浅谈复杂地质中双壁钢围堰下沉控制技术

随着我国经济建设的不断发展,跨越大江大河的桥梁越建越多,而我国幅员辽阔,水文、地质复杂多变,水下基础工程施工不可预见的因素较多,施工难度大;以安徽省淮南孔李淮河大桥跨越淮河主航道桥工程为例,针对复杂水文地质条件,合理选择双壁钢围堰下沉控制的各种技术措施,并发明了一种实用新型专利的导向装置,大大提高了双壁钢围堰的定位精度,保证了双壁钢围堰顺利下沉,为今后同类型工程的施工提供了很好的借鉴意义。     

浅谈韩江双线特大桥跨东溪段双壁钢围堰施工技术

结合工程实践,针对双壁钢围堰的施工技术进行了总结,并就双壁钢围堰的设计、加工、拼装、下沉等方面进行了阐述.     

重载铁路深水超大双壁钢围堰施工关键技术研究

文章结合重载铁路深水超大双壁钢围堰施工实例进行研究,该围堰在工厂车间内制造完成后,运输至下河码头进行第一节拼装,拼装完成后采用气囊法实施下河,在下河区域进行临时锚固,通过前后定位船拉缆将围堰定位后进行后两次接高,围堰下沉后搭设封底平台完成围堰封底施工。文章重点对双壁钢围堰制造、拼装、下河、定位、封底等一系列施工的关键施工技术进行研究。     

武穴长江公路大桥14#墩双壁钢围堰施工关键技术

深水围堰施工具有施工难度大、工序繁多、质量控制要求高的特点,其施工工艺直接影响主桥的整体质量与工程进度,以武穴长江公路大桥14#墩为例,介绍了双壁钢围堰加工制造、现场拼装、下放、吸泥下沉、封底、切割拆除等施工关键技术与质量控制要点,可为同类工程作参考。     

桥梁工程桥墩基础双壁钢围堰施工方案分析——以萧山义桥大桥工程为例

双壁钢围堰施工广泛的应用于桥梁水下施工,是桥梁桥墩基础重要的施工技术,并且随着桥梁工程建设的增多,双壁钢围堰工程技术越来越成熟。本文主要以浙江省03省道萧山义桥大桥及南岸互通工程桥墩基础施工为例,按照双壁钢围堰施工步骤对工程方案进行了分析,重点讨论了双壁钢围堰具体施工方法、双壁钢围堰的组装及下水以及围堰内水下混凝土封底三个施工步骤,对围堰结构的加工及运输等步骤有所护忽略。文章内容实用性较强,对于工程建设具有重要的参考价值。     

桥梁工程桥墩基础双壁钢围堰施工

在桥梁水下施工中，双壁钢围堰施工得到广泛的应用，对于桥梁桥墩基础来说，这是一种重要的施工技术，双壁钢围堰工程技术随着桥梁工程建设的不断增多，逐渐呈现出成熟的趋势。本文主要以福建省三明市沙县境内沙溪特大桥桥墩基础施工为例，按照双壁钢围堰施工步骤进一步研究分析工程方案，重点讨论了双壁钢围堰的设计、组装及下水以及围堰内水下混凝土封底等主要施工步骤。     

双壁钢吊箱围堰制造质量监控的关键及方法

黄冈公铁两用长江大桥主塔墩基础采用双壁钢吊箱围堰法施工,其制造质量直接关系到主体基础的施工质量.通过制造过程中测量、各单元制造质量、整体组装质量控制.成果反映下固定导环偏差在24mm内,钢吊箱垂直度在1/500内.表明该方法快捷、有效,为同类钢围堰制造的质量监控积累了宝贵的经验.     

新白沙沱长江特大桥3号墩双壁钢围堰施工关键技术分析

新白沙沱长江特大桥主桥3号墩基础采用双壁钢围堰施工。为满足施工工期及渡洪安全,保证围堰在一个枯水期内完成施工,项目采用了先平台后围堰、钻孔桩与围堰同步施工的创新技术,圆满完成了既定目标。施工中通过优化导向装置、在刃脚设置高低挡板和围堰内外抛填堵漏等措施,保证了在陡坎裸岩区围堰着床的定位精度。通过设置分仓、优化导管布置等措施,保证了超厚超大面积围堰封底质量。一系列的关键施工技术的应用达到了快速施工、节约工期的目的,同时保证了洪峰期间主体结构的施工安全,为后续结构施工赢得了时间,为全桥按期完工打下了基础,对后续类似工程有很好的借鉴意义。     

超大体积钢围堰施工分析

文章针对钢围堰沉放、拼接、加固、拆除等一系列过程中的施工要点进行了论述。钢围堰进入入泥沉放过程时,采取浇筑夹壁混凝土、注(抽)水和围堰内吸泥三种方式并举辅助围堰下沉,并随时注意调整围堰姿态。文章提及的施工要点提高了钢围堰的沉放效率,降低了钢围堰施工过程中的结构风险,顺利完成了主体结构的施工。     

浅谈利用浮运双壁钢围堰施工桥梁深水桩基础

文章针对深水桥梁钻孔桩基础提出了浮运双壁钢围堰的施工方法。其中对双壁钢围堰的结构、施工工艺、劳力组织、机械设备作了详尽的论述,为类似工程提供可借鉴的施工方法。     

Development in Information and Communications Technology (ICT) Statistics at the Australian Bureau of Statistics

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.     

Value at Risk in the Suburbs: Eminent Domain and the Geographical Politics of the US Foreclosure Crisis

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.     

Towards a Theory of Serendipity: A Systematic Review and Conceptualization

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.     

Accountability of NGOs in Bangladesh A critical overview

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.     

Towards an Asian model of human resource management? A comparative analysis of China,Japan and South Korea

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.     

Ansätze und Ergebnisse anglo-amerikanischer M&A-Forschung

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.     

Introduction of New Technology with a Sound Transition of the Input-Output Structure

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.     

The Creation of the Office for National Statistics

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.     

What helps? Women engineers' accounts of staying on

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.     

论现代物流企业的发展观

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。