问题 问答题 简答题

框架结构有哪些优缺点?

答案

参考答案:

梁、柱组成的框架作为建筑竖向承重结构,并同时抵抗水平荷载时,被称为框架结构体系。

优点:建筑平面布置灵活,可做成需要大空间的会议室、餐厅、办公室等。

缺点:抗侧刚度小,水平位移较大,故限制了建造高度。

一般不宜超过50m。

各种结构型式适用高度还与设防烈度有关。

抗侧刚度主要取决于梁、柱的截面尺寸及层高。

阅读理解

阅读下面的材料,从每题所给的A、B、C三个选项中选出最佳答案。

    Jackson was driving back home along a road one evening. He just lost his job. It was winter and it was very

cold, just like his feelings.

    An old lady with her car was standing on one side of the road. She needed help. No one stopped to help her.

Jackson stopped in front of her and got out of his car. The lady looked very worried. Even when he put a smile

on his face, the old lady still looked worried. Was he going to hurt her? He didn't look safe, and he looked poor

and hungry. Jackson knew how she felt. He said." I'm here to help you, madam. Why don't you wait in my car?

By the way, my name is Jackson."

     The lady thought for a while and then went into his car. There was something wrong with her car. Jackson

went under her car to repair it. When he finished, he got dirty and his hands hurt. Then the lady told him that

her name was Anie. She asked Jackson how much she should pay for his help.

    Jackson never thought about getting money. This was not a job to him. This was helping someone in need.

He told her that if she really wanted to pay him back, the next time she saw someone who needed help, she

should give that person help.

1. Jackson felt ____when he drove home that evening.

A. strange

B. happy

C. sad

2. Why did the lady look worried?

A. Because she lost her way.

B. Because her car broke down.

C. Because she felt very cold.

3. It was____ for Jackson to repair the lady's car.

A. difficult

B. interesting

C. impossible

4. Jackson helped the lady because _____.

A. the lady would pay him

B. the lady felt cold

C. he wanted to help someone in need

5. The old lady should____ the next time she met someone who needed help.

A. help that person

B. leave that person alone

C.call Jackson for help again

单项选择题