Table 1

Key influencing factor of pier under flood"

Table 2

Value range of fluid domain"

Fig.1

Curve of resistance coefficient affected by basin length"

Fig.2

Geometric parameters of pier structure"

Fig.3

Horizontal resistance nephogram of different pier structures"

Fig.4

Curve of resistance coefficient of different piers with flow velocity"

Fig.5

Variation curve of pier horizontal resistance coefficient with length-width ratio L/B"

Fig.6

Resistance trace of square section pier with different incidence angles"

Fig.7

Curve of resistance coefficient of square section pier with incident deflection angle"

Fig.8

Resistance trace of rectangular pier with different incidence angles（L/B=3）"

Fig.9

Change curve of Cd with L/B under different incidence angles"

Fig.10

Curve of horizontal resistance coefficient of pointed pier with included angle"

Fig.11

Horizontal resistance nephogram of three piers with different angles"

Fig.12

Curve of horizontal resistance coefficient of three piers changing with different angles of longitudinal axis （longitudinal distance with 3 m）"

Fig.13

Curve of horizontal resistance coefficient of two piers with L/D"

Fig.14

Curve of horizontal mutual interference between two piers with L/D"

Fig.15

Horizontal resistance nephogram of three piers"

Fig.16

Curve of horizontal resistance coefficient of three piers with L/D"

Fig 17

Horizontal resistance nephogram of three longitudinal piers"

Fig.18

Curve of horizontal resistance coefficient of three longitudinal piers changing with L/D"