Zhangjiajie Strengthened by CFRP company

 Strengthened by CFRP company 159-0066-1030 Luo workers Zhangjiajie Strengthened by CFRP Strengthened by CFRP company Zhangjiajie Zhangjiajie Zhangjiajie carbon fiber reinforced with carbon fiber sheet Our company specializes in a variety of high-performance carbon-fiber-reinforced materials, production and sales. And it has a special professional qualifications reinforcement. First, according to the way structural reinforcement and reinforcement of the role of reinforcement of concrete structures methods can be divided into direct and indirect reinforcement reinforcement method. Direct Consolidation Act including increasing section method, the outer clad law, increase prestressed law, bonded with plate method; indirect reinforcement method include increased pivot points, increase support system method, shear reinforcement method. Increasing section reinforcement method name implies, is to increase the cross-sectional method and then wrapped around the concrete elements to build a layer of concrete, increasing the force structure of the cross-sectional area, thereby increasing the bearing capacity structure. The method, applied very widely, the construction process is simple and mature, adapt to a wide range, can be applied to columns, beams, walls, slabs and other concrete structures. However, increasing section method work site is large, concrete curing a long period, and after-sectional dimension members will increase the impact of space and beautiful houses. Increasing section method can be divided to increase the cross-sectional size of the main reinforcement section and to increase mainly in two forms. The former, after the meeting in order to ensure normal performance pouring concrete, you must configure the appropriate structural steel; the latter, in order to ensure the increase of reinforced after the performance, to be pouring a certain thickness of the protective layer. STRENGTHENED REINFORCED usually ordinary concrete, if the cladding layer is relatively thin, reinforced dense, fine aggregate concrete should be used to ensure that the density of concrete; increased steel reinforcement method can also be used such as steel. 2 Outsourcing Outsourcing Steel Reinforcement Steel Reinforcement in the four corners of the building structure is wrapped with angle, improve the bearing member. The reinforcement method are dry, wet between the two forms, the former outsourcing steel and original member because no substantial bond, the two can not be together by force, and thus its capacity is improved less effective; the latter, steel angles and original member using latex cement or epoxy bonding or the like as a whole, the two can work together by force, its reinforcing effect is good. Outsourcing Steel Reinforcement simple construction, not the workload, force structure is also more reliable and suitable not allowed to increase the cross-sectional structure, but also can greatly increase the bearing capacity of the reinforcement member, typically used for beams, columns, reinforcement truss chords and other components. 3 prestressed reinforcement method in vitro addition of former members prestressed reinforced, prestressed by its method, change the internal force distribution of the original structure in order to achieve the purpose of improving the bearing capacity of the structure. Additional prestressing rod stays with the original structure of the common good performance, its carrying capacity of increase is relatively large. The law applies to large span structures and large-scale structure using the general method can not very satisfactory reinforcing or strengthening higher stress and strain state reinforcement, but this method should not be used in the construction or concrete shrinkage of concrete high humidity environments Xu becomes larger reinforced concrete structures. 4 additional reinforcement method fulcrum fulcrum additional reinforcement is added so that the calculated pivot span structure is reduced, thereby changing the internal force distribution structure, thereby improving the bearing capacity of the structure. For example, in the middle of the beams, plates and other structures increased a strong point, increasing the number of cross-structure, reducing the span, therefore, greatly increase the bearing capacity of the structure, but also can increase the stiffness of the structure, reducing deflection structure . This method for large-span structure reinforcement in the space of less demanding beams, plates, horizontal truss structure, the effect is very significant. The only drawback of this method is that after the addition of the fulcrum, the use of space greatly influenced by the building structure. 5 Paste Paste steel reinforcement steel reinforcement method method is to use a special plate structures require reinforcing member glued to the surface so that the two forces work together to improve the bearing capacity of the structure. In fact, the law is an in vitro reinforcement, increasing its reinforcement ratio, in order to improve the structural rigidity and strength. Paste the steel reinforcement method of bonding glue is very high, must have high strength glue stick adhesive ability, not aging, by the environment is small, a small amount of deformation temperature and other characteristics. Paste the steel reinforcement method is quick, simple, and to the appearance of the structure, the impact is very small space, the construction process does not affect the normal use of the building, so the building structure reinforcement is widely used. 6 CFRP material reinforced CFRP material reinforcement is a new reinforcement method, fiber-reinforced composite materials are also building the builders actively explore new materials. Fiber materials typically have high strength, light weight, corrosion resistance, non-magnetic and other advantages. In recent years, with the improvement of technology development and production, fiber and composite materials have been more and more applications in civil engineering, in particular, apply to structures in the repair and reinforcement. These are the structural reinforcement of several commonly used methods, each method has its advantages and disadvantages, each has its own scope, so the choice to determine the strengthening method should be based on the reliability of the identification results and reduce the impact of structural bearing capacity reasons, combined with the characteristics of the building structure, considering the safety, economy, applicability, based on merit. Reinforcement is important to note the following four points: static reinforcement must be considered secondary load requirements; seismic reinforcement must consider the overall ductility and stiffness requirements; must consider the feasibility of construction; we must consider reinforcing effect and economic indicators, a comprehensive analysis. Second, the problem of structural design and computing design configuration aspects 1. ① framework stirrup joint core zone configuration specification shall meet the requirements specified in the stirrup stirrup encrypted area frame column stirrup ratio of the minimum volume requirement, most of the designers can give enough attention, but "Seismic Design of Buildings" (GB50011-2010) specified in "One, two, three frame joints stirrup core area of ??not less than 0.12,0.10 respectively 0.08 and the volume stirrup ratio of not less than 0.6%, respectively, 0.5%, 0.4%. "Design is often overlooked, especially not when the axial compression ratio, often does not meet the requirements. This provision is to ensure that an important node in the core area of ??ductile structural measures should be strictly adhered to. ② bottom frame column stirrup encrypted area range should meet the requirements of "Seismic Design of Buildings" (GB50011-2010) provides that: "the lower end of the bottom of the column column clear height of not less than 1/3", the design should highlight the frame beam ③ The longitudinal reinforcement ratio should be noted that "Seismic Design of Buildings" (GB50011-2010) provides that: "When the end frame girder longitudinal tensile reinforcement ratio is greater than 2 percent, the smallest diameter beam stirrup value should be higher than Table 6.3 .3 increasing the value specified in 2mm. "In the current design, this provision is often overlooked, resulting in 梁端延 insufficient. Question 2. ① computing basic design earthquake acceleration value "Seismic Design of Buildings" (GB50011-2010) provides that: seismic intensity of 7 degrees, the basic design earthquake acceleration of 0.1g and 0.15g respectively two kinds of earthquake fortification intensity is 8 degrees, the basic design earthquake acceleration of 0.2g and 0.3g were two kinds. ② Beam Stiffness amplification factor computing software SATWE or TAT beam input model are rectangular section, causing stiffness of the structure is greater than the actual calculation of the stiffness, the calculated seismic force is too small, making the structure unsafe. Therefore, when calculating the beam stiffness amplification, the amplification factor in the beam take 2.0, while the beam of 1.5 is appropriate. ③ beam stirrups results need independent review "Design of Concrete Structures" (GB50010-2010) provides: Independent beams under concentrated load shall be calculated formulas and concentrated loads between point-to-stirrup seat , should be uniform configuration. But SATWE software to calculate beam stirrup, this situation is not considered independent of the beam are calculated according to the formula, sometimes resulting in the calculation result is smaller, the design met if there are circumstances exist independent of the beam, the beam stirrups response results them manually review. Ming-chi, the company is high-tech enterprise specializing in the production of reinforcing and strengthening the construction of the necessary materials and qualified! Main products: Carbon Fiber Sheets (200g.300g), carbon fiber plastic, anchorage glue, chemical anchors, steel glue stick, pouring glue, potting compound. Structural reinforcement construction company to undertake structural reinforcement Qidong! Tel Mingzhi reinforcement company: 13381504949 Ming-chi reinforcement company: 15900661030: reinforcement of the existing building structure needs are many, mainly due to capacity, stiffness, seismic performance of the structure and so can not meet the need for safe use. Although the building structure in the design phase are rigorously calculate the strength of the building structure, stiffness, durability certainly meet regulatory requirements. However, due to construction defects, or design considerations not comprehensive, improve the existing design standards and other factors, inadequate bearing capacity of the building structure, reduce safety stock, and some even have some security risks; in the course of building, its function may occur change, leading to the current load distribution is not consistent with the design, resulting in the strength of the building structure, rigidity not meet the requirements to use functional; suffer the ravages earthquakes, fires, floods, snow, wind and other natural disasters, resulting in different levels of the building structure damage; building long-term use, some construction materials aging, some of the common quality problems of expansion, which led to a decline bearing capacity of the structure and so on. These are caused by the building structure needs strengthening factor. Structural reinforcement Mingzhi reinforcement! 159-0066-1030 Rowe