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日本是个多地震国家,为防震、抗震曾研究出了许多办法。其中由日本清水建设会社最近研究出的用水筒盛水置于屋顶制震,收到良好效果。日本横滨有座高塔,高105m,建造在海上。塔顶有灯台室(指向标室),室下方有瞭望台,可供游客瞭望。以1987年10月的19号台风为例,当时的风力达10～12级,塔顶相当于受到里氏2级地震的作用而摇摆,最大幅度达1.3cm,周期为1.8s。当时在瞭望台上的游客惊慌失措,有的人竞趴在了
Japan is a multi-seismic country and many methods have been developed for earthquake prevention and earthquake resistance. Among them, the use of a water bottle containing water recently researched by the Japan Shimizu Construction Co., Ltd. placed the roof on the earthquake and received good results. Yokohama, Japan has a tall tower, 105m high, built on the sea. There is a light table room (pointing room) at the top of the tower and an observation deck below the room for visitors to look around. Taking typhoon No. 19 in October 1987 as an example, the wind power was 10 to 12 at that time, and the top of the tower was equivalent to being rocked by the action of a Richter 2 earthquake, with a maximum amplitude of 1.3 cm and a period of 1.8 s. Tourists on the watchtower panicked at the time, and some people competed for it.