轨道支承梁式的铁道高架桥

在城市铁路高架桥梁工程中，目前使用最广泛的仍是梁（板）式刚构桥。这种结构由于现场工作量大，势必要求较长的工期及较高的建设成本，与经济性、安全性、环境性、耐久性等时代要求很不适应。     

Delay Restoration of Single-Track Railway Rescheduling

On the basis of analysis of the principle of delay restoration in a disturbed schedule, a heuristic algorithm for rescheduling trains is developed by restoring the total delay of the disturbed schedule. A discrete event topologic model is derived from the original undisturbed train diagram and a back propagation analysis method is used to label the maximum buffer time of each point in the model. In order to analyze the principle of delay restoration, the concept of critical delay is developed from the labeled maximum buffer time. The critical delay is the critical point of successful delay restoration. All the disturbed trains are classified into the strong-delayed trains and the weak-delayed trains by the criterion of the critical delay. Only the latter, in which actual delay is less than its critical delay, can be adjusted to a normal running state during time horizon considered. The heuristic algorithm is used to restore all the disturbed trains according to their critical details. The cores of the algorithm are the iterative repair technique and two repair methods for the two kinds of trains. The algorithm searches iteratively the space of possible conflicts caused by disturbed trains using an earfiest-delay-first heuristics and always attempts to repair the earliest constraint violation. The algorithm adjusts the weak-delayed trains directly back to the normal running state using the buffer time of the original train diagram. For the strong-delayed trains,the algorithm uses an utility function with some weighted attributes to determine the dynamic priority of the trains, and resolves the conflict according to the calculated dynamic priority. In the end, the experimental results show that the algorithm produces ＂good enough＂ schedules effectively and efficiently in disturbed situations.     

高速铁路桥梁板式无碴轨道施工技术

介绍了用于高速铁路桥梁上的一种新型轨道结构——板式无碴轨道施工技术，主要包括轨道板的施工、CA砂浆的制配及灌注、充填式垫板的施工等关键技术，对城市高架轻轨、高速铁路桥梁等工程推广此项新技术具有参考价值和实用价值。     

城市轨道交通减振降噪技术的应用

本文分析了轨道交通噪声产生的根源、噪声传播规律,介绍了广州市地铁2号线应用多项减振降噪技术来解决城市轨道交通的噪声污染情况,提出应优先考虑在轨道结构方面采取减振降噪措施,同时重点介绍了弹性短轨枕轨道和浮置板轨道的减振降噪原理和施工方法.     

轨检车测取的轨道谱精度分析

从理论解析，模型仿真分析及实测对比三方面，研究分析了轨检车移动负荷轮在不同速度时通过平顺轨道和不平衡轨道区段的动态轨迹变化。分析表明，在移动负荷轮作用下，轨道不平顺引起的轨道附加变形在不同速度时的量值很小，可忽略不计，基于负荷车轮进行轨道不不顺动态检测可如实反应实际轨道不平顺特征和幅值大小，用轨检车测取的轨道平顺样本进行轨道谱分析不会影响轨道谱精度，澄清了轨检车的检测数据可能包含较大响应成分的疑虑     

码头堆场设备选型

码头堆场起重机主要分轨道式和轮胎式两种型式,码头在选型时必须十分谨慎,因为一旦确定,以后相当长一段时间内就不能轻易改动.     

轨道结构垂向设计荷载协调计算的研究

比较国内外铁路设计荷载，应用轨道结构垂向力分配传递模式，提出轨枕、道床及路基协调荷载计算公式及设计荷载安全系数概念，通过与其它计算公式比较，得出用于我国高速铁路设计的轨枕、道床及路基竖向荷载设计安全系数，并给出200km／h、350km／h线路竖向设计荷载的计算方法。     

钢轨嵌入式轨道结构及其设计优化

在对现有轨道结构类型进行分析的基础上，论述了嵌入式轨道结构的设计理念，对其设计优化进行了初步研究，并分析了减振降噪的原理，提出了合理的下部基础形式。