本文選題：土拱 + MIDAS/GTS　； 參考：《長安大學》2014年碩士論文

【摘要】：隨著近年來我國經(jīng)濟的高速發(fā)展，特別是實施西部大開發(fā)戰(zhàn)略以來，很多工程項目迅速投入建設，，并且，隨著城市建設用地的減少，越來越多的工程建設項目將遷往山區(qū)這已是必然趨勢。而在這些工程項目的建設中不可避免的會遇到很多邊坡加固問題�？够瑯蹲鳛橐环N高效且較經(jīng)濟的抗滑手段，已被很多學者和專家認可并廣泛應用于實際工程中�？够瑯稑锻林g存在土拱效應已被廣泛認知，但是在很多抗滑樁的設計中依然存在過于保守的問題，這就造成了嚴重浪費。另外針對地震荷載作用對抗滑樁土拱效應的影響開展的課題研究還相對較少。而我國是一個地震多發(fā)國，每次發(fā)生地震都對既有的工程造成一定的危害，甚至直接對工程項目造成不可修復的破壞。因此，本文在這樣的背景下，以實際工程為依托建立數(shù)值模型，分成靜力和地震荷載作用下的動力分析模型通過改變下滑推力、抗滑樁樁間距和樁截面寬度來對比分析抗滑樁土拱效應的不同，本文具體工作如下： （1）通過MIDAS/GTS數(shù)值軟件建立靜力數(shù)值模型，改變下滑推力、抗滑樁樁間距和樁截面寬度對比分析抗滑樁土拱效應的影響，得出靜力作用下在不同條件下對抗滑樁土拱效應的影響規(guī)律的結論，并與前人研究成果對比。 （2）在靜力數(shù)值模型的基礎上導入一組地震波，形成地震荷載作用下的動力數(shù)值模型。分別建立在不同下滑推力、樁間距和樁截面寬度下的動力數(shù)值模型，分析不同條件下抗滑樁土拱效應的差異并與靜力荷載作用下得出的結果對比，總結在地震荷載作用下抗滑樁在不同下滑推力、不同樁間距、不同樁截面寬度下土拱效應的分布規(guī)律。并為以后抗滑樁的抗震設計提供一定的參考。
[Abstract]:With the rapid development of China's economy in recent years, especially since the implementation of the strategy of developing the western region, many engineering projects have been rapidly put into construction, and with the decrease of urban construction land, It is an inevitable trend that more and more engineering projects will be moved to mountainous areas. In the construction of these projects, there will inevitably be many slope reinforcement problems. As an efficient and economical anti-slide method, anti-slide pile has been recognized by many scholars and experts and widely used in practical engineering. The existence of soil arch effect between piles and soils has been widely recognized, but there are still too conservative problems in the design of many anti-slide piles, which has caused serious waste. In addition, the research on the effect of earthquake load on sliding pile and soil arch is relatively few. However, China is an earthquake-prone country. Every earthquake causes certain harm to the existing projects, and even directly causes irreparable damage to the engineering projects. Therefore, in this context, based on the actual engineering, a numerical model is established, which is divided into static and seismic dynamic analysis model by changing the sliding thrust. The difference of soil arch effect between anti-slide pile and pile cross-section is compared and analyzed. The specific work of this paper is as follows: 1) the static numerical model is established by MIDAS/GTS software, and the influence of soil arch effect of anti-slide pile is analyzed by changing the sliding thrust, comparing the pile spacing and the cross-section width of the anti-slide pile. The conclusion is drawn that the influence law of soil arch effect against sliding pile under different conditions under static action, and compared with previous research results. 2) based on the static numerical model, a set of seismic waves are introduced to form a dynamic numerical model under seismic load. The dynamic numerical models under different sliding thrust, pile spacing and pile cross-section width are established, and the difference of soil arch effect of anti-slide pile under different conditions is analyzed and compared with the results obtained under static load. The distribution law of soil arch effect of anti-slide pile under different sliding thrust, different pile spacing and different pile cross-section width is summarized. It also provides some reference for seismic design of anti-slide pile in the future.
【學位授予單位】：長安大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TU473.1

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本文編號：1977398