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问题 单项选择题

题13～17：

有一等边三桩承台基础，采用沉管灌注桩，桩径为426mm，有效桩长为24m。有关地基各土层分布情况、桩端阻力特征值qpa桩侧阻力特征值qsia及桩的布置、承台尺寸等如题图所示。

已知b0=2427mm，h0=890mm，剪跨比λx=ax/h0=0.087；承台采用混凝土强度等级C25。试问，承台对底部角桩（桩2）形成的斜截面受剪承载力（。kN）最接近于下列（）项数值。

A．2990

B．3460

C．3600

D．4140

答案

参考答案：C

解析：

根据《地基规范》第8.5.18条进行计算：

已知剪跨比

剪切系数

βhs=(800/h0)1/4=(800/890)1/4=0.974

因此，承台对底部角桩(桩2)形成的斜截面受剪承载力为

βhsβf1b0h0=0.974×1.346×1.27×2427×890=3596396N=3596kN

听力题

请根据句子逻辑, 从模块四课本所学的词汇中选用恰当的单词并且使用其正确的形式填空。 

小题1:He will r_______________ our class to take part in the meeting．

小题2:I won’t trust you until you give me the c__________ evidence to support what you say．

小题3:We are lucky that all our classrooms are very well e______________．We have computers, fans, air-conditioners etc．

小题4:This dictionary is for the a_______________ English learners while that one is for the beginners．

小题5:Jim is so c____________________ that he always gets everything ready for the teacher before each lesson．

小题6:We are sure to o____________ all difficulties on our way to success if we are mentally strong．

小题7:Only a m__________ of students are against this plan while most of them support it．

小题8:Jack and Ben had a quarrel yesterday．But now they have found that the quarrel happened because of a m________________ and they have forgiven(原谅) each other．

小题9:Your c_________ on him that he is not an honest person really hurts him．

小题10:What the hero has done will i______________ more people to follow him and offer help to others when necessary．
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选择题

— What would you like?

— I’m thirsty. I’d like_________.

A. two cups of tea  B. two cup of tea   C. two eggs.  
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