双排型钢桩支护结构的变形性状分析

Deformation behavior Analysis of double-row steel piles

结合具体工程实例,利用有限元分析手段对双排型钢桩支护结构的变形进行较为深入的分析。分析结果表明:双排型钢桩的变形性状与普通双排桩的变形性状基本一致。当前、后排桩间软土未进行加固处理时,连梁与型钢桩之间的转动约束将显著影响双排型钢桩的变形;而当对桩间软土进行加固处理后,连梁与型钢桩之间的转动约束对双排型钢桩的变形影响很小,可不予以考虑,但应考虑转动约束不同对型钢桩内力的影响。

Combined with specific projects, the deformation behavior of double - row steel piles is analyzed by using of the finite element method. The results show that ： the deformation behavior of double - row steel piles and ordinary double - row piles is basically the same. When the soft soil between the front piles and the rear piles is not reinforced, the rotational restraint between the coupling beams and steel piles will significantly affect the deformation behavior of double - row steel piles. However, when the soft soil between the front piles and the rear piles is improved, the rotational restraint between the coupling beams and steel piles is very small impact on the deformation behav- ior of double - row steel piles, which can be ignored. But the internal force behavior effected by the rotational restraint should be consid- ered.