【正文】 ................................................. 11 七、支護樁設計計算 ......................................................................................................... 13 八、內(nèi)支撐梁的配筋計算 ................................................................................................. 14 （一）荷載統(tǒng)計 ............................................................................................................. 14 （二）受壓計算 ............................................................................................................. 15 （三）受剪計算 ............................................................................................................. 16 （四）鋼筋配置 ............................................................................................................. 17 九、混凝土冠梁配筋計算 ................................................................................................. 17 （一）計算模型 ............................................................................................................. 17 （二）內(nèi)力計算 ............................................................................................................. 18 （三）配筋計算 ............................................................................................................. 18 （四）鋼筋配置 ............................................................................................................. 19 十、格構柱強度及穩(wěn)定性計算 ......................................................................................... 19 （一 ）截面特性 ............................................................................................................. 19 （二）強度計算 ............................................................................................................. 20 （三）穩(wěn)定性驗算 ......................................................................................................... 20 十一、變形計算 ................................................................................................................. 21 （一）基坑底的變形計算 ............................................................................................. 21 （二）基底以上變形計算 ............................................................................................. 22 （三）基坑底以下位移、內(nèi)力計算 ............................................................................. 25 十二、抗隆起驗算 ............................................................................................................. 30 十三、地下水控制設計 ..................................................................................................... 30 （一）上層滯水控制設計 ............................................................................................. 30 （二）基坑排水 ............................................................................................................. 31 十四、基坑支護施工要求及土方開挖要求 ..................................................................... 31 （一）支護樁施工要求 ................................................................................................. 31 （二）土方開挖施工要求 ............................................................................................. 31 （三）掛網(wǎng)噴射砼支護施工要求 ................................................................................. 32 （四）路面硬化及排水施工要求 ................................................................................. 32 （五）施工注意事項 ..................................................................................................... 32 十五、監(jiān)測要點及應急搶險措施 ..................................................................................... 32 （一）監(jiān)測內(nèi)容 ............................................................................................................. 32 （二）監(jiān)測點布置 ......................................................................................................... 32 （三）監(jiān)測要求 ............................................................................................................. 32 十六、結論 ......................................................................................................................... 33 致謝 ..................................................................................................................................... 35 參考文獻 ............................................................................................................................. 36 1 摘要 隨著我國經(jīng)濟的 快速發(fā)展以及城市現(xiàn)代化建設的要求不斷提高，地下空間的開發(fā)和利用已顯得尤為重要。大型基坑工程是高層和城市地下工程的重要組成部分，深基坑設計和施工技術成為熱點問題。 關鍵詞： 基坑工程；支護形式；設計計算 Abstract With the increasing demands of china’s rapid economic development and urban modernization, development and utilization of underground space has bee particularly important. The largescale foundation pit engineering is an important part of highrise buildings and urban underground engineering, deep foundation pit engineering design and construction technology has bee a hot issue. In this paper, I take the example of the deep foundation pit project of the two senior of jinyinhu 1, bined with projectspecific environmental and construction requirements, and choose the retaining structure by paring with different retaining structure of the deep foundation and with the demonstration of selection, in order to determine the support form, to do the slope stability analysis and the design calculation, and then to provide guidance for similar deep foundation designer and construction. Keywords: Foundation pit engineering。 Design calculation 2 引言 近年來隨著我國的經(jīng)濟和城市建設的迅速發(fā)展，地下工程也越來越多，開發(fā)和利用地下空間的要求日益重要，城市軌道、地下車庫、地下商場、地下人防工程以 及高層建筑的多層地下室日益增?；庸こ淌且粋€綜合性很強的系統(tǒng)工程，其支護方案的優(yōu)劣直接影響工程進度、質量和成本，在整個基坑施工工程中占有重要的地位。 隨著深基坑工程的發(fā)展，深基坑支護結構工程的設計和施工都得到了較好的發(fā)展。未來，深基坑支護結構在發(fā)展中將呈現(xiàn)下列發(fā)展趨勢： 1. 深基坑支護結構方案優(yōu)選 ； 2. 更加重視變形控制設計； 技術； 4. 更加注重工程實踐。 3 一、工程概況 （一）工程名稱 ： 金銀湖 1 號二期高層項目深基坑工程設計 （二）工程概況 ：武漢二十一 世紀置業(yè)發(fā)展有限公司擬在其位于金銀湖 1 號地塊內(nèi)興建教學配套設施項目，該項目由中信建筑設計研究總院有限公司負責設計。本工程項目為 2 棟共 33 層高層，全