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61.
根据安徽221省道焦槽段公路地质灾害治理的工程实践,简要介绍了SNS柔性防护系统与客土喷播边坡绿化生态防护系统相结合的施工方法和工艺流程,以此说明这一防护技术与传统的边坡防护相比,具有施工快捷、方便、环保等优势,适用于坡体整体稳定但局部坡面崩塌、碎落、滚石等不良地质灾害的防治。 相似文献
62.
高职高专专业建设探讨 总被引:1,自引:1,他引:0
袁炎清 《广州航海高等专科学校学报》2005,13(8):23-25,31
根据高职高专人才培养的基本特征,高职高专在专业设置上应具有特色性、在专业建设上应具有开放性、在专业发展上应具有灵活性,这“三性”要体现到专业的社会需求、培养目标、课程设置、教学内容、队伍建设、教学管理、教学方法、教学手段、教学实践以及相应的教研科研上. 相似文献
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结合济聊高速公路聊城段路面大修工程,介绍大粒径沥青混合料柔性基层在级配设计、质量控制的诸多方面较普通沥青砼都有较大的区别。本文在级配设计、施工工艺、质量控制和离析控制方面作了介绍,对新结构的实际应用有一定的指导意义。 相似文献
65.
The Master Plan has long been the traditional go-to approach to airport development. It was originally conceived for a scenario of stable growth. In recent decades, however, the airport industry has undergone substantial structural changes, with the traditional Master Plan progressively revealing limitations with regard to airports coping with the market’s unpredictability. There have since been increased calls for flexibility in the approach as an alternative or as a complement to the traditional Master Plan. A flexible development plan helps to accommodate changes within terminals. This paper presents a review of the current literature on airport terminal flexibility, covering a total of 19 reference works. The works were analysed in terms of the concepts, definitions and deployment frameworks, or similar. The review reveals that research in airport terminal flexibility is still in its early stages. A consensual definition has yet to be defined and no robust framework for deploying flexibility has been defined. We propose a new definition of flexible development. Furthermore, flexibility has been studied essentially in the context of expansion. However, in certain regions where land availability is scarce, other forms of airport development may be more important. We conclude the paper with suggestions for future research areas. 相似文献
66.
为了深入研究联合动力在动力切换过程中系统所体现出的机动性能,三S离合器(Synchro-Self-Shifting)作为传动部分的关键部件,其相关参数的动态变化更引人注目,本文构建了测试平台并完成了离合器在不同影响因素下的实验,首次完整定义了离合器工作过程中的时间参数,获得了时间参数的基本规律,为分析系统在动力切换过程中表现出的的机动性能提供了依据,同时也为动力装置传动系统的强度及控制系统设计提供参考。 相似文献
67.
近年来人们对管件液压柔性成形技术表现出了越来越大的兴趣,此项技术具有诸多的优点,如质量轻、刚度好、装配零件少、后续装配工序少等,特别适合制造复杂变截面管材结构,故在国外该项技术已被广泛地运用到汽车、宇航领域中。为了推广此项技术在我国的研究及应用,在此对此项技术的原理、优点、实用性及在国内外汽车领域方面的应用现状进行了介绍及探讨。 相似文献
68.
浅析汽车混流柔性焊接生产线制造技术 总被引:1,自引:0,他引:1
从汽车产品平台化和生产线规划的角度阐述宏观意义上的柔性技术,简要介绍世界上比较典型的柔性合装夹具,论述夹具是混流柔性技术的关键,指出性能价格比高的柔性制造技术将会有广阔的应用前景。 相似文献
69.
Accurately and efficiently predicting the load sharing of multi~bolt thick laminate joints is necessary to quicken the optimization of the large-scale structures over various design variables, and a two-dimensional (2D) finite element method (FEM) is introduced to meet such a demand. The deformation contributions of the joint zone are analyzed and calculated separately, including the shearing deformation of the fasteners shank, the bending deformation of the fasteners shank, and the bearing deformation of the fasteners and joint plates. These deformations are all transferred and incorporated into the components of the fastener's flexibility. In the 2D finite element model, the flexibilities of the beam elements and bush elements are used to simulate different components of the fastener's flexibility. The parameters of the beam elements which include the bending moment of inertia and intersection area, and the parameters of the bush elements which include the stiffness in different directions, are all obtained through equalizing the fasteners flexibilities. In addition, the secondary bending effect introduced by the single-lap joints is also taken into account to verify the flexibilities of the fasteners in practical application. The proposed FEM is testified to be more accurate than the traditional 2D FEMs and more efficient than the three-dimensional (3D) FEM in solving load sharing problem of multi-bolt single-lap thick laminate joints. With the increase of joint plates' thickness, the advantages of the proposed method tend to be more obvious. The proposed 2D FEM is an effective tool for designing bolted joints in large-scale composite structures. 相似文献
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