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宝钢烧结厂200m钢烟囱为塔架式集合型钢制双烟囱,由我国自行设计、制造和安装。该烟囱塔架部分横截面为四边形,底盘面积为50×50m,顶端为16×16m,塔高185m,钢结构总重为2530t,塔底用4组共96个地脚螺栓组成的固定架固定。设计要求每个固定架均应有15°6′20″的向心倾角,这就给现场安装地脚螺栓带来很大困难。为了保证安装精确度,本次施工中改变了过去的做法,采用预先组装地脚螺栓固定架,再安装到底盘上的方法,则在烟囱施工现场,就只需控制4组塔架固定架的中心误差,从而保证了安装精度,并缩短了工期。
The 200m steel chimney of Baosteel Sintering Plant is a tower assembled steel double chimney, which is designed, manufactured and installed by China. The cross-section of the chimney tower is quadrangular, with a chassis area of 50×50m, a top of 16×16m, a tower height of 185m, and a total steel structure weight of 2530t. The tower bottom is fixed with 4 sets of 96 anchor bolts. . The design requires that every fixed frame should have a 15°6′20′′ centripetal inclination, which will bring great difficulties to the installation of the anchor bolts in the field. In order to ensure the installation accuracy, this past construction has changed the past practice. With the method of pre-assembled anchor bolts and mounting on the chassis, in the chimney construction site, only the central error of the four tower mounts is controlled, thus ensuring the installation accuracy and shortening the construction period.