CN101707024B - Foundation bearing capacity damage model test device - Google Patents
Foundation bearing capacity damage model test device Download PDFInfo
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- CN101707024B CN101707024B CN2009100192833A CN200910019283A CN101707024B CN 101707024 B CN101707024 B CN 101707024B CN 2009100192833 A CN2009100192833 A CN 2009100192833A CN 200910019283 A CN200910019283 A CN 200910019283A CN 101707024 B CN101707024 B CN 101707024B
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Abstract
The invention discloses a foundation bearing capacity damage model test device. The foundation bearing capacity damage model test device is characterized in that sand grains are filled at the bottom of an organic glass model test box with the filling height of 250-350mm; multi-storey building models and high-storey building models are vertically arranged in the sand grains; a bracket is additionally arranged outside the model test box, and an organic glass water container is hung on the bracket; the bottom of the water container is higher than the top surface of the model test box, and the water container is communicated with the bottom of the model test box through a pipeline; and a mesh layer is laid at the bottom of the model test box. The invention simulates the overall process of building damage caused by the failure of the foundation bearing capacity, thereby meeting the visibility in classroom teaching. The invention provides an unprecedented model test device for civil engineering teaching tests, and provides a powerful analysis basis for technical personnel of the civil engineering field to analyze the building damage caused by the failure of the foundation bearing capacity.
Description
Technical field
The present invention relates to the foundation bearing capacity damage model test device, can be used for higher education civil engineering work class education experiment.
Background technology
Foundation bearing capacity is a basic important topic of soil mechanics research, occupies important subject status in the civil engineering teaching.The influence that is subjected to foundation bearing capacity to influence especially underground water table lifting causes the phenomenon of buildings run-off the straight even destruction to happen occasionally.Yet the building destruction process owing to bearing capacity causes generally is difficult to record in engineering practice, can not satisfy the intuitive in the classroom instruction.Be necessary to develop a set of model test unit, the directly perceived reproduction owing to foundation bearing capacity loses efficacy causes the process of building destruction.According to domestic many scientific research institutions of investigation and Indexing of Scien. and Tech. Literature, do not find the report of similar test unit as yet.
Summary of the invention
The present invention is directed to the problem that foundation bearing capacity lost efficacy, a kind of foundation bearing capacity damage model test device is provided.
For achieving the above object, bath scaled model experimental device structure of the present invention is: it comprises an organic glass model chamber, be filled with sand grains in model test case bottom, packed height is 250～350mm, erectting in the sand grains has tier building object model and skyscraper object model, arranges a support outside the model test case in addition, is hung with the organic glass water receptacle on the support, the water receptacle bottom level is higher than model test case end face, and water receptacle communicates with model test case bottom by pipeline; In order to prevent that sand grains from entering pipeline, be covered with one deck net sheet in model test case bottom.
Described sand grains is, and to be the middle sand of 0.25～0.5mm and fine sand that particle diameter is 0.1～0.25mm by particle diameter mix according to 2: 1 volume ratio.
Described tier building object model is a hollow organic glass square body, is filled with steel cuttings in the square body, and loading is no more than 1.5kg with the controlling models deadweight.
Described high-rise is to be furnished with hollow organic glass square body on a model plummer, is filled with steel cuttings in the square body, and loading is no more than 2kg with the controlling models deadweight, Model Pile is arranged as support in model plummer bottom.
Process of the test of the present invention is:
The first step: at first prepare to install model test case, support and organic glass water receptacle and annex thereof;
Second step: the organic glass water receptacle is hung on the support, the water receptacle bottom level is higher than model test case end face 300～500mm, after the interior water filling of water receptacle, open switch, make water flow into the model test case by the water filling container, when 100mm when height in the chamber of water injection model, off switch, and check the dense water of each joint;
The 3rd step: put into sand in the model test case gently, sand layer thickness is 250-350mm, opens switch again, and control sand middle water level height is 200mm;
The 4th step: put into tier building object model and skyscraper object model;
The 5th step: open switch, adopts mode such as slow, quick to continue water filling in model casing, the stability change of observation buildings in the injecting process.
Advantage of the present invention is:
1) intuitively showed the building destruction process that underground water table rises and causes; Can disclose the important principles " principle of effective stress of soil " in the soil mechanics teaching.
2) shallow foundation buildings and pile foundation building compares under the situation of the same race, has intuitively disclosed the validity of pile foundation opposing WATER LEVEL CHANGES;
3), intuitively represent the factor of structural stability influence: underground water table ascending velocity, lifting height etc. by the control waterflood injection rate.
4) can become model test intuitively to the complex engineering problem, this model test is made easily, and is with low cost, is beneficial to the laboratory and applies, and produces better teaching and economic benefit.
5) this model test has mobility, operability preferably, can satisfy the teaching of different occasions and use.
In a word, the invention belongs to the civil construction field of living closely bound up with people, for a person skilled in the art, intuitive is stronger, it has reproduced because the foundation bearing capacity actual effect causes the overall process of building destruction, satisfied the intuitive in the classroom instruction,, also caused building destruction that strong analysis foundation is provided for those skilled in the art analyze the foundation bearing capacity actual effect for the building education experiment provides a kind of unprecedented model experiment equipment.Have outstanding substantive distinguishing features and obvious improvement, possess the creativeness of the 3rd section of the 22nd article regulation of Patent Law.
Description of drawings
Fig. 1 is the main synoptic diagram of looking of the present invention.
Among the figure: 1-testing table, the chamber of 2-organic glass model, 3-tier building object model, 4-skyscraper object model, 5-organic glass water receptacle, 6-switch, 7-pipeline, 8-support, 9-net sheet.
Embodiment
Further specify technical scheme of the present invention below in conjunction with the drawings and specific embodiments.
As shown in the figure, it comprises an organic glass model chamber 2 that is erected on the testing table 1 the present invention, be filled with sand grains in model test case 2 bottoms, packed height is 250～350mm, erect in the sand grains tier building object model 3 and skyscraper object model 4 are arranged, outside model test case 2, arrange a support 8 in addition, be hung with organic glass water receptacle 5 on the support 8, organic glass water receptacle 5 bottom level are higher than model test case 2 end faces 300～500mm, organic glass water receptacle 5 bottoms are provided with switch 6, and communicate with model test case 2 bottoms by pipeline 7; Be covered with one deck net sheet 9 in model test case 2 bottoms.
Above-mentioned model test case 2 is of a size of 600 * 400 * 400mm, and it is to be made by the organic glass of thickness 10mm.
The base plane of above-mentioned tier building object model 3 is of a size of 100 * 100mm, height 200mm, it is to be made by hollow organic glass, in be filled with steel cuttings, be no more than 1.5kg with control buildings deadweight.
The base plane size 100 * 100mm of above-mentioned skyscraper object model 4, height 400mm, it is to be made by hollow organic glass, interior filling steel cuttings is no more than 2kg with the deadweight of control buildings.
Above-mentioned sand grains is, and to be the middle sand of 0.25～0.5mm and fine sand that particle diameter is 0.1～0.25mm by particle diameter mix according to 2: 1 volume ratio.
Above-mentioned net sheet 9 is made by plastic wire.
Above-mentioned support 8 by
36 stainless-steel tubes are made.
Claims (2)
1. foundation bearing capacity damage model test device, it is characterized in that, it comprises an organic glass model chamber, be filled with sand grains in model test case bottom, packed height is 250～350mm, and erectting in the sand grains has tier building object model and skyscraper object model, outside the model test case, arrange a support in addition, be hung with the organic glass water receptacle on the support, the water receptacle bottom level is higher than model test case end face, and water receptacle communicates with model test case bottom by pipeline; Be covered with one deck net sheet in model test case bottom;
Described sand grains is, and to be the middle sand of 0.25～0.5mm and fine sand that particle diameter is 0.1～0.25mm by particle diameter mix according to 2: 1 volume ratio;
Described tier building object model is a hollow organic glass square body, is filled with steel cuttings in the square body, and loading is no more than 1.5kg with the controlling models deadweight;
Described high-rise is to be furnished with hollow organic glass square body on a model plummer, is filled with steel cuttings in the square body, and loading is no more than 2kg with the controlling models deadweight, Model Pile is arranged as support in model plummer bottom.
2. the test method of foundation bearing capacity damage model test device as claimed in claim 1 is characterized in that, it may further comprise the steps:
The first step: at first prepare to install model test case, support and organic glass water receptacle and annex thereof;
Second step: the organic glass water receptacle is hung on the support, the water receptacle bottom level is higher than model test case end face 300～500mm, after the interior water filling of water receptacle, open switch, make water flow into the model test case by the water filling container, when 100mm when height in the chamber of water injection model, off switch, and check the dense water of each joint;
The 3rd step: put into sand in the model test case gently, sand layer thickness is 250-350mm, opens switch again, and control sand middle water level height is 200mm;
The 4th step: put into tier building object model and skyscraper object model;
The 5th step: open switch, adopts mode such as slow, quick to continue water filling in model casing, the stability change of observation buildings in the injecting process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100192833A CN101707024B (en) | 2009-10-14 | 2009-10-14 | Foundation bearing capacity damage model test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100192833A CN101707024B (en) | 2009-10-14 | 2009-10-14 | Foundation bearing capacity damage model test device |
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| Publication Number | Publication Date |
|---|---|
| CN101707024A CN101707024A (en) | 2010-05-12 |
| CN101707024B true CN101707024B (en) | 2011-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009100192833A Expired - Fee Related CN101707024B (en) | 2009-10-14 | 2009-10-14 | Foundation bearing capacity damage model test device |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105372131B (en) * | 2015-11-20 | 2018-07-06 | 同济大学 | A kind of Tests for Geosynthetics Characterization device and method for simulating actual condition |
| CN105976690A (en) * | 2016-06-29 | 2016-09-28 | 广西大学 | Draining and pressure reducing model testing apparatus |
| CN109035998B (en) * | 2018-10-22 | 2021-02-19 | 苏州大学 | Demonstration device for effective stress variation effect |
| CN109977453B (en) * | 2019-01-15 | 2023-04-18 | 河北工程大学 | Working resistance design method for solid filling hydraulic support |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101173520A (en) * | 2007-10-07 | 2008-05-07 | 中国矿业大学 | Method for differential settlement of buildings self-adapting groundwork and its structure |
| CN201103169Y (en) * | 2007-09-21 | 2008-08-20 | 中国矿业大学 | Frame support self-adapting for differential settlement of groundwork |
| CN201531036U (en) * | 2009-10-14 | 2010-07-21 | 山东科技大学 | Foundation bearing capacity destroying model testing device |
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- 2009-10-14 CN CN2009100192833A patent/CN101707024B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201103169Y (en) * | 2007-09-21 | 2008-08-20 | 中国矿业大学 | Frame support self-adapting for differential settlement of groundwork |
| CN101173520A (en) * | 2007-10-07 | 2008-05-07 | 中国矿业大学 | Method for differential settlement of buildings self-adapting groundwork and its structure |
| CN201531036U (en) * | 2009-10-14 | 2010-07-21 | 山东科技大学 | Foundation bearing capacity destroying model testing device |
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| CN101707024A (en) | 2010-05-12 |
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Granted publication date: 20110420 Termination date: 20111014 |