浅谈钢板桩在深基坑支护中的应用

以天津市南港工业区某雨水泵站出水管顶管井及进水箱涵基坑工程为例,通过对地质条件和支护方案进行分析比选,确定采用钢板桩支护方案。本文结合工程实例,讨论深基坑支护中钢板桩的实施方法,并提出了钢板桩支护结构施工便捷、节约材料的优点。     

钢板桩基坑支护施工技术

文章结合工程实际情况,阐述钢板桩基坑支护的施工技术。通过对深基坑工程周边环境及施工难点进行分析,选择钢板桩支护方案,并结合工程具体环境采取相应的施工技术,达到了预期目的。     

钢板桩基坑支护施工技术

文章结合工程实际情况,阐述钢板桩基坑支护的施工技术。通过对深基坑工程周边环境及施工难点进行分析,选择钢板桩支护方案,并结合工程具体环境采取相应的施工技术,达到了预期目的。     

钢板桩基坑支护施工技术

文章结合工程实际情况,阐述钢板桩基坑支护的施工技术。通过对深基坑工程周边环境及施工难点进行分析,选择钢板桩支护方案,并结合工程具体环境采取相应的施工技术,达到了预期目的。     

钢板桩围堰施工质量控制

钢板桩围堰施工是指运用钢板桩在基坑施工的过程中起到围护隔离作用实现基坑支护以便进行基坑施工过程的作业方法。钢板桩围堰施工法具有施工速度快、具有一定抗倾覆能力、止水效果好、占用作业空间小、施工作业方便的特点。广泛应用于桥梁工程、码头、导流堤、地基、防渗墙、挡水墙基础开挖等临时性防护工程。以徐寨沙颍河大桥主墩基础施工为例,全面阐述钢板桩围堰施工的质量控制方法。     

钢板桩围堰在某特大桥主墩施工中的应用

本文以某公路项目特大桥291#墩为例,对其钢板桩围堰的施工进行研究,采用MIDAS/CIVIL软件建立钢板桩与内支撑有限元计算,对钢板桩入土深度、封底混凝土厚度进行验算,对钢板桩结构内力进行分析,并对施工工艺进行了研究梳理,施工过程监测表明在围堰施工承台期间,结构安全可靠,且在施工过程中保持稳定.采用钢板桩围堰进行基坑支护,保证了工程的质量、进度、成本要求,可为同类施工提供借鉴.     

钢板桩在泵站基坑支护中的应用

基坑支护结构形式越来越多，针对不同的基坑特点，选择不同的支护方式，可以起到事半功倍的效果。文章介绍大凌河污水泵站工程采用钢板桩支护基坑的工程实例，着重叙述Ⅳ型拉森钢板桩和水泥土搅拌桩的施工工艺与质量控制的要点，并对基坑监测结果进行分析，可供同类工程参考。     

钢板桩支护在桥梁深基坑施工中的实践

为了保证钢板桩类型支护结构在桥梁项目深基坑建造中有良好的应用,应认识到钢板桩类型支护结构的重要性以及优势,并能了解钢板桩类型支护的特点和深基坑支护的具体需要,制定相应的支护施工方案。就钢板桩类型支护结构在桥梁项目深基坑建造中的应用进行了分析。     

拉森钢板桩在市政污水整治施工中的运用

通过某工程实例,介绍了拉森钢板桩在市政污水管线支护施工中的运用,并对其设计方法和施工措施进行分析。     

软土地基下拉森钢板桩的应用

拉森钢板桩是一种可重复利用的施工设备,因其具有高强度、止水效果好、施工效率高,且对周围环境影响较小等特点,在软土地基施工中占有很大优势。文章结合工程实例,论述了拉森钢板桩在软土地基下基坑支护中的应用,以及拉森钢板桩在工程中的设计计算方法,详细介绍了拉森钢板桩的施工工艺技术及施工中可能遇到的问题及处理。     

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.     

Incumplimiento del salario mínimo en Europa central y oriental

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.     

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.     

Cultural Economy Planning in Creative Cities: Discourse and Practice

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.     

Input/output ranges and performance: an examination of US machine tool producers

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.     

Sixty years of discrimination and diversity research in human resource management: A review with suggestions for future research directions

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.     

Multinomial distributions applied to random sampling of particulate materials

When sampling a batch consisting of particulate material, the distribution of a sample estimator can be characterized using knowledge about the sample drawing process. With Bernoulli sampling, the number of particles in the sample is binomially distributed. Because this is rarely realized in practice, we propose a sampling design in which the possible samples have a nearly equal mass. Expected values and variances of the sample estimator are calculated. It is shown that the sample estimator becomes identical to the Horvitz–Thompson estimator in the case of a large batch-to-sample mass ratio and a large sample mass. Simulations and experiments were performed to test the theory. Simulations confirm that the round-off error due to the discrete nature of particles is negligible for large sample sizes. Sampling experiments were carried out with a mixture of PolyPropylene (PP) and PolyTetraFluorEthylene (PTFE) spheres suspended in a viscous medium. The measured and theoretical variations are in good agreement.