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

本研究项目分为结构工程研究室内实验研究和现场调查研究两个不同的研究领域。主要课题和研究成果总结如下：(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)开发更高抗震安全性的约束砖砌体墙；(b)研究采用普通钢筋加薄砂浆层、碳纤维板和钢筋混凝土墙等不同材料和方法对非加筋砖砌体墙进行抗震加固的方法；(c)研究互锁混凝土砌块墙在地震荷载作用下的抗震安全性。作为更广泛的试验研究的结果，研究了许多试验参数对不同类型砖和混凝土砌块砌体墙体抗震性能的影响，所有必要的信息和重要的文本结果分别在研究报告的第2章、第3章和第4章中给出。(2)实地调查研究：在三年的调查期间进行了两次不同的调查。一项是(a)调查2001年萨尔瓦多地震对砖石建筑结构造成的破坏，另一项是(b)调查适用于韩国现有未加固砖石建筑的结构加固和/或修复方法。《报告书》第5章介绍了2001年萨尔瓦多地震对砖石建筑的现场调查结果，第6章介绍了对国内80多个砖石建筑的现场调查结果。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