Research for developing seismic strengthening methods for masonry buildings in earthquake developing countries

本研究项目分为结构工程实验室试验研究和现场勘察研究两个不同的研究领域。主要研究内容和成果总结如下：(1)结构工程实验室的实验研究：为了研究以下三个不同的研究课题，在大分大学结构工程研究实验室进行了大量的实验研究。每项研究的主要目的是：(A)发展更高的约束砖砌体墙的抗震安全性；(B)研究采用普通钢筋和薄砂浆层、碳纤维布和配筋混凝土墙等不同材料和方法对无筋砖砌体墙的抗震加固方法；以及(C)研究联锁混凝土砌块墙在地震荷载作用下的抗震安全性。作为e…的结果在更广泛的试验研究中，研究了各种试验参数对不同类型砖混砌块墙体抗震性能的影响，研究报告的第2、3、4章分别提供了所有必要的信息和重要的正文结果。(2)现场调查研究：在为期三年的调查期间，进行了两次不同的调查。一个是(A)调查2001年萨尔瓦多地震对砖石建筑结构造成的破坏，另一个是(B)调查适用于大韩民国现有未加固砖石建筑的结构加固和/或修复方法。《研究报告》第5章介绍了2001年萨尔瓦多地震对砖混结构房屋破坏的现场调查结果，第6章分别介绍了对韩国80多座砖混建筑的实地调查结果。较少

The present research project is divided into two different research fields on experimental study in structural engineering research laboratory and field investigation research. Main subjects and research results obtained are summarized in the followings:(1) Experimental studies in structural engineering laboratory:In order to investigate the following three different research subjects, a large number of experimental studies were performed in the Structural Engineering Research Laboratory of Oita University. Main objective of each study is, (a) to develop much higher seismic safety of confined brick masonry walls, (b) to investigate the seismic strengthening methods for un-reinforced brick masonry walls by using different materials and methods such as ordinary steel reinforcing bars and thin mortar layers, carbon-fiber sheets and reinforced concrete walls, and (c) to investigate the seismic safety of interlock concrete block walls subjected to earthquake loading. As the results of the e … More xtensive experimental studies, effects of many experimental parameters on the seismic behavior of different kinds of brick and concrete block masonry walls were investigated, and the all necessary information and important text results are presented in Chapter 2, 3 and 4 of the Research Reports, respectively.(2) Field investigation research:Following two different investigations were conducted during the three-year investigation periods. One is (a) to investigate the damage to masonry building structures caused by the 2001 El Salvador earthquake, and the other is (b) to investigate the structural strengthening and/or restoring methods applied to the existing un-reinforced masonry buildings in the Republic of Korea. Filed investigation results on the damage to masonry buildings by the the 2001 El Salvador earthquake are presented in Chapter 5 of the Research Report, and the field investigation results on more than eighty masonry buildings in Korea are intoroduced in Chapter 6 of the Research Report, respectively. Less