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梁向应力
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  hoop stress
     The present method is applied to stress analysis for a typical cylindrical arch dam, and the calculated results of the arch stress and hoop stress conform to those obtained by the trial load method. Therefore, the calculated results of the arch dam stress by the present method can be used for safety assessment of arch dams according to the national arch dam design code.
     对典型的圆筒拱坝用本文方法进行应力分析,得出的拱及梁向应力结果与试载法分析结果基本一致,表明用本文分析方法得出的应力结果可以按现行的拱坝设计规范规定的应力标准评价拱坝坝体安全度.
短句来源
  “梁向应力”译为未确定词的双语例句
     The equation for calculation is established based on the assumptions that the stress is linearly distributed in the arch-beam direction, the equivalent stress on the upstream and downstream surfaces are unknown variable and the constraint internal force in the cross section of arch or beam is given. The formulas for calculating other stress components at the upstream and downstream surface of the dam are deduced when boundary conditions are given.
     建立了拱梁向应力为直线分布时以上、下游面等效应力为未知量而拱或梁截面上的约束内力为已知量的求解方程,并根据常规的多拱梁应力分布假定及上、下游面已知应力边界条件,导出了上、下游面其余应力分量求解公式。
短句来源
     The numerical results of these two models are consistent with each other in terms of the following aspects: crest displacements and joints opening, frequency components of the dam structures, stress envelopment in arch and cantilever direction and the tendencies of stress redistribution caused by the joints opening.
     分别采用该模型与基于接触单元法的ADAP88模型模拟某拱坝的动力响应,两者得到了基本一致的规律:结点位移与横缝开度吻合良好,动位移与开度时程反映出相同的动力响应周期,二者都反映出横缝张开引起的拱向拉应力释放和梁向应力的增加。
短句来源
  相似匹配句对
     Analysis of Stress in Beams
     关于应力分析
短句来源
     Stress Analysis on Main girder
     大板应力分析
短句来源
     Stress Analysis of PC Box Girder under Three-Directional Prestresses
     考虑三应力效应的混凝土箱应力分析
短句来源
     Holo-photoelastic Method For Three-dimensional Stress Analysis
     三应力分析的全息光弹性法
短句来源
     (2)Horizontal isostatic differential stress;
     二是水平的均衡差应力
短句来源
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  hoop stress
The non-local elastic solutions yield a finite hoop stress at crack tips, thus allowing us to use the maximum stress as a fracture criterion.
      
A detailed inspection of stress distributions in the C/C rings revealed that a rotational imbalance inherent in C/Cs caused a high average hoop stress and stress concentration around the inner radius.
      
Based upon the above results, we analyse the hoop stress along the hyperbolic curve and the stress distributions on the planex2=0 for aluminium (cubic crystal).
      
The finite hoop stress at the crack tip depends on the crack length.
      
The non-local dynamic elastic solutions yield a finite hoop stress at the crack tip, thus allowing for a fracture criterion based on the maximum dynamic stress hypothesis.
      
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This is a preliminary study of the effect of vertical curvature on the cantilever and arch stresses in a double-curvature arch dam. A modification of the conventional method of crown cantilever is proposed with the consideration of the adjustment of vertical displacements, in additon to the radial displacements at the crown of arches. Results of the study indicate that, if the vertical curvature is properly chosen, tensional stresses in the crown cantilever of the dam can be reduced to a certain extent. Experimental...

This is a preliminary study of the effect of vertical curvature on the cantilever and arch stresses in a double-curvature arch dam. A modification of the conventional method of crown cantilever is proposed with the consideration of the adjustment of vertical displacements, in additon to the radial displacements at the crown of arches. Results of the study indicate that, if the vertical curvature is properly chosen, tensional stresses in the crown cantilever of the dam can be reduced to a certain extent. Experimental study had been made with the aid of gelatin models. Analysis of the results showed that, except in the vicinity of the top of the dam, the general trend of the distribution of arch and cantilever stresses agreed with that of computation within reasonable limits.

本文主要是关于双曲率拱垻垂直曲率对垻身应力影响的一个初步研究碚摲治龊褪则炇墙徊娼械摹T诶碚摲矫?提出了考虑垂直曲率影响的拱冠径向、垂直变位调整的計算方法。計算結果表明,如果垂直曲率选择适宜,对垻体应力的分布状态就能有所改善斫耗P驮囼灲Y果与計算数值相比,除坝顶附近外,拱、梁向应力分布趋势基本上是一致的。

The Xiaowan Arch Dam is the highest proposal arch dam in the world. The opening of transverse joint because of strong earthquake action is unfavorable to the safety of sealing and dam body. Whether the transverse joint reinforcement is adopted or not is an urgent subject to be solved in theory for the designer. For this reason, the non linear analysis model of dam with transverse joint reinforcement is applied to the analysis of earthquake response of the Xiaowan Arch dam with transverse joint reinforcement....

The Xiaowan Arch Dam is the highest proposal arch dam in the world. The opening of transverse joint because of strong earthquake action is unfavorable to the safety of sealing and dam body. Whether the transverse joint reinforcement is adopted or not is an urgent subject to be solved in theory for the designer. For this reason, the non linear analysis model of dam with transverse joint reinforcement is applied to the analysis of earthquake response of the Xiaowan Arch dam with transverse joint reinforcement. The calculation results showed the transverse joint reinforcement can obviously control the opening of the transverse joints of arch dam, increase the integrity of arch dam and reduce the worsening of beam stresses caused by the opening of transverse joint to a certain degree. It is necessary to arrange proper vertical steel bars in order to avoid the cracks along beam direction.

小湾拱坝是待建的世界上最高的拱坝 ,由于强震作用下横缝张开对止水和坝体安全不利 ,是否采取横缝配筋的抗震加固措施是设计者迫切需要从理论上解决的问题。为此 ,首次将考虑横缝配筋的拱坝非线性分析模型应用于小湾拱坝横缝配筋的地震反应分析 ,计算结果表明 ,横向配筋可以显著控制拱坝横缝张开度、加强拱坝整体性并一定程度减缓由于横缝张开导致的梁向应力恶化的程度 ,但为防止梁向开裂 ,配置适量竖向钢筋仍属必要

To estimate the resistant effect of reinforcing steel across contraction joints on the aseismic responses of high arch dams, a nonlinear numerical analysis of contraction joint elements with reinforcements was developed to study the control of contraction joint openings to optimize the strength and flexibility. The Big Tujunga Dam was analyzed to verify the rationality of the model. The results demonstrate that with proper reinforcements, the joint opening can be controlled to some extent and the stresses can...

To estimate the resistant effect of reinforcing steel across contraction joints on the aseismic responses of high arch dams, a nonlinear numerical analysis of contraction joint elements with reinforcements was developed to study the control of contraction joint openings to optimize the strength and flexibility. The Big Tujunga Dam was analyzed to verify the rationality of the model. The results demonstrate that with proper reinforcements, the joint opening can be controlled to some extent and the stresses can be redistributed between the arch and the cantilever components, which will enhance the aseismic safety of arch dams.

研究了高拱坝横向配筋对于拱坝的抗震加固作用。根据横缝配筋的非线性本构关系,并依据刚度准则和强度准则建立了相应的计算模型,通过对实际工程BigTujunga拱坝的应用,初步验证了模型的合理性。计算结果表明:拱坝横向配筋可以显著控制横缝张开、加强拱坝整体性并一定程度减缓由于应力重分布导致的梁向应力恶化的程度,对提高拱坝抗震安全性是有利的。

 
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