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Monitoring of Ground-Borne Vibrations from Construction and Demolition

Ground-Borne Vibration can be a serious concern for any building or structure within or adjacent to a construction zone. These structures may be potentially impacted by vibrations emanating from construction activities such as demolition, compaction, excavation, blasting, pile-driving, and operating heavy earth-moving equipment. In extreme cases, the vibration can cause damage to adjacent buildings and create discomfort and annoyance for building occupants. This is a particular concern to heritage structures and vibration-sensitive facilities such as hospitals, research laboratories, MRIs, and laser eye technology centers. This article provides a brief review to Ontario Building Code, with respect to Regulation of Vibrations from Construction Activity.

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在建设期间监测振动

作为的一部分安大略省建筑规范, Toronto is one of the first cities in North America that mandates评估与建筑相关的振动确保满足最低建筑标准。该规则旨在最大限度地减少地面振动对相邻建筑物和结构的不利影响“振动影响区“

桩施工 - 钻井

建造activity shall not be carried on when the records show the measured vibration exceeds theProhibited Construction Vibration Levelsset out in Table below.

根据多伦多市政代码 - 第363章 - 建筑施工和拆迁

  • Frequency of Vibration- “在一秒钟内发生的振荡速率,在赫兹中测量,其中一个赫兹每秒等于一个周期。”

  • Vibration Peak Particle Velocity- “在地面上测量的粒子位移时间的最大变化率,并且速度幅度以毫米每秒从零到峰值幅度给出。”

Zone of Vibration Influence

To prevent unnecessary disputes between developers and residents, an assessment can be undertaken prior to construction activities to identify the area surrounding the site that may be subject to vibrations (Zone of Vibration Influence)。本研究将决定面临的数量g structures that need to be surveyed by way of a pre-construction inspection for existing flaws such as foundation cracks, drywall cracks, etc. before construction begins and/or identify the number of houses, if any, that require vibration monitoring during construction.

There are variousparametersthat are involved in identifying the zone of influence which should be identified by a professional engineer. Examples include:

  • 振动源的精确位置
  • 建筑工地和邻近土地的土壤条件
  • 拟议的建筑是否将在水位上方或下方

根据多伦多市政代码 - 第363章 - 建筑施工和拆迁

  • Zone of Influence- “施工现场内或附近的土地面积,包括任何建筑物或结构,可能可能受到从接收点测量的峰值粒子速度的施工活动产生的振动等于或大于五个MM / SEC在任何频率或专业工程师识别特定场地条件的更大区域。“

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11关于“从建设与拆迁地面振动监测”的思考

  1. Is there any standard / code / literature / guidelines which gives the limiting values of permitted vibrations due to any kind of vibrations for various types of structures like residential, industrial, hospitals, bridges, and for types pf constructions like steel structures or RCC buildings.

    We typically get the inquiries, that client wants to know whether the vibration created by D G Set kept over a slab in a residential building or vibrations created by various machine on Industrial floors are safe or within limit or not, for the particular member or for the entire building

    您是否可以建议文献对民用结构的振动测量和分析的良好参考

  2. 它是关于从施工和拆迁监控地面承载振动的美好文章。我非常乐意遇到这个非常好的书面内容。感谢您将来分享和寻找更多!伟大的积分!!我喜欢这个博客;请继续更新我们的信息。

  3. A construction claim can be produced when a party requests compensation not anticipated in terms of the original contract or the contractor’s failure to meet contractual terms. We know that there are some instances where things beyond our control happen, and for that, you must be ahead of everything. One way to prevent construction claims is to have a well-written contract.
    你也可以读我的博客防止施工索赔的简单步骤
    谢谢你。

  4. I just read your article about the new construction regulation in Toronto for ground-borne vibrations. It’s an interesting topic and I appreciate you taking time to share this valuable information.

  5. I can understand how a company could really benefit from monitoring their site to ensure that there isn’t any damage caused. Making sure that they can get some help from a professional could allow them to be safer. It was interesting to learn about how they should find any cracks in the drywall, and foundation with an inspection before the construction begins.

  6. I just finished reading your post on. I am an engineer who specializes in ground borne vibration monitoring and mitigation through pre-construction surveys. Your article made me think of another important point that many people are not aware of – Zone of Vibration Influence (VOI).

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