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高跨
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  depth to span
     When the ratio of depth to span is less than 1∶3, the instability mode of the portal frame is associated with the ratio of depth to span?
     当刚架高跨比小于1∶3时,刚架的失稳模式同刚架高跨比、梁柱线刚度比均有关系。
短句来源
     IN-PLANE STABILITY PERFORMANCE OF PORTAL FRAME STRUCTURES WITH DIFFERENT RATIO OF DEPTH TO SPAN
     不同高跨比门式刚架平面内稳定性研究
短句来源
     In order to discuss the in-plane stability of the steel portal frames with different ratio of depth to span which is subjected to roof uniform loading,the ANSYS finite element program is used to perform geometrically nonlinear analysis.
     应用ANSYS有限元程序,在均布荷载作用下,对不同高跨比的门式刚架进行了弹性几何非线性分析。
短句来源
     It is indicated that apart from stiffness factor of beam to column,the ratio of depth to span and slop of roof greatly affect the stability performance of the portal frame under roof uniform loading.
     研究表明,在均布荷载作用下,除了梁柱线刚度比,刚架高跨比及屋顶坡度对刚架的稳定性能影响很大。
短句来源
     It is indicated that when the ratio of depth to span is equal to or larger than 1∶3, the instability mode is sides-away buckling, and the main moment and axial force in the beam have a negligible effect on stability of the portal frame?
     分析表明,当刚架高跨比大于等于1∶3时,刚架失稳模式为侧移失稳,可忽略梁中主弯矩和梁轴力对刚架稳定性的影响;
短句来源
  span to height
     The deflection results exerted static loading and theory calculations are checked bythe experimentation of total 8 steel - concrete composite simply supported beams with U - shape section, and the affections about different ratio of span to height, the thickness of steel plate, concrete strength are analysed in this paper.
     通过对8根U型截面钢-混凝土组合简支梁在静力荷载作用下的受弯试验,探讨U型截面钢-混凝 土组合梁挠度理论计算与试验结果的吻合,并分析不同高跨比、钢板厚度和混凝土强度对挠度的影响.
短句来源
  “高跨”译为未确定词的双语例句
     (3) The rational aspect ratio of the truss is about 1/5;
     (3)合理的桁架高跨比在1/5左右;
短句来源
     The width-span ratio is 1/30, depth-span ratio is 1/80 in the arch rib of model 1 and its failure is destabilization inside the face, while in the arch rib of model 2, the width-span ratio is 1/60, depth-span ratio is 1/40 and it shows the side-tipping failure.
     模型1拱肋宽跨比为1/30,高跨比为1/80,结构失效表现为面内失稳,模型2拱肋宽跨比为1/60,高跨比为1/40,结构表现为侧倾失稳。
短句来源
     Through the nonlinear finite element method analysis under vertical load, the stress distribution and the influence of span-to-span ratio of the wall beam, height-to-span ratio of the trimmer beam, and the opening in the wall, are simulated.
     通过竖向荷载作用下的非线性有限元分析,较为真实地模拟了框支密肋壁板结构墙梁的应力分布,以及墙梁跨长比、托梁高跨比、墙体开洞等因素对其应力分布的影响。
短句来源
     After formwork dismantling,the structure is shaped to inverted arch with stored stress and deflection,and concrete crack meets the code requirement,resolving the deformation and crack problems of concrete beams with height-to-span ratio of 1/23.
     拆模后结构出现了反拱,存储了应力和挠度,混凝土裂缝符合规范要求,解决了高跨比达到1/23的混凝土梁的变形和裂缝问题。
短句来源
     However, because the ratio of height and span of double-arch tunnel is very small, its structure, design and construction are more complicated.
     然而由于联拱隧道的高跨比很小,其受力结构复杂,设计要求高,施工难度大,且对施工工艺方法与程序有严格要求。
短句来源
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  span to height
Only enlarged arm span to height ratio and highly arched palate.
      


By using V. Pane's component theory and the variation principle, this paper studies the vibration of the orthotropic moderate thick plates. Taking the product of the beam vibration functions as the expression of the vibration mode of the plate. We obtain the differential equation of motion and the corresponding boundary conditions for some orthotropic moderate thick ractangular plates (H=(D_xD_y)~(1/2)·(G_(xz)/G_(yz))=(D_x)~(1/2)/(D_y)~(1/2) meanwhile, the formulae for the natural frequency and the vibration...

By using V. Pane's component theory and the variation principle, this paper studies the vibration of the orthotropic moderate thick plates. Taking the product of the beam vibration functions as the expression of the vibration mode of the plate. We obtain the differential equation of motion and the corresponding boundary conditions for some orthotropic moderate thick ractangular plates (H=(D_xD_y)~(1/2)·(G_(xz)/G_(yz))=(D_x)~(1/2)/(D_y)~(1/2) meanwhile, the formulae for the natural frequency and the vibration mode of the moderate thick rectangular plates are obtained, which may be conveniently used for engineering purposes.By reducing to the isotropie moderate thick rectangular plates with different thickness-span ratios and different supporting conditions, the results of calculated natural frequencies were compared with those obtained by the other papers, It can be seen that the results given by this paper may satisfy engineering requirements.

本文应用V·Panc~[1]的分量理论和能量变分原理作为分析基础,引入梁振动函数乘积和的形式来表达板的振型,建立了适于某些正交各向异性中厚板(H=(D_xD_y)~1/2·(G_(xz)/G_(yz))/((D_x)~(1/2))/((D_y)~(1/2))的振动微分方程,以及相应的边界条件:求得了便于工程中应用的正交各向异性中厚板的固有频率计算公式,以及振型计算公式。通过退化为各同性的四边简支、四边固支、两邻边简支、另二邻边固支的中厚板在若干种高跨比下固有频率的计算,且与有关文献中计算结果的比较,说明本文的计算结果可以满足工程中的要求。

In this paper, a dynamic response of elastic-plastic thick plates is analysed by using known elastic solutions. Formulas have been derived here in detail for analyzing the dynamic response of simply supported rectangular thick plates subjected to a uniform step load. The general purpose program for the digital computer is also worked out. Detailed computations are performed for the square plates of various height span ratios. The results essentially consistent with those obtained from the finite element method....

In this paper, a dynamic response of elastic-plastic thick plates is analysed by using known elastic solutions. Formulas have been derived here in detail for analyzing the dynamic response of simply supported rectangular thick plates subjected to a uniform step load. The general purpose program for the digital computer is also worked out. Detailed computations are performed for the square plates of various height span ratios. The results essentially consistent with those obtained from the finite element method. The method presented in this paper may be extended to the thick plates with more complex boundary.

本文利用已知弹性解进行了弹塑性厚板的动力分析。对均布阶跃荷载作用下四边铰支矩形厚板的弹塑性动力响应,推出了具体算式,并编制了通用程序。对不同高跨比的正方形板进行了具体运算,所得的结论与有限元法所得的基本符合。本文的方法可以推广到具有较为复杂边界的厚板。

In this paper we would discuss the relation between the low-frequency noise in JFET and the topological design, the quality of the substrates etc.Some design principles of JFET are given here. With the topology designed accor- ding to these principles and some new fabrication technology, the excellent low- noise high transconductance JFES 3DJ415 is produced. The noise performance of this device has been tested and measured, and compared with some popular devices.

本文讨论了JFET低频噪声与图形结构、材料质量等的关系,提出几点设计原则.用设计的管芯图形.配合一些新工艺技术,可研制成具有优异特性的低频低噪声高跨导JFET3DJ415.测量了该器件的噪声性能,并与通用器件作了比较.

 
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