沉降單位 的英文怎麼說
中文拼音 [chénjiàngdānwèi]
沉降單位
英文
svedberg unit-
In this paper, using the program ( epagpll ), the bored testing pile group of the chinese architecture science and research institute at luokou area are analysised. the comparisons among analytical results of four constitutive models of soil are made, and the deformation of piles and soil, the soil resistance of the piles, the friction beneath cap, the aclinic displacement of the ground soil before piles and the failure pattern of pile group are discussed in detail
本文利用所編的程序，對上海地區豎向荷載作用下的單樁的流變效應進行了分析，並通過樁體位移?時間關系曲線，確定軟土地基上豎直受力樁的承載力，分析了豎直受力樁的最終沉降量的大小，並結合《上海地區地基基礎》地方規范就程序計算結果進行了對比。On this foundation the article inducts in detail the method which is based on the relative settlement of calculating unit area end support ( qb ) force at the same time considering the feature of pedestal pile ' s " arch effect " the article introduces conception of pile effective length and finally obtain t he formula of calculating man - made pipe with bulb - shaped axial carrying capacity. the article uses marc program to calculate and analyze foundation soil ' s stress and displacement and gets the change curve chart and the proportion that is shared by king - pipe side soil friction resistance and pipe end counterforce respectively. the article inducts the structure of pedestal in detail on the basis of generalizing pedestal application cases of many countries
在此基礎上論文詳細歸納了以相對沉降為依據確定單位面積端承力q _ b的計算方法，並考慮擴底樁的「拱效應」特點引入了有效樁長的概念，最後結合公路規范推出了比較實用的人工挖孔擴底樁軸向承載力計算公式。論文運用了marc程序對地基土的應力和位移進行了有限元數值計算分析，得到了地基土的應力和位移場的變化曲線和在加載過程中樁側土摩阻力和樁端反力各自所承擔的比例；本文還在總結各國挖孔擴底樁應用情況的基礎上就擴底樁的構造進行了詳細的歸納。Besides, the sedimentary facies of upper ganchaigou and lower ganchaigou formation were also mapped in supersequences which are the main target strata for exploration. the high resolution sequence stratigraphic framework showed the genetic relationship between the distributions of sedimentary facies and their tectonic settings. the near - source sedimentary systems such as subaqueous alluvial fan and lake - floor fan are often deposed in rise - hemicycles in the steep slope background in the north, the coarse lithology of fan - delta prograded from north to south in fall - hemicycles, and the braided stream facies are formed in the rise - hemicycles in gentle slope background in the south, braided stream facies prograded from sorth to north in the fall - hemicycles, but the lacustrine facies and salt lake facies developed in the middle part of the area
詳細的沉積相研究發現，紅獅地區第三系發育有沖積扇、水下沖積扇、河流、三角洲、扇三角洲、湖泊和湖底扇7種主要沉積相類型，並對作為區內主要勘探目的層系的下乾柴溝組和上乾柴溝組進行了以超層序為單位的沉積相平面編圖，以較高的時間解析度揭示了區內沉積相帶的平面展布及其在不同構造背景中的分佈規律，比如在北部的凹陷陡坡背景下，上升半旋迴低水位期通常發育有水下扇、湖底扇等陡岸近源特徵的沉積體系，下降半旋迴高水位期，扇三角洲相粗碎屑巖由北向南進積;在南部的凹陷緩坡背景下，上升半旋迴主要發育辮狀河流相，下降半旋迴辮狀河三角洲相由南向北進積;而中部紅柳泉一獅子溝一帶則為湖泊相沉積和鹽類沉積。Abstract : molecular deposition ( md ) film, a nano film, is assembled by the interaction of static charge between cationic and anionic compounds. the micro - friction properties of an md film on silica has been studied with atomic force microscope ( afm ). it has been found that the md film has lower coefficient of friction as compared with the original surface of silica. moreover, based on the analyses of the surface force versus distance curves, photographic image, friction force image, and modulated force image, it is concluded that the friction reduction effect of md film on silica is attributed to the surface adhesion reduction and surface micro - modification
文摘:利用原子力顯微鏡對石英巖表面單層分子沉積膜的微觀摩擦特性進行了研究，發現該分子沉積膜具有一定的減摩性.通過對其表面力-位移曲線、表面形貌像、調制力像和摩擦力像的進一步分析表明，石英巖表面分子沉積膜具有減摩作用的原因在於它能夠降低表面的粘著力並對表面具有微觀修飾作用An advanced unit cell model was put forward to evaluate the settlement of deformable pile under flexible foundation
摘要為了分析柔性基礎下柔性樁復合地基的沉降問題，提出了改進的單元體位移模型。3. considering the longitudinal interaction between soil and single pile, theoretical solution for settlement of the unit cell is obtained
考慮樁與基土的縱向相互作用，推導了深攪樁復合地基單位元沉降的理論解答。The results of researches prove that by comparison with normal one, the cast - in - situ piles with expanded - base and post - pressure grouting have the advantages of low settlement and high bearing capacity
研究結果表明：與傳統灌注樁相比，擴底后注漿樁有沉降小，太原理工大學碩士學位論文單樁承載力高的特點。Conclusions as following have got through test study : ( 1 ) when impact compaction technology is applied to treat collapsible loess subgrade, the effect depth may be treated generally can not override 80 cm and impact compaction pass is optimum at 30 times. ( 2 ) for stratified impact compaction of subgrade, when compactness of each level reaches codeslstandards loose laying depth of 80 cm fits 40 impact compaction pass is the optimum combination of subgrade construction. when average compactness in each level reaches codeslstandards loose laying depth of 80 cm fits 30 impact compaction pass is the optimum combination o ( 3 ) the quality control method may request impact compaction pass as the main control index and at the same time the final division settlement is less than 10 % of total settlement as large area subgrade is constructed
通過試驗研究主要得出如下認識：沖擊壓實技術處理濕陷性黃土地基時，其有效處理深度一般不超過80cm ，沖壓遍數以30遍左右為宜；對路基分層沖壓，在要求土體中各點壓實度均達到規范要求時，路基沖壓最佳組合為虛鋪厚度80cm 、沖壓40遍；在只要求土體平均壓實度達到規范要求時，路基沖壓最佳組合為虛鋪厚度80cm 、沖壓30遍；大面積施工時，質量控制方法可按照在以沖壓遍數作為主要控制指標的同時，要求最後10遍分計沉降量小於累計沉降量10 ；在施工單位自己購置沖擊壓實機情況下，與傳統施工相比較，沖擊壓實技術是一種既能節約資金又能大量縮短工期的施工方法。Based on state - vectors load transfer method, this paper presents a new reliability analysis method of bored pile settlement. in the light of the eight full - scale piles, tests of the uncertainty analysis of pile settlement calculating by the new method is given. at last, this paper also analyzes the reliability of one of the eight piles
根據樁周阻抗三階段理論，提出了用荷載傳遞計算單樁沉降可靠度的方法，根據8根試樁靜載試驗及其原位測試資料，對該方法計算模式的不定性作了分析，並對其中一根樁的沉降進行了可靠度計算。Firstly, the theory of compound foundation and pile foundation are summarized in this paper. the finite element, displacement models and computational program are introduced, then how such factors as the stiffness of pile, the ratio of length and radius of the pile & replacement ratio influence the settlement of compound foundation are analyzed. there has the best modulus of pile, the best of the length & replacement ratio and some data have been obtained
首先總結了復合地基和樁基的理論和設計計算方法，對有限單元和位移模式以及有限元計算程序進行了介紹，然後分析了樁的剛度、長徑比、置換率等因素對復合地基沉降的影響，證實了帶承臺復合地基存在最佳樁土模量比、最佳長徑比和最佳置換率，並得出了相應的數值可供工程實踐參考。Firstly, for normal high building, second - class measurement could meet the needs of sinking survey ; secondly, the location of survey should be based on the design drawing and choosing the first structure layer as a survey period ; thirdly, the arrangement of the results of sinking survey should be regular and accurate by a certain person, and if there is problem present, it should be solved or done away with in time ; finally, the results of building sinking survey should be fed back in time to survey, design and construction units as reference for the next project
首先對一般的高層建築物來說，只需二等水準測量即可滿足沉降觀測的要求；其次，對于沉降觀測點及觀測的周期，通常要按照設計圖紙的要求布設觀測點，觀測的周期一般以一個結構層為一個觀測周期；第三，對沉降觀測結果的整理，要定期定人及時準確，發現問題要及時解決處理；最後，建築物沉降觀測的結果要及時反饋給勘察、設計和施工單位，為下一步的勘察、設計和施工提供可靠的參考依據。This paper has discussed preparing diamond - like carbon films by means of micro - wave ecr plasma source ion implantation and plasma enhanced chemical vapour deposition. we use the raman spectrum, ft - ir, afm and so on to study the dlc film. the result indicates : different bias voltage, frequency and gas flow rate of psii will have impact on sp3 proportion of dlc films, we find high bias voltage, low frequency and moderate gas flow rate can prepare high sp3 proportion dlc films ; we simply illustrate the influence of bias voltage on sp3 proportion of dlc films in pecvd
研究結果表明：在全方位離子注入技術中，不同的偏壓、頻率、氣體流量都對薄膜中sp ~ 3鍵比例有所影響，文中對具體的影響進行了分析，發現偏壓的增加、頻率的降低和適中的氣體流量可以制備出sp ~ 3鍵比例高的類金剛石膜；在等離子增強化學氣相沉積技術中，對偏壓對sp ~ 3鍵比例的影響也進行了簡單分析。From the particle settling point of view, the main factors affecting the compositional distributions of sediment have been analyzed. the result indicates that there exists quantitative relation between the compositional distributions of sediment and the settling quality ratio of the powders a and b. only the ratio varies does the compositional distributions of sediment change
結果表明：當有兩種不同種類的粉未a 、 b共同沉降時，沉積體的組成分佈與單位時間內a 、 b粉末的沉降量比存在定量關系，只有單位時間內a 、 b粉末的沉降量比變化時，沉積體的組成分佈才發生變化。( 4 ) in the interaction analysis of pile ? at foundation, the shear ? eformationed method which only deal with a single pile in homogeneous body previously has been developed so that the interaction analysis of piles with layer soil has been completed successfully. based on the flexible coefficient of the single pile, that coefficient of pile ? ile, pile ? oil or soil ? ile has been deduced, then rigid matrix of system of piles and layer soil can be gained
（ 4 ）在樁土共同作用分析中，本文發展了計算單樁沉降的剪切位移法，在得到單樁位移柔度系數的基礎上，進一步得到了樁?樁相互作用位移柔度系數和樁?土相互作用位移柔度系數，從而得到了樁?土體系的剛度矩陣，使之可用於進行層狀地基中群樁與土的共同作用分析。Thirdly, a calculation formula of distortion settlement is established by considering soil structure damage and plastic drain board restraining displacement of soft foundation. starting with discussing the main factors affecting settlement of consolidated foundation, a reasonable method to modify the calculated settlement of soft foundation by layer - wise summation method is presented here. with calculable coefficients of volume deformation, lateral displacement and structure damage to modify the settlement will be closed to measurer settlement
（ ）在土體損傷理論的基礎上建立了考慮結構損傷、排水板加筋作用的瞬時沉降計算公式，分析了影響土體沉降的主要因素，提出了對按單向分層總和法計算的固結沉降量進行體積應變、側向位移、土體結構損傷三項修正的方法，以上述三個修正系數取代原來單一的綜合經驗系數，使沉降計算值與實測值更接近。1. on the bases of some basic suppositions, terzaghi ' s one dimensional consolidation and principles of layered summation method, the paper draw the formula which can calculate the embankment of layered filling and take the formula into programme ; 2. building the finite difference model of layered high - stack soil, carrying out numerical simulation of construction sequence, construction velocity, interface element of layer - stacked, the author get the numerical solution
1利用一些基本假定，根據太沙基一維固結理論和分層總和法的基本原理，推導出來計算分層填築體自身沉降的公式，並編制了程序； 2建立了分層填築高填方路堤問題的有限差分模型，並對分層填築的施工順序、施工速度，界面單元進行了數值模擬，獲得了位移場和應力場的數值解。In order to fully develop the theory of squeezed branch piles, in particular, the justification of its superior performance in terms of the bearing capacity and sinking displacement, we have derived the analytical formulas of the axial load and the strain at arbitrary depth ; based on existing static loading test results and research on belled pile, together with the analysis of on - site testing data, we have applied the expand theory on sphere holes to the computation of radial stress of squeezed branch piles under hole expansion ; taking the oil pressure of hole expansion in to account, we have find the a branch force under certain hole pressures, hence we can estimate the maximum bearing capacity of single piles ; we have introduced the experiential formulas for the bearing capacity of squeezed branch piles based on its stress characteristic and pile testing data ; we have also done numerical simulations of squeezed branch piles utilizing finite element method software ansys ; we have matched the simulation res ults with those of on - site basic load experiments, regenerating the distributions of stress fields and strain fields of squeezed branch piles, and from those distributions, we can determine the optimal distances between plates and piles
為了完善支盤樁的設計理論，探求支盤樁高承載力和低沉降量的內涵，本文推導出了支盤樁任意深度的截面荷載以及位移隨深度變化的理論公式；基於已有的靜載試驗成果及有關擴底樁的研究成果，從對現場測試數據的分析，將球形孔擴張理論引入到支盤樁擴孔時徑向應力的計算，考慮到擴孔時的油壓數據，求得某一孔壓下的支盤力，據此估算單樁極限承載力；同時根據對支盤樁的受力特點和試樁數據的分析，提出了支盤樁承載力計算的經驗公式；用有限元分析的方法，利用大型有限元分析軟體ansys對支盤樁進行數值模擬，並將模擬結果同現場的靜載試驗結果進行對比，再現了支盤樁在荷載作用下土中應力場和位移場的變化，根據應力場和位移場的變化范圍，指出最佳盤間距和樁間距；為支盤樁的設計和施工提供了一個可量化的設計依據。分享友人