Designed with Dlubal Software ...
Extremely Highly Loaded
Boiler Supporting Structure
and Boiler Roof in India
The boiler supporting structure
contains the combustion chamber
and is used as the main stiffening
element of the coal-fired plant in
Neyveli, Tamil Nadu, India.
The boiler supporting structure
measures l x w x h = 30.5 m x 30.5 m
x 124.0 m and has to, together with
the boiler roof arranged above,
withstand loads of about 46,000 t.
The Dlubal customer Voss & Kamb
was in charge of the structural
analysis and the connections.
Boiler Supporting Structure
and Boiler Roof
The load capacity of the 124-meter
high boiler supporting structure
amounts to about 8,400 t. Due to
the high loading, the structure is
completely made of box sections. At
the floor level, the support sections
have dimensions of 2.4 m x 2.4 m
and a wall thickness of 80 mm.
All platforms are fastened at the
boiler supporting structure. In the
final state, half of the platforms (at a
height of about 70 m - 122 m) hang
on the brackets of the boiler supporting structure as "hanging houses". At the rear wall, the flue gas duct
(d ~ 15 m) is also suspended at the
brackets of the boiler supporting
structure.
Due to its location, the structure has
to withstand very high wind loads.
The analysis and design of the boiler
3D model of a boiler supporting structure and deformation in RSTAB (screenshot: Dlubal)
supporting structure (incl. buckling
analysis) was performed with RSTAB.
The boiler roof with a load capacity
of about 900 t was analyzed and
designed with RFEM. The model
consists of a combination of members and surfaces (7.50-meter high
beams of the boiler roof). Eurocode
3 was used as the design standard.
Connection modeling in Tekla
Structures
The model created in Tekla was
imported to RSTAB using the direct
interface. The structure was further
modified during the analysis.
The detailing of the connections was
again performed in Tekla Structures
according to the structural analysis.
Tekla model of the boiler supporting structure (grey) and the boiler
The following companies participated in the construction:
Customer
Alstom Boiler Deutschland GmbH
www.alstom.com
Structural planning
Voss & Kamb und Partner GmbH
Kaiserslautern, Germany
www.voka-kl.de/en
Software
Dlubal Software GmbH
Tiefenbach, Germany
www.dlubal.com
Connection modeling in Tekla Structures (images: Alstom)
roof (pink)
Dlubal Software GmbH
Software for Structural and Dynamic Analysis