CN103603381A - Detection device and detection method for buttress single-pile vertical uplift static load test - Google Patents
Detection device and detection method for buttress single-pile vertical uplift static load test Download PDFInfo
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- CN103603381A CN103603381A CN201310651623.0A CN201310651623A CN103603381A CN 103603381 A CN103603381 A CN 103603381A CN 201310651623 A CN201310651623 A CN 201310651623A CN 103603381 A CN103603381 A CN 103603381A
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Abstract
The invention discloses a detection device for a buttress single-pile vertical uplift static load test. The detection device comprises a buttress, a crossbeam, a lifting jack, a supporting plate, a tension bar and a linkage cylinder, wherein the crossbeam is lapped on the buttress; the lifting jack is hoisted in the middle of the crossbeam; the supporting plate covers the top end of the lifting jack; a tension bar hole is formed in the supporting plate; the tension bar penetrates through the tension bar hole; the upper end of the tension bar is connected with the supporting plate through a nut; the linkage cylinder is suspended at the lower end of the tension bar. Meanwhile, the invention correspondingly discloses a detection method. The device has the advantages of simple implementation structure, low cost, simplicity in operation and repeated use.
Description
Technical field
The present invention relates to engineering pile checkout equipment field, particularly, relate to a kind of buttress method unit for single-pile vertical anti-pulling static loading test checkout gear and detection method thereof.
Background technology
Unit for single-pile vertical anti-pulling static loading test is that the stake in the middle of engineering is carried out to a kind of method of testing detection, to determine vertical ultimate uplift resistance of single pile; Judge whether vertically pulling-resistant bearing capacity meets design requirement; By Internal forces and deformation test, measure the resistance to plucking frictional resistance of stake.
Existing anchored pile-testing method, be subject to two engineering piles of inspection stake both sides symmetrical construction amount to provide counter-force as anchoring pile in test, to test detection.The method, two rhizopodiums of need constructing are so that the engineering pile of uplift resistance to be provided, and testing expenses are high, and after test, anchoring pile goes out of use, and causes waste.Therefore there is the defects such as cost is high, complicated operation.
Summary of the invention
The object of the invention is to, for the problems referred to above, propose a kind of buttress method unit for single-pile vertical anti-pulling static loading test checkout gear and detection method thereof, simple with implementation structure, with low cost, simple to operate and reusable advantage.
For achieving the above object, the technical solution used in the present invention is:
A kind of buttress method unit for single-pile vertical anti-pulling static loading test checkout gear, comprise buttress, crossbeam, jack, supporting plate, stayed mast and link cylinder, the horizontal buttress top that rides over of described crossbeam, lifting jack in the middle of this crossbeam, described jack top mounts cover supporting plate, on this supporting plate, tie rod hole is set, and in described tie rod hole, installs stayed mast, the upper end of this stayed mast is connected by nut with supporting plate, the lower end suspention link cylinder of this stayed mast.
According to a preferred embodiment of the invention, above-mentioned tie rod hole is 8, and 8 tie rod holes are set to two rows on supporting plate, and every row arranges 4 tie rod holes.
According to a preferred embodiment of the invention, the lower end of described link cylinder and castinplace pile extend main muscle and weld together.
According to a preferred embodiment of the invention, also comprise datum line beam, magnetic stand and displacement meter, the symmetrical buttress inner side that is arranged on of described datum line beam, installs magnetic stand on described datum line beam, on described magnetic stand, sets up displacement meter.
According to a preferred embodiment of the invention, described jack is connected by pipeline with high-pressure oil pump.
Accordingly also disclose a kind of detection method of using buttress method unit for single-pile vertical anti-pulling static loading test checkout gear, comprise the following steps:
The all grounds of detected engineering pile stake are flattened to compacting, fill absolute altitude high to stake top mark, the step of placing above-mentioned experiment detection device in stake week;
To link cylinder and castinplace pile and extend main muscle firm welding, screw square bolt on supporting plate, keep the step of the slight tension of stayed mast;
By high-pressure oil pump, jack is loaded, the lifting piston lifting supporting plate of jack, supporting plate drives stayed mast, stayed mast lifting link cylinder, in the time of the lifting of link cylinder, drive the main muscle of engineering pile of tight firm welding, make like this engineering pile top produce drawing effect, complete the step of detection.
According to a preferred embodiment of the invention, above-mentioned by detected engineering pile stake week ground flatten compacting, fill absolute altitude extremely in a high step of top mark, also protect and at periphery foundation soil, carry out rubble layering and change the step of filling out compacting.
Technical scheme of the present invention has following beneficial effect:
Technical scheme of the present invention, provides support power by buttress, and through strength transmission, the uplift resistance that finally provides engineering detecting to need, utilizes jack to drive stayed mast to drive the main muscle of engineering pile, completes detection.Thereby reach object simple in structure, simple to operate, and substituted anchoring pile with buttress, and because buttress can reuse, and the cost of buttress is relatively cheaper than anchoring pile, has reached with low cost, and reusable object.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is the structural representation of the buttress method unit for single-pile vertical anti-pulling static loading test checkout gear described in the embodiment of the present invention.
By reference to the accompanying drawings, in the embodiment of the present invention, Reference numeral is as follows:
1, buttress; 2, crossbeam; 3, jack; 4, supporting plate; 5, stayed mast; 6, link cylinder; 7, datum line beam; 8, magnetic stand; 9, displacement meter; 10, engineering pile; 11, ground.
The specific embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein, only for description and interpretation the present invention, is not intended to limit the present invention.
As shown in Figure 1, a kind of buttress method unit for single-pile vertical anti-pulling static loading test checkout gear, comprise buttress 1, crossbeam 2, jack 3, supporting plate 4, stayed mast 5 and link cylinder 6, horizontal buttress 1 top that rides over of crossbeam 2, lifting jack 3 in the middle of this crossbeam 2, jack 3 tops mount cover supporting plate 4, on this supporting plate 4, tie rod hole is set, in tie rod hole, install stayed mast 5, the upper end of this stayed mast 5 is connected by nut with supporting plate 4, the lower end suspention link cylinder 6 of this stayed mast 5.
Wherein, tie rod hole is 8, and 8 tie rod holes are set to two rows on supporting plate, and every row arranges 4 tie rod holes.The lower end of link cylinder and castinplace pile extend main muscle and weld together.Also comprise datum line beam 7, magnetic stand 8 and displacement meter 9, the symmetrical buttress inner side that is arranged on of datum line beam, installs magnetic stand on datum line beam, set up displacement meter on magnetic stand.Jack is connected by pipeline with high-pressure oil pump.
Disclose a kind of detection method of using buttress method unit for single-pile vertical anti-pulling static loading test checkout gear simultaneously, comprise the following steps:
The all grounds of detected engineering pile stake are flattened to compacting, fill absolute altitude high to stake top mark, the step of placing above-mentioned experiment detection device in stake week;
To link cylinder and castinplace pile and extend main muscle firm welding, screw square bolt on supporting plate, keep the step of the slight tension of stayed mast;
By high-pressure oil pump, jack is loaded, the lifting piston lifting supporting plate of jack, supporting plate drives stayed mast, stayed mast lifting link cylinder, in the time of the lifting of link cylinder, drive the main muscle of engineering pile of tight firm welding, make like this engineering pile top produce drawing effect, complete the step of detection.
Wherein, by detected engineering pile stake week ground flatten compacting, fill absolute altitude extremely in a high step of top mark, also protect and at periphery foundation soil, carry out rubble layering and change the step of filling out compacting.
Concrete measuring process is as follows:
The all grounds of detected engineering pile stake are flattened to compacting, according to the requirement of provided bearing capacity of foundation soil value, ground is tamped to processing, if desired periphery foundation soil is carried out to rubble layering and change and fill out compacting to being enough to provide bearing capacity of foundation soil requirement, fill absolute altitude high to a top mark.At stake week symmetric position placement buttress 1, buttress possesses enough proof strengths.The horizontal crossbeam 2 of taking in buttress 1 top, lifting jack 3 in the middle of crossbeam 2, jack 3 provides power.Jack 3 tops cover the supporting plate 4 of making in advance, supporting plate 4 front and back two each remaining 4 tie rod holes of row.Then before and after putting in tie rod hole, 2 arrange totally 8 stayed masts 5, stayed mast 5 upper ends are connected with supporting plate 4 nuts, stayed mast 5 lower end suspentions even link cylinder 6, link cylinder 6 extends main muscle with castinplace pile around and firmly welds, in case test testing process generation security incident, finally screw square bolt on supporting plate 4, keep the slight tension of stayed mast.
At engineering pile 10(castinplace pile) symmetrical reference for installation beam 7, on datum line beam 7, lay magnetic stand 8, on magnetic stand 8, set up displacement meter 9.At jack 3, connect high-pressure oil pipe and high-pressure oil pump loading equipemtn in addition.
Then start-up loading system, by high-pressure oil pump, jack is loaded, the lifting piston lifting supporting plate 4 of jack 3, supporting plate 4 drives stayed mast 5, stayed mast 5 lifting link cylinders 6, the main muscle of engineering pile that drives the tight firm welding of circumference in the time of 6 lifting of link cylinder, makes engineering pile top produce drawing effect like this, has finally realized the object detecting.
Secondly, according to test, detecting code requirement starts to load step by step.
By buttress, provide support power, through strength transmission, the uplift resistance that finally provides engineering detecting to need.Observe, according to displacement meter 9 readings, can observe stake and withstand on lifting displacement in every one-level loading procedure, according to lifting amount, carry out analytical calculation engineering pile unit for single-pile vertical anti-pulling power value.
Uplift bearing capacity scope: the checkout gear of the technical program can detect between single pile uplift resistance design limit value scope 0～10000kN.Buttress: can symmetrical place one or organize buttress more, realize safe and reliable resistant platform buttress.
Technical scheme of the present invention has following characteristics:
One, the anchoring pile (cancelling after detecting) that saves conventional art, substitutes anchoring pile with buttress (can reuse).Than conventional art less expensive, practicality, quick.When engineering pile is examined, on conventional art, need, in two costs of examine stake both sides symmetrical construction compared with large-engineering stake, as anchoring pile, could realize providing resistance to plucking counter-force;
Two anchoring pile construction costs generally, between 100,000 to 200,000, are made two buttress expenses and are only needed thousands of first expenses, highlight save trouble and labor, economical and practical.
Two, be subject to inspection stake unrestricted, can inspect by random samples at random, realized the effect of random sampling observation.Conventional art is limited by anchoring pile, does not have the effect of random sampling observation.
Three, having broken tradition provides resistance to plucking test to detect the pattern of counter-force with anchoring pile, by anchoring pile, pulled out the mechanical behavior that changes into buttress pressurized, the possibility of having stopped anchoring pile pull failure in traditional detection method, structural safety is reliable, has greatly improved the efficiency detecting.
Finally it should be noted that: the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although the present invention is had been described in detail with reference to previous embodiment, for a person skilled in the art, its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (7)
1. a buttress method unit for single-pile vertical anti-pulling static loading test checkout gear, it is characterized in that, comprise buttress, crossbeam, jack, supporting plate, stayed mast and link cylinder, the horizontal buttress top that rides over of described crossbeam, lifting jack in the middle of this crossbeam, described jack top mounts cover supporting plate, on this supporting plate, tie rod hole is set, in described tie rod hole, install stayed mast, the upper end of this stayed mast is connected by nut with supporting plate, the lower end suspention link cylinder of this stayed mast.
2. buttress method unit for single-pile vertical anti-pulling static loading test checkout gear according to claim 1, is characterized in that, above-mentioned tie rod hole is 8, and 8 tie rod holes are set to two rows on supporting plate, and every row arranges 4 tie rod holes.
3. buttress method unit for single-pile vertical anti-pulling static loading test checkout gear according to claim 1 and 2, is characterized in that, the lower end of described link cylinder and castinplace pile extend main muscle and weld together.
4. buttress method unit for single-pile vertical anti-pulling static loading test checkout gear according to claim 3, it is characterized in that, also comprise datum line beam, magnetic stand and displacement meter, the symmetrical buttress inner side that is arranged on of described datum line beam, on described datum line beam, magnetic stand is installed, on described magnetic stand, is set up displacement meter.
5. buttress method unit for single-pile vertical anti-pulling static loading test checkout gear according to claim 4, is characterized in that, described jack is connected by pipeline with high-pressure oil pump.
6. right to use requires a detection method for the buttress method unit for single-pile vertical anti-pulling static loading test checkout gear described in 1 to 5, it is characterized in that, comprises the following steps:
The all grounds of detected engineering pile stake are flattened to compacting, fill absolute altitude high to stake top mark, the step of placing above-mentioned experiment detection device in stake week;
To link cylinder and castinplace pile and extend main muscle firm welding, screw square bolt on supporting plate, keep the step of the slight tension of stayed mast;
By high-pressure oil pump, jack is loaded, the lifting piston lifting supporting plate of jack, supporting plate drives stayed mast, stayed mast lifting link cylinder, in the time of the lifting of link cylinder, drive the main muscle of engineering pile of tight firm welding, make like this engineering pile top produce drawing effect, complete the step of detection.
7. detection method according to claim 6, is characterized in that, above-mentioned by detected engineering pile stake week ground flatten compacting, fill absolute altitude extremely in a high step of top mark, also protect and at periphery foundation soil, carry out rubble layering and change the step of filling out compacting.
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| CN201310651623.0A CN103603381A (en) | 2013-12-08 | 2013-12-08 | Detection device and detection method for buttress single-pile vertical uplift static load test |
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| CN201310651623.0A CN103603381A (en) | 2013-12-08 | 2013-12-08 | Detection device and detection method for buttress single-pile vertical uplift static load test |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104099955A (en) * | 2014-07-16 | 2014-10-15 | 中铁西北科学研究院有限公司 | Foundation pile vertical uplift detecting connector |
| CN104458494A (en) * | 2014-09-28 | 2015-03-25 | 中国电建集团贵阳勘测设计研究院有限公司 | Rock-filled concrete compactness determination method and rock-filled concrete compactness determination device |
| CN105064422A (en) * | 2015-08-11 | 2015-11-18 | 周兆弟 | Tensile detecting device and tensile detecting method of prefabricated pile |
| CN107386343A (en) * | 2017-09-11 | 2017-11-24 | 佛山市公路桥梁工程监测站 | A kind of single pile pullout tests system and its application process |
| CN107524177A (en) * | 2017-09-11 | 2017-12-29 | 佛山市公路桥梁工程监测站 | A kind of large-tonnage single pile pullout tests system and its application process |
| CN112900509A (en) * | 2021-01-28 | 2021-06-04 | 张超宇 | Vertical resistance to plucking load check out test set of building foundation pile |
| CN113916184A (en) * | 2021-10-25 | 2022-01-11 | 中国电建集团成都勘测设计研究院有限公司 | Improved multipoint displacement meter sensor connecting device and connecting method thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104099955A (en) * | 2014-07-16 | 2014-10-15 | 中铁西北科学研究院有限公司 | Foundation pile vertical uplift detecting connector |
| CN104458494A (en) * | 2014-09-28 | 2015-03-25 | 中国电建集团贵阳勘测设计研究院有限公司 | Rock-filled concrete compactness determination method and rock-filled concrete compactness determination device |
| CN105064422A (en) * | 2015-08-11 | 2015-11-18 | 周兆弟 | Tensile detecting device and tensile detecting method of prefabricated pile |
| CN107386343A (en) * | 2017-09-11 | 2017-11-24 | 佛山市公路桥梁工程监测站 | A kind of single pile pullout tests system and its application process |
| CN107524177A (en) * | 2017-09-11 | 2017-12-29 | 佛山市公路桥梁工程监测站 | A kind of large-tonnage single pile pullout tests system and its application process |
| CN107524177B (en) * | 2017-09-11 | 2018-08-07 | 佛山市公路桥梁工程监测站有限公司 | A kind of large-tonnage single pile pullout tests system and its application process |
| CN112900509A (en) * | 2021-01-28 | 2021-06-04 | 张超宇 | Vertical resistance to plucking load check out test set of building foundation pile |
| CN112900509B (en) * | 2021-01-28 | 2022-07-01 | 钦州市建筑工程质量检测中心有限公司 | Vertical resistance to plucking load check out test set of building foundation pile |
| CN113916184A (en) * | 2021-10-25 | 2022-01-11 | 中国电建集团成都勘测设计研究院有限公司 | Improved multipoint displacement meter sensor connecting device and connecting method thereof |
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Application publication date: 20140226 |