Coupling Beams of Reinforced concrete Shear Walls

钢骨混凝土墙剪力墙
为了改善平行配置纵向受力钢筋和横向箍筋的高强混凝土连梁的抗剪性能,进行9根小跨高比钢纤维高强混凝土连梁(l/h≤2.5)和4根高强混凝土连梁的对比试验.考察了跨高比l/h、钢纤维体积掺率ρf、配箍率ρsv和加载方式对高强混凝土连梁的破坏形态和受剪承载力的影响.结果表明,以适量的钢纤维替代高强混凝土连梁中的部分箍筋,不仅可以提高连梁的受剪承载力,有效地防止混凝土保护层、斜裂缝面上和剪压区混凝土的酥裂和剥落,还能实现小跨高比高强混凝土连梁的破坏形态从脆性的剪切破坏到延性的弯曲破坏的转化.参照《纤维混凝土结构技术规程》CECS
38:2004中钢纤维混凝土箍筋梁受剪承载力的计算模式,给出低周反复荷载作用下(l/h≤2.5)和静载作用下的钢纤维混凝土连梁受剪承载力计算公式.
The
process
of
industrialization
within
the
building
sector
has
yielded
the
ever-increasing
use
of
prefabricated
buildings,
that
is
to
say
buildings
whose
component-parts
(and
not
only
structural
ones)
are
factory-made.
One
of
the
most
advanced
types
is
that
of
the
multi-storey
unit
in
superimposed
blocks
of
reinforced
concrete
(Fig
1a)
This
type
has
a
number
of
advantages,
such
as
speed
and
simplicity
of
assembly,
which
thereby
enable
extremely
quick
installation
times
even
in
disaster
areas.
Of
course,...
The
process
of
industrialization
within
the
building
sector
has
yielded
the
ever-increasing
use
of
prefabricated
buildings,
that
is
to
say
buildings
whose
component-parts
(and
not
only
structural
ones)
are
factory-made.
One
of
the
most
advanced
types
is
that
of
the
multi-storey
unit
in
superimposed
blocks
of
reinforced
concrete
(Fig
1a)
This
type
has
a
number
of
advantages,
such
as
speed
and
simplicity
of
assembly,
which
thereby
enable
extremely
quick
installation
times
even
in
disaster
areas.
Of
course,
in

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