Out-of-Plane Shaking Table Tests on Seismic Response of RC Frame Infilled with a New Type of Shale Fired Heat-Insulation Blocks

Jian Wu,Li-Dan Zhang,Qing Yu,Bo Wang

doi:10.1155/2020/5091707

Abstract

Shale fired heat-insulation block, which is made of shale, fly ash, building rubbish, and waste paper, is a new type environment-friendly product. In order to study the mechanical properties of shale fired heat-insulation block walls, four full-scale walls were tested under El-Centro, Taft, and Ninghe earthquakes using shaking table equipment, in which the influence of the spacing of cast-in-place belt and the connection between the wall and the frame on the out-of-plane seismic performance of the wall was taken into account. The subject of this study is mainly about out-of-plane dynamic response of masonry walls in terms of frequency, displacement, and acceleration. It could be concluded that the cast-in-place belt and the rigid connection between wall and RC frame could effectively reduce the out-of-plane seismic response of the infill masonry wall. Finally, the recommendations for the use of this type of block in the structure are given.

Highlights

Masonry walls, whether in traditional rural masonry structures or urban high-rise buildings, are widely used. e effect of earthquake should be considered in the process of structural design in most areas of China [1]
Sajid et al [6] investigated the effect of vertical stresses and flanges on the lateral in-plane response of the unreinforced brick masonry walls, and it could be concluded that the two factors significantly improved seismic response of URBM walls
Kariou et al [24] investigated the out-of-plane response of masonry walls strengthened with textile-reinforced mortar (TRM), and the results suggested that TRM significantly increased the load-bearing capacity of masonry walls

Summary

Introduction

Whether in traditional rural masonry structures or urban high-rise buildings, are widely used. e effect of earthquake should be considered in the process of structural design in most areas of China [1]. E in-plane mechanical properties of steel frames or concrete frames infilled with masonry can be found in the literature [8,9,10,11,12,13], and unreinforced masonry walls, being reinforced by steel frames or concrete frames, could be strengthened with other methods [14,15,16,17,18]. Kariou et al [24] investigated the out-of-plane response of masonry walls strengthened with textile-reinforced mortar (TRM), and the results suggested that TRM significantly increased the load-bearing capacity of masonry walls. Some researchers used shaking table tests to study the out-of-plane performance of masonry walls. Considering that the compressive strength of shale fired heat-insulation block and the in-plane performance of masonry walls have been studied [31], this paper mainly investigates the out-of-plane seismic performance of masonry walls strengthened with RC frames. In order to study the role of the spacing of cast-in-place belt and connection modes between the infill wall and frame, four full-scale single-layer single-span infilled frame specimens are designed through the orthogonal test

Experimental Program

Experimental Results and Discussion

A10 A10 A6

A10 C20

Further damage to the wall