Combing the construction mechanics and the control of the initial length of cables,this paper proposed a calculation method for the accumulative sliding construction of pretensioned reticulated structures.
将施工力学与控制索原长法相结合,提出了预应力网壳结构累积滑移施工中的计算方法。
Global optimization for prestressed U-thin-shell structure;
预应力U型薄壁结构整体结构优化
A variety of factors,such as cable loosen,would make prestressed structures work in error state,which will influence the function of structures.
预应力结构在使用过程中由于索松弛等原因导致结构处于误差状态,影响结构的正常使用。
The phylogeny and the tendency of the prestressed structures are analysed in this paper, and the function and status of prestressed cables are also immulated, the classification performance and state-of arts of prestressed cables are summarized and the importance of the research for linear expansion factor of the cables is proposed in this paper.
分析了预应力结构的发展历史和趋势,阐明了预应力索在现代预应力结构体系中的作用和地位,总结了预应力索的分类、性能及国内外对索的研究现状,提出了索的线性膨胀系数研究的重要性,并对利用拉索对结构施加预应力的主要方法(拉索法和支座位移法)进行了总结分析。
In this paper ths cables in prestressed structures are treated as two-node elements.
本文将预应力结构中的张拉索处理为具有两个铰接节点的索单元,导出了索单元中总分布荷载的表达式和索的大位移增量刚度矩阵以及索元的一致质量矩阵,基于虚功原理建立了索元的静动力非线性平衡方程。
Based on the bond and failure mechanism of the pre-stressed structure and the material parameter depression in the temperature field under fire,this paper analyzed the mechanical behavior of the pre-stressed hollow slab by the non-linear finite element method,and obtained the pre-stressed steel strand stress relaxation under the high temperature.
依据预应力结构的粘结与破坏机理,在火灾温度场下,考虑高温区域内板梁材料参数的降低,采用非线性有限元的方法分析板梁的受力性能,得出高温下预应力钢绞线的应力松弛程度,并在合理假定条件下研究钢绞线随局部失效长度的变化,以及整根钢绞线发生粘结滑移情况,为桥梁的检测评定以及维修加固提供理论依据。
Multi-dimensional Earthquake Response of Large-span Prestressed Lattice Shell Structure;
大跨度预应力网壳结构的多维地震反应分析
The Analysis of Dynamic Stability of Double-layer Reticular Prestressed Latticed Shell Which under Earthquakes;
双层预应力网壳结构在地震作用下的动力稳定性分析
METHOD OF CABLE FORCE CONTROL DURING ACCUMULATIVE SLIDING CONSTRUCTION FOR PRETENSIONED RETICULATED STRUCTURES
预应力网壳结构累积滑移施工索力控制算法研究
Analysis and Research on Spherical Surface Latticed Shell Assembled with Self-Balanced Prestressed Cable and Strut Elements;
自平衡预应力索杆球面网壳结构的分析与研究
Study on Cable Prestress for Large-scale Reticulated Shell Structure
张弦双层网壳结构环向拉索预应力研究
Investigation on Static and Stabilization for Pretension Lattice Shell Structure of Two-layer Cylindroids;
拉索预应力双层柱面网壳结构的静力及稳定研究
Application study on cable prestress design for large-scale reticulated shell structure
张弦式网壳结构中的拉索预应力值设计方法的应用研究
Study on Earthquake Response of Long-span Prestressed Conic Arch Shell Steel Roof;
大跨锥面拱壳预应力钢屋盖结构地震反应分析
Dynamic response of a large-space cylindrical reticulated shell under blast loading
大空间柱面网壳结构在爆炸荷载下的动力响应
ANALYSIS OF DYNAMIC PROPERTY AND EARTHQUAKE RESPONSES OF LONG-SPAN LATTICE SHELL ROOF STRUCTURE
大跨度网壳屋盖结构动力特性及地震反应分析
Research on the Mechanical Behaviors of Prestressed Arch-supported Double-layer Reticulated Shell Structures;
预应力拱支双层网壳的静力性能研究
Designing and Application of Pretensioned Space Lattice Structure;
拉索预应力空间网格结构的设计与应用
Application of Prestressing Technology for Strengthening Space Truss Structure
预应力技术在网架结构加固工程中的应用
Application of mixing variable genetic algorithm in prestressed space lattice work
混合变量遗传算法在预应力网架结构中的应用
Analysis on Stability Ultimate Bearing Capacity of Plate-cone Reticulated Shell;
板锥网壳结构的稳定极限承载力分析
QR-Method for Geometrically Non-Linear Dynamic Analysis of Network Shell Structure;
网壳结构几何非线性动力分析QR法
Study on Static and Dynamic Performance of Orthogonal Vierendeel Latticed Shells;
正交空腹网壳结构的静、动力性能研究
Study on Static and Dynamic Performance of Hyperboloid Vierendeel Latticed Flat Shell
双曲空腹扁网壳结构静、动力特性研究