模型 1.(仿制實物) model; pattern 模型所代表的實物 antitype; 模型展品scale model; 飛機模型 model of an airplane; 復制模型 replica; 原尺寸模型 mock-up; 機器的模型 pattern of a machine; 做一個汽船模型 model a steamboat; 他用粘土做模型。 he models in clay.2.(制砂型的工具) mould; pattern3.(模子) model set; mould pattern; layout; type; representation; cast; version; matrix; mock-up; shape
Considering the similitude law for shaking table test , we study the test results and obtain some conclusions which are a ) generally , the silty soil in test box liquefies and the liquefied time has relation with the amplitude of acceleration , b ) when the intensity is on and above eight degree , the silty soil deposit will be liquefied dramatically , c ) the relationship of the pore water pressure is relevant to the cycle loading which represents when the cycle loading ranges from little to great , the relationship is represent as a concave curve , or else as a protruding curve and tends to stability . ( 3 ) based on the triaxial compression test and the resonant column test , some studies are made such as a ) the duncan - chang parameters of constitutive model , b ) the dynamic shear modulus ratio and c ) the damping ratio of the site soil deposits . in order to deal with the test data , a computer program is compiled ( 2 )利用小型振動臺進行了k _ 0固結狀態下粉土的振動液化模擬研究,通過分析正弦荷載作用下的試驗資料,驗證了粉土的孔隙水壓力增長模式的合理性;從微分方程推導了基于土體振動臺模型試驗的相似律,并從模型實體、孔壓時程曲線和相似律等方面做出了分析,得出了如下結論:在小型振動臺試驗中,模型箱中的粉土都發生了液化,液化的時刻和輸入加速度幅值有關,而對頻率的變化不太敏感;粉土在相當于8 9度地震烈度的加速度幅值作用下可能產生嚴重的液化;孔壓的增長曲線形狀與施加的荷載有關:當施加荷載為由小到大的形式時,曲線形狀為上凹的曲線;當施加荷載為等幅的正弦荷載或荷載幅值由大到小時,曲線形狀為上凸的曲線,且逐漸趨于穩定。
Secondly , a study of one kind of composite soil nailing , that is , a combination of soil nails with waterproof cement - soil mixing pile wall , was carried out by laboratory model test , the retaining structures were modeled according to a similarity rule that geometric length of the structure is in inverse proportion to deformation duration of the structure and the staged excavation and retaining was carried out during experiment to simulate actual construction procedures in situ 其次,通過模型試驗研究了土釘與水泥土樁聯合支護型式的變形、破壞形態以及作用原理。試驗模型箱為無蓋六面箱體,內空凈尺寸長寬高為3 . 4m 1 . 0m 2 . 0m ,試驗填料為重塑土,土釘采用硬質鋁管。