WO2021046848A1 - 一种建筑抗震支吊架的性能检测方法 - Google Patents

一种建筑抗震支吊架的性能检测方法 Download PDF

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WO2021046848A1
WO2021046848A1 PCT/CN2019/105840 CN2019105840W WO2021046848A1 WO 2021046848 A1 WO2021046848 A1 WO 2021046848A1 CN 2019105840 W CN2019105840 W CN 2019105840W WO 2021046848 A1 WO2021046848 A1 WO 2021046848A1
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hanger
seismic
seismic support
force
time history
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PCT/CN2019/105840
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English (en)
French (fr)
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丁幼亮
丁李
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南京东南建筑机电抗震研究院有限公司
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Priority to PCT/CN2019/105840 priority Critical patent/WO2021046848A1/zh
Publication of WO2021046848A1 publication Critical patent/WO2021046848A1/zh

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/92—Protection against other undesired influences or dangers
    • E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M7/00—Vibration-testing of structures; Shock-testing of structures
    • G01M7/02—Vibration-testing by means of a shake table

Definitions

  • the invention relates to the field of building seismic resistance, in particular to a performance detection method of building seismic support and hanger.
  • the present invention provides a method for detecting the performance of a building's seismic support and hanger.
  • the invention provides a method for detecting the performance of a building seismic support and hanger, including the following steps:
  • Seismic check calculations of the members and nodes of the seismic support and hanger first use the equivalent lateral force method to conduct the seismic check. If the seismic check is passed, it is determined that the seismic performance of the seismic support and hanger is qualified; if the seismic check fails, go further If the time history analysis method is used for the seismic check calculation, the time history analysis method is passed, the seismic performance of the seismic support and hanger is determined to be qualified, and the time history analysis method is not passed, then the seismic performance of the seismic support and hanger is determined to be unqualified.
  • the lateral stiffness detection method is: fixedly connect the seismic support and hanger connector with the tested seismic support and hanger; select and adjust the gear position of the vibration exciter according to the signal of the seismic support and hanger; start the excitation
  • the vibrator forces the seismic support and hanger to vibrate
  • the acceleration sensor detects the acceleration signal of the seismic support and hanger
  • the force sensor detects the force signal of the seismic support and hanger
  • the acceleration time history is obtained according to the acceleration signal detected by the acceleration sensor and the force signal detected by the force sensor
  • Data and force time history data draw acceleration time history curve and force time history curve according to acceleration time history data and force time history data
  • the force-time history curve obtains the force-displacement curve
  • the ascending section of the force-displacement curve is linearly fitted to obtain the curvature of the fitted curve, which is the lateral stiffness K of the seismic support and hanger;
  • step (1) the lateral stiffness detection is realized by the lateral stiffness detection device of the seismic support and hanger.
  • the detection device includes a vibration exciter for generating an exciting force, an acceleration sensor, a force sensor, a seismic support and hanger connector, a data storage device, and a gear position device, and the front end of the vibration exciter is connected with the force sensor through the force sensor.
  • the seismic support and hanger connector is connected, the vibration exciter is equipped with an acceleration sensor, a data storage device and a gear device, and the force sensor and the acceleration sensor are electrically connected to the data storage device;
  • the seismic support and hanger connector is used It is fixedly connected with the tested seismic support and hanger;
  • the force sensor is used to transmit the exciting force generated by the vibration exciter to the seismic support and hanger through the seismic support and hanger connector and detect the seismic support and hanger on the Force signal;
  • the acceleration sensor is used to detect the acceleration signal of the seismic support and hanger;
  • the data storage device is used to obtain and store acceleration time history data and force time history according to the acceleration signal detected by the acceleration sensor and the force signal detected by the force sensor Data;
  • the gear device is used to adjust the gear of the exciter.
  • step (2) the calculation method of the maximum mass Mmax of the pipeline at rated load is as follows: first calculate the seismic support and hanger based on the mass M of the supported pipeline, the linear density ⁇ 0 of the pipeline's own mass, and the load linear density ⁇ 1 of the pipeline during on-site inspection
  • the performance detection method of the earthquake-resistant support and hanger of a building provided by the present invention can not only carry out the detection work conveniently and quickly, but also can adapt to a variety of test conditions, and the detection result is accurate.
  • the performance testing method of building seismic supports and hangers includes the following steps:
  • the lateral stiffness detection method is: fixedly connect the seismic support and hanger connector with the tested seismic support and hanger; select and adjust the gear position of the vibration exciter according to the signal of the seismic support and hanger; start the excitation
  • the vibrator forces the seismic support and hanger to vibrate
  • the acceleration sensor detects the acceleration signal of the seismic support and hanger
  • the force sensor detects the force signal of the seismic support and hanger
  • the acceleration time history is obtained according to the acceleration signal detected by the acceleration sensor and the force signal detected by the force sensor
  • Data and force time history data draw acceleration time history curve and force time history curve according to acceleration time history data and force time history data
  • the force-time history curve obtains the force-displacement curve
  • the ascending section of the force-displacement curve is linearly fitted to obtain the curvature of the fitted curve, which is the lateral stiffness K of the seismic support and hanger;
  • the lateral stiffness detection is realized by the lateral stiffness detection device of the seismic support and hanger.
  • the detection device includes a vibration exciter for generating an exciting force, an acceleration sensor, a force sensor, a seismic support and hanger connector, a data storage device, and a gear device.
  • the front end of the vibration exciter is connected to the seismic support through a force sensor.
  • the vibration exciter is connected with an acceleration sensor, a data storage device and a gear device, and the force sensor and the acceleration sensor are electrically connected with the data storage device;
  • the seismic support and hanger connector is used to connect with the The measured seismic support and hanger are fixedly connected;
  • the force sensor is used to transmit the exciting force generated by the vibration exciter to the seismic support and hanger through the seismic support and hanger connector and detect the force signal on the seismic support and hanger;
  • the acceleration sensor is used to detect the acceleration signal of the seismic support and hanger;
  • the data storage device is used to acquire and store the acceleration time history data and the force time history data according to the acceleration signal detected by the acceleration sensor and the force signal detected by the force sensor;
  • the gear device is used to adjust the gear of the exciter.
  • step (2) the calculation method of the maximum mass Mmax of the pipeline at rated load is as follows: first calculate the seismic support and hanger based on the mass M of the supported pipeline, the linear density ⁇ 0 of the pipeline's own mass, and the load linear density ⁇ 1 of the pipeline during on-site inspection
  • Seismic check calculations of the members and nodes of the seismic support and hanger first use the equivalent lateral force method to conduct the seismic check. If the seismic check is passed, it is determined that the seismic performance of the seismic support and hanger is qualified; if the seismic check fails, go further If the time history analysis method is used for the seismic check calculation, if the time history analysis method is passed, the seismic performance test of the seismic support and hanger is judged to be qualified. If the time history analysis method is not passed, the seismic performance test of the seismic support and hanger is judged to be unqualified.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Architecture (AREA)
  • General Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)

Abstract

本发明提供的一种建筑抗震支吊架的性能检测方法，包括以下步骤：计算抗震支吊架所支撑管道的质量M和抗震支吊架的抗侧刚度K；根据抗震支吊架所支撑管道的质量M计算额定负荷时的管道最大质量Mmax；抗震支吊架杆件和节点的抗震验算。本发明提供的建筑抗震支吊架的性能检测方法不仅能够方便快捷地进行检测工作，而且能适应多种测试情况，检测结果准确。

Description

一种建筑抗震支吊架的性能检测方法 技术领域
本发明涉及建筑抗震领域，具体涉及一种建筑抗震支吊架的性能检测方法。
背景技术
2015年8月1日起国家开始批准实施《建筑机电工程抗震设计规范》(GB50981-2014)，其中，抗震支吊架的抗震设计是规范重要内容之一。抗震支吊架在地震中能对水管、风管等各类建筑机电工程设施给予可靠的保护，承受来自任意水平方向的地震作用。然而，抗震支吊架施工安装完成后如何检测其抗震性能满足规范设计要求，目前缺乏有效的技术手段。《抗震支吊架安装及验收规程》(CECS420：2015)中规定的观察和尺量检查只能进行外观和几何尺寸的检测，无法检测抗震支吊架的抗震性能。
为此，建立抗震支吊架抗震性能的现场检测方法是保障抗震支吊架抗震安全性的关键研究内容。为此，重点需要解决两个问题。首先，需要研究如何准确获取施工现场安装的抗震支吊架的抗震设计参数，包括抗震设计用的管道的质量和抗震支吊架的抗侧刚度。其次，《建筑机电工程抗震设计规范》(GB50981-2014)采用等效侧力法作为抗震支吊架地震作用的基本计算方法。该方法计算简便，然而，等效侧力法计算的地震作用偏大，抗震设计过于保守。另一方面，时程分析法作为地震作用计算方法较为准确，但是计算复杂，工作量较大。
发明概述
技术问题
为了解决现有技术的缺陷，本发明提供了一种建筑抗震支吊架的性能检测方法。
问题的解决方案
技术解决方案
本发明提供的一种建筑抗震支吊架的性能检测方法，包括以下步骤：
(1)计算抗震支吊架所支撑管道的质量M和抗震支吊架的抗侧刚度K；
(2)根据抗震支吊架所支撑管道的质量M计算额定负荷时的管道最大质量Mmax；
(3)抗震支吊架杆件和节点的抗震验算：先采用等效侧力法进行抗震验算，抗震验算通过，则判定抗震支吊架的抗震性能检测合格；如果抗震验算不通过，则进一步采用时程分析法抗震验算，时程分析法抗震验算通过，则判定抗震支吊架的抗震性能检测合格，时程分析法抗震验算不通过，则判定抗震支吊架的抗震性能检测不合格。
步骤(1)中，抗侧刚度检测方法为：将抗震支吊架连接器与被测的抗震支吊架固定连接；根据抗震支吊架的信号选择并调节激振器的档位；启动激振器，强迫抗震支吊架振动，加速度传感器检测抗震支吊架的加速度信号，力传感器检测抗震支吊架的力信号；根据加速度传感器检测的加速度信号和力传感器检测的力信号获取加速度时程数据和力时程数据，根据加速度时程数据和力时程数据绘制加速度时程曲线和力时程曲线；对加速度时程曲线进行二次积分，得到位移时程曲线，根据位移时程曲线和力时程曲线获得力-位移曲线；对力-位移曲线的上升段进行线性拟合，得到拟合曲线的曲率，即为抗震支吊架的抗侧刚度K；
步骤(1)中，所述抗侧刚度检测采用抗震支吊架的抗侧刚度检测装置实现。
优选地，检测装置包括用于产生激振力的激振器、加速度传感器、力传感器、抗震支吊架连接器、数据存储装置和档位装置，所述激振器的正前端通过力传感器与抗震支吊架连接器连接，所述激振器上安装有加速度传感器、数据存储装置和档位装置，所述力传感器和加速度传感器均与数据存储装置电连接；所述抗震支吊架连接器用于与被测的抗震支吊架固定连接；所述力传感器用于将所述激振器产生的激振力通过抗震支吊架连接器传递给抗震支吊架并检测抗震支吊架上的力信号；所述加速度传感器用于检测抗震支吊架的加速度信号；所述数据存储装置用于根据加速度传感器检测的加速度信号和力传感器检测的力信号获取并存储加速度时程数据和力时程数据；所述档位装置用于调节激振器 的档位。
步骤(2)中，额定负荷时的管道最大质量Mmax的计算方法为：首先根据所支撑管道的质量M、管道自身质量的线密度ρ0和现场检测时管道的负荷线密度ρ1计算抗震支吊架所支撑管道的长度L＝M/(ρ0+ρ1)，进而根据管道的额定负荷线密度ρ2计算额定负荷时的管道最大质量Mmax＝(ρ0+ρ2)L。
有益效果：本发明提供的建筑抗震支吊架的性能检测方法不仅能够方便快捷地进行检测工作，而且能适应多种测试情况，检测结果准确。
发明的有益效果
发明实施例
具体实施方式
下面结合实施例，对本发明的具体实施方式作进一步详细描述。以下实施例用于说明本发明，但不用来限制本发明的范围。
建筑抗震支吊架的性能检测方法，包括以下步骤：
(1)计算抗震支吊架所支撑管道的质量M和抗震支吊架的抗侧刚度K；
步骤(1)中，抗侧刚度检测方法为：将抗震支吊架连接器与被测的抗震支吊架固定连接；根据抗震支吊架的信号选择并调节激振器的档位；启动激振器，强迫抗震支吊架振动，加速度传感器检测抗震支吊架的加速度信号，力传感器检测抗震支吊架的力信号；根据加速度传感器检测的加速度信号和力传感器检测的力信号获取加速度时程数据和力时程数据，根据加速度时程数据和力时程数据绘制加速度时程曲线和力时程曲线；对加速度时程曲线进行二次积分，得到位移时程曲线，根据位移时程曲线和力时程曲线获得力-位移曲线；对力-位移曲线的上升段进行线性拟合，得到拟合曲线的曲率，即为抗震支吊架的抗侧刚度K；
步骤(1)中，所述抗侧刚度检测采用抗震支吊架的抗侧刚度检测装置实现。检测装置包括用于产生激振力的激振器、加速度传感器、力传感器、抗震支吊架连接器、数据存储装置和档位装置，所述激振器的正前端通过力传感器与抗震支吊架连接器连接，所述激振器上安装有加速度传感器、数据存储装置和档位装置，所述力传感器和加速度传感器均与数据存储装置电连接；所述抗震支 吊架连接器用于与被测的抗震支吊架固定连接；所述力传感器用于将所述激振器产生的激振力通过抗震支吊架连接器传递给抗震支吊架并检测抗震支吊架上的力信号；所述加速度传感器用于检测抗震支吊架的加速度信号；所述数据存储装置用于根据加速度传感器检测的加速度信号和力传感器检测的力信号获取并存储加速度时程数据和力时程数据；所述档位装置用于调节激振器的档位。
(2)根据抗震支吊架所支撑管道的质量M计算额定负荷时的管道最大质量Mmax；
步骤(2)中，额定负荷时的管道最大质量Mmax的计算方法为：首先根据所支撑管道的质量M、管道自身质量的线密度ρ0和现场检测时管道的负荷线密度ρ1计算抗震支吊架所支撑管道的长度L＝M/(ρ0+ρ1)，进而根据管道的额定负荷线密度ρ2计算额定负荷时的管道最大质量Mmax＝(ρ0+ρ2)L。
(3)抗震支吊架杆件和节点的抗震验算：先采用等效侧力法进行抗震验算，抗震验算通过，则判定抗震支吊架的抗震性能检测合格；如果抗震验算不通过，则进一步采用时程分析法抗震验算，时程分析法抗震验算通过，则判定抗震支吊架的抗震性能检测合格，时程分析法抗震验算不通过，则判定抗震支吊架的抗震性能检测不合格。
以上所述实施例仅表达了本发明的若干实施方式，其描述较为具体和详细，但并不能因此而理解为对发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。

Claims (5)

  1. 一种建筑抗震支吊架的性能检测方法，其特征在于：包括以下步骤：
    (1)计算抗震支吊架所支撑管道的质量M和抗震支吊架的抗侧刚度K；
    (2)根据抗震支吊架所支撑管道的质量M计算额定负荷时的管道最大质量Mmax；
    (3)抗震支吊架杆件和节点的抗震验算：先采用等效侧力法进行抗震验算，抗震验算通过，则判定抗震支吊架的抗震性能检测合格；如果抗震验算不通过，则进一步采用时程分析法抗震验算，时程分析法抗震验算通过，则判定抗震支吊架的抗震性能检测合格，时程分析法抗震验算不通过，则判定抗震支吊架的抗震性能检测不合格。
  2. 根据权利要求1所述的一种建筑抗震支吊架的性能检测方法，其特征在于：步骤(1)中，抗侧刚度检测方法为：将抗震支吊架连接器与被测的抗震支吊架固定连接；根据抗震支吊架的信号选择并调节激振器的档位；启动激振器，强迫抗震支吊架振动，加速度传感器检测抗震支吊架的加速度信号，力传感器检测抗震支吊架的力信号；根据加速度传感器检测的加速度信号和力传感器检测的力信号获取加速度时程数据和力时程数据，根据加速度时程数据和力时程数据绘制加速度时程曲线和力时程曲线；对加速度时程曲线进行二次积分，得到位移时程曲线，根据位移时程曲线和力时程曲线获得力-位移曲线；对力-位移曲线的上升段进行线性拟合，得到拟合曲线的曲率，即为抗震支吊架的抗侧刚度K。
  3. 根据权利要求2所述的一种建筑抗震支吊架的性能检测方法，其特征在于：步骤(1)中，所述抗侧刚度检测采用抗震支吊架的抗侧刚度检测装置实现。
  4. 根据权利要求3所述的一种建筑抗震支吊架的性能检测方法，其特 征在于：检测装置包括用于产生激振力的激振器、加速度传感器、力传感器、抗震支吊架连接器、数据存储装置和档位装置，所述激振器的正前端通过力传感器与抗震支吊架连接器连接，所述激振器上安装有加速度传感器、数据存储装置和档位装置，所述力传感器和加速度传感器均与数据存储装置电连接；所述抗震支吊架连接器用于与被测的抗震支吊架固定连接；所述力传感器用于将所述激振器产生的激振力通过抗震支吊架连接器传递给抗震支吊架并检测抗震支吊架上的力信号；所述加速度传感器用于检测抗震支吊架的加速度信号；所述数据存储装置用于根据加速度传感器检测的加速度信号和力传感器检测的力信号获取并存储加速度时程数据和力时程数据；所述档位装置用于调节激振器的档位。
  5. 根据权利要求1所述的一种建筑抗震支吊架的性能检测方法，其特征在于：步骤(2)中，额定负荷时的管道最大质量Mmax的计算方法为：首先根据所支撑管道的质量M、管道自身质量的线密度ρ0和现场检测时管道的负荷线密度ρ1计算抗震支吊架所支撑管道的长度L＝M/(ρ0+ρ1)，进而根据管道的额定负荷线密度ρ2计算额定负荷时的管道最大质量Mmax＝(ρ0+ρ2)L。
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