Create Rebar Data#

class opstool.preprocessing.Rebars[source]#

A class to create the rebar point.

add_rebar_circle(xo, radius, dia, gap=0.1, n=None, angle1=0.0, angle2=360, matTag=None, color='black', group_name=None)[source]#

Add the rebars along a circle.

Parameters#

xo: list[float, float]: Center coords of circle, [(xc, yc)].
radius: float: Radius of circle.
dia: float: rebar dia.
gap: float, default=0.1: Rebar space.
n: int, default=None: The number of rebars, if not None, update the Arg gap according to n. This means that if you know the number of rebars, you don’t need to input gap or set gap to any number.
angle1: float: The start angle, degree.
angle2: float: The end angle, deree.
matTag: int: OpenSees material matTag for rebar previously defined.
color: str or rgb tuple.: Color to plot rebar.
group_name: str: Assign rebar group name.

Returns#

None

add_rebar_line(points, dia, gap=0.1, n=None, closure=False, matTag=None, color='black', group_name=None)[source]#

Add rebar along a line, can be a line or polygon.

Parameters#

points: list[list[float, float]]: A list of rebar coords, [(x1, y1), (x2, y2),…,(xn, yn)], in which each element represents a corner point, and every two corner points are divided by the arg gap.
dia: float: Rebar dia.
gap: float, default=0.1: Rebar space.
n: int, default=None: The number of rebars, if not None, update the Arg gap according to n. This means that if you know the number of rebars, you don’t need to input gap or set gap to any number.
closure: bool, default=False: If True, the rebar line is a closed loop.
matTag: int: OpenSees mat Tag for rebar previously defined.
color: str or rgb tuple.: Color to plot rebar.
group_name: str: Assign rebar group name

Returns#

None

get_rebars_num()[source]#

Returns the number of rebars in each layer.

Returns#

list[int]: The number of rebars in each layer.

Example#

import opstool as opst

outlines = [[0, 0], [2, 0], [2, 2], [0, 2]]
coverlines = opst.offset(outlines, d=0.05)
cover = opst.add_polygon(outlines, holes=[coverlines])
holelines = [[0.5, 0.5], [1.5, 0.5], [1.5, 1.5], [0.5, 1.5]]
core = opst.add_polygon(coverlines, holes=[holelines])
sec = opst.SecMesh()
sec.assign_group(dict(cover=cover, core=core))
sec.assign_mesh_size(dict(cover=0.02, core=0.05))
sec.assign_group_color(dict(cover="gray", core="green"))
sec.mesh()

Add Rebars:

# add rebars
rebars = opst.Rebars()
rebar_lines1 = opst.offset(outlines, d=0.05 + 0.032 / 2)
rebars.add_rebar_line(
    points=rebar_lines1, dia=0.032, gap=0.1, color="red",
)
rebar_lines2 = opst.offset(holelines, d=-(0.05 + 0.02 / 2))
rebars.add_rebar_line(
    points=rebar_lines2, dia=0.020, gap=0.1, color="black",
)
rebar_lines3 = [[0.3, 0.3], [1.7, 0.3], [1.7, 1.7], [0.3, 1.7]]
rebars.add_rebar_line(
    points=rebar_lines3, dia=0.026, gap=0.15, closure=True,
    color="blue",
)
# add to the sec
sec.add_rebars(rebars)

Visualization:

sec.get_sec_props(display_results=False, plot_centroids=False)
sec.centring()
sec.view(fill=True, engine='mpl')