平面桁架是一种自然离散化的杆系结构。
介绍了一种平面杆系结构自由振动的解析解法。
The analytic method for the free vibration of plane frame structure is presented.
本文针对复杂杆系结构提出一种超级有限条的分析方法。
A super finite strip method for complex rod-systems has doveloped in this paper.
提出移动荷载作用下杆系结构内力包络图的精确计算方法。
An exact method for computation of envelopes of various internal forces of skeletal structures under moving loads is developed.
研究了随机杆系结构在随机荷载作用下的随机优化设计问题。
The stochastic optimization method for skeletal structures with random parameters under random loads action is studied.
在杆系结构可靠性分析中，求取临界失效模式是一个主要课题。
In the structural reliability analysis of frames, it is a primary subject to identify the critical failure modes.
TPM手控器属于杆系结构，设计原则为重量轻、强度精度高。
The TPM is truss system structure, the design principle is light weight and high dynamic accuracy.
该方案包括整体优化策略和空间杆系结构优化设计等两个方面。
The scheme includes the two aspects: the study on the whole optimization and the space trusses optimization.
本文引入了杆系结构的回弹反耦联系统和回弹反耦联方程的概念。
The conceptions of springback anti-coupled systems and equations of the structures of bar systems are introduced in this paper.
以柔度法原理为基础对一空间杆系结构的损伤识别作了详细分析。
By the principles of compliance method, there are detailed analysis of the damage identification of a Structure in space.
该方法能直接应用到大型复杂杆系结构的几何非线性问题的求解中。
This method can be applied to the solution of geometrically nonlinear problems for complicated structures.
用该算法求解杆系结构可不必确定基本结构，且能获得稳定的数值解。
It is possible in this new algorithm to deal with space frames without firstly delineating the basic determinate structure and the ensuing numerical computation is rather stable.
本文进一步对铰接杆系结构撤除杆件后的几何稳定性问题进行了讨论。
Furthermore, this thesis carries out some discussions about the geometrical stability of the pin-bar assemblies after removing some bars.
本文使用递减梯度和基变换技术的惩罚线性规划求解杆系结构的极限载荷。
In present paper we use a penalty linear programming method using Reduced Gradient Basis-Exchange Techniques to find the limit load of structures of beam systems.
推导了铰接杆系结构切线刚度矩阵较为简便的计算生成过程，便于在编程中实现。
Numerical calculation process to obtain the tangent stiffness matrix of structure is deduced and geometric stability of different types of structures are analyzed.
利用自应力矩阵的特性，提出并证明了一种快速识别杆系结构中“必需杆”的方法。
By utilizing the properties of self-stress matrix, a technique for quickly distinguishing "necessary bars" is proposed.
特别对于较复杂的杆系结构的稳定性问题效果尤其明显，丰富了压杆稳定性研究的内容。
This method was particularly obvious for more complex structures, it also could abundant the studying content of member in compression stability.
结合平面杆系结构分析的实例，探讨了面向对象方法在建筑结构分析程序设计中的应用。
A practical example of application of the object-oriented method in plane rod system structure is given.
对于空间杆系结构，认为其杆件只承受轴向应力，因此，由节点位移可得出各杆件应变。
The strains of all elements could be obtained by the displacements of all nodes owing to axial stress was predominant, and the relationship can be expresses by a transition matrix.
针对结构动力失稳的判定问题，提出了一种适用于杆系结构动力稳定分析的应力变化率法。
Considering the judgment of dynamic instability of truss structures, a stress rate method for dynamic instability analysis of truss structures was proposed.
文章将应用于弹性杆系结构动态响应的回传波射矩阵法扩展应用于粘弹性框架的瞬态问题的求解。
The reverberation ray matrix method for analyzing dynamic response of elastic trusses or frames is extended and used to solve the transient response of frames made of viscoelastic bars.
由于此类结构形式的复杂性，目前对于非杆系结构极限状态的确定及其设计方法尚没有统一的认识。
Since the complexity of this kind of structure types, the research on the design methods of the structures is still immature.
文中的分析方法和过程可用于平面折杆系结构的分析，可以推广应用于空间曲、折杆系结构的分析。
The method and procedure can be used to analyse the flexed bar system of the plane and space.
构建了区间参数杆系结构在区间荷载作用下的分析模型，导出了结构的区间位移和区间应力响应区间变量表达式。
The finite element analysis of truss system with interval parameters under interval load is studied and the structural interval displacement and stress response are deduced.
本文采用杆系有限元方法，研究了桥墩结构在地震和冰荷载作用下的响应问题。
In this paper, the responses of bridge structure to earthquake and ice loads are studied.
本文根据汽车车架结构的特点，应用薄壁杆系有限单元法，对汽车车架的固有频率和主振型进行了计算。
This paper gave the computer simulation of natural frequencies and vibrational modes of truck frames, based on the structural features of the frame, by finite element method of thin wall rod system.
因此，采用三维杆系有限元模型对隔震结构进行整体分析具有重要的现实意义。
So it is practically important to carry on the study on the whole structure of 3d FEM model.
采用平面杆系单元进行结构的承载力检算，采用3D实体单元进行梁体荷载响应模拟。
Plane linkage element is used to calculate bearing capacity of the structure, and 3D solid element is used to simulate response of the beam to load.
介绍了上承式系杆拱的结构特点以及施工工艺，为同类型桥梁设计与施工起参考作用。
This paper introduces the structural characteristics and construction technologies of deck tied arch bridges, which are expexted to be useful for design and construction of the similar bridges.
介绍了上承式系杆拱的结构特点以及施工工艺，为同类型桥梁设计与施工起参考作用。
This paper introduces the structural characteristics and construction technologies of deck tied arch bridges, which are expexted to be useful for design and construction of the similar bridges.
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