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。
The Beam String Structures(BSS), using bar connecting arches and cables, is a new type of long-span structures.
张弦梁结构是通过撑杆连接上弦抗弯受压刚性构件和下弦高强度拉索而形成的一类新型大跨度结构体系。
The periodic bar and beam structures are modeled as one-dimensional periodic wave-guides and the expression of transfer matrix of elastic waves is derived.
将周期杆梁结构看成一维周期波导，推导了结构中弹性波传递矩阵的表达式。
The periodic bar and beam structures are modeled as one-dimensional periodic wave-guides and the expression of transfer matrix of elastic waves is derived.
将周期杆梁结构看成一维周期波导，推导了结构中弹性波传递矩阵的表达式。
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