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   局部火灾 的翻译结果: 查询用时:0.522秒
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局部火灾
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  local fire
     Fire Protection of Steel Structure of a Building Roof under Local Fire Conditions
     局部火灾条件下某钢结构屋架的抗火保护研究
短句来源
     Numerical Simulation of Temperature Field of Steel Portal Frame with Tapered Section under Local Fire
     局部火灾下变截面门式钢刚架结构温度场的数值模拟
短句来源
     This method can be used to give reference to the research on the fire-resistant design method of perinent structure under the local fire of large space as well.
     该方法可以为大空间局部火灾下相关结构的抗火设计方法的研究提供参考.
短句来源
     With the simulation results, the whole or local fire safety property in the high-rise building can be evaluated and emergency saving scheme can be scientifically made, useful information for establishing aid way is provided.
     利用模拟计算结果,可以评价高层建筑整体或局部火灾安全性能,制定科学的应急救援预案,提供救灾决策支持信息。
短句来源
     To analyze the response of steel structure subjected to the local fire
     局部火灾下钢框架的反应分析
短句来源
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  localized fire
     Nonlinear Analysis of the Overall Behavior of Steel Frames under Localized Fire Conditions
     局部火灾下钢框架结构整体性能的非线性分析
短句来源
     Performance based assessments are carried out on semi - continuous frames,multi - story structure and large- span arched frame exposed to localized fire.
     对承受局部火灾的半连续框架、多高层及大跨拱形桁架采用了基于性能的分析方法。
短句来源
  “局部火灾”译为未确定词的双语例句
     Analysis of the equivalent floor live-load of steel frame in local fired field
     局部火灾场钢框架结构等效楼面活荷载分析
短句来源
     The Research of the Fire Resistance Design for Steel Beam in Steel Structure Domicile in the Condition of Indocr Part Fire
     钢结构住宅中钢梁在室内局部火灾条件下的抗火设计研究
短句来源
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  local fire
The variance in pollen abundance and hence species population changes increased markedly in the historical period, especially amongst understorey taxa, and this could be related to changes in the local fire regimes and to the effects of grazing.
      
Local fire activity decreased from the prehistorical period at both sites.
      
Experimental results and dendrochronological study of local fire history both support the dominance of local fire regimes by low to moderate-intensity surface fires.
      
Such differences in local fire regimes could have resulted in the absence of hurricane effects in the peninsula.
      
Random set models of local fire spread are considered in more detail.
      
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  localized fire
The objective was to ascertain the utility of secondary metabolites (total polyphenols, condensed tannins, astringency, free and esterified phenolic acids) and pigments (chlorophylls and carotenoids) as chemical indicators of localized fire damage.
      


When the I section girders of steel frame buildings suffer local fire beneath the girders, large axial compression will be formed due to thermal expansion. It is possib1e that the lower flanges of the compressed girders viith laterally restrained upper flanges will buckle out Of the web planes.The differential equation governing the lateral buckling of the lower flanges of the girders is estab-lished. The effective lengths of the lower flanges of the fire-affected girders are obtained approxi-mately by the energy...

When the I section girders of steel frame buildings suffer local fire beneath the girders, large axial compression will be formed due to thermal expansion. It is possib1e that the lower flanges of the compressed girders viith laterally restrained upper flanges will buckle out Of the web planes.The differential equation governing the lateral buckling of the lower flanges of the girders is estab-lished. The effective lengths of the lower flanges of the fire-affected girders are obtained approxi-mately by the energy method- Based on the approach for checking the stability of axially com-pressed members adopted by the Chinese Code for Design of Steel Structures, the limit state equa-tion for lateral buckling of the lower flanges of the girders with laterally restrained upper flanges is established. In addition, the limit state equation for the destruction of three - hinge mechanism of the girders caused by local fire is also developed. The two limit state equations presented in this paper can be directly used for fire-resistant design of the girders in steel frame building.

本文根据钢框架中工字梁在梁下局部火灾下将产生较大温度轴压力,其受力状态发生改变的事实,建立了钢框架中上器无侧移工字形梁的下器侧移失稳挠曲微分方程,应用能量法近似求解获得了验算梁下翼缘侧向稳定的计算长度,并结合我国现行钢结构设计规范建立了梁下翼侧移失稳的极限状态方程。此外,本文还建立了局部火灾下梁形成三铰机构而破坏的极限状态方程。这两个极限状态方程可直接用于钢框架工字梁的抗火设计与计算。

In this paper, the overall behavior of steel frames under localized fire conditions has been ana-lyzed by the finite element method. The effects of geometric nonlinearity including temperature deformatiofy the temperature - dependent variation of nonlinear material property and the nonuniform temperature distribution in each member are considered in the analysis. Based on the principle of virtual work, the temperature load vector and the temperature geometric stiffness matrix are derived. A finite e1ement program...

In this paper, the overall behavior of steel frames under localized fire conditions has been ana-lyzed by the finite element method. The effects of geometric nonlinearity including temperature deformatiofy the temperature - dependent variation of nonlinear material property and the nonuniform temperature distribution in each member are considered in the analysis. Based on the principle of virtual work, the temperature load vector and the temperature geometric stiffness matrix are derived. A finite e1ement program for calculating either the ultimate load of structure under a specified temperature or the critical temperature of a structure under any load level is also developed. The accuracy of the method has been verified by comparison with test results available abroad.

本文用有限元法对局部火灾下钢框架结构的整体性能进行了分析,分析中考虑了包含温度变形影响的几何非线性、随温度升高材料性能的不断变化以及杆件截面温度分布不均匀等因素的影响。基于虚功原理,文章导出了温度荷载矩阵、温度几何刚度矩阵等概念,并编制了用于计算任意温度状态下结构的极限承载力或任意荷载状态下结构的温度极限值的有限元程序。同国外试验结果的比较验证了本文分析的正确性。

Based on the philosophy of structural mechanics,a practical approach is developed for calculating thermal forces induced in members of steel frames subjected to local fire.According to the approach,the constraining actions of neighbouring members on the thermal elongation of a given member are modeled as springs with equivalent constraint factors.Hence,the thermal forces of members in steel frames subjected to local fire can be conveniently determined by analyzing the thermal forces of an independent member...

Based on the philosophy of structural mechanics,a practical approach is developed for calculating thermal forces induced in members of steel frames subjected to local fire.According to the approach,the constraining actions of neighbouring members on the thermal elongation of a given member are modeled as springs with equivalent constraint factors.Hence,the thermal forces of members in steel frames subjected to local fire can be conveniently determined by analyzing the thermal forces of an independent member with elastic ends.Good agreements between the results of thermal forces obtained from overall structural analysis and from the proposed approach are found through a number of numerical examples.

根据结构力学原理和方法 ,提出了一种计算局部火灾下钢框架温度内力的实用计算方法。该方法将钢框架中的杆件简化成带弹性杆端约束的单个构件 ,计算其在升温时的温度内力。通过与全过程反应分析所得的结果进行对比 ,表明该方法具有很好的精度。

 
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