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设计载荷作用
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  permissible loading
     This paper analyses the geometric nonlinearity of JJ315/43-A derrick under the permissible loading and presents the conception of nonlinear influence degree, with which we can determine what degree geometric nonlinearity influences on the parameters of derrick loading.
     文章对JJ315 43 A型井架在设计载荷作用下进行了几何非线性分析,提出非线性影响度的概念,通过分析非线性影响度来确定几何非线性对井架承载各参数的影响。
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  “设计载荷作用”译为未确定词的双语例句
     This kind of surface may be reflector either distorted by manufacturing or deformed by design loads.
     这种变形曲面可以是具有一定制造误差的反射面,也可以是设计曲面在设计载荷作用下的变形反射面。
短句来源
     The obtained results show that the penstock on gravity dam downstream surface is quite safe under the action of its design load.
     研究结果表明:该工程采用重力坝下游面管道布置型式在设计载荷作用下是安全的、可行的;
短句来源
     under 3~3.5 times of design load, only certain cracks happen in the concrete of the penstock and no destruction takes place.
     在3.0~3.5倍的设计载荷作用下,下游面压力管道结构仅局部出现裂缝,并未破坏。
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  permissible loading
Do not exceed permissible loading values of bearings stated in the product catalogue.
      
If the compost has a nitrogen concentration of 2%, theoretically the maximum permissible loading would be about 11 Mg/ha.
      


This paper deals with the results of simulated material model tests of structure of penstock on gravity dam downstream surface. Two models for a certain large water power plant, which will be under con-stru-ction, are experimented for determining the stresses and strength of the pertstock under the coaction of dam body dead weight and the pressures of upstream water and sediment. The safety and destruction behavior of structure are examined by overload tests. The obtained results show that the penstock on gravity...

This paper deals with the results of simulated material model tests of structure of penstock on gravity dam downstream surface. Two models for a certain large water power plant, which will be under con-stru-ction, are experimented for determining the stresses and strength of the pertstock under the coaction of dam body dead weight and the pressures of upstream water and sediment. The safety and destruction behavior of structure are examined by overload tests. The obtained results show that the penstock on gravity dam downstream surface is quite safe under the action of its design load. under 3~3.5 times of design load, only certain cracks happen in the concrete of the penstock and no destruction takes place.

本文主要介绍通过仿真材料整体结构模型试验验证采用重力坝下游面压力管道布置型式的研究成果。采用我国拟建的某大型水电站参数,通过两个仿真材料的整体结构模型试验,研究该工程重力坝下游面压力管道在坝体自重、上游水压力和泥沙压力共同作用下下游坝面管的应力和强度,并通过超载试验,分析结构的安全度和破坏形态。研究结果表明:该工程采用重力坝下游面管道布置型式在设计载荷作用下是安全的、可行的;在3.0~3.5倍的设计载荷作用下,下游面压力管道结构仅局部出现裂缝,并未破坏。

A real surface of reflector is always the deformed one for antennas in radars and satellite earth stations.This kind of surface may be reflector either distorted by manufacturing or deformed by design loads.This paper presents a computing method based on least-square,which gives a best-fit surface as realistic reflector for deformed surface,so that it is possible to improve the accuracy of real reflector and the an-tenna performances,and to reduce the cost of manufacturing.Therefore,this method is more practicable...

A real surface of reflector is always the deformed one for antennas in radars and satellite earth stations.This kind of surface may be reflector either distorted by manufacturing or deformed by design loads.This paper presents a computing method based on least-square,which gives a best-fit surface as realistic reflector for deformed surface,so that it is possible to improve the accuracy of real reflector and the an-tenna performances,and to reduce the cost of manufacturing.Therefore,this method is more practicable sim-ple,clear and has better specification.

各种雷达天线、卫星通信地面站天线的实际反射面都是变形曲面。这种变形曲面可以是具有一定制造误差的反射面,也可以是设计曲面在设计载荷作用下的变形反射面。对变形曲面通过计算求其最佳拟合(又称吻合)曲面作为理想曲面,可以提高变形曲面的精度,从而达到降低成本、改善性能的效果。本文介绍一种从最小二乘法原理出发求取最佳拟合曲面(包括平面)的方法,该方法实用、规范且思路清晰。

This paper analyses the geometric nonlinearity of JJ315/43-A derrick under the permissible loading and presents the conception of nonlinear influence degree, with which we can determine what degree geometric nonlinearity influences on the parameters of derrick loading. As a result, the influence on X and Y directional displacement is greater, the influence on axial stress of derrick elements is small. So we can conclude that measuring Z directional displacement on derrick top or testing the main elements stress...

This paper analyses the geometric nonlinearity of JJ315/43-A derrick under the permissible loading and presents the conception of nonlinear influence degree, with which we can determine what degree geometric nonlinearity influences on the parameters of derrick loading. As a result, the influence on X and Y directional displacement is greater, the influence on axial stress of derrick elements is small. So we can conclude that measuring Z directional displacement on derrick top or testing the main elements stress by exerting a small load on derrick hook and using the linear extrapolation method to evaluate the safety resisting capacity of derrick is practicable.

文章对JJ315 43 A型井架在设计载荷作用下进行了几何非线性分析,提出非线性影响度的概念,通过分析非线性影响度来确定几何非线性对井架承载各参数的影响。分析得出,几何非线性对井架顶部x向、y向位移影响较大;对井架杆件轴向应力影响较小;从而得出在井架大钩较小载荷作用下,通过测量井架顶部z向位移及测试井架主要杆件的应力[1],以线性外推法进行井架安全承载能力评定是可行的。

 
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