CN104480975A - Expanded-base pile expanded-base pile tip cement soil sampling device and sampling method thereof - Google Patents
Expanded-base pile expanded-base pile tip cement soil sampling device and sampling method thereof Download PDFInfo
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- CN104480975A CN104480975A CN201410653924.1A CN201410653924A CN104480975A CN 104480975 A CN104480975 A CN 104480975A CN 201410653924 A CN201410653924 A CN 201410653924A CN 104480975 A CN104480975 A CN 104480975A
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- box
- cement
- expanded
- earth
- blade
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D1/00—Investigation of foundation soil in situ
- E02D1/02—Investigation of foundation soil in situ before construction work
- E02D1/04—Sampling of soil
Abstract
The invention discloses an expanded-base pile expanded-base pile tip cement soil sampling device which comprises an expanded blade, an upper soil sampling box and a lower soil sampling box. One end of the expanded blade is hinged onto a drill rod, the upper soil sampling box is fixed on the expanded blade, the lower soil sampling box is fixed on the drill rod, one end of each of the upper soil sampling box and the lower soil sampling box is open, the upper soil sampling box and the lower soil sampling box are covered to form a closed soil sampling box when the expanded blade is folded, and a cement soil sample outlet is formed in the lower end face of the lower soil sampling box and provided with a plugging bolt. A sampling method of the device includes the steps: controlling folding and expanding of the expanded blade by a hydraulic system, and expanding a base of a pile tip and stirring cement soil at the expanded base by the aid of the expanded blade; sampling pile tip cement soil samples by matching and meshing the upper soil sampling box and the lower soil sampling box when the expanded blade is folded. The device realizes sampling of flexible expanded-base pile expanded-base cement soil, and has the advantages of simplicity in operation and reliable sampling quality.
Description
Technical field
The present invention relates to piling Technology field, particularly relate to a kind of expanded bore pile construction technology, a kind of expanded bore pile expands bottom position stake end cement-soil sampler and sampling method thereof specifically.
Background technology
Along with the development that Chinese Urbanization is built, urban space is more and more nervous, therefore requires that building constantly develops to high stratification, to improve the utilization ratio in space.High-rise building load is large, generally adopts pile foundation, in order to meet the requirements of supporting capacity, often needs improve single pile bearing capacity or increase stake number.Generally, when single piece of stake can provide higher bearing capacity, favourable to the total cost reducing engineering.For concrete a certain project, improve bearing capacity of single pile generally by increase stake footpath form realize, also by increase stake long, stake end is placed in better bearing stratum to realize, but these two kinds of methods also by a relatively large margin improve cost.
When place is distributed with the good bearing stratum of soil nature, adopt expand the end measure can when not increasing a footpath and stake is long raising bearing capacity of single pile by a relatively large margin, pile spacing can be reduced simultaneously, minimizing is still difficult to meet the situation of supporting capacity requirement because load makes stake be abound with greatly, and reduce dimension of platform, saving construction cost by a relatively large margin.
Bottom expanding, the contribution of position to bearing capacity is based upon and himself has on the basis of some strength, meanwhile, also needs effectively to monitor to the stability expanding position, bottom construction quality.Thus, need to seek a kind of easy method and the cement-soil expanding the formation of position, bottom is sampled, obtain corresponding data by unconfined compression strength test etc., thus the construction quality expanding position, bottom is evaluated.
Be typically employed in after cement-soil meets the requirements of curing age at present, utilize the mode of rig drill sampling to obtain stake end cement-soil sample.This kind of method sampling efficiency is low, and cost is high, and meanwhile, when stake is longer, the verticality that ordi-nary drilling machine creeps into comparatively is difficult to ensure card, and the method is difficult to the representative sample of effective taking-up.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned prior art present situation, and provides with low cost, simple to operate, samples accurately and effectively can solve a kind of expanded bore pile expansion bottom position stake end cement-soil sampler and sampling method thereof that expand a bottom position stake end cement-soil sampling difficult problem without the need to follow-up additional effort.
The present invention solves the problems of the technologies described above adopted technical scheme: a kind of expanded bore pile expands bottom position stake end cement-soil sampler, this device comprise one end hinge be arranged on expansion blade that drilling rod can be expanded and draw in by HYDRAULIC CONTROL SYSTEM and be fixedly mounted on this expansion blade on fetch earth box be fixedly mounted on the box that to fetch earth under on drilling rod, on fetch earth box and under the box that fetches earth be the box body that one end is open end, and when expanding blade gathering, on fetch earth box just with under the box that fetches earth cover the closed box that fetches earth of formation one mutually, under box lower surface of fetching earth be shaped with cement-soil sample export, this cement-soil sample export is equipped with shutoff bolt.
For optimizing technique scheme, the measure taked also comprises:
Above-mentioned drilling rod upper hinge is installed two and is expanded blade, and two expand blade at a distance of 180 degree of distributions on drilling rod, each expansion blade is all provided with the box that fetches earth, correspondingly each fetches earth box all to there being the box that fetches earth.
Fetch earth on above-mentioned box and under the box that fetches earth all there is the peripheric surface surrounded by steel plate materials, the bottom surface of the box that above fetches earth is made up of the part surface expanding blade, under the fetch earth bottom surface of box be made up of the part surface of drilling rod.
The steel plate thickness of above-mentioned steel plate materials is 0.3cm to 3cm.
The open end of box of fetching earth on above-mentioned is shaped with inner ring location and protrudes, the open end of the box that correspondingly fetches earth down be shaped with locate with this inner ring protrude match in loop mapping recessed; The length that inner ring location is protruded is 1cm to 5cm, and the degree of depth that correspondingly, loop mapping is recessed is 1cm to 5cm.
The open end of box of fetching earth on above-mentioned is shaped with outer shroud location and protrudes, and the open end of the box that correspondingly fetches earth down is shaped with locate with this outer shroud that to protrude the outer loop mapping matched recessed; The length that outer shroud location is protruded is 1cm to 5cm, and the degree of depth that correspondingly outer loop mapping is recessed is 1cm to 5cm.
The diameter of cement-soil sample export of box of fetching earth under above-mentioned is 2cm to 10cm.
The box that fetches earth under above-mentioned is arranged on the position relatively near drill bit on drilling rod, expands the top of the box that to fetch earth under the hinged end of blade is positioned at.
The expansion angle of above-mentioned expansion blade is less than 90 degree.
Present invention also offers the sampling method that a kind of expanded bore pile expands bottom position stake end cement-soil sampler, the method comprises the following steps:
A), by the expansion blade on HYDRAULIC CONTROL SYSTEM drilling rod, expansion blade is expanded under the effect of hydraulic pressure and completes according to the requirement of design to expand end operation;
B), rotate and oscilaltion drilling rod, by the expansion blade of expansion, the cement-soil expanding position, bottom is stirred;
C), by HYDRAULIC CONTROL SYSTEM expand blade to draw in, utilize be arranged on expand on blade on to fetch earth box and be arranged on the box that to fetch earth under on drilling rod and match occlusion, be full of cement-soil in the box that makes to fetch earth, complete the collection of stake end cement-soil sample;
D), extract drilling rod drive the box that fetches earth make to fetch earth box to ground above position, then spiral takes off the shutoff bolt of shutoff at cement-soil sample export, adopts the stake end cement-soil sample that container collection obtains.
Compared with prior art, one end of the present invention hinge be arranged on expansion blade that drilling rod can be expanded and draw in by HYDRAULIC CONTROL SYSTEM and be fixedly mounted on this expansion blade on fetch earth box be fixedly mounted on the box that to fetch earth under on drilling rod, on fetch earth box and under the box that fetches earth be the box body that one end is open end, and when expanding blade gathering, on fetch earth box just with under the box that fetches earth cover the closed box that fetches earth of formation one mutually, under box lower surface of fetching earth be shaped with cement-soil sample export, this cement-soil sample export is equipped with shutoff bolt.Namely the present invention completes sampling operation by the box that fetches earth in work progress, without the need to additional effort, sampling is convenient, the cement-soil sample taken out is representative, sampling expense not outside amount, there is feature with low cost, simple to operate, effectively can solve in prior art the difficult problem expanding bottom position stake end cement-soil sampling difficulty.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram that the present invention expands when expansion blade does not sample state;
Fig. 2 is the overall structure schematic diagram of the present invention when expanding blade gathering place sample states;
Fig. 3 be fetch earth box under the present invention face structural representation;
Fig. 4 be the present invention fetches earth box face structural representation;
Fig. 5 be the present invention fetches earth box and under fetch earth box interlocking pattern time horizontal sectional structure chart;
Fig. 6 is the close-up schematic view at K place in Fig. 5;
Fig. 7 be the present invention fetches earth box and under to fetch earth the interlocking pattern figure of box;
Fig. 8 is the lateral view of box of fetching earth under being provided with shutoff bolt.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are described in further detail.
Fig. 1 to Fig. 8 is structural representation of the present invention.
Reference numeral is wherein: drilling rod 1, expand blade 2, on fetch earth box 3, inner ring location protrusion 31, under fetch earth that box 4, cement-soil sample export 4a, interior loop mapping are recessed 41, shutoff bolt 5.
As shown in Figures 1 to 8, a kind of expanded bore pile of the present invention expands bottom position stake end cement-soil sampler, this device comprise one end hinge be arranged on expansion blade 2 that drilling rod 1 can be expanded and draw in by HYDRAULIC CONTROL SYSTEM and be fixedly mounted on this expansion blade 2 on fetch earth box 3 be fixedly mounted on the box 4 that to fetch earth under on drilling rod 1, on fetch earth box 3 and under the box 4 that fetches earth be the box body that one end is open end, and expand blade 2 when drawing in, on fetch earth box 3 just with under the box 4 phase lid that fetches earth be engaged the closed box that fetches earth of formation one, under box 4 lower surface of fetching earth be shaped with cement-soil sample export 4a, this cement-soil sample export 4a is equipped with shutoff bolt 5.For the sampling of stake end cement-soil in prior art, normally after cement-soil meets the requirements of curing age, the mode of rig drill sampling is utilized to obtain stake end cement-soil sample.This kind of method sampling efficiency is low, and cost is high, and meanwhile, when stake is longer, the verticality that ordi-nary drilling machine creeps into comparatively is difficult to ensure card, and therefore the method is difficult to the representative sample of effective taking-up.The present invention by be arranged on expand on blade 2 on fetch earth box 3 be arranged on cooperatively interacting of the box 4 that to fetch earth under on drilling rod 1, in the process of expanded bore pile construction, namely complete the sampling operation of stake end cement-soil sample by the box that fetches earth, the cement-soil sample thus taken out has very strong representativeness.Structure of the present invention is simple, with low cost, sampling facility, effectively can solve without the need to producing extra sampling expense the difficult problem expanding bottom position stake end cement-soil sample difficulty.
For optimizing the structure of this product further, in embodiment as depicted in figs. 1 and 2, drilling rod 1 upper hinge of the present invention is installed two and is expanded blade 2, two expand blade 2 on drilling rod 1 at a distance of 180 degree of distributions, each expansion blade 2 is all provided with the box 3 that fetches earth, correspondingly each fetches earth box 3 all to there being the box 4 that fetches earth.Three or four expansion blades 2 also can be set certainly as required, correspondingly also increase the box that fetches earth.
In embodiment, above fetch earth box 3 and under the box 4 that fetches earth all there is the peripheric surface surrounded by steel plate materials, the bottom surface of the box 3 that above fetches earth is made up of the part surface expanding blade 2, under the fetch earth bottom surface of box 4 be made up of the part surface of drilling rod 1.
The steel plate thickness of above-mentioned steel plate materials is preferably 0.3cm to 3cm.
In embodiment, as shown in Figures 3 to 6, the open end of the box 3 that above fetches earth is shaped with inner ring location protrusion 31, the open end of the box 4 that correspondingly fetches earth down be shaped with locate with this inner ring protrusion 31 match in loop mapping be recessed into 41; The length of inner ring location protrusion 31 is 1cm to 5cm, and correspondingly, loop mapping is recessed into the degree of depth of 41 is 1cm to 5cm.The width that inner ring location protrusion 31 width and interior loop mapping are recessed into 41 is also identical
Certainly in actual fabrication, also can use another kind of technical scheme, the open end of the box 3 that fetches earth is namely shaped with outer shroud location and protrudes, and the open end of this box 4 that fetches earth at present is then shaped with locate with this outer shroud that to protrude the outer loop mapping matched recessed; The length that outer shroud location is protruded is 1cm to 5cm, and the degree of depth that correspondingly outer loop mapping is recessed is 1cm to 5cm.The width that in like manner width of outer shroud location protrusion is also recessed with outer loop mapping is identical.
In embodiment, the diameter of the cement-soil sample export 4a of the box 4 that fetches earth under of the present invention is 2cm to 10cm.
In embodiment, can see from Fig. 1 and Fig. 2, under the box 4 that fetches earth be arranged on position relatively near drill bit on drilling rod 1, the top of the box 4 that fetches earth under the hinged end expanding blade 2 is positioned at.
The expansion angle expanding blade 2 is less than 90 degree.
A kind of expanded bore pile of the present invention expands the sampling method of bottom position stake end cement-soil sampler, and the method comprises the following steps:
A), by the expansion blade 2 on HYDRAULIC CONTROL SYSTEM drilling rod 1, expansion blade 2 is expanded under the effect of hydraulic pressure and completes according to the requirement of design to expand end operation;
B), rotate and oscilaltion drilling rod 1, by the expansion blade 2 of expansion, the cement-soil expanding position, bottom is stirred;
C), by HYDRAULIC CONTROL SYSTEM expand blade 2 to draw in, utilize be arranged on expand on blade 2 on to fetch earth box 3 and be arranged on the box 4 that to fetch earth under on drilling rod 1 and match occlusion, be full of cement-soil in the box that makes to fetch earth, complete the collection of stake end cement-soil sample;
D), extract drilling rod 1 drive the box that fetches earth make to fetch earth box to ground above position, then spiral takes off the shutoff bolt 5 of shutoff at cement-soil sample export 4a, adopts the stake end cement-soil sample that container collection obtains.
The present invention expands the gathering of blade and expansion by HYDRAULIC CONTROL SYSTEM, when expanding expansion blade, utilizing and expanding blade and expand end operation and to the stirring of expanding position, bottom cement-soil along with the rotation of drilling rod completes stake end; When expanding blade and drawing in, utilize be arranged on expand on blade on to fetch earth box and be arranged on the box that to fetch earth under on drilling rod and match occlusion, complete the sampling of stake end cement-soil sample; After the box that fetches earth extracts above position, ground with drilling rod, spiral takes off the shutoff bolt of shutoff at cement-soil sample export, the stake end cement-soil sample that container collection can be adopted to obtain.The present invention is owing to directly expanding the sampling of position, bottom at expanded bore pile, thus the cement-soil sample taken out has very strong representativeness, and sampling method of the present invention, can solve without the need to producing extra sampling expense the difficult problem expanding bottom position stake end cement-soil sample difficulty effectively.
Claims (10)
1. an expanded bore pile expands bottom position stake end cement-soil sampler, it is characterized in that: described device comprise one end hinge be arranged on the upper expansion blade (2) that can expand and draw in by HYDRAULIC CONTROL SYSTEM of drilling rod (1) and be fixedly mounted on this expansion blade (2) on to fetch earth box (3) and be fixedly mounted on the box (4) that to fetch earth under on drilling rod (1), fetch earth on described box (3) and under the box (4) that fetches earth be the box body that one end is open end, and when described expansion blade (2) draws in, fetch earth on described box (3) just with described under the box (4) that fetches earth cover the closed box that fetches earth of formation one mutually, box (4) lower surface of fetching earth under described is shaped with cement-soil sample export (4a), this cement-soil sample export (4a) is equipped with shutoff bolt (5).
2. a kind of expanded bore pile according to claim 1 expands bottom position stake end cement-soil sampler, it is characterized in that: described drilling rod (1) upper hinge is installed two and expanded blade (2), expansion blade (2) described in two is upper at a distance of 180 degree of distributions at drilling rod (1), expansion blade (2) described in each is all provided with the box that fetches earth (3), correspondingly each fetches earth box (3) all to there being the box (4) that fetches earth.
3. a kind of expanded bore pile according to claim 2 expands bottom position stake end cement-soil sampler, it is characterized in that: the box that fetches earth on described (3) and under the box (4) that fetches earth all there is the peripheric surface surrounded by steel plate materials, fetch earth on the described bottom surface of box (3) is made up of the part surface expanding blade (2), and the bottom surface of the box that fetches earth under described (4) is made up of the part surface of drilling rod (1).
4. a kind of expanded bore pile according to claim 3 expands bottom position stake end cement-soil sampler, it is characterized in that: the steel plate thickness of described steel plate materials is 0.3cm to 3cm.
5. a kind of expanded bore pile according to claim 4 expands bottom position stake end cement-soil sampler, it is characterized in that: the open end of the box that fetches earth on described (3) is shaped with inner ring location and protrudes (31), the open end of the box (4) that fetches earth under is correspondingly shaped with the interior loop mapping recessed (41) of locating with this inner ring and protruding and (31) matching; The length that (31) are protruded in described inner ring location is 1cm to 5cm, and the degree of depth of correspondingly described interior loop mapping recessed (41) is 1cm to 5cm.
6. a kind of expanded bore pile according to claim 4 expands bottom position stake end cement-soil sampler, it is characterized in that: the open end of the box that fetches earth on described (3) is shaped with outer shroud location and protrudes, the open end of the box (4) that fetches earth under correspondingly described is shaped with locate with this outer shroud that to protrude the outer loop mapping matched recessed; The length that described outer shroud location is protruded is 1cm to 5cm, and the degree of depth that correspondingly described outer loop mapping is recessed into is 1cm to 5cm.
7. a kind of expanded bore pile according to claim 5 or 6 expands bottom position stake end cement-soil sampler, it is characterized in that: the diameter of the cement-soil sample export (4a) of the box that fetches earth under described (4) is 2cm to 10cm.
8. a kind of expanded bore pile according to claim 7 expands bottom position stake end cement-soil sampler, it is characterized in that: the box that fetches earth under described (4) is arranged on relatively near the position of drill bit on drilling rod (1), the top of box (4) of fetching earth under the hinged end of described expansion blade (2) is positioned at.
9. a kind of expanded bore pile according to claim 8 expands bottom position stake end cement-soil sampler, it is characterized in that: the expansion angle of described expansion blade (2) is less than 90 degree.
10. expanded bore pile as claimed in claim 1 expands a sampling method for bottom position stake end cement-soil sampler, it is characterized in that: the method comprises the following steps:
A), by the expansion blade (2) on HYDRAULIC CONTROL SYSTEM drilling rod (1), expansion blade (2) is expanded under the effect of hydraulic pressure and completes according to the requirement of design to expand end operation;
B), rotate and oscilaltion drilling rod (1), by the expansion blade (2) of expansion, the cement-soil expanding position, bottom is stirred;
C), expand blade (2) by HYDRAULIC CONTROL SYSTEM to draw in, utilization be arranged on expand on blade (2) on to fetch earth box (3) and be arranged on the box (4) that to fetch earth under on drilling rod (1) and match occlusion, make to fetch earth in box and be full of cement-soil, complete the collection of stake end cement-soil sample;
D), extract drilling rod (1) drive the box that fetches earth make to fetch earth box to ground above position, spiral takes off the shutoff bolt (5) of shutoff at cement-soil sample export (4a) again, adopts the stake end cement-soil sample that container collection obtains.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410653924.1A CN104480975B (en) | 2014-11-18 | 2014-11-18 | A kind of expanded bore pile expands bottom position stake end cement-soil sampler and sampling method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410653924.1A CN104480975B (en) | 2014-11-18 | 2014-11-18 | A kind of expanded bore pile expands bottom position stake end cement-soil sampler and sampling method thereof |
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| Publication Number | Publication Date |
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| CN104480975A true CN104480975A (en) | 2015-04-01 |
| CN104480975B CN104480975B (en) | 2015-12-02 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH102177A (en) * | 1996-06-17 | 1998-01-06 | Hitachi Constr Mach Co Ltd | Excavating equipment for working in widened bottom hole and working method at widened bottom hole |
| CN2698954Y (en) * | 2004-05-09 | 2005-05-11 | 王刚 | Expanding bucket for drilling and pouring expanded-base pile |
| CN102678054A (en) * | 2012-05-16 | 2012-09-19 | 阜南县奋进机械制造有限公司 | Spirally bottom-expanding integrated drill bit |
| CN102998147A (en) * | 2012-12-25 | 2013-03-27 | 北京科技大学 | Field sampling device and sampling method of filling slurry |
| CN204238267U (en) * | 2014-11-18 | 2015-04-01 | 中淳高科桩业股份有限公司 | A kind of expanded bore pile expands bottom position stake end cement-soil sampler |
-
2014
- 2014-11-18 CN CN201410653924.1A patent/CN104480975B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH102177A (en) * | 1996-06-17 | 1998-01-06 | Hitachi Constr Mach Co Ltd | Excavating equipment for working in widened bottom hole and working method at widened bottom hole |
| CN2698954Y (en) * | 2004-05-09 | 2005-05-11 | 王刚 | Expanding bucket for drilling and pouring expanded-base pile |
| CN102678054A (en) * | 2012-05-16 | 2012-09-19 | 阜南县奋进机械制造有限公司 | Spirally bottom-expanding integrated drill bit |
| CN102998147A (en) * | 2012-12-25 | 2013-03-27 | 北京科技大学 | Field sampling device and sampling method of filling slurry |
| CN204238267U (en) * | 2014-11-18 | 2015-04-01 | 中淳高科桩业股份有限公司 | A kind of expanded bore pile expands bottom position stake end cement-soil sampler |
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| CN104480975B (en) | 2015-12-02 |
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Effective date of registration: 20180910 Address after: 315105 159 building 23, Qiming Road, Yinzhou District, Ningbo, Zhejiang, 159 Patentee after: Ningbo Zhong Chun Pile Foundation Engineering Technology Co., Ltd. Address before: 315145 Zhongchun Gaoke Pile Co., Ltd. No. 166 Linjiang Road, Ningbo Economic and Technological Development Zone, Zhejiang Province Patentee before: Zhongchun Gaoke Pile Industry Co., Ltd. |
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