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研究生： 徐瑞宏
Ruei-hung Shiu
論文名稱： 道路管線埋設對鋪面強度衰減之影響研究
The Effect of Pavement Strength Decay on Buried Pipeline
指導教授： 林志棟
Jyh-Dong Lin
口試委員:
學位類別： 博士
Doctor
系所名稱： 工學院 - 土木工程學系
Department of Civil Engineering
畢業學年度： 98
語文別： 中文
論文頁數： 186
中文關鍵詞： 振態 、振動頻率 、沉陷量 、彈性模數 、單位重 、集中質量
外文關鍵詞： frequency, trench, settlement, lumped mass, vibration
相關次數： 點閱：9  下載：0 
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    • 本研究經由集中質量系統之動力反應方程式推導，建立一種以現有道路結構之動力特性為基準的管線及回填材料設計方法。該理論方法以既有道路結構之動力特性為標準，必需根據現有之道路結構才能進行管線及回填材料之設計。設計參數為材料彈性模數及單位重。設計條件為維持原有道路系統之基本振動頻率與振動形態。可根據不同的設計需求，如埋管深度、管徑、鋪面沉陷量、回填材料種類或施工成本等進行評估，以達到需求目標。本研究透過該理論方法，建立一種簡化評估分析程序，應用於分析管線設計施工對鋪面沉陷量造成之影響，並由材料應力-應變關係估算鋪面強度之衰減程度。經由有限元素法分析結果之比對，評估該理論方法具有足夠之計算精度，可以提供工程界快速設計及分析使用。

    A novel lumped mass system of dynamic analysis procedure is presented to evaluate the pavement strength decay on buried pipeline. According to the vibration frequency of original road structure, we can design the pipeline and backfill materials in trench by choosing specific gravity and modulus of elasticity. Based on the natural frequency and mode shape of the buried pipeline system, we could calculate the accumulative settlement to evaluate the strength decay of pavement by checking stress-strain relationship. With increasing the accumulative settlement, the worser the pavement strength decays. It would be shown that the precision of lumped mass system operation is as well as to the finite element analysis results. The design procedure of lumped mass system can be satisfied with the requirement of designing for burial depth, radius of pipe, settlement, backfills and the cost evaluation of construction. It would be provided the advantage of design procedure to the road-engineering and pipeline burial construction projects in this research.

    摘 要 I ABSTRACT II 誌 謝 III 符號說明 IV 第一章 緒論 1 1-1 前言 1 1-2 研究目的 2 1-3 研究範圍 3 1-4 研究方法 3 1-5 研究架構及流程 4 第二章 文獻回顧 7 2-1 管線設計 7 2-1-1 耐震設計規範與一般規範之差異 7 2-2 一般管線設計之影響因素 8 2-2-1 管線材質 8 2-2-2 垂直荷重 12 2-2-3 回填材料規格 21 2-2-4 其它影響因素 22 2-3 管線埋設對道路結構造成之影響 23 2-3-1 車轍破壞 23 2-3-2 疲勞破壞(鱷魚狀裂縫) 23 2-3-3 管溝回填土壓實度不足之影響 24 2-3-4 負拱效應(Negative Arching effect) 25 2-4 土壤壓實度與單位重之關係 25 2-5 彙整說明 27 第三章 研究方法 29 3-1 研究目的 29 3-2 研究方法 29 3-3 研究步驟 30 3-4 研究工具及設備 36 3-5 研究結果分析比較 36 第四章 理論分析 37 4-1 道路材料結構系統之靜力學分析 37 4-1-1 道路鋪面結構之力學特性 37 4-1-2 道路鋪面多層結構力學分析 38 4-2集中質量系統分析理論 39 4-2-1 基本理論說明 39 4-2-2 執行程序概述 40 4-2-3 道路結構分析模型之推導 40 4-2-4 道路結構基本振態分析 44 4-2-5 道路挖掘回填材料對道路結構系統之影響 45 4-2-6 管線構造對道路結構系統之影響 50 4-2-7 人手孔等地下構造物對道路結構系統之影響 63 4-2-8 有限元素數值模擬動力反應分析 66 4-3 道路鋪面結構之有限元素分析 68 4-3-1 有限元素分析過程說明 68 4-3-2 道路鋪面結構系統之有限元素分析模型建置 69 4-3-3 管線埋設模型 74 4-4 車輛動態荷重分析 75 4-4-1 車輛輪跡接觸壓力 75 4-4-2 載重作用位置 78 4-4-3 額外作用於人孔週邊裁切區域水平力及垂直力之評估 80 4-4-4 動態荷重函數 88 4-4-5 動態歷時分析 89 第五章 SOLIDWORKS軟體分析結果及討論 93 5-1 道路結構與人手孔構造所產生之互制影響 93 5-2 回填材料及臨近區域之鋪面受力行為 97 5-3 彙整說明與討論 100 第六章 SAP2000有限元素分析結果及討論 102 6-1 道路面層輪跡作用點之應力分佈情形 102 6-2 人孔週邊材料之應力與變形之分析結果 109 6-3 由SAP2000軟體分析所得之輪跡載重臨界作用位置 110 6-4 重車輪胎尺寸影響 111 6-5 車速之影響 112 6-6 人手孔構造及鄰近材料之彙整說明 112 6-7 管線構造及道路系統之有限元素模型建置 114 6-8 管線構造各區域承受車輛載重之有限元素分析結果 115 6-9 分析層厚度設定之敏感度分析說明 123 第七章 簡化力學評估分析程序之建立 125 7-1 設計及分析程序 125 7-1-1 建立集中質量系統在自由振動情況下各構造 125 7-1-2 計算集中質量系統材料自重所造成之累積變形量曲線 125 7-1-3 計算集中質量系統承受車輛輪重(活載重)所造成之累積變形量曲線 126 7-1-4 檢核鋪面層累積變形量 127 7-2 案例說明 128 7-3 工程應用 130 7-4 集中質量簡化評估分析程序與有限元素法之分析精度說明 131 第八章 結論與建議 136 8-1 採用集中質量系統理論及設計方法之特性 136 8-2 管溝埋設物及回填材料設計 139 8-3 鋪面變形量及耐久性評估 141 8-4 基底層土壤或岩層的剛性變化 142 8-5 結 論 143 8-6 建議 143 參考文獻 146 附錄A 151 附錄B 152 附錄C 158

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