垂直压力轴承的性能和优化设计方法大直径手工挖掘的岩石插座造堆
Xiangmei Zhao1, Nan Yan2, Xiaoyu Bai1
1School of Civil Engineering, Qingdao University of Technology, 777 Jialingjiang Road, Qingdao, 266520, Shandong, China.
Scientific reports
|August 30, 2023
概括
大直径的岩石插座堆表现出出色的弹性性能和最小的沉积,主要作为摩擦堆. 它们的承载能力可以通过修改基于现场测试数据的设计方程来提高.
科学领域:
- 地质技术工程 地质技术工程
- 基金会工程工程基金会工程
- 土壤力学 土壤力学
背景情况:
- 在基础设施项目中,直径较大的岩石接造堆对基础设施项目至关重要.
- 了解它们的垂直压力轴承特性对于安全高效的设计至关重要.
研究的目的:
- 为了研究直立压力轴承的行为大直径的岩石插座造在位堆.
- 提出一个优化的设计方法,并修改这些堆的现有计算方程.
主要方法:
- 在现场对八个手工挖掘的进行了垂直压力负荷和应力测试.
- 分析了负载-位移 (Q-s) 曲线,结算,卸载反弹率和轴向力分布.
- 引入摩擦系数 (η) 和总阻系数 (ζ) 进行分析.
主要成果:
- 堆表现出缓慢的负载位移曲线,沉积小于11毫米和弹性特性 (55-75%反弹).
- 最大的堆侧摩擦发生在适度天气的泥泥石中.
- 末阻力与L/D比率和岩石嵌入深度相反相关.
- 堆边摩擦在最大负载时占阻力的86%,将它们归类为摩擦堆.
结论:
- 这项研究证实了大直径的岩石接堆作为摩擦堆的有效性.
- 基于经验数据和中国代码,建议对这些堆进行修订的计算方程和优化设计方法.
- 这些发现有助于更准确,更有效地设计岩石底的基础.
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