Daisuke Hayashi and Kohei Nagai
To solve the reinforcement congestion, mechanical anchorage is increasingly popular in use instead of conventional hook rebar. However, the bond performance between the rebar and…
Abstract
Purpose
To solve the reinforcement congestion, mechanical anchorage is increasingly popular in use instead of conventional hook rebar. However, the bond performance between the rebar and concrete and the range of stress transfer between the two are still not well understood. The purpose of this study is to study the bond performance and failure mechanisms between reinforcement and concrete around an anchorage zone in a structural element.
Design/methodology/approach
In this study, simulations were carried out by 3D RBSM (Rigid Body Spring Model). This approach divided a problem of interest into elements, namely concrete and steel elements. And to simulate the failure of anchorage of RC, the steel element size is set according to the geometry complexity of the reinforcing bar. By using this method, two simulation cases of anchorage failure were carried out.
Findings
This paper shows that simulations demonstrated good agreement with experimental data in terms of anchorage capacity, crack pattern, and failure mode. This indicates that RBSM analysis can simulate the failure behavior governed by complex cracks.
Originality/value
This paper indicates the analytical approach to investigate the anchorage performance of RC.
Details
Keywords
This study aims to examine how the COVID-19 pandemic affected telework initiatives in Japanese companies and investigate the factors that affect telework based on the technology…
Abstract
Purpose
This study aims to examine how the COVID-19 pandemic affected telework initiatives in Japanese companies and investigate the factors that affect telework based on the technology, organization and environment (TOE) model, through the analysis of published documents.
Design/methodology/approach
Document analysis was adopted. Documents were collected from English news articles in the Nikkei Asian Review and Nikkei Asia which cover Japan's economy, industries and markets. The results of surveys by the Persol Research Institute and Tokyo Chamber of Commerce and Industry were also provided to discuss factors promoting and hindering telework. Content analysis was adopted to analyse the documents.
Findings
COVID-19 had an unavoidable impact on the implementation of telework that the government had previously failed to instigate. Japanese listed companies tend to implement telework, whereas small- and medium-sized companies are struggling. The ratio of telework has been low even after the declaration of the state of emergency because there exist organizational, technological and environmental barriers to telework in Japan.
Originality/value
This study contributes to discussions on work style reform by focusing on the impacts of the COVID-19 pandemic on telework. This research also gives new insight into operationalization of telework in organizations not only in Japan but also in other countries known for low rates of telework and inflexible work styles such as Korea.