CN204139210U - The P-Y curve measurement mechanism of pile-soil interaction pseudo-static experimental - Google Patents
The P-Y curve measurement mechanism of pile-soil interaction pseudo-static experimental Download PDFInfo
- Publication number
- CN204139210U CN204139210U CN201420559376.1U CN201420559376U CN204139210U CN 204139210 U CN204139210 U CN 204139210U CN 201420559376 U CN201420559376 U CN 201420559376U CN 204139210 U CN204139210 U CN 204139210U
- Authority
- CN
- China
- Prior art keywords
- pvc pipe
- pile
- pile body
- plain bar
- carrying
- Prior art date
- 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.)
- Withdrawn - After Issue
Links
Landscapes
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model relates to a kind of P-Y curve measurement mechanism of pile-soil interaction pseudo-static experimental, comprise the carrying pile body in the test soil body be embedded in model casing, the each testing section place of described carrying pile body is connected with the plain bar perpendicular to its axis, described plain bar one end is fixedly connected with carrying pile body, the sheet glass of surfacing is vertically connected with after other end penetration model case sidewall, described sheet glass is vertically connected with the displacement meter in order to measure the displacement of carrying pile body, the utility model has following beneficial effect: be placed on pvc pipe in plain bar and be connected with the displacement meter in same level, farthest can get rid of the interference of the soil body to measurement result, by butter sliding agent lubrication between pvc pipe, eliminate the impact on pile body displacement, plain bar is connected with the sheet glass of displacement meter by surfacing, be convenient to measure.
Description
Technical field
The utility model relates to a kind of P-Y curve measurement mechanism of pile-soil interaction pseudo-static experimental, belongs to bridge field.
Background technology
In treatment of soft foundation process, top shallow layer foundation cannot meet the loading demands of building or structure, usually uses pile foundation.In Integral Abutment Bridge, in order to meet pontic dilatation, also usually use flexible pile foundation.Therefore the research of pile-soil interaction is more and more subject to people's attention.Pile-soil interaction problem is material nonlinearity (concrete and the soil body are nonlinear materials) and the problem of contact nonlinear (pile-soil interface has multiple difference to contact form).And the study limitation of previous scholars is in theory analysis and numerical simulation, lack the checking of test.On-the-spot prototype test and research is the most significant in pile-soil interaction problem.But due to factors such as human and material resources, financial resources and times, on-the-spot prototype test often can not realize.In order to further understand the working mechanism of pile-soil interaction, the model testing of carrying out pile-soil interaction seems very necessary, for the reasonability of theory analysis and numerical simulation and reliability provide reference frame.
The P-Y curve of pile-soil interaction refers under horizontal loads, and all relation curves between certain some horizontal reacting force and amount of deflection of this some stake of stake are a kind of elastic-plastic analysis methods considering pile-soil interaction nonlinear effect.This method reflects the deformation characteristics of pile-soil interaction preferably, thus becomes the important method of calculated level load-bearing stake.
In pile-soil interaction Quintic system model testing, conventional P-Y curved measurement know-why is that the stretching strain and compressive strain by measuring pile body testing section place obtains bending, then tries to achieve pile body amount of deflection and soil pressure against piles by moment of flexure.
But, in pile-soil interaction Quintic system model testing, the stake side displacement obtained by this technology and native counter-force cannot consider the impact of pile body bending rigidity moment of flexure, stake cross sectional shape, stake top restrained boundary condition, result is obtained by theoretical differentiate or integration, often be not inconsistent with actual result, great inconvenience is caused to practical implementation.
Pile-soil interaction pseudo, shaketalle test etc. are related in the test of measuring pile body displacement, there is the problem that P-Y curve and actual result are not inconsistent equally.Direct measurement pile body amount of deflection can effectively address this problem.
Utility model content
The purpose of this utility model is for above weak point, provides a kind of P-Y curve measurement mechanism of pile-soil interaction pseudo-static experimental.
The scheme that the utility model technical solution problem adopts is, a kind of P-Y curve measurement mechanism of pile-soil interaction pseudo-static experimental, comprise the carrying pile body in the test soil body be embedded in model casing, the each testing section place of described carrying pile body is connected with the plain bar perpendicular to its axis, described plain bar one end is fixedly connected with carrying pile body, vertically be connected with the sheet glass of surfacing after other end penetration model case sidewall, described sheet glass is vertically connected with the displacement meter in order to measure the displacement of carrying pile body.
Further, described plain bar overcoat has pvc pipe assembly.
Further, described pvc pipe assembly comprises the pvc pipe A being set in plain bar, and pile body is vertical is connected for described pvc pipe A one end and carrying, and the other end is connected with pvc pipe B one end, described pvc pipe B penetration model case.
Further, described pvc pipe A external diameter is slightly less than pvc pipe B internal diameter, and described pvc pipe A is set in pvc pipe B tube wall, and described pvc pipe A and pvc pipe B connecting portion are coated with the butter sliding agent in order to lubricate.
Further, described displacement meter, plain bar and carrying pile body testing section are positioned at same level.
Compared with prior art, the utility model has following beneficial effect: be placed on pvc pipe in plain bar and be connected with the displacement meter in same level, farthest can get rid of the interference of the soil body to measurement result, lubricate with butter sliding agent between pvc pipe simultaneously, eliminate the impact on pile body displacement, plain bar is connected with the sheet glass of displacement meter by surfacing, be convenient to measure, the stake side displacement that technology obtains thus can consider pile body bending rigidity moment of flexure, stake cross sectional shape, the impact of the factors such as stake top restrained boundary condition, avoid the difficulty of border value, more close to actual conditions.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model patent is further illustrated.
Fig. 1 is structural representation of the present utility model;
In figure: 1-tests the soil body; 2-carries pile body; 3-pvc pipe A; 4-butter sliding agent; 5-plain bar; 6-pvc pipe B; 7-sheet glass; 8-displacement meter.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is further illustrated.
As shown in Figure 1, a kind of P-Y curve measurement mechanism of pile-soil interaction pseudo-static experimental, comprise the carrying pile body 2 in the test soil body 1 be embedded in model casing, the each testing section place of described carrying pile body 2 is connected with the plain bar 5 perpendicular to its axis, described plain bar 5 one end is fixedly connected with carrying pile body 2, vertically be connected with the sheet glass 7 of surfacing after other end penetration model case sidewall, described sheet glass 7 is vertically connected with the displacement meter 8 in order to measure the displacement of carrying pile body 2.
In the present embodiment, certainty of measurement first with sander polishing, thus should be improved in described carrying pile body 2 cross section and plain bar 5 termination.
In the present embodiment, in order to prevent soil body motion artifacts displacement measurement, described plain bar 5 overcoat has pvc pipe assembly.
In the present embodiment, described pvc pipe assembly comprises the pvc pipe A3 being set in plain bar 5, and pile body 2 is vertical is connected for described pvc pipe A3 one end and carrying, and the other end is connected with pvc pipe B6 one end, described pvc pipe B6 penetration model case.
In the present embodiment, described pvc pipe A3 external diameter is slightly less than pvc pipe B6 internal diameter, and described pvc pipe A3 is set in pvc pipe B6 tube wall, and described pvc pipe A3 and pvc pipe B6 connecting portion are coated with the butter sliding agent 4 in order to lubricate.
In the present embodiment, in order to obtain test data accurately, described displacement meter 8, plain bar 5 and carrying pile body 2 testing section are positioned at same level.
Specific implementation process:
(1) according to test requirements document, the distance between Confirming model case and carrying pile body 2.The length of plain bar 5 and pvc pipe group is obtained according to the distance between model casing and carrying pile body 2, the length of plain bar 5 and pvc pipe group should be a bit larger tham the distance 5 ~ 10cm between model casing and carrying pile body 2, plain bar 5 should 2-3cm slightly longer than pvc pipe group, and diameter is about 10mm;
(2) according to test requirements document, determine the diameter of stake, according to the diameter of the diameter determination pvc pipe A3 of stake, be generally greater than a diameter 1/4, be less than a diameter 1/2, pvc pipe A3 diameter should 1 ~ 2cm less of pvc pipe B6 diameter, and length is about 20cm;
(3) with sander, carrying pile body 2 test point cross section and plain bar termination are polished flat;
(4) with glass cement, plain bar 5 is vertical affixed with carrying pile body 2.Two pipes are connected with pvc pipe A3 outer wall coating butter sliding agent 4 at pvc pipe B6 inwall, are finally coated at plain bar 5 and affixed with carrying pile body 2;
(5) until pvc pipe group and plain bar 5 and carrying pile body 2 affixed completely after, at plain bar 5 outer end adhering glass sheet 7.Displacement meter 8 is connected with plain bar 5 by sheet glass 7, should ensure with plain bar 5 in same level simultaneously;
(6) to the filling test soil body 1 in model casing;
(7) Test Data Collecting is carried out.
Above-listed preferred embodiment; the purpose of this utility model, technical scheme and advantage are further described; be understood that; the foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (5)
1. the P-Y curve measurement mechanism of a pile-soil interaction pseudo-static experimental, comprise the carrying pile body in the test soil body be embedded in model casing, it is characterized in that: each testing section place of described carrying pile body is connected with the plain bar perpendicular to its axis, described plain bar one end is fixedly connected with carrying pile body, vertically be connected with the sheet glass of surfacing after other end penetration model case sidewall, described sheet glass is vertically connected with the displacement meter in order to measure the displacement of carrying pile body.
2. the P-Y curve measurement mechanism of pile-soil interaction pseudo-static experimental according to claim 1, is characterized in that: described plain bar overcoat has pvc pipe assembly.
3. the P-Y curve measurement mechanism of pile-soil interaction pseudo-static experimental according to claim 2, it is characterized in that: described pvc pipe assembly comprises the pvc pipe A being set in plain bar, pile body is vertical is connected for described pvc pipe A one end and carrying, the other end is connected with pvc pipe B one end, described pvc pipe B penetration model case.
4. the P-Y curve measurement mechanism of pile-soil interaction pseudo-static experimental according to claim 3, it is characterized in that: described pvc pipe A external diameter is slightly less than pvc pipe B internal diameter, described pvc pipe A is set in pvc pipe B tube wall, and described pvc pipe A and pvc pipe B connecting portion are coated with the butter sliding agent in order to lubricate.
5. the P-Y curve measurement mechanism of pile-soil interaction pseudo-static experimental according to claim 1, is characterized in that: described displacement meter, plain bar and carrying pile body testing section are positioned at same level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420559376.1U CN204139210U (en) | 2014-09-26 | 2014-09-26 | The P-Y curve measurement mechanism of pile-soil interaction pseudo-static experimental |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420559376.1U CN204139210U (en) | 2014-09-26 | 2014-09-26 | The P-Y curve measurement mechanism of pile-soil interaction pseudo-static experimental |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204139210U true CN204139210U (en) | 2015-02-04 |
Family
ID=52415907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420559376.1U Withdrawn - After Issue CN204139210U (en) | 2014-09-26 | 2014-09-26 | The P-Y curve measurement mechanism of pile-soil interaction pseudo-static experimental |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204139210U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104213587A (en) * | 2014-09-26 | 2014-12-17 | 福州大学 | P-Y curve measuring device for pseudo-static test on pile-soil interaction |
| CN104850730A (en) * | 2015-03-07 | 2015-08-19 | 西安科技大学 | Numerical analysis method of single-pile horizontal bearing character of seasonally frozen soil region |
| CN105951898A (en) * | 2016-06-29 | 2016-09-21 | 中国地质大学（武汉） | Hoop type torsional excitation device and method for measuring pile parameters and solving corresponding virtual time-domain response curve through hoop type torsional excitation device |
-
2014
- 2014-09-26 CN CN201420559376.1U patent/CN204139210U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104213587A (en) * | 2014-09-26 | 2014-12-17 | 福州大学 | P-Y curve measuring device for pseudo-static test on pile-soil interaction |
| CN104213587B (en) * | 2014-09-26 | 2016-02-24 | 福州大学 | The P-Y curve measurement mechanism of pile-soil interaction pseudo-static experimental |
| CN104850730A (en) * | 2015-03-07 | 2015-08-19 | 西安科技大学 | Numerical analysis method of single-pile horizontal bearing character of seasonally frozen soil region |
| CN104850730B (en) * | 2015-03-07 | 2018-04-20 | 西安科技大学 | A kind of Frozen Area single pile horizontal bearing character numerical analysis method |
| CN105951898A (en) * | 2016-06-29 | 2016-09-21 | 中国地质大学（武汉） | Hoop type torsional excitation device and method for measuring pile parameters and solving corresponding virtual time-domain response curve through hoop type torsional excitation device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104213587B (en) | The P-Y curve measurement mechanism of pile-soil interaction pseudo-static experimental | |
| CN104294860B (en) | P-Y curve measurement mechanism in pile-soil interaction shaketalle test | |
| US9963852B2 (en) | Test method for friction resistance at inner and outer sidewalls of pipe pile | |
| Hodder et al. | 3D experiments investigating the interaction of a model SCR with the seabed | |
| Xu et al. | Three-dimensional stability analysis of slope in unsaturated soils considering strength nonlinearity under water drawdown | |
| Ha et al. | Buried high-density polyethylene pipelines subjected to normal and strike-slip faulting—a centrifuge investigation | |
| CN204139210U (en) | The P-Y curve measurement mechanism of pile-soil interaction pseudo-static experimental | |
| CN105155593A (en) | Deformation-visible pile foundation model test loading box | |
| CN204402469U (en) | Hydraulic fracturing geostress survey die system | |
| CN105040985B (en) | The detecting system and method for stretching force under a kind of vertical finish rolling deformed bar anchor | |
| Wang et al. | Interaction between catenary riser and soft seabed: large-scale indoor tests | |
| CN108716227B (en) | Analysis method for axial force and displacement distribution of full-length bonded GFRP anti-floating anchor rod | |
| Feng et al. | A computational method for post-construction settlement of high-speed railway bridge pile foundation considering soil creep effect | |
| Zheng et al. | Arch-dam crack deformation monitoring hybrid model based on XFEM | |
| CN202430702U (en) | Probe based on multifunctional piezocone penetration test | |
| CN103898930B (en) | Prestressed concrete pipe pile horizontal bearing attribute testing model and modeling method | |
| CN104964840A (en) | Secondary lining arch foot sedimentation experiment loading device and application method | |
| Guo et al. | Experimentally derived CPT-based py curves for soft clay | |
| CN207215011U (en) | It is a kind of to measure the sensor that interfacial adhesion slides between steel plate and concrete | |
| CN205607310U (en) | Crack monitoring devices | |
| CN204139211U (en) | P-Y curve measurement mechanism in pile-soil interaction shaketalle test | |
| CN105095585B (en) | Anchor pole anti-floating basement overall coordination method for designing | |
| CN207516369U (en) | Concrete slump detection device | |
| CN208520689U (en) | It is a kind of for Compressive Performance test band to draw reinforcing bar steel core concrete column | |
| CN204919632U (en) | Open caisson frictional resistance meter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150204 Effective date of abandoning: 20160224 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |