Post-construction tensile load and strain behaviour of geogrids arranged in full-scale high walls

Conference proceedings article

ผู้เขียน/บรรณาธิการ

กลุ่มสาขาการวิจัยเชิงกลยุทธ์

ไม่พบข้อมูลที่เกี่ยวข้อง

รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่ง: Kongkitkul W., Tatsuoka F., Hirakawa D., Sugimoto T., Kawahata S., Ito M.

ผู้เผยแพร่: Hindawi

ปีที่เผยแพร่ (ค.ศ.): 2010

หน้าแรก: 1605

หน้าสุดท้าย: 1610

จำนวนหน้า: 6

ISBN: 9788563456007

eISSN: 1745-4557

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84906914222&partnerID=40&md5=44b6cc6a29c833bc7f3580a30d0a965f

ภาษา: English-Great Britain (EN-GB)

บทคัดย่อ

Two high geogrid-reinforced soil (GRS) walls, 21.1-m high and 16.7 m-high, were constructed to support a taxi way of Mt. Fuji Shizuoka Airport, Japan, opened June 2009. To ensure small resilient and residual deformation and a high stability during severe earthquakes and heavy rainfalls during service, the backfill, which was well-graded gravelly soil, was well compacted while reinforced with geogrid layers. In the respective walls, a number of electric-resistant strain gages were attached to three geogrid layers to monitor geogrid tensile strains during and after wall construction. In-air tensile loading tests were performed on the geogrids to calibrate the readings of electric-resistant strain gauges against mechanically measured strains. After the end of wall construction, the geogrid tensile strains either increased at a very low rate or were kept essentially constant or noticeably decreased with time. The time histories of geogrid tensile forces were estimated from the measured time histories of geogrid strains by a non-linear three-component elasto-viscoplastic model using model parameters determined by the in-air tensile loading tests. The estimated tensile forces tend to decease with time at many locations or it is only at a very low rate when the geogrid forces tend to increase. It was estimated that, by the end of the prescribed life time (i.e., 50 years), the tensile force in the geogrid would be maintained substantially lower than the design working load and excessive deformation and creep rupture of the geogrid would be utterly unlikely in the two walls.

คำสำคัญ

Elasto-viscoplastic property, Full-scale, Rate-effect, Reinforced-soil