TESTING OF PLATFORM JOINTS OF BEARING STRUCTURES IN LARGE-PANEL APARTMENT HOUSE

Abstract

The data on the results of tests of two series of platform joints in external and internal walls for
a 14-storey panel house are given. The objective is determination of a breaking load. Constructions
were simulated by concrete elements of actual thickness, 300 mm long and 400 mm wide. The
nodes rigidity was ensured by special metal bonds. The strength of concrete and mortar was
determined by a complex method: sample tests and nondestructive tests. The minimum breaking
load for the joint of exterior walls was 64 ton. The strength margin taking into account the safety
factoris 1.33. The minimum breaking load for the joint of interior walls was 103 ton. The strength
margin is 1.17. When testing three products in each series the minimum breaking load was at least
90% of the reference load, specified on the basis of the safety factor 1.6.
Keywords: structure test, platform joint, concrete strength, breaking load.