本文選題：深基坑　切入點(diǎn)：支護(hù)設(shè)計(jì)　出處：《河北工程大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：深基坑工程多位于人口密集的市區(qū),其周邊環(huán)境比較復(fù)雜。基坑支護(hù)設(shè)計(jì),不僅要求其穩(wěn)定性要滿足規(guī)范,其墻體變形、坑底隆起及周圍土體的變形也要滿足設(shè)計(jì)要求。深基坑的開挖有著較強(qiáng)的環(huán)境效應(yīng),對周圍道路、管線、建筑物的影響不能小覷。因此,對基坑的數(shù)值模擬分析和變形規(guī)律的研究十分重要。本文在理正深基坑7.0軟件進(jìn)行計(jì)算的基礎(chǔ)上,應(yīng)用GEO5巖土工程有限元分析軟件對北京某基坑的開挖支護(hù)過程進(jìn)行模擬分析,然后與現(xiàn)場監(jiān)測數(shù)據(jù)進(jìn)行對比,來驗(yàn)證支護(hù)方案的可靠性與所建數(shù)值模型的合理性。本論文的主要研究過程如下:(1)以北京某深基坑工程為研究對象,應(yīng)用理正深基坑7.0軟件對該基坑的北側(cè)進(jìn)行支護(hù)設(shè)計(jì),并驗(yàn)算其穩(wěn)定性,符合規(guī)范要求;(2)應(yīng)用GEO5巖土工程有限元分析軟件對該基坑北側(cè)開挖支護(hù)過程進(jìn)行數(shù)值模擬,同時(shí)分析了基坑的變形規(guī)律;(3)將理正深基坑軟件計(jì)算結(jié)果、有限元分析結(jié)果與現(xiàn)場監(jiān)測得到的樁頂水平位移、樁體深層水平位移、地表沉降、基坑坑底隆起量、樁彎矩和樁剪力進(jìn)行分析比較,驗(yàn)證了支護(hù)方案的可靠性與所建模型合理性;(4)通過改變排樁間距、錨索的位置和水平間距,分析了支護(hù)結(jié)構(gòu)的布置對基坑變形的影響規(guī)律。通過對北京某深基坑的支護(hù)設(shè)計(jì)和數(shù)值模擬分析,可以積累基坑支護(hù)設(shè)計(jì)的實(shí)踐經(jīng)驗(yàn),同時(shí)對類似條件的深基坑工程也有借鑒意義。
[Abstract]:Deep foundation pit projects are mostly located in densely populated urban areas, and the surrounding environment is relatively complex. The design of foundation pit support not only requires its stability to meet the specifications, but also the deformation of the wall. The excavation of deep foundation pit has a strong environmental effect, and the influence on the surrounding roads, pipelines and buildings should not be underestimated. It is very important to study the numerical simulation analysis and deformation law of foundation pit. Based on the calculation of Lizheng deep foundation pit 7.0 software, this paper uses GEO5 geotechnical engineering finite element analysis software to simulate and analyze the excavation and support process of a foundation pit in Beijing. Then compared with the field monitoring data to verify the reliability of the support scheme and the rationality of the numerical model. The main research process of this paper is as follows: 1) A deep foundation pit project in Beijing is taken as the research object. The support design of the north side of the foundation pit is carried out by using the software of Lizheng Deep Foundation Pit 7.0, and the stability of the foundation pit is checked and calculated. The stability of the foundation pit is verified and the stability of the foundation pit is verified. At the same time, the deformation law of foundation pit is analyzed. The results of software calculation, finite element analysis and field monitoring of pile top displacement, deep horizontal displacement of pile body, ground subsidence, uplift amount of foundation pit bottom are analyzed. Through the analysis and comparison of pile bending moment and pile shear force, it is proved that the reliability of the supporting scheme and the rationality of the established model are verified by changing the spacing of piles, the position and horizontal spacing of anchor cables. The influence of the layout of supporting structure on the deformation of foundation pit is analyzed. The practical experience of foundation pit support design can be accumulated by analyzing the support design and numerical simulation of a deep foundation pit in Beijing. At the same time, it can also be used for reference for deep foundation pit engineering with similar conditions.
【學(xué)位授予單位】：河北工程大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TU753

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 蔡斌;;淺析深基坑支護(hù)方案優(yōu)選及應(yīng)用[J];江西建材;2017年08期

2 董慧超;馮科明;;基于既有城市軌道交通防護(hù)的某基坑支護(hù)設(shè)計(jì)[J];巖土工程技術(shù);2016年05期

3 沈亮;楊大龍;;基于鉆孔灌注樁設(shè)計(jì)技術(shù)的深基坑支護(hù)結(jié)構(gòu)分析[J];科技創(chuàng)新與應(yīng)用;2013年32期

4 趙曉峰;;黃土基坑圍護(hù)結(jié)構(gòu)上的土壓力[J];勘察科學(xué)技術(shù);2012年04期

5 趙正玲;;樁錨式支護(hù)結(jié)構(gòu)在基坑工程中的應(yīng)用[J];山東水利;2012年Z1期

6 朱桂春;劉興鑫;韓武娟;;深基坑樁錨支護(hù)體系的受力變形研究及優(yōu)化設(shè)計(jì)[J];安全與環(huán)境工程;2012年01期

7 何效友;王建華;;淺談城市地下空間基坑的監(jiān)測[J];科技風(fēng);2011年13期

8 王峰;;淺談某工程深基坑支護(hù)方式的選擇及施工[J];山西建筑;2010年03期

9 張浩;;土釘墻施工的質(zhì)量控制[J];中國公路;2009年S1期

10 麻鳳海;鄭艷;楊帆;;Research of deformation prediction method of soft soil deep foundation pit[J];Journal of Coal Science & Engineering(China);2008年04期

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本文編號(hào)：1643009