CN112097584B - Use method of device for measuring horizontal safe distance of foundation pit - Google Patents
Use method of device for measuring horizontal safe distance of foundation pit Download PDFInfo
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- CN112097584B CN112097584B CN202010759169.0A CN202010759169A CN112097584B CN 112097584 B CN112097584 B CN 112097584B CN 202010759169 A CN202010759169 A CN 202010759169A CN 112097584 B CN112097584 B CN 112097584B
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- pointer
- dial
- rotating shaft
- steel ruler
- fixing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B3/00—Measuring instruments characterised by the use of mechanical techniques
- G01B3/56—Gauges for measuring angles or tapers, e.g. conical calipers
- G01B3/563—Protractors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B3/00—Measuring instruments characterised by the use of mechanical techniques
- G01B3/02—Rulers with scales or marks for direct reading
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
Abstract
The invention relates to a device for measuring the horizontal safe distance of a foundation pit, which comprises a dial, a pointer, a rotating shaft, a vertical steel ruler, a horizontal steel ruler, a pointer fixing knob and an adjustable fixing clamping groove, wherein the dial is in a fan shape, the angle range is 0-90 degrees, scale marks which are uniformly distributed along the direction of a quarter of a circular ring are engraved on the dial, the rotating shaft is positioned at the central angle of the fan-shaped dial, the rotating shaft is used for fixing the pointer, the size of the rotating shaft ensures that the axis position of the pointer does not move, the pointer is connected with the dial through the rotating shaft, and the pointer rotates on the dial to an inner friction angle
The angle direction of the pointer is fixed by rotating the pointer fixing knob, and the pointer fixing knob is connected with the pointer through threads; the right-angle side of fan-shaped calibrated scale is located to vertical steel rule, the one end of horizontal steel rule is fixed on vertical steel rule through adjusting fixed slot, adjusts fixed slot and realizes sliding at any time and fixed horizontal steel rule. The invention has strong universality, is convenient to carry and can be repeatedly used.
Description
Technical Field
The invention relates to foundation pit engineering, in particular to a use method of a device for measuring the horizontal safe distance of a foundation pit.
Background
At present, the engineering usually obtains the safe distance of the self-stabilizing angle of the soil body through calculation according to the known excavation depth of the foundation pit and the internal friction angle of the soil layer. The inner friction angle alpha of the soil layer can be obtained by checking a geological survey report, the excavation depth H of the foundation pit is obtained through on-site actual measurement, and the horizontal safe distance L = H/tan alpha is obtained through a formula.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a using method of a device for measuring the horizontal safe distance of a foundation pit, which is used for conveniently and quickly measuring the critical self-stabilizing angle safe distance of the earthwork of the foundation pit and improving the safety of the foundation pit.
In order to solve the technical problem, the invention is realized as follows:
the device for measuring the horizontal safe distance of the foundation pit comprises a dial, a pointer, a rotating shaft, a vertical steel ruler, a horizontal steel ruler, a pointer fixing knob and an adjustable fixing clamping groove, wherein the dial is fan-shaped, the angle range is 0-90 degrees, scale lines which are uniformly distributed along the direction of a quarter ring are engraved on the dial, the rotating shaft is located at the central angle of the fan-shaped dial, the rotating shaft is a pointer rotating fixing shaft, the rotating shaft is used for fixing the pointer, the size of the rotating shaft ensures that the axis position of the pointer is not moved, the pointer is connected with the dial through the rotating shaft, and the pointer rotates to the angle of an inner friction angle on the dial
The angle direction of the pointer is fixed by rotating the pointer fixing knob, and the pointer fixing knob is connected with the pointer through threads; the vertical steel ruler is arranged on the right-angle side of the sector dial, one end of the transverse steel ruler is fixed on the vertical steel ruler through the adjusting and fixing clamping groove, the adjusting and fixing clamping groove has the elasticity function, and the transverse steel ruler can be slid and fixed at any time; the dial is made of stainless steel or nonmetal materials, and the scale lines and numbers adopt an indentation process or a spray painting process, so that the dial is wear-resistant and is not easy to fall off; the pointer is made of metal materials, has rigidity meeting the use requirement, is not easy to deform, and has the width that the rotating shaft end gradually thins towards the tail end; the vertical steel ruler is used for setting the excavation depth of the foundation pit and is made of stainless steel or nonmetal materials; the scale value is in millimeter unit, the scale range is 0-1000mm, and the scale mark and the number adopt an indentation process or a spray painting process; the transverse steel ruler is used for measuring horizontal distance and is made of stainless steel or nonmetal materials, the scale value is in millimeter unit, the scale range is 0-1000mm, and the scale marks and the numbers adopt an indentation process or a spray painting process; characterised by measuringThe use method of the foundation pit horizontal safety distance device comprises the following steps:
the method comprises the following steps: firstly, looking up a geological survey report or inquiring a foundation soil physical and mechanical index design parameter table according to the soil texture at the edge of a foundation pit to obtain an internal friction angle alpha;
step two: poking the poking position at the tail end of the pointer to enable the pointer to rotate to the position of the friction angle alpha;
step three: the pointer and the device are fixed by rotating the appointed fixed button, so that the pointer is prevented from shaking;
step four: observing the scale of the vertical ruler, sliding the horizontal steel ruler to the excavated depth of the vertical steel ruler
After treatment, fixing an adjusting and fixing clamping groove at the right end of the transverse steel ruler;
step five: and the reading of the intersection point of the transverse steel ruler and the pointer is the scaling value of the safe distance length from the edge of the foundation pit, and the reading is multiplied by 100 to obtain the actual safe distance value L.
The invention has the beneficial effects that: the measurement is accurate and rapid. The device can directly read out the horizontal accurate distance without calculation according to the known internal friction angle and the current excavation depth.
Simple and practical, the device is simple, conveniently carries, easily actual study use, save time. The safe red line distance from the edge of the foundation pit can be obtained at any time according to the soil property change and the excavation depth.
Drawings
The invention is described in further detail below with reference to the following figures and embodiments:
fig. 1 is a sectional view of a foundation pit.
Fig. 2 is a schematic structural diagram of the present application.
Detailed Description
As shown in fig. 1 and 2: a device for measuring the horizontal safe distance of a foundation pit comprises a dial 1, a pointer 2, a rotating shaft 3, a vertical steel ruler 4, a transverse steel ruler 5, a pointer fixing knob 6 and an adjustable fixing clamping groove 7;
the dial is fan-shaped, and the angle range is 0-90 degreesThe graduated disc is carved with scale lines which are uniformly distributed along the direction of a quarter of a circular ring, and the precise graduated disc is mainly used for precisely measuring the internal friction angle of soil
Typically 0 degree<α<90°，
Can be obtained from the geological survey report, and can also inquire the design parameter table of physical and mechanical indexes of foundation soil according to the soil property condition.
The rotating shaft is positioned at the central angle of the fan-shaped dial, the rotating shaft is a pointer rotating fixing shaft, the rotating shaft is used for fixing a pointer, the size of the rotating shaft ensures that the axis position of the pointer does not move, the pointer is connected with the dial through the rotating shaft, and the pointer rotates on the dial to reach the angle of an internal friction angle
Through the angle direction of the fixed pointer of the fixed knob 6 rotation of pointer, the fixed knob 6 of pointer is connected with pointer 2 through the screw thread, prevents that pointer and steel chi from rocking.
The vertical steel ruler is arranged on the right-angle side of the fan-shaped dial scale, and the reading on the vertical steel ruler is the excavation depth of the foundation pit
。（
For the excavation depth of the foundation pit, the scale is 1
One end of the transverse steel rule 5 is fixed on the vertical steel rule 4 through the adjusting fixing clamping groove 7, the adjusting fixing clamping groove 7 has the elasticity function, the transverse steel rule 5 can be slid and fixed at any time, the transverse steel rule 5 can be fixed through the pointer fixing knob after sliding on the vertical steel rule 4 to the excavation depth scale value, the reading of the intersection point of the transverse steel rule 5 and the pointer 2 is the zoom value of the safe distance length from the edge of the foundation pit, and the reading is multiplied by 100 to obtain the safe distance actual value.
Furthermore, the dial 1 is made of stainless steel or nonmetal materials, and the scale marks and the numbers adopt an indentation process or a painting process, so that the dial is wear-resistant and is not easy to fall off.
Furthermore, the pointer 2 is made of metal, has rigidity meeting use requirements, is not easy to deform, and has a width that the rotating shaft end gradually thins towards the tail end.
Further, vertical steel rule 4 is used for setting for the foundation ditch excavation depth, and the material is stainless steel or non-metal material. The scale value is in millimeter unit, the scale range is 0-1000mm, and the scale mark and number are formed by indentation process or spray drawing process.
Further, the transverse steel ruler 5 is used for measuring the horizontal distance and is made of stainless steel or non-metal materials, the scale value is in millimeter unit, the scale range is 0-1000mm, and the scale marks and the numbers adopt an indentation process or a spray painting process.
The method utilizes the principle of similar triangles, and obtains the safe horizontal distance value by directly reading numerical values by utilizing known quantity.
A use method of a device for measuring the horizontal safe distance of a foundation pit comprises the following steps:
the method comprises the following steps: firstly, a geological survey report is consulted, or a foundation soil physical and mechanical index design parameter table is inquired according to the soil texture of the edge of the foundation pit to obtain an internal friction angle alpha.
Step two: the end of the dial pointer 2 is dialed to rotate the pointer to the position of the friction angle alpha.
Step three: the pointer and the device are fixed by rotating the appointed fixed button 6, and the pointer is prevented from shaking.
Step four: observing the scale of the vertical ruler, sliding 5 transverse steel rulers to 4 vertical steel rulers to excavate the depth
After the adjustment, the adjusting and fixing clamping groove 7 at the right end of the transverse steel ruler 5 is fixed.
Step five: and the reading of the intersection point of the transverse steel ruler 5 and the pointer is the scaling value of the safety distance length from the edge of the foundation pit, and the reading is multiplied by 100 to obtain the actual value L of the safety distance of the edge of the foundation pit.
Claims (1)
1. The device for measuring the horizontal safe distance of the foundation pit comprises a dial, a pointer, a rotating shaft, a vertical steel ruler, a horizontal steel ruler, a pointer fixing knob and an adjustable fixing clamping groove, wherein the dial is fan-shaped, the angle range is 0-90 degrees, scale lines which are uniformly distributed along the direction of a quarter ring are engraved on the dial, the rotating shaft is located at the central angle of the fan-shaped dial, the rotating shaft is a pointer rotating fixing shaft, the rotating shaft is used for fixing the pointer, the size of the rotating shaft ensures that the axis position of the pointer is not moved, the pointer is connected with the dial through the rotating shaft, and the pointer rotates to the angle of an inner friction angle on the dial
The angle direction of the pointer is fixed by rotating the pointer fixing knob, and the pointer fixing knob is connected with the pointer through threads; the vertical steel ruler is arranged on the right-angle side of the sector dial, one end of the transverse steel ruler is fixed on the vertical steel ruler through the adjusting and fixing clamping groove, the adjusting and fixing clamping groove has the elasticity function, and the transverse steel ruler can slide and be fixed at any time; the dial is made of stainless steel or nonmetal materials, and the scale marks and the numbers adopt an indentation process or a spray painting process, so that the dial is wear-resistant and is not easy to fall off; the pointer is made of metal materials, has rigidity meeting the use requirement, is not easy to deform, and has the width that the rotating shaft end gradually thins towards the tail end; the vertical steel ruler is used for setting the excavation depth of the foundation pit and is made of stainless steel or nonmetal materials; the scale value is in millimeter unit, the scale range is 0-1000mm, and the scale mark and the number adopt an indentation process or a spray painting process; the transverse steel ruler is used for measuring horizontal distance and is made of stainless steel or nonmetal materials, the scale value is in millimeter unit, the scale range is 0-1000mm, and the scale marks and numbers adopt an indentation process or a spray painting process; the method for using the device for measuring the horizontal safe distance of the foundation pit is characterized by comprising the following steps:
the method comprises the following steps: firstly, looking up a geological survey report, or inquiring a foundation soil physical and mechanical index design parameter table according to the soil texture at the edge of a foundation pit to obtain an internal friction angle alpha;
step two: the poking position at the tail end of the pointer is poked to enable the pointer to rotate to the position of the friction angle alpha;
step three: the pointer and the device are fixed by rotating the appointed fixed button, so that the pointer is prevented from shaking;
step four: observing the scale of the vertical ruler, sliding the horizontal steel ruler to the excavated depth of the vertical steel ruler
After the positioning, fixing an adjusting and fixing clamping groove at the right end of the transverse steel ruler;
step five: and the reading of the intersection point of the transverse steel ruler and the pointer is the scaling value of the safe distance length from the edge of the foundation pit, and the reading is multiplied by 100 to obtain the actual safe distance value L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010759169.0A CN112097584B (en) | 2020-07-31 | 2020-07-31 | Use method of device for measuring horizontal safe distance of foundation pit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010759169.0A CN112097584B (en) | 2020-07-31 | 2020-07-31 | Use method of device for measuring horizontal safe distance of foundation pit |
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| CN112097584A CN112097584A (en) | 2020-12-18 |
| CN112097584B true CN112097584B (en) | 2023-03-03 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2187299Y (en) * | 1992-12-11 | 1995-01-11 | 段家雄 | Inclination measuring instrument |
| GB2450162A (en) * | 2007-06-16 | 2008-12-17 | Qualipro Entpr Co Ltd | A combination measuring tool |
| CN203530986U (en) * | 2013-10-20 | 2014-04-09 | 靳海兴 | Assistant positioning device for building foundation pits |
| CN204286365U (en) * | 2014-12-30 | 2015-04-22 | 姜泓任 | Foundation pit side-wall displacement monitor |
| CN108914996A (en) * | 2018-09-03 | 2018-11-30 | 温州市林鸥工程建设监理有限公司 | A kind of foundation pit displacement automatic monitoring system and method |
| CN208996107U (en) * | 2018-09-21 | 2019-06-18 | 苏州常宏建筑设计研究院有限公司 | A kind of foundation pit side-wall displacement monitor |
| CN110617799A (en) * | 2019-11-05 | 2019-12-27 | 西南交通大学 | Repose angle measuring device |
| CN211085217U (en) * | 2019-11-30 | 2020-07-24 | 青岛亿联建设集团股份有限公司 | Inclination measuring device for foundation pit support of building engineering construction |
-
2020
- 2020-07-31 CN CN202010759169.0A patent/CN112097584B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2187299Y (en) * | 1992-12-11 | 1995-01-11 | 段家雄 | Inclination measuring instrument |
| GB2450162A (en) * | 2007-06-16 | 2008-12-17 | Qualipro Entpr Co Ltd | A combination measuring tool |
| CN203530986U (en) * | 2013-10-20 | 2014-04-09 | 靳海兴 | Assistant positioning device for building foundation pits |
| CN204286365U (en) * | 2014-12-30 | 2015-04-22 | 姜泓任 | Foundation pit side-wall displacement monitor |
| CN108914996A (en) * | 2018-09-03 | 2018-11-30 | 温州市林鸥工程建设监理有限公司 | A kind of foundation pit displacement automatic monitoring system and method |
| CN208996107U (en) * | 2018-09-21 | 2019-06-18 | 苏州常宏建筑设计研究院有限公司 | A kind of foundation pit side-wall displacement monitor |
| CN110617799A (en) * | 2019-11-05 | 2019-12-27 | 西南交通大学 | Repose angle measuring device |
| CN211085217U (en) * | 2019-11-30 | 2020-07-24 | 青岛亿联建设集团股份有限公司 | Inclination measuring device for foundation pit support of building engineering construction |
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