浅析西安地铁项目工程变更管理

地铁项目工程在施工过程易受地形地貌以及水文等自然条件的制约,因此会经常出现工程变更的情况,会直接影响工程造价的变迁。基于这种情况,结合地铁三号线的相关做法和经验,分析地铁项目工程变更管理中存在的问题与相应的完善措施。希望对地铁项目工程的变更管理起到一些借鉴。     

浅谈我国新城开发的模式问题——以温岭东部产业集聚区为例

提出我国开发区、新区、新城的发展所遇到的难题,分析我国新城发展模式的成功经验,作为解决发展难题的方式,从而能够为温岭东部产业集聚区的发展提出建设性的建议。     

基于模糊层次分析法的地铁施工风险评估

由于城市地铁施工设计方案和地下条件的复杂性,地铁施工建设过程中极易导致事故的发生。论文首先分析影响地铁施工的客观风险和技术风险,利用专家调查法和模糊层次分析法得出技术风险中设计方案缺陷是其主要风险;然后,从导致设计方案缺陷的详细风险因素中利用优先关系判断模糊矩阵,得出地铁施工中透水是最易导致事故发生的风险因素。有效控制地铁施工过程中的风险因素,才能从根本上预防事故的发生。     

北京市郊铁路建设优化探讨刘小平

建设京津冀环渤海轨道交通“一小时经济圈”对于实现京津冀经济一体化具有重要意义。根据城市规划及北京市城市交通特点,借鉴国际轨道交通特别是市郊铁路建设运营的经验,明确交通经济圈分层结构,提出在发展完善地铁网和高铁网的基础上,因地制宜,近远结合,充分利用既有铁路资源,建设S1至S7数条市郊铁路,并通过综合客运交通枢纽形成“三张网”有机联系,实现综合运能最大化的设想。     

A dynamic panel analysis of urban metro demand

A dynamic panel model is used to estimate the effect that fares, income and quality of service have on demand for a sample of 22 urban metros. The estimated price elasticity is −0.05 in the short run and −0.33 in the long run. The estimated long run income elasticity is small but positive (0.18), indicating that metros are perceived as normal goods. The quality of service elasticities are positive and substantially higher than the absolute value of fare elasticities. The implication is that quality of service improvements, rather than fare reductions, may be more effective in increasing metro patronage.     

长沙地铁二号线盾构隧道下穿京珠高速公路施工地表沉降控制研究

长沙地铁二号线盾构隧道下穿京珠高速公路可能引起地层位移和路基沉降,影响高速公路的正常运营,施工风险大。根据实际条件,文章建立三维数值模型,采取数值模拟与现场实测相结合的方法来研究盾构隧道施工引起的地表沉降特征,提出了控制措施。实测显示隧道施工对于京珠高速公路的正常运营影响很小。     

The Anticipated Capitalisation Effect of a New Metro Line on Housing Prices*

Housing units with closer access to public transportation enjoy a higher market value than those with similar characteristics but poorer access. This difference can be explained by the lower cost of transport to the main workplaces and shopping areas in town. For this reason, investments in public transport infrastructure, such as building a new metro line, are capitalised totally or partially into land and housing prices. This work empirically analyses the degree of capitalisation into housing prices of the benefits of the new Line 4 of the Santiago metro system, which began operating in December 2005. We focus on anticipated capitalisation into housing prices at the moment construction of Line 4 was announced and at the moment information on the basic engineering project was unveiled, identifying the location of the future stations. We use a unique database containing all home buying and selling transactions in the Greater Santiago area between December 2000 and March 2004. The results show that the average apartment price rose by between 4.2 per cent and 7.9 per cent after construction was announced and by between 3.1 per cent and 5.5 per cent after the location of the stations was identified. These increases were not distributed evenly, but depended on the distance from the apartment to the nearest station. An indirect effect of this kind of capitalization is that property tax collections will increase if property is reappraised following the price rise. This effect is not negligible in magnitude and could represent 11 to 17 per cent of investment in the new metro line. This raises and interesting discussion on how the metro network extension is financed.     

地铁快线设计中几个技术问题的探讨和思考

以广州地铁3号线、东莞城市快速轨道交通R2线等的快线设计为例,分析地铁快线设计与一般地铁设计的区别,就地铁快线在设计中的几个技术问题进行总结分析,为今后地铁快线的设计提供借鉴和参考。     

浅谈地铁一号线施工阶段造价管理

本文介绍了**市地铁一号线建设过程中在工程计量、设计变更及现场签证方面的出现的重点问题,初步分析了产生问题的原因,联系工程实际提出了解决这些问题的措施,旨在为后续线路建设中提供借鉴与参考。     

城市轨道交通控制系统的思考

近年来城市轨道交通快速发展,一些大中小城市相继建设地铁线路,极大的缓解了城市的交通压力,为市民的生活出行带来了极大的方便。地铁相比较于大铁来说具有运行间隔短、密度高、车站密度集中等特点,运用于地铁运营中的自动化系统也具有自身独特的特点。本文就结合现有地铁线路所采用的系统,从对道路和列车两个方面的控制角度出发,对城市轨道交通当中的控制系统做简单的分析。