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公路的建造过程中,碎石注浆桩是十分重要的施工环节,本文针对注浆桩技术水平现状、存在问题及解决方法进行探讨。 相似文献
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碎石注浆桩的施工技术由于具备操作简单、施工现场要求低、施工中噪音污染低、承载性能良好,因此在公路工程施工中具有广泛的应用,笔者结合自身经验,从碎石注浆桩的施工技术原理、施工工艺及特点等,探讨了碎石注浆桩施工技术的要点,望能对同行的施工带来一定的参考。 相似文献
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现代科技的发展,使公路工程中碎石注浆桩技术受到了广泛的关注,该技术一般是利用钻机通过设计直径,钻进一定的深度,形成孔,将碎石投入其中并进行注浆,而达到提高路基强度的目的.本文简单说明了碎石注浆桩施工技术的适用范围、技术特点等,并阐述了具体的施工过程和施工监测措施. 相似文献
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高压旋喷注浆法加固土质地基机理研究 总被引:1,自引:0,他引:1
本文对高压旋喷加固地层的机理进行了探讨,具体包括对土体的破坏作用、注浆体的成桩机理和水泥与土体的固结机理等,提出了高压旋喷注浆加固地层的主要作用是浆液与土发生物理化学反应生成水泥土。 相似文献
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在开展地铁盾构施工时,因设备原因需要开仓检修刀盘时受到诸多不利因素的影响,尤其是在面对不具备带压进仓富水砂卵石地层及邻近既有桥墩的环境下,需要通过施作隔离桩及袖阀管注浆加固保证既有桥墩安全、刀盘前端施作排桩并辅助降水保证掌子面地层稳定,从而创造安全稳定的进仓条件。在本文中,则结合盾构隧道工程实例,着重对其中的建立常压开... 相似文献
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The widely used Herfindahl index of concentration measures market power incorrectly in cases where a core of sellers faces a competitive fringe or where some subset of sellers is supply-constrained. These cases arise, for example, where domestic sellers face a small fringe of imports, or where import supply of any magnitude is limited by natural or artificial constraints. Returning to the theoretical roots of the Herindahl, this paper demonstrates how the index should be modified to deal with such circumstances. 相似文献
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Koen Dittrich Author Vitae Ferdinand Jaspers Author Vitae Author Vitae Finn Wynstra Author Vitae 《Industrial Marketing Management》2006,35(7):792-796
This paper introduces the topic of dealing with dualities, which is the theme of this special issue. We first give a short review of the notion of paradox and duality in management research. After this, we discuss the relevance of dualities for the IMP approach of analyzing industrial networks. Then, we briefly introduce the papers of and their relationship with the theme of this special issue. We conclude with some suggestions for future research. 相似文献
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《IT经理世界》2008,(6)
Here is the special issue celebrating the 10th anniversary of CEOCIO China. With it, we hope to offer you a roadmap of China's business landscape over the last decade. China has witnessed dramatic changes over the past ten years. This has occurred across the nation, but also reached down to an individual level: many people have, for example, bought their 相似文献
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李克见 《石油工业技术监督》2002,18(9):11-12
中原油田石油化工总厂是一个年处理量 12 0万t的燃料型炼厂 ,属于中小型炼油企业。多年来 ,石油化工总厂始终把产品质量视为企业的“生命线” ,不断强化质量管理职能 ,完善质量管理体系 ,提高产品质量 ,多次被河南省授予“质量信得过企业”、“河南省免检产品”等荣誉称号 ,产品远销河南、山东、四川等多个省市 ,走出了一条质量效益之路。中原油田石油化工总厂的经验证明 :中小型炼油企业只有通过内抓质量 ,外树形象 ,才能在激烈市场竞争中赢得自己的一份天地。源头控制 :企业生存的保证1 取全取准第一手原始资料原油是炼厂最基本的原材料… 相似文献
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H. WuM. Parlar 《International Journal of Production Economics》2011,133(2):562-577
In most existing literature in supply chain management it is assumed that the players possess complete information about the game, i.e., the players' payoff (objective) functions are assumed to be common knowledge. For static and dynamic games with complete information, the Nash equilibrium and subgame perfect equilibrium are the standard solution concepts, respectively. For static and dynamic games with incomplete information, the Bayesian Nash equilibrium and perfect Bayesian equilibrium, respectively, are used as solution concepts. After presenting a brief review of the static and dynamic games under complete information, the application of these two games in inventory management is illustrated by using a single-period stochastic inventory problem with two competing newsvendors. Next, we illustrate the Bayesian Nash and perfect Bayesian equilibrium solution concepts for the static and dynamic games under incomplete information with two competing newsvendors. The expository nature of our paper may help researchers in inventory/supply chain management gain easy access to the complicated notions related to the games played under incomplete information. 相似文献
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2009年美国最受欢迎的玩偶是什么?不是迪斯尼的卡通系列,也不是美泰的芭比,更不是孩之宝的变形金刚….而是奥巴马玩偶!美国史上第一个黑人总统的上任,肯定是当年全球最热的新闻之一,而一贯善于抓住社会热点商机的美国人,借助这个具有历史意义的事件大赚了一笔。 相似文献