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相关概念视频

Design Example: Alignment of a Road Line Using GIS01:17

Design Example: Alignment of a Road Line Using GIS

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The alignment of a road line using Geographic Information Systems (GIS) is a critical process in civil engineering, combining advanced technology with practical decision-making. This methodology begins with the collection of geospatial data, including information on land cover, geomorphology, drainage patterns, slope, and contour details. Such data is typically acquired through satellite imagery and GIS tools, offering a comprehensive understanding of the terrain.Once the data is gathered, it...
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Typical Model Studies01:30

Typical Model Studies

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Fluid mechanics model studies often utilize scaled-down systems to predict fluid behavior in full-scale environments, such as river flows, dam spillways, and structures interacting with open surfaces. Maintaining Froude number similarity in river models is crucial, as it replicates surface flow features like wave patterns and velocities.
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Modeling and Similitude01:12

Modeling and Similitude

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Scaled modeling is a fundamental technique in engineering, enabling the study of large and complex systems by creating smaller, manageable replicas that recreate critical characteristics of the original. In hydrology and civil infrastructure, for example, scaled models of dams help analyze water flow, turbulence, and pressure. This method allows for accurate predictions of real-world behavior within a controlled environment, significantly reducing the cost and time involved in full-scale...
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Design Example: Strain Gauge Bridge or Wheatstone Bridge01:15

Design Example: Strain Gauge Bridge or Wheatstone Bridge

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The utilization of strain gauges as transducers for converting mechanical strain into electrical signals is a common practice in various engineering applications. These strain gauges are frequently integrated into Wheatstone bridge circuits to accurately measure parameters such as force or pressure. Within this context, each element within the circuit exhibits a resistance that undergoes subtle variations when subjected to mechanical strain. The primary objective is to convert minuscule...
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Rapidly Varying Flow01:24

Rapidly Varying Flow

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Rapidly varying flow (RVF) in open channels is characterized by abrupt changes in flow depth over a short distance, with the rate of depth change relative to distance often approaching unity. These flows are inherently complex due to their transient and multi-dimensional nature, making exact analysis difficult. However, approximate solutions using simplified models provide valuable insights into their behavior.Key Features of Rapidly Varying FlowRVF is commonly observed in scenarios involving...
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Vertical Curve: Problem Solving01:23

Vertical Curve: Problem Solving

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Vertical curves provide the transition between two roadway grades, ensuring safety, comfort, and functionality. Calculating elevations at specific stations along the curve involves several systematic steps based on the curve's geometry and provided design parameters.The vertical curve is defined by its length, grades, Point of Vertical Intersection (P.V.I.) location, and P.V.I. elevation. The stations of the Point of Vertical Curvature (P.V.C.), where the curve begins, and the Point of Vertical...
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相关实验视频

Updated: Jul 4, 2025

Simulation of Human-induced Vibrations Based on the Characterized In-field Pedestrian Behavior
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使用精确的3D道路表面分析进行车辆-桥梁交互建模.

Maja Kreslin1, Peter Češarek2, Aleš Žnidarič1

  • 1Department of Structures, Slovenian National Building and Civil Engineering Institute, Dimičeva ulica 12, 1000 Ljubljana, Slovenia.

Sensors (Basel, Switzerland)
|January 26, 2024
PubMed
概括

本研究介绍了一种测量3D路面和模拟车辆与桥梁相互作用的方法. 这有助于提高桥梁运动称重 (B-WIM) 系统的准确性,因为它会考虑道路的不均性.

关键词:
桥车辆相互作用激光扫描扫描 激光扫描数字建模 数字建模道路的粗程度 道路的粗程度

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相关实验视频

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科学领域:

  • 土木工程 土木工程是指土木工程.
  • 结构动力学 结构动力学
  • 运输工程 运输工程

背景情况:

  • 道路表面的不规则会对车辆与桥梁的动态相互作用产生重大影响.
  • 这些道路不均是桥梁运动称重系统 (B-WIM) 错误的主要原因.
  • 准确的建模需要对道路表面特征有精确的了解.

研究的目的:

  • 开发一种用于测量3D路面的方法.
  • 创建一个数值模型,模拟车辆通过桥梁,并测量路面.
  • 分析影响B-WIM系统准确性的因素,特别是道路不均.

主要方法:

  • 利用静态地面激光扫描进行3D路面测量.
  • 开发了一个数值模型来模拟车辆与桥梁的动态相互作用.
  • 评估了考虑各种参数 (车辆类型,速度,路面,桥梁类型) 的时间域应变反应.

主要成果:

  • 成功模拟了车辆通过一座桥,并测量了道路表面.
  • 该模型允许在任何桥梁位置评估时间域应变反应.
  • 在真实桥上的初步验证显示了模拟和测量桥响应之间的有希望的一致性.

结论:

  • 拟议的方法提供了一个强大的方法来理解道路表面对B-WIM的影响.
  • 这有助于对影响B-WIM准确性的因素进行详细分析.
  • 对道路不平坦对B-WIM系统的影响进行进一步调查是有必要的.