在复杂的交通负载下,形座椅基础的机械响应设计
Dong Xia1, Guanguo Liu1, Dingxin Zhang2,3
1JSTI GROUP Co., Ltd., Nanjing, Jiangsu, China.
PloS one
|December 22, 2025
概括
这项研究模拟了交通负载下的长跨桥梁的座椅架构. 关键发现揭示了特定基础区域的应力度,这对于优化增强和监测设计至关重要.
科学领域:
- 土木工程 土木工程是指土木工程.
- 地质技术工程 地质技术工程
- 结构工程 结构工程
背景情况:
- 在复杂的交通负载下,在超长跨度桥中座基础的机械反应仍然不完全理解.
- 了解这些反应对于确保桥梁安全和寿命至关重要.
研究的目的:
- 为大型门桥开发一个门座椅基础的现场规模的三维有限元素模型 (3D FEM).
- 分析基础在各种复杂的交通负载下的机械反应.
- 确定加强和监测的关键领域.
主要方法:
- 基于现实世界大型门桥项目开发一个现场规模的3D FEM.
- 模拟复杂的交通负载,包括温度梯度,制动力和风力负载.
- 详细分析应力分布,堆载荷转移以及周围岩石的应力-应变行为.
主要成果:
- 最大拉力应力集中在门支柱盖和门弹之间的连接区域.
- 拉力在垂直堆顶部最高,在堆头部曲时刻最大.
- 塑料压力和沉积物集中在形弹,盖子和主梁的相互连接区域.
结论:
- 强化设计的优化对于形弹,盖子和主梁连接至关重要.
- 长期的压力和应变监测对于早期发现潜在问题至关重要.
- 对于微裂纹的启动和疲劳传播的缓解策略对于结构完整性是必要的.
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