砌石擋土牆之破壞力學分析

A Study on Destructive Dynamics of Rock Breast Wall

楊勝崎(Sheng-Chi Yang)

指導教授 ： 黃宏斌

國立臺灣大學/生物資源暨農學院/生物環境系統工程學研究所/碩士(2006年)

https://doi.org/10.6342/NTU.2006.02406

摘要

生態觀念逐漸抬頭之今日，對於周遭生態砌石結構較混凝土結構更為友善，故砌石結構被大量運用在溪流護岸及擋土工程等設計中。砌石結構於工程界之應用已有一段時間，建立出相當豐富之經驗規則，但在力學分析等理論基礎方面卻是相當缺乏，相關之文獻及研究並不多見，國內工程界尚未建立起一套可靠之設計規範，導致在工程應用上通常只將砌石擋土牆視為等面積之重力式擋土牆進行安定性檢算，並未根據砌石本身之力學特性，探討砌石結構各層間在不同破壞情形下之穩定性。
本研究將嘗試以傳統力學等基礎理論，在二維空間假設下對乾砌石擋土牆進行穩定性分析，根據砌石結構物本身之力學性質，藉由力學平衡及力矩平衡之條件，建立乾砌石擋土牆整體或部分發生滑動、傾倒及沈陷破壞之理論控制方程式，輔以乾砌石擋土牆之模擬試驗，根據試驗結果作為控制方程式之驗證。作為乾砌石擋土牆在安全檢算上之基礎理論，使得砌石結構在使用上能有所憑依，在工程設計上可以根據控制方程式，將各相關參數代入求得安全係數，判斷結構物本身在各式破壞情況下是否穩定。

關鍵字

傳統力學 ； 穩定性分析 ； 砌石擋土牆 ； 控制方程式

並列摘要

Comparing with traditional concrete structures, rockery structures can make it ecological condition, so they are applied into most engineering of revetments and retaining walls. Although application of rockery structures has been applied for years, it’s still lacked of the theory about stability analysis. Reliable rules of rockery structures design. It causes the stability analysis of the rock breast wall is usually analyzed only as the gravity retaining wall. The properties of rockery structures be considered to discover the stability of rockery structures between different influences of external forces.
This study analyzes the reliability of rock breast wall subject in 2-D hypothesis. And it constructs the control formula by simulating the sliding, overturning and settlement behaviors of entire or partial rock breast wall applying rock structure in practice. Therefore, engineering design is able to determine whether the structure is stable under different destructive dynamics by fitting related parameters into this control formula.

並列關鍵字

stability analysis ； rock breast wall ； governing equation

參考文獻

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