렉스틸 - Corrugated Steel Plate

Corrugated Steel Plate

What is Corrugated Steel Plate?

Corrugated steel plate is a structural material that increases flexural rigidity, internal force, and durability by forming corrugations on a steel plate with certain specifications and has the characteristics of buried structure that supports the load through interaction with the surround ground.

Product Figure

Specification – Deep Corrugation

Thickness(t)	Width(p)	Depth(d)
3.4~9.0mm	381mm	140mm

Manufacturing and assembly process

Law material steel coil
Corrugation of steel plate
Bending based on design
Assembly
Completion of corrugated steel plate structure
Construction complete

Deep Corrugated steel plate

As shown in Section A-A, the pitch and depth of the corrugated steel plate is three times larger than that of the standard corrugated steel plate, which improves the structural load resistance against the stress concentration caused by the high backfill and unbalanced earth pressure.
Unlike conventional products bent with press brake machines, the accuracy of product specifications can be improved with the roll forming process, and L, the circumferential length of the existing steel plate can be extended from 4.7m to 7.2m.

Specification of corrugated steel plate

S (406.4mm)	NET WIDTH (mm)	WIDTH (mm)
3	1219.2	1447.2
4	1625.6	1853.6
5	2032.0	2260.0
	~
15	6096.0	6324.0
16	6502.4	6730.4
17	6908.8	7136.8

Cross-sectional shape

Pure arch
High profile arch
Low profile arch
Box-type
Round-type
Horizontal ellipse
Pipe arch
Underpass

End treatment

Mechanical properties

When vertical earth pressure is generated on the upper part of the corrugated steel plate structure, lateral earth pressure resists. At this time, the vertical and lateral earth pressure becomes constant, referred to as load distribution. This load distribution (ring compression effect) suppresses the bending development and has a structural characteristic in which the compressive force acts.

Requirements of raw materials for corrugated steel plate (KS D 3503, KS D 3506)

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Material number	Chemical composition					Mechanical properties
	C(%)	Si(%)	Mn(%)	P(%)	S(%)	Zinc Amount (g/㎡)	Yield strength (MPa)	Tensile strength (Mpa)	Elongation
	C(%)	Si(%)	Mn(%)	P(%)	S(%)	Zinc Amount (g/㎡)	Yield strength (MPa)	Tensile strength (Mpa)	t≤0.05	t≤0.05
SS275(SS400)	≤ 0.25	≤ 0.45	≤ 1.40	≤ 0.050	≤ 0.050	900 ≤	275 ≤	410~550	21≤	18≤
SS315(SS490)	≤ 0.28	≤ 0.50	≤ 1.50	≤ 0.050	≤ 0.050	900 ≤	315 ≤	490~630	19 ≤	16 ≤
SS410(SS540)	≤ 0.30	≤ 0.55	≤ 1.60	≤ 0.040	≤ 0.040	900 ≤	410 ≤	540 ≤	16 ≤	14 ≤
SS450(SS590)	≤ 0.30	≤ 0.55	≤ 1.80	≤ 0.040	≤ 0.040	900 ≤	450 ≤	590 ≤	14 ≤	12 ≤

Applied section

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Reinforced concrete structure	Corrugated steel plate structure
Passageway
Waterway
Open-cut Tunnel
Bridge