CN205776415U - Piled-box foundaton isolation property test model case - Google Patents
Piled-box foundaton isolation property test model case Download PDFInfo
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- CN205776415U CN205776415U CN201620417137.1U CN201620417137U CN205776415U CN 205776415 U CN205776415 U CN 205776415U CN 201620417137 U CN201620417137 U CN 201620417137U CN 205776415 U CN205776415 U CN 205776415U
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- gravel cushion
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Abstract
The open a kind of Piled-box foundaton isolation property test model case of this utility model, the casing (1) being fixed on vibration table surface including upper opening, bottom, flour sand (2) is filled in described casing (1), flour sand (2) is above coated with sand-gravel cushion (3), place caisson model (4) on described sand-gravel cushion (3), on caisson model (4), place balancing weight (5)；Also include many test piles (6), described test pile (6) is positioned at caisson model (4) lower section, bottom is inserted in flour sand (2), top is stretched in sand-gravel cushion (3), the thickness of described sand-gravel cushion (3) is two times of test pile (6) diameter, and test pile (6) stretches into length and its equal diameters of sand-gravel cushion (3) part.Piled-box foundaton isolation property test model case of the present utility model, can truly simulate the isolation property of Piled-box foundaton sand-gravel cushion.
Description
Technical field
This utility model belongs to Piled-box foundaton vibration testing device technical field, particularly a kind of Piled-box foundaton isolation property test model case.
Background technology
Piled-box foundaton dynamic interaction earthquake simulation test belongs to large geotechnical shock test.This test is with strong points, reliability is high.Popularization and application to shock insulating foundation are significant.Sand-gravel cushion Piled-box foundaton is to arrange sand-gravel cushion between stake and caisson, and without being rigidly connected between caisson and stake, sand-gravel cushion can be effectively reduced the earthquake response of caisson, and application has a extensive future.
Existing Piled-box foundaton isolation property test model case is broadly divided into two classes:
One class is to carry out damping with support style between stake and caisson.Sand-gravel cushion isolating affection income is not considered by this mode, and the technology that bearing is arranged on caisson foundation and Financial cost require higher, constrain the popularization and application of shock insulating foundation.
Another kind of employing basic infrastructure arranges sand-gravel cushion, by changing cushion thickness or grain composition, or be applied in combination with rubber grain and to probe into bed course isolating affection, but its research range is narrow, the isolating affection on other combining form bases can not be considered, such as, the situation of sand-gravel cushion is set between stake and caisson.
In a word, prior art there is the problem that the isolation property of sand-gravel cushion Piled-box foundaton can not truly be simulated in vibration test by Piled-box foundaton isolation property test model case.
Summary of the invention
The purpose of this utility model is to provide a kind of Piled-box foundaton isolation property test model case, can truly simulate the isolation property of sand-gravel cushion Piled-box foundaton.
The technical solution realizing this utility model purpose is:
A kind of Piled-box foundaton isolation property test model case, the casing being fixed on vibration table surface including upper opening, bottom, fills flour sand, coated with sand-gravel cushion above flour sand in described casing, place caisson model on described sand-gravel cushion, on caisson model, place balancing weight；Also including many test piles, described test pile is positioned at below caisson model, and bottom is inserted in flour sand, and top is stretched in sand-gravel cushion, and the thickness of described sand-gravel cushion is two times of test pile diameter, and test pile stretches into length and its equal diameters of sand-gravel cushion part.
Compared with prior art, its remarkable advantage is this utility model:
Can truly simulate the isolation property of sand-gravel cushion Piled-box foundaton.
This utility model is by rationally arranging each ingredient in model casing, compensate for this type of assay device conventional can not truly simulate Piled-box foundaton caisson-bed course-stake dynamic interaction and and conventional study method can not comprehensive verification sand-gravel cushion weak point of isolation property in combination foundation, it is possible to accurately, simulate the isolation property of sand-gravel cushion Piled-box foundaton truly.By this device, the shock insulating foundation of the deep-water bridge that can resist the horizontal loading such as wave, wind well can be studied.
With detailed description of the invention, this utility model is described in further detail below in conjunction with the accompanying drawings.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model Piled-box foundaton isolation property test model case.
Fig. 2 is the top view of this utility model Piled-box foundaton isolation property test model case.
In figure, casing 1, flour sand 2, sand-gravel cushion 3, caisson model 4, balancing weight 5, test pile 6, vibration pickup 7, foil gauge 8, flexible liner 9.
Detailed description of the invention
As shown in Figure 1, 2, this utility model Piled-box foundaton isolation property test model case, the casing 1 being fixed on vibration table surface including upper opening, bottom, flour sand 2 is filled in described casing 1, flour sand 2 is above coated with sand-gravel cushion 3, place caisson model 4 on described sand-gravel cushion 3, on caisson model 4, place balancing weight 5；Also include many test piles 6, described test pile 6 is positioned at below caisson model 4, and bottom is inserted in flour sand 2, and top is stretched in sand-gravel cushion 3, the thickness of described sand-gravel cushion 3 is two times of test pile 6 diameter, and test pile 6 stretches into length and its equal diameters of sand-gravel cushion 3 part.
For being studied the isolation property of Piled-box foundaton by the horizontal acceleration and displacement monitoring Piled-box foundaton simultaneously, in flour sand 2, sand-gravel cushion 3 and caisson model 4, it is equipped with vibration pickup 7.
Described every test pile 6 posts multiple foil gauge 8.
Described foil gauge 8 is pasted onto test pile 6 both sides in pairs.
As preferably, test pile uses epoxide resin material to process, and stake footpath is 25mm, a length of 500mm of stake, and pile body inwall symmetry sticks foil gauge, and Model Pile built-in type is arranged, by place set in advance and depth localization in test flume.
For reducing model boundary effect, it is provided with flexible liner 9 in described casing 1 inside sidewalls.
Preferably, described flexible liner 9 is 40～50mm thick sponge plates.
Described flour sand 2 loads casing 1 and uses formula of raining to be layered into groove, strike off and pointwise compacting.
Described many test piles 6 become matrix arrangement.
Preferably, described casing 1 uses safety glass to make.
When using Piled-box foundaton isolation property test model case of the present utility model to test, can operate in the steps below:
(1) flour sand uses formula of raining load in model casing, strike off after being layered groove and gently ram pointwise compacting.Test pile is embedded in flour sand, when flour sand sample preparation to test pile top is with next times of stake path position, stops knockout, and is flattened by flour sand upper surface；
(2) on flour sand, lay the sand-gravel cushion sample preparation through gradation design, it is ensured that test pile embed sand-gravel cushion in
One times of test pile stake footpath, sand-gravel cushion thickness is the twice of test pile, flattens sand-gravel cushion surface；
(3) placing caisson model on sand-gravel cushion, its internally installed vibration pickup, balancing weight is placed at caisson model top；
(4) vibration table controller inputs TAFT ripple, EL-CENTRO ripple and the anti-seismic performance of three kinds of KOBE ripple differently seismic wave observation Piled-box foundaton, the horizontal acceleration of observation Piled-box foundaton and displacement response, the isolation property of research Piled-box foundaton.
Claims (8)
1. a Piled-box foundaton isolation property test model case, the casing (1) being fixed on vibration table surface including upper opening, bottom, it is characterised in that:
Flour sand (2) is filled in described casing (1), flour sand (2) is above coated with sand-gravel cushion (3), place caisson model (4) on described sand-gravel cushion (3), on caisson model (4), place balancing weight (5)；Also include many test piles (6), described test pile (6) is positioned at caisson model (4) lower section, bottom is inserted in flour sand (2), top is stretched in sand-gravel cushion (3), the thickness of described sand-gravel cushion (3) is two times of test pile (6) diameter, and test pile (6) stretches into length and its equal diameters of sand-gravel cushion (3) part.
Model casing the most according to claim 1, it is characterised in that: in flour sand (2), sand-gravel cushion (3) and caisson model (4), it is equipped with vibration pickup (7).
Model casing the most according to claim 1, it is characterised in that: on described every test pile (6), post multiple foil gauge (8).
Model casing the most according to claim 3, it is characterised in that: described foil gauge (8) is pasted onto test pile (6) both sides in pairs.
Model casing the most according to claim 1, it is characterised in that: it is provided with flexible liner (9) in described casing (1) inside sidewalls.
Model casing the most according to claim 5, it is characterised in that: described flexible liner (9) is 40～50mm thick sponge plates.
Model casing the most according to claim 1, it is characterised in that: described many test piles (6) become matrix arrangement.
Model casing the most according to claim 1, it is characterised in that: described casing (1) uses safety glass to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620417137.1U CN205776415U (en) | 2016-05-10 | 2016-05-10 | Piled-box foundaton isolation property test model case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620417137.1U CN205776415U (en) | 2016-05-10 | 2016-05-10 | Piled-box foundaton isolation property test model case |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205776415U true CN205776415U (en) | 2016-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620417137.1U Expired - Fee Related CN205776415U (en) | 2016-05-10 | 2016-05-10 | Piled-box foundaton isolation property test model case |
Country Status (1)
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| CN (1) | CN205776415U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105756108A (en) * | 2016-05-10 | 2016-07-13 | 扬州大学 | Model box for testing vibration isolation performance of piled box foundations |
| CN110029694A (en) * | 2019-05-09 | 2019-07-19 | 福州大学 | A kind of construction method suitable for shaketalle test pile foundation clump weight |
| CN110424440A (en) * | 2019-08-23 | 2019-11-08 | 东北大学 | A kind of composite pile foundation basis of open caisson staking |
-
2016
- 2016-05-10 CN CN201620417137.1U patent/CN205776415U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105756108A (en) * | 2016-05-10 | 2016-07-13 | 扬州大学 | Model box for testing vibration isolation performance of piled box foundations |
| CN110029694A (en) * | 2019-05-09 | 2019-07-19 | 福州大学 | A kind of construction method suitable for shaketalle test pile foundation clump weight |
| CN110029694B (en) * | 2019-05-09 | 2024-02-06 | 福州大学 | Construction method suitable for vibrating table test pile foundation balancing weight |
| CN110424440A (en) * | 2019-08-23 | 2019-11-08 | 东北大学 | A kind of composite pile foundation basis of open caisson staking |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161207 Termination date: 20190510 |