CN102817344A - Comprehensive frictional resistance meter - Google Patents
Comprehensive frictional resistance meter Download PDFInfo
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- CN102817344A CN102817344A CN2012101382080A CN201210138208A CN102817344A CN 102817344 A CN102817344 A CN 102817344A CN 2012101382080 A CN2012101382080 A CN 2012101382080A CN 201210138208 A CN201210138208 A CN 201210138208A CN 102817344 A CN102817344 A CN 102817344A
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- frictional resistance
- backup plate
- resistance meter
- guide rail
- panel
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Abstract
The invention relates to a comprehensive frictional resistance meter which comprises a protective cover, a fixed panel, a stressed panel, a guide rail, a first backup plate, a second backup plate, a stress detector and a flexible soil pressure gauge, wherein the protective cover is provided with a receiving space; the fixed panel is formed at a second baffle of the protective box; the stressed panel faces the fixed panel; the guide rail is provided with a guide rail sliding locking groove and is arranged at one side of the stressed panel, which is close to the receiving space in parallel; the first backup plate is arranged between the fixed panel and the guide rail; the second backup plate is arranged in parallel to the first backup plate and located between the fixed panel and the guide rail; the stress detector is provided with a first lead and is arranged between the first and second backup plates; and the flexible soil pressure gauge is provided with a second lead and arranged at one side of the stressed panel different from the guide rail. The comprehensive frictional resistance meter is suitable for actual engineering monitoring, not only the monitoring work is less affected by construction, and the precision is higher, but also the survival rate of the comprehensive frictional resistance meter is considerably high, and the comprehensive frictional resistance meter has higher test precision and stronger adaptability.
Description
Technical field
The present invention relates to be applied to the testing arrangement technical field of construction work, relate in particular to the comprehensive frictional resistance meter of a kind of open caisson lateral earth pressure and frictional resistance.
Background technology
With the support of the structure of the pit shaft shape of processing with steel concrete on the ground in advance, under the protection of the borehole wall, cut the earth in well with artificial, and the works in its deadweight effect sinking is buried is called open caisson with machinery as underground structure.So well sinking, be exactly in fact to scratch the structure that make on the ground in advance with one to sink to the work progress that becomes underground structure behind the underground certain depth through shoveling.Well sinking is under the deadweight effect, overcomes that frictional resistance and the sword pin counter-force of the borehole wall and the soil body accomplish.So side friction and sword pin soil pressure are the key factors that influences open caisson construction, so the test of sidewall frictional resistance is all extremely important to various aspects such as the design of open caisson, constructions.
But in present stage, actual engineering basically all is the sidewall frictional resistance through indirect method test open caisson; Method commonly used has following two kinds: the first, in the cross section of the reinforcing cage differing heights of open caisson a power meter is set, through axle power meter with indirect monitoring sidewall frictional resistance; But the method not only precision is relatively poor, and test result is frictional resistance between two cross sections, is the average of frictional resistance; Can't reflect that open caisson tilts, the frictional resistance under the prominent situation such as heavy changes, and is little to the construction directive significance; Second; Bury earth pressure cell underground in the open caisson side,, multiply by friction factor again and draw side friction through the test lateral earth pressure; Its friction factor of the method itself just is difficult for confirming; Also can't confirm the frictional resistance direction, because friction factor is coefficient of friction of rest, so method of testing can't reflect also that open caisson tilts, the frictional resistance under the prominent situation such as heavy changes.Present stage, the lateral earth pressure test of sinking well engineering is all accomplished through earth pressure cell.The domestic instrument that does not also have to measure simultaneously sidewall soil pressure and side friction.
Chinese patent 200910263089.X has disclosed a kind of elastic beam type side wall frictional resistance dynamometer, comprises several critical pieces compositions such as build-in plate, panel, spring beam, strain meter and protection box.Can be used for measuring the frictional resistance of open caisson and surrounding soil in this invention.But, not enough below this invention exists: the first, this invention is not provided with seal approach, is prone to water inlet in the well sinking process, causes instrument to lose efficacy; The second, for rigidity contacts, get into draw-in groove between the protection box of stressed panel and side if any soil particle, then be prone to stuckly, cause stressed panel to be free to slide, influence certainty of measurement; The 3rd, it is more to calculate conversion times in this invention, influences its certainty of measurement; The 4th, this invention has no idea to test the lateral earth pressure of caisson wall.
So to the problem that prior art exists, this case designer relies on the industry experience for many years of being engaged in, the active research improvement is so there has been the comprehensive frictional resistance meter of the present invention.
Summary of the invention
The present invention be directed in the prior art, traditional side wall frictional resistance dynamometer lost efficacy easily, and certainty of measurement also defective such as susceptible to provides a kind of comprehensive frictional resistance meter.
In order to address the above problem, the present invention provides a kind of comprehensive frictional resistance meter, and said comprehensive frictional resistance meter comprises: the protection box, and said protection box has by first baffle plate, the second baffle that are linked in sequence, and the 3rd baffle plate encloses the receiving space of formation; Fixed panel has fixed panel slip draw-in groove, and is formed on the second baffle place of said protection box; Stressed panel, said stressed panel and said fixed panel are towards setting, and between said first baffle plate and said the 3rd baffle plate, and are arranged on said fixed panel one end of differing from of said first baffle plate and said the 3rd baffle plate through said block media; Guide rail has guide rail slip draw-in groove, and is towards being set in parallel in said receiving space one side of closing on of said stressed panel; First backup plate; Said first backup plate is arranged between said fixed panel and the said guide rail; Said first backup plate, one end is fixedly connected with said first stiffener; And said first stiffener is slidingly arranged in the said guide rail slip draw-in groove, the other end of said first backup plate is fixedly installed on the said fixed panel; Second backup plate; Said second backup plate and said first backup plate laterally arrange; And between said fixed panel and said guide rail; Said second backup plate, one end is fixedly connected with said second stiffener, and the end that said second backup plate has second stiffener is fixedly installed on the said guide rail, and the other end of said second backup plate is slidingly arranged in the fixed panel slip draw-in groove of said fixed panel; Stressometer, the some leads of said stressometer tool, and be arranged between said first backup plate and said second backup plate; And flexible earth pressure gauge, said flexible earth pressure gauge has second lead, and is arranged on a side that differs from said guide rail of said stressed panel.
Optional, said comprehensive frictional resistance meter adopts installation nut or welding manner and said open caisson to fix.
Optional, said comprehensive frictional resistance meter is fixedly installed on each limit of said protection box.
Optional, said guide rail is fixed through bolt and said stressed panel.
Optional, said protection box and said fixed panel are one-body molded.
Optional, the second baffle of said protection box is square, and the height of said protection box is less than its length and width size.
Optional, said stressed panel is steel or concrete material.
Optional, said first stiffener and said second stiffener are symmetrical set, and said first stiffener and said second stiffener are steel material.
Optional, said block media is a watertight rubber.
Optional, said first backup plate and the said second backup plate thickness originally do not produce the sag design according to said first backup plate and said second backup plate in test process.
Optional, said stress is counted the reinforcement stresses meter.
Optional, the direction of said stressometer is consistent with said guide rail direction.
Optional, the lifting surface area of said flexible earth pressure gauge equates with the lifting surface area of said stressed panel.
In sum, the comprehensive frictional resistance meter of the present invention is suitable for actual engineering monitoring, and not only monitoring receives construction infection less, and precision is higher, and said comprehensive frictional resistance meter survival rate is quite high, has higher measuring accuracy and stronger applicability.
Description of drawings
Shown in Figure 1 for the side-looking structural representation of the comprehensive frictional resistance meter of the present invention;
Shown in Figure 2 for the plan structure sketch map of the comprehensive frictional resistance meter of the present invention;
Shown in Figure 3 for the backsight structural representation of the comprehensive frictional resistance meter of the present invention.
The specific embodiment
By the technology contents, the structural feature that specify the invention, reached purpose and effect, will combine embodiment and conjunction with figs. to specify below.
See also Fig. 1, Fig. 2, shown in Figure 1ly be the side-looking structural representation of the comprehensive frictional resistance meter of the present invention.Shown in Figure 2 for the plan structure sketch map of the comprehensive frictional resistance meter of the present invention.Said comprehensive frictional resistance meter 1 comprises protection box 10, and said protection box 10 has by first baffle plate 101, the second baffle 102 that are linked in sequence, and the 3rd baffle plate 103 encloses the receiving space 104 of formation; Fixed panel 11 has fixed panel slip draw-in groove 110, and is formed on second baffle 102 places of said protection box 10; Stressed panel 12; Said stressed panel 12 is towards setting with said fixed panel 11; And between said first baffle plate 101 and said the 3rd baffle plate 103, and be arranged on said fixed panel 11 1 ends that differ from of said first baffle plate 101 and said the 3rd baffle plate 103 through said block media 13; Guide rail 14 has guide rail slip draw-in groove 141, and is towards being set in parallel in said receiving space 104 1 sides of closing on of said stressed panel 12; First backup plate 15; Said first backup plate 15 is arranged between said fixed panel 11 and the said guide rail 14; Said first backup plate, 15 1 ends are fixedly connected with said first stiffener 151; And said first stiffener 151 is slidingly arranged in the said guide rail slip draw-in groove 141, the other end of said first backup plate 15 is fixedly installed on the said fixed panel 11; Second backup plate 16; Said second backup plate 16 laterally arranges with said first backup plate 15; And between said fixed panel 11 and said guide rail 14; Said second backup plate, 16 1 ends are fixedly connected with said second stiffener 161, and the end that said second backup plate 16 has second stiffener 161 is fixedly installed on the said guide rail 14, and the other end of said second backup plate 16 is slidingly arranged in the fixed panel slip draw-in groove 110 of said fixed panel 11; Stressometer 17, some first leads 171 of said stressometer 17 tools, and be arranged between said first backup plate 15 and said second backup plate 16; And flexible earth pressure gauge 18, said flexible earth pressure gauge 18 has second lead 181, and is arranged on a side of the said guide rail 14 of differing from of said stressed panel 12.
For better implement the present invention, preferred, said comprehensive frictional resistance meter 1 adopts installation nut 19 or welding manner and said open caisson to fix.Said comprehensive frictional resistance meter 1 is fixedly installed on each limit of said protection box 10.
Wherein, said guide rail 14 is fixed through bolt 20 and said stressed panel 12.Said protection box 10 and said fixed panel 11 are one-body molded.Preferably, the second baffle 102 of said protection box 10 is square, and the height of said protection box 10 is less than its length and width size.Said stressed panel 12 is steel or concrete material.Said first stiffener 151 is symmetrical set with said second stiffener 161, and said first stiffener 151 is a steel material with said second stiffener 161.Said block media 13 is a watertight rubber.Said first backup plate 15 need be bigger with said second backup plate, 16 thickness, to increase its rigidity, reduces said first backup plate 15 and 16 sags that in test process, produce of said second backup plate, to improve measuring accuracy.Particularly, the thickness of said first backup plate 15 and said second backup plate 16 does not produce the sag design according to said first backup plate 15 and 16 of said second backup plates in test process.Said stressometer 17 is the reinforcement stresses meter.The direction of said stressometer 17 is consistent with said guide rail 14 directions.The lifting surface area of said flexible earth pressure gauge 18 equates with the lifting surface area of said stressed panel 12.
See also Fig. 1, Fig. 2, and combine to consult Fig. 3, the operating principle of the comprehensive frictional resistance meter 1 of the present invention is detailed.Shown in Figure 3 for the backsight structural representation of the comprehensive frictional resistance meter of the present invention.When measuring; The soil body (not shown) is to the lateral earth pressure and the frictional resistance of stressed panel 12; Make and take place between said stressed panel 12 and the said fixed panel 11 to slide relatively; The comprehensive frictional resistance meter 1 of the present invention is through guide rail 14, fixed panel slip draw-in groove 110, guide rail slip draw-in groove 141, first backup plate 15; And second device such as backup plate 16, make said stressometer 17 pressures be said stressed panel 12 suffered frictional resistances, and the variable in distance between said first backup plate 15 and said second backup plate 16 equal between said fixed panel 11 and the said stressed panel 12 slide displacement relatively; And said variable in distance causes the STRESS VARIATION of said stressometer 17, thereby through testing said stressometer 17 numerical value and then obtaining said stressed panel 12 suffered frictional resistances.Said flexible earth pressure gauge 18 is used for testing lateral earth pressure.
In sum, the comprehensive frictional resistance meter of the present invention is suitable for actual engineering monitoring, and not only monitoring receives construction infection less, and precision is higher, and said comprehensive frictional resistance meter survival rate is quite high, has higher measuring accuracy and stronger applicability.
Those skilled in the art all should be appreciated that, under the situation that does not break away from the spirit or scope of the present invention, can carry out various modifications and modification to the present invention.Thereby, if when any modification or modification fall in the protection domain of appended claims and equivalent, think that the present invention contains these modifications and modification.
Claims (13)
1. a comprehensive frictional resistance meter is characterized in that, said comprehensive frictional resistance meter comprises:
The protection box, said protection box has by first baffle plate, the second baffle that are linked in sequence, and the 3rd baffle plate encloses the receiving space of formation;
Fixed panel has fixed panel slip draw-in groove, and is formed on the second baffle place of said protection box;
Stressed panel, said stressed panel and said fixed panel are towards setting, and between said first baffle plate and said the 3rd baffle plate, and are arranged on said fixed panel one end of differing from of said first baffle plate and said the 3rd baffle plate through said block media;
Guide rail has guide rail slip draw-in groove, and is towards being set in parallel in said receiving space one side of closing on of said stressed panel;
First backup plate; Said first backup plate is arranged between said fixed panel and the said guide rail; Said first backup plate, one end is fixedly connected with said first stiffener; And said first stiffener is slidingly arranged in the said guide rail slip draw-in groove, the other end of said first backup plate is fixedly installed on the said fixed panel;
Second backup plate; Said second backup plate and said first backup plate laterally arrange; And between said fixed panel and said guide rail; Said second backup plate, one end is fixedly connected with said second stiffener, and the end that said second backup plate has second stiffener is fixedly installed on the said guide rail, and the other end of said second backup plate is slidingly arranged in the fixed panel slip draw-in groove of said fixed panel;
Stressometer, some first leads of said stressometer tool, and be arranged between said first backup plate and said second backup plate; And,
Flexible earth pressure gauge, said flexible earth pressure gauge has second lead, and is arranged on a side that differs from said guide rail of said stressed panel.
2. comprehensive frictional resistance meter as claimed in claim 1 is characterized in that, said comprehensive frictional resistance meter adopts installation nut or welding manner and said open caisson to fix.
3. comprehensive frictional resistance meter as claimed in claim 2 is characterized in that said comprehensive frictional resistance meter is fixedly installed on each limit of said protection box.
4. comprehensive frictional resistance meter as claimed in claim 1 is characterized in that, said guide rail is fixed through bolt and said stressed panel.
5. comprehensive frictional resistance meter as claimed in claim 1 is characterized in that said protection box and said fixed panel are one-body molded.
6. comprehensive frictional resistance meter as claimed in claim 5 is characterized in that, the second baffle of said protection box is square, and the height of said protection box is less than its length and width size.
7. comprehensive frictional resistance meter as claimed in claim 1 is characterized in that said stressed panel is steel or concrete material.
8. comprehensive frictional resistance meter as claimed in claim 1 is characterized in that, said first stiffener and said second stiffener are symmetrical set, and said first stiffener and said second stiffener are steel material.
9. comprehensive frictional resistance meter as claimed in claim 1 is characterized in that said block media is a watertight rubber.
10. comprehensive frictional resistance meter as claimed in claim 1 is characterized in that, said first backup plate and the said second backup plate thickness originally do not produce the sag design according to said first backup plate and said second backup plate in test process.
11. comprehensive frictional resistance meter as claimed in claim 1 is characterized in that said stress is counted the reinforcement stresses meter.
12. comprehensive frictional resistance meter as claimed in claim 1 is characterized in that the direction of said stressometer is consistent with said guide rail direction.
13. comprehensive frictional resistance meter as claimed in claim 1 is characterized in that the lifting surface area of said flexible earth pressure gauge equates with the lifting surface area of said stressed panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210138208.0A CN102817344B (en) | 2012-05-04 | 2012-05-04 | Comprehensive frictional resistance meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210138208.0A CN102817344B (en) | 2012-05-04 | 2012-05-04 | Comprehensive frictional resistance meter |
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| Publication Number | Publication Date |
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| CN102817344A true CN102817344A (en) | 2012-12-12 |
| CN102817344B CN102817344B (en) | 2014-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210138208.0A Expired - Fee Related CN102817344B (en) | 2012-05-04 | 2012-05-04 | Comprehensive frictional resistance meter |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104110021A (en) * | 2014-07-09 | 2014-10-22 | 同济大学 | Z-type or U-type cross section steel sheet pile lateral soil pressure monitoring method |
| CN104278665A (en) * | 2014-09-28 | 2015-01-14 | 河海大学 | Underwater burying device and method for steel open caisson side wall and blade foot soil piezometer |
| CN113686778A (en) * | 2021-08-24 | 2021-11-23 | 浙江同禾传感技术有限公司 | Friction meter, friction monitoring system and monitoring method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1882780A1 (en) * | 2006-07-07 | 2008-01-30 | Jean Marie Renovation, SARL | Device for measuring the resistance of a micropile |
| CN101221075A (en) * | 2007-12-24 | 2008-07-16 | 中国水电顾问集团中南勘测设计研究院 | Frictional resistance meter and its testing method |
| CN101575847A (en) * | 2009-06-02 | 2009-11-11 | 中铁第四勘察设计院集团有限公司 | Effective stress spade |
| CN101736728A (en) * | 2009-12-16 | 2010-06-16 | 河海大学 | Elastic beam type side wall frictional resistance dynamometer |
| CN101818505A (en) * | 2010-04-24 | 2010-09-01 | 上海交通大学 | Soil pressure testing method for a cutting edge of caisson |
-
2012
- 2012-05-04 CN CN201210138208.0A patent/CN102817344B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1882780A1 (en) * | 2006-07-07 | 2008-01-30 | Jean Marie Renovation, SARL | Device for measuring the resistance of a micropile |
| CN101221075A (en) * | 2007-12-24 | 2008-07-16 | 中国水电顾问集团中南勘测设计研究院 | Frictional resistance meter and its testing method |
| CN101575847A (en) * | 2009-06-02 | 2009-11-11 | 中铁第四勘察设计院集团有限公司 | Effective stress spade |
| CN101736728A (en) * | 2009-12-16 | 2010-06-16 | 河海大学 | Elastic beam type side wall frictional resistance dynamometer |
| CN101818505A (en) * | 2010-04-24 | 2010-09-01 | 上海交通大学 | Soil pressure testing method for a cutting edge of caisson |
Non-Patent Citations (1)
| Title |
|---|
| 韩晓雷等: "改进直剪仪在沉井侧摩阻力研究中的应用", 《长春工程学院学报（自然科学版）》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104110021A (en) * | 2014-07-09 | 2014-10-22 | 同济大学 | Z-type or U-type cross section steel sheet pile lateral soil pressure monitoring method |
| CN104110021B (en) * | 2014-07-09 | 2016-04-20 | 同济大学 | Z-type or U-shaped cross section metal sheet pile side direction soil monitoring method |
| CN104278665A (en) * | 2014-09-28 | 2015-01-14 | 河海大学 | Underwater burying device and method for steel open caisson side wall and blade foot soil piezometer |
| CN104278665B (en) * | 2014-09-28 | 2016-01-06 | 河海大学 | Steel open caisson sidewall and sword pin earth pressure gauge embedded device and method for embedding thereof under water |
| CN113686778A (en) * | 2021-08-24 | 2021-11-23 | 浙江同禾传感技术有限公司 | Friction meter, friction monitoring system and monitoring method |
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| Publication number | Publication date |
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| CN102817344B (en) | 2014-10-22 |
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