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1.
蒋本俊 《价值工程》2015,(20):104-107
武汉二七长江大桥武昌岸引桥上跨武九铁路,桥式布置为(45+60+45)m三跨变高度预应力混凝土连续梁桥,连续梁S2号主墩毗邻既有线,挂篮需跨越既有线上空施工,安全风险高、施工控制难度大。针对重大安全风险,采取施工天窗封锁要点计划,制定钻孔桩塌孔、挂篮坠落、物体打击、0号块支架拆除应对措施,保证了该桥安全、优质、按期完成,确保了施工过程既有线安全运营。  相似文献   

2.
文章介绍了郑西客专客运北环线跨越高等级公路、电气化铁路悬灌连续梁施工采取的各种安全防护方案,在既确保既有线运营安全,又满足施工需要的情况下,顺利组织完成施工的成功经验,为今后类似工程的施工提供借鉴.  相似文献   

3.
针对现阶段新(扩)建铁路客运专线临近既有线或高速公路深基坑施工防护需要,结合新建铁路兰州至中川机场线黄羊头碱沟特大桥4#、5#墩深基坑施工过程中采用的钻孔排桩支护设计与施工技术的总结,重点介绍了临近既有线或高速公路的深基坑支护方案的选择、钻孔排桩支护设计和具体施工流程与要求。该技术对类似临近既有线或高速公路深基坑施工具有较好的指导意义。  相似文献   

4.
针对现阶段新(扩)建铁路客运专线临近既有线或高速公路深基坑施工防护需要,结合新建铁路兰州至中川机场线黄羊头碱沟特大桥4#、5#墩深基坑施工过程中采用的钻孔排桩支护设计与施工技术的总结,重点介绍了临近既有线或高速公路的深基坑支护方案的选择、钻孔排桩支护设计和具体施工流程与要求。该技术对类似临近既有线或高速公路深基坑施工具有较好的指导意义。  相似文献   

5.
以新余市仙女湖跨铁路88+150+88米连续梁桥的设计和施工监控为实例,阐述了跨铁路大跨度预应力砼连续梁桥悬臂施工的监测与控制的方法和内容要点,并总结了这类桥的施工控制要点及优化设计方案,以便在实际设计和施工监控中得到科学的应用.内容包括施工监控的必要性和方法,施工控制内容要点,及设计优化建议.  相似文献   

6.
介绍铁路既有线施工安全防护技术及防护作业要点,保证既有线路基质量及行车安全。本文详细介绍了既有线桥梁基础施工的安全防护要点。  相似文献   

7.
《价值工程》2018,(7):138-140
以张家口至呼和浩特铁路怀安站特大桥(60+100+60)m连续梁墩顶转体跨越既有京包铁路施工安全防护为实例,针对京包铁路分离式高填方路基特点,分析了施工过程中面临的主要安全风险和应对措施,介绍了各类防护类型及防护对象,阐述了通过方案优化规避安全风险的重要作用,有效地解决了连续梁墩顶转体上跨干线铁路的施工安全防护难题。  相似文献   

8.
既有线铁路增建立桥施工均需要线路加固,如何确保铁路行车及施工安全、施工质量、进度及达到预期的施工效果是施工人员关注的问题,文章结合以往工程对D型便梁架空加固线路施工进行探讨。  相似文献   

9.
宁德特大桥245~#~248~#墩采用三跨连续梁(48m+80m+48m)跨越罗宁高速公路,施工过程中为保证高速公路的安全运行,采用了安全防护桥的方案。文章主要介绍了安全防护桥的施工技术及安全保证措施。  相似文献   

10.
在施工过程中,10kV线路会受到诸多因素的影响,需要采取一系列的控制措施,保证配电网10kV线路施工的质量。文章分析了配电网10kV线路施工的特点与质量控制措施,提出应结合工程具体情况,制定科学的施工方案,同时采取控制措施,保证工程整体施工质量。  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.
En este estudio se analiza el incumplimiento del salario mínimo durante el periodo 2003–2012 en diez países de Europa central y oriental con salario mínimo obligatorio nacional. A partir de los datos de EU‐SILC y la metodología propuesta por Bhorat, Kanbur y Mayet (2013), se cuantifica la incidencia y magnitud del incumplimiento. Se realizan análisis de regresión sobre determinantes individuales, laborales y macroeconómicos. Aunque la incidencia permanece relativamente baja, los trabajadores a los que se dirigen las políticas de salario mínimo parecen los más expuestos a su incumplimiento. Con el tiempo, una mayor incidencia se asocia a una razón más alta entre salario mínimo y salario medio.  相似文献   

13.
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   

14.
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   

15.
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   

16.
While a growing body of research analyses the functional mechanisms of the cultural or creative economy, there has been little attention devoted to understanding how local governments translate this work into policy. Moreover, research in this vein focuses predominately on Richard Florida's creative class thesis rather than considering the wider body of work that may influence policy. This article seeks to develop a deeper understanding of how municipalities conceptualize and plan for the cultural economy through the lens of two cities held up as model ‘creative cities’ — Austin, Texas and Toronto, Ontario. The work pays particular attention to how the cities adopt and adapt leading theories, strategies and discourses of the cultural economy. While policy documents indicate that the cities embrace the creative city model, in practice agencies tend to adapt conventional economic development strategies for cultural economy activity and appropriate the language of the creative city for multiple purposes.  相似文献   

17.
Despite the establishment of high-tech multinational enterprises (MNEs) in Ireland since the late 1950s, the country did not succeed in closing the technological gap with most of its EU counterparts. The weak National System of Innovation (NSI), and in particular low business and government R&D levels, combined with a lack of research and technology linkages between MNEs and indigenous firms, explain these poor results. However, the Shannon region in the West of the country presents some specific institutional characteristics that could theoretically make the region a strong technological enclave. The various actors in the region - i.e. the administrative, financial, political and research institutions, as well as the business organizations - have indeed infused a new type of economic development. After a brief review of the available concepts and models articulated around these actors and their interrelationships, the paper analyses whether the Shannon region, taken as an illustrative example, mirrors a specific economic and technological localized setting. The study is based on a survey of indigenous and foreign firms.  相似文献   

18.
This article reviews discrimination and diversity research published in Human Resource Management (HRM) over the past 60 years. While discrimination and diversity are very different constructs, it is often informative to study them together, because when people recognize each other's diversity, this can result in bias, stereotyping, and discrimination. We conducted bibliographic searches for terms related to discrimination and diversity as well as a manual search through every title and abstract published in HRM over the last 60 years to assess article relevance. The search resulted in 135 research articles with 136 unique studies (i.e., samples) which are reviewed in this article. Sex and race are the demographics that have been examined the most in HRM, while religion has been examined the least. Moreover, the number of studies examining lesbian, gay, bisexual, transgender, and queer (LGBTQ) employees in the workplace in HRM has grown quickly within the past 10 years, culminating in a recent meta‐analysis. Our review looks at some of the earliest research published, the most recent research published, and the overall trends we identified in the research over the years for both discrimination and diversity articles. We then make future research suggestions and recommendations to advance the study of discrimination and diversity in the coming years.  相似文献   

19.
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   

20.
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   

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