问题 单项选择题

某场地中土层自0~4.0m为黏土,fak=250kPa,Es=9MPa,γ=18kN/m3,4~6m为淤泥质土,fak=70kPa,Es=3MPa,场地中有独立基础,底面尺寸为2m×2m,基础埋深为2.0m,正常使用条件下荷载效应标准组合时基础顶面的荷载为800kN,承载能力极限状态下荷载效应基本组合值为1000kN,据《建筑地基基础设计规范》(GB50007—2002),软弱下卧层承载力验算的结果为()。

A.不满足,承载力为133kPa

B.不满足,承载力为167kPa

C.满足,承载力为133kPa

D.满足,承载力为167kPa

答案

参考答案:C

解析:

根据《建筑地基基础设计规范》(GB 50007—2002)5.2节计算

pcz=18×(2+2)=72kpa

faz=fakdγm (d-0.5)=70+1×18×(4-0.5)=133kPa

pz+pcz=59.7+72=131.7kPa<faz

承载力验算结果为满足。

阅读理解

根据短文内容,回答问题。

     For most Americans, a clean glass of water is just a faucet away. But for many of the world's poorest

people, it's hard to get.

     On Wednesday, the United Nations (UN) marked World Water Day by trying to cut the number of people

without good drinking water-one billion human beings worldwide-in half. In the next ten years, the UN will

work with governments around the world to reduce the shortage.

     Without clean water nearby, many people use water _____. In India, many people bathe and wash their

clothes in rivers that are polluted by human waste.

     According to the UN, not having enough clean water and sanitation causes more than three million deaths

a year.

     "The links between water and human health are powerful," said Dr Lee Jong Wook, director-general of

the World Health Organization (WHO). "We cannot live without clean water."

     In fact, the International Federation of the Red Cross said that quick reaction after last year's Asian tsunami

had stopped disease. The agency provided clean water to nearly 500, 000 people in Indonesia and Sri Lanka

after the tsunami.

     World Water Day was first celebrated in 1993. Since then, it is celebrated each year on March 22.

1. What is the best title of the passage? (Please answer within 5 words.)

    _______________________________________________________________________________________

2. Which sentence in the passage can be replaced by this one? The quality of the water is closely connected 

    with human health.

    _______________________________________________________________________________________

3. What did the International Federation of the Red Cross do after the tsunami? And why? (Please answer

    within 30 words.)

    _______________________________________________________________________________________

4. Please fill in the blank in the third paragraph with proper words or phrases to complete the sentence. (Please

    answer within lo words.)

    _______________________________________________________________________________________

5. Translate the underlined sentence in the first paragraph into Chinese.

    _______________________________________________________________________________________

填空题