Analytical model on progressive collapse resistance of prestressed precast concrete frame under middle column removal scenario

This paper investigates an analytical model on progressive collapse resistance of prestressed precast concrete (PC) frame structures. The analytical model is established based on a sub-frame with two stories and two spans under middle column removal scenario, in which the vertical resistance of two-span beam in each story is obtained according to force equilibrium and deformation compatibility of the beam. The tension-stiffening effect and bond slip of top bars near side joint interface are considered in the model to predict the collapse resistance of the beam at compressive arch action (CAA) stage and tensile catenary action (TCA) stage accurately. Besides, to consider the distinct mechanical behavior of beams in failed span in different stories in the process of progressive collapse, the model is related to the restrained stiffness of beam ends, which is determined according to deformation compatibility and force equilibrium of side column in frame. The accuracy of the analytical model is verified according to the results of tests and numerical simulation. Parametric studies are conducted based on the proposed analytical model to investigate the effects of structural parameters and boundary conditions on vertical resistance of the two-span beam in the failed span. The results show that increasing the length of dissipated segment of top bars can improve the structural ductility in progressive collapse, and increase the TCA capacity. Increasing the initial tension of steel strands can enhance the CAA capacity, but the effect of enhancement is alleviated with the increase of initial tension. The larger restrained stiffness can increase the CAA capacity of beam, and the translation stiffness has a more prompt effect on the vertical resistance of beam than the rotation stiffness.

[1]  Yanchao Shi,et al.  Experimental investigation on progressive collapse performance of prestressed precast concrete frames with dry joints , 2021 .

[2]  Licheng Wang,et al.  Analytical models for reverse arch and compressive arch action in horizontally restrained unbonded prestressed RC beam-column sub-assemblages , 2020 .

[3]  Jun Yu,et al.  Numerical study of dynamic responses of reinforced concrete infilled frames subjected to progressive collapse , 2020 .

[4]  A. Pachenari,et al.  An analytical model on compressive arch action capacity of 3D beam-column sub-assemblages under failure of one or two adjacent interior columns , 2020 .

[5]  Lei Xu,et al.  Simplified model for assessing progressive collapse resistance of reinforced concrete frames under an interior column loss , 2020 .

[6]  Q. Fang,et al.  Numerical investigation on load redistribution capacity of flat slab substructures to resist progressive collapse , 2020, Journal of Building Engineering.

[7]  Q. Fang,et al.  Structure behavior of reinforced concrete beam-slab assemblies subjected to perimeter middle column removal scenario , 2020 .

[8]  Q. Fang,et al.  Quasi-static and dynamic behavior of precast concrete frames with high performance dry connections subjected to loss of a penultimate column scenario , 2020 .

[9]  W. Yi,et al.  Progressive collapse test of assembled monolithic concrete frame spatial substructures with different anchorage methods in the beam–column joint , 2020 .

[10]  W. Yi,et al.  Static load test on progressive collapse resistance of fully assembled precast concrete frame structure , 2019 .

[11]  Q. Fang,et al.  Progressive collapse resistance of precast concrete beam-column sub-assemblages with high-performance dry connections , 2019, Engineering Structures.

[12]  Shan Wang,et al.  Analytical investigation on catenary action in axially-restrained reinforced concrete beams , 2019, Engineering Structures.

[13]  Jian Jiang,et al.  Analytical modeling on collapse resistance of steel beam-concrete slab composite substructures subjected to side column loss , 2018, Engineering Structures.

[14]  Yi Li,et al.  New analytical calculation models for compressive arch action in reinforced concrete structures , 2018, Engineering Structures.

[15]  Jian Feng,et al.  Analytical Model for Rotation Response of Singly Reinforced Flexural Members , 2018 .

[16]  Jun Yu,et al.  Numerical study of progressive collapse resistance of RC beam-slab substructures under perimeter column removal scenarios , 2018 .

[17]  Yi Liu,et al.  Progressive Collapse Resistance of Posttensioned Concrete Beam-Column Subassemblages with Unbonded Posttensioning Strands , 2018 .

[18]  Kang Hai Tan,et al.  Numerical investigations on static and dynamic responses of reinforced concrete sub-assemblages under progressive collapse , 2017 .

[19]  Yi Li,et al.  Experimental investigation of RC beam-slab substructures against progressive collapse subject to an edge-column-removal scenario , 2017 .

[20]  Shao-Bo Kang,et al.  Progressive Collapse Resistance of Precast Concrete Frames with Discontinuous Reinforcement in the Joint , 2017 .

[21]  Kang Hai Tan,et al.  Analytical study on reinforced concrete frames subject to compressive arch action , 2017 .

[22]  K. Tan,et al.  Analytical Model for Compressive Arch Action in Horizontally Restrained Beam-Column Subassemblages , 2016 .

[23]  Shuang Li,et al.  Experimental study on the progressive collapse performance of RC frames with infill walls , 2016 .

[24]  Yi Li,et al.  Numerical investigation of progressive collapse resistance of reinforced concrete frames subject to column removals from different stories , 2016 .

[25]  Shao-Bo Kang,et al.  Progressive collapse resistance of precast beam–column sub-assemblages with engineered cementitious composites , 2015 .

[26]  Bing Li,et al.  Load-Carrying Mechanism to Resist Progressive Collapse of RC Buildings , 2015 .

[27]  Kang Hai Tan,et al.  Analytical model for the capacity of compressive arch action of reinforced concrete sub-assemblages , 2014 .

[28]  Kang Hai Tan,et al.  Experimental and numerical investigation on progressive collapse resistance of reinforced concrete beam column sub-assemblages , 2013 .

[29]  Youpo Su,et al.  Progressive Collapse Resistance of Axially-Restrained Frame Beams , 2009 .

[30]  Yan Xiao,et al.  Experimental Study on Progressive Collapse-Resistant Behavior of Reinforced Concrete Frame Structures , 2008 .

[31]  Walter Kaufmann,et al.  Tension Chord Model for Structural Concrete , 1998 .

[32]  R. Park,et al.  The lateral stiffness and strength required to ensure membrane action at the ultimate load of a reinforced concrete slab-and-beam floor , 1965 .