挖坑沉基 的英文怎麼說
中文拼音 [wākēngchénjī]
挖坑沉基
英文
foundation by pit sinking-
When excavating deep foundation ditch in the lake sediment that filled with deep and thick silt, it is a common technical problem that the upheave which caused by relief loads leading to slope destabilization
摘要在湖泊相沉積的深厚淤泥土場地開挖深基坑,由於坑底卸荷隆起導致基坑邊坡位移、失穩是常見的技術難題。Measures preventing a nd handling hole caving are given based upon analyzing various factors that infl uence hole wall stability including objective, technological, environmental and artificial factors
開挖期間進行了水平位移及沉降、深層位移、圈樑應力、水位及水量等項監測,對監測結果進行了分析,對監測發現的問題及時進行了處理,為基坑開挖提供了保障。Numerical simulation is carried under different conditions, including ( a ) the different distance between deep foundation excavations and the adjacent structures ; ( b ) different supports are used, such as cantilever piles, row piles with one - layer grouted soil anchor, row piles with two - layer grouted soil anchor, row piles with three - layer grouted soil anchor and soil nailings etc. this paper reveal the law of adjacent structures and bracing structures displacements and surrounding soil settlements. anchor and soil nailing ' s impact on the displacements of adjacent structures is analyzed then. further more, we find the law of displacements of bracing structures, surrounding soil settlements, differential settlement and absolute settlements of adjacent structures that may appear in the process of excavation by steps
模擬分析了近鄰建築物在不同距離的條件下,懸臂支護、一層錨桿與排樁聯合支護、兩層錨桿與排樁聯合支護、三層錨桿與排樁聯合支護、土釘支護等幾種支護情況下的深基坑開挖過程,對深基坑工程開挖過程中近鄰建築物的變形、支護結構變形以及基坑外地層沉降的發展變化規律進行了分析總結;對錨桿和土釘支護對建築物變形的影響作了詳細地分析,找到了一些基坑開挖過程中基坑支護結構變形、周圍地層沉降、近臨建築不均勻沉降及絕對沉降的發展變化規律,得到了一些對深基坑工程設計和施工有工程實際意義的結論。Researching on the technology if reverse order is to study strains if pits, structural systems if basement, environmental surwey and underpinnings. on account of emphasizing developing methods if checking strength if pick - ets, modemizing machenes of excavation and studying methods of underpinning is put forward and is a way if controlling the quality of pickets in sites, which leads an active effect ; synthetic application if rankintheory, spatial and time effect theory to excavation tl aanalyze the state of soil force and strain is brought forward and the time effect should be considered in the zone of clay, the formation and development of soil plasticity are analyzed and the most dangerous zone to decide how to excavate and where to begin is found ; analyzing the cause of picket settlement during reverse order and the differential settlement and discussing hlw to solute it. duringh the temporary survey and the environmental warship, bringing rorward the theory of environmental vibration and analyzing the state of soil force and probability of losing stabilization of soil under the effect of environmental vibration ; analyzing the state offeree in underground concrete wall by the method of mathematics and pointing out the place of the maximum force and deformation. based on systematic illustrating the reverse order, problems about application and development of reverse order and suggestions also are expressed
鑒于國內外的研究把重點放在大力發展工程樁的實驗室承載力監測方法與設備、如何使土方開挖機械現代化及對周圍建築的臨測方法上,本文提出了現場利用聲波層析成像技術監測鋼砼樁內部質量的方法與程序,並得出了聲波層析成像技術是砼樁的動態質量檢測的有效手段,這對指導施有積極、現實意義;提出了綜合運用朗肯土壓力理論、基坑空間和時間效應影響理論來分析逆作法施工過程中基坑邊坡土體應力及應變的變化情況,指出粘土地區也應考慮時間效應,並且進一步分析了基坑邊坡土體的塑性區形成和發展,找出邊坡最不利的區域,以確定地下室土體的挖掘的方式和順序,指出憑主觀臆斷與經驗來施工是不可取的;在分析、經較逆作法與大開挖順作法的地下室結構體系受力情況及施工順序的不同,提出了節點處理技術;分析了逆作法施工期間樁的沉降變化原因及由此而產生的差異,並探討了解決的方法;本文還提出了環境振動對土體邊坡穩定產生影響的觀點,並分析了在環境振動影響下,土體的應力狀態及土休失穩破壞概率,並且還運用彈性力學知識和數學分析的方法定量地分析了地下混凝土墻受力狀態,指出了被監測墻體的最大應力、應變位置。Dredging of an immersed tube tunnel trench to - 30mpd alongside the existing gravity structure seawalls would undermine the seawalls, the bases of which are around - 5mpd
現有的重力式結構海堤的地基在主水平基準面以下約5米,沿海堤挖掘沉管隧道坑道至主水平基準面以下30米會削弱這些海堤。Dewatering in deep excavation will cause settlement of surrounding soils
摘要深基坑開挖中的降水會引起周圍土體沉降。The main causes of breakage were concrete tube pile instability of foundation pit or failure of its bracing, soil squeeze due to pile driving, incorrect excavation and incorrect heap of soil
摘要造成混凝土管樁傾斜與斷裂的主要原因為基坑邊坡失穩或支護結構破壞、沉樁擠土效應以及挖土與堆土不當等。Regarding foundation - pit scope of numerical analysis as a system ; settlement of foundation - pit boundary, displacement of retaining structure and swell of foundation - pit bottom as output of the system ; factors during construction of draining water, earth excavation and retaining structure as input of the system
為此視基坑數值分析范圍為一個系統,基坑周邊沉降、支護結構位移和坑底隆起為系統輸出量,降水、開挖和支護施工各工況中變化的因素為系統輸入量。So, the following questions such as : how to simulate the process of excavating and retaining of the deep foundation pit engineering, how to calculate and analyze the pressure and deformation of the surrounding soil, how to calculate and analyze the deformation of retaining structure in the course of excavating, how to predict the earth subsidence and the swelling of pit bottom, and how to predict the deflection of surrounding pipes in loess area, are all worth researching
黃土地區深基坑工程技術與理論研究尚處于起步階段,因此如何對黃土地區深基坑開挖與支護過程進行模擬,對深基坑周圍土體的壓力、變形及支護結構的變形隨基坑開挖過程所發生的變化進行計算與分析,對地表面的沉降和坑底的隆起、周圍管線的變位進行預報則成為一個值得研究的課題。The thesis introduces the biot ' s three - dimension consolidation theory based on absolute linear - elastic theory ; the thesis designs the pit dewatering scheme of hand - dug piles support of shenyang subway ' s shenyang station construction ; the thesis uses finite element program to simulate the influence on around environments caused by pit dewatering, and finds the change laws of earth mass inner stress and the effect parameters on the surface deformation on the basis of reasonable hypothesis and the analysis of ground water exploitation progress. combined with stochastic medium theory, the thesis introduces dewatering subsidence coefficient, sets up the predicting model of the surface deformation caused by dewatering, and develops the computing program ; by application of program on a single well of underwater exploitation, it is proved that the program is feasible, so the prediction of the surface deformation caused by underwater exploitation is realized
本文介紹了基於線彈性本構關系的biot理論;設計了擬建沈陽地鐵沈陽站點人工挖孔樁支護施工的基坑降水方案;利用有限元程序,模擬了基坑降水對周圍環境的影響;在合理假設的基礎上,分析了地下水開采過程中,地層應力的變化規律,找到了影響地面變形的參數;與隨機介質理論相結合,通過引入采水下沉系數建立了地下水開采引起地面變形的預計計算模型,並編制了電算化程序;通過某單井開采實例驗證了該方法的可行性,實現了地下水開采引起地面變形的預計。The plane fem model analyzes the behaviors of deep excavation, and the step - excavation effect during excavation is studied such as the horizontal displacement of the retaining wall, ground settlement and the forces in struts
利用平面有限元模型對深基坑工程的開挖性狀進行了分析,研究了開挖過程中圍護結構的水平位移、墻後土體的地表沉降、支撐力等的分步開挖效應。Study of land subsidence caused by from groundwater lowering during deep foundation pit excavation
深基坑開挖降水導致地面沉降機理研究In this article, geotechnical engineering numerical analysis program flac4. 0 is used, working mechanism and main influential factor of composite soil nailing system with step excavation was calculated in detailed, contain distribution and influential factors of axial force and the max axial force in soil nails ; the variation of axial force in anchors ; the variation and influential factor of foundation pit horizontal displacement, ground surface settlement, ground surface horizontal displacement and rebound deformation
本文採用巖土工程數值分析軟體flac4 . 0 ,對樁錨復合土釘支護在分步開挖下的工作性能和主要影響因素進行了詳細的計算,分析了土釘軸力和最大軸力的分佈規律、影響因素;錨桿軸力的變化規律;基坑水平位移、地表沉降、地表水平位移和坑底隆起的變化規律以及影響因素的敏感程度。In the article, the author states the present situation in deep excavation and analyses the form of earth force, water force, model of calculation and deformation caused by excavating. in details, the author introduces a new technique, which is called circular beams bracing system in deep excavation, states the steps of calculation, construction and inspect
本文系統的闡述了目前深基坑支護的狀況,對基坑支護中的土壓力、水壓力、基坑開挖對地面沉降的影響以及目前常用的計算方法作了詳細介紹;著重對新型環梁支護體系的計算、監測方法和施工工藝進行了探討。The deep foundation excavatfon takes many methods of enclosure in city construction, today there are some immature experiences and lots of teaches on the prediction, prevetion and the control of environmental detrimental effects ( mainly uneven soil set outside foundation pit and effect on cityscape traffic, etc
城市建設中的深基坑開挖採用多種圍護形式,施工產生的環境病害(主要是坑外附近地表土層不均勻沉降及工程施工對道路交通的干擾)預測及防治已有一些經驗,但教訓也不少。In this thesis, based on the principles of hydraulic mechanics and soil mechanics, the change of effective stress in soil mass and the settlement of ground surface induced by dewatering during excavation both in homogeneous soil and in layered soil were studied. analytical formulas for calculating the settlement and the others were derived under the assumption that the seepage induced by dewatering is one - dimensional and vertical
本文運用水力學和土力學的基本理論,在一維豎向滲流的假定下對均質土和成層土中基坑開挖降水引起的坑內外土中應力變化及周圍地表沉降的計算方法進行了較深入的研究,推導了相應的地表沉降等計算公式。To predict the settlement of surrounding soils during excavation, axisymmetric model was established in fem software to analyze the problem by use of fem based on the biot ' s consolidation theory
為預測基坑開挖及降水過程中周圍土體的沉降,本文採用基於比奧固結理論的有限單元法在大型有限元軟體中建立軸對稱模型進行了分析。分享友人