柔性基础是指用抗拉、抗压、抗弯、抗剪均较好的钢筋混凝土材料做基础（不受刚性角的限制）。用于地基承载力较差、上部荷载较大、设有地下室且基础埋深较大的建筑。当刚性基础的尺寸不能满足地基承载力和基础埋深的要求时， 则需采用柔性基础， 即钢筋混凝土基础。钢 筋混凝土基础由于配置有钢筋， 因而具有较好的抗剪能力和抗弯能力。当外 荷载较大且存在弯矩和水平荷载、同时地基承载力又低时， 宜采用钢筋混凝土基础。
刚性机器和柔性基础 Rigid machine and flexible base
Directed against the composite formed by the powder deep mixing piles under the embankment, the paper puts forward the flexible foundation composite ground.
针对路堤下粉喷桩复合地基工程，本文提出了柔性基础复合地基概念。
参考来源 - 柔性基础复合地基性状研究Because the rigidity of embankment is comparatively smaller, it can be called composite foundation under flexible base.
由于路堤的刚度相对较小，因此可以称为柔性基础下复合地基。
参考来源 - 柔性基础下刚性长短桩复合地基试验研究Results show that the analytical solution can accurately reflect the working behavior of the composite ground under a flexible foundation. Calculated settlement precision by the analytical solution is higher than that by the composite modulus method.
结果表明:该解析解能较准确地反映柔性基础下复合地基的工作性状,沉降计算精度较复合模量法高;系统各因素对荷载传递规律都有不同程度的影响,必须重视系统上下部共同作用的深入研究。
参考来源 - 柔性基础复合地基的荷载传递规律The methods proposed in this dissertation,can meet the requirement of decreasing vibration and noise for flexible base,and have some practicability and reference value.
本文所提出的方法，能够满足柔性基础减振降噪的要求，具有一定的实用性和参考价值。
参考来源 - 柔性基础上设备的振动噪声控制技术研究·2,447,543篇论文数据，部分数据来源于NoteExpress
本文以均匀粘弹性简支梁作为梁形柔性基础的力学模型。
The viscoelastic simple beam is taken as the mechanical model of flexible foundation with beam-wise.
为研究方便，将路堤下桩体复合地基称为柔性基础下桩体复合地基。
In order to conveniently research, pile composite foundation under embankment is called pile composite foundation under flexible basement.
柔性基础下复合地基应用相当广泛，但其沉降变形计算理论尚待进一步研究。
The application of a composite foundation under flexible base slab is quite extensive; yet its theory of calculating settlement deformation needs to be further researched.
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