Modeling method for realizing structural mechanical performance of pipe segment three-dimensional loading

A technology of structural mechanics and modeling methods, applied in 3D modeling, image data processing, special data processing applications, etc., can solve problems such as simplification of mechanical models, idealization of segment stress environment, and inability to obtain limit boundary conditions, etc. achieve the effect of overcoming interference

Active Publication Date: 2017-10-27
CHINA RAILWAY TUNNEL GROUP CO LTD +1
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  • Abstract
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  • Application Information

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Problems solved by technology

However, even if the scientific research results are remarkable, the structural design is still difficult to adopt, and the safety of the structure is still ensured with a high safety factor, resulting in waste of materials
One of the important reasons is that only the segment is selected as the test object in the general indoor test of segme

Method used

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  • Modeling method for realizing structural mechanical performance of pipe segment three-dimensional loading
  • Modeling method for realizing structural mechanical performance of pipe segment three-dimensional loading
  • Modeling method for realizing structural mechanical performance of pipe segment three-dimensional loading

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Embodiment Construction

[0020] Below in conjunction with accompanying drawing and specific implementation process, the embodiment of the present invention is described further:

[0021] Such as figure 1 As shown, the modeling of structural mechanical properties of three-dimensional loaded segments includes stratum remodeling and fabrication, scaled segment model making, segment monitoring system design, realization of different segment load model experiments, and data collection and analysis.

[0022] Such as image 3 , 4 As shown, a loading platform is first established, and the loading platform is a hexahedron structure, including left and right sides, front and rear sides, an upper cover surface, a bottom surface, the left and right sides and the upper cover surface The inner layer is provided with a push plate 9, and the push plate is composed of several push plate units arranged in an array, and a propulsion oil cylinder 4 is vertically arranged on the outside of each push plate unit passing t...

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Abstract

The invention discloses a modeling method for realizing structural mechanical performance of pipe segment three-dimensional loading. The modeling method mainly includes: analyzing and remodeling geological conditions; making a stratum model; making a contraction rule pipe segment model; designing a pipe segment monitoring system; performing different loading model experiments on pipe segments; collecting and analyzing data. By adopting the method, pipe segment structural mechanical characteristic experiments on working conditions of horizontal and vertical different loading, of pipe segment rings, pipe segment axial geostress difference and pipe segment staggering and eccentric loading in different geological environments can be realized, real simulation of pipe segment loading environment is realized through stratum remodeling, pipe segment structure is processed by utilizing gypsum to realize detailed construction of the pipe segment structure, joint screwed connection is realized, annular and longitudinal strain gauges are distributed for whole-ring pipe segments to realize monitoring of internal force of the pipe segments, and technical support is provided for subsequent shield pipe segment assembling and wall posterior grouting parameter setting.

Description

technical field [0001] The invention relates to tunnel projects such as urban subways and highway tunnels that adopt shield construction segment structure lining, and specifically relates to a modeling method for analyzing structural mechanical properties of segments in a three-dimensional loaded environment. Background technique [0002] In recent years, with the development of the economy and the advancement of technology, shield tunnels have been widely used in urban subways, highway tunnels, and cross-river and sea tunnels. The shield tunnel segment lining structure is a tunnel body formed by splicing the segments into a ring through the segment joints, and then connecting the single segment rings into a tubular structure through the inter-ring joints. The segment is in a three-dimensional loaded environment and is the main support structure of the shield tunnel. However, due to the existence of segment joints, the tunnel is prone to problems such as misalignment, openin...

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Application Information

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IPC IPC(8): G06F17/50G06T17/00
CPCG06T17/00G06F30/17
Inventor 周建军孙振川吕乾乾孙振中杨振兴王利明郭海坡
Owner CHINA RAILWAY TUNNEL GROUP CO LTD
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