Patent ID: 8434935

Claim:
A heating furnace for testing middle and long span structures, which comprises: a main body ( 110 ) having an inner wall ( 112 ) and an outer wall, wherein the inner wall is formed of a refractory material and the outer wall ( 114 ) is formed of a steel material, a detachable cover ( 120 ) installed on an open upper part thereof, and a heating space ( 130 ) formed therein; a heating unit ( 140 ) including a plurality of burners ( 142 ) for providing heat from two first sidewalls (w 1 ) in a longitudinal direction of the main body ( 110 ) to heat the heating space ( 130 ); an exhaust unit ( 160 ) having a plurality of exhaust ports ( 162 ) for discharging an exhaust gas in the heating space ( 130 ) from two second sidewalls (w 2 ) in a longitudinal direction of the main body ( 110 ), and exhaust pipes ( 166 ) connected to the exhaust ports ( 162 ) to discharge the exhaust gas to a chimney, respectively; a partition unit ( 200 ) for partitioning the heating space ( 130 ) of the main body ( 110 ) and formed of a refractory material to block transfer of heat generated from one space to the other space; a horizontal force applying unit ( 220 ) including a horizontal actuator ( 222 ) for applying a compression force to one side of a test sample installed in a longitudinal direction of the main body ( 110 ), and a reaction frame ( 232 ) for supporting the other side of the test sample at an opposite side of the horizontal actuator ( 222 ); and a vertical force applying unit ( 250 ) including a vertical actuator ( 270 ) for applying a compression force to the test sample from an upper part of the test sample installed in the main body ( 110 ), and a support frame ( 280 ) for supporting the test sample in the main body ( 110 ), wherein the heating space ( 130 ) of the main body ( 110 ) is partitioned using the partition unit ( 200 ) to correspond to a size of the test sample, and heat and a compression force are applied to the test sample in the heating space ( 130 ) to perform a fireproof performance test, and a test sample mounting space ( 202 ) is formed at the two second sidewalls (w 2 ) in a widthwise direction of the main body ( 110 ) and an upper center of the partition unit ( 200 ), and a blocking wall ( 210 ) formed of a refractory material is disposed in the test sample mounting space ( 202 ) to open the test sample mounting space ( 202 ) according to the size of the test sample, performing the fireproof performance test.