FAQ 001482 PT

Modelação | Estrutura RFEM RSTAB

I don't quite understand the spring constants for beams and piles on elastic foundations. Are these parameters of translational, shear, and rotational springs stiffness moduli (MN/m²) or spring constants (MN/m³)?

Resposta

Translational springs are determined from coefficients relative to surfaces. These are given in kN/m³ and describe the amount of required kN/m² to compress the ground by 1.0 m.

To define the springs for a member limited in its width, the coefficients are multiplied by the width. For a horizontal member with a z-axis pointing downwards, this is the y-dimension. Thus, a translational spring relative to a member is obtained in kN/m². It shows the kN/m required to compress the ground by 1.0 m.

The translational springs always relate to local member axes. Do not use the stiffness modulus for the determination, but the spring constants, which are given in kN/m³.

The shear springs represent a constant rotational spring over the member length and are given in in kNm/rad and per m. If you substitute rad by m/m, you obtain kNm/(m/m x m), which can be simplified to kN.

Contacto

Contacto da Dlubal

Encontrou a sua pergunta? Se não for o caso, entre em contacto connosco ou envie-nos a sua questão através do formulário online.

+49 9673 9203 0

(falamos português)

info@dlubal.com

RFEM Programa principal
RFEM 5.xx

Programa principal

Software de engenharia estrutural para análises de elementos finitos (AEF) de estruturas planas e espaciais constituídas por lajes, paredes, vigas, sólidos e elementos de contacto

RSTAB Programa principal
RSTAB 8.xx

Programa principal

Software de engenharia para o dimensionamento de estruturas reticuladas de pórticos, barras e treliças, com cálculos lineares e não-lineares de esforços internos, deformações e reações de apoio