题目内容

某钢筋混凝土次梁，下部纵向钢筋配置为4Φ20，fy＝360N/mm2，混凝土强度等级为C30，ft＝1.43N/mm2，在施工现场检查时，发现某处采用绑扎搭接接头，其接头方式如下图所示。试问，钢筋最小搭接长度l1(mm)，应与下列()项数值最为接近。

A. 846
B. 992
C. 1100
D. 1283

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外周边框架底层某中柱，截面b×h=700mm×700mm，混凝土强度等级为C50 (fc＝23.1N/mm2)，内置Q345型钢(fa＝295N/mm2)，考虑地震作用组合的柱轴向压力设计值N＝18000kN，剪跨比λ＝2.5。试问，采用的型钢截面面积的最小值(mm2)应最接近于下列()项数值。

A. 14700
B. 19600
C. 45000
D. 53000

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What does the last sentence in the 3rd paragraph mean according to the passage？

A. The patient is seriously iii because of lack of water in the well.
B. The patient can be saved if he has enough money to solve the financial problem.
C. It's too late for small business owners to realize the gravity of the problem because they have used up their money.
D. It's urgent for small business owners to pour all their money into the enterprise to revitalize their business.

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A．Preparing for the race of Marathons.B．Preparing for the cycling race the next day.C．T

A. Preparing for the race of Marathons.
B. Preparing for the cycling race the next day.
C. Training for a hiking race.
Doing an experiment.

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设构件承受剪力设计值V＝80kN，箍筋间距s=100mm，受扭纵筋与箍筋的配筋强度比值为ξ=1.2，腹板的塑性抵抗矩Wtw和所受扭矩w的比值为0.98，已知构件须按剪扭构件计算，则腹板的抗剪箍筋的计算面积Asv最接近()项数值。

A. 50mm2
B. 29mm2
C. 25mm2
D. 18mm2

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A. 846 B. 992 C. 1100 D. 1283

What does the last sentence in the 3rd paragraph mean according to the passage？

A．Preparing for the race of Marathons.B．Preparing for the cycling race the next day.C．T

设构件承受剪力设计值V＝80kN，箍筋间距s=100mm，受扭纵筋与箍筋的配筋强度比值为ξ=1.2，腹板的塑性抵抗矩Wtw和所受扭矩w的比值为0.98，已知构件须按剪扭构件计算，则腹板的抗剪箍筋的计算面积Asv最接近()项数值。

A. 846
B. 992
C. 1100
D. 1283