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A component for simulating flexible joints in immersed tunnels

A flexible joint and immersed tunnel technology, which is applied in the testing of mechanical parts, the testing of machine/structural parts, and measuring devices, etc., can solve the problem of large measurement errors, difficult to measure joint reactions, and difficult to use tunnel analysis and design for measurement results. and other problems, to achieve the effect of simple method, easy raw material and low material cost

Inactive Publication Date: 2016-08-24
BEIJING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Using the test method to measure the stress at the joint of the immersed tunnel can better study the performance of the joint of the immersed tunnel and provide an important reference for the design and compilation of specifications. The structure is the same as the original model. It is difficult to measure the response of the joint during the test. For example, the axial force of the joint is generally obtained by measuring the stress of the steel bar with a strain gauge. The measurement results are difficult to use in the analysis and design of the tunnel. And the strain gauge itself is used for earthquake dynamic strain measurement error is relatively large

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  • A component for simulating flexible joints in immersed tunnels
  • A component for simulating flexible joints in immersed tunnels
  • A component for simulating flexible joints in immersed tunnels

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Embodiment Construction

[0025] like Figure 1-9 As shown, the present invention is a component for simulating the flexible joint of an immersed tube tunnel, including steel bar I1, angle steel I2, steel washer I3, steel ring I4, force measuring device 5, loose bolt 6, steel plate 7, and steel ring II8 , High-strength steel wire 9, fixing bolt 10, steel washer Ⅱ11, rubber ring 12, steel ring Ⅲ13, angle steel Ⅱ14, steel bar Ⅱ15. The extremities of steel bar I1 and angle steel I2 embedded in concrete structure 16 are welded, steel washer I3 is welded to the extremities of upper and lower angle steel I2 not embedded in concrete structure 16, and one end of steel ring I4 is welded to the end of steel washer I3 inner wall. The extremities of steel bar II15 and angle steel II14 embedded in the concrete structure 16 are welded, the steel washer II11 is welded to the extremities of the upper and lower angle steel II14 not embedded in the concrete structure 16, and one end of the steel ring III13 is welded to...

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Abstract

The invention discloses a member for simulating a flexible joint of an immersed tube tunnel, and belongs to the technical field of engineering test and testing. The member consists of angle steel, steel rings, rubber rings, bolts, high-strength steel wires, steel plates and steel bars. Horizontal force measuring devices are arranged in steel gaskets and the steel rings to measure the axial force on a reduced scale model joint of the immersed tube tunnel, meanwhile displacement sensors are arranged on both sides of a simulated rubber water-stop to measure the displacement change of the joint, so that the member is suitable for a test in which the flexible joint is taken as a research object in reduced-scale test of a tunnel structure. The member is simple in structure, and low in costs of required materials, and the axial force and displacement at the joint can be measured accurately without damaging the sensors and instrument equipment.

Description

technical field [0001] The invention relates to a component for simulating a flexible joint of an immersed tube tunnel, belonging to the technical field of engineering test and testing. Background technique [0002] The pipe section joint is an important part of the immersed tube tunnel, and it is also a weak part, and its structural strength and stiffness are more fragile than the concrete pipe section. Earthquake action or uneven settlement of immersed tube foundations and pipe sections can easily lead to dislocation and opening of the joints, reducing or even losing the water sealing effect of the joints, and posing a great threat to the normal operation and safety performance of the immersed tube tunnel , The mechanical performance of joints has always been the focus of research on immersed tunnel joints. [0003] Using the test method to measure the stress at the joint of the immersed tunnel can better study the performance of the immersed tunnel joint and provide an i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M13/00
Inventor 闫维明陈红娟张学明陈适才谢志强宋林琳
Owner BEIJING UNIV OF TECH
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