基坑開挖圍護設計

土木工程論文編號:TM126   論文字數:10466,頁數:46  附CAD圖

目錄
基坑開挖圍護設計 I
摘 要 I
Abstract II
目錄 III
1緒論 1
2 圍護方案設計說明 2
 2.1 設計依據 2
 2.2 工程概況 2
 2.3 基坑周邊環境分析 3
 2.4 工程地質報告分析 3
 2.5 圍護方案的確定 5
 2.6 基坑工程措施 7
 2.7 基坑工程的現場檢測 8
 2.8 應急搶救措施 10
 2.9 周邊建筑物、道路及市政管線變形分析與保護措施 10
3 圍護構計算分析說明 12
 3.1 土層參數 12
 3.2 土壓力計算 12
 3.3地面超載 12
 3.4 開挖深度為6.05m計算 13
4 總結與展望 37
致謝 41
參考文獻 42

摘 要
    本工程是由浙江經協集團有限公司開發的。工程由辦公用房及相應的地下車庫組成。由浙江省建筑設計院有限公司設計。內容涉及：圍護體系方案選擇、圍護體系具體做法、基坑開挖的施工要求、基坑現場監測及應急措施、圍護結構設計說明、圍護結構設計施工圖等。
    工程位于杭州市拱墅區，白石路以西，善賢路以南，南面為空置的二層樓房（框架結構，淺基礎）。
    該項目0.00相對于黃海高程5.7m，該項目場地地坪的黃海標高平均為4.40m。    對于本工程結構設計說明部分，采用部分手算，部分采用軟件理正和啟明星計算。這樣結合計算有利于更多知識的獲得和學習。
    本工程開挖深度較深，分別為5.75m、5.95m、7.75m、8.15m。基坑開挖范圍土層以粉質粘土為主，基坑底處于粉質粘土和淤泥交界處，工程性質較差。
經過比較和分析，圍護體系采用排樁加支撐方案。主體采用鉆孔灌注樁支護，以水泥攪拌樁止水組成支擋結構，同時為減小側向位移變形，增強基坑邊坡的穩定性，在基坑內設置內支撐。該方案應用廣泛，也相當成功。

關鍵詞：基坑  鉆孔灌注樁 水泥攪拌樁 圍護
Excavation design envelo
  Abstract
This project is from Zhejiang Province by the Association for Development Group Co., Ltd.. Works by the office space and the corresponding component of the underground garage. By the Architectural Design Institute Co., Ltd. Design, Zhejiang Province. Cover: envelope system options, envelope system, the specific practices of the construction requirements of excavation, foundation-site monitoring and emergency measures, building envelope design that the design of retaining structure, such as working drawings.     Gongshu District project is located in Hangzhou, the road west of Whitehead, good Yin Road south of the south for the vacant two-story building (the framework of the structure, shallow foundation).     0.00 of the project vis-à-vis the Yellow Sea Elevation 5.7m, the project site of the Yellow Sea floor elevation on average 4.40m. The description of this part of the structural design of the project, using some hand-count some of the rationale for the use of software and Venus are calculated. This combined with the calculation in favor of more access to knowledge and learning.     Deeper the depth of the excavation works were 5.75m, 5.95m, 7.75m, 8.15m. Excavation area to silty clay soil mainly in the pit at the end of silty clay and silt at the junction, inferior nature of the works.     After comparison and analysis of pile retaining system used to support the program increases. The main support the use of bored piles in order to cement mixing pile retaining structures composed of water, at the same time to reduce the lateral displacement of the deformation, and enhance the stability of pit slopes, in the foundation set up with support. Widely used in the program, but also very successful.
Key words: foundation bored piles of cement mixing pile enclosure