问题 单项选择题

某振冲碎石桩处理砂土地基,桩径0.8m,正方形布桩,桩距2.0m,经平板载荷试验,单桩复合地基承载力特征值为200kPa,桩间土承载力特征值为160kPa,计算桩土应力力比接近()。

A.6

B.3

C.2

D.1.8

答案

参考答案:B

解析:

de=1.13s=1.13×2=2.26m

fspk=[1+m(n-1)]fsk

200=[1+0.125(n-1)]×160

200=[1+0.125n-0.125]×160;

桩土应力比为复合地中,桩和桩间土承担竖向荷载的比例关系,确定桩土应力比n的可靠方法是进行复合地基载荷试验时,在桩顶和桩间土埋设压力盒,量测压力值,然后进行计算。

阅读理解

The holiday is coming to us. Finally, after months of study, you have some time to yourself. So, why not read a book? Well, some people will say, “Why do you like reading books? We have Internet. It offers a lot of more colorful fun. Books are history!” But I am sure you can learn a lot from books than Internet.

One clear reason is that a well-chosen book can give you a lot of wonderful  words, as long as you have a good dictionary, of course. Believe me; it’s far easier to get new words from a book or an article than it is from the TV or the Internet.

But another more important point is that books give you something that the Internet cannot. The general webpage (网页) is picture-heavy and the text is as easy to read as possible. While “easy” may attract (吸引) you, unluckily it’s not helpful for any long-term development of reading skills and the general language level. Because of that, reading on the Internet can’t take the place of reading books.

But perhaps the best reason is that just choosing what you read and doing it independently means that it’s something you do by and for yourself. You can choose what you want to read. It’s hard work, but you’ll find that what once seemed like a duty is now a pleasure.

小题1:Does the writer advise people to read books in their holidays?

小题2:What can people get from a well-chosen book?

小题3:What’s the general webpage like?

小题4:How many reasons for reading a book does the writer mention in the passage?

小题5:What does the writer want to tell us in the passage?

单项选择题