路基棚洞设计与施工技术的研究

为保护老狐山隧道右线出口路基段的边坡和自然环境,减少开挖,采用棚洞的结构型式,避免由于大开挖引起的边坡或山体不稳定而产生的落石、滑坡滑塌等灾害发生。用midas数值计算软件对棚洞结构进行计算,得出棚洞结构的位移和应力,并和规范进行对比,结果显示棚洞结构是安全的。对高边坡工程的处治有一定的指导意义。     

城市轨道交通PPP的问题与对策

城市轨道交通PPP项目在推进过程中已遭遇了诸多瓶颈,如项目投资财务缺口大,社会资本投资门槛过高,社会资本以施工承包商为主导致市场结构单一,项目沿线土地综合开发受土地政策限制,城市轨道交通规划与城市规划脱节,项目难点多,等等.通过参考城市轨道交通PPP的投资建设实践,结合对各地城市轨道交通建设案例的研究与分析,尝试提出以下对策:城市轨道交通PPP与TOD结合,通过土地综合开发收益反哺;采用网运分离模式,降低对单个投资人的投资额度要求,发挥各投资人的专业所长;北上广深等一线城市地铁建设运营商走向二、三线城市;地方出台具体政策,突破经营性用地“招拍挂”的法律问题;实施过程中一事一议,加强支持;重视城市轨道交通规划与城市规划从宏观到微观层面的紧密结合;设立合理的调价机制等,以期起到抛砖引玉的作用.     

汕潮揭交通运输同城化现状剖析与发展对策研究

基于汕(头)潮(州)揭(阳)区域交通运输同城化发展要求,分析了区域交通运输发展的现状,总结了交通运输同城化发展在运输结构、运输服务以及体制机制等方面存在的问题,并有针对性地提出了具体对策和建议。     

Monitoring Human Activity in an Area Dedicated to the Protection of the Endangered Mediterranean Monk Seal

Mediterranean monk seal populations have declined dramatically and survive in subpopulations scattered throughout their original distribution. The National Marine Park of Alonnisos, Northern Sporades is the first marine protected Area dedicated to the protection of the species in the Mediterranean. A Monitoring and Awareness Project has been carried out in the area from 1993 to 2000, the results of which have produced a detailed profile of the human usage pattern of the Park and indicated a significant reduction of illegal activities in the area. The pattern of human usage has enabled the monitoring team to adjust their efforts in the Park over time and provided essential baseline data for future management. The combined monitoring and awareness efforts have contributed significantly to the conservation of the Mediterranean monk seal by successfully protecting pupping sites and reducing human-induced mortality of the species in the area.     

锚绞机带式制动器热-结构耦合分析

采用三维CAD软件SolidWorks建立了带式制动器组件的三维实体模型,对其进行瞬态温度场、应力场以及沉头螺钉失效机理等热-结构耦合分析,揭示了瞬态制动过程制动器和摩擦片内部温度场和应力场的分布规律,探讨了沉头螺钉的失效机理,为带式制动器的优化设计提供了依据.     

The visual impact of development in coastal zone areas

Abstract

The focus of this paper is theoretical, as well as methodological. It reviews previous studies of visual impact and reports research by the author on people's evaluation of the appropriateness of different man‐made facilities in different coastal‐area contexts and other environments. In this study, subjects were asked to react to slides developed through the use of landscape models and experimental facilities to simulate the appearance of a building in the landscape, while systematically varying the visual relatedness between the two. Specific interest centered on the variable of congruity vs. contrast between the appearance of the building and its landscape context, manipulated by co‐varying the attributes of color and size to create a five‐point scale of contrast/obtrusiveness. The hypothesis was that judgments of appropriateness, and to a lesser extent judgments of liking, would vary inversely with level of contrast. The role of two further variables, the functional significance of the building in its setting, and the character of the setting itself, was also investigated. The author reviews methodological issues involved where subjects respond to visual stimuli for purposes of judging change in visual quality. These methodological issues include: stimulus‐selection and problems of simulation, choice of response measures, and choice of respondents, and the treatment of individual differences. The author calls for development of standardized scales and indices such as “perceptually‐relevant environmental quality indicators.”     

城市综合客运枢纽进出站道路交通方案设计——以宿迁综合客运枢纽为例

为解决宿迁市综合客运枢纽与市内快速路网体系（上海快速路）快速衔接问题,对工程概况、技术标准、建设条件进行了分析,根据远景年交通量预测,对总车道边进行了计算,研究确定了城市快速路与综合客运枢纽如何进行快速转换的设计思路,并对总体方案进行了比选,选择出了较优的综合客运枢纽进出站交通方案     

并列双线船闸单侧闸墙长廊道输水系统布置及水力学模型试验研究

长洲三线四线船闸为目前国内规模最大的单级船闸。针对其并列布置方案,提出单侧闸墙主廊道闸底横支廊道的输水系统形式。通过水力计算分析及1∶32的水工模型试验研究,提出输水系统的具体布置,确定船闸不同运行方式下的阀门开启方式,得到输水过程的相关水力特性,解决了单侧闸墙廊道布置下闸室水流分布不均的问题。研究表明:提出的输水系统布置是合理可行的,各水力特征值均满足规范和设计要求,且输水系统布置于两线船闸之间,便于管理,减小了工程量,并可减少船闸耗水量。研究成果可为巨型船闸设计及船闸节水研究提供借鉴。     

在京津冀协同发展背景下北京市轨道交通规划发展战略的研究

着重在规划发展战略层面上,探讨京津冀城市群、大都市区与轨道交通发展的相互促进关系,分析区域轨道交通现状及相关规划,梳理北京交通圈层及各层次轨道交通系统规划,对北京市轨道交通规划实施提出建议。应注重城市空间布局与轨道交通的互动关系,大力发展区域快线。对于市域快线规划需要加强顶层设计,统筹考虑与既有地铁系统的结合方式。轨道交通作为综合交通系统的核心与骨架,将为京津冀协同发展提供支撑与引领作用。     

浅析2013版建设工程工程量清单计价计量规范的变化和特点

在工程建设中,为全过程控制工程造价,2012年12月25日发布的2013版《建设工程工程量清单计价规范》和各专业工程量计算规范,制定了一序列管理条文,建立起从招投标到竣工结算的工程造价全过程管理机制.为便于新计价、计量规范的贯彻执行,此文将2013版规范与2003版规范和2008版规范进行对比分析,进一步介绍2013版规范修改、完善和增加的内容及特点.推动2013版规范在建设工程中的应用.