【摘要】：基坑支護工程的設(shè)計,既要考慮到整個支護結(jié)構(gòu)在施工過程中的安全,又要考慮到結(jié)構(gòu)和周圍土體的變形,以保證周圍環(huán)境相鄰建筑物和地下公共設(shè)施等的安全。因此,如何確�；�坑工程的安全可靠、經(jīng)濟合理、實用可行是當(dāng)前現(xiàn)代化城市建設(shè)中一個非常重要和迫切的問題。本課題以西安某深基坑工程為背景,在考慮臨近建筑物的情況進行支護結(jié)構(gòu)設(shè)計,并研究其變形規(guī)律,主要進行了以下方面的研究:1、研究臨近建筑物對基坑圍護結(jié)構(gòu)產(chǎn)生的附加應(yīng)力,探討不同距離、不同基礎(chǔ)埋置深度的建筑物、不同基礎(chǔ)類型對基坑圍護結(jié)構(gòu)的影響。2、總結(jié)深基坑常見的支護形式,支護結(jié)構(gòu)的破壞形式,基坑變形規(guī)律、變形機理以及變形的影響因素和控制措施。3、根據(jù)實際工程背景,考慮臨近建筑物對圍護結(jié)構(gòu)施加的附加應(yīng)力,計算出各個工況下的內(nèi)力、支點力、彎矩,進行深基坑支護的設(shè)計。4、運用數(shù)值模擬軟件,模擬工程開挖,驗證支護設(shè)計的安全性和合理性;并針對不同臨近建筑物的距離、基礎(chǔ)埋深進行模擬,研究其對深基坑開挖變形的影響。5、結(jié)合數(shù)值模擬結(jié)果和工程實測數(shù)據(jù),進一步驗證支護設(shè)計。同時分析該地區(qū)深基坑開挖的變形規(guī)律,為該地區(qū)類似工程提供一定的設(shè)計依據(jù)。
[Abstract]:In order to ensure the safety of adjacent buildings and underground public facilities, the design of foundation pit supporting engineering should not only consider the safety of the whole supporting structure during the construction process, but also consider the deformation of the structure and surrounding soil mass. Therefore, how to ensure the safety, reliability, economy, practicality and feasibility of foundation pit engineering is a very important and urgent problem in the construction of modern cities. Based on a deep foundation pit project in Xi'an, the support structure is designed in consideration of adjacent buildings, and its deformation law is studied. This paper mainly studies the following aspects: 1, studies the additional stress generated by adjacent buildings on the foundation pit enclosure structure, and discusses the buildings with different distances and different foundation depths. The influence of different foundation types on the retaining structure of deep foundation pit is summarized. The common supporting forms of deep foundation pit, the failure form of supporting structure, the deformation law of foundation pit, the deformation mechanism, the influencing factors and control measures of foundation pit are summarized. According to the actual engineering background, Considering the additional stress applied by the adjacent building to the retaining structure, the internal force, the fulcrum force, the bending moment under various working conditions are calculated, and the design of deep foundation pit support is carried out. The numerical simulation software is used to simulate the excavation of the engineering. To verify the safety and rationality of the support design, and to simulate the depth of the foundation for different adjacent buildings, and to study its influence on the deformation of deep foundation pit excavation. 5. Combined with the numerical simulation results and the engineering measured data, Further verify the support design. At the same time, the deformation law of deep foundation pit excavation in this area is analyzed, which provides certain design basis for similar projects in this area.
【學(xué)位授予單位】：西安科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TU753

【參考文獻】

相關(guān)期刊論文 前10條

1 張曠成;李繼民;;杭州地鐵湘湖站“08.11.15”基坑坍塌事故分析[J];巖土工程學(xué)報;2010年S1期

2 胡時猛;曾鼎華;王閃閃;;成都某深基坑工程支護方案優(yōu)化設(shè)計[J];巖土工程界;2007年01期

3 梁曉丹;宋宏偉;劉剛;;地下工程對地面既有高層建筑影響的數(shù)值分析[J];西安科技大學(xué)學(xué)報;2006年01期

4 郭偉,蘇仲杰;水平變形對地表建筑物的動態(tài)損壞過程分析[J];煤礦開采;2005年06期

5 金小榮,俞建霖,祝哨晨,龔曉南;基坑降水引起周圍土體沉降性狀分析[J];巖土力學(xué);2005年10期

6 俞洪良,陸杰峰,李守德;深基坑工程滲流場特性分析[J];浙江大學(xué)學(xué)報(理學(xué)版);2002年05期

7 俞建霖,龔曉南;基坑工程變形性狀研究[J];土木工程學(xué)報;2002年04期

8 黃春娥,龔曉南,顧曉魯;考慮滲流的基坑邊坡穩(wěn)定分析[J];土木工程學(xué)報;2001年04期

9 平揚,白世偉,徐燕萍;深基坑工程滲流-應(yīng)力耦合分析數(shù)值模擬研究[J];巖土力學(xué);2001年01期

10 劉興旺,施祖元,益德清,吳世明;軟土地區(qū)基坑開挖變形性狀研究[J];巖土工程學(xué)報;1999年04期

相關(guān)碩士學(xué)位論文 前3條

1 華正陽;深基坑開挖對近距離建筑的安全影響研究[D];中南大學(xué);2014年

2 趙志俊;基坑開挖對鄰近建筑物變形影響數(shù)值分析[D];合肥工業(yè)大學(xué);2010年

3 蔡智云;深基坑地下連續(xù)墻減小鄰近建筑沉降的作用研究[D];西安科技大學(xué);2005年

，

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