ITS中路侧停车管理系统方案的研究

针对目前我国城市中路侧停车管理模式，分析了路侧停车存在的必要性及当前管理中信息传递的不足，并分析了适应ITS(智能交通系统)发展的几种车位检测方法的优缺点，提出了一种比较先进而且经济实用的路侧停车管理系统方案，同时给出了系统构成及信息流向图。该方案把城市的路侧停车看成一个整体，并且可以和城市的停车诱导系统融为一体，对改善城市交通具有积极作用。     

城市道路路侧绿地植物配置模式探索——以杭州环城西路绿化景观为例

通过对杭州环城西路现场调查，研究其路侧绿地植物应用种类、数量特征，结果表明，应用于环城西路路侧绿地的观赏类植物共计116种，物种丰富程度较高。在此基础上，结合植物不同的组合、搭配，总结归纳了路侧景观7种典型性植物配置模式，并且分析各种配置模式具体的设计手法及特征。最后讨论了新时期道路景观绿化的趋势，旨在为今后我国城市道路绿地建设提供参考。     

双面W板安全护栏结构设计和静力仿真分析

基于我国护栏的设计条件,现设计出一款应用范围更广、防护性能更强的新型双面W板护栏。该护栏采用两侧W板和10号工字钢为立柱的新型结构,可布置于森林车运输地带的高危路段和道路中央隔离带处。应用等效力的计算方法分别对新型护栏和传统单面护栏进行护栏变形量和材料所受等效应力等方面的静力仿真分析。仿真结果表明:新型护栏在一般碰撞条件下满足防护要求,并较传统单面护栏变形量更小,确立新型护栏的可行性。     

浅谈广州市道路护栏挂花装饰

道路护栏挂花装饰,改善了护栏生硬刻板的视觉效果,平添了城市绿意和美意,得到广泛应用.以广州市道路护栏挂花应用为例,介绍了护栏挂花装饰的主要功能、特点和应用现状,并从容器选择、种植材料选择、种植基质选择、种植安装、养护管理方面探讨了护栏挂花营建技术,最后对存在的养护、安全及植物搭配等问题提出了建议.     

提高挤出模板使用寿命的途径

介绍了塑料挤出模板的结构型式，分析了模板损坏原因，提出解决办法，并叙述了切刀调整方法。     

林区微波站防雷技术探讨

本文详细介绍了设置林区几种同种型式的微波站的防雷技术特点有措施。     

纳米搪瓷铁艺护栏

目前社会上使用的金属护栏主要有铁质护栏和不锈钢护栏,铁质护栏多数是锻制或铸铁件,经表面喷漆、静电喷涂等防锈处理,其最大特点是防锈蚀性差,寿命短,铸铁护栏韧性差,易碰撞断裂,不锈钢护栏解决了防锈蚀的问题,但强度低,成本高。我们研制的纳米搪瓷铁艺组件属专利产品,该技术从根本上解决了原有产品和技术的难题和弊端,该产品的管内外     

浅谈路侧绿化带绿化工程

路侧绿化是公路基础设施建设和环境保护的一个重要组成部分。本文就地形和植物配置两个方面简要地介绍了路侧绿化工程的注意事项及目前道路绿化待解决的问题     

无拉杆工艺在护栏施工中的应用

指出了通过采用无拉杆钢模板完全解决护栏渗水通病,以此可有效提高护栏施工外观质量,且已在桥梁护栏施工领域中得到了广泛应用。以常合高速公路常熟北互通连接线工程高架主线桥现浇箱梁外护栏施工为依托,提出了无拉杆钢模板的设计思路和实际的施工工艺以及操作要点,以期为无拉杆钢模板在同类工程中的应用提供参考。     

HXD1型机车侧构组焊工艺优化

通过对侧构的结构、生产过程及生产过程中发现的问题进行分析与试验,合理地设置各部件的组装定位基准与组焊工艺,有效保证了侧构整体尺寸及侧构各部件的尺寸。     

Application of the vibration method with additional mass to timber guardrail beams

This study examined whether or not weight, density, and Young’s modulus can be accurately measured by vibration test without weighing beams for timber guardrails. Bending vibration tests with and without the concentrated mass were performed on small clear round bars without the pith of spruce and cedar and on actual size round bars with the pith of cedar for the timber guardrail. The following results were obtained. The vibration method with additional mass could be applied to the round bar as well as the rectangular bar. It is possible that resonance frequency was decreased by the sawn split in the horizontal tapping. It is believed that the free ends condition is easier to realize than the fixed ends condition for cross beams for timber guardrails. The weight of the cross beam for the timber guardrail could be accurately estimated by the vibration method with additional mass under several testing conditions.     

住宅景观设计常用规范案例分析

文章阐述了住宅景观设计时必须遵守的几个常用设计规范内容,包括消防车道、消防登高面设计、安全护拦设计和残疾坡道设计。通过分析深圳的项目案例,提出相应的景观处理方法,并探讨如何在住宅景观设计前期就把相关设计规范与景观设计融合起来,使效果美观,又满足相关规范的基本要求。     

Fixed-fixed flexural vibration testing method of beams for timber guardrails

Resonance frequencies of beams with various types of end supports were examined for flexural vibration. Rectangular beams with dimensions of 300 (L) × 25 (R) × 5 or 10mm (T) were used as the test specimens. Various compressing stresses were applied to the parts around both ends of a test beam and flexural vibration tests were conducted. The measured resonance frequency started to increase from the resonance frequency of a beam with simply supported ends and was stable around the resonance frequency of a beam with fixed ends as the compressing stress increased. The stable resonance frequency was lower than the theoretical value because perfect fixation of a beam to a post was difficult. From these results, the temporal change in resonance frequency itself, rather than the stable resonance frequency, is effective to examine whether a beam has enough strength as a guardrail.     

护坦与丁坝在林区沿河公路防护中的应用

研究分析了丁坝和护坦在沿河林区公路路基防护中的作用、防护原理、设置方法、应用条件和有效性问题。     

道路景观设计

本文详细论述了道路设计过程中景观的重要性,在各种不同条件下道路景观设计时应注意的事项.     

Behavior of center-bored round timber beams in center-point bending test

Due to the lack of large cross-section wood, the concern regarding the utilization of small-diameter logs from forest thinning has increased as a worldwide issue recently. Round shape is advantageous to efficient use of small-diameter logs, there is a difficulty of drying and preservative treatment. It is necessary to apply a new technique. In this study, center-boring technology was applied to improve the efficiency of manufacturing. The effect of a hole was not expected to make a significant effect on the flexural performance because the hole is located at the centroid of beam under bending moment. Unlike a round timber beam, the failure of center-bored round timber beam starts with a crack and is followed by a longitudinal split. When designing center-bored round timber as guardrail beam, additional strength reduction by flattening should be considered.     

城市道路花卉应用存在问题及其对策——以杭州市城市道路花卉应用为例

介绍了城市道路花卉的应用方式及作用，分析了城市道路花卉存在立地条件差、缺乏规划设计、人为影响大、种植及养护难度大等问题，提出了抓好绿化施工前期质量、做好植前设计、因地制宜适地适花、建立合理的管理体制等对策，并提出了养、护分开的建议。     

南京玄武大道快速化改造工程招标管理探讨

针对南京玄武大道快速化改造工程的具体情况和特点,通过对本工程的招标管理研究,结合相关法规及南京市政公用工程项目招标的特点,总结市政公用工程项目招标相关流程及注意事项;并对招标项目的回访中发现的不足提出改进建议。     

A computer model to differentiate skidder and cable-yarder based road network concepts on steep slopes

Road spacing on slpes depends on the underlying off-road transportation technology. One major decision in road network planning is to determine under what terrain conditions ground- or cable based extraction systems should be applied. The present investigation aims to develop a road spacing model for steep slope conditions and to implement a total cost model for skidder and cableyarder based road network concepts. The study analyzes transportation and road geometry to specify the relationship between road density, slope gradient, and road spacing. Production functions for skidder and yarder-systems make it possible to derive transportation cost as a function of road density and slope gradient. A total cost function integrates road building cost, harvesting strategy, and production economics to derive optimal road density for the two network concepts. The difference between the cost levels at optimum road density is an indicator for differentiating cable and skidder-based extraction systems. The model was implemented as a Visual Basic add-in for Microsoft Excel spreadsheet software. This flexible approach makes future adaptations and changes very easy due to the modular concept. The validity of the model is limited to the production functions of the underlying off-road transportation technologies. Future work needs to develop production functions for the state-of-the-art technologies and to improve the road building cost model.