Design and numerical analysis of Cross-Laminated bamboo (CLB) buildings with different rocking wall configurations

Abstract

Engineering bamboo attracts increasing attention due to its renewable, low-carbon properties as well as the high strength-to-weight ratio. This paper proposed a displacement-based design (DBD) method for cross-laminated bamboo (CLB) rocking wall buildings based on experimental tests. The DBD was to control the story drift limitation considering the collapse prevention (CP) hazards level. The DBD accounted for the detailed design of prestressed tendons (PT) and conventional friction dampers (CFD). Segmented and monolithic rocking wall configurations were designed based on DBD and applied in the building. The simplified numerical models (SNM) for those two rocking walls were established in ABAQUS using cartesian connectors. Then two three-story CLB building models, i.e., X-LamBR1 with segmented rocking wall and X-LamBR2 with monolithic rocking wall were developed. Modal analysis and time history analysis were conducted with these two models. Smaller inter-story displacement, acceleration, and shear force were observed in X-LamBR2. Simulation results indicated that building with a monolithic rocking wall configuration performed better under earthquake excitation.