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1.
预应力锚索技术是采取特殊手段将钢绞线转变成可以长期处于高温状态下的受拉结构体,利用该技术可以有效提升土体锚固的强度,对增强岩体稳定性具有重要作用。基于预应力锚索技术的功能性及作用,现今其在公路高边坡施工中已经得到广泛应用,为了更加清晰的了解预应力锚索技术的作用力,文章结合某公路应用预应力锚索技术施工成功的实例,针对预应力锚索技术在公路高边坡施工中的应用进行了解析。  相似文献   

2.
预应力锚索技术是采取特殊手段将钢绞线转变成可以长期处于高温状态下的受拉结构体,利用该技术可以有效提升土体锚固的强度,对增强岩体稳定性具有重要作用。基于预应力锚索技术的功能性及作用,现今其在公路高边坡施工中已经得到广泛应用,为了更加清晰的了解预应力锚索技术的作用力,文章结合某公路应用预应力锚索技术施工成功的实例,针对预应...  相似文献   

3.
预应力锚索应用的几个问题   总被引:1,自引:0,他引:1  
随着山区高速公路的大量建设,高边坡稳定问题日益突出。目前锚固技术在边坡工程中的应用越来越广泛,但是在边坡锚固工程设计、施工中尚有较多的技术和工艺问题值得讨论。文章结合工程体会针对预应力锚索适用的地层、预应力锚索的选型、预应力锚索的防腐设计、设计安全系数的选用、预应力锚索施工工艺、动态信息施工法等内容进行了论述。  相似文献   

4.
预应力锚索技术在公路高边坡施工中的应用   总被引:1,自引:0,他引:1  
随着时代的进步和社会的发展,我国交通运输事业发展迅速,公路工程数量越来越多。在公路工程施工过程中,高边坡稳定性无法得到保证,那么就需要对其进行治理,保证工程的施工安全。目前,在公路高边坡施工中开始广泛应用预应力锚索技术,经过实践研究表明,有着不错的效果。文章简要分析了预应力锚索技术在公路高边坡施工中的应用,希望可以提供一些有价值的参考意见。  相似文献   

5.
预应力锚索工程施工是一项地质条件变化复杂、关键工程隐蔽和施工技术难度较大的特殊施工作业。采用锚索加固高边坡,是岩土锚固技术在高边坡工程中的应用。由于锚杆、锚索的使用,使锚固地层产生压应力区并对加固地层起到加筋作用。  相似文献   

6.
随着时代的进步和社会的发展,我国交通运输事业发展迅速,公路工程数量越来越多。在公路工程施工过程中,高边坡稳定性无法得到保证,那么就需要对其进行治理,保证工程的施工安全。目前,在公路高边坡施工中开始广泛应用预应力锚索技术,经过实践研究表明,有着不错的效果。文章简要分析了预应力锚索技术在公路高边坡施工中的应用,希望可以提供一些有价值的参考意见。  相似文献   

7.
伴随公路工程建设事业的迅速发展,作为新型边坡加固技术,预应力锚索技术在公路高边坡施工中的广泛应用,不仅能够提升承载力,为工程建设提供可靠受力条件,还能降低工程造价,提升公路高边坡施工的整体质量。为此,文章通过工程实例对预应力锚索的作用机理、施工流程进行了分析,以期全面推动公路交通事业的可持续发展。  相似文献   

8.
改革开放以来,我国社会经济得到了快速发展,科学技术水平也日益发展,成功地推动了我国公路的蓬勃发展。高边坡作为公路施工中的重要部分,其施工质量的好坏必然会对整个公路施工的质量产生直接的影响。文章对公路高边坡预应力锚索技术的应用进行了分析,以此为同类工程施工提供可靠的参考依据。  相似文献   

9.
黎忠 《科技与企业》2012,(4):127+129
锚固技术可有效确保边坡稳定性,在目前高边坡或滑坡处治等施工中被广泛引用,本文通过结合某高边坡防护施工实例,提出锚固中锚索施工工艺及施工过程中的一些经验,以供类似工程锚索施工时参考、借鉴。  相似文献   

10.
预应力锚索施工技术是加固不稳定岩层的一种有效措施,在各种岩土工程中有着广泛应用,预应力锚索的锚固力大小直接决定着其应用效果,而锚固力大小主要取决于钻孔、灌浆质量。文章结合工程实例,分析复杂地质预应力锚索锚固力的影响因素,提出针对不同地质条件通过采用降水、跟套管和钢花管二次劈裂注浆等措施提高预应力锚索的锚固力的方法,为预应力锚索施工提供借鉴。  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.
Based on a review of established U.S. management journals (1995–2003), six schools of thought are identified within the Anglo-American M&;A research: “Capital Market”, “Principal/Agent”, “Industrial Organization”, “Organizational Behavior”, “Human Resources” and “Strategic Management”. The literature review shows that the definition of M&;A success, the methods applied, and insights from empirical research differ according to the respective school of thought. Empirical studies focus on the resource combinations of merger partners, the specific circumstances of merger negotiations, and on integration management as antecedents of merger performance. Unfortunately, empirical findings have not yet provided reliable explanations for M&;A success. Based on the current state of Anglo-American M&;A research, the authors discuss implications for business practice, identify research gaps, and propose areas for future research.  相似文献   

17.
We examine the general equilibrium repercussions associated with the introduction of new technologies, using the generalized Leontief system that allows technological substitutions. We show that an untested introduction of cost-increasing technologies in any industry may result in creating a non-productive technological structure that does not satisfy the Hawkins-Simon condition, following the autonomous dynamic adjustment process with structural transitions in the economic system. Therefore, we propose a practicable control scheme of introducing cost-increasing technologies that strictly avoids the creation of non-productive structures in all periods of structural transition, using the available information on the ex ante technological structure.  相似文献   

18.
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   

19.
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   

20.
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   

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