Experimental and analytical evaluation of a low-cost seismic retrofitting method for masonry-infilled non-ductile RC frames

บทความในวารสาร

ผู้เขียน/บรรณาธิการ

กลุ่มสาขาการวิจัยเชิงกลยุทธ์

ไม่พบข้อมูลที่เกี่ยวข้อง

รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่ง: Srechai J., Leelataviwat S., Wongkaew A., Lukkunaprasit P.

ปีที่เผยแพร่ (ค.ศ.): 2017

วารสาร: Earthquake and Structures (2092-7614)

Volume number: 12

Issue number: 6

หน้าแรก: 699

หน้าสุดท้าย: 712

จำนวนหน้า: 14

นอก: 2092-7614

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85026730639&doi=10.12989%2feas.2017.12.6.699&partnerID=40&md5=d4c487cf73e4daa4188a4726bf77287e

ภาษา: English-Great Britain (EN-GB)

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บทคัดย่อ

This study evaluates the effectiveness of a newly developed retrofitting scheme for masonry -infilled non-ductile RC frames experimentally and by numerical simulation. The technique focuses on modifying the load path and yield mechanism of the infilled frame to enhance the ductility. A vertical gap between the column and the infill panel was strategically introduced so that no shear force is directly transferred to the column. Steel brackets and small vertical steel members were then provided to transfer the interactive forces between the RC frame and the masonry panel. Wire meshes and high-strength mortar were provided in areas with high stress concentration and in the panel to further reduce damage. Cyclic load tests on a large-scale specimen of a single-bay, single-story, masonry-infilled RC frame were carried out. Based on those tests, the retrofitting scheme provided significant improvement, especially in terms of ductility enhancement. All retrofitted specimens clearly exhibited much better performances than those stipulated in building standards for masonry-infilled structures. A macro-scale computer model based on a diagonal-strut concept was also developed for predicting the global behavior of the retrofitted masonry-infilled frames. This proposed model was effectively used to evaluate the global responses of the test specimens with acceptable accuracy, especially in terms of strength, stiffness and damage condition. ฉ 2017 Techno-Press, Ltd.

คำสำคัญ

Macro model, Masonry infill, non-ductile frame, Seismic retrofitting