sand drain 中文意思是什麼
sand drain
解釋
地基處理砂井-
Based on the equal strain consolidation model of sand drain, and neglecting the well resistance and the vertical drainage consolidation, a layered model for the nonlinear consolidation of sand drain, which accounts for the geostatic pressure varying along depth and the relationship between the average viod ratio and the logarithm of average effective stress, is presented
摘要基於砂井等應變固結模型，考慮初始有效應力沿深度變化，忽略井阻和豎向排水固結的影響，應用平均孔隙比與平均有效應力的對數關系，建立砂井非線性徑向排水固結的分層計算模型，並求得常荷載作用下的徑向排水固結解析解。 -
The curves of the consolidation settlement in soft clay base of flood land are gained, which compare the effect of sand drain. the settlement - time curves in different period are also gained, which increase the height of embankment to 8m, based on the test data of hang - yong highway. furthermore, the consolidation settlement characters of these entity engineering are analyzed, and, the variation rules of the rate of grade and degree of the curves in different period in the whole section, the maximal settlement and the liner regression relations between the rate of grade and degree are calculated
本文利用大變形固結有限元分析程序（ lscfea ）中的小變形平面固結分析單元（ sse2 ） ，結合實體工程項目進行了地基固結沉降的有限元計算，分別得出河灘相軟土地基在考慮砂井和未考慮砂井作用下的固結沉降曲線及杭甬高速公路試驗段在高堆載情況下的固結沉降曲線；並對以上曲線特徵進行了分析，得出各時間段曲線斜率、角度在整個斷面的變化規律，以及沉降最大值與斜率、角度變化之間的線性回歸關系。 -
There are many ways to handle the soft soil, such as : use the sand mat as a layer, carry to press in advance, press by thin film in the vacuum in advance, drain by use the sand well, drain by plastics plank, and reunite the foundation
軟土的處理有許多方法，如：砂墊層，堆載預壓法，薄膜真空預壓法，袋裝砂井排水法，塑料排水板法，復合地基法。 -
Among soft - base improvement methods, prefabricated drain preloading is one of the most popular vertical drain methods. it is developed from sand drain preloading method
塑料板排水預壓法是在砂井排水預壓法的基礎上發展起來的，是一種行之有效的軟基加固方法。 -
Construction technology of pack - drain, sand cushion and geogrid method for soft ground improvement
砂墊層和土工格柵加固軟土地基施工技術 -
That is, the partially penetrating sand drain ground is viewed as the double - layered ground, and its consolidation is analyzed with 1 - d consolidation theory, through the transformation from 3 - d consolidation to 1 - d consolidation in the region of sand drain. this can overcome the disadvantage that the excess pore water is discontinuous between the region of sand drain and under - lying soft layer. to the double - layered ground, based on the consolidation mechanism under surcharge, the excess pore water pressure calculation formula is deduced under the condition of multilevel equably loading or unloading, which perfects the consolidation theory
然後，在充分考慮豎井區井阻、塗抹作用以及土體結構損傷破壞對固結影響的基礎上，將未打穿豎井地基合理地轉化為雙層地基，按一維固結理論計算，克服了傳統固結計算方法在豎井處理區與下臥層交界面處存在孔壓間斷的缺點；在此基礎上，從超載預壓法的基本原理出發，分析了雙層地基超載預壓固結、沉降機理，推導了多級等速加、卸載情況下雙層地基的固結計算公式，進一步完善了雙層地基固結理論。 -
It indicts that, in the deep & thick soft ground improved by preloading or surcharge loading with sand drain partially penetrating, post - construction settlement mostly results from the dissipation of remained excess pore water pressure and the proportion of compress occurred in under - lying soft layer to total post - construction settlement is becoming larger with the time
而後，結合工程實例，分析了超載預壓時間、超載大小以及豎井處理深度對深厚軟土末打穿豎井地基有效應力面積比r的影響，探討用r作為深厚軟土未打穿豎井超載預壓地基卸載控制標準的可行性。 -
The results show that the increase of vacuum energy can not expand the influence scope of vacuum degree obviously when vacuum degree under membrane is high. the vacuum degree in the pvds is higher than vacuum degree in the sand drains, and the vacuum degree in the sand drain is higher than vacuum degree in the silt at the same depth in the ground during the initial stage of pumping
分析結果表明：當膜下真空度較高時，真空能量的增加不會明顯增大真空度的影響范圍；在抽真空的初期，一般在地基相同的深度處：塑排真空度砂井真空度淤泥真空度。 -
15 raw sludge, no matter from primary or secondary settling, will not drain well on sand beds and will usually have an obnoxious odour
生的（未經處理的）泥漿，無論是來源於初次或者二次的沉澱，都不會很好的滲漏在沙床上而且會散發難聞的氣味。
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