The program system DDDU for actual design of engineering structures composed of bar, diaphragm, beam, shell, etc. is introduced.
本文介绍了对由杆、膜、梁、板壳单元组成的工程结构可进行实际设计的程序系统DDDU。
The combined structures which are made of bar, beam, membrane, plate and shell elements are used broadly in engineering.
杆、梁、膜以及板壳等多单元组合结构被广泛地应用到工程实际当中。
Many experimental results indicates, beam bar slippage within joints is a frequent local nonlinear response of reinforced concrete structures under the rare earthquakes.
大量试验结果表明，在罕遇地震作用下节点核心区内梁纵筋的粘结滑移是钢筋混凝土结构的一种比较常见的局部非线性反应。
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