CN1831512A - Deep horizontal load testing instrument - Google Patents
Deep horizontal load testing instrument Download PDFInfo
- Publication number
- CN1831512A CN1831512A CN 200610025495 CN200610025495A CN1831512A CN 1831512 A CN1831512 A CN 1831512A CN 200610025495 CN200610025495 CN 200610025495 CN 200610025495 A CN200610025495 A CN 200610025495A CN 1831512 A CN1831512 A CN 1831512A
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- Prior art keywords
- deep horizontal
- piston
- horizontal load
- testing instrument
- load testing
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
A tester of deep - layer horizontal load is featured as applying hydraulic driving to pressurize stage by stage for making load plate move horizontally, collecting deformation value at pressure of each stage in real time by data collection system, measuring horizontal deformation value of soil layer at different pressure for truly reflecting stress character of soil layer at site condition when soil layer is basically under original stress state.
Description
Technical field
The present invention relates to the surveying instrument class, relate to a kind of deep horizontal load testing instrument concretely.
Background technology
Horizontal load test method of the prior art can only be applicable to the superficial part soil layer, and only be suitable on the underground water table, and for burying deeply on the basis, underground water table is buried again when more shallow, generally can adopt preboring formula or self-drilling type side pressure test method, shortcoming is truly reflect structure composition deformation characteristics of other compressive strain method for measurement and principle.Also can adopt the flat chisel test method, its shortcoming is that the soil layer disturbance is out of shape greater than measuring deformation, the difficult true reflection soil properties of data, and confidence level is poor.Be exactly to adopt drill hole sampling in addition, the method that shop experiment records, the data confidence level relies on soil property amount, operant level, pressure to be provided with etc., the operation link that relates to is many, and the final data distortion is bigger, and value is not high, main be drill hole sampling after, soil sample stress discharges, and the virgin stress environment changes, and measured test figure and actual deviation are bigger.
Summary of the invention
The objective of the invention is according to above-mentioned the deficiencies in the prior art part, a kind of deep horizontal load testing instrument is provided, this test instrument adopts hydraulic-driven classification pressurization, the load plate level is to moving, data acquisition system (DAS) is gathered the deformation values under each stage pressure in real time, measure the horizontal modification value of soil layer under the different pressures state, be in substantially under the virgin state of stress, truly reflect the stress characteristics under the soil layer field condition at soil layer.
The object of the invention realizes being finished by following technical scheme:
A kind of horizontal load test instrument, it is characterized in that this test instrument comprises load plate, adds load device, part of detecting, closure casing, be provided with packoff between this housing and the load plate, add load device and part of detecting and be positioned at the closure casing inner chamber, add the load device and fixedly connected with load plate.
What add the employing of load device is the composite oil cylinder that is constituted by two oil cylinders, and wherein each oil cylinder comprises piston, the axis of the piston, fixedlys connected with load plate in the end of the axis of the piston.
The axis of the piston comprises first stage piston axle, second piston axle, and wherein fixedly connected with load plate in the end of second piston axle.The first stage piston axle of two oil cylinders is positioned at a central housing.
The bottom of closure casing is set with cuts native device.
Cut native device and comprise and cut native frame case, cut native blade, be pressed into cutting bucket, wherein cut native frame case and fixedly connected, be pressed into cutting bucket and cutting tip and be fixedly connected on and cut on the native frame case with closure casing.
Part of detecting includes position transducer, also includes pressure transducer.
Advantage of the present invention is, can truly reflect the stress characteristics under the soil layer field condition, soil layer is in virgin state of stress substantially, soft or hard degree according to soil layer has designed composite oil cylinder, it is wider to use the soil layer scope, employing is pressed into cuts native device, and load plate can directly be close to the testing site soil layer, drops to minimum to the disturbance of test beds.
Description of drawings
Accompanying drawing 1 is structural representation of the present invention;
Accompanying drawing 2 is part section structural representation of the present invention;
Accompanying drawing 3 is pressure chamber of the present invention cross-sectional view;
Accompanying drawing 4 is pressure chamber of the present invention working state structure synoptic diagram;
Accompanying drawing 5 is hydraulic schematic diagram of the present invention;
Embodiment
Feature of the present invention and other correlated characteristic are described in further detail by embodiment below in conjunction with accompanying drawing, so that technician's of the same trade understanding:
Shown in Fig. 1-5, label 1-33 represents respectively: cut native frame case 1, cut native blade 2, cylinder stent 3, retainer plate 4, cylinder cap 5, load plate (loading ring flange) 6, second piston axle 7, O-ring seal 8, cylinder body 9, O-ring seal 10, piston 11, first stage piston axle 12, central housing 13, closure 14, displacement transducer lay down location 15, be pressed into cutting bucket 16, fuel tank 17, oil filter 18, oil pump 19, motor 20, safe pressure valve 21, pressure regulator valve 22, tensimeter 23, accumulator 24, two-position four-way valve 25, two-position four-way valve 26, hydraulic control one-way valve 27, accumulator 28, tensimeter 29, accumulator 30, tensimeter 31, hydraulic control one-way valve 32, composite oil cylinder 33.
Embodiment:
Present embodiment comprises load plate 6, adds the load device, part of detecting, closure casing 14, be provided with O-ring seal 10 between this housing 14 and the load plate 6, add the inner chamber that load device and part of detecting are positioned at closure casing 14, add the load device and adopt bolt to be connected with load plate 6.What add the employing of load device is the composite oil cylinder 32 that is constituted by two oil cylinders, and wherein each oil cylinder comprises piston 11, first stage piston axle 12, second piston axle 7, and the end of second piston axle 7 adopts bolt to be connected with load plate 6.The first stage piston axle 12 of two oil cylinders is positioned at central housing 13.
The bottom of closure casing 14 is set with cuts native device.This is cut native device and comprises and cut native frame case 1, cut native blade 2, be pressed into cutting bucket 16, wherein cuts native frame case 1 and adopts supports by bolt with closure casing 14, is pressed into cutting bucket 16 screw threads and is fixed on and cuts on the native frame case.
Displacement transducer in the part of detecting is fixed in cylinder body, shift end and the axis of the piston synchronization action, and the pressure transducer in the part of detecting is positioned at the hydraulic circuit input end.
Present embodiment in use, in the testing site that pore-forming is finished, be pressed into the present embodiment product, when being pressed into, cut native device and finish soil body cutting, to design experiment point position, earlier with pressure transducer, the displacement transducer computing machine makes zero, according to testing site soil layer property design maximum pressure and pressure classification, composite oil cylinder 32 loads first order pressure according to testing requirements classification pressurization, and load plate 6 levels are to extrusion under the hydraulic jack effect, gather corresponding displacement simultaneously, measure the horizontal modification value of soil layer under the different pressures state, reach and load the next stage design load behind the stability requirement automatically, after this point satisfies testing requirements, load plate 6 is regained, and the present embodiment product promotes and portals.
Claims (10)
1, a kind of deep horizontal load testing instrument, it is characterized in that this test instrument comprises load plate, adds load device, part of detecting, closure casing, be provided with packoff between this housing and the load plate, add load device and part of detecting and be positioned at the closure casing inner chamber, add the load device and fixedly connected with load plate.
2, a kind of deep horizontal load testing instrument according to claim 1, it is characterized in that described what add that the load device adopts is the composite oil cylinder that is constituted by two oil cylinders, wherein each oil cylinder comprises piston, the axis of the piston, fixedlys connected with load plate in the end of the axis of the piston.
3, a kind of deep horizontal load testing instrument according to claim 2 is characterized in that described the axis of the piston comprises first stage piston axle, second piston axle, and wherein fixedly connected with load plate in the end of second piston axle.
4,, it is characterized in that the bolt that passes through of described fixedly connected finger is fixed on second piston axle top with load plate according to claim 2 or 3 described a kind of deep horizontal load testing instruments.
5, according to claim 2 or 3 described a kind of deep horizontal load testing instruments, it is characterized in that the first stage piston axle of described two oil cylinders is positioned at a central housing.
6, a kind of deep horizontal load testing instrument according to claim 1 is characterized in that described packoff is an O-ring seal.
7, a kind of deep horizontal load testing instrument according to claim 1, the bottom that it is characterized in that described closure casing is set with cuts native device.
8, a kind of deep horizontal load testing instrument according to claim 7, it is characterized in that describedly cutting native device and comprising and cut native frame case, cut native blade, be pressed into cutting bucket, wherein cut native frame case and fixedly connected, be pressed into cutting bucket and be fixedly connected on cutting tip and cut on the native frame case with closure casing.
9, a kind of deep horizontal load testing instrument according to claim 1 is characterized in that described part of detecting includes position transducer, and this sensor is fixed in cylinder body, shift end and the axis of the piston synchronization action.
10, a kind of deep horizontal load testing instrument according to claim 1 is characterized in that described part of detecting includes pressure transducer, and this sensor is positioned at the hydraulic circuit input end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100254959A CN100565174C (en) | 2006-04-06 | 2006-04-06 | Deep horizontal load testing instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100254959A CN100565174C (en) | 2006-04-06 | 2006-04-06 | Deep horizontal load testing instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1831512A true CN1831512A (en) | 2006-09-13 |
| CN100565174C CN100565174C (en) | 2009-12-02 |
Family
ID=36993929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100254959A Expired - Fee Related CN100565174C (en) | 2006-04-06 | 2006-04-06 | Deep horizontal load testing instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100565174C (en) |
-
2006
- 2006-04-06 CN CNB2006100254959A patent/CN100565174C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN100565174C (en) | 2009-12-02 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091202 Termination date: 20170406 |
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| CF01 | Termination of patent right due to non-payment of annual fee |