凌志LS400轿车电子控制防抱死制动系统

凌志ＬＳ４００轿车的ＡＢＳ是一种对两前轮采用独立控制，对两后轮根据低选原则进行同一控制的三通道防换死制动控制。介绍了ＬＳ４００轿车防抱死制动系统的组成，工作原理，以及该车的ＡＢＳ电脑引了脚的功能及检测方法。     

高速公路沥青路面施工质量监控技术

结合广州某绕城高速公路路面工程施工实践,总结路面施工监控在实现全面质量管理、确保路面施工质量中的作用,以及施工监控工作的监控内容、工作流程及工作方法等.     

立交分(合)流区主线通行能力的研究

针对常规立交主线通行能力计算方法的不足,提出了立交主线通行能力的计算思路,认为立交主线通行能力应当取主线基本路段通行能力和分(合)流区主线通行能力两者中的较小值.为此,基于HCM2000立交主线服务水平的评估方法,推导了立交分(合)流区主线通行能力的计算模型,并举例说明模型的应用.     

汽车误踩油门纠错装置的设计

通过分析汽车误踩油门现象的原因及纠错装置研究现状,针对汽车误踩油门的误操作现象进行了更深入的研究,采用油门踏板加速度的不同来辨认误踩油门的可靠信号,并在此基础上设计了一种防止误踩油门的机电装置。     

浸管式加热装置的数值模拟及应用

针对浸管式加热装置设计中普遍存在的热平衡计算复杂、致使设计的加热装置耗能大、热效率低或加热功率达不到生产要求等问题。利用相关的物性参数和经典的燃烧学、传热学公式,编写了用于浸管式加热装置设计的计算机模拟程序。实践表明：程序模拟的结果与实测结果较为吻合。模拟程序的使用可以方便准确的进行设计方案的比选,为浸管式加热装置的设计提供了非常有效的工具。     

桥梁大位移伸缩装置使用浅谈

介绍了目前国内模数式大位移伸缩装置结构及其使用情况,提出大位移伸缩装置选用建议及改进方案;根据国内中梁型钢的材料及断面尺寸,计算多缝支承横梁的合理布置间距;还介绍了梁端运动的主要因素及伸缩装置缝宽计算方法,并结合实例进行说明。     

校园多媒体设备管理和使用的探讨

多媒体技术在教学中的应用越来越重要,它不仅改变了学习手段和学习环境,更改变了教学观念.要发挥好多媒体设备的作用,必须对多媒体设备进行科学的管理和正确的使用.结合广州航海高等专科学校多媒体设备的实际情况进行一些探讨.     

天津津滨轻轨桥墩主动托换信息化施工

该文针对天津滨海新区津滨轻轨桥墩托换施工的具体施工过程,提出了贯穿主动托换施工全过程的信息化施工流程,明确了各个施工阶段的监测内容和控制指标的标准,可指导其它托换工程参考。     

Study of the post-derailment safety measures on low-speed derailment tests

Prevention of train from derailment is the most important issue for the railway system. Keeping derailed vehicle close to the track centreline is beneficial to minimise the severe consequences associated with derailments. In this paper, the post-derailment safety measures are studied based on low-speed derailment tests. Post-derailment devices can prevent deviation of the train from the rail by catching the rail, and they are mounted under the axle box. Considering the different structures of vehicles, both trailer and motor vehicles are equipped with the safety device and then separately used in low-speed derailment tests. In derailment tests, two kinds of track, namely the CRTS-I slab ballastless track and the CRTS-II bi-block sleeper ballastless track, are adopted to investigate the effect of the track types on the derailment. In addition, the derailment speed and the weight of the derailed vehicle are also taken into account in derailment tests. The test results indicate that the post-derailment movement of the vehicle includes running and bounce. Reducing the derailment speed and increasing the weight of the head of the train are helpful to reduce the possibility for derailments. For the CRTS-I slab ballastless track, the safety device can prevent trailer vehicles from deviating from the track centreline. The gearbox plays an important role in controlling the lateral displacement of motor vehicle after a derailment while the safety device contributes less to keep derailed motor vehicles on the track centreline. The lateral distance between the safety device and rails should be larger than 181.5?mm for protecting the fasteners system. And for the CRTS-II bi-block sleeper ballastless track, it helps to decrease the post-derailment distance due to the longitudinal impacts with sleepers. It can also restrict the lateral movement of derailed vehicle due to the high shoulders. The results suggest that, CRTS-II bi-block sleeper ballastless track should be widely used in derailment prone areas.     

基于分离式结构设计理念的液压靠船系统

通过在靠船桩与叉桩间加入环形液压装置,并将叉桩与主体结构部分分离,提出了一种新型的浮式靠船系统。结合数值仿真模拟在船舶荷载撞击的情况下对靠船桩、叉桩进行了承载能力分析。与现有高桩码头及浮式靠船系统相比,该系统具有使用方便、保护码头主体不受撞击、减缓码头承载能力下降速率等优点。从使用安全和航运经济考虑,该新型靠船系统结构更优、使用更加安全、能提高码头装卸效率、有广阔的应用前景。