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1.
丁卫林  王卫 《民营科技》2008,(4):165-167
以武广客专线某大桥施工为例,根据工程的特点,重点介绍了水中钻孔平台的搭设、深水裸岩情况下的钢护筒埋设、钻孔工艺、混凝土灌注及相应的质量控制措施。  相似文献   

2.
本文介绍在深水、复杂地质结构条件下,解决桥梁桩基施工的对策,并通过水上钻孔平台搭设、钢护筒安装、水下冲孔等工艺,分析该方案的可行性,以解决施工中出现的技术问题。  相似文献   

3.
时伟 《价值工程》2019,38(3):86-89
通过东明黄河大桥水中桩基钢护筒的施工,了解黄河主河槽段桩基钢护筒施工过程的控制,了解深水、流水中长桩的钢护筒施工工艺,了解施工中的质量要点及质量控制。  相似文献   

4.
文章介绍了冲击钻施工桥梁基础,采用钢护筒跟进穿过砂卵石层的施工技术的基本要求。  相似文献   

5.
文章介绍了冲击钻施工桥梁基础,采用钢护筒跟进穿过砂卵石层的施工技术的基本要求.  相似文献   

6.
李刚 《价值工程》2019,38(34):124-127
南平埂埕大桥在大横镇埂埕村横跨闽江上游支流建溪,设置钢栈桥连接左右岸作为桥梁施工通道。河床覆盖卵石层或光板岩地层,桥位处常年流速大于2m/s,高水位流速达到4.3m/s,当地有建溪栈桥"无桥不跨"的流言。经方案施工设计,近河侧采用清理卵石后锤击沉桩,深水区及光板岩地层采用增设临时墩、钻孔跟进钢护筒及孔内填充混凝土成桩,有效解决了山区大流速条件下钢管桩施工复杂的技术难题。采用MIDAS2010建立栈桥计算模型,均满足10年一遇洪水条件下强度、刚度及稳定性要强。  相似文献   

7.
《价值工程》2019,(25):212-214
巴基斯坦深水港码头前挡墙桩基施工克服了桩基总算多,直径大,海上施工及地质条件复杂等困难,通过不断实践,针对连排式含锁扣钢护筒施工总结出行之有效的控制方法。  相似文献   

8.
《价值工程》2017,(8):144-145
主要介绍振动锤插打大直径钢管桩在青山长江大桥工程中的施工及应用实例。为解决吹填筑岛钻孔桩钢护筒施工问题提供简单的施工方案。  相似文献   

9.
文章对杭州湾天然气海域条件下钻孔桩快速施工技术进行了探讨,从钻孔平台搭设、钢护筒下沉、钻进、钢筋笼制作安装、水下混凝土灌注各个环节提高钻孔桩施工的工效,首次实现在天然气海域钻孔桩快速施工技术,为今后类似工程提供有益的借鉴。  相似文献   

10.
文章针对六潜高速公路太阳河1、2号大桥在库区内20m深水中(最深时20m,水位在6~20m范围变化)施工进行了以下相关总结:施工方案的选择;深水钻孔桩钢护筒的埋设;水上作业平台设计与施工;施工设备配套选型等,取得了良好的社会效益和经济效益。  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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