CN104032720B - It is applicable to test method and the device of deep supporting course bearing capacity - Google Patents
It is applicable to test method and the device of deep supporting course bearing capacity Download PDFInfo
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- CN104032720B CN104032720B CN201410187758.0A CN201410187758A CN104032720B CN 104032720 B CN104032720 B CN 104032720B CN 201410187758 A CN201410187758 A CN 201410187758A CN 104032720 B CN104032720 B CN 104032720B
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Abstract
The invention discloses a kind of test method being applicable to deep supporting course bearing capacity and device.Its method is to arrange counter-force girder steel bottom the pile holes protecting wall on foundation ditch top, counter-force girder steel is connected with bottom pile holes protecting wall, then bottom foundation ditch, place bearing plate, between bearing plate and counter-force girder steel, jack is set, pressed by jack pair bearing plate, utilize counter-force girder steel and pile holes protecting wall to provide counter-force with the side friction of stake holes, obtain supporting course bearing capacity and obtain result of the test.The present invention well solves the problem that supporting course bearing capacity is difficult of measuring under Guizhou Province's complex geological condition；Prove that the method is easy to use by many tests, reliable results；Having simple in construction in structure, structure rationally, and has passed through Force Calculation checking.
Description
Technical field
The present invention relates to a kind of test method being applicable to deep supporting course bearing capacity and device, belong to bearing capacity of pile foundation detection
Technical field.
Background technology
The basis of buildings in general is many using middle weathered layer as supporting course, it is therefore desirable to the bearing capacity of weathered layer in detection.
In traditional detection, the method for weathered layer bearing capacity is one piece of bearing plate of placement in foundation ditch, and bearing plate is provided with load platform, then
Load platform is put some steel ingots.The bearing capacity of middle weathered layer is recorded by the weight of steel ingot.
And Guizhou province overlying argillic horizon, strongly weathered sand-rock are thicker, middle weathered layer buried depth is typically more than 8 meters.As by upper
Stating traditional method test, excavation area is too big, is little at the scene realize.As arranged jack on bearing plate also due to
Force-transmitting pole is long easily causes unstable failure.It is thus desirable to find a kind of test method being applicable to deep supporting course bearing capacity and
Device.
Summary of the invention
It is an object of the invention to, it is provided that a kind of test method being applicable to deep supporting course bearing capacity and device, to solve
In traditional technique in measuring, during weathered layer bearing capacity, excavation area is the biggest, it is impossible to adapts to the test problems of deep supporting course, thus overcomes
The deficiencies in the prior art.
The technical scheme is that and be achieved in that:
A kind of test method being applicable to deep supporting course bearing capacity of the present invention is that the method is the stake holes on foundation ditch top
Arranging counter-force girder steel bottom retaining wall steel pipe, counter-force girder steel is connected bottom pile holes protecting wall steel pipe, then places bottom foundation ditch and holds
Pressing plate, arranges jack between bearing plate and counter-force girder steel, is pressed by jack pair bearing plate, utilizes counter-force girder steel
There is provided counter-force with the side friction of pile holes protecting wall steel pipe with stake holes, obtain supporting course bearing capacity and obtain result of the test.
In preceding method, described counter-force girder steel is word beam or a rood beam, and a word beam is less than 250 for supporting course bearing capacity
The test of ton, rood beam is less than the test of 500 tons for supporting course bearing capacity more than 250 tons.
A kind of assay device for the present invention of said method is, this device includes the pile holes protecting wall being located at foundation ditch top
Steel pipe and be located at the bearing plate bottom foundation ditch；Be connected with counter-force girder steel bottom pile holes protecting wall steel pipe, counter-force girder steel and bearing plate it
Between be provided with jack.
In above-mentioned assay device, described counter-force girder steel includes that girder, girder both sides are provided with the connection wing, connects the wing and is provided with
One group of connecting hole, connects the wing and is connected with spar through connecting hole.
In above-mentioned assay device, the cross section of described girder, the connection wing and spar is I-shaped, connects the upper and lower of the wing
Wing plate and web are all and Main Girder Welding.
In above-mentioned style device, the described connection wing and the upper lower wing plate of spar and web are equipped with connecting hole, connect
On the wing, the connecting hole on lower wing plate is connected with lower wing plate on spar through wing connecting plate；Connect the trans-abdominal connection of connecting hole on wing web
Plate is connected with spar web.
In above-mentioned assay device, between described girder and the upper lower wing plate of spar, it is provided with stiffener.
Owing to have employed technique scheme, compared with prior art, the present invention well solves Guizhou Province to the present invention
The problem that supporting course bearing capacity is difficult is measured under complex geological condition；By substantial amounts of test and actually used proof, the present invention is not
Only have easy to use, the advantage of reliable results, and also the present invention also has simple in construction, constructs rational advantage；The present invention
Not only by Force Calculation checking, and have also passed through the inspection of actual application.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of girder；
Fig. 3 is the structural representation of spar；
Fig. 4 is the structural representation connecting the wing；
Fig. 5 is the structural representation of counter-force girder steel.
Being labeled as in figure: 1-foundation ditch, 2-pile holes protecting wall steel pipe, 3-bearing plate, 4-counter-force girder steel, 5-jack, 6-master
Beam, 7-connects the wing, 8-connecting hole, 9-spar, 10-wing connecting plate, 11-abdomen connecting plate, 12-stiffener.
Detailed description of the invention
The present invention is described in further detail with embodiment below in conjunction with the accompanying drawings, but any not as to the present invention
Limit.
The test method that the present invention a kind of is applicable to deep supporting course bearing capacity is, as it is shown in figure 1, the method is at foundation ditch
Arranging counter-force girder steel 4 bottom the pile holes protecting wall steel pipe 2 on 1 top, counter-force girder steel 4 is connected bottom pile holes protecting wall steel pipe 2, then exists
Place bearing plate 3 bottom foundation ditch 1, jack 5 is set between bearing plate 3 and counter-force girder steel 4, by jack 5 to bearing plate 3
Press, utilize counter-force girder steel 4 and pile holes protecting wall steel pipe 2 to provide counter-force with the side friction of foundation ditch 1, obtain supporting course and hold
Load power obtains result of the test.Counter-force girder steel 4 is word beam or a rood beam, and a word beam is less than the examination of 250 tons for supporting course bearing capacity
Testing, rood beam is less than the test of 500 tons for supporting course bearing capacity more than 250 tons.
For the structural representation of a kind of assay device of the present invention of said method as it is shown in figure 1, this device includes setting
Pile holes protecting wall steel pipe 2 on foundation ditch 1 top and be located at the bearing plate 3 bottom foundation ditch 1；With counter-force steel bottom pile holes protecting wall steel pipe 2
Beam 4 connects, and is provided with jack 5 between counter-force girder steel 4 and bearing plate 3.Counter-force girder steel 4 as it is shown in figure 5, include girder 6, girder 6
As in figure 2 it is shown, girder 6 both sides are provided with the connection wing 7, connect the wing 7 as shown in Figure 4, connect the wing 7 and be provided with one group of connecting hole 8, connect
The wing 7 is connected with spar 9 through connecting hole 8, and spar 9 is as shown in Figure 3.The cross section of girder 6, the connection wing 7 and spar 9 is I-shaped
Shape, the upper lower wing plate and the web that connect the wing 7 all weld with girder 6.Connect and be all provided with on the wing 7 and the upper lower wing plate of spar 9 and web
Having connecting hole 8, the connecting hole 8 connected on the wing 7 on lower wing plate is connected with lower wing plate on spar 9 through wing connecting plate 10；Connect the wing 7 abdomen
The trans-abdominal connecting plate of connecting hole 8 11 on plate is connected with spar 9 web.It is provided with stiffener between girder 6 and the upper lower wing plate of spar 9
12。
Embodiment
When carrying out foundation ditch 1 and constructing, that is dug by the diameter bottom pile holes protecting wall steel pipe 2 is larger, in order to place counter-force steel
Beam 4.During Specific construction, then can place on bearing plate 3 as it is shown in figure 1, first place one piece of bearing plate 3 bottom foundation ditch 1
One jack 5, the most first hangs in foundation ditch 1 by girder 6, and girder 6 is placed on bottom pile holes protecting wall steel pipe 2 straight for in-line sidewards
Footpath relatively large part.Girder 6 both sides are provided with the connection wing 7, and the connection wing 7 of girder 6 both sides forms cross counter-force after being connected with spar
Girder steel 4.Spar 9 can only in foundation ditch 1 be connected the wing 7 and connect, if after in advance spar 9 being connected, cross counter-force steel
Beam 4 just cannot put into foundation ditch.After connecting spar 9, by jack 5, bearing plate 3 is applied pressure, bottom jack 5
Being seated on bearing plate 3, the force-transmitting pole at jack 5 top heads on bottom counter-force girder steel 4, utilizes counter-force girder steel 4 and pile holes protecting wall
Steel pipe 2 provides counter-force with the side friction of foundation ditch 1, obtains supporting course bearing capacity and obtains result of the test.
Claims (5)
1. the test method being applicable to deep supporting course bearing capacity, it is characterised in that: when the method is by foundation pit construction, will
It is larger that diameter bottom pile holes protecting wall steel pipe digs, and arranges counter-force girder steel, instead bottom the pile holes protecting wall steel pipe on foundation ditch top
Power girder steel includes that girder, girder both sides are provided with the connection wing, connects the wing and is provided with one group of connecting hole, connects the wing through connecting hole and spar
Connect；The length of girder is more than pile holes protecting wall diameter of steel tube and less than the foundation ditch diameter bottom pile holes protecting wall steel pipe；Counter-force girder steel
It is connected with bottom pile holes protecting wall steel pipe, bottom foundation ditch, then places bearing plate, between bearing plate and counter-force girder steel, arrange thousand
Jin top, is pressed by jack pair bearing plate, utilizes counter-force girder steel and pile holes protecting wall steel pipe to carry with the side friction of stake holes
For counter-force, obtain the result of the test of supporting course bearing capacity.
2. for an assay device for method described in claim 1, including the pile holes protecting wall steel pipe being located at foundation ditch (1) top
(2) and be located at foundation ditch (1) bottom bearing plate (3)；It is characterized in that: pile holes protecting wall steel pipe (2) bottom is with counter-force girder steel (4) even
Connect, between counter-force girder steel (4) and bearing plate (3), be provided with jack (5)；Counter-force girder steel (4) includes girder (6), girder (6) both sides
It is provided with the connection wing (7), connects the wing (7) and be provided with one group of connecting hole (8), connect the wing (7) and be connected with spar (9) through connecting hole (8).
Assay device the most according to claim 2, it is characterised in that: described girder (6), the connection wing (7) and the horizontal stroke of spar (9)
Cross section is I-shaped, and the upper lower wing plate and the web that connect the wing (7) all weld with girder (6).
Assay device the most according to claim 3, it is characterised in that: the upper lower wing plate of the described connection wing (7) and spar (9) and
It is equipped with connecting hole (8) on web, connects the connecting hole (8) on the upper lower wing plate of the wing (7) on wing connecting plate (10) with spar (9)
Lower wing plate connects；Connecting hole (8) the trans-abdominal connecting plate (11) connected on the wing (7) web is connected with spar (9) web.
Assay device the most according to claim 4, it is characterised in that: between the upper lower wing plate of described girder (6) and spar (9)
It is provided with stiffener (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410187758.0A CN104032720B (en) | 2014-05-06 | 2014-05-06 | It is applicable to test method and the device of deep supporting course bearing capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410187758.0A CN104032720B (en) | 2014-05-06 | 2014-05-06 | It is applicable to test method and the device of deep supporting course bearing capacity |
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| Publication Number | Publication Date |
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| CN104032720A CN104032720A (en) | 2014-09-10 |
| CN104032720B true CN104032720B (en) | 2016-08-17 |
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| CN201410187758.0A Active CN104032720B (en) | 2014-05-06 | 2014-05-06 | It is applicable to test method and the device of deep supporting course bearing capacity |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106480867B (en) * | 2015-08-26 | 2019-05-21 | 上海勘测设计研究院有限公司 | A kind of large diameter steel pipe pile lateral wall monitoring soil pressure meter mounting structure |
| CN108342961B (en) * | 2018-04-24 | 2023-10-10 | 华昕设计集团有限公司 | Device for providing counter force for urban road static detection construction |
| CN109914494A (en) * | 2019-03-28 | 2019-06-21 | 中交路桥建设有限公司 | A kind of pile foundation soil layer utmost tip resistance test macro |
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|---|---|---|---|---|
| CN101250866A (en) * | 2007-12-21 | 2008-08-27 | 中国科学院水利部成都山地灾害与环境研究所 | Method for rapidly testing in situ foundation bearing capacity and deformation modulus |
| CN201386291Y (en) * | 2009-02-10 | 2010-01-20 | 叶长青 | Static load test device of composite foundation |
| CN202175940U (en) * | 2011-07-08 | 2012-03-28 | 华侨大学 | Test device for bearing capacity of foundation soil |
| CN102465539A (en) * | 2010-11-02 | 2012-05-23 | 陕西龙海工程建设有限公司 | Deep flat plate load testing device |
| CN203530950U (en) * | 2013-11-07 | 2014-04-09 | 贵州中建建筑科研设计院有限公司 | Combined type stack counterforce standard block |
| CN203569600U (en) * | 2013-11-18 | 2014-04-30 | 广州建设工程质量安全检测中心有限公司 | Pile bottom bedrock load test device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4472504B2 (en) * | 2004-12-14 | 2010-06-02 | 大豊建設株式会社 | Ground strength test apparatus and ground strength test method |
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2014
- 2014-05-06 CN CN201410187758.0A patent/CN104032720B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101250866A (en) * | 2007-12-21 | 2008-08-27 | 中国科学院水利部成都山地灾害与环境研究所 | Method for rapidly testing in situ foundation bearing capacity and deformation modulus |
| CN201386291Y (en) * | 2009-02-10 | 2010-01-20 | 叶长青 | Static load test device of composite foundation |
| CN102465539A (en) * | 2010-11-02 | 2012-05-23 | 陕西龙海工程建设有限公司 | Deep flat plate load testing device |
| CN202175940U (en) * | 2011-07-08 | 2012-03-28 | 华侨大学 | Test device for bearing capacity of foundation soil |
| CN203530950U (en) * | 2013-11-07 | 2014-04-09 | 贵州中建建筑科研设计院有限公司 | Combined type stack counterforce standard block |
| CN203569600U (en) * | 2013-11-18 | 2014-04-30 | 广州建设工程质量安全检测中心有限公司 | Pile bottom bedrock load test device |
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| CN104032720A (en) | 2014-09-10 |
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