D-Shaped Concrete-Filled Steel Tube Structure in Bridge Engineering

Table 4

Test phenomena at various stages.

Attributes	Load
	Early loading	Load to 120 T	Load to 136T–144 T	Load to 160 T
Deformation	Has not changed much	Increase evenly	Obviously deformed	Axial displacement increases sharply
Phenomenon	No	Drum melody, small sound	Waist drum destruction	Component completely destroyed