2.1 Terminology
2.1.1 Grid mesh
The main elements of the eco-grid system are constructed,
which are anti-corrosion, wear-resistant, high-strength low-carbon hot-dip
galvanized steel wire, aluminum-zinc alloy steel wire, coated with PVC or
high-corrosion-resistant above homogenous steel wire, using mechanical hinges. A
mesh structure of a multi-hinged, hexagonal mesh that is woven.
2.1.2
Ecological grid structure eco-mesh structure
A flexible structure formed by
filling a box formed by a grid with a desired bulk material.
2.1.3 Gubin
cage gabion
An eco-grid structure with a height greater than or equal to 0.45
m.
2.1.4 Reinforced solid cages reinforced gabion
An ecological grid
structure consisting of a solid cage and a stiffened piece.
2.1.5 Green
Coastal Pads
An eco-grid structure with a height less than 0.45
m.
2.1.6 Ecological grid net bag sack gabion
A cylindrical structure
that is bundled by a grid.
2.1.7 mesh wire mesh wire
Weaving grid
wire.
2.1.8 edge wire selvedge wire
A wire having a diameter larger
than the diameter of the mesh, woven or wound around the edge of the
grid.
2.1.9 tie lacing wire
Used for tying between the various meshes
of the eco-grid structure, tying with adjacent structures, and reinforcing wires
inside the structure.
2.1.10 mesh mesh size
The hexagonal hole formed
by the mechanical hinge of the steel wire is represented by D×X, D is the axial
distance of the hinge center line, X is the distance between the diagonals of
the mesh, and the length of the double wire hinge is usually not less than 45
mm.
2.2 Symbol
a —— vertical design seismic
acceleration representative value;
Ah —— the horizontal representative design
seismic acceleration representative value;
b —— water surface width;
C0 ——
base cohesion (kPa);
C —— filling clay cohesion;
Co —— flow velocity
distribution coefficient;
Cs —— the stability factor of rock filling;
d ——
section depth;
D —— the axial distance of the hinge center line;
Dm —— the
median particle size of the rockfill in the ecological grid structure;
E0 ——
eccentric moment;
f —— basic friction coefficient;
Fa —— active earth
pressure behind the wall;
Fe —— the representative value of seismic active
earth pressure;
G —— wall weight;
g —— gravity acceleration;
K0 ——
anti-overturning safety factor;
Ks —— anti-slip safety factor;
H —— height
of retaining wall;
Hs —— design wave height;
K1 —— slope correction
factor;
n —— rockfill porosity;
q —— the uniform load on the fill
surface;
R —— hydraulic radius;
So —— safety factor;
V —— average flow
velocity of the section.
α —— the angle between the back of the wall and the
horizontal plane;
β —— the angle between the fill surface and the horizontal
plane;
γ —— the natural gravity of the soil;
Γw——the severity of
water;
Γs —— the severity of the stone filling;
φ —— internal friction
angle;
δ —— the angle of friction between the back of the wall and the
fill;
ζ —— Calculate the coefficient and calculate the seismic action effect
by pseudo-static method. The solid-side cage structure can take 0.25.
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