Parametric Analysis on Collapse-resistance Performance of Reinforced-concrete Frame with Specially Shaped Columns Under Loss of a Corner Column

Abstract

A finite element model is verified accurate enough to simulate the static test of one reinforced-concrete frame with specially shaped columns subjected to the loss of a ground corner column. As the frame sustained loads primarily depending on the beam resisting mechanism in the test, four related parameters, namely the height of beam section, rebar ratio of beam, rebar ratio of slab and limb length of specially shaped column are chosen for parametric analyses respectively. It is indicated that the collapseresistance capacity remarkably increases with the increasing of the height of beam section and rebar ratio of the lower steel bars of beam. The increase of the rebar ratio of slab and upper steel bars of beam could enhance the stiffness and collapse-resistance capacity slightly. The lengthening of the limb of specially shaped column only increases the stiffness of the frame. According to an equivalent method, the rectangular column frame is obtained to compare collapse-resistance performance with the specially shaped column frame. It is concluded that the frame with specially shaped columns could maintain the equivalent collapse-resistance capacity while reduce the lateral stiffness compared with the rectangular column frame.

Dynamic performance of a real-scale reinforced concrete building test under a corner-column failure scenario

“…Existing tests on corner column removal focused on subassemblies of frames or flat slab structures under monotonic loads applied by an actuator [29,32,33,[35][36][37][38][39][40][41]. Only tests by Xiao et al [42,43] and Zhao et al [44,45] considered complete, but not full scale, structures and only the experimental study by Xiao et al [42,43] was performed under a real sudden loss of a corner column.…”

Combined Sensor Method for Measuring Torsional Vibration and Anti-Collapse Performance of Steel Frame under Strong Earthquake

“…and sensors (Hall sensors, electromagnetic sensors, capacitive sensors, etc.) that can rotate with the measuring axis and whose angle is correctly encoded [12]. Measure the torsional vibration using reflective fiber sensors, etc.…”

Comparison of Different Procedures for Progressive Collapse Analysis of RC Flat Slab Structures under Corner Column Loss Scenario

“…Adam et al [17] carried out a test of a two-story RC building subjected to a corner column scenario and analyzed the dynamic performance of the structure and alternative load paths. Among other original studies, static [18][19][20][21][22][23][24] and dynamic [25][26][27] tests are also noteworthy.…”