xx大廈基坑支護設(shè)計

摘 要
    邯鄲市滏河大廈位于邯鄲市邯鄲市區(qū)南部，光明大街西側(cè)原光明飲料廠內(nèi)，地上29層，建筑高度87.0m，結(jié)構(gòu)形式擬采用框架結(jié)構(gòu)，地基基礎(chǔ)設(shè)計等級均為乙級?；由疃?m。
    通過對滏河大廈場地的工程地質(zhì)條件分析，地下水位較淺且緊鄰滏陽河，因此采用擋水措施。由于對基坑深度問題和周圍環(huán)境的考慮，因此可試著考慮采用較簡單的經(jīng)濟的基坑支護措施，以保證基礎(chǔ)正常施工和主體地下結(jié)構(gòu)的安全及周圍建筑物不受損害，并且達到技術(shù)要求。
    在本次基坑支護設(shè)計過程中，考慮到施工安全、質(zhì)量、經(jīng)濟等原因，根據(jù)場地的土層條件及邯鄲市類似基坑工程的經(jīng)驗，為保證基坑質(zhì)量的同時盡量節(jié)省投資，對基坑壁先進行了等級劃分，對不同等級的基坑壁擬采用不同的支護方案。先后制定了三種方案：1.單支點支護；2.土釘墻支護；3.水泥土擋墻支護。對于水泥土擋墻方案，讓其兼做防水帷幕，可起到擋水的作用。
　關(guān)鍵詞：水泥土擋墻  單支點排樁  基坑支護  經(jīng)濟
Abstract
    Handan furong raw material the handan city building is located at the river south west street, bright light, the ground in the SAN 87.0 29 layer, building height is used structure forms m, frame structure, foundation design level are serie b. Excavation depth 8m.
    Through field of furong raw material of the engineering geological river building are analyzed, and close to a shallow underground water level, so the method YangHe cauldron retaining water measures. Because of foundation pit depth and the surrounding environment consideration, so you can try to consider using a relatively simple economic foundation pit supporting measures, to ensure the basic normal construction and main body of underground structures safety and surrounding buildings is not compromised, and achieve technical requirements.
     In this Ji the pit protect the design the process, in consideration of construction safety, quality, economy etc. reason, according to condition and the Han Dan City of the soil layer of the place similar the Ji pit experience of the engineering, is assurance Ji pit quality of in the meantime as far as possible economical investment, to Ji pit wall forerunner line grade divide the line, to dissimilarity the Ji pit wall of the grade draw up adoption dissimilarity of protect a project.Successively establishment three kinds of project:1.The list fulcrum protect;2.The soil nail a wall to protect;3.The cement soil block a wall to protect.Block a wall project to the cement soil, let it and do a watertightness purdah, can there is function of block water.
  Keyword：The cement soil block the wall   list fulcrum row a stake   The Ji pit protect economy

摘 要 1
0 緒論 3
1 工程概況 3
1.1 工程地質(zhì)勘察資料 3
1.2 基坑工程的主要內(nèi)容 4
1.3 設(shè)計方案比較及使用方案 8
2 沉降、位移觀測布置及方法 8
3 單支點方案 11
3.1 求支點力 11
3.2 嵌固深度計算 12
3.3 求最大彎矩 14
(2) 配筋計算 14
3.4 錨桿設(shè)計 15
3.5 錨桿防銹設(shè)計 23
4 北側(cè)基坑支護計算 24
4.1 土壓力 24
4.2 穩(wěn)定性驗算 27
4.3 應(yīng)力計算 28
4.4 基底地基承載力驗算 28
4.5 格倉壓力驗算 29
4.6 擋墻水平位移計算 29
5 土釘墻設(shè)計計算 29
5.1 土釘參數(shù)確定 29
5.2 整體穩(wěn)定性驗算 31
5.3 抗滑移穩(wěn)定性驗算 32
5.4 抗傾覆穩(wěn)定性驗算 33
6 工程應(yīng)急預(yù)案 33
6.1 預(yù)案處理權(quán)限 33
6.2 潛在事故危險性分析 33
6.3 應(yīng)急救援的職責(zé)與分工 34
6.4 緊急處理措施 34
7 各方案經(jīng)濟指標(biāo)計 35
參考文獻 38