25-10-2023 дата публикации
Номер: ZA202304267B
Provided is an adaptive control device for lifting a bridge-subgrade approach slab, comprises a joint approach slab, an X-shaped support device, pull cords, bolts and a protective box, the X-support device is disposed in the middle of the inner cavity of the protective box; the upper and lower rod ends of the support rods are connected to sliders, the joint approach slab and the inner bottom of the protective box are provided with corresponding chutes, the sliders at the upper rod ends of the support rods and the sliders at the lower rod ends of the support rods are positioned within the chutes of the joint approach slab and the bottom of the protective box respectively; one end of the pull cord is attached to the upper portion of the support rod, the other end of the pull cord is attached to the bolt, the joint approach slab is provided with pull cord holes, the pull cords go into the pull cord holes. The disclosure realizes the elevation adjustability of the approach slab by adjusting and controlling the opening or closing of the X-shaped support device, improving the adaptive ability to the sinking deformation of the foundation, ensuring the smooth transition of the connection between the approach slab and the pavement, avoiding the vehicle bumping at the bridge head, providing the advantages of long overall service life, high safety, small deformation, adaptive adjustability of height differences, less construction materials, and ease of construction and maintenance.
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