A cement concrete pavement health monitoring sensor fixing device

A technology for cement concrete and health monitoring, applied in roads, road repairs, roads, etc., can solve the problems of cumbersome operation, time-consuming, general versatility, reliability and stability, etc., to simplify the size and form of the device, and improve coordination and deformation Ability, the effect of solving the problem of cable redundancy

Active Publication Date: 2015-08-19
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Existing problems: The existing pavement structure monitoring is mainly aimed at some test roads or full-scale indoor tests. The installation of sensors is mainly based on simple bracket structures. Paste at specified location
Due to the different types and structures of sensors in each test, these brackets have various forms, most of which are manually fixed, and the operation is cumbersome, requiring very meticulous work ability and strict protection
Since the structure of the stent itself has not been carefully screened and demonstrated, there are major problems in its versatility, reliability, and stability.
At the same time, the sensor fixing process requires a lot of manual operations, including point fixing, drilling, fixing, finding the height, determining the sensor orientation, binding, etc., which is very time-consuming. At the same time, human factors have a great impact on the installation results and cannot be promoted.
Moreover, these brackets themselves have a single purpose, and a single bracket is mostly used to fix a sensor. For areas with a large demand for information, the sensors are densely arranged, and it is difficult to comprehensively utilize a single type of bracket.
Due to the interlacing of brackets and cables, a large number of appendages have an impact on the measurement object (concrete structure), which is not conducive to structural safety on the one hand, and makes the measurement results less convincing
[0010] On the other hand, the pouring process in the construction of concrete pavement is very fast and extensive. The concrete pouring in the indoor test or test road is not the actual construction process and technology. have been modified, so the existing method cannot be used for large-scale construction

Method used

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  • A cement concrete pavement health monitoring sensor fixing device
  • A cement concrete pavement health monitoring sensor fixing device
  • A cement concrete pavement health monitoring sensor fixing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0093] Example 1 (precise and deep laying of thick road surface at the airport):

[0094] Such as Image 6 As shown, a new main runway health monitoring project in an airport, the monitoring items include: the horizontal strain of the top and bottom of the board at the designated point, the temperature gradient in the middle and corner of the board, the sensors are all electrical signal equipment, and the cables are 4-core armored. The diameter is 5mm, and the gauge length of the sensor is 4-6cm. The sensor layout plan takes concrete slabs as units, and is evenly distributed in the direction parallel and perpendicular to the main runway. The slab is the comprehensive information capture position. The project requires installation and construction: 1. As an airport pavement project, the pavement structure must be guaranteed to the greatest extent Safety; 2. The sensor cable must be connected through the internal pipeline of the base layer, and the cable cannot be left in the w...

Embodiment 2

[0096] Example 2 (large-span, distributed, rapid laying of expressways):

[0097] A high-grade highway health monitoring project, the project goal is to evaluate the service life of the pavement under heavy traffic, the monitoring objects include: the horizontal strain of the top and bottom of the slab, and the vertical strain of the concrete slab. The sensor adopts fiber grating technology, and the gauge length is 3-5cm. Project requirements: 1. In order to capture the driving speed information, the strain gauges must be arranged in a distributed manner, such as Figure 7 as shown; 2, such as Figure 8 As shown, in order to capture the wheel track information, the spacing of the vertical strain gauges is 10cm perpendicular to the driving direction. 3. In order to ensure the construction period, it is required that the sensor installation project cannot affect the pavement pouring process, that is, the concrete construction and the sensor embedding are carried out simultaneo...

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Abstract

The present invention relates to the field of concrete pavement structure health monitoring, particularly to a fixing device for cement concrete pavement health monitoring sensors, used for modular installation of the structure monitoring sensors rapidly and accurately. The present invention provides a fixing device for cement concrete pavement health monitoring sensors, comprising a base, a cylindrical tube and multifunctional rings. The cylindrical tube is located on the base vertically; the multifunctional rings are in lapped connection with the lateral outside the cylindrical tube; the multifunctional rings are equipped with a plurality of sensor installation beams. The sensor fixing device provided by present invention can position sensors precisely, with the advantages of easy and effective fixing way, simple fixing device structure, intensity meeting the standard, economical and reasonable materials, functional diversification, etc.

Description

technical field [0001] The invention relates to the field of concrete pavement structure health monitoring, in particular to a cement concrete pavement health monitoring sensor fixing device, which is used for fast and accurate modular installation of structure monitoring sensors. Background technique [0002] Demand analysis: Concrete pavement has always been a very common structural form in the field of roads and airports because of its reliability and durability. With the continuous increase of traffic load and the diversification of load forms, more serious challenges are presented to the design method and maintenance method of concrete pavement structure. Taking civil airports as an example, by the end of 2011, my country had 180 transport airports. According to the "Twelfth Five-Year Plan for China's Civil Aviation Development", by 2015, there will be more than 230 transport airports in my country. Corresponding to the vigorous development of the aviation industry, on...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01C23/01
Inventor 凌建明赵鸿铎袁捷吴璨杨戈刘子钲
Owner TONGJI UNIV
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