礦震對基坑鄰近建筑物影響數(shù)值模擬分析
發(fā)布時間：2019-01-11 15:11
【摘要】：隨著我國經(jīng)濟、社會的不斷發(fā)展,城市面積不斷擴大,土地資源和自然資源越來越緊張,人們對能源的需求也在不斷增長。于是,越來越多的高層建筑拔地而起,能源消耗的數(shù)字被不斷刷新。在礦產(chǎn)資源型城市,每天都在進行著城區(qū)老舊建筑物的拆除、周邊建筑物的新建及地下煤礦的開采,而伴隨著采礦作業(yè)所產(chǎn)生的礦震也隨著開采頻率與開采量的增加而愈發(fā)頻繁。高層建筑和地下工程的施工往往需要進行基坑開挖工程,基坑開挖的規(guī)模和深度不斷增加。許多基坑工程位于城市的建筑密集區(qū),緊臨已有建筑物或構筑物的基礎,基坑的開挖與支護不僅關系到基坑本身的安全,也關系到相鄰建筑物的安全。另外,礦山地震對周邊建筑物構成的危害也越來越受到關注。雖然礦震強度不大,震源淺,但分布廣,發(fā)生頻繁,可能造成人員傷亡和財產(chǎn)損失,因此礦震所引發(fā)的次生災害已成為人們較為關注的一大災害。本文以阜新地區(qū)典型工程地質條件下的基坑及建筑結構為例,采用數(shù)值模擬的方法,分析了與基坑相鄰的某框架結構建筑物,在與基坑不同距離的情況下,基坑開挖及礦山地震引起的建筑結構的變形和內力變化規(guī)律。本文在總結前人研究成果的基礎上,對在礦震作用與基坑開挖工程引起的鄰近建筑物的變形和內力變化等進行了總結。將基坑、坑邊土體和相鄰建筑物作為一個整體系統(tǒng),運用有限元軟件ANSYS,分析了礦震作用下基坑開挖過程中相鄰建筑結構的變形規(guī)律,計算分析了框架結構在基坑開挖前后和礦震作用下的內力變化規(guī)律,研究了礦震作用下的基坑開挖工程對鄰近建筑物的影響；找出了礦震作用下基坑開挖工程對鄰近建筑物的影響規(guī)律,為實際工程的設計和施工提供參考,并對今后相關的數(shù)值模擬分析及其研究具有一定的參考價值。
[Abstract]:With the development of our economy and society, the urban area is expanding, the land resources and natural resources are more and more tense, and the demand for energy is also increasing. As a result, more and more high-rise buildings, energy consumption figures are constantly refreshed. In mineral resource-based cities, the demolition of old buildings in urban areas, the construction of surrounding buildings and the mining of underground coal mines are going on every day. With the increase of mining frequency and mining quantity, the ore shock caused by mining is becoming more and more frequent. The excavation of foundation pit is often needed in the construction of high-rise building and underground engineering, and the scale and depth of excavation are increasing. Many foundation pit projects are located in the built-up area of the city, and are close to the foundation of existing buildings or structures. The excavation and support of foundation pit not only relate to the safety of the foundation pit itself, but also to the safety of adjacent buildings. In addition, more and more attention has been paid to the damage caused by mine earthquakes to surrounding buildings. Although the intensity of mine earthquake is small and the source is shallow, it is widely distributed and occurs frequently, which may cause casualties and property losses. Therefore, the secondary disaster caused by mine earthquake has become a major disaster that people pay more attention to. Taking the foundation pit and building structure under typical engineering geological conditions in Fuxin area as an example, a frame structure building adjacent to the foundation pit is analyzed by numerical simulation under different distance from the foundation pit. Deformation and internal force variation of building structure caused by excavation of foundation pit and mine earthquake. On the basis of summarizing the previous research results, this paper summarizes the deformation and internal force change of adjacent buildings caused by the action of mine earthquake and excavation of foundation pit. In this paper, the deformation law of adjacent building structures during excavation is analyzed by using finite element software ANSYS, which takes the foundation pit, pit soil and adjacent buildings as an integral system. The internal forces of frame structure before and after excavation and under the action of mine earthquake are calculated and analyzed, and the influence of excavation of foundation pit under mine earthquake on adjacent buildings is studied. The influence law of foundation pit excavation on adjacent buildings under the action of mine earthquake is found out, which provides a reference for the design and construction of practical engineering, and has a certain reference value for the relevant numerical simulation analysis and research in the future.
【學位授予單位】：遼寧工程技術大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TU753
本文編號：2407267
[Abstract]:With the development of our economy and society, the urban area is expanding, the land resources and natural resources are more and more tense, and the demand for energy is also increasing. As a result, more and more high-rise buildings, energy consumption figures are constantly refreshed. In mineral resource-based cities, the demolition of old buildings in urban areas, the construction of surrounding buildings and the mining of underground coal mines are going on every day. With the increase of mining frequency and mining quantity, the ore shock caused by mining is becoming more and more frequent. The excavation of foundation pit is often needed in the construction of high-rise building and underground engineering, and the scale and depth of excavation are increasing. Many foundation pit projects are located in the built-up area of the city, and are close to the foundation of existing buildings or structures. The excavation and support of foundation pit not only relate to the safety of the foundation pit itself, but also to the safety of adjacent buildings. In addition, more and more attention has been paid to the damage caused by mine earthquakes to surrounding buildings. Although the intensity of mine earthquake is small and the source is shallow, it is widely distributed and occurs frequently, which may cause casualties and property losses. Therefore, the secondary disaster caused by mine earthquake has become a major disaster that people pay more attention to. Taking the foundation pit and building structure under typical engineering geological conditions in Fuxin area as an example, a frame structure building adjacent to the foundation pit is analyzed by numerical simulation under different distance from the foundation pit. Deformation and internal force variation of building structure caused by excavation of foundation pit and mine earthquake. On the basis of summarizing the previous research results, this paper summarizes the deformation and internal force change of adjacent buildings caused by the action of mine earthquake and excavation of foundation pit. In this paper, the deformation law of adjacent building structures during excavation is analyzed by using finite element software ANSYS, which takes the foundation pit, pit soil and adjacent buildings as an integral system. The internal forces of frame structure before and after excavation and under the action of mine earthquake are calculated and analyzed, and the influence of excavation of foundation pit under mine earthquake on adjacent buildings is studied. The influence law of foundation pit excavation on adjacent buildings under the action of mine earthquake is found out, which provides a reference for the design and construction of practical engineering, and has a certain reference value for the relevant numerical simulation analysis and research in the future.
【學位授予單位】：遼寧工程技術大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TU753
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