Pavement repairing method capable of resolving settlement velocity difference between hard soil and soft soil

A technology for road surface repair and hard soil layer, applied in the direction of road, road, bridge maintenance, etc., can solve problems such as the difference in settlement velocity between hard soil layer and soft soil layer, achieve short curing time, reduce construction time, and avoid bridgehead jumping. Effect

Active Publication Date: 2014-09-17
JIANGSU DINGTAI ENG MATERIAL
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a pavement repair method t

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
  • Pavement repairing method capable of resolving settlement velocity difference between hard soil and soft soil
  • Pavement repairing method capable of resolving settlement velocity difference between hard soil and soft soil
  • Pavement repairing method capable of resolving settlement velocity difference between hard soil and soft soil

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0033] Example 1

[0034] Such as figure 1 As shown, the damaged bridge generally includes: pavement surface 1, slab 2, void 3, bridge surface 4, road surface 5, soft soil layer 6, and hard soil layer 7.

[0035] Void generally occurs between the slab 2 and the soft soil layer 6. The void volume will gradually increase with the settlement of the soft soil layer. Since the soft soil layer 6 is higher than the roadbed, it is convenient to drill the soft soil layer 6 from the side. hole.

[0036] Such as figure 1 -As shown in 3, a road repair method of the present invention includes the following steps:

[0037] (1) Use a three-dimensional detection radar or ultrasonic detection device to detect the void 3 position in the slab of the damaged bridge, mark the void 3 position on the surface of the slab 2, and measure the void 3 and the hard soil layer 7 depth;

[0038] (2) Mark the position of each grouting hole 8 on the surface of the slab 2 above the void 3 and drill holes. The diameter ...

Example Embodiment

[0045] Example 2

[0046] The slurry described in the present invention adopts a high-strength foaming resin whose model is SZ3. The resin is added to the above-mentioned grouting equipment during grouting, and the viscosity of the resin flowing out of the grouting equipment (out-machine viscosity) ) Is 100±45mPa·s. The volume of the resin slurry increases continuously in flow, and its permeability is strong. It is suitable for quickly reaching the void or entering the gap. It is suitable for squeezing out water under pressure. The slurry can be filled and emptied after 3 minutes of injection, and its final strength will be reached after 10 minutes of injection, with its compressive strength ≥20MPa and bending strength ≥15MPa.

[0047] The slurry has the following characteristics:

[0048] (1) The slurry does not contain water, does not produce dry shrinkage, and can be densely filled and void; the slurry is flexible and elastic after curing, and it is not easy to crack. At the same...

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

PropertyMeasurementUnit
Diameteraaaaaaaaaa
Compressive strengthaaaaaaaaaa
Bending strengthaaaaaaaaaa
Login to view more

Abstract

The invention relates to a pavement repairing method. The method comprises the following steps: using radar detection to detect the void position in the slab of s damaged bridge, marking the position of grouting holes 1 on the slab surface of locating and drilling, wherein the grouting holes reach the hard soil and are arranged in array, center distance of adjacent grouting holes is 10-20 cm and the void falls into the array range; penetrating the grouting holes 2 through the soft soil and intersecting with grouting holes 1, and arranging exhaust one-way valves at two ends of each grouting hole 2; grouting into the grouting holes 1 and using three-dimensional radar to detect the slurry grouting condition in the void, grouting holes 1 and grouting holes 2 on a real-time basis, and filling the void, the grouting holes 1 and grouting holes 2 with slurry, and stopping grouting; and after grouting, using detection radar to detect and review the filling portions, and re-drilling and grouting the position without slurry filling. The method solves the problem of settlement velocity difference between hard soil and soft soil.

Description

technical field [0001] The invention relates to a road surface repair method, which can repair the back of the bridge head and eliminate the phenomenon of vehicle jumping at the bridge head. Background technique [0002] With the continuous increase of highway and railway mileage in our country, the proportion of highway structures such as bridges and culverts is increasing. The phenomenon of "bridge head jumping" is common in the backfill of many such structures, so-called "bridge head jumping" It refers to the uneven settlement of bridges, culverts and other structures themselves and the back of the platform due to the effect of driving load and self-weight. The vehicles that pass through the backfill of the platform produce bumps and jumps. [0003] The main reason for the above phenomenon is that generally the bridge deck is higher than the road surface and is connected to the roadbed (hard soil layer) through bridge piers. Therefore, the bridge deck with a height diffe...

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
IPC IPC(8): E01C3/04
CPCE01C11/005E01D22/00
Inventor 宋妍曈陈赞冷一杰
Owner JIANGSU DINGTAI ENG MATERIAL
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap