Versuche zur Zug-Abscher-Interaktionstragwirkung von Schrauben

Experimental study on the combined tension and shear load bearing behavior of bolts.

Since the middle of last century bolts are an established part of connections in steel structures. Therefore for many design engineers the change in the design rule for bolts under combined tension and shear load in the newly introduced Eurocode 3 (EN 1993-1-8) towards the well-known DIN 18800 design rule came rather as a surprise. The hitherto quadratic interaction function is replaced by a by far more conservative, bi-linear function. Searching for the answer to the question, which function really describes the behavior of bolts under combined load, a number of tests were conducted at the Department of Steel Structures at the TU Darmstadt.