Boiler Supporting Structure and Boiler Roof in India
Customer Project
The boiler supporting structure with a combustion chamber is used as the main stiffening element of the coal‑fired plant in Neyveli, Tamil Nadu, India.The boiler supporting structure measures 100 ft x 100 ft x 406.8 ft and, together with the boiler roof arranged above, it has to withstand loads of about 50,706 t.
| Structural Engineering |
Structural Analysis and Design Voss & Kamb und Partner GmbH, Kaiserslautern, Germany www.voka-kl.com |
| Contractor |
Alstom Boiler Deutschland GmbH, Stuttgart, Germany www.alstom.com |
Model
The engineering office of Voss & Kamb, a customer of Dlubal Software, was in charge of the structural analysis and the connections.
Boiler Supporting Structure and Boiler Roof
The load capacity of the 406.8-foot-high boiler supporting structure amounts to about 9,259 t. Due to the high loading, the structure is made completely of box sections. At the floor level, the support sections have dimensions of 7.9 x 7.9 ft and a wall thickness of 3.1 in.
All platforms are fastened to the boiler supporting structure. Half of the platforms (at a height of about 70 m - 122 m) hang in the final state as "hanging houses" on the brackets of the boiler support.
At the rear wall, the flue gas duct (d ~ 49 ft) is also suspended on 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 supporting structure (including buckling analysis) was performed with RSTAB.
The boiler roof, with a load capacity of about 992 t, was analyzed and designed with RFEM. The model consists of a combination of members and surfaces (24.6‑foot-high beams of the boiler roof). Eurocode 3 was used as the design standard.
Connections 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.
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- The design of the connection components is performed according to Eurocode EN 1993-1-8
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Programs Used for Structural Analysis
RSTAB 8
Main Program
Structural engineering software for designing frame, beam, and truss structures, as well as performing linear and nonlinear calculations of internal forces, deformations, and support reactions
Price of First License
2,550.00 USDRFEM 5
Main Program
Structural engineering software for finite element analysis (FEA) of planar and spatial structural systems consisting of plates, walls, shells, members (beams), solids, and contact elements
Price of First License
3,540.00 USDRFEM 5
Add-on Module
Design of steel members according to Eurocode 3
Price of First License
1,480.00 USD - How do I define effective lengths when designing steel members in RFEM 6?
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- How can I define a warping spring or a warping restraint?
