AUTOMATED TEST STAND FOR CONCRETE ELEMENTS ON JOINT bending moment, longitudinal and lateral forces in short-term dynamic loading

摘要

Automated test bench for testing concrete elements to the combined effect of bending moments and shear forces during a short-term dynamic loading force comprises floor on which are mounted vertical guide. On the guides for vertical reciprocating movement of a traverse is fastened to the cargo and the cargo locking assembly gruzosbrasyvatel. On reinforced concrete sample is placed with the loading traverse siloizmeritelej, and the sample is mounted on a support mounted on the power floor. One of the pillars - the hinge-movable, the other - fixed. On both ends of the test concrete element mounted crosshead bearings, one of which rests on the concrete specimen end. To the other end of the sample concrete adjacent the spring unit. Between the spring block and a second thrust jack mounted traverse and another one movable, traverse in which the jack rests. All crosspiece interconnected strands. To test the longitudinal tension test concrete element with both of its ends has a starter bars. From one end issues rigidly fixed on the outer plate of the spring assembly, and the other - to the thrust yoke. The stand allows for testing of reinforced concrete elements and oblique loading. For this purpose, one of the supports is provided with an additional element in the form of a plate with welded edge area. The stand includes the experiment control unit connected to the measuring system, which are connected to the strain gauges installed on a reinforced concrete element, the support reactions sensors, siloizmeritelej, accelerometers and displacement sensor mounted inside the spring unit. booth design has enhanced functionality and provides the accuracy and reliability of the test. 1 and 6 n.s ZP f ly-2 Fig.