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1.
尹路源 《科技与企业》2014,(19):100-100
水泥混凝土路面接缝是公路结构中最薄弱的环节,目前我国大多数地区的水泥混凝土路面接缝普遍存在不同程度地破损现象。为确保公路工程的质量,必须提高对其施工技术水平。本文主要对水泥混凝土路面接缝常见病害及破损原因及施工技术进行了分析。  相似文献   

2.
将路面破损和路基病害成因类型对应分析,能够发现它们相互作用、相互影响。路基病害会引起路面破损,而路面破损又加快了路基病害的产生和发展,表现为路基压实度减小、含水量增大、裂缝松散体的产生。路面破损往往是路基病害的表现形式。  相似文献   

3.
破损水泥混凝土路面利用技术,在国外(如美国、日本等)已广泛采用,且机械化程度较高,技术比较成熟.在水泥混凝土路面修复改建工程中,采用多种处理方法,开发利用破损混泥土路面,从而使得即能够达到保证路面整体功能,又能降低工程造价和减少环境污染,取得了较好的效果.本文详细分析了一级公路路面的破损类型及其成因,介绍了一级公路路面的使用性能及各项的评价指标,为路面破损特征检测与破损率识别系统的研究提供了一定的依据.  相似文献   

4.
随着我国经济建设和交通运输业的发展,一级公路交通量越来越大,超载现象和重载车辆也越来越多,随之而来路面破损的现象也越来越严重,路面修复已成为许多公路部门越来越关注的问题.本文详细分析了一级公路沥青和水泥砼路面的破损类型及其成因,介绍了一级公路路面的使用性能及各项的评价指标,为路面破损特征检测与破损率识别系统的研究提供了一定的依据.  相似文献   

5.
本文基于某条道路交叉口路面破损现状调查,对交叉口路面破损病害的原因进行简要的分析,为某市道路交叉口路面的养护维修提供了依据。  相似文献   

6.
首先介绍水泥混凝土路面的施工工序,并对水泥混凝土路面出现的破损现象,探讨分析了水泥混凝土路面破损防治措施,以便达到防范于未然的作用,延长道路的使用寿命和提升服务功能。  相似文献   

7.
浅谈水泥混凝土路面病害的成因及防治措施   总被引:1,自引:0,他引:1  
王金库 《民营科技》2011,(3):246-246
随着我国经济建设的快速发展,交通运输业也面临着全新的机遇和挑战,由于交通运输量逐年增加,市政道路负荷日益加重,导致很多水泥混凝土路面有不同程度的破损。因此,深入研究水泥混凝土路面的病害成因势在必行。  相似文献   

8.
买俊杰 《民营科技》2010,(4):171-171
随着公路运输负荷的日渐加大,沥青路面破损严重,公路路面的处理修复成为重要问题。基于沥青路面特性和路面破损的成因分析,探讨了几种处理修复方法。  相似文献   

9.
我国道路修建水泥混凝土路面已有几十年的历史,早期修建的水泥混凝土路面,主要用于二、三级公路上,设计强度较低,这些路面在行车荷载和环境因素作用下大多出现了不同程度的破坏.近几年修建的水泥混凝土路面,质量有了很大提高,但因为施工、养护等原因,加之交通量的快速增长,水泥混凝土路面也出现了不同程度的损坏,因此现有路面的修补任务也越来越重.对于如何修补破损的水泥混凝土路面越来越成为现阶段路面技术发展中的一项重要内容.  相似文献   

10.
我国道路修建水泥混凝土路面已有几十年的历史,早期修建的水泥混凝土路面,主要用于二、三级公路上,设计强度较低,这些路面在行车荷载和环境因素作用下大多出现了不同程度的破坏。近几年修建的水泥混凝土路面,质量有了很大提高,但因为施工、养护等原因,加之交通量的快速增长,水泥混凝土路面也出现了不同程度的损坏,因此现有路面的修补任务也越来越重。对于如何修补破损的水泥混凝土路面越来越成为现阶段路面技术发展中的一项重要内容。  相似文献   

11.
This paper outlines the ICT statistical developments that the ABS has undertaken over recent years. These developments have been on both the supply side (ICT industry) and the demand side (use of IT by sector). The content of ABS ICT surveys has changed significantly over the last few years and are expected to develop further in line with industry changes and emerging policy needs.
Recent developments in household collections have been the inclusion of IT use questions in the 2001 Census of Population and Housing and in various ABS social surveys such as Children's Participation in Culture and Leisure Activities. Annual business IT use surveys are now conducted and include topics such as Internet commerce and IT security. Biennial ICT industry surveys are conducted to provide data on ICT production, imports and exports, ICT industry employment, performance and structure information. An Internet activity survey is run every six months and provides regional Internet access details and infrastructure details on Internet service providers.
A major development for 2002–03 will be the compilation of an ICT satellite account. ABS intends to produce an ICT Information Development Plan to guide its future statistical development work in the ICT field.  相似文献   

12.
Several US counties and local governments have recently considered a novel solution to the foreclosure crisis. They plan to use eminent domain to compel the owners of mortgage debt—and specifically of private‐label mortgage‐backed securities—to sell the debt to the government at a price reflecting the loan's market value. The government would then restructure the debt and resell it to new investors. The plans are striking because—in contrast to both development‐driven eminent domain and the federal subprime bank bailout—they would force investors to assume asset devaluation and increased long‐term risk. Notably, the plans have emerged as an instance of financialization‐focused politics in suburbs and suburban cities of color, specifically majority‐black and ‐Latino/a suburbs. Local support for the plans, we argue, is rooted in the long‐term disinvestment of these ‘suburbs of exception', which became targets of subprime lending and eventually sites where the ‘financial exception' has been localized. But these demographic shifts, fragmentation and fiscal pressures have at the same time created a suburban political terrain in which the plans have gained their strongest political support.  相似文献   

13.
Serendipity – the notion of making surprising and valuable discoveries – plays a major role in the success of individuals and organizations alike. Previous research has established the importance of serendipity and identified important individual- and organizational-level antecedents. However, the literature has been dispersed and the boundaries of the concept have been blurry, leading to a lack of conceptual clarity and structure, and thus limiting validity and managerial actionability. Based on a systematic literature review, I synthesize existing management-related research on serendipity and explicate the emergence and composition of serendipity in the organizational context. I first identify three necessary conditions that differentiate serendipity from related concepts such as luck or targeted innovation: agency, surprise, and value. Then, I draw from the literature on sensemaking, event-based theorizing, and quantum-based approaches to management to conceptualize the process of cultivating serendipity in the organizational context as a process of enabling potentiality and materialization, and develop a multi-level theory of (cultivating) serendipity. This conceptualization contributes to our collective understanding of how, why, and when (i.e., under what conditions) organizations can leverage the value in the unexpected, which opens up fruitful avenues for further research.  相似文献   

14.
NGOs in Bangladesh have been recognized as effective change agents in the socio-economic arena throughout the world. Their contributions in micro credit, non-formal education and primary health care are widely known. NGOs play a significant role in society. NGO accountability, as a result, has become a critical issue. NGO accountability in Bangladesh has been examined here in relation to patrons, clients and themselves. Of the three relationships only accountability to patrons is in a near satisfactory state. Accountability to clients is handicapped by lack of opportunities of beneficiaries to participate meaningfully in NGO policy making. Accountability to themselves is adversely affected due to the adherence to a strictly hierarchical system and the influence of founding and charismatic NGO leaders.  相似文献   

15.
There has been much discussion regarding the possible decline and weakening of national systems of human resource management (HRM). Yet, culture and institutions are often cited as the major stumbling blocks to this outcome. Such constraints may dissipate in the analysis, particularly if ‘regional clusters’ are considered where geographic and cultural closeness and ‘openness’ to similar economic pressures exist. In such cases, it might be postulated that convergence in HRM will occur. We argue that China, Japan and South Korea represent such a cluster. This article examines these countries, to see if a degree of convergence is taking place and if it is towards an identifiable ‘Asian’ model of HRM. A model of change is presented that distinguishes between levels of occurrence and acceptance. Details of the development and practice of HRM in each country are then set out. The article ends with a discussion and implications section and a brief conclusion.  相似文献   

16.
A new Office for National Statistics was created in the United Kingdom in 1996 following a series of developments designed to strengthen the relevance and integrity of statistics. This paper describes these fundamental changes and sets out a blueprint for future progress. It also sets current developments in the United Kingdom in an historical and international context.  相似文献   

17.
We have considerable understanding of the obstacles that women engineers encounter and the reasons that they leave the field, but we know less about what enables them to remain. Adopting an interpretivist approach, this article examines how a group of British women engineers in two FTSE 100 companies account for “staying on” in their male‐dominated work settings. We delineate four specific forms of help that facilitate women's retention in the field. We argue that exposure to help leads to women developing a habitus that enables them to continue working in engineering. To conclude, we draw on our findings to outline HR practices that will facilitate supportive relationships in the workplace and pave the way towards developing more positive organisational climates.  相似文献   

18.
杨明 《价值工程》2012,31(7):16-17
物流业经过诸多年的发展目前已经成为最热门的行业之一,物流企业的注册数量也与日俱增,达到前所未有的规模。毋庸置疑,任何企业都希望自己迅速做强做大,并成为真正现代物流企业的典型代表,要实现这一目标一个首要问题就是要解决现代物流企业的发展观问题。  相似文献   

19.
丛广英  乔炜君 《价值工程》2010,29(6):245-245
大体积混凝土的裂缝问题是实际工程中长期困扰工程技术人员的问题,其控制技术的研究是混凝土结构研究的热点问题,具有重大的学术价值和潜伏的工程背景。  相似文献   

20.
This paper focuses on the fashion industry, one characterised by issues such as dramatic shifts in the scale and power of major retail buyers in the market, the advent of retailer own brands, and the nature of sourcing and supply chain decisions, issues that are increasingly global in nature. The aim of this research is to explore the nature of relationships between UK high street multiple fashion retailers and their contracted suppliers, many of whom are entrepreneurial firms by most definitions of the term. Four core themes emerge from the literature and provide a framework for the research, namely, power, process, partnership, and people. The research approach was qualitative, and conducted over a period of twelve months. The paper ends with an agenda for future research.  相似文献   

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