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Nonlinear sealing force of a seawater balance valve used in an 11000-meter manned submersible
《机械工程前沿(英文)》 2023年 第18卷 第1期 doi: 10.1007/s11465-022-0726-y
关键词: seawater balance valve sealing performance hybrid ANE model FEM minimum sealing force equation
杜洪池,杨宁
《中国工程科学》 2012年 第14卷 第5期 页码 19-22
泰州大桥北锚碇沉井封底总方量超过30 000 m3,为目前国内立方量最大的水下封底混凝土施工工程,其施工难度大,现场组织要求高。从沉井清基、封底设备布置、封底混凝土施工工艺等方面概略介绍泰州大桥北锚碇沉井封底施工技术。
李竹影,曹文康,刘冶,张晓东
《中国工程科学》 2015年 第17卷 第5期 页码 58-62
研究了用于舰船管系异种金属绝缘的石棉橡胶纤维垫片和环氧垫片在海水、碱溶液(10 % NaOH溶液)、酸溶液(10 % H2SO4溶液)和重油中浸泡后,其体电阻率和面电阻率随浸泡时间的变化规律。实验结果显示,石棉橡胶纤维垫片在酸、碱溶液中浸泡两个月后,其湿态电阻降低到102欧姆(或欧姆?厘米)量级,在海水中的电绝缘有效期约为4个月,环氧垫片的湿态电阻可保持为104~6欧姆(或欧姆?厘米)量级,环氧材料组成的垫片其绝缘性能远好于石棉橡胶纤维垫片的绝缘性能。
关键词: 石棉橡胶纤维垫片;环氧垫片;电阻率
水利水电工程领域的创新材料 Review
Emanuele Quaranta, Peter Davies
《工程(英文)》 2022年 第8卷 第1期 页码 148-158 doi: 10.1016/j.eng.2021.06.025
水电行业目前正在经历几项技术发展。新技术和方法的不断涌现,使水力发电更加灵活和可持续。研究人员最近还开发出了新材料以提高水电技术的性能、耐用性和可靠性;然而,缺乏对其进行系统讨论的研究文献。因此,本文介绍了用于水电应用的新型材料,并对它们的性能、优势和局限性进行了讨论。例如,复合材料可以使钢铁设备的重量减轻50%~80%,聚合材料和超疏水材料可以减少4%~20%的压头损失,新型轴承材料可以减少6%的轴承磨损。虽然某些材料的初始成本相对于传统材料的成本尚不具有竞争力,但这些改进提高了材料的效率,延长了材料寿命,减少了浪费和维护需求。本文根据以下类别描述新型材料:涡轮机、大坝和水道、轴承、密封件及海洋水电的新型材料。
Performance-based and performance-driven architectural design and optimization
Xing SHI
《结构与土木工程前沿(英文)》 2010年 第4卷 第4期 页码 512-518 doi: 10.1007/s11709-010-0090-6
关键词: performance optimization architectural design simulation sustainability
《结构与土木工程前沿(英文)》 2023年 第17卷 第5期 页码 704-721 doi: 10.1007/s11709-023-0941-6
关键词: precast steel–UHPC composite beam flexural performance longitudinal shear performance parametric study transverse reinforcement ratio
Experimental research on cyclone performance at high temperature
LI Wenqi, CHEN Jianyi
《机械工程前沿(英文)》 2007年 第2卷 第3期 页码 310-317 doi: 10.1007/s11465-007-0055-1
关键词: diameter definite function nondimensional experimental cyclone performance influence
Comparison of indices for stiffness performance evaluation
Giuseppe CARBONE, Marco CECCARELLI,
《机械工程前沿(英文)》 2010年 第5卷 第3期 页码 270-278 doi: 10.1007/s11465-010-0023-z
《结构与土木工程前沿(英文)》 2021年 第15卷 第4期 页码 895-904 doi: 10.1007/s11709-021-0759-z
关键词: steel bridge deck pavement ultra-high-performance concrete epoxy resin composite structure bending fatigue performance
Cutting performance of surgical electrodes by constructing bionic microstriped structures
《机械工程前沿(英文)》 2023年 第18卷 第1期 doi: 10.1007/s11465-022-0728-9
关键词: surgical electrodes tissue adhesion thermal injury bionic structures cutting performance medical tools
Recovery and reuse of floc sludge for high-performance capacitors
《环境科学与工程前沿(英文)》 2022年 第16卷 第6期 doi: 10.1007/s11783-021-1512-5
• The feasibility of facile fabrication of capacitor from floc sludge is discussed.
关键词: Floc sludge Porous carbon electrode Energy storage performance Supercapacitors
Discrete-event stochastic systems with correlated inputs: Modeling and performance evaluation
《工程管理前沿(英文)》 2022年 第9卷 第2期 页码 214-220 doi: 10.1007/s42524-022-0192-6
关键词: discrete-event stochastic system correlated input performance evaluation
《结构与土木工程前沿(英文)》 页码 884-900 doi: 10.1007/s11709-022-0912-3
关键词: shield tunnel waterproof performance horizontal transverse deformation joint opening weakening behavior
Facility managers’ perceptions on building performance assessment
Rafaela BORTOLINI, Núria FORCADA
《工程管理前沿(英文)》 2018年 第5卷 第3期 页码 324-333 doi: 10.15302/J-FEM-2018010
During the operational phase, building performance may decrease in various areas, so that the end users’ requirements are no longer met. Consequently, indicators are useful to assess and improve the performance of existing buildings. In this study, we carried out a literature review and organized a focus group with facility management experts to gather and analyze facility managers’ perceptions on operational indicators that could be used to assess the performance of buildings. The results revealed that the core indicators used to measure a building’s operational performance are related to safety and assets working properly, health and comfort, space functionality, and energy performance. The findings also revealed that these indicators can be obtained from three sources: a) facility managers/operators, who carry out corrective maintenance and perform technical inspections, b) regular users, who report complaints and fill-in satisfaction questionnaires, and c) sporadic users, who also fill-in satisfaction questionnaires. These indicators and their sources can contribute to a better analysis of building performance and the definition of measures to improve performance during the operational phase of a building.
关键词: building performance facility management non-residential buildings
标题 作者 时间 类型 操作
Flexural and longitudinal shear performance of precast lightweight steel–ultra-high performance concrete
期刊论文
Performance of steel bridge deck pavement structure with ultra high performance concrete based on resin
期刊论文
Weakening behavior of waterproof performance in joints of shield tunnels under adjacent constructions
期刊论文