偏压隧道的施工方法

本文结合三江至南川线扩能改造工程项目中白塔寺隧道开挖施工情况,对工程中的浅埋偏压铁路隧道的施工方法进行论述,以供类似工程借鉴。     

葵坝路隧道反分析方法运用思考

随着我国公路隧道的发展,目前隧道工程都向长、大、深方向发展。如何获得地层材料性状参数和初始地应力场参数的问题成了人们认识隧道工程各种力学行为现象的主要障碍,反分析方法提供了解决这一问题的很好途径,文章结合深圳市葵坝路隧道工程情况,分别从施工前和施工中两阶段论述了反分析方法在隧道工程中的运用。     

浅析隧道工程中水文地质条件

由于修建隧道的周期较长,而且在修建隧道的过程中,存在很多因素会对隧道工程的施工产生影响,例如水文地质条件会在修建隧道工程过程中发生变化。这种变化很容易导致各种地质灾害的发生,引起周围生态环境改变。为了能够避免和降低隧道施工风险的出现,有必要针对隧道施工环境的水文地质条件进行探讨。以下主要是论述了隧道工程相关的地质条件,以及水文地质环境变化对隧道工程的影响,并通过实例分析提出了相应的施工建议。     

软弱围岩隧道开挖及支护关键技术研究

文章以平耶四号隧道工程为例,对软弱围岩条件下,隧道开挖及支护关键技术进行论述。期望通过本文的研究能够为同类工程提供借鉴参考。     

CRD法在大跨度隧道浅埋、软弱地层快速掘进中的应用

CRD法在大跨度隧道浅埋地段、软弱围岩地层施工中适应性强,支护结构简单,安全可靠,国内公路、铁路隧道施工广泛采用这个方法。文章论述了青海省西久公路拉脊山隧道设计的工程实例及CR工眩在工程的应用。     

论公路隧道工程的地质勘探

经济的快速发展加快了对公路的需求,使得我国公路建设得到了巨大的发展空间。作为公路建设的重要组成部分,公路隧道工程质量对于公路行车安全有着重要的意义。由于公路隧道工程地处较为偏僻、地质情况复杂,其勘探质量直接影响着公路隧道工程的施工安全及使用安全。加强公路隧道工程的地质勘探已经成文公路建设部门面临的又一重要问题。文中就公路隧道工程的地质勘探进行了简要的论述。     

隧道铣挖法在建筑群下掘进施工技术

本文以大连市莲花山隧道工程下穿既有隧道及地表建筑群施工为工程实例,详尽地论述了悬臂式掘进机铣挖法隧道掘进施工的技术特点、工程适用范围、工艺原理、施工工艺流程及操作要点等主要内容。文中所述技术内容针对性强并十分具体,有效地提高了工程质量,加快了工程进度。     

隧道工程项目的变更管理与控制方法

在隧道工程建设施工中,由于前期勘测不精细等原因,常出现原设计施工方案与隧道工程实际施工情况不符的现象,这时需要一种经济合理且能保证施工完全的方案代替设计方案,因此对项目的变更管理与控制尤为重要。文章结合乌沙隧道工程出口洞口滑坡治理工程变更处理情况,对隧道工程项目的变更管理与控制方法进行论述。     

浅埋偏压隧道下穿桥梁的施工方法探究

由于隧道出口段接近穿过的已建高架桥,因此,为了确保隧道在施工过程中的稳定性,必须采用浅埋偏压隧道下穿桥梁的施工方法。文章以某一高速公路出口的浅埋段隧道下穿既有桥梁段为研究对象着手进行论述,先对工程的基本情况进行了介绍,进而分析了浅埋偏压隧道下穿工程的数值计算方法,最后对浅埋偏压隧道下穿工程的数值计算结果进行了分析,希望对完善浅埋偏压隧道下穿桥梁的施工方法有所帮助。     

隧道工程旁通道施工关键工序及监理控制要点浅析

隧道工程建设的质量不仅关系到车辆行驶的安全,而且对于交通工程的建设和转型意义重大.隧道旁通道作为隧道建设的重点,其安全和施工流程关乎隧道建设的质量和正常使用.因此,围绕隧道工程旁通道施工进行论述,针对通道施工流程以及监理管理的重点进行分析,主要阐述了具体的施工手段以及监理措施,仅供参考.     

编组站调度信息对阶段计划的影响及计划调整研究

考虑编组站列车到达时间的不确定性，研究阶段计划解体方案的鲁棒调整方法，以提高阶段计划的鲁棒性。在研究编组站列车到达规律及其对阶段计划编制和执行的影响的基础上，分析通过调整解体方案提高阶段计划鲁棒性的必要性和可行性；由列车解体最早开始时刻、解体最晚开始时刻以及待解时间之问的关系，推导出相邻列车解体顺序调整的判定条件；定义了列车待解时间调整量的概念，给出不同情形下列车待解时间的最大调整量的计算方法；基于解体方案鲁棒调整的概念，提出基于随机模拟和经验公式两种解体方案鲁棒调整评价方法；最后给出解体方案鲁棒调整算法。     

The clash of managerial and professional logics in public procurement: Implications for innovation in the health-care sector

This article addresses the enactment of public procurement and its influence on adoption and diffusion of innovation, using a case study of public procurement of a low-tech medical device innovation in Swedish healthcare. Based on interviews and documentation, the article illustrates the various perspectives of the different professions involved in the complex task of setting the requirement specification for the tender. The technology identities of the medical device (innovation) are constructed and negotiated by the actors: procurement administrators, health-care professionals and suppliers within the adoption space. Examining the enactment of the procurement process as part of the adoption space is a way to deepen our understanding of the social component within public procurement.     

The bones of the body politic: thoughts on the Savorgnan de Brazza Mausoleum

This essay examines three examples of political treatment of the dead (specifically their bones) in the Republic of the Congo: the return of the remains of its capital's founder, Savorgnan de Brazza; the disappearance of the body of André Matswa, hailed by the people as their messianic ‘saviour’ guardian; and finally, the treatment of unidentified victims of the various armed conflicts that occurred during the years 1990–2002. These events can be analysed through the prism of two different historical perspectives: in terms of the moyenne durée, the treatment of Matswa's bones paved the way for the subsequent occurrences by creating a precedent; in the context of the ‘present of history’, the construction of a Brazza mausoleum is contemporaneous with official denial of the presence of human remains scattered across the capital city of Brazzaville as a result of armed conflicts. The comparative analysis of these historical configurations posits a set of circumstances whereby the bones become a symbolic buttress of the capital. The historical puzzle here is to understand how that which came together in claiming Matswa's bones becomes, in the context of democratization of the regime, an aesthetic sense of the ‘beauty of death’ as expressed by people when they see the shrine as their country's finest architectural accomplishment. Through the splendour of the monument, this aesthetic sense articulates the denial of the presence of the nameless dead.     

钻孔桩基础施工质量控制

文章介绍了巨龙大道跨线桥使用冲击钻机进行桩基础施工的全过程和保证灌注桩质量的控制技术:必须抓好围堰筑岛和桩位控制、护筒埋设,选择合适的钻机和泥浆比重、流量,抓好清孔和灌注水下混凝土质量,对成桩质量进行了检测。对钻孔桩的清孔标准、地质情况的判断、泥浆的净化等问题提出了见解。     

基于熵技术的农村公路施工质量综合评价

鉴于农村公路施工质量评价所存在的模糊性和随机性的特点,在建立涵盖整个施工质量影响因素为一级指标的施工质量综合评价指标体系的基础上,运用模糊数学理论,建立了二级模糊综合评价模型,借用熵的概念计算客观权重的方法,提出了施工质量模糊综合评价的方法。应用该方法对某农村公路项目质量进行评价,得出其评价结果为"良好"。最后,对该方法进行了定量解算,从而提高了施工质量评价的客观性和科学性,通过对结果的深入分析,可找出施工过程中存在的不足之处,从而为目标明确、有的放矢的改进施工质量提供理论依据,具有一定的实用价值。     

公民意识的法理解读——基于法治发展的主体要素考量

文章用人文主义的文化分析方法,指出了公民意识是特定法实践结构基础上产生的法律意识及其对法治发展的能动关系,并在与法律意识、法律权威、法律信仰、道德等相关概念的辨析中明确了其作为国家观念、法律传统、文化的不同层次属性。由此,从发展的角度看,法治系统又是一个包括制度要素和主体要素的运动系统。     

Swedish tribalism and Tanzanian entrepreneurship: preconditions for trust formation

The aim of this paper is to explore the relationship between entrepreneurship and the structure of the periphery. The objective is to reach an understanding of the entrepreneurial process within the context of the periphery, which is traditionally seen as a poor environment. The paper considers the concept of peripherality and identifies a process of gravitation that drains higher order services towards the core. However, this deterministic model does not correspond with the realities of the Scottish Highlands. The paradox is that new businesses are being created that appear to use old redundant peripheral values such as tradition. It is argued that it is the social construction of the periphery that produces this post-modern change. The qualitative methodology indicates the emergence of a new spatial paradigm of aesthetic consumption. Two indicative case studies are presented which show that entrepreneurship is the creation and extraction of value from the environment. Their businesses are the commodification of non-material and aesthetic values. Further analysis of these data demonstrates that entrepreneurs interpret their own version of the environment, rather than merely reacting to it. In turn, they enact this interpretation which forms the basis of their businesses.     

中世纪的骑士精神及其衰落

在学习西欧中世纪骑士制度过程中,了解到了骑士制度在中世纪历史上所占据的历史地位。骑士制度被誉为"封建制度之花",是社会中坚力量,骑士精神对国王到最低等贵族的统治阶级产生了巨大影响。庄园经济的衰落使骑士制度逐步瓦解;战争的平民化和雇佣军的盛行使骑士队伍萎缩;基督教的腐朽弱化了"骑士精神";不适应军事和战争变革的需要,几个方面解释在政治和社会上拥有如此高地位的骑士阶层从繁荣到衰落的原因。     

国内门户网站品牌塑造及模型构建——基于国内外门户网站的比较研究

互联网是全球化的虚拟化,虚拟体验直接影响顾客的认知与行为,从而影响网站的品牌。基于受众体验的国内门户网站品牌塑造模型的构建,是国内门户网站在参考国外先进的网站建设的成功经验的基础上,塑造适合国内门户网站的品牌策略和一项重要的竞争策略。     

Urban Informality and the State: Geographical Translations and Conceptual Alliances

Understandings of informality commonly derive from research undertaken in states perceived as lacking the capacity to regulate the practices of their populations. This Interventions forum aims to expand the geographical parameters of empirical research on urban informality. A more global approach, we argue, also necessitates questioning assumptions that undergird this concept—in particular the underlying conception of the state. In this vein, this collection of papers aims to rethink theories of the state through the lens of informality, and vice versa, to inform and refine the concept of informality through a more thorough understanding of states. In so doing, the contributions engage with concepts that have been central both to theories of the state and to the study of informality, namely governance, agency, legitimacy, sovereignty and legality. Following this introduction setting out our theoretical approach, the Interventions forum unites five empirical studies that discuss the nexus of informality and states in contexts that have been researched less extensively from this perspective, each tackling one of the above‐mentioned concepts. Based on these different entry points, the papers provide novel angles on a state‐theoretical understanding of informality. A concluding essay brings these approaches together, reflecting on the possibilities of translating concepts to different sites.