【摘要】：為了確保施工過程基坑周邊的安全達(dá)標(biāo),本文針對福治紫城實(shí)際基坑施工工程情況,依據(jù)勘察報(bào)告,結(jié)合相應(yīng)規(guī)范,先應(yīng)用Midas/GTS軟件模擬無支護(hù)狀態(tài)下基坑開挖至坑底時(shí),其周邊變形情況,得到開挖過程基坑的各個(gè)部位的最大變形。變形較明顯部位要加強(qiáng)支護(hù)(樁錨、排樁、地下連續(xù)墻)。變形相對不明顯部位,建議采用復(fù)合土釘墻支護(hù)。運(yùn)用理正軟件進(jìn)行設(shè)計(jì)計(jì)算,得到上述三種支護(hù)方案均滿足要求。再用Midas/GTS有限元軟件作為計(jì)算工具對上述3個(gè)不同基坑支護(hù)模型(樁錨+復(fù)合土釘墻、排樁+復(fù)合土釘墻、地下連續(xù)墻+復(fù)合土釘墻)分別進(jìn)行穩(wěn)定性分析,研究了交通荷載及地下水對其影響。由模擬結(jié)果可得如下結(jié)論:(1)基坑無支護(hù)狀態(tài)下開挖至坑底,其距建筑物較近處沉降較為明顯;(2)應(yīng)用理正設(shè)計(jì)軟件對該工程的三種基坑支護(hù)方案進(jìn)行設(shè)計(jì)計(jì)算,得到各個(gè)方案的基坑位移及地面沉降值;(3)針對基坑分別用Midas/GTS進(jìn)行建模,分析各個(gè)支護(hù)狀態(tài)下基坑最大變形、地下水滲流作用下土壓力、周邊荷載及建筑物對基坑的影響等;(4)經(jīng)查看得知,三種支護(hù)方案所得的基坑最大變形分別為38.7159mm、38.9076mm、32.5502mm。并且,周邊交通荷載對建筑物影響較小,可以忽略不計(jì)。經(jīng)過分析比較基坑的邊坡沉降、經(jīng)濟(jì)性,得到樁錨支護(hù)為最優(yōu)的支護(hù)方案。本方案可為實(shí)際工程的設(shè)計(jì)與施工有一定的參考性。
[Abstract]:In order to ensure the safety of foundation pit surrounding the construction process, according to the actual construction engineering situation of Fuzhi Zicheng foundation pit, according to the survey report and the corresponding specification, the Midas/GTS software is first used to simulate the excavation to the bottom of the pit under the condition of no support. The maximum deformation of each part of the foundation pit in the excavation process is obtained under the condition of the deformation around the foundation pit. The more obvious deformation should be strengthened support (pile anchor, row piles, underground continuous wall). It is suggested that the composite soil nailing wall should be used to support the deformation. The design and calculation are carried out by using the software of straightening and straightening, and it is found that the above three supporting schemes meet the requirements. Then, the stability analysis of three different foundation pit supporting models (pile-anchor composite soil-nail wall, row-pile composite soil-nail wall, underground continuous wall composite soil-nail wall) was carried out by using Midas/GTS finite element software as a calculation tool. The influence of traffic load and groundwater on it is studied. From the simulation results, the following conclusions can be drawn: (1) when the foundation pit is excavated to the bottom of the pit under the condition of no support, the settlement is more obvious near the building; (2) three kinds of foundation pit supporting schemes of this project are designed and calculated by using the software of straightening design, and the foundation pit displacements and ground settlement values of each scheme are obtained. (3) Midas/GTS is used to model the foundation pit, and the maximum deformation of the foundation pit under each supporting condition, the earth pressure under the action of groundwater seepage, the surrounding load and the influence of the building on the foundation pit are analyzed. (4) the maximum deformation of foundation pit is 38.7159mm, 38.9076mm, 32.5502mm respectively. Moreover, the influence of peripheral traffic load on the building is small and can be ignored. Through the analysis and comparison of slope settlement and economy of foundation pit, the optimal supporting scheme of pile-anchor support is obtained. This scheme can be used as a reference for the design and construction of practical engineering.
【學(xué)位授予單位】：河北工程大學(xué)
【學(xué)位級(jí)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 宋建學(xué);龐宏飛;;土釘墻-樁錨聯(lián)合支護(hù)結(jié)構(gòu)設(shè)計(jì)參數(shù)分析[J];鄭州大學(xué)學(xué)報(bào)(工學(xué)版);2014年06期

2 劉澄赤;楊敏;劉斌;古海東;;疏排樁 土釘墻組合支護(hù)基坑整體穩(wěn)定性分析[J];巖土工程學(xué)報(bào);2014年S2期

3 帥紅巖;陳少平;曾執(zhí);;深基坑支護(hù)結(jié)構(gòu)變形特征的數(shù)值模擬分析[J];巖土工程學(xué)報(bào);2014年S2期

4 陳晨;趙文;龐宇斌;;TRD工法水泥土墻現(xiàn)場取芯的三軸滲透試驗(yàn)[J];沈陽工業(yè)大學(xué)學(xué)報(bào);2015年01期

5 楊金華;夏元友;劉毅;裴堯堯;;狹長土巖組合基坑支護(hù)結(jié)構(gòu)變形與受力變化規(guī)律的現(xiàn)場測試[J];武漢理工大學(xué)學(xué)報(bào);2012年12期

6 劉亞宇;;常規(guī)深基坑支護(hù)技術(shù)綜述[J];建筑技術(shù)開發(fā);2012年10期

7 王曉楠;王建良;;深基坑支護(hù)結(jié)構(gòu)內(nèi)力與變形研究進(jìn)展[J];科學(xué)技術(shù)與工程;2012年21期

8 田嬌;王曉艷;蔡永昌;;無錫地鐵深基坑支護(hù)結(jié)構(gòu)受力變形特性研究[J];地下空間與工程學(xué)報(bào);2011年06期

9 楊敏;劉斌;;土釘抗拔承載力經(jīng)驗(yàn)驗(yàn)算方法[J];建筑科學(xué)與工程學(xué)報(bào);2010年02期

10 李慧穎;;桂林南洲橋污水泵房深基坑設(shè)計(jì)方案及施工[J];中國市政工程;2010年01期

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