CN206143825U - Detect precasting structure of stake end sediment and supporting course - Google Patents
Detect precasting structure of stake end sediment and supporting course Download PDFInfo
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- CN206143825U CN206143825U CN201621188967.8U CN201621188967U CN206143825U CN 206143825 U CN206143825 U CN 206143825U CN 201621188967 U CN201621188967 U CN 201621188967U CN 206143825 U CN206143825 U CN 206143825U
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- foundation pile
- detection
- supporting course
- pipe
- utility
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model discloses a detect precasting structure of stake end sediment and supporting course. Including foundation pile (1), be provided with pre -buried pipe (2) in foundation pile (1), pre -buried pipe (2) along the foundation pile (1) length direction link up. The utility model has the characteristics of detect with low costs, the detection cycle is short, construction period is short and detection accuracy is high.
Description
Technical field
This utility model is related to engineering quality inspection of the piles checking and accepting technology field.It is particularly a kind of to detect sediment of the hole bottom and hold
The pre-buried structure of power layer.
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 character.The main method being analyzed using rig core boring sampling of detection, the party
Method drills 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.The method testing result is although intuitive, clear, but core drilling method high cost, long in time limit, detection cycle
It is long, and the method has certain destruction to stake, so the foundation pile that less ratio is only extracted during detection carries out drilling core checking, because
This detection sample is little, and then affects the accuracy of testing result.
The content of the invention
The purpose of this utility model is, there is provided the pre-buried structure of a kind of detection sediment of the hole bottom and supporting course.This practicality is new
Type has that testing cost is low, detection cycle is short, the construction period is short and the characteristics of high accuracy in detection.
The technical solution of the utility model：The pre-buried structure of a kind of detection sediment of the hole bottom and supporting course, including foundation pile, foundation pile
Built-in pipe is provided with inside；Length direction insertion of the described built-in pipe along 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.
Beneficial effect：Compared with prior art, this utility model arranges embedding pipe fittingses in foundation pile, by the structure, this
Utility model detecting foundation pile sediment of the hole bottom and during supporting course rock character, without the need for concrete drill hole again to foundation pile, but edge
Built-in pipe and directly piercing Under Pile end carries out coring to sediment and supporting course, and thus, its detection is convenient, saves drilling
Time, make detection time shorter, and then make detection cycle and construction period shorter, while also saving drilling testing cost；Pass
The drill core test of system must be carried out after foundation pile pours 28 days, and this utility model avoids the drilling to foundation pile concrete, so
Detection is carried out by foundation pile was poured after 7 days, substantially reduces detection cycle.Moreover, as this utility model is by setting
Built-in pipe is put, foundation pile will not be damaged in detection, and then test sample can be increased so that test effect is more accurate
Really.Built-in pipe of the present utility model can also be used as sound detecting pipe, the concrete integrity of foundation pile pile body can it is low with testing cost,
Speed is fast, the low strain dynamic method of cycle is short (foundation pile pour 7 days after by carry out) or supercritical ultrasonics technology to detecting, further reduce
Testing cost, saves the construction period, thus economy of the present utility model more preferably, the simpler, suitability it is higher.
This utility model 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 by the foundation pile of stake footpath 1.5m, and adopt《Guizhou Province's project delivery method detection charge mark
It is accurate》With《Architecture foundation pile inspection specifications JGJ 106-2014》Technology and economy comparison analysis is carried out, rate of penetration is per machine-team
10m (does not consider equipment turnover scene）.
Drill core test：Detection time need to be carried out after 28 days in pile, drilled 2, wherein 1 hole enters supporting course 5m,
Quantities is 2 × 20+5=45m.Then testing cost is 45 meters × 500 yuan/meter (drilling unit price)=22500 yuan, and the duration is 45 meters
÷ 10m/ machine-team=4.5 machine-team.
This utility model method is detected：Detection time is carried out after foundation pile pours 7 days, is drilled 1, and borehole engineering amount is 5m
(supporting course drilling).Detected using low strain dynamic method, detection quantities is 1；Or detected using supercritical ultrasonics technology, detection quantities is
3 sections.
(1) detected using low strain dynamic method and this utility model method：Testing cost is 1 × 200 yuan/root (low strain dynamic method
Detection unit price)+5 meters × 500 yuan/meter (drilling unit price)=2700 yuan, the duration is 5 meters of ÷ 10m/ machine-team=0.5 machine-team (low strain dynamic methods
Detection time about 15 minutes, does not calculate）.
(2) detected using supercritical ultrasonics technology and this utility model method：Testing cost is 3 × 500 yuan/bar (supercritical ultrasonics technology
Detection unit price)+5 meters × 500 yuan/meter (drilling unit price)=4000 yuan, the duration is 5 meters of ÷ 10m/ machine-team=0.5 machine-team (supercritical ultrasonics technologies
Detection time about 15 minutes, does not calculate）.
Analyze by more than and know, using this utility model method, expense can be saved as follows：
(1) pile body integrity and the detection of this utility model method are detected using low strain dynamic method；
22500-2700=19800 is first, that is, saved about 88% expense.
(2) pile body integrity and the detection of this utility model method are detected using supercritical ultrasonics technology；
22500-4000=18500 is first, that is, saved about 82% expense.
Can save the duration：4.5-0.5=4 machine-teams, that is, saved for about 91% duration.
Therefore this utility model can shorten detection cycle, reduce testing cost, saves the construction period.
Description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is operating diagram of the present utility model.
Labelling in accompanying drawing for：1- foundation piles, 2- built-in pipes, 3- steel reinforcement cages, 4- drill bits, 5- sediment of the hole bottom, 6- supporting courses.
Specific embodiment：
With reference to the accompanying drawings and examples this utility model is further described, but is not intended as to this utility model
The foundation of restriction.
Embodiment 1.The pre-buried structure of a kind of detection sediment of the hole bottom and supporting course, is constituted as shown in Figure 1-2, including foundation pile 1,
Built-in pipe 2 is provided with foundation pile 1；Length direction insertion of the described built-in pipe 2 along 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, is detected 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, pours into a mould concrete afterwards and form foundation pile 1；
C, drill bit 4 is directly carried out into boring and coring to the supporting course 6 at sediment of the hole bottom 5 and stake bottom through built-in pipe 2；
D, the core sample to boring and coring are edited and recorded, and judge 6 rock character of 5 thickness of sediment of the hole bottom and supporting course.
In aforementioned 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 (3)
1. it is a kind of detection sediment of the hole bottom and supporting course pre-buried structure, it is characterised in that including 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. it is according to claim 1 detection sediment of the hole bottom and supporting course pre-buried structure, 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. it is according to claim 1 and 2 detection sediment of the hole bottom and supporting course pre-buried structure, it is characterised in that it is described
Built-in pipe（2）Two ends be equipped with plastic closure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621188967.8U CN206143825U (en) | 2016-10-28 | 2016-10-28 | Detect precasting structure of stake end sediment and supporting course |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621188967.8U CN206143825U (en) | 2016-10-28 | 2016-10-28 | Detect precasting structure of stake end sediment and supporting course |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206143825U true CN206143825U (en) | 2017-05-03 |
Family
ID=58624854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621188967.8U Active CN206143825U (en) | 2016-10-28 | 2016-10-28 | Detect precasting structure of stake end sediment and supporting course |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206143825U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110984137A (en) * | 2019-11-21 | 2020-04-10 | 四川宝鑫建设有限公司 | Bridge cast-in-situ bored pile construction method |
-
2016
- 2016-10-28 CN CN201621188967.8U patent/CN206143825U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110984137A (en) * | 2019-11-21 | 2020-04-10 | 四川宝鑫建设有限公司 | Bridge cast-in-situ bored pile construction method |
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