次性粘土 的英文怎麼說
中文拼音 [cìxìngniántǔ]
次性粘土
英文
secondary clay-
The results indicate that : 1. the main physical and chemical characteristics vary regularly : with rising of the altitude, there is a transition from silt > sand > clay to sand > silt > clay in the mechanical composition ; the argic horizon emerges below the altitude of 1600 meters ; the content of organic matter is enrichment, the content of organic carbon of epipedon is higher than 20 g / kg, while the content of organic carbon increases with increasing of altitude, and in the altitude of 3500 - 3700meters, the soils under the meadow have the maximum content organic carbon ; the soils appear acid - slightly acid reaction, the ph decreases appreciably and acid strengthen with increasing of altitude ; the soils higher than the altitude of 2500 meters are base unsaturated, indicating the soil leaching is strong, the ph and bs are distinct plus correlated ; the contents of sio2, al2o3, and fe2o3 of the soil body and clay are all relatively stabilization ; in the soil body, the content of sio2 is much high and cao is very little, the total contents of sio2, a12o3 and fe2o3 occupy 92 % of the mineral parts, the sequence of mineral elements is : sio2 > al2o3 > fe2o3 > k2o > mgo > cao > tio2 > mno
研究結果表明: 1太白山南坡土壤的主要理化性質隨海拔高度的上升呈有規律的變化:隨海拔高度上升,機械組成由粉粒砂粒粘粒逐漸過渡到砂粒粉粒粘粒,海拔1600m以下出現粘化層;土壤有機質豐富,表層有機碳含量一般在20g kg以上,有機碳含量隨海拔高度升高而相應增加,海拔3500 3700m的灌叢草甸植被下有機碳含量最高;土壤呈酸性或微酸性,並隨海拔上升, ph值略微降低,酸性增強,海拔2700m以上的土壤多呈鹽基不飽和狀態,表明土壤淋溶作用較強, ph值和鹽基飽和度呈極顯著正相關;土體與粘粒中的sio _ 2 、 al _ 2o _ 3 、 fe _ 2o _ 3含量相對比較穩定,土體中sio _ 2含量較高, cao含量較少, sio _ 2 、 al _ 2o _ 3和fe _ 2o _ 3含量之和約占土壤礦質部分的92 ,礦質元素含量的順序依次為: sio _ 2 al _ 2o _ 3 fe _ 2o _ 3 k _ 2o mgo cao tio _ 2 mno 。Following is the factors ideating with the surface of old concrete in different way ( including brushing surface, chiseling surface, cleaving surface ), adherence agent ( including cement slurry, cement sand slurry, cement slurry with the u expansion agent ), the freeze - thaw circulation times and air - entraining. as a result, we found that the roughness influence on the adhesion capability of the new on old concrete to a large degree. the larger rougeness is, the larger the splitting tensile strength on the adhension face is. the kind of adhesion agent is also influence on the adherence capability of new on old concrete. the circulation times of freez - thaw have a large influence on the splitting tensile strength of adherence face of new on old concrete. the analysis of tests give some advices to the practical engineering
主要考察了老混凝土表面不同處理方式(刷毛面,鑿毛面,劈裂面) 、界面粘結劑類型(水泥凈漿,水泥砂漿, u型膨脹劑水泥漿) 、凍融循環次數等對新老混凝土粘結面劈拉強度的影響,以及凍融作用下新混凝土加氣對粘結面劈拉強度的影響。試驗結果表明,粗糙度對新老混凝土粘結性能有重要影響,隨著粘結面粗糙度的增大,粘結面劈拉強度不斷增加;界面粘結劑類型對新老混凝土粘結性能有一定影響,在凍融作用下, u型膨脹劑水泥漿粘結效果不如水泥凈漿和水泥砂漿;凍融循環對粘結面劈拉強度有較大影響,加氣能明顯改善新老混凝土粘結面的抗凍能力。On the basis of analysis on the pairwise action of cement paste, nanometer silica fume and clay, the paper proposes the reinforcement mechanism of the cemented soil stabilized with nanometer silica fume. the reinforcement mechanism includes cementation action of cement hydrate, ionic exchange and quadrate reaction of clay particle, pozzolanic effect, filling effect and cementation action of nanometer silica fume
在研究水泥漿?納米硅粉、納米硅粉?粘性土、水泥漿?粘性土相互作用的基礎上,將納米硅粉水泥土的固化機理總結為:水泥水化物的膠結作用、粘土顆粒中的離子交換效應和「二次反應」 、納米硅粉的火山灰效應、納米硅粉的填充效應、納米硅粉的膠結作用。As a whole, the research work of this dissertation can be summarized follows : 1. in accordance with my design patent, namely, reinforced earth retaining wall of r c net, and based on the analysis of the work mechanism, failure pattern, bearing capacity and stability of the reinforced earth, a new concept is expounded, namely, the reinforced earth wall which is thought of as a compound structure increase not only c but also ~ in comparison with non - reinforced earth. some bearing capacity formula are first introduced under the circumstances that the reinforced earth wall fails because of the breakage of material or inadequate cohesion between reinforcements and soil
歸納起來,具體的研究和所獲得的一些重要成果如下: 1 、結合本人的設計專利? 「鋼筋混凝土網格式加筋擋墻」及工程實踐,在對加筋土的加筋機理、破壞模式、承載力和穩定性等方面進行深入分析的基礎上,提出了一個新概念,即經過加筋后的土體作為復合結構與原土體相比,不僅提高了內聚力,而且也提高內摩擦角;並在此前提下首次導出拉力破壞和粘著破壞兩種情形下的承載力公式,然後進行了穩定性分析。The prime works are as follows : strain and stress distribution of section was analyzed. the effect of prestress degree. on cracking moment was explored. the relation of the unbonded prestress increment to effective reinforcement index and corresponding bonded prestress increment were studied. the formulae had been established
其次,設計了三根活性粉末混凝土無粘結預應力疊合梁,兩點對稱集中加載、一次受力,得到了它們的截面應變分佈、撓度與變形、無粘結預應力鋼絞線的預應力增量、裂縫的發展與分佈以及極限荷載。And the main factors which influence modification of montmorillonite, were thoroughly studied and summarized in detail. then an optimum modifying scheme was made out. x - ray diffraction ( xrd ) results illustrate that the crystallized interlayer space of montmorillonite was expanded from 1. 5nm to 1. 7nm
以烷基胺作為有機改性劑,詳細研究了影響粘土有機改性的主要因素,總結出了一套經濟、實用的改性蒙脫土的方案,在國內首次達到中試水平, xrd和ir結果表明:蒙脫土的改性取得成功。But there are no report of the design and research on bionic adhesion decreasing efficiency of the standard disk plow that has a great difference to other soil touched component on working manner and force support status currently. in this paper, standard disk plow was selected to be research object. with disk plow referred as bionic components and the theory of soil touched component adhesion decreasing and resistance reducing applied, we modified its shape and promoted its property
本文選擇標準型圓盤犁作為試驗研究對象,以圓盤犁刀為具體的仿生設計部件,運用觸土部件減粘脫土理論,在仿生表面改性、改形研究以及傳統圓盤犁刀結構基礎上,首先對圓盤犁刀進行了若干種仿生非光滑結構不同組合設計,繼而製作了兩組試驗用仿生圓盤犁刀,最後對設計加工的仿生圓盤犁刀,分別進行了正交試驗設計和二次回歸試驗設計,在室內土槽中進行了研究條件下的耕作試驗。Abstract : yanchang series is a typical low permeability reservoir, and its favourable sandstone reservoir is delta facies. heavy compaction, cementation and heterogeneity exist in it. according to the analysis of the main control factors of forming the secondary pore, it is held that the secondary pore in longdong area is controlled by both favorable facies belt and abnormal formation pressure. it is also held that the formation of the abnormal formation pressure is due to the dewatering of the clay mineral during diagenesis because the dewatering time is identical with the decarboxylation time of organism. organic acid and co2 are driven to adjacent favorable reservoirs under the abnormal formation pressure, and a lot of secondary pore is produced in the runners. from the present exploration result, it is useful to predicting the development of secondary pore to study the distribution of abnormal formation pressure
文摘:陜甘寧盆地三疊系延長統是國內外典型的低滲特低滲油田,儲集層主要為三角洲砂體,壓實作用和膠結作用強烈,儲層非均質性非常嚴重,因此預測次生孔隙發育帶是尋找油氣聚集帶的關鍵.通過對陜甘寧盆地隴東地區延長統次生孔隙形成的主控因素分析,認為陜甘寧盆地延長統次生孔隙的形成除了受沉積有利相帶控制外,還與地層異常壓力的作用密切相關.研究認為隴東地區異常壓力的形成機理主要由於成巖過程中粘土礦物脫水作用.粘土礦物大量脫水時間正好與有機質脫羧期相一致,從而在異常壓力作用下將生油巖中的大量有機酸及co2帶到與之相鄰的儲集層中,並沿著有利儲集相帶運移,在酸性水經過的地方形成大量的次生孔隙,為後期油氣運聚提供有利通道及宿住空間,從現今的勘探結果來看,通過研究地層異常壓力縱橫向分佈特徵,並結合有利相帶研究預測次生孔隙育良帶是行之有效的方法Yanchang series is a typical low permeability reservoir, and its favourable sandstone reservoir is delta facies. heavy compaction, cementation and heterogeneity exist in it. according to the analysis of the main control factors of forming the secondary pore, it is held that the secondary pore in longdong area is controlled by both favorable facies belt and abnormal formation pressure. it is also held that the formation of the abnormal formation pressure is due to the dewatering of the clay mineral during diagenesis because the dewatering time is identical with the decarboxylation time of organism. organic acid and co2 are driven to adjacent favorable reservoirs under the abnormal formation pressure, and a lot of secondary pore is produced in the runners. from the present exploration result, it is useful to predicting the development of secondary pore to study the distribution of abnormal formation pressure
陜甘寧盆地三疊系延長統是國內外典型的低滲特低滲油田,儲集層主要為三角洲砂體,壓實作用和膠結作用強烈,儲層非均質性非常嚴重,因此預測次生孔隙發育帶是尋找油氣聚集帶的關鍵.通過對陜甘寧盆地隴東地區延長統次生孔隙形成的主控因素分析,認為陜甘寧盆地延長統次生孔隙的形成除了受沉積有利相帶控制外,還與地層異常壓力的作用密切相關.研究認為隴東地區異常壓力的形成機理主要由於成巖過程中粘土礦物脫水作用.粘土礦物大量脫水時間正好與有機質脫羧期相一致,從而在異常壓力作用下將生油巖中的大量有機酸及co2帶到與之相鄰的儲集層中,並沿著有利儲集相帶運移,在酸性水經過的地方形成大量的次生孔隙,為後期油氣運聚提供有利通道及宿住空間,從現今的勘探結果來看,通過研究地層異常壓力縱橫向分佈特徵,並結合有利相帶研究預測次生孔隙育良帶是行之有效的方法The conclusions are as follows : ( 1 ) the compose of rpc has an effect on the bond behavior between cfrp bars and rpc : the bond strength between cfrp bars and rpc will increase with the decrease of water to cement ratio, but doesn ’ t obviously ; the adding of steel fiber can improve the bond behavior between cfrp bars and rpc significantly, but steel fiber will also effect the workability of rpc, consider the bond behavior and economy, the content of steel fiber should be 2 % ;. silica fume can improve the bond strength between cfrp bar and rpc, but the bond strength isn ’ t in proportion to the content of silica fume, in this experiment, the optimal content of silica fume is 0. 25 to 0. 35
試驗研究得到如下結果: ( 1 ) rpc的材料組成對rpc與cfrp筋粘結強度的影響: cfrp筋與活性粉末混凝土的粘結強度隨著水膠比的降低而提高,但是提高的幅度並不明顯;鋼纖維的摻入,可以顯著提高cfrp筋與rpc的粘結強度,但是鋼纖維的增強效果與摻量並不是線性增加的關系,從綜合經濟性及粘結強度兩方面考慮,鋼纖維的最佳摻量為2 % ;摻入硅灰有利於改善粘結性能,但其摻量有一最佳范圍,在本次試驗中,硅灰的最佳摻量為0 . 25 0 . 35 。The nancha suspending - gay bridge of the changjiang road - bridge in jiangshu runyang, with a main span of 1490m, ranks first in china, third in the world. the north rivets, only 250m from the main stream of changjiang, have a tight liaison with the waterpower of it. especially, in this area, the face of rocks undulates a lot and exist fault - fabric. the soil there has apparent difference with the trend of water. the base - hole of north rivets can be named a super - deep one, with a 60m length, 50m widths, and 48m depths. the fence of the base takes advantages of the rectangular underground continuous wall structure and succeeds
江蘇潤揚長江公路大橋南汊懸索橋,主跨1490m ,居中國第一,世界第三。該橋的北錨碇距長江幹流僅250m ,與長江水力聯系密切,錨碇區水文、地質情況復雜,表層淤泥質土及松軟粘土層較厚,基巖頂面起伏較大,且存在斷裂構造,土層具明顯的流變特性。北錨碇基坑為長60m 、寬50m 、深48m的矩形超深基坑,其基礎圍護在國內首次採用矩形地下連續墻結構,並獲得成功。Appraise the test scheme of dynamic consolidation of each test district before test and make optimization suggestions ; 4. the grain - size distrilidation of the underlayer of dynamic consolidation has great on consumption of the energy i, the better the dynamic consolidation effect is ; 5. the deformation effect of dynamic consolidation foundation is that not only the settlement deformation of foundation will decrease greatly after pounding, but residual settlement deformation in each test district are compared, it can be concluded that the deformation stability of foundation of the runway engineering of pu - dong airport can satisfy the design requirment through dynamic consolidation according to optimized test scheme. but the underlayer of dynamic consolidation should be made when pounding
論文的主要工作和研究認識如下: ( 1 )確定必要的強夯施工參數; ( 2 )對既有砂性土又有粘性土地基的最佳夯擊次數的確定方法進行了探討; ( 3 )對試驗前各試驗小區的強夯試驗方案進行了評價,並提出了優化建議; ( 4 )強夯墊層材料的級配對夯擊能的消耗有很大影響,級配好的墊層對夯擊能的傳遞比級配差的墊層效果好; ( 5 )強夯地基的變形效應主要是指夯后地基不但沉降變形會大幅度降低,而且剩餘沉降變形會緩慢地發生; ( 6 )在比較各試驗小區的變形穩定性后,按照優化后的試驗方案進行強夯處理,則浦東機場場道工程地基的變形穩定性能滿足設計要求,但須在處理時施加強夯墊層。Because these factors make change more often, soil time space variability is more bigger. the relationship of single factor between soil water infiltration capacities and certain influencing factor could be established quantitatively by means of soil water infiltration tests in indoor, there is negative correlation relation between soil water infiltration capacities and soil structure. there is negative correlation relation in high grit content and low physical clay content soil, and second - degree polynomial relation in high physical clay content junk structural soil between soil water infiltration capacities and soil moisture
由於這些因素在時刻發生變化,使得土壤的時空變異性較大,只能用室內土壤水分入滲試驗來定量確定土壤水分入滲能力與某些影響因素之間的單因子相關關系,土壤水分入滲能力與土壤結構之間呈負相關關系,土壤水分入滲能力與土壤含水量之間在土壤砂粒含量高,物理性粘粒含量低的無結構土壤中呈負相關關系,在物理性粘粒含量高的團粒結構土壤中呈二次多項式關系。It was shown that salt expansion value of low liquid - limit clay was accumulated before the sixth freezing and thawing cycles, but the increment of salt expansion was reduced gradually with increasing cycles ; the salt expansion accumulation of low liquid - limit clay could be separated into three phases ; the deformation of clayey sand was mostly frost heave and subsidence under cycles, and collapsibility value of clayey sand was accumulated with increasing cycles ; the variation of salt expansion ratio and collapsibility ratio was a parabolic function of freezing and thawing cycles
試驗結果表明:低液限粘土前五次凍融循環過程中鹽脹具有較好累加性,隨著凍融循環次數的增加,鹽脹量增長速度逐漸降低;含砂低液限粘土的鹽脹過程可以被分為三個階段;粘土質砂在凍融循環過程中的變形主要為凍脹和沉降變形,具有較好的溶陷累加性;低液限粘土、含砂低液限粘土的鹽脹率和粘土質砂的溶陷率與凍融周期之間的關系符合二次拋物線變化規律。Through the bonding tests and the theory analysis between the advanced composite glass sheets and the concrete under the general load - carrying condition, the iterative load - carrying condition, the freeze - thaw action, and the defective bonding, the calculative model has been established, and the numerical value of fibre sheet strain under different load - carrying has been confirmed. the bond strength calculative expressions for the concrete bonded with glass fibre sheet under the pull - shear and the bend load - carrying conditions have been established. the author put forward the decreasing coefficient and the calculative expressions for the influence of reinforce effect by the non - effective area and the calculative expressions for the influence of the freeze - thaw action on the carrying capacity of the concrete beams
本文採用美國泰扶高強復合玻璃纖維布以及與之性能相當、由南京玻璃纖維研究院自行研製開發的egfw430型玻璃纖維布兩種材料,通過在靜載、重復荷載、凍融及有缺陷粘結條件下的高強玻璃纖維布與混凝土粘結性能的試驗研究與理論分析,建立了玻璃纖維布-混凝土的粘結計算模型,明確了不同受力狀態下纖維布應變的設計取值,提出了玻璃纖維布-混凝土抗剪粘結強度的計算公式;確定了考慮非有效粘貼面積對加固效果影響的折減系數;給出了凍融循環次數引起承載力下降的插值計算方法;並驗證了重復荷載作用下玻璃纖維布與混凝土良好的粘結性能。The result of macro - quality experiments show : mineral admixtures markedly slow the hydrating velocity of cement slurry, decrease and delay the hydrating max - temperature, in which steel slag is more effective ; expansive agents compensate concrete shrinkage, enhance the concrete dense degree, strengthen the interfacial layer between fiber and cement matrix and improve the physical mechanics qualities of acic ; minimal admixtures markedly improve the concrete workability property, increase the concrete later intensity & density and the capability of anti - chemical attack and anti - permeability ; hybrid fiber reinforces the toughness of obviously acic by the means of anti - cracking effect of fiber with different sizes and different properties in the corresponding construction levels
實驗結果顯示:鋼渣摻合料能顯著減緩水泥漿體水化速率,降低砂漿的水化溫升並延遲最高溫升時間;補償混凝土收縮,提高混凝土密實度,加強纖維與水泥石的界面粘結,增強混凝土力學性能,但不能明顯改善混凝土韌性。混雜纖維通過纖維的不同尺度與不同性質在相應的結構層次上產生阻裂效應,增韌鋼渣防滲抗裂混凝土;增加混凝土的破壞極限能,極大提高混凝土抗彎曲能力和韌性指數,改善混凝土脆性。The research indicate that the structured soft clay has below several characteristic, the viscous strain is produced during the stage of primary consolidation and of second consolidation, and in the prophase, the relation of stress - strain - strain rate is unique, so the form of constitutive model, such as, f ( v ', e ) = 0, f ( ' v, e, t ) = 0, ca n ' t describe strain behavior of soil skeleton rationally ; the time - dependent properties involve three aspects, in addition the time - dependent strain, apparent preconsolidation pressures that depend on strain rate, and the effect of creep compression on apparent preconsolidation pressures ; because of holding structural strength, the mechanics characteristic is determined by the magnitude of stress, and the compression curve is composed of several sections. by combining structural yield stress and it ' s characteristics with the improved time line model, a new one - dimensional elastic visco - plastic consolidation model is established
研究結果表明,結構性土的固結過程具有以下特性:主固結和次固結階段都包含有因土骨架的粘滯性移動而產生的變形,而且在正常固結階段,存在應力?應變?應變速率的唯一性, f ( _ v , e ) = 0 、 f ( _ v , e , t ) = 0形式的本構關系不足以描述土骨架的變形行為;固結壓縮過程中的時間效應包括三個方面的內容,除了應力應變關系與時間相關外,還包括粘滯性變形引起表觀前期固結壓力增加和屈服應力的應變速率效應;軟土的結構性使其力學特性與應力水平相關,壓縮曲線具有分段性。On the basis of the previous achievements and the settlement observed data, considering the obvious creep characteristic, visco - elastic - plastic creep model, which reflects the saturated soft clay ' s nonlinear deformation characteristic, has been proposed in this paper, with the consideration of the primary and secondary consolidation settlement. the soft clay visco - elastic and visco - plastic deformation is also depicted respectively
針對具有明顯流變特性的飽和軟粘土,在總結前人研究成果和整理沉降實測資料的基礎上,把主次固結沉降結合起來考慮,提出了反映其非線性變形特性的粘彈塑性流變模型,分別對土體的粘彈塑性變形進行描述。Starting from the aspect of practical engineering application, a calculation formula of the predicting inverse - analysis for the saturated soft clay ground settlement is established according to the merchant one - dimensional consolidation theory, and the relevant program is compiled
本文還從工程實際應用的角度出發,根據merchant粘彈性模型的一維固結理論解析解,建立了考慮主次固結的飽和軟粘土路基沉降反演預測計算公式,並編制了相應的計算程序。The influence of cross - correlations among three pairs of soil parameters on the reliability of reinforced retaining wall under various destructive models is discussed in this chapter. the three pairs of soil parameters are ( 1 ) the cohesion and friction angle, ( 2 ) the friction coefficient between fill and geotexile, and friction angle, and ( 3 ) the friction coefficient between fill and ground, and friction angle. the decision making of the reinforced retaining wall is carried on based on reliability theory by taking the minimum cost as the target
第四章對加筋土擋墻可靠性分析中有關參數的概率特性進行分析,以某加筋土擋墻為例,採用一次二階矩法對筋材抗拉、抗拔,擋墻整體抗傾、抗滑和地基承載力進行可靠性分析,並對兩種加筋方案情況下加筋土擋墻的可靠性進行分析比較;進行土性參數對可靠指標的敏感性分析;分析三對土性參數的互相關性,即土的粘聚力和內摩擦角、填土與筋材的摩擦系數和填土內摩擦角、填土與地基的摩擦系數和填土內摩擦角之間的互相關性對加筋土擋墻不同破壞模式可靠指標的影響。分享友人