【摘要】：西南山區(qū)中建設(shè)機(jī)場工程，地質(zhì)條件比較復(fù)雜，而且需要大量的挖填方工程，填方體高度較高，因此造成工后沉降和差異沉降難以控制，為工程建設(shè)帶來極大難度。 本文以昆明新機(jī)場建設(shè)項目為背景，規(guī)劃建設(shè)兩條跑道及兩條滑行道，建成后能夠滿足F類飛機(jī)機(jī)型的使用。新建的跑道中東跑道總長四千米、寬六十米，西跑道總長四千米、寬四十五米，航站樓面積約五十多萬平方米。西跑道南端標(biāo)高2100.63m，中部標(biāo)高2105.19m，北端標(biāo)高2095.35m。而飛行區(qū)地面標(biāo)高一般在2070～2100米，最高為大山2193米，最低點2060米，，最大高差133米。按表面設(shè)計標(biāo)高，場址總挖方量9552.5萬m3，總填方量10048.9萬m3，填挖方量巨大。 從理論計算和監(jiān)測值分析兩方面著手，對昆明新機(jī)場高填方地基沉降量進(jìn)行預(yù)測研究。其中理論計算法主要采用分層總和法、參數(shù)反演法和有限元法進(jìn)行計算，通過現(xiàn)場監(jiān)測數(shù)據(jù)的分析反演計算相關(guān)理論所需的參數(shù)，計算昆明新機(jī)場高填方跑道和滑行道的填方體總沉降量。運(yùn)用有限元的方法計算跑道和滑行道剖面的總沉降量曲線，預(yù)測可能產(chǎn)生沉降較大的位置。 對大量沉降監(jiān)測數(shù)據(jù)進(jìn)行分析整理，監(jiān)測歷時兩年之久（約30多個月），沉降監(jiān)測區(qū)域從T1至T10共10個標(biāo)段，布置監(jiān)測點約228個位置，并且分原地基監(jiān)測、分層沉降監(jiān)測和地表沉降監(jiān)測。這些沉降監(jiān)測資料具有信息量大、監(jiān)測頻率高、數(shù)據(jù)繁多、監(jiān)測區(qū)域大、影響面積廣的特點，整理分析這些大量沉降監(jiān)測數(shù)據(jù)來了解高填方地基的沉降規(guī)律，掌握不同時期、不同區(qū)段、不同填筑材料的沉降速率，研究其沉降速率和沉降量的影響規(guī)律，從直觀上把握高填方沉降的規(guī)律性和填方體現(xiàn)行階段的穩(wěn)定性，以及可能存在不均勻沉降和差異沉降量大的區(qū)域，為沉降預(yù)測做好充分的資料分析準(zhǔn)備，及時提出設(shè)計方案和治理措施。 查閱文獻(xiàn)資料，分析有關(guān)沉降速率、工后沉降量、差異沉降的控制指標(biāo)，確定昆明新機(jī)場高填方地基沉降穩(wěn)定的控制指標(biāo)，以不低于相關(guān)行業(yè)的標(biāo)準(zhǔn)，給出參考建議值。
[Abstract]:It is difficult to control the settlement and differential settlement after construction of airport project in southwest mountainous area because of its complicated geological conditions and a large number of excavation and fill projects, and the height of the fill body is relatively high, so it is difficult to control the settlement and differential settlement after construction. Under the background of Kunming new airport construction project, two runways and two taxiways are planned and constructed, which can satisfy the use of F-type aircraft. The new runway has a total length of 4,000 meters and a width of 60 meters, while the west runway has a total length of four kilometers and a width of 45 meters. The terminal building covers an area of more than half a million square meters. The south level of the west runway is 2100.63m, the central level is 2105.19m, and the north level is 2095.35m. The ground elevation of the flying area is 2070 m, the highest is 2193 m, the lowest is 2060 m, and the maximum height difference is 133m. According to the surface design elevation, the total site excavation is ninety five million five hundred and twenty five thousand m3, the total fill is one hundred million four hundred and eighty eight thousand nine hundred and ninety nine m3, and the mass is huge. From two aspects of theoretical calculation and monitoring value analysis, the settlement of high fill foundation of Kunming New Airport is predicted. The theoretical calculation method mainly uses the hierarchical summation method, the parameter inversion method and the finite element method to calculate the parameters required by the relevant theory through the analysis of the field monitoring data. The total settlement of the high fill runway and taxiway of Kunming New Airport is calculated. The finite element method is used to calculate the total settlement curve of runway and taxiway section and predict the location where the settlement may occur. A large number of settlement monitoring data were analyzed and sorted. The monitoring lasted for two years (about 30 months). The settlement monitoring area consisted of 10 mark sections from T1 to T10, with 228 monitoring points arranged, and the monitoring was divided into original foundation monitoring. Layered settlement monitoring and surface settlement monitoring. These settlement monitoring data have the characteristics of large amount of information, high monitoring frequency, numerous data, large monitoring area and wide influence area, collating and analyzing these large amount of settlement monitoring data to understand the settlement law of high fill foundation, and grasp the different periods. The influence law of settlement rate and settlement amount of different filling materials in different sections is studied, and the regularity of settlement of high fill and the stability of the current stage of fill are grasped intuitively. As well as the areas where there may be non-uniform settlement and large differential settlement, it is necessary to make sufficient data analysis and preparation for settlement prediction, and to put forward the design scheme and control measures in time. The control indexes of settlement rate, post-construction settlement and differential settlement are analyzed, and the control indexes of settlement stability of high fill foundation of Kunming New Airport are determined. The reference and suggestion values are given in order to be no lower than the standards of related industries.
【學(xué)位授予單位】：成都理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TU433

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 劉之葵;劉寶臣;曹平;;巖溶地區(qū)巖土工程技術(shù)現(xiàn)狀評述[J];地下空間與工程學(xué)報;2007年03期

2 汪雙杰;黃曉明;侯曙光;;多年凍土區(qū)路基路面變形及應(yīng)力的數(shù)值分析[J];冰川凍土;2006年02期

3 李世壯;車輛荷載作用下復(fù)合路基的沉降研究[J];長春工程學(xué)院學(xué)報(自然科學(xué)版);2002年02期

4 石世云;多變量灰色模型MGM(1,n)在變形預(yù)測中的應(yīng)用[J];測繪通報;1998年10期

5 欒茂田,漒橖惠三;關(guān)于巖土工程研究中若干基本力學(xué)問題的思考[J];大連理工大學(xué)學(xué)報;1999年02期

6 李志高,劉國明,歐志東;高填路基穩(wěn)定問題的非線性有限元分析[J];福州大學(xué)學(xué)報(自然科學(xué)版);2003年01期

7 陳國榮,姜弘道,高謙,劉大安;高速公路路基性態(tài)反分析及沉降預(yù)報[J];工程地質(zhì)學(xué)報;1998年04期

8 劉漢清,曾國東,應(yīng)榮華;老路拓寬容許工后不均勻沉降指標(biāo)研究[J];公路;2004年03期

9 劉勇健;用人工神經(jīng)網(wǎng)絡(luò)預(yù)測高速公路軟土地基的最終沉降[J];公路交通科技;2000年06期

10 汪浩,黃曉明;軟土地基上高速公路加寬的有限元分析[J];公路交通科技;2004年08期

相關(guān)碩士學(xué)位論文 前3條

1 孫鵬;昆明新建機(jī)場巖溶發(fā)育特征及其穩(wěn)定性研究[D];成都理工大學(xué);2007年

2 陳春霞;昆明新機(jī)場航站區(qū)地基穩(wěn)定性評價[D];成都理工大學(xué);2008年

3 付博;昆明小哨機(jī)場航站樓區(qū)巖溶發(fā)育特征及地基穩(wěn)定性評價[D];成都理工大學(xué);2008年

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