Sliding seismic isolation device

A sliding seismic isolation device comprising:

• a structure fixation plate having a first sliding surface;
• a metallic slider having a second sliding surface contacting the first sliding surface, and
• a friction member composed of a single-layer fabric, the friction member being attached to the first sliding surface, the second sliding surface, or both of the first sliding surface and the second sliding surface on an attachment side of the friction member,
• wherein one of a warp and a weft is formed of a plurality of plied yarns into which high-strength fibers and PTFE fibers are twisted together and the other of the warp and the weft is formed of a plurality of high-strength fibers in the single-layer fabric,
• the single-layer fabric has a twill weave and is woven such that the plied yarns of the one of the warp and the weft are exposed more than the high-strength fibers of the other of the warp and the weft, at a surface of the friction member opposite from the attachment side of the friction member,
• a ratio by weight of the PTFE fibers to the single-layer fabric is 70% or less, and
• the high-strength fibers of each of the warp and the weft are liquid crystal polyester fibers.