土的性質(zhì)外文翻譯-全文預(yù)覽
【正文】 erties of loose, low strength and high pressibility. Fabric Structure Clay soil has its special structure, fabric configuration shown in Fig. 17. This concept of soil structure is arrived at through the current microscopy technique. Some clay grains may exists in randomly arranged picket or pads, which individually are made up of highly oriented particles. For this configuration, you should be aware of high pressibility due to high voids in the design of a foundation. Macro structure of a soil mass, such as beds,disappeared layers, lenses and deepgoing fissures, are very dangerous because they are the cause of high pressibility, low strength and differential settlement. The Important Parameters for Twophase and Threephase Soils From the construction point of view,soils are also divided into in situ soils that are in place and undisturbed, and artificial soil by human beings such as in situ and disturbed soil usually have solid, water, and air, known as threephase soils, which can be expressed in a schematic as shown in Fig. 18. All parameters are expressed in terms for a soil mass (threephase soil). Measurement of Voids Voids in soil are either expressed in terms of porosity or in terms of void ratio. Porosity n is defined as the ratio of volume of voids,Vv, to total volume of soil V and expressed as a percentage, while void ratio e is defined as the ratio of volume of voids to volume of particle Vs, expressed as a decimal. They are differently expressed without any reason other than custom . 土中的水 關(guān)于土中的水，我們可分為重力水或地下水，毛細(xì)水，結(jié)合水和礦物隔層水。水的形態(tài)存在粗粒土和優(yōu)質(zhì)土中都符合達(dá)西定律。根據(jù)太沙基和 Pech（ 1967）， cH 由 dTHc? 給出。 作為一名土力學(xué)工程師，你應(yīng)該知道介于毛細(xì)水和重力水的一個(gè)很大的區(qū)別：充滿重力水的飽和水區(qū)有靜水壓力，而由毛細(xì)水產(chǎn)生的孔隙水壓力應(yīng)該是消極的。這在地基的設(shè)計(jì)中是作為一個(gè)重要因素來考慮的。依靠 水的豐富或缺乏占領(lǐng)這個(gè)空間 ， 富含土壤彰顯其明顯腫脹和收縮性能 。非閉合氣體是連通的，直接流向大氣的，而閉合氣體保留了下來。 土體的結(jié)構(gòu)特點(diǎn) 1. 土的不同層 對(duì)于沉積地層，無論是否風(fēng)積，水積或冰積，這有不同層的土，粗粒土和細(xì)粒土，是自然的。 （ 2） 由于地層的厚度在水平方向發(fā)生改變，導(dǎo)致上層建筑的不均勻沉降。
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