一种计算多个独立基础相互影响下的地基沉降量新方法

针对目前《建筑物地基基础设计规范》中介绍的“规范法”在手动计算多个独立基础相互影响下的地基沉降量时,“规范法”查表工作量大且效率低．文章在对地基沉降计算公式进行分析和进一步推导后,提出一种修正后的应力面积法,即利用求解多个基础荷栽在地基中产生的叠加后总附加应力面积与地基土压缩模量的比值来计算地基沉降量．结果表明：这种方法可以省掉大量的附加应力系数查表工作,提高计算效率,可以在计算地基沉降量问题中得到应用,但精度略低．     

地基附加应力计算的Excel电子表格法

本文详细阐述了矩形均布荷载作用下角点下地基附加应力计算的Excel电子表格法,并结合实例讲述了该方法的运用。实际应用表明,地基附加应力计算的Excel电子表格法可极大地提高相关内容的计算效率,并能避免出现计算差错。     

路桥斜交接续引发桥台地基的附加应力解析计算

桥台地基附加应力的计算是台后路基荷载对桥台影响分析的重要一环。在路桥过渡段设计中,为了综合考量地形、流域以及整体线路规划等因素,路基中心线与桥台台背斜交接续的情况时有出现。为了弄清斜交接续时桥台地基竖向应力分布与斜交角大小之间的关系,首先对斜交路基荷载分布进行分解,然后分别推导了任意斜交角下考虑路基宽高比影响的地基附加竖向应力半解析计算式,并借助Mathematica分析软件对不同斜交角下桥台地基附加竖向应力分布规律进行了讨论,最后与数值模拟结果进行对比,验证了计算思路及结果的准确性。为了减弱斜交路基引起的桥台地基附加应力的不均匀程度,建议路桥接续应尽量减小斜交角,特别是软土高填方地区。     

大面积荷载作用下附加应力的计算

本文针对电大学生特点,推导出了此时地基中任一点附加应力的式子,并结合大面积均布荷载作用下饱和地基土的沉降量的计算,给出了一种简便的计算方法。     

基础最终沉降量三维计算方法

针对工程计算中的分层总和法,通过待定参数数值积分技术,实现基础底面以下任意三维空间点实时积分计算,替代传统沉降计算中的查表与线性插值方法,并实现任意点附加应力的直接计算。根据积分计算结果与天然土层分层及地下水位埋深信息、孔隙比或土层压缩模量等相关信息,可以较精确快速计算出基础底面下任意点所在位置的薄层压缩量,并得到总压缩量。     

强夯法在处理湿陷性黄土地基中的应用

强夯法处理湿陷性黄土地基具有施工简便、快速有效、造价经济、质量可靠的优点.它对增强地基密实度、消除土层湿陷性、降低土层压缩性和提高地基承载力效果显著.针对某仓库地基强夯工程,对强夯加固效果进行分析,采用文中建议的公式计算夯后地基承载力,理论计算值与实测值基本吻合.     

基于基础变形对不均匀沉降的影响

在建筑物基底附加压力的作用下,地基内各点除了承受起土体自重应力外,还受到了附加应力的荷载。因此,在附加应力作用下地基土就会产生附加的变形,这就是引发地基不均匀沉降的"导火线"。本文通过引入Heaviside函数及有限元法建立起地基土与地基梁的内力微分方程模型。     

CFG桩技术应用于中高压缩性土层的实践探索

通过某高层建筑工程CFG桩复合地基应用的工程实例分析,表明了CFG复合地基的设计计算中β值在中高压缩性土层中取值范围可提高到0.85～1.0,验证了CFG桩地基处理对减小建筑物的沉降量有显著的作用,使得高层建筑与裙房间沉降差大幅度减少.     

高压注浆加固中、低压缩性土层实例浅析

以高压注浆加固中、低压压缩性土层,提高地基承载力特征值的工程为实例,通过对复合地基承栽力特征值的检测,说明用高压注浆的地基处理方法加固中、低压缩性土层是切实可行的。     

振冲法在地基处理中的应用

振冲法是利用振冲器强烈震动和压力水冲贯入到土层深处,提高地基强度的加固技术。作者结合工程实际对振冲法加固地基的方法进行了详细的论述分析,并通过工程的实施,证明了该处理方式对地基的加固效果是明显的,可供借用。     

卡思卡特城堡

It is worthy of noting that, whilst Crookston Castle witnessed the earlier and happier portion of Mary's variegated life,     

不同的吃喝玩乐

一、吃和喝吃苹果 eat an apple, 吃药 take medicine,吃糖 have some sweets,吃饭 have one's meals,吃馆子 dine out,吃惊 be surprised/     

漏洞百出的教育

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?     

只要努力,不要后悔

There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love.     

浅谈移民问题

Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject.     

Sister Carrie, an Adherent of Desires

Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities.     

Improvement of one-cycle controller by use of proportional integral differential controller

1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec…     

库克斯顿城堡

城堡, 是欧洲典型的建筑之一, 每个城堡都有一个美丽的传说或是一段历史。从本期开始, 我们将推出“城堡之旅”, 带各位读者去浏览、观赏欧洲各地的城堡, 开始一段文化与历史的旅途!     

The Reader Response Approach to Teaching of English Literature

During interview with English majors, it was found that a majority of students expressed disappointment with their experience of English literature classes. Students' dislike of learning English literature appears to be the major problem of teaching English literature in China. Reader response approach is a good way to solve this problem. In this paper, I explain the rationale behind the reader response approach, such as its origin, definition, features, assumptions, and strategies. Then I illustrate how reader response approach works as a teaching strategy by presenting several teaching models. At last I evaluate its usefuiness for teachers and present the advantages of reader response approach in Chinese context.