Grouting structure of prestressed concrete stiffening beam long duct and construction method thereof

A technology of prestressed and stiffened beams, applied in the field of engineering, can solve problems such as inability to obtain effective guarantees, and achieve the effects of convenient construction organization, good effect and remarkable benefits

Pending Publication Date: 2021-01-15
CCCC FOURTH HIGHWAY ENG
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the grouting of prestressed corrugated pipes within 50m can achieve the purpose of grouting through the large-cycl

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
  • Grouting structure of prestressed concrete stiffening beam long duct and construction method thereof
  • Grouting structure of prestressed concrete stiffening beam long duct and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0032]Example one

[0033]Such asFigure 1-Figure 2As shown, a grouting structure for a long channel of a prestressed concrete stiffening beam includes a grout pipe 1, a grout pipe 2, a grout valve 3, a transparent steel wire hose 4, a four-way connector 5, a grout device, and a pump Vacuum machine 9, super-long prestressed tunnel 11 and concrete stiffening beam 12;

[0034]The concrete stiffening beam 12 is provided with an ultra-long pre-stressed channel 11, both ends of the ultra-long pre-stressed channel 11 are provided with grouting holes 10, and the upper ends of the grout pipe 1 and the grout pipe 2 are both Connected to the outside world, the lower ends of the grout pipe 1 and the grout pipe 2 both pass through the concrete stiffening beam 12 and communicate with the ultra-long prestressed tunnel 11, and the grout pipe 1 is provided with a stop Slurry valve 3;

[0035]There are multiple slurry supplement pipes 1, two slurry pipes 2, and two ports of the four-way connector 5 pass throu...

Example Embodiment

[0046]Example two

[0047]A construction method of a grouting structure for a long channel of a prestressed concrete stiffening beam, comprising the following steps:

[0048]Step 1: Before vacuuming, close all the anti-slurry valves 3, when vacuuming, open the four anti-slurry valves 3 on the four-way connector 5, and then close the anti-slurry valves on the external interface 3. Turn on the vacuum machine 9 to vacuum;

[0049]Step 2: When the vacuum pressure reaches the control value, simultaneously open the two squeezers 8 and open the stop valve 3 on the squeezing connecting pipe 6 for squeezing;

[0050]Step 3: During the grouting process, open the stop valve 3 on the grouting pipe 1 from both ends of the concrete stiffening beam 12 to the mid-span direction, and check the grouting condition. When the slurry filling pipe 1 reaches a certain transparent steel wire hose 4, immediately close the anti-slurry valve 3 connected to the interface of the transparent steel wire hose 4;

[0051]Step 4: W...

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
Lengthaaaaaaaaaa
Login to view more

Abstract

The invention provides a grouting structure of a prestressed concrete stiffening beam long duct and a construction method thereof. The grouting structure comprises a grout supplementing pipe, grout discharging pipes, grout stopping valves, transparent steel wire hoses, a four-way connector, grouting devices, a vacuumizer, an ultra-long prestressed duct and a concrete stiffening beam, wherein the ultra-long prestressed duct is arranged in the concrete stiffening beam, grouting holes are formed in the two ends of the ultra-long prestressed duct, a grout stop valve is arranged on the grout supplementing pipe, two connectors of the four-way connector communicate with the two grout discharging pipes through the two transparent steel wire hoses respectively, in the other two connectors of the four-way connector, one connector communicates with the vacuumizer through the transparent steel wire hose, the other connector communicates with the outside through the transparent steel wire hose, four connectors of the four-way connector are provided with a grout stop valve respectively, and the two grouting devices communicate with the two ends of the ultra-long prestress duct respectively. Thegrouting structure can ensure the compactness of grouting.

Description

technical field [0001] The invention relates to the technical field of engineering, in particular to a grouting structure for a long channel of a prestressed concrete stiffened beam and a construction method thereof. Background technique [0002] As one of the most important links in post-tensioned prestressed concrete components, channel grouting directly affects the safety and durability of bridges and components during use. Since the prestressed channel is not in a horizontal state in many cases, if the grouting of the channel is not dense or there are defects, the prestressed steel beam may break away from the package of the grouting material, which will cause the corrosion of the prestressed tendon, which greatly determines the quality of the bridge. load capacity and service life. [0003] At present, the grouting of prestressed corrugated pipes within 50m can achieve the purpose of grouting through the large cycle grouting process, but how to ensure the compactness o...

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): E04G21/04E04C3/26
CPCE04C3/26E04G21/0418
Inventor 马利刚弥毅刚张克胜刘宇峰王海涛陈志强王继平高硕良高威威胡庆康
Owner CCCC FOURTH HIGHWAY ENG
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