JP3212443B2 - Seismic strong wind observation method for structures - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for observing a strong wind of a structure applied to observation of an earthquake, a strong wind, etc. acting on a constructed structure.

[0002]

2. Description of the Related Art In recent years, with the rapid increase of large structures such as buildings, towers, high-rise chimneys, bridges, etc., the magnitude and response of earthquakes and strong winds acting on these constructed structures have been reduced for several to several decades. A long-term observation system has been generally adopted. These measured data are used for confirming the safety of the structure and maintaining it, and are used for future seismic and wind resistant design.

FIG. 2 shows an example of a general arrangement of sensors used in this observation system. An anemometer 3a is provided on the roof of a building 1, a seismometer 3b is provided on a foundation, and a building 1 is provided.
A plurality of accelerometers 3c are provided on each floor of the building, and the sensors 3a, 3b, 3c are connected to data recording devices (not shown) installed in the observation room 2 in the building 1 via cables 7, respectively. Have been.

FIG. 3 shows a conventional measurement data recording method in this kind of observation system. Data measured by the sensors 3a, 3b, 3c as described above is:
The measurement data is transmitted to the data recording device 4 ′ in the observation room 2 via the cable 7 and recorded. The measurement data is amplified by the amplifier 6 before being input to the data recording device 4 ′ and then transmitted to the starter 5. .

In the starter 5, the measurement signal a ₁ (wind speed waveform, seismic waveform, etc.) is compared with a separately set reference signal a _0, and as a result, if a ₁ <a ₀ , the starter 5 is turned off. And the data recording device 4 'does not start and therefore its data is not recorded. If a ₁
If ≧ a _0, the starter 5 is Sutatato the "ON" issues a signal data acquisition device 4 ', data has come to be recorded.

[0006]

In the conventional method for observing an earthquake strong wind of a structure, the measurement signal a ₁ is compared with the reference signal a ₀ as described above, and only when a ₁ ≧ a ₀ is used via the starter. The data recording device was activated to record data.

[0007] However, the probability that occurs in reality measurement signal a ₁ is the probability or earthquake blows strong winds of more than an indication signal a ₀ is,
It is extremely low, about once a year or about once every several years, and the data recording device is not operated for a long time.

Therefore, even if any trouble occurs in the data recording device or the like during that time, it is impossible to find out the presence or absence of the failure, the failure content, and the location of the failure because there is no recorded data. For this reason, there has been a problem that the apparatus does not normally operate when an accident or strong wind is encountered, so that data cannot be recorded or valid data is not easily recorded. The present invention seeks to solve the above problems.

[0009]

According to the method for observing an earthquake strong wind of a structure according to the present invention, a plurality of sensors disposed at predetermined positions of the structure constantly measure an external force acting on the structure and its response. its transmits measurement data to the data recording device, with the same data acquisition device for data processing in recording this, point by point comparison with reference values a ₀ set in advance data and measured values a ₁ specific timing, the The data when the result is A ₁ ≧ A ₀ is stored, and the data when A ₁ <A ₀ is discarded.

[0010]

In the above, the plurality of sensors constantly measure the external force acting on the structure and the response of each part, and send the measured data to the data recording device one by one.

The measured data is recorded by a data recording device, and after data processing, the measured value A ₁ is compared with a reference value A _0, and only the measured data when A ₁ ≧ A ₀ is stored. ₁ <the measurement data if A ₀ is discarded. Further, of the above data, data measured at a specific time is also appropriately stored as needed.

In the present invention, since all measurement data is always temporarily stored in the data recording device, the data can be taken out to check the operation status of the sensors and the data recording device, and the normal operation of the device can be confirmed. The state can be maintained.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. In the present embodiment, as shown in FIG. 2, for example, when external force (earthquake, strong wind) acting on the building 1 and the response of each part generated at that time are observed for a long time, for example, several years to several tens years It is applied to.

In the above description, the strong wind is an anemometer 3a provided on the roof of the building 1, the earthquake is a seismometer 3b provided on the foundation, and the response at that time is always provided by a plurality of accelerometers 3c provided on each floor. All of the measured data is sent to and recorded by a data recording device described later installed in the observation room 2 via each cable 7.

FIG. 1 shows an apparatus according to this embodiment.
This will be described with reference to (a) and (b). The device according to the present embodiment shown in FIG. 1A includes sensors 3 provided in each part of a building.
(Anemometer 3a, seismometer 3b and accelerometer 3 in FIG. 2)
c), and the sensor 3 provided in the observation room 2 is formed by a data recording device 4 connected via an amplifier 6 via a cable 7.

The data recording device 4 includes a recording unit 4a (for example, a magnetic tape, a disk, etc.) for recording the transmitted measurement data, a processing unit 4b for analyzing, processing, and storing the recorded data; An identification unit 4c is provided for comparing the processed data (measured value) with predetermined reference values of wind speed and seismic force to identify the magnitude of the reference value.

Next, a method for observing a strong wind according to the present embodiment using the above apparatus will be described below with reference to FIG. Strong winds, earthquakes, and responses of various parts acting on the structure (building 1) are all measured by the sensors 3 throughout the year.

The measured data is stored in the observation room 2 one by one.
To the recording unit 4a
After that, the data are appropriately analyzed and processed by the processing unit 4b, and the measured value A _{1 for} each element, that is, the wind speed υ, the seismic acceleration α, the response acceleration β, the displacement, the stress, and the like are calculated.

Next, each measurement value A ₁ is compared with each preset reference value A ₀ , that is, υ ₀ , α ₀ or β ₀ , in the identification unit 4c. At this time, A ₁ ≧ A ₀ (υ ≧ υ ₀
Or, only when α ≧ α ₀ or β ≧ β ₀ ), the data is adopted and stored / stored in the processing unit 4b or the like. on the other hand,
A ₁ <A ₀ (υ <υ ₀ or α <α ₀ or β <β ₀ )
In this case, the data is rejected and discarded, and the magnetic tape or the like is reused.

The arbitrary data stored / stored in the processing unit 4b is taken out at appropriate intervals, and its contents are checked to confirm whether or not the apparatus is operating normally. If there is, the fault location is repaired by investigating the cause.

By the above-described processing, the data recording apparatus can be always operated normally, whereby the external force acting on the target structure and its response can be measured throughout the year without any leakage. Only the necessary data can be stored. Needless to say, data other than when A ₁ <A ₀ can be appropriately stored as needed, and can be arbitrarily extracted and used.

[0022]

According to the earthquake / strong wind observation method of the present invention, the external force acting on the structure and the response of each part are measured without leakage throughout the year, and all the measured data are appropriately identified after being recorded in the data recording device. By storing only the data at the required time, such as during an earthquake or strong wind, measurement leaks are eliminated, and the above measurement data is taken out at appropriate intervals to check the contents, and to detect and repair equipment failures early. By doing so, the device is always maintained in a state in which it can operate normally, and it is possible to prevent measurement errors.

[Brief description of the drawings]

FIG. 1 is an explanatory view of an embodiment of the present invention, in which (a) is an explanatory view of an apparatus relating to an earthquake strong wind observation method, and (b) is a flowchart of the observation procedure.

FIG. 2 is a layout diagram of sensors provided in a building.

FIG. 3 is an explanatory diagram of a conventional observation method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Building 2 Observation room 3 Sensor 4 Data recording device 4a Recording part 4b Processing part 4c Identification part 6 Amplifier

Claims (1)

(57) [Claims] A plurality of sensors disposed at predetermined locations on a structure constantly measure an external force acting on the structure and its response, and transmit the measured data to a data recording device. This data is recorded and processed, and the data at a specific time and the measured value A are compared with a preset reference value A ₀ one by one, and the data when the result is A ₁ ≧ A ₀ is stored, and A ₁ <seismic strong wind observation method of a structure data is characterized in that it discarded when the a _0.