CN106400854A - Embedded structure for detecting pile tip sediment and bearing stratum and detection method - Google Patents
Embedded structure for detecting pile tip sediment and bearing stratum and detection method Download PDFInfo
- Publication number
- CN106400854A CN106400854A CN201610964777.9A CN201610964777A CN106400854A CN 106400854 A CN106400854 A CN 106400854A CN 201610964777 A CN201610964777 A CN 201610964777A CN 106400854 A CN106400854 A CN 106400854A
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- China
- Prior art keywords
- detection
- pipe
- sediment
- built
- foundation pile
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- 238000001514 detection method Methods 0.000 title claims abstract description 54
- 239000013049 sediment Substances 0.000 title claims abstract description 28
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 230000002787 reinforcement Effects 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- 239000011435 rock Substances 0.000 claims description 6
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 18
- 238000012360 testing method Methods 0.000 description 14
- 238000005516 engineering process Methods 0.000 description 10
- 238000005553 drilling Methods 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000002716 delivery method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention discloses an embedded structure for detecting pile tip sediment and a bearing stratum and a detection method. The embedded structure comprises a foundation pile (1). An embedded pipe (2) is arranged in the foundation pile (1). The embedded pipe (2) is through in the length direction of the foundation pile (1). The embedded structure has the advantages of being low in detection cost, short in detection period, short in construction period and high in detection accuracy degree.
Description
Technical field
The present invention relates to engineering quality inspection of the piles checking and accepting technology field.Particularly a kind of detection sediment of the hole bottom and supporting course
Pre-buried structure and detection method.
Background technology
In engineering with civil buildings, in order to detect the quality of engineering foundation pile and provide acceptance basis it is often necessary to detect
Sediment of the hole bottom thickness and pile bottom force holding layer rock proterties.Detect the method being mainly analyzed, the party using rig core boring sampling
Method is holed from stake top, carries out boring and coring to sediment of the hole bottom thickness and pile bottom force holding layer rock, so after drilling the concrete of foundation pile
Afterwards core sample is analyzed.Although the method testing result is intuitive, clear, core drilling method high cost, long in time limit, detection cycle
Long, and the method has certain destruction to stake, so the foundation pile only extracting less ratio during detection carries out drilling core checking, because
This detection sample is little, and then affects the degree of accuracy of testing result.
Content of the invention
It is an object of the invention to, a kind of detection sediment of the hole bottom and the pre-buried structure of supporting course and detection method are provided.This
Invention has the characteristics that testing cost is low, detection cycle is short, the construction period is short and accuracy in detection is high.
Technical scheme：A kind of detection sediment of the hole bottom and the pre-buried structure of supporting course, including foundation pile, set in foundation pile
It is equipped with built-in pipe；Described built-in pipe is along the length direction insertion of foundation pile.
In the pre-buried structure of aforesaid detection sediment of the hole bottom and supporting course, described built-in pipe is fixed in described foundation pile
Steel reinforcement cage on.
In the pre-buried structure of aforesaid detection sediment of the hole bottom and supporting course, the two ends of described built-in pipe are equipped with plastic seal
Lid.
The detection method of the pre-buried structure of aforesaid detection sediment of the hole bottom and supporting course, detects in the steps below：
A, built-in pipe is fixed on steel reinforcement cage；
B, above-mentioned steel reinforcement cage is put in base pile hole, cast concrete forms foundation pile afterwards；
C, drill bit is directly carried out boring and coring to the supporting course at sediment of the hole bottom and stake bottom through built-in pipe；
D, the core sample to boring and coring are edited and recorded, and judge sediment of the hole bottom thickness and supporting course rock proterties.
In step a described in the detection method of pre-buried structure of aforesaid detection sediment of the hole bottom and supporting course, described is pre-
The two ends plastic closure of built-in pipe is sealed after being fixed on steel reinforcement cage by pipe laying.
Beneficial effect：Compared with prior art, the present invention arranges embedding pipe fittingses in foundation pile, by this structure, the present invention
Detecting foundation pile sediment of the hole bottom and during supporting course rock proterties, concrete drill hole that need not again to foundation pile, but along built-in pipe
Directly pierce Under Pile end and coring is carried out to sediment and supporting course, thus, its detection is convenient, saves drilling time, makes
Detection time is shorter, and then makes detection cycle and construction period shorter, also saves boring testing cost simultaneously；Traditional drill core
Method detection must be carried out after foundation pile pours 28 days, present invention, avoiding the drilling to foundation pile concrete, so detection is poured in foundation pile
Can carry out after building 7 days, substantially reduce detection cycle.Moreover, because the present invention passes through to arrange built-in pipe, in detection
Foundation pile will not be damaged, and then test sample can be increased so that test effect is more accurate.The built-in pipe of the present invention is also
Can use as sound detecting pipe, the concrete integrality of foundation pile pile body can low with testing cost, speed is fast, (foundation pile pours 7 to cycle is short
Can carry out after it) low strain dynamic method or supercritical ultrasonics technology to detecting, further reduce testing cost, save the construction period,
Thus the economy of the present invention more preferably, simpler, applicability higher.
The present invention is analyzed as follows with the technology and economy comparison of existing drill core test：
With the long 20m of Under Pile, as a example the foundation pile of stake footpath 1.5m, and adopt《Guizhou Province's project delivery method detection expenses standard》With
《Architecture foundation pile inspection specifications JGJ 106 2014》Carry out technology and economy comparison analysis, rate of penetration every machine-team 10m is (no
Consideration equipment turnover scene）.
Drill core test：Detection time need to be carried out after 28 days in pile, holes 2, and wherein 1 hole enters supporting course 5m,
Quantities is 2 × 20+5=45m.Then testing cost is 45 meters × 500 yuan/meter (boring unit price)=22500 yuan, and the duration is 45 meters
÷ 10m/ machine-team=4.5 machine-team.
The inventive method detects：Detection time is carried out after foundation pile pours 7 days, holes 1, borehole engineering amount (is held for 5m
Power layer is holed).Using the detection of low strain dynamic method, detection quantities is 1；Or using supercritical ultrasonics technology detection, detection quantities is 3
Section.
(1) low strain dynamic method and the inventive method detection are adopted：Testing cost is that (low strain dynamic method detects 1 × 200 yuan/root
Unit price)+5 meters × 500 yuan/meter (boring unit price)=2700 yuan, the duration is that (low strain dynamic method detects 5 meters of ÷ 10m/ machine-team=0.5 machine-teams
About 15 minutes time, do not calculate）.
(2) supercritical ultrasonics technology and the inventive method detection are adopted：Testing cost is that (supercritical ultrasonics technology detects 3 × 500 yuan/bar
Unit price)+5 meters × 500 yuan/meter (boring unit price)=4000 yuan, the duration is that (supercritical ultrasonics technology detects 5 meters of ÷ 10m/ machine-team=0.5 machine-teams
About 15 minutes time, do not calculate）.
Known by above analysis, using the inventive method, expense can be saved as follows：
(1) low strain dynamic method detection pile body integrity and the inventive method detection are adopted；
22500-2700=19800 unit, that is, saved about 88% expense.
(2) supercritical ultrasonics technology detection pile body integrity and the inventive method detection are adopted；
22500-4000=18500 unit, that is, saved about 82% expense.
Can save the duration：4.5-0.5=4 machine-team, that is, saved for about 91% duration.
Therefore the present invention can shorten detection cycle, reduces testing cost, saves the construction period.
Brief description
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the operating diagram of the present invention.
Being labeled as in accompanying drawing：1- foundation pile, 2- built-in pipe, 3- steel reinforcement cage, 4- drill bit, 5- sediment of the hole bottom, 6- supporting course.
Specific embodiment：
The present invention is further illustrated with reference to the accompanying drawings and examples, but is not intended as the foundation that the present invention is limited.
Embodiment 1.A kind of detection sediment of the hole bottom and the pre-buried structure of supporting course, constitute as shown in Figure 1-2, including foundation pile 1,
It is provided with built-in pipe 2 in foundation pile 1；Described built-in pipe 2 is along the length direction insertion of foundation pile 1.
Aforesaid built-in pipe 2 is fixed on the steel reinforcement cage 3 in described foundation pile 1.
The two ends of aforesaid built-in pipe 2 are equipped with plastic closure.
The pre-buried structure of aforesaid detection sediment of the hole bottom and supporting course and detection method, detect in the steps below：
A, built-in pipe 2 is fixed on steel reinforcement cage 3；
B, above-mentioned steel reinforcement cage 3 is put in base pile hole, cast concrete forms foundation pile 1 afterwards；
C, drill bit 4 is passed through built-in pipe 2 directly carry out boring and coring to the supporting course 6 at sediment of the hole bottom 5 and stake bottom；
D, the core sample to boring and coring are edited and recorded, and judge sediment of the hole bottom 5 thickness and supporting course 6 rock proterties.
In aforesaid step a, described built-in pipe 2 be fixed on steel reinforcement cage 3 after by the two ends plastic closure of built-in pipe 2
Sealing.
Claims (5)
1. the pre-buried structure of a kind of detection sediment of the hole bottom and supporting course is it is characterised in that include foundation pile（1）, foundation pile（1）Interior setting
There is built-in pipe（2）；Described built-in pipe（2）Along foundation pile（1）Length direction insertion.
2. the pre-buried structure of detection sediment of the hole bottom according to claim 1 and supporting course is it is characterised in that described is pre-buried
Pipe（2）It is fixed on described foundation pile（1）Interior steel reinforcement cage（3）On.
3. the pre-buried structure of detection sediment of the hole bottom according to claim 1 and 2 and supporting course is it is characterised in that described
Built-in pipe（2）Two ends be equipped with plastic closure.
4. the detection method of the pre-buried structure of the detection sediment of the hole bottom as described in a kind of any one as claim 1-3 and supporting course,
It is characterized in that, detect in the steps below：
A, by built-in pipe（2）It is fixed on steel reinforcement cage（3）On；
B, by above-mentioned steel reinforcement cage（3）Put in base pile hole, cast concrete forms foundation pile afterwards（1）；
C, by drill bit（4）Through built-in pipe（2）Directly to sediment of the hole bottom（5）Supporting course with stake bottom（6）Carry out boring and coring；
D, the core sample to boring and coring are edited and recorded, and judge sediment of the hole bottom（5）Thickness and supporting course（6）Rock proterties.
5. according to claim 4 detection sediment of the hole bottom and supporting course pre-buried structure detection method it is characterised in that
In described step a, described built-in pipe（2）It is fixed on steel reinforcement cage（3）By built-in pipe after upper（2）Two ends plastic closure seal
Mouthful.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610964777.9A CN106400854A (en) | 2016-10-28 | 2016-10-28 | Embedded structure for detecting pile tip sediment and bearing stratum and detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610964777.9A CN106400854A (en) | 2016-10-28 | 2016-10-28 | Embedded structure for detecting pile tip sediment and bearing stratum and detection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106400854A true CN106400854A (en) | 2017-02-15 |
Family
ID=58014941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610964777.9A Withdrawn CN106400854A (en) | 2016-10-28 | 2016-10-28 | Embedded structure for detecting pile tip sediment and bearing stratum and detection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106400854A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110106869A (en) * | 2019-04-23 | 2019-08-09 | 中铁四局集团第四工程有限公司 | A kind of construction method of neighbouring Business Line crushed stone grouting pile |
-
2016
- 2016-10-28 CN CN201610964777.9A patent/CN106400854A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110106869A (en) * | 2019-04-23 | 2019-08-09 | 中铁四局集团第四工程有限公司 | A kind of construction method of neighbouring Business Line crushed stone grouting pile |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20170215 |
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| WW01 | Invention patent application withdrawn after publication |