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Seismic response analysis of flexible pavements embedded with CLSM bases using finite element method

机译：基于CLSM的柔性路面的地震反应有限元分析。

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Dynamic loading other than moving wheel loads such that seismic oscillating excitation plays an important role in flexible pavement design. Controlled low-strength material (CLSM) has widely applied to pavement construction. In this study finite element analysis of seismic responses of four-layered flexible pavements subjected to earthquake excitations is conducted. Four different bases materials including graded crushed stone, CLSM-B80/30%, CLSM-B130/30% and asphalt concrete (AC), are employed for comparison study of the dynamic behavior of the multilayered systems including displacements, velocities and accelerations. Two-dimensional problems are considered and rectangular Q4 elements are employed. Dynamic responses of CLSMs of 1-day, 7-days and 28-days are also studied. Two typical earthquake ground excitations, 1940 El Centro and 1995 Kobe ground accelerations, are employed for synthesis. Numerical results depict that seismic responses of flexible pavements embedded with CLSM bases are better than those using graded crushed stone bases and CLSM can be good base materials for flexible pavements.
机译：动轮载荷以外的动态载荷（例如，地震振动激发）在柔性路面设计中起着重要作用。受控低强度材料（CLSM）已广泛应用于路面施工。在这项研究中，进行了地震激励作用下的四层柔性路面地震响应的有限元分析。比较了四种不同的基础材料，包括梯度碎石，CLSM-B80 / 30 \％，CLSM-B130 / 30 \％和沥青混凝土（AC），比较研究了多层系统的动力特性，包括位移，速度和加速度。 。考虑二维问题，并采用矩形Q4元素。还研究了1天，7天和28天CLSM的动态响应。用于合成的是两种典型的地震地面激励，即1940 El Centro和1995 Kobe地面加速度。数值结果表明，嵌有CLSM基层的柔性路面的地震响应要优于使用渐变碎石基层的地震响应，而CLSM可以作为柔性路面的良好基础材料。

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