某五桩基矩形等厚承台尺寸如图所示，由于承台顶部在x、y方向均设_爱下问搜题

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问题单项选择题

某五桩基矩形等厚承台尺寸如图所示，由于承台顶部在x、y方向均设有连续的连系梁承担柱底传来的弯矩，承台顶面仅承受柱传来的相应于荷载的基本组合时的竖向力F=3035.2kN。基本组合由永久荷载控制。已知桩截面尺寸为400mm×400mm，承台高度为600mm，h_0x=540mm，h_0y=520mm，柱截面尺寸为600mm×600mm，承台用C30混凝土，钢筋用HRB400级。

提示：按《建筑桩基技术规范》(JGJ 94—2008)计算。

垂直y方向的承台抗剪承载力（kN），与下列何项数值最为接近（）。

A．1822

B．1876

C．1970

D．1955

答案

参考答案：B

解析：

解答如下：

b₀=2.8m

由《建筑桩基技术规范》式(5.9.10-1)：

β_hsαf_tb₀h₀=1.0×0.901×1430×2.8×0.52=1876kN

完形填空

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Dad’s also always been very   25 . At 15, I started a magazine. It was   26  a great deal of my time, and the headmaster of my school gave me a   27 ：stay in school or leave to work on my magazine.
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A．unnecessary

C．unimportant

A．understanding

B．experienced

单项选择题

当旅客列车和摘挂列车开行对数很少，运量增长速度很慢，采取增设会让站和其他措施不利或不能满足需要或受到某种限制时，宜采用的提高通过能力的措施是（）

A.修建分流线

B.修建线路所

C.修建双线插入段

D.部分区间修建双线