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題 名 | 疏伐木擋土構造物穩定性分析評估=Analysis and Assesment of Wooden Retaining Structure Durability and Stability |
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作 者 | 林德貴; 鍾鳴峰; 徐森彥; 陳威翔; | 書刊名 | 水土保持學報 |
卷 期 | 46:1 2014.03[民103.03] |
頁 次 | 頁955-974 |
分類號 | 441.15 |
關鍵詞 | 疏伐木; 穩定性; 木構造; Forest thinning; Stability; Wooden framing; |
語 文 | 中文(Chinese) |
中文摘要 | 大雪山林道 47K+100 木構造擋土牆為國內第一座以疏伐材及現地土石料共構之大型木構 造擋土牆,該路段為大雪山林道通往小雪山莊及大雪山神木主要通道並兼負聯外交通重任。林 道管理維護採傳統工法施作有其優劣,本研究探討傳統工法與生態工法在林道改善優劣處。現 存林道及其附屬設施如擋土工、排水工等多為傳統工法所構築,在維護管理時,常因地處偏遠 營建物資不易運達,造成施工品質不良,因傳統工法無法與周邊森林環境自然融入等問題。疏 伐木為常運用於生態工法之木質材料,但疏伐木有材料強度較弱及易腐蝕劣化等不利因素,將 使以疏伐木構築之構造物長期耐久性及穩定性逐漸下降而至破壞。本研究將針對疏伐木擋土構 造物工程實例,藉由現地監測及數值分析方式進行木構造擋土牆穩定性評估,建立對木構造擋 土牆長期穩定性評估方式及後續管理維護之參考。 |
英文摘要 | The wooden retaining structure situates at 47K+100 downslope of Da-syue-shan Forest Road is Taiwan’s first large-scale retaining wall which constructed by thinned wood and field material such as soil and rock. The road section was the main access and passage bound for Siao-syue-shan Visitor Center and Da-syue-shan sacred tree. This study evaluates the efficiency of wooden retaining structure and investigates the merit and demerit of conventional and ecological engineering methods in remediation of forest road. For the existing forest road, most of the auxiliary facilities such as retaining wall and drainage system were constructed by conventional engineering method management and maintenance. It is difficult to deliver construction material due to long distance in mountainous area. Eventually, caused bad quality. The wooden structures used by conventional engineering method reveals combined difficulties with natural forest environment. Thinned wood was commonly used as a construction material in ecological engineering method. However, due to the low strength and liable to deterioration, the long term durability and stability of wooden material tend to descend with elapsed time and eventually to failure. In Taiwan, it is very rare in research on the durability and stability of wooden structures. This study evaluates the durability and stability of wooden structure in field site using deterioration detection techniques, in-situ monitoring and numerical analyses. Finally, an evaluation method and sequential maintenance, management method were raised for practical usage in long term stability of wooden retaining structures. |
本系統中英文摘要資訊取自各篇刊載內容。