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Model test device for pile type reinforced roadbed

A model test device and reinforced roadbed technology, applied in the direction of measuring devices, material inspection products, instruments, etc., can solve the problems of not following the similar principle, large volume, heavy test workload, etc., and achieve the effect of authentic and credible results

Pending Publication Date: 2017-04-26
TONGJI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, some existing model designs do not follow the similarity principle in the selection of parameters, and have strong subjective randomness.
Moreover, the volume is large. When changing the test parameters, it is necessary to take out all the upper filling soil, and the test workload is very large.

Method used

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  • Model test device for pile type reinforced roadbed

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] The base is a hollow cylindrical plexiglass tube with no top and no bottom, with a height of 10cm. Above the base is a model box, which is made of plexiglass and is a hollow cylinder with an open top. The inner diameter is 22cm, the height is 40cm, and the wall thickness is 5mm. It is the main part of the entire device. There is a load-bearing board in the box. The load-bearing board is 9cm away from the bottom plate at the highest point, and the thickness is 1cm. The size of the load-bearing board matches the inside of the box, and it can move up and down freely inside the box. The load-bearing board is equipped with 4 plexiglass Model pile, 2cm in diameter, 10cm in height, 8cm between the center of the pile, threaded at the top of the column, and the rectangular parallelepiped plexiglass plate of the simulated pile cap is 4.5×4.5cm, 5×5cm, 5.5×5.5cm, and the thickness is all At the same time, there is a threaded hole corresponding to the size of the column in the middl...

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Abstract

The invention relates to the field of road engineering and especially relates to a model test device for a pile type reinforced roadbed. The model test device for the pile type reinforced roadbed provided by the invention comprises a model box body, a counterweight and one or more model pile, wherein a model soil accommodating space is formed in the model box body; a bearing plate is arranged in the model soil accommodating space; the model pile comprises a model pile cap and a model pile rod; a model pile hole is formed on the bearing plate; the model pile cap is located on the bearing plate; the model pile rod downward extends into the model pile hole from the model pile cap; a macadam cushion is also arranged above the model pile cap. According to the invention, CT scanning can be effectively performed on the whole model, a test result is true and reliable and a load transmission mechanism reflected by the model test can be considered as a load transmission mode in the practical engineering.

Description

Technical field [0001] The invention relates to the field of road engineering, in particular to a model test device for pile-supported reinforced roadbeds. Background technique [0002] Soft soil is the abbreviation of weak clay soil, which is widely distributed in my country. Pile-supported reinforced composite roadbed is a form of roadbed that is very suitable for building highways and urban roads on natural soft soil foundations. Pile-supported reinforced composite foundation refers to the natural foundation in the process of foundation treatment, the lower soil is reinforced by the vertical reinforcement-"piles" to form a pile-soil composite foundation reinforcement area, and the upper part of the area is horizontally reinforced The body-"net" is strengthened to form a reinforced soil composite foundation reinforcement area, and can make the pile-net-soil synergistic effect and jointly bear the load of the artificial foundation. [0003] Pile-supported reinforced roadbed has ...

Claims

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Application Information

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IPC IPC(8): G01N33/42G01N23/04
CPCG01N23/046G01N33/42G01N2223/03
Inventor 钱劲松白墨凌建明杨戈
Owner TONGJI UNIV