BEARING CHARACTERISTIC RESEARCH OF COMPOSITE FOAM-CONCRETE WALLS REINFORCED WITH COLD-FORMED THIN-WALL SECTION STEEL

The pseudo-static tests and simulations of six walls with different spacings frames vertical limbs and foam concrete densities PX-1, PX-2, PX-3, PX-4, PX-5 and PX-6 were finished up. The bearing performances of walls under different spacings of vevtical limbs and the densities of foam concrete were studied, the test and simulation results showed that:at the beginning of loading, the wall had no obvious sign of cracking. At the later stage of loading, the number of cracks on the wall gradually increased, the crack width became larger. At that time, although the internal steel frames of the wall still had a large bearing capacity, the overall shear and compression performances of the wall decreased. Under the condition that the spacing and layout of the steel frame were the same, the densities of the foam concrete had a greater impact on the axial bearing capacity performance of walls, and as densities of foam concrete increased, the overall bearing capacity of the wall also increased. The combined wall had good bearing performances.