Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A pressure testing device and pressure testing method for evaluating road surface smoothness

A pressure testing and flatness technology, applied in the direction of roads, roads, road repair, etc., can solve the problem of few dynamic detection methods, and achieve the effects of vibration uniformity control, low cost, and easy operation.

Active Publication Date: 2019-05-31
SOUTHEAST UNIV
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, for the smoothness of the road surface, the current emphasis is on the static detection of the formed road surface, and there are relatively few dynamic detection methods during the construction process.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A pressure testing device and pressure testing method for evaluating road surface smoothness
  • A pressure testing device and pressure testing method for evaluating road surface smoothness
  • A pressure testing device and pressure testing method for evaluating road surface smoothness

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] The technical solution of the present invention will be further described in detail below in conjunction with the embodiments and the accompanying drawings.

[0022] (1) Principle of stress test

[0023] According to the principle of elastic mechanics, the force of the rubber pad adopts the model of semi-infinite space body subjected to uniform load. Such as figure 1 As shown, the rubber pad is subjected to uniformly distributed unit area pressure P on the horizontal boundary of the rubber pad, the total height h of the two layers of the same rubber pad, and the horizontal deformation boundary condition u x = u y =0, the boundary condition u of the vertical deformation variable on the ground z = u h =0. Since only the deformation in the vertical direction (Z direction) is considered, when the depth of the sensor probe in the rubber pad is z, the deformation and stress of the rubber material at the probe position are respectively:

[0024]

[0025]

[0026] I...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a pressure test device for evaluating the road surface flatness and a pressure detecting method. The pressure test device comprises thin film pressure sensors, multi-channel signal collecting and modulating integrated machines and a computer / server; the thin film pressure sensors are connected with the multi-channel signal collecting and modulating integrated machines through anti-interference cables; when testing is conducted, firstly the pressure test device is placed in an engineering mechanical part, and double layers of rubber blankets are paved in a gap between the engineering mechanical part and a road surface; then round induction zone probes of the thin film pressure sensors are clamped between the double layers of rubber blankets, the channel signal collecting and modulating integrated machines record pressure data of test points where the sensors are located, and the computer / server processes time zone distribution features and frequency zone distribution features of pressure; and finally, a pressure root-mean-square value of each test point is extracted, a pressure value transverse / longitudinal distribution curve of each test point is drawn, and the road surface flatness is further evaluated. The pressure test device for evaluating the road surface flatness and the pressure detecting method are simple and convenient in operation, high in measurement accuracy, and wide in applicability, and have certain perspectiveness in monitoring of dynamic flatness of the road surface.

Description

technical field [0001] The invention relates to a road surface construction testing device and method, in particular to a pressure testing device for evaluating road surface smoothness, and at the same time relates to a pressure testing method. Background technique [0002] Road construction machinery completes the paving, ironing and compaction of the road surface and base course according to the requirements of the width, thickness, camber, flatness and compaction of the road surface. With the rapid development of the economy, the grade requirements for the road surface are also increasing, and the flatness index has gradually reached millimeter-level precision. Pavement roughness refers to the deviation value of the longitudinal unevenness of the road surface to calculate the international roughness index IRI, which is an important evaluation index for road construction acceptance and road condition, and can reflect the longitudinal unevenness of the road surface and driv...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): E01C23/01
CPCE01C23/01
Inventor 张建润殷超李成喜王先根
Owner SOUTHEAST UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com