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Table 2 Comparison of the structural dynamic characteristics of bridges of the same type or with similar spans (unit: Hz)

From: Parametric analysis of the dynamic characteristics of a long-span three-tower self-anchored suspension bridge with a composite girder

Mode description TSSB_1 TSSB_2 TSSB_3 DTSB DTCSB
LG 0.1000 (1) 0.201 (1) 0.4880 (2) 0.1329 (3)
BD-1-ASY-V 0.1620 (2) 0.322 (2) 0.4084 (1) 0.2760 (8) 0.3005
BD-2-ASY-V 0.2780 (3) 0.561 (5) 0.5603 (3)
BD-1-SY-V 0.2820 (4) 0.465 (3) 0.5605 (4) 0.1830 (4) 0.2332
BD-2-SY-V 0.3918 (5) 0.554 (4) 0.6089 (5)
BD-1-SY-T 0.4430 (6) 0.727 (7) 0.6228 (6) 0.3160 (10) 0.6103
BD-1-ASY-T 0.4472 (7) 0.570 (6) 0.6269 (7) 0.5268 (26) 0.8207
  1. Bridge description:
  2. TSSB_1: Three-tower six-span self-anchored suspension bridge in the present study
  3. TSSB_2: Three-tower four-span self-anchored suspension bridge with two main spans of 218 m (composite girder section with two side boxes and openings) (Kang et al. 2017)
  4. TSSB_3: Three-tower six-span self-anchored suspension bridge with two main spans of 168 m (composite girder section with two side boxes and openings) (Xiao et al. 2016)
  5. DTSB: Double-tower three-span ground-anchored suspension bridge with a main span of 800 m (π-shaped composite girder section with openings) (Li 2019)
  6. DTCSB: Double-tower three-span cable-stayed bridge with a main span of 818 m (closed steel box girder) (Zhang et al. 2012)
  7. The numbers in parentheses in the table indicate the orders of the mode