近年各國環保意識日益提升，微振動技術因其永續與低成本的優勢而受到重視。然而，此技術之應用多侷限於地震分析，少有延伸至大地工程範疇。有鑑於此，本文選擇相對低成本的單站式水平垂直頻譜比（HVSR）分析作為研究主軸，探討其技術原理及在大地工程之應用。
本文依據不同研究主題，各章研究場址有所差異。在基礎性質探討方面，第五章利用日本京都盆地的鑽探資料與微振動分析成果，討論該技術在量化地盤剪力波速度特性的潛力。研究結果顯示，穩定的HVSR尖峰可對應特定邊界的共振頻率，而尖峰振幅則可作為放大係數的參考指標。此外，第六章進一步使用台灣花東地區的五個地震站，驗證微振動HVSR在推估地震的共振頻率可行性，地震事件包含2016美濃地震、2022關山地震、2022池上地震。
另一方面，第七章探討微振動HVSR於大地工程之實務應用，其主題包含邊坡穩定評估、脆弱性場址分級，以及震後觀察等三個面向。在邊坡穩定性方面，研究顯示透過布設密集微振動側站，可有效量化台南市六甲區南勢坑邊坡在不同位置的動態反應差異，並由異向性分析成果推估潛在地滑方向。其次，針對場址脆弱性評估，本文提出一項名為「TGDI評估」的新方法：透過「場址-TGDI」與「TGDI閾值」的比較，以劃分場址脆弱性等級。TGDI評估透過2016年美濃地震在台南市的災害案例，初步驗證其構想的可行性。最後，在2022年池上地震震後觀察中，本文發現我國東部建築可能因場址效應或地盤—結構共振問題而發生震損，表明當地應謹慎評估老舊公共設施的耐震性能。總結而言，本文研究成果顯示在探討大地工程實務問題上，微振動分析是一種可以提供良好適用性、並具有操作簡便之優點的處理方法。

This study aimed to apply microtremor techniques in geotechnical engineering to explore new applications. To this end, the microtremor HVSR (Horizontal to vertical spectral ratio) was linked to ground S-wave responses based on the quasi-transfer spectrum theory. Specifically, signals recorded by the JU410 vibrameter were analyzed and cross-validated using borehole data, seismic recordings, and inclinometer measurements to evaluate their correlation with ground response. The results indicate that HVSR spectra are related with geological conditions, and their HVSR peaks can be used to identify resonance frequencies of S-wave during earthquakes. Additionally, microtremor measurements are effective in capturing the dynamic response of slopes. When applied independently, HVSR analysis revealed that damage events from the 2022 Chihshang earthquake were related to site effects. When combined with TGDI (Taiwan ground deformation index) assessment, the HVSR analysis demonstrated significant efficacy in classifying site vulnerability. In conclusion, microtremor techniques hold significant potential in geotechnical engineering.

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