双重复合堆的承载能力和变形改善了基础:一个参数研究
Youlin Guo1, Xiaocong Cai2, Meixiang Gu2
1Hunan Engineering Research Center of Structural Safety and Disaster Prevention for Urban Underground Infrastructure, Hunan City University, Yiyang 413000, China.
协奏组合堆,结合颗粒和混凝土部分,提高基础承载能力. 优化枕头特性和尺寸可以提高承载能力并减少变形.
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:
- 协奏组合堆集成颗粒状柱 (深) 和混凝土堆 (浅) 以改善土壤稳定性.
- 这种复合方法利用颗粒柱的土壤巩固和密集,以及混凝土的结构强度.
- 解决了常见的颗粒列问题,例如在施工过程中凸起的变形.
研究的目的:
- 为了研究由合复合堆改进的基础的承载能力和变形特性.
- 开发和验证一个合连续-离散数值模型来分析这些复合堆.
- 进行参数研究,评估影响绩效的关键因素.
主要方法:
- 开发一个结合的连续离散数值模型.
- 对数值模型与实验测量的验证.
- 参数分析侧重于缓冲特性,堆特性 (长度,模量,直径,间距) 和土壤模量.
主要成果:
- 减少缓冲厚度和增加缓冲模量可以提高承载能力.
- 深颗粒部分的长度和模量增加提高了承载能力,减少了变形.
- 最佳的堆间距 (直径≥2倍) 是至关重要的;堆模量对承载能力的影响有限.
- 较高的底层土壤模块增加了堆内应力.
结论:
- 双重复合堆提供了一个有效的基础改进技术,通过结合颗粒和混凝土堆的好处.
- 数字建模提供了一种可靠的方法来分析这些复合基础的复杂行为.
- 设计参数如缓冲特性,堆尺寸和间距显著影响性能,需要仔细优化.
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