a wide range of use of anchorage rubber

来源：安德美    发布时间：2020年10月26日 09:35:12

Construction of anchorage glue used in a variety of construction projects, the amount of construction plant anchorage is generally based on the design of the planting-bar radius and hole depth to calculate the use of a wide range of building materials.

 Building anchorage glue in the reinforcement project more applications. In addition the hydraulic structure of the dam body to increase the connection of old and new concrete have applications. Construction of anchorage for the anchorage of the structure, equipment, anchor bolts and other anchoring applications. Buy carbon fiber plastic, select Shanghai ANDME.

 For the reinforced concrete bridge with cracks, it is a new bridge maintenance technology to inject the glue into the bridge crack. Despite the relatively small cracks, but allowed the development of bridges and bones may cause fatal injuries. So blocking bonding is necessary, inside the glue played a moisture, rust, reinforcement, compression, repair and so on.

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 Reinforcement and Strengthening of Reinforced Concrete Members

 Reinforced concrete components beyond a certain number of years, will show a certain deformation or damage. Some of these buildings or structures due to the use beyond its own limits; some due to the poor quality of construction; in this case, taking into account the reasons for the funds, often difficult to use due to quality or use of demolition and reconstruction problems, to continue to use It needs to be in the structural reinforcement, reinforcement, transformation and maintenance. Reinforced concrete reinforcement methods have their own characteristics.

 Fiber Reinforced Plastics - Reinforcing Method. Reinforcing fiber reinforcement is the use of resin cementing material, fiber reinforced composite material is affixed to the reinforcement of reinforced components of the tension area, it is to work together with the reinforced cross-section, so as to reach the reinforcement of structural components and improved Structure of the purpose of mechanical properties. It is a very simple and effective use of reinforcement reinforcement method, but was asked to strengthen the strength of reinforced concrete members shall not be lower than the strength level of C15, and the appearance of the positive tensile strength of concrete shall not be less than 1.5 MPa, in addition to paste But also has the advantages of corrosion resistance, moisture resistance, simple and as little as possible to increase the structural weight, durability, lower maintenance costs, etc., but there is fire protection requirements for fire treatment, the method applies to a variety of mechanical properties Reinforced concrete structures and other structures.

Increase the support reinforcement method. Increasing the support reinforcement method is to increase the bearing point, reduce the calculation span of the bending member, to reduce the role of the reinforcement on the bending moment, and then disperse the purpose of bearing capacity. According to the bearing members of the different performance can be divided into two kinds of rigid fulcrum and elastic fulcrum reinforcement methods. The method is simple and reliable, but easy to affect the original appearance and function of the building, and will reduce the use of space; This method is suitable for beam, plate, frame, grid and other structures of reinforcement.

Bonded Outer Shaped Steel Reinforcement Method. Outsourcing steel reinforcement is the steel (usually angle or channel steel) or steel plate wrapped in the corners of the reinforced or corners of the reinforcement approach, reinforced by external steel beam reinforced concrete beam also known as wet steel reinforcement method, the use of reinforced concrete Component, epoxy resin adhesive should be used for perfusion, the steel and reinforced components are bonded into a whole, to ensure that the type of steel frame and the original component effectively constitute a whole common force. Its characteristic is the force is reliable, the construction is tedious, the scene work load is small, but the steel quantity is bigger, and should not use in the unprotected condition under the environmental temperature above 60 degrees high temperature place; Is suitable for the use not to be allowed to increase But it is also required to enhance the carrying capacity of the reinforced concrete components.

Pressed steel plate reinforcement method. Reinforced concrete external reinforcement steel plate is in the component bearing capacity of the lack of sections (normal cross-section tension zone, the normal cross-section pressure or oblique cross-section) surface paste high strength steel plate, so that the original reinforced concrete and steel as a The new force of the whole common force, restrain the deformation of concrete, reinforced the stiffness and crack resistance of the strengthened members, and effectively play the bending steel plate, shear, compression performance, and will not be reinforced concrete components Resulting in stress concentration and reinforcement of the approach used. Reinforced concrete members are required to be reinforced at the site of the test concrete strength rating shall not be less than C15, and the concrete surface tensile bond strength shall not be less than 1.5 MPa, and the plate should be designed to only accept the role of axial stress , Steel surface should be anti-corrosion treatment, anti-corrosion materials on the surface of steel and adhesives harmless. It is characterized by simple construction, fast speed, short construction period; on-site wet work or plastering only a small amount of wet work, fire and life impact; direct force, reinforcement effect, good durability; The original appearance and the original clearance has no significant effect, but the reinforcement effect depends largely on the bonding process and the degree of operation; for receiving static and in normal humidity environment, bending or tension members of the reinforcement.

Strengthen the section of reinforcement. The effective height of the section is increased and the cross-sectional area is increased to increase the flexural capacity, the shear capacity of the oblique section and the overall rigidity of the member, so as to strengthen and reinforce the reinforced concrete members. . Strengthen the section reinforcement method in the design of the structure side and must deal with the new part and the original part of the interface, making it a whole common stress problem. The relevant experiments show that the stress of the strengthened members will be complicated, such as tension, compression, bending and shearing. The key is shear stress and tensile stress. In the elastic stage, the shear stress and the normal tensile stress of the joint surface are mainly borne by the bonding strength of the old and new concrete on both sides of the joint surface. After cracking and under the limit state, the anchoring steel bar or anchor bolt through the joint surface The resulting passive shearing friction transfer.

 Prestressed reinforcement method. Prestressed reinforcement method is the use of external prestressed steel rod or steel strut on the part or the whole body to reinforce the approach, through the application of prestressing method to change the original component of internal force transfer and stress redistribution, resulting in the original component of the reinforcement Stress and deformation caused by the partial or all of the phenomenon can be partially or completely offset, so the post-added prestressed components can work together with the original component, the bearing capacity of the component can be significantly improved, and can reduce the deformation of components, crack growth.

Replacement concrete reinforcement method. Replacement of concrete reinforcement method refers to the original members of low strength, toughness of the relevant parts of the concrete parts with high strength, good toughness of the concrete replacement method. The method applies to the bearing members of the bearing area of concrete strength is low or serious defects in parts of reinforcement. Construction technology is simple and convenient, short construction period, small footprint, does not affect the use of functions, and the cost is relatively low, economic and reasonable. When the reinforced concrete members are reinforced by this method, they shall not replace the local concrete strength grade of the original members, and the results of field tests shall not be lower than the strength grade specified in the construction of the concrete members. Replacement of concrete strength grade should be higher than the original component of concrete and should not be lower than C25. The replacement depth of concrete, the board should not be less than 40mm, beams, columns by artificial pouring, should not be less than 60mm, the use of radiation method of construction should not be less than 50mm, replacement length should be based on concrete strength and defect detection and verification results, However, for both non-full-length permutations, the two ends should not extend less than 100 mm. The replacement site shall be located in the compression area of the member and the defective concrete shall be removed in accordance with the direction of force. The location of the defective concrete shall be eliminated along the entire width or symmetrical sides of the structure without excluding only a part of the section.

 Construction technology requirements and the additional layer structure construction matters needing attention. Dismantling works: Protective demolition techniques are commonly used (which are significantly different from destructive demolition) and include comprehensive techniques for determining removal methods; selecting appropriate materials, dismantling machinery; and developing practical protective measures. Dismantling the use of top-down approach, and in accordance with the characteristics of the original structure, each of the specific demolition of a reasonable arrangement to determine the removal order. In order to ensure the safety of the staff and the construction workers, in addition to the necessary level of protective sheds, protective walls, but also to minimize noise, dust control can be used static crushing, local picks, artificial ticking and other methods. Reinforcement, layering works: The chemical anchorage of rebar should be constructed by professional construction team and done on-site inspection. The joints of old and new concrete shall be chiseled and chamfered to a depth of not less than 6 mm; all pieces of floating ballast must be removed and Rinse with water; in the entire construction process should take reliable support measures; reinforcement of the construction should comply with the reinforcement technical specifications.