本文選題：塔柱式地鐵車站 + 圍巖穩(wěn)定性��； 參考：《西南交通大學》2015年碩士論文

【摘要】：在城市復雜的交通環(huán)境下,采用明(蓋)挖法修建地鐵車站施工困難時,淺埋暗挖法因其施工安全性較高且對環(huán)境影響小而得到廣泛應用。青島地鐵敦化路站受站間距所限,埋深較大,而地質(zhì)條件又比較好,位于微風化花崗巖中,為了突出青島特色,敦化路站擬建為暗挖塔柱式車站。塔柱式車站在我國應用較少,相應的理論研究不足,施工經(jīng)驗欠缺,況且塔柱式車站開挖洞室較多,施工過程力學轉(zhuǎn)換頻繁,因此研究敦化路站下的圍巖穩(wěn)定性及塔柱式車站的施工力學行為較為必要。本文以青島地鐵3號線敦化路車站為依托,以新建塔柱式地鐵車站為研究對象,開展了塔柱式地鐵車站基于強度折減法的圍巖穩(wěn)定性研究、二維和三維的車站主體部分開挖數(shù)值模擬以及聯(lián)絡通道開挖的三維數(shù)值模擬,并依托敦化路站現(xiàn)場第三方監(jiān)測對施工過程進行現(xiàn)場監(jiān)控量測,結(jié)合數(shù)值模擬對監(jiān)測數(shù)據(jù)進行對比分析,主要研究工作如下：(1)用數(shù)值模擬下的強度折減法對青島地鐵敦化路站圍巖穩(wěn)定性進行了研究,揭示了強度折減下的圍巖劣化規(guī)律,并得出了相應的安全系數(shù)。(2)用數(shù)值模擬對敦化路站主體結(jié)構(gòu)不同施工方案進行分析,揭示了不同施工方案下的敦化路站主體結(jié)構(gòu)施工力學行為及地層變形特性。(3)用數(shù)值模擬對敦化路站聯(lián)絡通道的施工進行分析,揭示了聯(lián)絡通道開挖對主體結(jié)構(gòu)的應力及位移影響規(guī)律。(4)現(xiàn)場監(jiān)測敦化路站施工過程,結(jié)合數(shù)值模擬對監(jiān)測數(shù)據(jù)進行對比分析,監(jiān)測數(shù)據(jù)分析結(jié)果與數(shù)值模擬結(jié)果基本一致。
[Abstract]:In the complex urban traffic environment, when it is difficult to construct subway station by using open (cover) excavation method, shallow underground excavation method is widely used because of its high construction safety and little environmental impact. The Dunhua Road Station of Qingdao Subway is limited by the distance between the stations, buried deeply, and the geological conditions are better. In order to highlight the characteristics of Qingdao, Dunhua Road Station is to be built as a stealthy tower column station. The tower station has less application in our country, the corresponding theoretical research is insufficient, and the construction experience is short. Besides, there are more excavated caverns in the tower station, and the mechanical transformation in the construction process is frequent. Therefore, it is necessary to study the stability of surrounding rock under Dunhua Road Station and the construction mechanics behavior of tower station. Based on the Dunhua Road Station of Qingdao Metro Line 3 and the newly built tower column subway station as the research object, the stability of surrounding rock of the tower column subway station based on the strength reduction method is studied in this paper. Two and three dimensional numerical simulation of the main part of the station excavation and three dimensional numerical simulation of the excavation of the contact channel, and based on the third party monitoring of the Dunhua Road Station, the site monitoring and measurement of the construction process is carried out. Comparing and analyzing the monitoring data with numerical simulation, the main research work is as follows: (1) the stability of surrounding rock of Dunhua Road Station of Qingdao Metro is studied by using the strength reduction method under numerical simulation, and the deterioration law of surrounding rock under strength reduction is revealed. The corresponding safety factor is obtained. Different construction schemes of the main structure of Dunhua Road Station are analyzed by numerical simulation. This paper reveals the construction mechanics behavior and formation deformation characteristics of the main structure of Dunhua Road Station under different construction plans. The numerical simulation is used to analyze the construction of the connecting passage of Dunhua Road Station. It is revealed that the stress and displacement of the main structure influenced by the excavation of the connecting passage. (4) the construction process of Dunhua Road Station is monitored on the spot, and the monitoring data are compared and analyzed with numerical simulation. The results of monitoring data analysis are basically consistent with those of numerical simulation.
【學位授予單位】：西南交通大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：U451.2;U231.3

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