Prestressed anchor cable is a technology used to enhance the bearing capacity and stability of structures, especially in the fields of foundation pit support, Bridges, high-rise buildings and other engineering applications. The following are the main advantages of prestressed anchor cables:
Wide range of application: Prestressed anchor cable support technology is suitable for a variety of geological conditions and engineering environment, and occupies a small area, the overall structure is light, and has little impact on underground building construction and deep foundation pit excavation.
Improve construction efficiency: the prestressed anchor cable does not need the pit foundation support, which can increase the operating area of the construction site, facilitate the excavation of the foundation pit, reduce the engineering amount and shorten the construction period.
Reduce construction costs: Prestressed anchor cables use the strength of the soil itself to build a stress system together with maintenance structures such as dug piles and bored piles, improve the stress structure, reduce the input of engineering materials and equipment, and save construction costs.
Increased safety: The prestressed anchor cable can strengthen the surrounding soil through high pressure rotary jet pile, and increase the high anchoring force when the aperture exceeds a certain size, reducing the risk of quicksand and water leakage.
Regarding the hardness of prestressed anchor cables, it is first necessary to make it clear that the hardness of prestressed anchor cables is related to the materials used, the manufacturing process and the design requirements. The prestressed anchor cable is mainly made of prestressed steel strand or steel bar, and its hardness needs to meet certain standards to ensure that it can withstand the expected tension and shear force during use.
In the ASTM standard, the Rockwell hardness (HRC) of prestressed anchors (members used to hold prestressed anchor cables) shall meet the hardness requirements of HRC35 to HRC55. At the same time, the hardness depth of the prestressed anchor shall meet the requirements of the depth of 0.06 inches (1.5 mm). Domestic standards also refer to ASTM standards, which vary according to different types of anchors.
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