连盐铁路连云港地区线路引入方案研究

主要介绍了连盐铁路线路方案的选线思路及设计原则,并结合路网规划、城市规划、沿线地形地质条件,着重对连云港地区多方案比较研究后,以连云港站西端引入,经云台山站东出的西进东出方案为推荐方案,既便于运输组织,又有利于地方港口开发。     

高速铁路“四电”集成技术的应用、创新与发展

我国新建高速铁路在设计及施工中大量采用先进技术,其中"四电"技术是保证电气化高速铁路安全运营的关键问题之一。以国内外铁路建设新技术发展为基础,探讨了集成技术的内涵意义,并阐述了"四电"集成技术的应用和创新,展望了其发展方向。     

客专32m双线后张法PC简支箱梁静载试验技术

通过介绍时速350km客运专线铁路无碴轨道双线后张法预应力混凝土简支箱梁静载试验过程,阐述了无碴轨道双线后张法预应力混凝土简支箱梁静载试验技术。     

客运专线减振型CRTSⅠ型板式无砟轨道凸形挡台设计计算研究

针对减振型CRTSⅠ型板式无砟轨道的凸形挡台进行受力分析和计算,考虑了列车荷载的纵向力、横向力即温度力等对凸形挡台的受力影响,并分别推导出了这些荷载影响因素对凸形挡台受力的计算公式。最后对减振型板式轨道的凸形挡台进行受力计算和结构设计,给出了凸形挡台的结构配筋方式。     

客运专线桥梁挠曲变形对CRTSⅠ型板式无砟轨道结构受力影响分析

对列车荷载通过桥梁而梁体发生挠曲变形时,CRTSⅠ型板式无砟轨道结构受到的附加挠曲力进行分析。首先推导了桥梁挠曲变形对无砟轨道结构受到的附加挠曲力的计算方法,然后分别对我国时速300～350km、200—250km的几种主要桥梁、上CRTSⅠ型板式无砟轨道的轨道板和底座板受到的附加挠曲力进行计算,为CRTSⅠ型板式无砟轨道的结构设计提供参考。     

关于防灾安全监控系统设计方案的探讨

防灾安全监控系统在我国铁路已成功应用。结合南宁至广州铁路工程,探讨关于防灾安全监控系统的设计方案。     

某客运专线新站楼盖天桥人行激励下的振动舒适度计算

采用三维有限元法,对某客运专线新站站房人行天桥进行人行荷载激励作用下的振动时程响应分析,得到该人行天桥的自振特性以及横竖向加速度和位移响应.与已有的国内外规范和传统的桥梁振动舒适度评价标准进行对比分析,对该天桥在随机人行荷载激励作用下的行走舒适度进行评估.     

A Simplified Approach to Analysis of High—Rise Frame Tube Structures

Based on finite element method and finite strip method, a simplified approach was presented to analyze high-rise frame tube structures. The generalized strip element is introduced and then the generalized stiffness matrices for beam and column-line are derived by using the displacement functions that describe the nodal displace-ments and displacement transforms. Furthermore, the formulas for the generalized stiffness matrix of generalized strip element and load arrays corresponding to the displacement parameters were developed. It is shown through a series of numerical computation that the nodal angular displacements at the same floor in a generalized strip element are approximately identical. A comparison of the finite element method and the finite strip method shows that the simolified approach not only is accurate, but also reduces the number of basic unknown quantities.     

Local Tensile Strength of Connection Between H-Steel Beam Flange and Concrete-Filled Circular Column Tube with Through Diaphragm

This paper focused on investigating local tensile strength of connection between steel beam flange and concrete-filled circular column tube with through diaphragm. Three specimens were designed and tested to failure,and the structure behavior was studied by experiment and FEM analysis. On the basis of the results obtained, an estimation for local plastic and ultimate strengths of the connections using yield line theory was attempted, which results in a good prediction.     

煤系地层采空区公路路堑高边坡的加固治理

以京珠高速公路粤境北段B标煤系地层采空区的杨梅山 (K16 +930～K17+2 6 0 )路堑高边坡治理工程为例 ,介绍钢筋砼人工挖孔抗滑桩、预应力锚索地梁等支挡结构 ,满铺浆砌片石护面墙、砼空心六菱块植草等坡面防护措施 ,结合排水、减载等多种工程手段综合治理高边坡的工作实践