加勁路堤與基礎系統應用於複合式地震災害之減災表現
Other Title
MITIGATION PERFORMANCE OF GEOSYNTHETIC-REINFORCED EMBANKMENT AND FOUNDATION SYSTEMS UNDER COMPOUND EARTHQUAKE HAZARDS
Journal
中國土木水利工程學刊
Journal Volume
37
Journal Issue
8
Start Page
599
End Page
611
ISSN
1015-5856
Date Issued
2025-12
Author(s)
Abstract
加勁結構物因其施工簡便且柔性變形的特性，其應用已擴及多面向工程設計。位處板塊交界帶之國家，在建築與公共基礎設施上必須納入耐震設計，然而，部分線形構造物難以避免跨越活動斷層。既有研究與現地調查顯示，加勁結構物於地震事件後維持良好穩定；本文以1/15縮尺模型評估加勁路堤與基礎系統作為跨逆斷層之公路路堤的減災效益。結果顯示，相較於傳統剛性擋土路堤，在正規化斷層錯動量為37.5%時，適當設計之加勁系統得降低路堤牆面位移69%，從而提升穩定性。本文並就應用加勁結構物之優勢進行評析，提出適用於跨逆斷層情境之實務地震設計策略。
Geosynthetic-reinforced soil (GRS) structures are increasingly adopted in engineering applications because they are straightforward to construct and can accommodate differential settlement through flexible deformation. In countries located along plate boundaries, such as Taiwan and Japan, buildings and public infrastructure must incorporate seismic design; however, some linear infrastructure inevitably crosses active faults. Prior studies and field surveys show that GRS structures perform well under seismic and tsunami action. This study employs 1:15-scale model tests to evaluate the mitigation effectiveness of geosynthetic-reinforced embankment and foundation systems for highway embankments crossing reverse fault zones. The results indicate that, compared with a conventional rigid retaining wall embankment, a properly designed reinforced system reduces embankment facing displacement by 69% at a normalized fault-displacement ratio (S/H_F) of 37.5%, thereby improving overall system stability. This paper also evaluates the advantages of such GRS structures and proposes practical earthquake design strategies for crossings of active fault zones.
Subjects
地震減災
逆斷層
地工合成材
公路路堤
earthquake hazard mitigation
reverse fault
geosynthetics
highway embankment
Type
journal article