AD.2007-08.2.3 Eurocode Load Combination Generator

A new macro has been included with the program to generate load combinations for the Strength limit state per Eurocode – Basis of structural design, BS EN 1990:2002+A1:2005.

The load combination generator is capable of creating load combinations per equations 6.10, 6.10a, or 6.10b found in Cl. 6.4.3.2.

These equations specify the following combinations of loads:

\underset{j \geq 1}{Σ} γ_{G, j} G_{k, j} + γ_{p} P + γ_{Q, 1} Q_{k, 1} + \underset{i > 1}{Σ} γ_{Q, 1} ψ_{0, 1} Q_{k, 1}

(6.10)

Alternatively, for the strength limit state, the less favorable of equations 6.10a and 6.10b may be used:

\underset{j \geq 1}{Σ} γ_{G, j} G_{k, j} + γ_{p} P + γ_{Q, 1} ψ_{0, 1} Q_{k, 1} + \underset{i > 1}{Σ} γ_{Q, 1} ψ_{0, 1} Q_{k, 1}

(6.10a)

\underset{j \geq 1}{Σ} ξ_{j} γ_{G, j} G_{k, j} + γ_{p} P + γ_{Q, 1} Q_{k, 1} + \underset{i > 1}{Σ} γ_{Q, 1} ψ_{0, 1} Q_{k, 1}

(6.10b)

where

Gk	=	Permanent actions
P	=	Prestress actions
Qk	=	Variable actions

Note: The effects in each of the above equations are always additive. If any effect is negative (that is, would reduce the final sum), its effect is taken as zero.