舰用电磁炉灶抗冲击环境的设计与工程实践

为了将民用电磁炉灶应用于舰船环境,尤其是水下近距离非接触爆炸的诱发冲击环境,针对其环境适应性进行了重新设计.论述了舰用电磁炉灶抗冲击的设计要求,提出了舰用电磁炉灶抗冲击设计方法,并通过舰用电磁炉灶抗冲击试验验证了设计的合理性.     

基于能量的建筑结构抗震设计方法介绍

基于能量概念的抗震设计方法能较好地反映地震动三要素,特别是持续时间对结构引起的累积损伤破坏的综合影响,因此日益受到地震工程研究的重视.本文对地震作用下结构的总输入能量、结构总耗能的分配与分布、结构的耗能能力和具体设计方法等方面的研究现状进行了综合分析和介绍,为能量抗震方法的应用和推广提供参考.     

Perspectives on policy framework for trans-boundary water quality management in China

In river basins that cross jurisdictional boundaries, water quality degradation has become a crucial problem and results in intensive competition among water users, especially in developing countries. Under this situation, implementing water quality management and control across jurisdictional boundaries can strengthen watershed pollution controls, and prevent pollution from being passed on and promote active pollution control within the related jurisdictional regions. This study examined the limitations of the current trans-boundary water quality management system in China and reviewed the planning and implementation of two pilot integrated trans-boundary water management systems established in the Jiangsu and Zhejiang provinces. Based on our findings, we proposed a new policy framework for trans-boundary water quality management. As a first step toward integrated watershed management in China, this policy framework can help assess the actual water pollution status of various regions and serve as a basis for an integrated watershed management system. The framework can be easily applied in other countries with trans-boundary water pollution issues, particularly in the context of developing countries.     

外挂式声屏障

声屏障作为噪声污染治理的主要措施之一,已广泛应用于公路、铁路、市政等多种领域。传统声屏障安装方式存在一些安全隐患,针对这些安全隐患,我公司开发出外挂式声屏障。外挂式声屏障改变传统的声屏障板插接在H钢立柱内的安装方式,声屏障板安装在立柱的外侧,并且声屏障板长度可以达到6~10米,每块声屏障板有3~5个固定件固定在立柱上,不会由于某个固定件损坏产生安全问题。外挂式声屏障既保证了声屏障系统的安全,又达到了安装方便、美观大方的特点,将会在声屏障领域的得到广泛应用。     

人工湿地在汾河中下游生态修复工程设计中的应用

针对汾河中下游河水污染以及物种多样性减少等生态问题,采用人工湿地技术对流域内水质及生态系统进行修复。以小店区工程为重点段,结合人工湿地在该区域内工程设计中的应用,提出设计中的注意事项,为其他地区河道生态修复工程设计提供参考。     

岩质边坡随机楔体稳定性分析的Monte-Carlo模拟

结构面组合形成的楔体滑动是岩质边坡的一个主要失稳模式.本文依据统计学理论和概率理论,将Monte-Carlo模拟引入到岩质边坡随机楔体的稳定性分析中,通过设定随机过程,计算参数估计量和统计量,研究了节理的随机分布特征,同时建立了随机楔体模型,采用极限平衡理论计算了楔体的破坏概率,并针对实际工程中经常遇到的小楔体失稳概率...     

机载导弹发射装置环境适应性设计初探

研究机载导弹发射装置的环境适应性是一项既具有理论意义又具有工程实用价值的工作。为了使发射装置在较为严酷的工作条件下保持正常稳定的工作性能,针对发射装置的环境要求,开展了发射装置环境适应性设计研究工作,综合分析研究了环境适应性设计的一般原则和主要步骤,进行了发射装置的总体结构及电气结构设计研究,为发射装置环境适应性设计提供了一般指导原则。     

燃煤电厂LXMC型袋式除尘器仿真设计软件的开发研究

文章以某燃煤电厂300MW机组原始资料为研究对象,参考了新的火电厂大气污染物排放标准(GB13223-2011)中对除尘方面的最新要求,以Visual Basic 6.0语言为开发工具,分别从仿真软件的需求分析、内容、层次结构等方面描述了软件开发的缘由和总体的开发思路,探讨了该仿真软件的界面功能设计和界面的美化等,并通过设计结论,分析了袋式除尘器仿真设计软件的各种优点。该软件具有知识库管理功能、工艺仿真功能等。     

CAD and DFM: enablers of sustainable product design

Sustainability has been regarded as an important concept for survival in the contemporary scenario. Modern design engineers are in need of approaches for creating sustainable products. In this context, this paper reports a case study carried out in an Indian modular switches manufacturing organisation. The existing handle of the switch has been modelled using computer-aided design (CAD). Then, the sustainability analysis has been carried out for determining the environmental impact. This is followed by the redesign of the handle using design for manufacturability (DFM) principles. The sustainability has been measured in terms of carbon footprint, energy consumption and air–water impacts. It has been found that the redesigned handle possesses minimal environmental impact. It could be inferred from the results of the case study that CAD and DFM could lead to the development of sustainable product design with minimal impact on the environment.     

Assessing the number of users who are excluded by domestic heating controls

Space heating accounts for almost 60% of the energy delivered to housing which in turn accounts for nearly 27% of the total UK's carbon emissions. This study was conducted to investigate the influence of heating control design on the degree of ‘user exclusion’. This was calculated using the Design Exclusion Calculator, developed by the Engineering Design Centre at the University of Cambridge. To elucidate the capability requirements of the system, a detailed hierarchical task analysis was produced, due to the complexity of the overall task. The Exclusion Calculation found that the current design placed excessive demands upon the capabilities of at least 9.5% of the UK population over 16 years old, particularly in terms of ‘vision’, ‘thinking’ and ‘dexterity’ requirements. This increased to 20.7% for users over 60 years old. The method does not account for the level of numeracy and literacy and so the true exclusion may be higher. Usability testing was conducted to help validate the results which indicated that 66% of users at a low-carbon housing development could not programme their controls as desired. Therefore, more detailed analysis of the cognitive demands placed upon the users is required to understand where problems within the programming process occur. Further research focusing on this cognitive interaction will work towards a solution that may allow users to behave easily in a more sustainable manner.