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一些设有楼座的影剧院,由于楼层承重大梁的跨度较大(>15m),不得不在观众厅内布置1～2个立柱,给使用带来很大缺陷。如果采用悬挑结构,可不设立柱,但必须有相当深度的前厅,计算比较复杂。也可采用超静定结构,则可以不设前厅,不要立柱,但计算也很复杂。本文介绍的方案就是例子,在实际工程中采用过。本文将该方案的超静定结构梁系分析归纳成几个简单的计算公式。设计者只要具备单跨梁的基本知识即可迅速算出超静定梁系的内力,从而作
Some theatres with balconies have a large span (>15m) of floor beams and they have to arrange 1 to 2 columns in the auditorium. If a cantilevered structure is used, the column may not be set up, but it must have a fairly large depth of lobby and the calculation is complicated. The statically indeterminate structure can also be used, so it is not possible to set up an anteroom and not to erect columns, but the calculations are also very complicated. The scheme introduced in this article is an example and has been adopted in practical projects. In this paper, the statically indeterminate structural beam system analysis of this scheme is summarized into several simple calculation formulas. As long as the designer has the basic knowledge of a single span beam, the internal forces of the statically indeterminate beam system can be quickly calculated.