有效固結應力法在水泥土攪拌樁擋土墻土壓力計算中的應用

土木工程論文編號:TM139   論文字數:20813,頁數:59 附任務書，開題報告，文獻綜述，外文翻譯 
目  錄
中文摘要 I
英文摘要 II
目錄 III
1 緒論
      1.1  概述 1
      1.2  本文選題的必要性和背景 3
      1.3  本文的研究內容與擬解決的主要問題 4
 
2 粘性土的不排水抗剪強度
      2.1  引言 6
      2.2  測定土不排水強度的試驗方法 7
          2.2.1  室內試驗 7
          2.2.2  現場試驗 8
 2.3  確定粘性土不排水強度的不同方法 8
 2. 3. 1  Bjerrum法 9
 2. 3. 2  Mesri法 10
 2. 3. 3  大應變不排水強度法（USALS法） 12
 2. 3. 4  再壓縮（Recompression）或再固結（Reconsolidation）法 
  12
 2. 3. 5  SHANSEP法 13
 2. 3. 6  Recompression法與SHANSEP法的對比及適用條件 20
 
3 擋土墻土壓力理論回顧和有效固結應力法
 3.1  土壓力綜述 22
 3.1.1  土壓力的產生及計算簡述 22
 3.1.2  土壓力的類型 22
 3.2  土壓力計算方法 23
 3.2.1  靜止土壓力計算公式 24
 3.2.2  主土壓力計算公式 25
 3.2.3  被動土壓力計算公式 28
 3.3  有效固結應力法 30
 3. 3. 1  有效固結應力法概述 30
 3. 3. 2  有效固結應力法的計算公式推導 31
 3.4  有效固結應力法計算擋土墻上土壓力的方法 34
 3.4.1  主動土壓力情況 34
 3.4.2  被動土壓力 36
 
4 擋土墻土壓力分析算例
 4.1  利用有效固結應力法分析擋土墻土壓力算例 38
 4.1.1  水泥土攪拌樁的概述 38
 4.1.2  算例 38
 4.2  擋土墻土壓力計算公式 39
 4.2.1  有效固結應力法計算擋土墻土壓力的公式 39
 4.2.2   Rankine-Bell公式（水土合算）計算擋土墻土壓力的公式 39
 4.2.3   Rankine-Bell公式（水土分算）計算擋土墻土壓力的公式 39
 4.3   計算結果 40
 4.3.1  EXCEL計算表格 40
 4.3.2  土壓力受力圖 43
 4.3.3  計算結果分析 46
 
5 結論
 5.1  本文結論 48
致謝 49
參考文獻 50

 摘 要: 本文首先闡述了粘性土的不排水抗剪強度特性和變化規律，對擋土墻土壓力計算的有關理論進行綜述，并引用前人的研究，對有效固結應力法進行了概述，提出利用有效固結應力法計算擋土墻土壓力的計算方法和計算公式。然后結合具體的工程算例將有效固結應力法應用于擋土墻兩側土壓力的計算中。在EXCEL表格中，對同一工程實例使用有效固結應力法、Rankine-Bell水土合算法和Rankine-Bell水土分算法分別計算擋土墻的土壓力。最后，根據EXCEL表格計算得到的結果，畫出三種方法計算得到擋土墻土壓力受力圖，包括主動土壓力和被動土壓力受力圖，并對不同的計算結果畫出直方圖進行對比分析。結果表明：有效固結應力法算得的土壓力值均小于其他兩種方法，三種方法計算的主動土壓力相差較大，特別是有效固結應力法和Rankine-Bell水土分算法算得的值，后者是前者的2倍多，而三種方法計算的被動土壓力相差較小。

關鍵詞：有效固結應力法；擋土墻；主動土壓力；被動土壓力；水土合算；水土分算；

Calculation

Abstract：In this paper, the undrained shear strength of cohesive soil characteristics and variation of earth pressure on retaining wall of the theory are reviewed, citing previous studies, the effective consolidation stress method are outlined, proposes to use effective consolidation stress method the calculation of earth pressure on retaining wall and formulas. Then combined with the specific engineering examples ，the effective consolidation stress method is applied to earth pressure of retaining walls on both sides of the calculation. In the EXCEL table, on the same engineering examples, using effective consolidation stress method, Rankine-Bell Combined Calculation of Water and Soil Pressure method and Rankine-Bell Separate Calculation of Water and Soil Pressure method respectively calculation of retaining of earth pressure. Finally, according to the results obtained EXCEL spreadsheet, draw three ways to calculate the earth pressure on retaining wall by the attempt, including the active earth pressure and passive earth pressure by trying to, and draw the histogram of the different results were compared. The results showed: calculated by the effective stress method of soil consolidation pressures were less than the other two methods, three methods to calculate the active earth pressure difference is higher, especially the effective consolidation stress law and the Rankine-Bell algorithm is considered as the value of the land and water points , which is 2 times more than the former, while the three methods to calculate the passive earth pressure is negligible.
Key words：effective consolidation stress theory; earth retaining wall; active earth pressure; passive earth pressure; Combined Calculation of Water and Soil Pressure; Separate Calculation of Water and Soil Pressure;