| ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ KAWASAKI STEEL TECHNICAL REPORT No.21 ( November 1989 ) Civil and Architectural Engineering ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ |
| Fabrication and Erection Techniques for Extra-Heavy Steel High-Rise Structure, Shenzhen Development Center, China Masamitsu Nagayasu, Katsuya Ohta, Kohzo Akahide, Takayuki Hineno, Takayuki Kohzuki, Masayuki Takai |
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Synopsis : Heavy steel members up to 130-mm thick were used for a highrise building called "Shenzhen Development Center" constructed in China. As it was made necessary to apply high welding techniques to the fabrication and field welding of such heavy steels, weld experiments were performed and the results were applied to the construction of this project. The results obtained are as follows: (1) Newly developed one-pass method of two-electrode, consumable-nozzle electro-slag (CES) welding was adopted to the fabrication of girder-to-column connection of the box-section columns, so as to shorten the fabrication period. (2) Before starting the erection work, welding procedure tests using real-size models of field connections were performed in order to secure the erection accuracy and to establish such welding procedure specifications for obtaining sound site welding. (2) Thus, without any trouble, all steel works were smoothly completed in May 1987. |
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