1) bridge joint
桥梁节点
1.
The performance of a bridge joint interacted with a pier and a crossbeam with the representative formation in China under outside force was studied, as well as the factors influenced the ultimate strength, based on the philosophy of capacity design.
在此基础上,针对我国公路桥梁结构的特点,结合实际工程项目,对具有典型桥梁节点构造形式的框架结构进行受力分析。
2) segmental box girder bridge
节段箱梁桥
3) beam-column joints
梁柱节点
1.
Analysis of ratio of axial compressive force to resisting shear strength of reinforced concrete beam-column joints;
轴压比对梁柱节点抗剪强度影响的分析
2.
Research into fracture of steel frame beam-column joints;
钢框架梁柱节点断裂研究
3.
The influence factor to the ultimate bearing capacity of concrete beam-column joints with placed ducts under axes-pressure;
轴心受压状态下有孔道混凝土梁柱节点的承载力的影响因素
4) beam-column connection
梁柱节点
1.
The seismic resistant design method of reinforced concrete beam-column connections based on compression strut and softened truss models;
基于压杆和软化桁架模型的钢砼梁柱节点抗震设计方法
2.
Therefore, the study on the behavior of the beam-column connections to improve ductility as well as to prevent brittle failure was carried out in this research.
钢框架梁柱节点的连接性能研究引起国内外的广泛关注,尤其是通过改善节点的变形性能从而提高结构的延性已成为钢结构研究的焦点。
3.
Three-dimensional finite element method was employed toinvestigate the effect of the strength mismatching of the groove heamflange welds on the fracture toughness requirements in terms of crack tipopening displacement in welded beam-column connections, which pro-vides valuable suggestions for the design of beam-column connections andselecting welding materials.
通过三维弹塑性有限元分析 ,采用裂纹张开位移CTOD作为断裂韧度参量 ,研究了梁柱节点梁翼缘焊缝强度匹配对其断裂韧度要求的影响 ,从而为梁柱节点的设计以及焊接材料的选择提供一定的依据。
5) beam-column joint
梁柱节点
1.
Load capacity and stiffness of beam-column joint strengthened by plate rings with irregularly arranged double level beams;
双层不规则布置梁加强环式梁柱节点承载力及刚度
2.
Studies on shear performance of reinforced concrete beam-column joint strengthened by a new method with two-dimensional finite element analysis;
节点加强后钢筋混凝土梁柱节点剪切性能的二维有限元分析
3.
Studies on failure mechanism of reinforced concrete beam-column joints using three-dimensional finite element method;
应用三维有限元法探讨RC梁柱节点的破坏机理
6) ring beam joint
环梁节点
1.
In this paper,through direct shear tests on 3 steel tube confined concrete column ring beam joints with shear ring,the ultimate capacity,the mechanical mechanism,the sliding of ring beam relative to steel tube and the ultimate failure mode of ring beam were analyzed.
通过3个带抗剪环的钢管混凝土柱环梁节点单调直剪试验,对设置抗剪环环梁的极限直剪承载能力、环梁的宏观受力表现、受力过程中环梁相对钢管的滑移以及环梁的最终破坏形态等进行了分析研究。
2.
In this article,authors introduce a new steel pipe concrete ring beam joint,and compare its advantages and disadvantages with those of joints listed in current steel pipe column standard,and state some aspects of this joint such as structures,construction methods and its project application situation.
介绍一种新型钢管混凝土环梁节点 ,将这种节点与现行钢管柱规程中节点进行优缺点比较 ,并介绍了这种节点的各种构造与施工方法及工程应用情况。
3.
The joint,called ring beam joint,has been used in the project of Cui?hu Villa in Guangzhou.
广州市翠湖山庄工程采用了新型钢管混凝土环梁节点 ,并进行了足尺构件静载试验。
补充资料:电力网节点编号优化
电力网节点编号优化
network nodes order optimization
d旧nl!wong Jled一anb旧nhoo youhuo电力网节点编号优化(network nodes order。Ptimization)用稀疏矩阵技术求解电力系统网络方程时,为了节省计算机内存和加快计算速度,按照一定规则编排电力网各个节点次序。 在电力系统计算中,网络方程通常采用导纳矩阵方程的形式,它的求解多采用高斯消去法和直接三角分解等(见网络方程求解方法)。导纳矩阵是零元素很多的稀硫矩阵,对它进行消元或三角分解后所得的三角矩阵,要增加一些称为注人元的非零元素。为节约计算机内存及避免对零元素的不必要运算,在计算机中一般只贮存三角矩阵中的非零元素.因此,三角矩阵中非零元素的个数,直接影响计算机内存的需要量及程序计算速度.导纳矩阵非零元素的分布直接影响消元或分解后三角矩阵非零元素的数目.而网络节点编号次序又与导纳矩阵非零元素的分布密切相关(见图1),因此,电力网节点编号优化是求解网络方程前的一项重要工作。┌─────┬────┬─────────┬────┐│节点.号.形│导纳矩阵│消元或分解后三角阵│注入元致│├─────┼────┼─────────┼────┤│么 │麟 │魏 │弓 ││21月 │ │ │ │├─────┼────┼─────────┼────┤│上 │瀚 │魏 │l │├─────┼────┼─────────┼────┤│。~主钩 │麟 │继 │(j │└─────┴────┴─────────┴────┘ 图1节点编号对注入元的影响 ·一非零元素;X一非零注入元紊 节点编号的最优化是寻求一种使注人元素数目最少的节点编号方案.对n个节点的电力网来说,其节点编号方案可以有川种,选最优的工作量将非常大.因此,在实际中往往采取一些简化的方法对节点编号进行优化,并不一定追求“最优”。 根据消元的计算公式或星形一三角形变换规则(见图2),每消去一个节点i,新增加的元素数为八一冬Ji(J‘一,)一及 ‘(1) l、、一一洲声图2消去节点1网络变化示意图式中J‘为在消去节点i时节点i的出线数;及为在消去节点i时与节点i有连线的各节点之间已有的连线数.常用的一些节点编号优化方案,大都根据式(1)或对其作一些简化得到的,主要可分以下三类。 (l)静态按最少出线数编号。对式(1)略去八项,视去为常数,即不考虑消去前面节点对节点i的出线数的影响,因此,也称静态优化法。该方法简单、快速、应用极为普遍。 (2)动态按最少出线数编号。对式(1)略去八项,但考虑Ji的变化,即考虑消去前面节点对节点i的出线数的影响,因此,也称半动态优化法。 (3)动态按增加出线数最少编号.对式(1)考虑及项和J‘的变化,即动态按增加出线数最少的原则编号,也称动态优化法。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条