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环境荷载     
相关语句
  environmental load
     STUDY ON THE ENVIRONMENTAL LOAD CRITIERIA OFEXISTING STRUCTURE STRUCTURE SAFETY EVALUATION
     现役结构安全度评估的环境荷载标准研究
短句来源
     The value of environmental load is computer according to the corresponding formula in specification API RP 2A and reference the enterprise classification (Q/HS3003-2002) of China National Offshore Oil Corp. and the paper uses the loads to analysis the structure in finite element method based on consideration of the action between structural dowel and soil.
     在考虑结构桩-土相互作用的基础上,进行结构有限元分析,分析使用的环境荷载采用API规范计算公式,冰荷载参考了中国海洋石油总公司企业标准(Q/HS3003-2002)。
短句来源
     This article carries out load analysis on three kinds of platform, computed theenvironmental load and vessel anchor load for the self-lift dock platform, andcomputed the environmental load of the self-lift trestle platform and bottom-seatedtrestle platform.
     此外,分析了三种平台所受的荷载,计算了自升式码头平台工作所受的环境荷载和船舶靠泊荷载,由于自升式栈桥平台和坐底式栈桥平台不存在船舶荷载,仅考虑了平台的环境荷载
短句来源
     Wave is the most active and important dynamic factors in cosat and offshore engineers, and brings the important environmental load to bear on the coast and marine structure.
     波浪是海岸及近海工程中最为活跃、最为重要的动力要素,也是施加在海岸及海洋建筑物上的重要环境荷载
短句来源
     On the basis of transferring the exposure chloride load,chloride penetration and resulted rebar corrosion into the time related environmental load and structure deterioration process,a practical system of service life design for structure has been established.
     通过将氯盐污染、氯离子渗透和导致钢筋锈蚀,转换为与时间相关的环境荷载与结构劣化进程,目前已形成具有实用价值、可操作的结构工作寿命设计体系。
短句来源
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  ambient dynamic loads
     Bridge Damage Detection Based on Discrete Spatial Wavelet Analysis by Using Ambient Dynamic Loads
     离散空间小波分析的环境荷载下桥梁的损伤识别
短句来源
     Simulation experiments show that the spatial wavelet analysis is capable of extracting damage information from the response signal of ambient dynamic loads in a simple,robust and reliable way.
     模拟试验表明,离散空间小波多分辨分析是识别环境荷载作用下桥梁损伤位置的准确可靠方法。
短句来源
  environmental loads
     With regard to the characteristics of environmental loads and structural dynamic responses,the design standard and reliability of power transmission line systems under earthquake and environmental loads are assessed. The state-of-the-art of high-voltage power transmission line systems and relevant disasters caused by environmental loads is analyzed.
     以输电塔-线体系的环境荷载特性和结构动力响应特性为出发点,分析目前高压输电塔-线体系的发展现状及人们对环境荷载缺乏认识而经常造成灾害事故的原因,论述了输电塔-线体系在现有设计水准下抵抗地震和环境荷载作用的能力和现阶段输电塔-线体系设计的可靠性。
短句来源
     Considering the internal flowing fluid and the external environmental loads, the lateral vibration differential equation of a marine riser is derived.
     考虑管内流动流体和管外海洋环境荷载共同作用 ,建立海洋立管侧向运动微分方程。
短句来源
     Study on Static and Dynamical Analysis of a Marine Riser Conveying Flowing Fluid Subjected to Environmental Loads
     海洋环境荷载下输液立管的静、动力特性研究
短句来源
     The practical plans are being actualized on the NYRB.After soliciting experts concerned and administrative personnel of the NYRB for opinions,the main monitoring contents which consist of environmental loads,structural responses and major diseases are confirmed.
     在征求众多专家和管理单位的意见后 ,确定南京桥监测的主要内容分为环境荷载、结构响应和重点病害等三类。
短句来源
     Based on the small deflection theory, the lateral motion equation of a marine riser conveying flowing fluid subjected to environmental loads is developed by use of finite element method.
     首先用有限单元法推导海洋输液立管在外界环境荷载条件下的侧向振动微分方程。
短句来源
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  “环境荷载”译为未确定词的双语例句
     The Disasters of Offshore Engineering and the Environment Load
     海洋工程灾害与环境荷载
短句来源
     The effects of resistance randomness and load dependence on the system reliability were compared.
     分析比较了考虑和忽略抗力随机性以及考虑和忽略环境荷载相关性对平台结构体系可靠度的影响。
短句来源
     Considering the structure-pile-soil nonlinear interaction,the capacity calculation model of the damaged jacket platform subjected to extreme environment loads was established according to the nonlinear step by step pushover analysis method.
     考虑结构-桩-土的非线性相互作用,运用非线性逐步倒塌分析方法,建立偶然灾害作用后的海洋平台损伤结构在极端环境荷载作用下的承载能力计算模型.
短句来源
     Passive TMD has been widely used to control and reduce the excessive vibration of the main structure under outside excitation. To design a TMD, the key procedure is to select TMD′s parameters.
     被动TMD已被广泛应用于控制和减小主结构在环境荷载下的过度振动,在TMD的设计过程中,关键的步骤是进行参数设计。
短句来源
     Having enlarged the ocean environment load (buoyancy, waves and ocean current load) calculation function based on the general three dimension unit, the ANSYS is much more suitable for the ocean engineering construction analysis than other softwares.
     在一般的三维梁单元的基础上扩充了单元的海洋环境荷载(浮力、波浪及海流荷载)的计算功能,因此与其它的有限元分析软件相比更加适合海洋工程结构的结构有限元分析。
短句来源
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  environmental load
By the analysis of some bioindicators the degree of the environmental load due to heavy metals can be estimated.
      
A number of examples on design optimization from different disciplines such as structural mechanics, manufacturing costs, fluid flow, acoustics, topology, mechanical systems and environmental load are presented.
      
Since 1970 the State Laboratory of Basle City has been periodically analyzing human milk from the region (the latest in 1998/99) as a bioindicator for the environmental load of organochlorine pesticides [1, 2].
      
The considered approaches require attention to dynamic modelling having features for decision making; for example, in areas of costs, sensitivity analysis and optimisation of LC process parameters to economically reduce the total environmental load.
      
Environmental Load of Nitrogen and Phosphorus from Extensive, Semiintensive, and Intensive Shrimp Farms in the Gulf of Californi
      
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  其他


In stead of usualy used design,wind velocity with a certain return pe- riod the wind loads probability distribution is given in accordance with the requirement of unified design criterion.All coefficients which appeared in the formulation wind loadsand relative wind velocity are considered as ran- dom variables.It can be shown that the probability distribution of all coef- ficients mentioned above is normal distribution,and that the relative wind velceity——is extremum distribution type Ⅰ.So based on the probability...

In stead of usualy used design,wind velocity with a certain return pe- riod the wind loads probability distribution is given in accordance with the requirement of unified design criterion.All coefficients which appeared in the formulation wind loadsand relative wind velocity are considered as ran- dom variables.It can be shown that the probability distribution of all coef- ficients mentioned above is normal distribution,and that the relative wind velceity——is extremum distribution type Ⅰ.So based on the probability distribution for multiplication of two random variables the wind loads probability distributicn can be obtained.

根据极限状态设计法及可靠度分析的要求,本文从风荷载入手,建立在设计基准期内最大值分布的概率模型,取代过去习用的多年一遇设计风速值。此模型考虑了各有关风荷载计算系数在自然界中的变异性,论证了大气容重,风载高度变化系数、体形系数等均可视为随机变量。同时根据各地域长期风速序列平均值大小各异的特点,采用风载因子——(V/■)~2作为计算风荷载的笫二个随机变量。以两随机变量乘积之概率分布的形式推导出一个对于海岸工程建筑物具有普遍性意义的风荷载概率模型。此模型可以进一步与波、流等其它形式的环境荷载组合,建设综合概率模型。这是极限状态设计法和可靠度分析中不可缺少的重要内容。

Wind load is one of the most important factors in the development of wind energy and also extremely important for designing offs'hore structure especially for its reliability analysis.

风荷载的计算不仅直接关系到风能的开发利用,而且对海洋工程构筑物的设计标准亦有重大影响。文中以渤海为例,提出了一种风荷载的概率模型。该模型综合考虑了海上风速、风载因子(相对风速之平方)及各种风荷载参数(体形系数、高度系数、大气重度及风向)的随机变化,并分别估算了它们的概率分布类型。在此基础上根据随机变量乘积的分布导出风荷载的分布,为了便于使用,已将计算结果绘制成诺模图,故文中建议的风荷载概率模型可适用于各种类型的海上工程建筑物及不同风况的广大海域,并能直接应用于现代工程结构物的可靠性分析或与波、流、水位等其它环境荷载进一步随机组合。

By introducing structural design service term and re-service term and recognizing that the determination of environmental load standard period in structural design is reasonable,a method is pressented here to determine the environmental load standard period for structural safety evaluation,which is based on the principle of the probability that the load ed exceeds the re-service term should be equated to the probability that the load ed in design exceeds the service term For the cases of structural...

By introducing structural design service term and re-service term and recognizing that the determination of environmental load standard period in structural design is reasonable,a method is pressented here to determine the environmental load standard period for structural safety evaluation,which is based on the principle of the probability that the load ed exceeds the re-service term should be equated to the probability that the load ed in design exceeds the service term For the cases of structural safety evaluation respectively using deterministic and stochastic environmental loads, the corresponding relationships between loads in evaluation and design are drawn out respectively. Finally,the determinations of wind and earthquake loads in building structural evaluation and of ocean environmental loads in Bobal No.8 offshore platform structure evaluation are repectively discussed and the corresponding load criteria of the evaluations are given.

本文在承认结构设计环境荷载基准期的确定是合理的基础上,通过引进结构设计使用期和结构评估再服役期,提出了以评估再服役期超越评估荷载的概率应等于设计使用期超越设计荷载的概率为原则(类比地)确定评估荷载基准期的方法2对于直接采用确定性或随机的环境荷载进行结构安全程度或可靠度评估的情况,分别导出了相应的评估荷载与设计荷载的关系;最后对建筑结构评估用风荷载和地震荷载的确定以及渤海8号平白评估用海洋环境荷载进行了具体的讨论,并得出了相应的结果。

 
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