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根据普通橡胶坝设计的基本原理,结合约束形式的特点,本篇提出橡胶活动围堰的分析与设计。首先,确立稳定是活动围堰分析的前提。并对围堰的静定性,作出肯定的结论。在求解未知力时,利用了不定式。从无数解中,找出符合经济原则的合理解。对于围堰断面的设计,含有较多的变化因素。在坦布和堰袋曲线段两侧水头差不变的假设下,问题得到了简化。在实际设计中,建议采用试算法,并举实例说明。
According to the basic principle of ordinary rubber dam design, combined with the characteristics of the constraint form, this paper presents the analysis and design of rubber cofferdam. First, establishing stability is a prerequisite for the analysis of the activity cofferdam. And to the cofferdam static character, make the affirmative conclusion. In solving unknown forces, the use of infinitives. From innumerable solutions, find a reasonable solution to the economic principle. For the cofferdam section design, contains more changes. The problem is simplified on the assumption that the water head remains constant on both sides of the tangential and weir-bag curves. In the actual design, it is recommended to use trial method, and give an example to illustrate.