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Bridge health monitoring supporting base and monitoring method thereof

A bridge health monitoring and support technology, which is applied in bridges, bridge parts, bridge construction, etc., can solve problems such as short service life, poor measurement accuracy, and expensive manufacturing costs, and achieve difficult processing technology, high yield rate, and good quality. low rate effect

Pending Publication Date: 2017-08-18
CHINA RAILWAY DESIGN GRP CO LTD +1
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Problems solved by technology

Some are used well, but the manufacturing cost is expensive. Due to the limitation of power supply, the overall calibration is required, and it cannot be widely promoted (such as the height-adjusted force-measuring basin rubber bearing disclosed in Chinese utility model patent 200420085431.4); some force-measuring bearings are relatively expensive Low, but the structure is complex, the measurement accuracy is poor, the service life is short, the sensor is difficult to replace, and even affects the overall performance of the support; some require multiple sensors to solve the inaccurate force measurement caused by the change of the rotation angle

Method used

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  • Bridge health monitoring supporting base and monitoring method thereof
  • Bridge health monitoring supporting base and monitoring method thereof

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Embodiment 2

[0030] refer to figure 2 , this embodiment is improved on the basis of Embodiment 1. A spherical liner 11 is arranged in front of the middle liner 3 and the upper support plate 1 . The Poisson's ratio of the elastic layer 4 is between 0.45-0.5 (Poisson's ratio, the ratio of the absolute value of the transverse normal strain to the axial normal strain when the material is under unidirectional tension or compression). The elastic layer with this characteristic can not only transmit the vertical force reliably, but also deform to ensure that the upper surface of the oil chamber is evenly stressed.

[0031] The invention utilizes oil pressure to directly detect the vertical stress of the bridge support, the process of force measurement is easy to realize, and the support structure is simple and easy to process. Using the switching circuit to measure the deflection of the bridge has low cost, and at the same time eliminates redundant normal data, reducing the difficulty of data ...

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Abstract

The invention discloses a bridge health monitoring supporting base. The bridge health monitoring supporting base comprises an upper supporting base plate and a lower supporting base plate, a middle liner plate is arranged between the upper supporting base plate and the lower supporting base plate, a basin cavity is formed in the top face of the lower supporting base plate, an oil cavity is formed in the basin cavity, an elastic layer is arranged at the top of the oil cavity, at least two oil ways communicated with the oil cavity are formed in the side face of the lower supporting base plate, any oil way is provided with a pressure sensor, a travel switch is arranged on the lower supporting base plate and provided with a contact, and the contact selectively makes contact with the upper supporting base plate. The bridge health monitoring supporting base is capable of overcoming defects in the prior art, reduces construction complexity of bridge health monitoring and improves bridge monitoring accuracy.

Description

technical field [0001] The invention relates to the technical field of bridge erection, in particular to a bridge health monitoring support and a monitoring method thereof. Background technique [0002] In recent years, with the increase of railway traffic year by year, some bridge bearings have suffered from bearing displacement exceeding the limit, limit pin shearing and other diseases. The bearings on some bridges are relatively damaged, and they have begun to be gradually replaced. At present, some scientific research institutes and manufacturers have carried out some research and development work on force-measuring bearings, and have applied them on bridges. Some are used well, but the manufacturing cost is expensive. Due to the limitation of power supply, the overall calibration is required, and it cannot be widely promoted (such as the height-adjusted force-measuring basin rubber bearing disclosed in Chinese utility model patent 200420085431.4); some force-measuring b...

Claims

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Application Information

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IPC IPC(8): E01D19/04G01L1/00G01B21/32
CPCG01B21/32G01L1/00E01D19/04E01D19/041E01D19/046
Inventor 苏伟田建德王祯王广业贾双双张显宗李文松卢瑞钊
Owner CHINA RAILWAY DESIGN GRP CO LTD
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