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Trolly testing method for horizontal resistance of anti-collision structure pile foundation

A technology of lateral resistance and testing methods, which is applied in the field of traffic safety, can solve problems such as wrong testing procedures, and achieve the effect of avoiding the influence of inertial effects

Inactive Publication Date: 2019-12-24
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the defects existing in the prior art, the present invention provides a trolley test method for the lateral resistance of the pile foundation of the anti-collision structure, which is used to solve the problem of using wrong test procedures in the prior art

Method used

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  • Trolly testing method for horizontal resistance of anti-collision structure pile foundation

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Embodiment Construction

[0021] The technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without innovative efforts fall within the protection scope of the present invention.

[0022] see figure 1 with figure 2 , a trolley test method for the lateral resistance of pile foundations of anti-collision structures. In the dynamic impact test, the most basic components are: column 1, trolley 2, and soil foundation 3.

[0023] Considering that this method needs to measure the lateral resistance of the pile foundation of the anti-collision structure, the trolley 2 is not allowed to have obvious deformation, and more energy dissipation occurs. The load exerted by...

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Abstract

The invention discloses a trolly testing method for the horizontal resistance of an anti-collision structure pile foundation. A three-dimensional force sensor arranged on a collision head is adopted to measure force; a trolley with variable mass and the designed collision head are adopted; and the designed collision head can make the collision force on a collision point vertical to an upright postand points to the center of the three-dimensional force sensor all the time. By adopting a method for synchronously testing the three-dimensional force sensor and a video measuring instrument, displacement is measured by using the video measuring instrument while the collision force is measured by using the three-dimensional force sensor, thereby achieving synchronous measurement of the force andthe displacement. Due to the collision force measured through the method, the influence of an inertia effect in a collision test is avoided and the test result is real horizontal resistance of the anti-collision structure pile foundation.

Description

technical field [0001] The invention relates to the technical field of traffic safety, in particular to a trolley test method for the transverse resistance of pile foundations of anti-collision structures. Background technique [0002] The lateral resistance of the pile foundation refers to the ability of the column and the soil foundation to bear the effect of lateral load. The desired behavior of the pile-soil interaction is for the column to rotate in the soil to absorb as much energy as possible. To achieve this, the pile-soil load-bearing capacity is critical. A weak pile-soil load-bearing capacity will cause the column to be pulled directly from the soil Therefore, the safety performance of the guardrail system cannot be guaranteed. [0003] At present, there are two ways of static loading and dynamic loading to study the interaction behavior between piles and soil at home and abroad. The static loading test cannot accurately reflect the impact effect (such as strain...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/303G01N3/04
CPCG01N3/303G01N3/04
Inventor 雷正保荀舟
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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