【正文】 ty. Based on the environment, surrounding foundation pit formation condition, hydrogeological condition analysis, according to the relevant standards and procedures, to the foundation pit excavation and support scheme to the demonstration, calculation and optimization. In order to ensure that the supporting feasibility and economy. The main content of this design: supporting scheme selection, calculation of pileanchor retaining structure design, the integral stability analysis of foundation pit excavation, checking against heave stability, design of foundation pit dewatering, foundation pit monitoring and construction. Pileanchor retaining structure design includes the design of slope protection pile design and anchor cable, anchor design specific row number, spacing, length, steel grade and strength of anchor cable, the design of the slope pile including diameter, reinforcement, pile length, depth calculation, concrete grade. By using the calculation method of layered excavation and the equivalent beam method. The overall stability analysis using a simple Sweden slice method. Checking dewatering design including precipitation method selection, construction, foundation pit dewatering well. In addition a brief design and construction of foundation pit monitoring. Key words: deep foundation pile anchor foundation pit stability 華北水利水電大學畢業(yè)設計（論文） 目 錄 摘 要 ....................................................................................................I Abstract .................................................................................................. II 第一章 緒論 ........................................................................................... 1 選題的背景目的及意義 ................................................................................. 1 基坑工程研究現(xiàn)狀 ......................................................................................... 1 第二章 工程地質(zhì)概況 ............................................................................ 3 基坑工程概況 .................................................................................................. 3 場地工程地質(zhì)條件 .......................................................................................... 3 工程環(huán)境條件 .......................................................................................... 3 地層及地基土分層描述 ............................................................................ 3 水文地質(zhì)條件 .......................................................................................... 4 地基土的濕陷性 ....................................................................................... 4 場地地震效應 .................................................................................................. 4 抗震設防烈度 ........................................................................................... 4 抗震地段劃分及場地類別 ......................................................................... 4 地基土液化可能性 ......................................................................................... 5 原位測試 結(jié)果 ................................................................................................. 6 第三章 基坑支護方案選擇及確定 ........................................................ 7 設計依據(jù) ....................................................................................................... 7 基坑支護設計基本要求 ............................................................................... 7 基坑支護方案的選擇及確定 ....................................................................... 8 基坑側(cè)壁安全等級確定 .......................................................................... 8 支護方案的選擇 ..................................................................................... 8 華北水利水電大學畢業(yè)設計（論文） 第四章 基坑 11 剖面樁錨支護結(jié)構(gòu)設計計算 ................................... 11 基坑支護結(jié)構(gòu)參數(shù)說明 ............................................................................ 11 地層力學參數(shù) ...................................................................................... 11 地面附加荷載取值 ............................................................................... 11 計算方法 ............................................................................................. 11 設計水位確定 ...................................................................................... 12 樁錨支護設計 ............................................................................................. 12 第一階段開挖 ...................................................................... 12 第二階段開挖 ...................................................................... 14 第三階段開挖 計算 ..................................................................... 19 第四階段開挖 計算 ..................................................................... 23 樁身配筋計算 ...................................................................................... 26 基坑穩(wěn)定性驗算 ........................................................................................... 28 樁錨結(jié)構(gòu)整體穩(wěn)定性驗算 ..................................................................... 28 抗隆起驗算 .......................................................................................... 30 抗管涌計算 .......................................................................................... 32 第五章 基坑降水設計 ...................................................................... 34 基坑降水方法 ............................................................................................. 34 井點降水計算的前提 ................................................................................. 36 降水的作用 ................................................................................................. 36 降水方案的選擇與計算 ............................................................................. 37 降水方案的選擇 .................................................................