交通综合信息平台建设研究

建立一个基于GIS-T的交通综合信息平台。它能够接受、存储和处理多源异构数据．能够为各种应用子系统和公众提供良好的信息服务。同时，对平台的框架设计、功能构成以及平台实现的关键技术进行说明和分析。     

柴油发电机组CAD系统的开发

主要讲述了柴油发电机组CAD系统的设计和实现。详细介绍了组成该系统的三大部分——电磁优化设计、机构设计、明细表的生成与汇总的设计思想和实现的关键技术：AutoCADVBA，VB与AutoCAD的连接技术，数据库技术。     

Wheel-rail contact models for vehicle system dynamics including multi-point contact

Advanced modelling of rail vehicle dynamics requires realistic solutions of contact problems for wheels and rails that are able to describe contact singularities, encountered for wheels and rails. The basic singularities demonstrate themselves as double and multiple contact patches. The solutions of the contact problems have to be known practically in each step of the numerical integration of the differential equations of the model. The existing fast, approximate methods of solution to achieve this goal have been outlined. One way to do this is to replace a multi-point contact by a set of ellipses. The other methods are based on so-called virtual penetration. They allow calculating the non-elliptical, multiple contact patches and creep forces online, during integration of the model. This allows nearly real-time simulations. The methods are valid and applicable for so-called quasi-Hertzian cases, when the contact conditions do not deviate much from the assumptions of the Hertz theory. It is believed that it is worthwhile to use them in other cases too.     

Simulation on progressive collapse behaviour of whole ship model under extreme waves using idealized structural unit method

To ensure the safety of navigating ship, working loads and structural load-carrying capacity are two important aspects. In the present paper, a total simulation system combing load calculation and structural collapse analysis is applied to simulate progressive collapse behaviour of a single-hull Kamsarmax type bulk carrier. A three dimensional singularity distribution method is adopted to calculate pressure distribution with time history. A mixed structural model, collapse part simulated by ISUM elements and remaining part by elastic FEM elements with relative coarse mesh, is proposed for collapse analysis. Progressive collapse behaviour obtained by ISUM is good agreement with that by nonlinear software package, MARC. However, the calculation time of ISUM analysis is about 1/70 of MARC analysis. The applicability to structure system, high accuracy and sufficient efficiency of ISUM had been demonstrated.     

R/S分析法在盾构下穿机场过程中的地表变形规律研究

为保证机场的正常运营,在盾构下穿机场的施工过程中,对地表沉降变形控制的要求较高,因此对穿越过程中的施工控制和变形规律研究具有重要意义。首先,基于盾构下穿机场的工程条件,分析盾构下穿过程中的风险,并提出相应的控制措施;同时,根据现场监测数据,分析盾构下穿机场过程中的地表沉降变形规律,并利用R/S分析法对地表沉降的发展趋势进行研究。结果表明:盾构施工引起的机场地表变形均在控制值范围以内,且各监测点在不同序列条件下的Hurst指数均大于0.5,具有沉降持续减弱的趋势,验证下穿过程中风险控制措施的有效性,为类似下穿机场的盾构施工提供一定的实践经验,也为盾构施工引起的地表沉降变形规律研究提供参考。     

大力推进信息化建设 提升企业综合竞争力

结合企业计算机应用的实际,以及造船生产劳动强度大、劳动环境恶劣、船用配件和材料种类繁多等特点,介绍在造船工业中,将设计、制造、管理等集为一体纳入计算机综合管理的集成系统,目的在于寻求一种采用计算机技术挖掘企业内部潜力,提高工作效率、推进企业信息化、加快企业生产和管理现代化、提升企业综合竞争力的新途径。     

船舶低硫柴油系统设计的分析与优化

就新辟航线首制船“汉亚直达”集装箱船的低硫柴油系统,叙述了船舶低硫柴油系统的设计经验,从当前国内外对船用燃油硫含量的要求、应对方案到船舶低硫柴油冷却方式选择、低硫柴油冷却系统设计、高/低硫柴油转换、使用低硫柴油风险分析及处理等方面进行详细叙述,为业内同行提供参考。     

液压式盾构/TBM主机平移-空推集成装置的研制

研究目的:目前,隧道掘进机平移与空推工艺多采用不同装置分步完成,装置安装耗时费力,严重影响项目施工进程,且国内外没有可同时解决掘进机主机平移和空推的工法或装置。本文研制了一种基于液压的盾构/TBM主机平移-空推集成装置,将平移与空推工序合一,可极大提高工程施工效率,实现荷载600 t盾构/TBM主机连续移位。研究结论:(1)利用液压力驱动液压马达实现装置移位和驱动轮90°转向,实现了平移与空推工艺集成;(2)多轮系和从动轮碟簧设计可优化载荷分布,从动轮选用自润滑推力关节轴承使装置可适应一定倾斜度和不平度,提升装置运行平稳性;(3) 600 t荷载下,利用聚氨酯包敷于钢轮外的复合轮设计减小了轮系与地面接触应力,降低地面要求;(4) ANSYS仿真分析表明承载台架满足强度要求;(5)目前该装置已成功应用于青岛地铁8号线项目,缩短工期20 d,填补了国内外技术空白,应用前景广阔。     

Tyre/road noise damping characteristics using nomographs and fundamental vibroacoustical relationships

Several studies have successfully developed laboratory and field measurement techniques to estimate tyre/road noise damping characteristics. However, laboratory–field noise correlations of pavement types in the form of nomographs is essential to cognize the pavements’ acoustical properties from a practical perspective. A toolkit that readily provides field tyre/road noise intensity of different pavement materials is needed. Thus, the main objective of this study was to develop nomographs with relationships for tyre/road noise versus pavement materials’ viscoelastic–vibroacoustical properties. Isothermal and isochronal nomographs of phase angle–tyre/road noise as toolkits were developed based upon well-established phase angle and noise intensities typical of mixtures, making the nomograph correlations very authentic, realistic, and novel along with benefit to predict tyre/road noise at any desired temperature and traffic speed (or frequency) combination. This study is envisaged to benefit in the discernment of road materials’ damping capabilities from vibroacoustical and field noise–viscoelastic relation aspects.     

船舶推进同步电机PTI/PTO模式研究

PTI/PTO推进是最近发展起来的一种新型船舶推进方式,兼具传统柴油机推进和电力推进优点,可实现多种船舶工作模式,具有操控性好、安全、经济等特点,将是未来船舶推进方式发展方向之一.本文介绍了PTI/PTO推进模式理论和工作模式,便于理解该推进方式,希望有助于船舶推进技术的发展.