Vacuum supercharge combined prepressing experiment device

A technology of combined stacking and experimental devices, applied in the field of experimental devices, can solve problems such as backward theoretical research, and achieve the effect of convenient use and simple structure

Inactive Publication Date: 2013-03-27
CHINA UNIV OF GEOSCIENCES (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the theoretical research of this new construction method is far behind the engineering practice.
Due to the lack of theoretical research, indoor experimental research is necessary to solve engineering practical application problems. At present, when conducting ex...

Method used

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  • Vacuum supercharge combined prepressing experiment device
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  • Vacuum supercharge combined prepressing experiment device

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Embodiment Construction

[0030] The following clearly and completely describes the technical solutions in the embodiments of the present invention. Obviously, 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 making creative efforts belong to the protection scope of the present invention.

[0031] The embodiment of the present invention provides a vacuum surcharge combined preloading experimental device, such as figure 1 As shown, the device includes: a cylinder 1, a piston 2, a sealing member 3 and a pressure measuring tube 4;

[0032] Wherein, the top cover 12 of the cylinder 1 is provided with a guide opening 121 communicating with the inside of the cylinder 1;

[0033] The piston 2 is composed of a piston head 21 and a vacuum pressurization chamber 22. The vacuum pressurization chamber 22 is provided with an exter...

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PUM

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Abstract

The invention discloses a vacuum supercharge combined prepressing experiment device which comprises a cylinder body, a piston, sealing parts and a pressure measurement pipe, wherein a top cover of the cylinder body is provided with guide openings communicated with the inside of the cylinder body; the piston comprises piston heads and a vacuum pressurizing bin, the vacuum pressurizing bin is provided with an external port connected with an external vacuumizing device and an opening penetrating through the piston heads to be communicated with the inside of the cylinder body; the piston is movably arranged in the cylinder body, the piston heads of the piston are arranged in the cylinder body, the vacuum pressurizing bin extends out of the cylinder body from the guide openings of the top cover of the cylinder body, the piston can descend or ascend in the cylinder body; the sealing parts are arranged on a contact part of the vacuum pressurizing bin and the guide openings of the top cover of the cylinder body, a closed supercharge pressurizing bin is formed among the piston heads, the inner wall of the cylinder body, the top cover and the outer wall of the vacuum pressurizing bin, a pneumatic joint connected with an external pneumatic device is arranged on the top cover of the cylinder cover, corresponding to the supercharge pressurizing bin; and the pressure measurement pipe is communicated with the inside of the cylinder body below the piston heads of the piston. According to the vacuum supercharge combined prepressing experiment device, the overlapped supercharge under a vacuum load can be realized.

Description

technical field [0001] The invention belongs to the field of experimental devices, in particular to a vacuum surcharge combined preloading experimental device. Background technique [0002] Soft soil is widely distributed along the coast and in some inland areas of our country. With the rapid development of the economy, a large number of buildings or structures are built on soft soil foundations. However, the bearing capacity of soft soil foundations is weak and often requires foundation reinforcement. , in order to meet the needs of engineering construction. At present, the vacuum-surcharge combined preloading method is a main method for strengthening soft soil foundations. The vacuum-surcharge combined preloading method treats the foundation. First, a sand cushion layer of a certain thickness (usually 40-50 cm) is laid on the surface of the original foundation. Then drive bagged sand wells or plastic drainage boards into the soil as vertical drainage bodies. The air-tigh...

Claims

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Application Information

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IPC IPC(8): G01N33/24
Inventor 杨宇友柴锦春张鹏王贵和李宏安苏艺
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)
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