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

Ultrasonic testing method for subway diaphragm wall construction quality

A technology for underground diaphragm walls and construction quality, which is applied in foundation structure engineering, foundation structure testing, construction, etc., to achieve the effect of ensuring accuracy and feasibility and increasing speed

Inactive Publication Date: 2018-11-27
CHINA RAILWAY SIXTH GRP TAIYUAN RAILWAY CONSTR +3
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a construction method for ultrasonic detection of underground diaphragm walls in subways. This construction method prevents the occurrence of undetectable or inaccurate detection data caused by improper pre-embedded acoustic measurement tubes, and saves the increased construction costs due to detection.

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
  • Ultrasonic testing method for subway diaphragm wall construction quality
  • Ultrasonic testing method for subway diaphragm wall construction quality
  • Ultrasonic testing method for subway diaphragm wall construction quality

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] In conjunction with the accompanying drawings, the key points of each operation of this construction method will be described in detail.

[0021] Layout of acoustic tube:

[0022] The length of a piece of subway ground connection wall is generally 6m. At present, 4 acoustic tubes are generally arranged in the ultrasonic inspection of the ground connection wall on the construction site in a "Z" or rectangular arrangement. The "Z" shape layout is as follows: figure 1 As shown, the rectangular layout is as follows figure 2 shown. By analyzing the layout of the above-mentioned acoustic tubes, it can be found that the current ultrasonic ground wall integrity detection of the subway has the biggest disadvantage: since the length of a ground wall is generally 6m, the ultrasonic detection distance generally does not exceed 2.5m , arrange the acoustic tubes in the above way, because the diagonal distance of the acoustic tube plane is too large, resulting in the inability to d...

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 belongs to the field of subway underground continuous wall integrity testing, in particular to an ultrasonic testing method for subway underground continuous wall construction quality, comprising the following steps: (1) precast underground continuous wall reinforcement cage; (2) Arrangement of acoustic measuring pipes: two rows of acoustic measuring pipes are arranged on the reinforcing bar cage, the number of each row of acoustic measuring pipes is 3, and each row of acoustic measuring pipes is arranged separately at even intervals, and 6 acoustic measuring pipes are arranged in total on each ground connecting wall; 3) lower that reinforcement cage and carrying out concrete pour on the underground continuous wall; (4) dredging, injecting water and sealing the acoustic measuring pipes; (5) placing transducers in each acoustic measuring pipe so that the measuring points of each transducer in each acoustic measuring pipe are on the same horizontal plane; (6) Detection anddata processing. For the construction test detection, the construction method ensures the rationality and feasibility of the test detection, improves the speed of the test detection, and provides a guarantee for the construction quality.

Description

technical field [0001] The invention belongs to the field of integrity detection of subway underground diaphragm walls, in particular to a method for ultrasonically detecting the construction quality of subway underground diaphragm walls. Background technique [0002] The underground diaphragm wall is a foundation project. On the ground, a groove forming machine is used to excavate a narrow and long deep groove along the peripheral axis of the deep excavation project under the condition of mud retaining wall. After the groove is cleaned, a steel cage is placed in the groove. Then use the conduit method to fill the underwater concrete to build a unit tank section, so that it is carried out section by section, and a continuous reinforced concrete wall is built underground. The functions of the underground diaphragm wall are: ①retaining soil; ②as a support for heavy objects; ③water interception; ④anti-seepage. Therefore, the quality of the wall concrete is very important. If t...

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 Applications(China)
IPC IPC(8): E02D33/00
CPCE02D33/00
Inventor 贾建兵张超兵郝利斌高山刘艳龙霍志刚李玉平张晶晶张凯张鑫鑫郭峰张佳琪贾美玲杨培勇马占洲吕亮杜艳兵王东岩赵新平李季郭伟宏王佳宁
Owner CHINA RAILWAY SIXTH GRP TAIYUAN RAILWAY CONSTR
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