Numerical Analysis for Progressive Collapse of a Multi-Storey Building due to an Explosion in its Basement

Huang

2013

AMR

Self Cite

Three-stage simulation method [ was adopted to simulate the collapse process of a continuous girder bridge after being impacted by ship with considering pile-soil dynamic interaction and bridges initial stress before collision. The deformation, distribution of stress and responses of bridge were emphatically analyzed in this paper, which revealed the dynamic response and collapse mechanism of continuous girder bridge under impact load.

Section: Resultsmentioning

confidence: 99%

Numerical Simulation for Progressive Collapse of Continuous Girder Bridge Subjected to Ship Collision Based on Three-Stage Simulation Method

Huang

2013

AMR

Self Cite

“…Progressive collapse of the unprotected model and the dynamic response of the protected model are analyzed by using the three-stage simulation method (TSSM) [5].…”

Section: Resultsmentioning

confidence: 99%

Numerical Simulation for Progressive Collapse and Protection of a Multi-Storey Building due to an Explosion in its Basement

2012

AMM

Self Cite

The progressive collapse of a multi-story building and its protective effect with aluminum foam under an explosion in its basement are numerically investigated in this paper. The three-dimensional coupling model composed of a multi-story frame structure with a basement and the surround soil is modeled using ANSYS/LS-DYNA. The progressive collapse of the entire structure under explosive impact and the protective effect of the aluminum foam are simulated using the proposed three-stage simulation method (TSSM). The result shows that, the aluminum foam as a protective layer can reduce the impact effects very well, and then can prevent progressive collapse effectively. The same model is also simulated by direct simulation method (DSM) and alternative load path method (ALPM). By comparison with the two methods, the TSSM is illustrated practical, accurate and economic for the analysis of progressive collapse.

“…In order to verify the correctness of the model, Three-Stage Simulation Method [7] is adopted to compare with the traditional methods, ALPM and DSM.…”

Section: Numerical Investigationmentioning

confidence: 99%

Tilt Response of Multi-Storey Building of Different Types due to Progressive Collapse of the Adjacent Underground Structure under Internal Blast Loading

Song

2012

AMM

Self Cite

This paper numerically investigates the tilt response of multi-storey buildings due to progressive collapse of the adjacent underground structure under internal blast loading. The software LS-DYNA is utilized to establish a three-dimensional coupled model composed of the underground structure, the soil around and the adjacent above-ground structure. In order to reduce the computational cost, an efficient computational method, Three-Stage Simulation Method (TSSM), is put forward. Three different methods, Alternative Path Load Method (APLM), Direct Simulation Method (DSM) and TSSM, are used to analyze the same model which illustrates the correctness of the model and the proposed method. By comparing tilt response of the above-ground structure of different types due to progressive collapse of underground structure under its internal blast loading, it is found that the tilt response of the above-ground structure of different types is related to the foundation of the structure. For example, compared with the frame structure with basement, the frame-shear wall structure with basement can prevent structure from great tilt response. However, the tilt response of the frame-shear wall structure with raft basis is larger than that of the frame.