CN106677230B - A kind of compound base loading test device - Google Patents
A kind of compound base loading test device Download PDFInfo
- Publication number
- CN106677230B CN106677230B CN201611024062.1A CN201611024062A CN106677230B CN 106677230 B CN106677230 B CN 106677230B CN 201611024062 A CN201611024062 A CN 201611024062A CN 106677230 B CN106677230 B CN 106677230B
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- China
- Prior art keywords
- circular slab
- load
- compound base
- loading test
- test device
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
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- Engineering & Computer Science (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)
- Structural Engineering (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of compound base loading test devices, measuring mechanism, supporting mechanism and force application mechanism are set, to realize the detection to stake in composite foundation and the common bearing capacity of soil around pile, the invention detects that the region entirety bearing capacity in institute detection zone, realize the judge that total bearing capacity is carried out to the compound base after pile foundation reinforcement, rather than carry out pile foundation alone and individually evaluated with subgrade soils, it has important practical significance.
Description
Technical field
The present invention relates to relevant traffic quality testing department stake soil used by progress traffic route flabbily base segment
A kind of compound base loading test device that its bearing capacity is detected after composite foundation treatment process.
Background technique
Many Subgrade soils such as reservoir section, humus soil are on the verge of for some pass through in High-Grade Highway Subgrade design
Section, subgrade rating are not able to satisfy the requirement of Road Design service life, therefore need to be in the paragraph roadbed by between certain
Away from all multi-form reinforcements such as setting cast-in-situ bored pile, precast concrete pile, lime-soil compaction pile, vibro-replacement stone columns, stake is formed
Native composite foundation, to improve the total bearing capacity of the roadbed.However, presently relevant Vehicle Detection department is native compoundly to stake
There is no unified standard and devices when base is detected, thus different detection working unit personnel combine the experience of oneself to certainly
The different roadbed operating condition that oneself is encountered formulates detection scheme, so causing, detection scheme is many kinds of, and the detection quality good and the bad is not
Together, detection device is not quite similar, and detection cost difference is larger.
Summary of the invention
For above-mentioned problems of the prior art, the object of the present invention is to provide a kind of compound bases to hold
Force checking device is carried, solves to lack in the prior art and unified bearing capacity is carried out to the common supporting body that stake and soil are formed examines
It surveys.
To achieve the goals above, the present invention adopts the following technical scheme:
A kind of compound base loading test device, including the circle above the stake that is arranged in compound base
Plate further includes measuring mechanism, supporting mechanism and force application mechanism；Measuring mechanism includes multiple dial gauges, and multiple dial gauges are evenly arranged on
It the periphery of the circular slab and is contacted with the circular slab；Supporting mechanism includes that the longitudinal directions of the circular slab two sides is arranged in hold
Bracket is carried, there are two lateral bearing brackets for the top setting of longitudinal load-bearing bracket；Force application mechanism includes being arranged in lateral bearing branch
Multiple force-applying pieces above frame and the load bearing beam from top to bottom set gradually between lateral bearing bracket and the circular slab
And a carrying boom support is respectively set in jack, the both ends of the load bearing beam.
Specifically, the lateral bearing support vertical is in the longitudinal load-bearing bracket；The longitudinal load-bearing bracket is parallel to
The load bearing beam.
Further, the axis of the load bearing beam passes through the central point of the circular slab.
Further, the line of two carrying boom supports passes through the central point of the circular slab.
Further, the axis of the jack passes through the central point of the circular slab.
Further, mounting rod is distributed in the two sides of the circular slab, and the dial gauge is mounted on mounting rod.
Specifically, the force-applying piece is tied using reinforcing bar.
Further, height the sum of of the height of the longitudinal load-bearing bracket lower than load bearing beam and carrying boom support.
Compared with prior art, the present invention has following technical effect that present invention setting measuring mechanism, supporting mechanism and applies
Force mechanisms, to realize detection to stake in composite foundation and the common bearing capacity of soil around pile, the invention detects that institute's detection zone
Region entirety bearing capacity in domain realizes the judge that total bearing capacity is carried out to the compound base after pile foundation reinforcement, and
It is not to carry out pile foundation alone individually to evaluate with subgrade soils, has important practical significance.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is front view of the invention；
Each label meaning in figure: 1-circular slab, 2-dial gauges, 3-longitudinal load-bearing brackets, 4-lateral bearing brackets,
5-force-applying pieces, 6-load bearing beams, 7-jack, 8-carrying boom supports, 9-mounting rods.
Specific embodiment
For the soft foundation of Lack of support, need to be arranged in ground stake formation compound base, to improve
The total bearing capacity of this section of roadbed；The detection of foundation bearing capacity is detected primarily directed to single pile at present, is lacked to stake and soil
The common supporting body formed carries out unified loading test.Compound base loading test device of the invention, can
Realize that the common supporting body formed to stake and soil carries out unified loading test.
Referring to Fig. 1 and 2, it is compound in stake soil to specifically include setting to compound base loading test device of the invention
Circular slab 1 above stake in ground further includes measuring mechanism, supporting mechanism and force application mechanism；Measuring mechanism includes multiple hundred
Divide table 2, multiple dial gauges 2 are evenly arranged on the periphery of the circular slab 1 and contact with the circular slab 1；Supporting mechanism includes setting
The longitudinal load-bearing bracket 3 in 1 two sides of circular slab is set, there are two lateral bearing brackets for the top setting of longitudinal load-bearing bracket 3
4；Force application mechanism includes multiple force-applying pieces 5 of 4 top of lateral bearing bracket being arranged in and in lateral bearing bracket 4 and the circle
The load bearing beam 6 and jack 7 from top to bottom set gradually between shape plate 1.The both ends of the load bearing beam 6 are respectively set one and hold
Carrier beam bracket 8.Wherein, height the sum of of the height of longitudinal load-bearing bracket 3 lower than load bearing beam 6 and carrying boom support 8.
The present invention is after jack 7 is played, and under the action of force-applying piece 5, jack 7 applies pressure to circular slab 1, passes through
The dead load that upper part generates uniformly is sent on detection pile crown by circular slab 1；Under huge top static load, laterally hold
The both ends at the both ends and load bearing beam 6 that carry bracket 4 can generate bending, meanwhile, the soil body densification on pile crown top, pile foundation generates few
Perhaps settle, so as to cause two longitudinal load-bearing brackets 3 both ends applied force in lateral bearing bracket 4, dead load is sent to vertical
To bearing support 3, meanwhile, dead load is sent to load bearing beam branch in two carrying boom supports 8 by the both ends applied force of load bearing beam 6
Frame 8, so as to cause two longitudinal load-bearing brackets 3 and two carrying boom supports 8 undertake fractional load, two longitudinal load-bearings of surrounding
Bracket 3 and two carrying boom supports 8 can undertake 10%~20%, and pile foundation undertakes 80%~90%.To realize to compoundly
Stake and the detection of the common bearing capacity of soil around pile in base, the invention detects that the region entirety bearing capacity in institute's detection zone, real
Show the judge for carrying out total bearing capacity to the compound base after pile foundation reinforcement, rather than carries out pile foundation and subgrade soils alone
Individually evaluation, has important practical significance.
Circular slab 1 of the invention uses circular steel plate, and the diameter of circular steel plate is slightly larger than stake diameter, and the thickness of circular steel plate is answered
This can guarantee to be unlikely to generate flexure, the center weight at the center of circular steel plate and detected pile crown in the case where upper load acts on
It closes.On the one hand the effect of the circular steel plate is that the dead load that top generates uniformly is sent on detection pile crown, on the other hand will
Sedimentation caused by upper load effect is lower is counted by multiple dial gauges 2.
On the one hand the effect of carrying boom support 8 of the invention is that the load bearing beam 6 provides support, on the other hand by part lotus
Load is sent to compound base.
The effect of jack 7 of the invention is to jack up load bearing beam 6, so that upper load mainly loads on pile to be checked
On.
The effect of the longitudinal load-bearing bracket 3 of two sides is the lateral bearing bracket 4 supported above it, and fractional load is transmitted
To compound base.
In order to guarantee the accuracy of the device of the invention measurement result, the lateral bearing bracket 4 is perpendicular to the longitudinal direction
Bearing support 3；The longitudinal load-bearing bracket 3 is parallel to the load bearing beam 6.The axis of the load bearing beam 6 passes through the circular slab 1
Central point.The line of two carrying boom supports 8 passes through the central point of the circular slab 1.The axis of the jack 7 passes through institute
State the central point of circular slab 1.
Mounting rod 9 is distributed in the two sides of the circular slab 1, and the dial gauge 2 is mounted on mounting rod 9.Mounting rod 9 is iron
Bar is adsorbed in 9 inside of mounting rod using the Magnetic gauge stand of dial gauge 2, and there are four the settings of dial gauge 2, and four dial gauges 2 are equal
It is even to be set to 1 surrounding of circular slab.
The force-applying piece 5 is using any components for capableing of applied force such as reinforcing bar bundles.
The present invention carries out precompressed of the manual pressure to certain value realization to compound base to jack 7, in a timing
Between read the numerical value of 4 dial gauges 2 after section and be used as initial reading, and then carry out hierarchical loading and round the clock uninterruptedly every one periodically
Between section dial gauge 2 is read.Institute's measured data is arranged and analyzed, and then judges that the bearing capacity of compound base is
It is no to meet design requirement.
Claims (6)
1. a kind of compound base loading test device, including the circular slab above the stake that is arranged in compound base
(1), which is characterized in that further include measuring mechanism, supporting mechanism and force application mechanism；Measuring mechanism includes multiple dial gauges (2), more
A dial gauge (2) is evenly arranged on the periphery of the circular slab (1) and contacts with the circular slab (1)；Supporting mechanism includes setting
Longitudinal load-bearing bracket (3) in the circular slab (1) two sides, there are two lateral bearings for the top setting of longitudinal load-bearing bracket (3)
Bracket (4)；Force application mechanism includes multiple force-applying pieces (5) above lateral bearing bracket (4) being arranged and in lateral bearing branch
The load bearing beam (6) and jack (7) from top to bottom set gradually between frame (4) and the circular slab (1), the load bearing beam (6)
Both ends a carrying boom support (8) is respectively set, the lateral bearing bracket (4) is perpendicular to the longitudinal load-bearing bracket (3)；
The longitudinal load-bearing bracket (3) is parallel to the load bearing beam (6), and the line of two carrying boom supports (3) passes through the circular slab
(1) central point.
2. compound base loading test device as described in claim 1, which is characterized in that the load bearing beam (6)
Axis passes through the central point of the circular slab (1).
3. compound base loading test device as described in claim 1, which is characterized in that the jack (7)
Axis passes through the central point of the circular slab (1).
4. compound base loading test device as described in claim 1, which is characterized in that the circular slab (1)
Two sides are distributed with mounting rod (9), and the dial gauge (2) is mounted on mounting rod (9).
5. compound base loading test device as described in claim 1, which is characterized in that the force-applying piece (5) is adopted
It is tied with reinforcing bar.
6. compound base loading test device as described in claim 1, which is characterized in that the longitudinal load-bearing bracket
(3) height the sum of of the height lower than load bearing beam (6) and carrying boom support (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611024062.1A CN106677230B (en) | 2016-11-17 | 2016-11-17 | A kind of compound base loading test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611024062.1A CN106677230B (en) | 2016-11-17 | 2016-11-17 | A kind of compound base loading test device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106677230A CN106677230A (en) | 2017-05-17 |
| CN106677230B true CN106677230B (en) | 2019-04-23 |
Family
ID=58866570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611024062.1A Expired - Fee Related CN106677230B (en) | 2016-11-17 | 2016-11-17 | A kind of compound base loading test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106677230B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110306519B (en) * | 2019-06-26 | 2020-10-30 | 陕西长地建设工程质量检测有限公司 | Foundation bearing capacity detection device and method |
| CN111501715B (en) * | 2020-04-17 | 2021-06-11 | 孙景辉 | Device for detecting bearing capacity of pile soil composite foundation |
| CN112695812A (en) * | 2020-12-09 | 2021-04-23 | 山西华晋岩土工程勘察有限公司 | Pile soil composite foundation bearing capacity detection device |
| CN113789821A (en) * | 2021-10-13 | 2021-12-14 | 江苏河海工程建设监理有限公司 | Pile foundation detection device for building engineering supervision and application method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2284673B (en) * | 1993-12-08 | 1997-01-08 | Precision Monitoring & Control | Pile-testing apparatus |
| TW580531B (en) * | 2002-10-08 | 2004-03-21 | Great Asia Engineering Consult | A load test method of foundation piles and device thereof formed by an assembled main beam and aid beam system |
| CN203701158U (en) * | 2014-01-20 | 2014-07-09 | 青岛润佳建设集团有限公司 | Pile foundation vertical bearing capacity detector |
| CN104328810A (en) * | 2014-11-07 | 2015-02-04 | 广州科技职业技术学院 | Improved method for detecting bearing capacity of precast pipe-pile single-pile foundation |
| CN105297793A (en) * | 2015-11-13 | 2016-02-03 | 镇江市丹徒区建筑工程质量检测中心 | Device for vertical pulling-resistance static loading test of single pile |
| CN205224129U (en) * | 2015-12-21 | 2016-05-11 | 武汉科技大学 | Single pile basis vertical bearing capacity's experiment detection device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10528073B2 (en) * | 2015-03-04 | 2020-01-07 | Snap-On Incorporated | Rotatable control device with axial translation |
| CN206174013U (en) * | 2016-11-17 | 2017-05-17 | 长安大学 | A mechanism for detecting pile -soil composite foundation bearing capacity |
-
2016
- 2016-11-17 CN CN201611024062.1A patent/CN106677230B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2284673B (en) * | 1993-12-08 | 1997-01-08 | Precision Monitoring & Control | Pile-testing apparatus |
| TW580531B (en) * | 2002-10-08 | 2004-03-21 | Great Asia Engineering Consult | A load test method of foundation piles and device thereof formed by an assembled main beam and aid beam system |
| CN203701158U (en) * | 2014-01-20 | 2014-07-09 | 青岛润佳建设集团有限公司 | Pile foundation vertical bearing capacity detector |
| CN104328810A (en) * | 2014-11-07 | 2015-02-04 | 广州科技职业技术学院 | Improved method for detecting bearing capacity of precast pipe-pile single-pile foundation |
| CN105297793A (en) * | 2015-11-13 | 2016-02-03 | 镇江市丹徒区建筑工程质量检测中心 | Device for vertical pulling-resistance static loading test of single pile |
| CN205224129U (en) * | 2015-12-21 | 2016-05-11 | 武汉科技大学 | Single pile basis vertical bearing capacity's experiment detection device |
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|---|---|
| CN106677230A (en) | 2017-05-17 |
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