提高路基及路面基层平整度的措施

分析了完善工程施工工艺和方法,提出了提高路基及路面基层施工时平整度的措施。     

无缝道岔爬行观测桩的合理布置

针对无缝道岔的特殊性,通过理论分析,对无缝道岔爬行观测桩的合理布置提出了自己的看法。     

浅谈大连地区草养路基对公路养护的现实意义

草养路基,即草养路肩和边坡,经过大连地区近10年来的实践表明,此种方法对于公路养护中的预防水毁、绿化美化公路等方面不失为一种既简便易行又行之有效的好方法。     

电子商务中的数字现金系统

数字现金的关键技术和应用现状以及常用的数字现金。     

铁路横断面信息化在勘测设计一体化中的解决方案

分析了横断面测量数据与地质填绘的衔接以及完整横断面信息化策略,提出了适应铁路勘察设计一体化的横断面信息化解决方案。     

提速列车车厢内噪声,振动改变的探讨

对３种提速列车进行了车厢内噪声、振动测试，噪声测试结果符合车速每提高１０ｋｍ／ｈ，声级相应增加１～２ｄＢ（Ａ）的规律，噪声频谱峰值主要集中在低频段３１．５Ｈｚ及６３Ｈｚ倍频程中心频率，振动测试Ｚ向振级明显大于Ｙ向，Ｙ向大于Ｘ向，部分车厢座椅无减振作用。     

桥梁地震反应分析中输入地震波的确定

针对当前桥梁地震时程反应分析中，只重视计算方法、计算模型的研究，忽视输入地震波的情况，研究了进行时程分析时，确定输入地震波的原则和方法，推荐了３种比较合理的方法来确定时程分析中所需的地震波。     

斜支承曲线梁桥内力影响因素分析

为了深入了解斜支承曲线梁桥的受力性能,基于结构力学的力法原理,推导了任意斜度的斜支承曲线梁桥的内力计算公式。以这些公式为依据,编制了相应电算程序,详细分析了荷载作用位置、荷载类型、弯扭刚度比、斜度、圆心角等因素对斜支承曲线梁桥受力性能的影响。绘制的大量曲线清晰地显示了各项因素对斜支承曲线梁桥受力性能的影响规律。     

Experimental and numerical study on tuned liquid dampers for controlling earthquake response of jacket offshore platform

Earthquake loading has to be considered when the offshore platform is constructed in active fault zone. Tuned liquid dampers (TLD) have been proposed to control the dynamic response of structures. Liquid sloshing experiments on cylinder tank show the sloshing happens more seriously when the frequency of external excitation is close to the fundamental sloshing frequency of liquid. Lumped mass method is employed to numerically analyze the controlling earthquake effect on TLD. Based on TLDs the feasibility to control earthquake response of jacket platform is studied and applied to CB32A oil tank platform. Using extra TLDs in CB32A to control the seismic response of the platform is researched by the model test and numerical simulation. Lumped mass method can simulate the behavior of TLD during earthquake very well and gives close numerical results compared with those from model experiments. It has been found that the ratio of the fundamental sloshing frequency of liquid to the natural frequency of platform is the key factor to control earthquake response. The larger ratio of water-mass to platform-mass is also useful to reduce vibration as well.     

标致308后大灯的改进设计

车灯作为车身的重要部分，在设计中除要具备自身车型的鲜明特色，更要兼具美观、创新于一体。文中通过设计和实验比较，对标致308的后大灯进行改进设计，在保证东风标致车身特征的基础上，创新地应用新技术，使改进设计后的标致308后大灯具有绿色环保、美观、可靠性更高等特色。