Calcolatrice Forze nel Traliccio Gratuita

Stima le forze nei correnti di un traliccio.

kN
m
m

Bottom Chord Force (tension)

90.0 kN

Support Reaction60.0 kN

Bottom Chord Force (tension) vs Total Applied Load (W)

Vedi formula →

Formula

## Truss Chord Forces For a parallel-chord truss carrying uniform load, the midspan chord forces can be approximated from the equivalent beam moment. ### Derivation The midspan moment for equivalent simply supported beam: M = W L / 8. The chord force equals the moment divided by the lever arm (truss depth): **F_chord = W L / (8 h)** The bottom chord is in tension and the top chord is in compression with approximately equal magnitude at midspan.

Esempio Risolto

A 12 m span Pratt truss, 2 m deep, carrying a total load of 120 kN.

  1. 01Equivalent beam moment: M = 120 x 12 / 8 = 180 kN-m
  2. 02Chord force = 180 / 2 = 90 kN (tension in bottom chord)
  3. 03Support reaction = 120 / 2 = 60 kN