Experimental Studies on the Behaviors of New Energy-Saving Concrete Self-Insulating Load-Bearing Block Wall under Low-Cycle Cyclic Loading

Bashir H Osman,Zhongfan Chen

doi:10.1155/2018/4214532

Bashir H Osman, Zhongfan Chen

Open Access

https://doi.org/10.1155/2018/4214532

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Abstract

Masonry walls are usually designed to resist the effect of lateral and gravity loads resulting from wind or earthquake excitations. This research aimed at investigating the inelastic behavior of a new energy-saving concrete self-insulating load-bearing block wall (ECSLBW) under in-plane cyclic loading. To provide stronger bond between the concrete block units better than the ordinary concrete masonry units, a new masonry system of concrete blocks with special configurations was made. In this experiment, three new self-insulated block wall specimens were designed, manufactured, and tested. Furthermore, self-supporting structural column-ring beam structure system was used to observe the failure mode of the walls. Moreover, the mechanical properties and seismic indexes of the walls under lateral low-cyclic loading were analyzed, including hysteretic and skeleton curves, stiffness degradation, ductility, and energy losses. The results showed that the new energy-saving block wall can meet the seismic shear calculation under 8-degree rare earthquake and meet the antiseismic fortification target in 8-degree area. Furthermore, self-contained system can greatly improve the seismic shear capacity of the wall. Finally, the seismic shear capacity of the concrete column block masonry was calculated, and the technical application method of block masonry structure was recommended.

Highlights

Masonry is used worldwide for many centuries as a common construction material
Reinforcement was used in masonry shear walls to resist lateral stresses generated in high regions of seismic action, which results in overturning moments due to simultaneous gravity and lateral loads during seismic excitation
Masonry shear walls (MSWs) are usually designed to resist the effect of lateral load and gravity load resulting from wind loading or earthquake excitation. e design criteria depend on many factors, including the magnitude of axial loading, amount of flexural and shear reinforcement, wall aspect ratio (H/L), and the mechanical properties of masonry [1,2,3,4]

Summary

Introduction

Masonry is used worldwide for many centuries as a common construction material. the weakness of unreinforced masonry systems is mentioned during earthquakes. Reinforcement was used in masonry shear walls to resist lateral stresses generated in high regions of seismic action, which results in overturning moments due to simultaneous gravity and lateral loads during seismic excitation. Masonry shear walls (MSWs) are usually designed to resist the effect of lateral load and gravity load resulting from wind loading or earthquake excitation. The developed system of a new type of clay masonry was used in the construction of single-story buildings which has good thermal isolations, with the capability to be used in earthquake zones [14,15,16,17,18]. There is a vital need for a comprehensive study to evaluate the parameters that affect the behavior of the new Advances in Materials Science and Engineering energy-saving concrete self-insulating load-bearing block wall (ECSLBW) under earthquake excitation

Methods

Results

Conclusion