Analysis of the Stiffness Ratio at the Interim Layer of Frame-Supported Multi-Ribbed Lightweight Walls under Low-Reversed Cyclic Loading

Abstract

By conducting low-reversed cyclic loading tests, this paper explores the load-bearing performance of frame-supported multi-ribbed lightweight wall structures. The finite-element software (OpenSees) is used to simulate the process with the shear wall width (at the frame-supported layer) and different hole opening approaches (for multi-ribbed lightweight walls) as variables. The conclusions reflect the influence of the stiffness ratio at the interim layer on the load-bearing performance of the structure. On this basis, the paper identifies the preferable numerical range for engineering design, which provides a solid foundation for the theoretical advancement of the structures in this study.

Investigating the Retrofitting Effect of Fiber-Reinforced Plastic and Steel Mesh Casting on Unreinforced Masonry Walls

“…Nowadays, the utmost number of unreinforced masonry structures are constructed without considering any seismic resistance features, especially in rural areas [2]. On the other side, it has been observed from the recent earthquake around the globe that masonry structures are highly seismic vulnerable [3]. A devastating earthquake having a magnitude of 7.6 caused more than 73,000 fatalities, injuring about 70,000 local residents and ultimately affecting 3.5 million people in the northwest region of Pakistan, specifically Kashmir [4].…”

Damage Index Calibration of Frame-Supported Concealed Multi-Ribbed Wall Panels with Energy-Efficient Blocks

“…Two different composite FSCMR wall panels are chosen (see Figure 5 and Table 1) for this study, with 1 /2 reduced prototype scales, and low-reversed cyclic loading tests are carried out. Please see References [15,17] for the experimental procedures and observed phenomena. Later, as the model for damage evaluation is established, the paper makes use of the nonlinear finite element software OpenSees, and adjusts the parameters of concern to simulate force impulsion.…”

“…(1) Outstanding structural integrity and working performance; (2) Exceptional force-bearing performance; (3) Easy adjustment of structural stiffness; Because the residence pilot projects have taken place in Yinchuan, Shanxi, Henan, and many other provinces, the CMR wall panel structure has reached into to every aspect of social production and practice (see Figure 2), and efforts of the country toward this end have yielded both economic and social results [15][16][17]. Under such circumstances, the Ministry of Housing and Urban Development, P.R.…”