共查询到20条相似文献，搜索用时 515 毫秒
1.
邹慧红 《中国教育技术装备》2010,(21):87-88
公路边坡是公路路基的重要组成部分,它的稳定程度直接影响到公路的运营状况。公路路基边坡防护处理是公路设计施工、养护管理的重要内容。结合公路路基边坡破坏表现形式分析,系统探讨公路路基边坡防护处理的几种新型方法,可为公路路基边坡设计和施工提供理论参考。 相似文献
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针对雨水较多的南方地区塔吊基础的特殊设置形式,建立数学计算模型,运用力学的方法进行强度和稳定性验算,并采用C#程序设计语言进行软件设计,从而进一步完善PKPM施工软件塔吊基础的设计验算模块,为施工验算提供方便. 相似文献
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通过对目前高层建筑塔吊基础荷载、计算工况和不同设置方式的分析,提出了三种塔吊基础设置方式的设计计算方法和施工注意事项。 相似文献
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在公路的修建和改建过程中,经常会遇到湿陷性黄土路基。黄土的湿陷性对公路工程会造成严重的危害。必须进行加固处理。该文介绍了强夯法处理路基的原理和适用范围。结合工程实例给出了强夯法处理湿陷性黄土路基的设计参数、施工工艺流程及施工的要点和施工质量控制要素等。 相似文献
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在公路的修建和改建过程中,经常会遇到湿陷性黄土路基。黄土的湿陷性对公路工程会造成严重的危害,必须进行加固处理。该文介绍了强夯法处理路基的原理和适用范围,结合工程实例给出了强夯法处理湿陷性黄土路基的设计参数、施工工艺流程及施工的要点和施工质量控制要素等。 相似文献
6.
张雷 《开封教育学院学报》2015,(4):259-260
路基是公路施工过程中的主体工程,也是对公路工程质量产生直接影响的部分,路基施工质量的优劣决定了公路工程的整体质量。路基施工的过程中,必须科学选择施工技术,保证施工质量。基于公路路基施工要求,分析路基防护、加宽路段新旧路基填料的选择、软土路基处理、路基排水、路基压实、填方施工、路堑开挖、施工准备等施工过程中常见的施工技术,保证路基施工完成后符合相关规范及设计要求。 相似文献
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赵明雨 《石家庄铁路职业技术学院学报》2018,(2)
本文结合大白杨沟2号大桥工程实例,介绍先简支后连续梁体转换施工技术和高桥墩塔吊翻转模板施工方案。施工中严格遵循工艺流程,把握关键技术,严把施工质量,取得良好施工效果。实际工程应用表明,该施工技术不仅能保证桥梁的施工质量,节约施工成本,而且可以提高大跨高墩桥梁施工建设效益,缩短工期。 相似文献
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我国地域的辽阔使得公路建设施工中所面临的地质条件复杂、需要施工企业以科学的设计与严格的施工管理来保障路基施工质量,为公路工程整体施工质量、适用寿命与行车安全奠定基础.高原冻土路基作为公路施工中所面临的重要的路基形式,其施工管理对工程整体质量有着重要影响.文中就高原冻土路基的施工管理工作重点、技术要点等进行了简要的论述与分析. 相似文献
9.
张世宇 《晋城职业技术学院学报》2010,3(3):53-54,74
高速铁路路基沉降控制是高速铁路设计和施工中所要考虑的主控因素,所以在大规模施工前,均应进行路基沉降观测,结合沉降观测数据进行路基沉降量预测。而路基沉降预测常用方法涉及多个学科和领域的交叉运用,本文深入浅出的介绍了对高速铁路路基沉降预测的几个典型方法,主要有曲线法、灰色系统法、BP神经网络法和遗传算法。 相似文献
10.
在系统分析红砂岩工程特性以及与水的相互作用关系的基础上，结合红砂岩路基的施工处理方法以及三种典型红砂岩高路堤的沉降观测结果的分析研究，探讨了红砂岩作为高路堤填料的可行性、施工方法的合理性以及不同红砂岩路基的沉降稳定性. 相似文献
11.
罗艳萍 《读与写:教育教学刊》2008,5(6)
The communication of people partially is the communication of cultures. Culture has a direct effect on international commercial activities in all aspects. Different conceptions about time, space, equality, law and the like, lead people to deal with things in different ways. So to know cultures of the counterpart is to facil-itate our enterprises so as to have a smooth and successful communication in commercial activity. 相似文献
12.
Richard Denner 《海外英语》2007,(4):14-15
Rosco and I wait for the fishermen to return.I sit at a wooden bench near the store at Mt.Baker Resort and watch the clouds change shape. Rosco has my belt around his neck and an eight foot tow chain hooked to a tree. Dogs must be on a leash. Ducks and rabbits are loose. 相似文献
13.
邱崇丙 《唐山师范学院学报》2014,(1):21-23
汉字的六书,《说文》对“转注”一类,语焉不详。后世学者提及转注,也仅限于许慎所举出的例字。《汉字例说》一文,作者从转注的角度综合考虑,对部分现代常用字作了分析,跟传统的解释有所不同。希望能抛砖引玉,互相切磋,以推进学术研究。 相似文献
14.
Given a graph G,a subgraph C is called a clique of G if C is a complete subgraph of G maximal under inclusion and |C|≥2. A clique-transversal set S of G is a set of vertices of G such that S meets all cliques of G. The clique-transversal number, denoted as TC (G), is the minimum cardinality of a clique-transversal set in G. The clique-graph of G, denoted as K (G), is the graph obtained by taking the cliques of G as vertices, and two vertices are adjacent if and only if the corresponding cliques in G have nonempty intersection. Let F be a class of graphs G such that F={G|K(G) is a tree}. In this paper the graphs in F having independent clique-transversal sets are shown and thus TC (G)/|G|≤1/2 for all G ∈ F. 相似文献
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《海外英语》2007,(5):10-11
Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help? 相似文献
18.
陈美曦 《山东教育学院学报》2008,23(2):103-107
Different nations have different social cultures, and the social culture of every nation is developing with the development of the nation, language is greatly influenced by social culture, which enables language to possess national and historical characteristics. Word is the smallest, independent, meaningful linguistic unit of language. It can well reflect the national and historical characteristics. From synchronic aspect, the social and cultural influence on word meaning is mainly embodied in conceptual and associative meanings of word. The incorrespondence of word meaning is a phenomenon that exists in both conceptual and associative meanings of word among different languages. From diachronic aspect, the development of social culture causes some changes of word meaning to some extent. Therefore, social culture plays a key role in vocabulary learning and mastery of a language. 相似文献
19.
Rachel Zupek 《海外英语》2007,(11):40-41
我们绝大部分人都同意一件事情——我们喜欢金钱。但是你对金钱的喜欢之情足够到让你创立一份事业么?.财富通常被人忽视,主要在于人们不能真正了 相似文献
20.
YANGShiguo 《重庆大学学报(英文版)》2004,3(1):86-88
The problem on the geometrc inequalities involving an n-dimensional simplex and its inscribed simplex is studied. Aninequality is established, which reveals that the difference between the squared circumradius of the n-dimensional simplex andthe squared distance between its circumcenter and barycenter times the squared circumradius of its inscribed simplex is not lessthan the 2(n-1)th power of n times its squared inradius, and is equal to when the simplex is regular and its inscribed siplex is atangent point one. Deduction from this inequality reaches a generalization of n-dimensional Euler inequality indicating that thecircumradius of the simplex is not less than the n-fold inradius. Another inequality is derived to present the relationship betweenthe circumradius of the n-dimensional simplex and the circumradius and inradius of its pedal simplex. 相似文献