水填充薄膜沟槽对行驶列车荷载的隔振研究

为了研究水薄膜填充沟槽对于土体的隔振效果,采用模型试验的方法,分析空沟与水填充薄膜沟槽对于土体地表振幅的衰减作用,在模型试验中设置空沟与水填充薄膜沟槽进行对比试验,在本试验条件下,结果表明:空沟与水填充薄膜沟槽均具有良好的隔振效果,空沟较之无隔振措施其隔振效果提高17.9%~55%,水填充薄膜沟槽则提高了14.3%~52.5%,水填充薄膜的隔振效果和空沟效果相近;在深度的变化下,空沟与水填充薄膜沟槽均随着深度增加而增加,由0.2 m沟深增长到0.6 m沟深时,水填充薄膜沟槽的隔振效果提高了27.5%~35.7%。

探讨软基固化处理技术在水运工程中的应用

软土地基固结处理技术是利用现场原有土壤的特殊搅拌设备,将污泥和固结剂混合成具有一定强度的土体,可提高原有基础的承载力,有效减少地基变形和沉降该技术可应用于建筑道路的快速成形、固结土充填薄膜袋的铺设、水的遏制、建筑物背后土压力的降低以及与其他地基处理相结合,形成一种新型的地基处理方式。

Local Tensile Strength of Connection Between H-Steel Beam Flange and Concrete-Filled Circular Column Tube with Through Diaphragm

This paper focused on investigating local tensile strength of connection between steel beam flange and concrete-filled circular column tube with through diaphragm. Three specimens were designed and tested to failure, and the structure behavior was studied by experiment and FEM analysis. On the basis of the results obtained, an estimation for local plastic and ultimate strengths of the connections using yield line theory was attempted, which results in a good prediction.