Other

Fujitsu Corporation

Kiyoshi Nakamura

Hiroshi Murakami

Kenji Sekiguchi

Noboru Wakatsuki

Kazuyuki Nakamura

Sadao Suzuki

Isao Kojima

Toshio Yamashita

Masuji Sato

Yoshimasa Tsuchiya

Yasuyoshi Shimazaki

Fumio Fujita

Yoichiro Takeuchi

Nobuaki Miura

Yoshinori Adachi

The present invention is provided for considerably shortening the construction time of a building that is applied to nuclear power plants. When constructing the building, megablocks having a height that extends to a plurality of floors are produced, and together with combining those megablocks, concrete is poured inside them to form a wall member composed of a megawall structure of steel plate reinforced concrete construction. Alternatively, in addition to the wall megablocks, floor megablocks for forming the floor member of the building are used, and together with combining those megablocks, concrete is poured inside or above them to form a structural member (wall member and floor member) composed of a megawall structure of steel plate reinforced concrete construction.

Building and construction method therefor

A piezoelectric transformer includes a substrate of piezoelectric material, preferably a single crystal of LiNbO.sub.3. The substrate is uniformly polarized in a selected direction thereof and vibrated in a direction of the length thereof. An input voltage is applied across both sides of a portion of the substrate in a direction of the thickness thereof and thus excites a vibration by way of piezoelectric effect. Thereby another voltage is caused in the direction of the thickness of the substrate in a portion other than the portion to which the input voltage is applied, and taken out as an output voltage. As a result, it is possible to decrease the output impedance to obtain a large load current and thus fully heighten a step-up ratio of the piezoelectric transformer.

Piezoelectric transformer using single crystal of LiNbO.sub.3

Growing community of inventors

Minaminakayama, Izumi-ku, Sendai-shi, Miyagi 981-32, Japan

Kiyoshi Nakamura