Development of Efficient Retrofit Method for Masonry Houses in Earthquake Prone Regions Considering Local availability, Applicability and Acceptability

考虑当地可用性、适用性和可接受性的地震多发地区砌体房屋高效改造方法的开发

基本信息

批准号：
14208043
负责人：
MEGURO Kimiro
金额：
$ 14.89万
依托单位：
The University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2004
项目状态：
已结题

项目摘要

Masonry structures are widely used due to its low cost and construction easiness especially in developing countries. In spite of the efforts to provide guidelines for the construction of sound earthquake resistant houses, every year casualties due to collapsing masonry houses during earthquakes are reported. Although it is clear that retrofitting the existing housing stock is urgent, it has not been implemented extensively. To overcome this situation, retrofitting techniques involving inexpensive construction materials available in remote regions and low-skill labor as well as aggressive educational campaigns are needed. This research project proposes an innovative retrofitting method for adobe/masonry houses, which consists of using polypropylene bands arranged in meshes. These bands, which are commonly used for packing, are resistant, inexpensive, durable and worldwide available.In the research, installation procedures are discussed and experiments for material properties and dynamic behavior of masonry structures with and without retrofit by proposed method are carried out to verify the suitability of the proposed technique. Although cracking is not prevented by PP-band meshes, they efficiently increase the structure seismic capacity, particularly its ductility. The proposed retrofitting method improved the structure performance allowing a life safety damage level for a masonry structure subjected to a JMAI 6+ shaking.

砌体结构被广泛使用，因为它的低成本和构造易于易于构建，尤其是在发展中国家。尽管努力为建造抗震动地震的房屋提供指导方针，但据报道，每年由于地震期间因砖石房屋而崩溃而导致的伤亡。尽管很明显，紧急改造现有的住房库存是紧迫的，但尚未广泛实施。为了克服这种情况，需要进行涉及偏远地区和低技能劳动力的便宜建筑材料的改造技术以及积极的教育运动。该研究项目提出了一种针对Adobe/Masonry House的创新改造方法，该方法包括使用以网格排列的聚丙烯条带。这些频段通常用于包装，具有耐药性，廉价，耐用性和全球可用性。在研究中，讨论了安装程序，并实验具有和不进行改造的砌体结构的材料性能和动态行为，以验证提议的技术的适用性。尽管PP波段网格无法阻止开裂，但它们有效地增加了结构地震能力，尤其是其延展性。提出的改装方法改善了结构性能，从而使砌体结构的生命安全损害水平受到JMAI 6+摇动。