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

Tunnel cast-in-place concrete lining anti-seismic property testing method

A technology of seismic performance and test method, which is applied in vibration testing, testing of machine/structural components, measuring devices, etc., can solve the problem that it is difficult to directly test the seismic performance of cast-in-place concrete linings, and achieve the effect of good seismic performance.

Inactive Publication Date: 2013-12-25
SHANDONG UNIV OF SCI & TECH
View PDF7 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limitations of various conditions, there is no experimental method that can meet the above requirements, so it is difficult to directly test the seismic performance of cast-in-place concrete lining

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
  • Tunnel cast-in-place concrete lining anti-seismic property testing method
  • Tunnel cast-in-place concrete lining anti-seismic property testing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] combined with figure 1 , the basis of the present invention is that a large part of the tunnels currently under construction adopt circular or quasi-circular cross-sections. Under the condition that the horizontal pressure and vertical pressure of the surrounding rock are not much different, the stress, deformation and The failure problem can be considered approximately as an axisymmetric problem, and a part of it can be tested to reflect the overall properties of the cast-in-place concrete lining.

[0021] combined with figure 2 , a method for testing the seismic performance of a tunnel cast-in-place concrete lining, characterized in that it comprises the following steps:

[0022] Make the cast-in-place concrete lining partial test piece 1, and apply lubricating material on its side, to reduce the frictional force received in its experiment process; Described cast-in-place concrete lining partial test piece, the upper and lower surfaces are coaxial arc surfaces, T...

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 tunnel cast-in-place concrete lining anti-seismic property testing method. The method is characterized by comprising the following steps: manufacturing a cast-in-site concrete lining local test-piece; installing the cast-in-site concrete lining local test-piece into a purpose-made test-piece loading box; applying static load to the test-piece loading box through a static force loading system; installing the test device onto a vertical electro-hydraulic servo drive type seismic modeling vibration table and inputting vibration load; sequentially unloading the vibration load and the static load, and recording damage conditions of the test-piece so as to estimate the anti-seismic property of the test-piece. According to the method, the actual stress state of cast-in-place concrete lining is simulated through the special loading mechanism, and an existing earthquake modeling vibration table is combined to test the anti-seismic property of the local test-piece, so that the overall anti-seismic property of a circular or a quasi-circular tunnel cast-in-place concrete lining structure can be better reflected. Compared with a whole fracture surface experiment, the method greatly saves experiment cost due to the fact the cast-in-place concrete lining local test-piece is used for test.

Description

technical field [0001] The invention relates to the research on the anti-seismic performance of the tunnel support structure, in particular to a method for testing the anti-seismic performance of the cast-in-place concrete lining of the tunnel. Background technique [0002] With the implementation of the western development strategy, a large number of tunnel projects under construction of roads, railways and hydropower will be built near active faults and high-intensity earthquake areas. For example, there are tens of thousands of railway tunnels in my country, of which nearly a thousand are located in strong earthquake areas, and their seismic safety is a matter of great concern to engineering designers. [0003] In order to reduce disasters caused by earthquakes, the seismic performance of support structures should be fully considered in tunnel support design. Cast-in-place concrete lining, as a commonly used support structure in underground engineering, often suffers fro...

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): G01M7/02
Inventor 蒋宇静吴学震王刚
Owner SHANDONG UNIV OF SCI & TECH
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