本研究團隊過去已成功將三維解耦分析方法應用於開挖引致之不同基礎型式及鄰房位置之鄰房損害之分析及探討，但對於工程實務上常量測之層間角變量與實際反應結構損害之跨間角變量間之關係，仍需進一步釐清及討論。因此本研究分為兩大主軸，第一項主軸為將獨立基腳鄰房結構物置於開挖區中心及開挖角隅區之間三種位置，並根據解耦分析結果，探討開挖角隅效應對鄰房角變量及鄰房損害之影響。第二項主軸以板式筏基及筏基為基礎之鄰房結構物作為研究對象，並以增加樓層數的方式改變其結構勁度，包括4F、8F及12F結構物。
第一項主軸之研究結果顯示，三種鄰房位置確實會受角隅效應影響而使開挖引致之地表沉陷及基礎垂直差異沉陷減小，而三者之基礎角變量大約等於跨間角變量，但層間角變量仍不等於基礎角變量。此外隨著鄰房位置逐漸向開挖角隅區靠近，鄰房之短軸損害可能反而提高。影響其損害之因素，除了角變量也需同時考量平行開挖區地表沉陷曲線之曲率影響，才能更加完善地評估開挖引致之鄰房損害潛勢。
第二項主軸之研究成果顯示，鄰房結構勁度增加，可使開挖引致之各樓層之層間角變量逐漸趨於一致，以及使層間角變量與跨間角變量之差異減小，但層間角變量仍不足以代表跨間角變量。因此，工程上使用層間角變量評估鄰房損害的做法，可能低估或誤判實際之結構損害潛勢。此外結構勁度提高能使上部結構之損害減小，但高樓層結構物之損害反而可能發生於地下室及基礎位置，值得工程實務參考。

A Three-Dimensional Decouple Analysis Method (3D DAM) has been successfully used to study the excavation-induced adjacent building damage behavior for different types of foundations and different adjacent building locations in recent years by previous researchers of our research team. However, further clarification and discussion are needed for the relationship between the measured story drift ratio and span drift ratio, which is reflecting the structural damage in engineering. This study is mainly divided into two research parts. The first part is to place the spread footing adjacent building in three locations between the center of the excavation area and the excavation corner area. According to the results of the 3D DAM, the influence of the excavation corner effect on the angular distortion behavior of the adjacent building and the damage to the adjacent building was studied. The second part is to adopt a mat foundation and raft foundation for the adjacent building as the research object. And changes its structural stiffness by increasing the number of floors, including 4F, 8F, and 12F structures.
The results of the first part showed that the three adjacent building locations are indeed affected by the corner effect, which reduces the ground settlement caused by excavation and the vertical movement foundation, and the bay angular distortion of the three is approximately equal to the span drift ratio. However, the story drift ratio is still not equal to the bay angular distortion. In addition, as the location of the adjacent building gradually approaches the excavation corner area, the short-axis damage of the adjacent building increases. And the factors affecting its damage, in addition to the angular distortion, also need to consider the influence of the curvature of the ground settlement curve which is parallel to the excavation area to be better assess the damage potential of the adjacent building caused by excavation.
The results of the second part showed that the structural stiffness of the adjacent building increases, but the story drift ratio of each floor caused by excavation gradually tends to be consistent, and the difference between the story drift ratio and the span drift ratio decreases, but the story drift ratio is still not enough to represent the span drift ratio. Therefore, the use of the interstudy story drift ratio to evaluate the damage behavior of adjacent buildings may underestimate or misjudge the actual structural damage potential. In addition, the increase in structural stiffness can reduce the damage to the superstructure, but the damage to the high-rise structure occurs in the basement and foundation position. In addition to the damage to the adjacent building, it may even ignore its damage.

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