问题：
[问答题]轴心受力构件的截面形式有哪几种？并且对轴心受力构件截面形式的共同要求是什么？
参考答案：
轴心受力构件的截面形式有热轧型钢、冷弯薄壁型钢、实腹式组合截面以及格构式组合截面。
对轴心受力构件截面形式的共同要求是：
（1）能提供强度所需要的截面积；
（2）制作比较简便；
（3）便于和相邻的构件连接；
（4）截面开展而壁厚较薄，以满足刚度要求。
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