Field immersion load test device for determining collapsibility coefficient of collapsible loess and test method thereof

A technology of collapsible loess and load test, which is applied in the field of foundation soil survey, construction, and basic structure engineering, etc. The effect of small site and significant economic benefits

Inactive Publication Date: 2012-01-11
NINGXIA HUI AUTONOMOUS REGION ELECTRIC POWER DESIGN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the method to solve the difference is the on-site water immersion test. Due to the on-site water immersion test on the self-weight collapsible loess site, the construction period is long and the cost is high, generally about 2 months, and it is limited by various conditions of engineering construction. In the actual project Difficult to perform water immersion test
In the non-self-weight site, due to the need for field immersion test under a certain pressure, in addition to water immersion, pressurized conditions and equipment are required, so it cannot be implemented in actual engineering

Method used

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  • Field immersion load test device for determining collapsibility coefficient of collapsible loess and test method thereof
  • Field immersion load test device for determining collapsibility coefficient of collapsible loess and test method thereof
  • Field immersion load test device for determining collapsibility coefficient of collapsible loess and test method thereof

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Embodiment Construction

[0035] Such as figure 1 , 2 As shown, the top plate 4 and the bottom plate 3 parallel to each other are connected to each other as a whole by ribs 2 . Holes 1 for placing punctuation marks are evenly distributed on the circle of 1 / 2 radius of the circular bottom plate.

[0036] When in use, excavate test pits and install load test equipment at the site that needs to be tested according to the national standard. The diameter of the bottom of the test pit should not be less than 3 times the diameter of the bottom plate. Before placing the device, lay medium and coarse sand with a thickness of 10 to 20 mm under the bottom plate for leveling, use a Luoyang shovel, and drill shallow, shallow, and deep holes with a depth of the radius of the bottom plate and the diameter of the bottom plate at the positions corresponding to the holes on the bottom plate for placing punctuation marks. There are 2 deep punctuation holes each, and 2 shallow and 2 deep punctuation points are respectiv...

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Abstract

The invention relates to a measuring device and particularly a device for determining collapsibility coefficient of collapsible loess in the field. The device is characterized in that a top plate and a bottom plate are integrally connected through a rib plate, the top plate and the bottom plate are in parallel with each other and holes for marking points are evenly distributed on the bottom plate. When the technical scheme is used for conducting a simulated immersion test in the field to be test, the device has the advantages of small test field, short test cycle, convenience in use and the like. The test result can really reflect the collapsibility coefficient of the collapsible loess in the tested field. The engineering cost and the test expense can be saved.

Description

technical field [0001] The invention relates to a measuring device, in particular to a device for measuring the collapsibility coefficient of collapsible loess and a testing method thereof. Background technique [0002] With the rapid development of my country's national economy, the scale and investment of engineering construction in Northwest China are getting larger and larger, and the requirements for safety and technology are getting higher and higher. In the national standard GB50025-2004 "Code for Buildings in Collapsible Loess Areas", the two main coefficients β 0 —Correction coefficient and β that vary depending on the soil quality of the region——Correction coefficient considering factors such as the possibility of foundation being wetted by water and the lateral extrusion of the soil under the base, which is a range value given based on limited test data in different regions , such as Longxi area β 0 Take 1.50, take 0.50 for other areas, and take 1.50 for β value...

Claims

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Application Information

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IPC IPC(8): E02D1/02
Inventor 马良荣
Owner NINGXIA HUI AUTONOMOUS REGION ELECTRIC POWER DESIGN INST
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