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1.
龙思明 《价值工程》2012,31(11):91-92
悬浇梁合龙段施工所涉及到的工艺繁琐,其中劲性骨架施工是合龙段施工的关键环节。本文结合京石客运专线牛家堡48+80+48m现浇预应力混凝土连续梁悬臂法施工实践,针对合龙段施工中劲性骨架的结构设计、施工要点进行了必要的分析和阐述。  相似文献   

2.
杨生明 《价值工程》2014,(7):137-138
青荣城际铁路跨青银高速公路特大桥(48+80+48)m三跨变截面预应力混凝土连续箱梁,采用挂篮悬浇施工工艺,本文简明扼要的介绍了该梁0#块托架法现浇施工技术,对托架的设计、安装、预压、模板系统安装等工序进行了阐述。  相似文献   

3.
随着现代基础设施建设事业的持续快速发展,高墩大跨径悬浇梁施工迎来前所未有的重大机遇,如何科学有效运用多样化的施工技术控制策略,全面优化提升大跨径悬浇梁施工质量,成为业内广泛关注的焦点课题之一.基于此,文章首先介绍了大跨径悬浇梁合龙及体系转换,分析了高墩大跨径悬浇梁施工技术控制问题,并结合相关实践经验,分别从准确把握大跨...  相似文献   

4.
《价值工程》2018,(4):115-116
本文以广佛环城际铁路东平水道特大桥(60.75+100+60.75)m连续梁中跨合龙段连续梁为例,介绍了悬浇连续梁中跨合龙段的施工方法、施工顺序、影响因素,为以后同类连续梁的合龙施工提供了参考。  相似文献   

5.
周玉亮 《科技与企业》2012,(11):233-234
连续梁悬臂浇筑法,成为我国大跨度预应力混凝土连续梁施工的主要方法之一.其中悬灌梁段因梁段体积大、梁段多等原因,成为施工的重点部位,对整桥施工质量有重要影响.本文结合泽郎曲大桥工程实例,介绍了悬臂现浇连续梁桥箱梁悬灌梁段施工与控制技术的施工方法、质量控制以及施工时的注意事项.  相似文献   

6.
陶坚 《企业技术开发》2009,28(7):78-78,83
悬臂体系和连续体系梁桥已成为我国桥梁建设中基本的桥型之一,此类桥梁多采用悬臂浇筑法施工。悬臂浇筑法目前已有比较成熟的经验,但悬浇法施工工序多,工艺要求高,质量影响因素也较多,稍有不慎将留下质量隐患。文章对悬浇梁关键施工工序、控制要点及施工中关键技术问题的处理进行归纳、总结,为预应力混凝土连续梁桥施工质量控制提供一定的参考。  相似文献   

7.
俞明 《民营科技》2011,(2):235-237
悬臂施工连续梁桥已成为我国桥梁建设中基本的桥型之一,此类桥梁目前已有比较成熟的经验,但悬浇法施工工序多,工艺要求高,质量影响因素也较多。对悬浇梁关键施工工序、控制要点及施工中关键技术问题的处理进行归纳、总结,为预应力混凝土连续梁桥施工质量控制提供一定的参考。  相似文献   

8.
结合工程实例介绍预应力悬浇连续梁0^#块的现浇施工工艺,全面总结了从主墩与梁体的临时固结,现浇支架的搭设到预应力钢束张拉、灌浆全过程的施工工艺,提供了相应的施工方法、预应力张拉等各种技术数据,旨在对今后类似连续梁0^#块的施工起到借鉴作用。  相似文献   

9.
随着高墩大跨连续刚构及连续梁桥的广泛应用,使得挂篮悬臂浇筑法成为此类桥梁建设的重要选择,而其0#段、边跨平衡现浇段以及中跨合龙段的施工方案的选择又是挂篮悬臂浇筑施工的重要组成部分.文章针对桥梁墩高达107 m的湖美溪大桥(82+150+82)m预应力混凝土连续刚构桥之0#段、边跨平衡现浇段以及中跨合龙段现浇施工托架、吊...  相似文献   

10.
刘云生 《价值工程》2011,30(9):153-154
结合工程实例介绍预应力悬浇连续梁的现浇施工工艺,全面总结了从现浇支架的搭设、轻型菱形挂篮的拼装、主墩与梁体的临时固结,到分段预应力钢束张拉、灌浆、封锚全过程的施工工艺,提供了相应的施工方法、预应力张拉等各种技术数据,旨在对今后类似连续梁的施工起到借鉴作用。  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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