共查询到20条相似文献,搜索用时 828 毫秒
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室内土工试验是岩土工程学科的重要组成部分,是一种科学的研究手段。对于饱和土的动力特性试验,室内试验显示出了其经济合理和操作方便的优越性,从而促使了室内土工试验方法的不断改进。其中试样的饱和是进行饱和试验研究的关键,饱和方法的选择起着举足轻重的作用。现这种的指导思想,进行了论述。 相似文献
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马玉华 《中国高新技术企业评价》2015,(8):134-135
土的抗剪强度指标是通过土工试验测得的,目前室内试验常用的方法是直接剪切试验和三轴压缩试验,野外试验常用的方法是十字板剪切试验和大型直剪试验。文章分析了目前在室内测定土的抗剪强度的试验方法原理及它们各自的优缺点,介绍了在野外测定土的抗剪强度的试验方法,并梳理了抗剪强度试验指标的一般规律。 相似文献
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室内土工试验是岩土工程勘察工作中的重要组成部分,现通过多次实践,在参照相关理论的基础上,对目前勘察市场部分室内土工实验室的现状进行了剖析。提出了室内土工试验应注意的问题,分析了影响试验数据准确性的若干因素及改进措施,以便提高试验成果的精度。 相似文献
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室内水培植物的试验与研究 总被引:1,自引:0,他引:1
本文在对室内水培植物的研究进展进行综述,对柳州市水培植物的市场状况进行考察的基础上,进行植物水培的试验。结果表明,目前市场上的水培植物比较单一,专用营养液较少。本研究还对组合式水培进行了初步的试验、对室内水培植物应用需注意的问题进行了探讨。 相似文献
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水泥搅拌桩在卤阳湖盐渍软土地基的试验研究 总被引:1,自引:1,他引:0
渭南卤阳湖现代产业综合开发区属陕西省"十一五"规划建设的省级工业开发区之一,针对卤阳湖的地质条件和地基工程的设计要求,采用水泥搅拌桩进行地基加固,并进行了室内试验研究,试验结果表明水泥搅拌桩法处理盐渍土地基是切实可行的。 相似文献
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在进行膨胀土路基施工前,首先必须进行室内相关试验,确定施工控制指标,并进行铺筑试验路,研究施工工艺,提出指导意见,以确保高速公路施工质量. 相似文献
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Antonio F. Tavares 《Public Management Review》2013,15(5):587-608
Abstract This article seeks to identify which factors lead local governments to use corporate public sector organizations, particularly municipal corporations, for service delivery. The authors argue that local officials trade off bureaucratic costs of in-house production with agency costs of external delegation to municipal corporations when deciding how to deliver local public services. Econometric models are employed to test this explanation for the adoption of municipal corporations by 278 Portuguese local governments. The results indicate that organizational size, financial independency and fiscal surplus, as well as ideological concerns and the activity of local interest groups, drive choices of local governance structures. 相似文献
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根据国内有关土体原位测试原理的研究、应用情况,对比其优缺点,分析土体原位测试现在所处在的问题和今后的发展方向。 相似文献
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软土路基沉降处理研究 总被引:1,自引:0,他引:1
文章对特殊路段的软土特性进行了试验研究,对软土路基的变形计算、固结以及工后沉降计算给出计算方法,同时在高速公路建设中,针对软土路基的特殊性并结合工程应用提出了软土路基处理的一系列新方法。 相似文献
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基于柔性生产企业库内运作管理现状,分析库内存在的不合理因素并进行合理优化,提出相应整改方案和实施效果分析。 相似文献
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某水电站为砾质粘土心墙堆石坝,对该料场砾质粘土进行相关的土工试验,因为在心墙的填筑压实工程中很难控制砾质粘土的相关碾压标准,本文着重结合该水电站土料情况进行液塑限,不同击实功的击实特性研究两个方面的特性进行研究分析。 相似文献
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Flora F.T. Chiang Irene Hau-Siu Chow Thomas A. Birtch 《International Journal of Human Resource Management》2013,24(15):2762-2777
This study explored the state of human resource (HR) outsourcing in the Asian context, a particularly important subject given its rapid proliferation in Europe and North America, the inconsistent and limited evidence from prior research, and its strategic importance to the human resource management (HRM) function. Drawing on both quantitative and qualitative data and the transaction cost, resource-based, and institutional perspectives, we found that although respondents were generally favourable towards outsourcing, that in practice its adoption and diffusion were in a nascent stage in Hong Kong. Decisions to outsource were, by and large, incremental and experimental and influenced by a range of contextual factors (e.g., availability of in-house expertise, skills and creativity, strategic priorities, legislation (coercive), availability of external service providers, and industry and peer (mimetic) influence). Despite considerable pressure to cut costs, instead of outsourcing in the first instance, firms placed greater emphasis on maximising internal resource utilization (insourcing). Implications for practice and suggestions for future research are also provided. 相似文献
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粗颗粒土是指粒径在0.1mm以上的颗粒占一半以上的土,无粘性粗颗粒土的粒径在0.01mm以下的细粒含量不足5%,其中含有砂砾石、碎石等,所以可以自由的进行排水。而无粘性粗颗粒土的渗透性是一个重要的指标,且受到很多因素的影响,在本文中我们对无粘性粗颗粒土的渗透性影响因素进行研究分析,为无粘性粗颗粒土工程进行有利的探索。 相似文献
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Rainer Andergassen Franco Nardini Massimo Ricottilli 《Journal of Economic Dynamics and Control》2009,33(10):1779-1795
This paper investigates the research and development activity of heterogeneous and rationally bounded firms. The latter conduct this activity through in-house research and by collecting information originating in other firms’ spillovers. Thus, research and development activity owes both to independent searching and to interaction diffusing information. We study the conditions under which this idiosyncratic effort yields effects that have either local, system-wise negligible impacts or cumulate to generate significant aggregate ones. In the latter case, global effects feed back upon the incentive to innovate and therefore on the strength of local interaction as well as on autonomous research efforts. It is these dynamic forces that we model. We compare cases in which significant aggregate effects do emerge with cases in which they do not and study their outcome on innovation-directed investment and on long-term growth. 相似文献