CN108612075A - A method of monitoring deep basal pit horizontal displacement - Google Patents
A method of monitoring deep basal pit horizontal displacement Download PDFInfo
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- CN108612075A CN108612075A CN201810489698.6A CN201810489698A CN108612075A CN 108612075 A CN108612075 A CN 108612075A CN 201810489698 A CN201810489698 A CN 201810489698A CN 108612075 A CN108612075 A CN 108612075A
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- line
- datum mark
- point
- pit
- horizontal displacement
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D1/00—Investigation of foundation soil in situ
Abstract
The present invention provides a kind of method of monitoring deep basal pit horizontal displacement, is related to construction account technical field.This method includes：Monitoring point is set up being intended to job location, plane right-angle coordinate is determined by monitoring point；Monitoring point is selected according to establishment of coordinate system rectangle datum line and in rectangle datum line；Datum mark is selected in a line of rectangle datum line, and finds the datum mark in corresponding another a line；The parameter needed for pit retaining monitoring point horizontal displacement is calculated by total station survey；Calculate Foundation Pit.A kind of method of monitoring deep basal pit horizontal displacement provided by the invention, monitoring point can be established arbitrarily on rectangle datum line, and it can arbitrarily switch monitoring point, not by restriction of obstacle, most of foundation pits are applicable in, substantially increase the monitoring efficiency of irregular shape foundation pit, opposite minor angle method repeatedly sets station, angle limitation, and this method has more superiority, in addition, this method greatly improves accuracy in such a way that survey calculation takes mean value.
Description
Technical field
The present invention relates to construction account technical fields, and in particular to a method of monitoring deep basal pit horizontal displacement.
Background technology
With the fast development of China's economy, foundation pit construction is carried out in the complex environment of city, to the supporting knot of foundation pit
One is higher for the required precision of structure horizontal displacement monitoring.Currently, horizontal displacement of foundation pit pile top, which monitors common method, mainly collimation
Collimation method, small horn cupping, resection method, method of polar coordinates etc..Collimation line method and small horn cupping measure simplicity, and amount of calculation is small, measure
Precision is also higher, but these methods generally require repeatedly to set station, and the consuming time is long, and heavy workload, benefit is low, influences precision
Uncertain factor is more, and the monitoring of monitoring personnel is very complicated.
Invention content
In view of the problems of the existing technology, the present invention provides a kind of method of monitoring deep basal pit horizontal displacement, without more
It is secondary to set station, only a rectangle datum line need to be established in irregular foundation pit, and rectangle datum line is built on the outside of entire foundation pit
Vertical, in the horizontal displacement for quickly and accurately measuring building foundation pit using the coordinate on datum line, reduction sets station number, improves
Field monitoring efficiency, while having saved engineering cost.
To achieve the goals above, a method of monitoring deep basal pit horizontal displacement includes the following steps：
Step 1：According to pit retaining monitoring specification, two monitoring points a and b are set up being intended to job location, pass through 2 points of utilizations of a, b
Total powerstation determines plane right-angle coordinate c；
Step 2：By centered on foundation pit at coordinate system c, rectangle datum line o is established around foundation pit, it is every on rectangle datum line o
The position of any is determined by rectangular coordinate system c, and a point k is arbitrarily selected to be supervised in the monitoring point that foundation pit periphery has marked
It surveys；
Step 3：In a line of the rectangle datum line o of foundation choose datum mark m, datum mark m by total powerstation into
Row measures, and finds the datum mark n on another datum line parallel with datum line where datum mark m, the line of datum mark m and n
It is vertical with datum line where m, n；
Step 4：By total station survey calculate pit retaining monitoring point horizontal displacement needed for parameter, including datum mark m with appoint
Air line distance L between meaning point k1, air line distance L between datum mark n and arbitrary point k2, between two datum mark m and n line and
Connect between line and datum mark n and arbitrary point k between the angle α of line, two datum mark m and n between datum mark m and arbitrary point k
Air line distance L between angle β, the datum mark m of line and the point k ' after the k change in displacement of arbitrary point1', datum mark n and arbitrary point k
The air line distance L between point k ' after change in displacement2', line and datum mark m and arbitrary point k displacements between two datum mark m and n
The angle α of line between point k ' after variation ', line and datum mark n and arbitrary point k change in displacement between two datum mark m and n
The angle β ' of line between point k ' afterwards；
Step 5：According to the parameter measured in step 4, pit retaining monitoring point horizontal displacement, the i.e. horizontal position of foundation pit are calculated
It moves；
The formula for calculating pit retaining monitoring point horizontal displacement is as follows：
D=(D1+D2)/2；
S=(S1+S2)/2；
Wherein, D1For the horizontal displacement of foundation pit datum mark m vertical foundation pits side variation, D2For foundation pit datum mark n vertical foundation pits side
The horizontal displacement of variation, D are the average level displacement of foundation pit datum mark vertical foundation pit side variation, S1It is parallel for foundation pit datum mark m
The horizontal displacement of foundation pit side variation, S2For the horizontal displacement of the parallel foundation pit side variations of foundation pit datum mark n, S puts down for foundation pit datum mark
The average level displacement of row foundation pit side variation；The horizontal displacement of foundation pit datum mark m, n vertical foundation pit side variation and parallel base
The calculation formula for cheating the horizontal displacement of side variation is as follows：
D1=(L1 cosα-L1′cosα′)；
D2=(L2cosβ-L2′cosβ′)；
S1=(L1 sinα-L1＇ sin α ')；
S2=(L2sinβ-L2＇ sin β ').
Beneficial effects of the present invention：
The present invention proposes a kind of method of monitoring deep basal pit horizontal displacement, establishes coordinate system by datum mark, passes through coordinate
System, centered on foundation pit, rectangle datum line is established around foundation pit, by datum mark on rectangle datum line and monitoring point line with
The angular relationship of two datum mark lines calculates the horizontal displacement of monitoring point, and simple, quick, easy, this method can be in rectangle
Monitoring point is established arbitrarily on datum line, and can arbitrarily switch monitoring point, it is equal for most of foundation pits not by restriction of obstacle
It is applicable in, substantially increases the monitoring efficiency of irregular shape foundation pit, opposite minor angle method repeatedly sets station, angle limitation, we
Method has more superiority, in addition, this method in such a way that survey calculation takes mean value, greatly improves accuracy.
Description of the drawings
Fig. 1 is the method flow diagram that deep basal pit horizontal displacement is monitored in the embodiment of the present invention；
Fig. 2 is the field monitoring schematic diagram that deep basal pit horizontal displacement is monitored in the embodiment of the present invention.
Specific implementation mode
It is right in the following with reference to the drawings and specific embodiments in order to make the purpose of the present invention, technical solution and advantage be more clear
The present invention is described in further details.Described herein specific examples are only used to explain the present invention, is not used to limit this
Invention.
A method of monitoring deep basal pit horizontal displacement, flow as shown in Figure 1, field monitoring schematic diagram as shown in Fig. 2, tool
Body method is as described below：
Step 1：According to pit retaining monitoring specification, two monitoring points a and b are set up being intended to job location, pass through 2 points of utilizations of a, b
Total powerstation determines plane right-angle coordinate c.
Step 2：By centered on foundation pit at coordinate system c, rectangle datum line o is established around foundation pit, it is every on rectangle datum line o
The position of any is determined by rectangular coordinate system c, and a point k is arbitrarily selected to be supervised in the monitoring point that foundation pit periphery has marked
It surveys；
Step 3：In a line of the rectangle datum line o of foundation choose datum mark m, datum mark m by total powerstation into
Row measures, and finds the datum mark n on another datum line parallel with datum line where datum mark m, the line of datum mark m and n
It is vertical with datum line where m, n.
Step 4：By total station survey calculate pit retaining monitoring point horizontal displacement needed for parameter, including datum mark m with appoint
Air line distance L between meaning point k1, air line distance L between datum mark n and arbitrary point k2, between two datum mark m and n line and
Connect between line and datum mark n and arbitrary point k between the angle α of line, two datum mark m and n between datum mark m and arbitrary point k
Air line distance L between angle β, the datum mark m of line and the point k ＇ after the k change in displacement of arbitrary point1＇, datum mark n and arbitrary point k
The air line distance L between point k ＇ after change in displacement2Line and datum mark m and arbitrary point k displacements between ＇, two datum mark m and n
The angle α of line between point k ＇ after variation ', line and datum mark n and arbitrary point k change in displacement between two datum mark m and n
The angle β ' of line between point k ' afterwards.
Step 5：According to the parameter measured in step 4, pit retaining monitoring point horizontal displacement, the i.e. horizontal position of foundation pit are calculated
It moves.
Shown in the formula such as formula (1) for calculating pit retaining monitoring point horizontal displacement and formula (2)：
D=(D1+D2)/2 (1)
S=(S1+S2)/2 (2)
Wherein, D1For the horizontal displacement of foundation pit datum mark m vertical foundation pits side variation, D2For foundation pit datum mark n vertical foundation pits side
The horizontal displacement of variation, D are the average level displacement of foundation pit datum mark vertical foundation pit side variation, S1It is parallel for foundation pit datum mark m
The horizontal displacement of foundation pit side variation, S2For the horizontal displacement of the parallel foundation pit side variations of foundation pit datum mark n, S puts down for foundation pit datum mark
The average level displacement of row foundation pit side variation；The horizontal displacement of foundation pit datum mark m, n vertical foundation pit side variation and parallel base
Shown in calculation formula such as formula (the 3)-formula (6) for cheating the horizontal displacement of side variation：
D1=(L1 cosα-L1′cosα′) (3)
D2=(L2 cosβ-L2′cosβ′) (4)
S1=(L1 sinα-L1′sinα′) (5)
S2=(L2 sinβ-L2′sinβ′) (6)
By step 4 it is found that the present embodiment need to only measure the number of degrees of 4 length of sides and 4 angles, formula (3)-formula is brought into
(6) horizontal displacement of foundation pit can be obtained according to formula (1) and formula (2), it is simple, quick, easy, it substantially increases and does not advise
The then monitoring efficiency of shape foundation pit, opposite minor angle method repeatedly set station, angle limitation, and this method has more superiority.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, it will be understood by those of ordinary skill in the art that；It still may be used
To modify to the technical solution recorded in previous embodiment, either which part or all technical features are equal
It replaces；Thus these modifications or replacements, defined by the claims in the present invention that it does not separate the essence of the corresponding technical solution
Range.
Claims (1)
1. a kind of method of monitoring deep basal pit horizontal displacement, which is characterized in that include the following steps：
Step 1：According to pit retaining monitoring specification, two monitoring points a and b are set up being intended to job location, whole station is utilized at 2 points by a, b
Instrument determines plane right-angle coordinate c；
Step 2：By centered on foundation pit at coordinate system c, rectangle datum line o is established around foundation pit, every bit on rectangle datum line o
Position determined by rectangular coordinate system c, arbitrarily select a point k to be monitored in the monitoring point that foundation pit periphery has marked；
Step 3：Datum mark m is chosen in a line of the rectangle datum line o of foundation, is surveyed by total powerstation in datum mark m
Amount finds the datum mark n on another datum line parallel with datum line where datum mark m, line and m, n of datum mark m and n
Place datum line is vertical；
Step 4：The parameter needed for pit retaining monitoring point horizontal displacement, including datum mark m and arbitrary point k are calculated by total station survey
Between air line distance L1, air line distance L between datum mark n and arbitrary point k2, line and datum mark between two datum mark m and n
Between m and arbitrary point k between the angle α of line, two datum mark m and n between line and datum mark n and arbitrary point k line folder
The air line distance L between point k ' after angle beta, datum mark m and arbitrary point k change in displacement1', datum mark n and arbitrary point k displacements become
The air line distance L between point k ' after change2', between two datum mark m and n after line and datum mark m and arbitrary point k change in displacement
Point k ' between line angle α ', line and datum mark n and the point k ' after the k change in displacement of arbitrary point between two datum mark m and n
Between line angle β '；
Step 5：According to the parameter measured in step 4, pit retaining monitoring point horizontal displacement, the i.e. horizontal displacement of foundation pit are calculated；
The formula for calculating pit retaining monitoring point horizontal displacement is as follows：
D=(D1+D2)/2；
S=(S1+S2)/2；
Wherein, D1For the horizontal displacement of pit retaining monitoring point m vertical foundation pits side variation, D2Change for pit retaining monitoring point n vertical foundation pits side
Horizontal displacement, D be pit retaining monitoring point vertical foundation pit side variation average level displacement, S1For the parallel foundation pits of pit retaining monitoring point m
The horizontal displacement of side variation, S2For the horizontal displacement of the parallel foundation pit side variations of pit retaining monitoring point m, S is the parallel base of pit retaining monitoring point
Cheat the average level displacement of side variation；The horizontal displacement of pit retaining monitoring point m, n vertical foundation pit side variation and pit retaining monitoring point
M, the calculation formula of the horizontal displacement of the parallel foundation pit side variations of n is as follows：
D1=(L1cosα-L1′cosα′)；
D2=(L2cosβ-L2′cosβ′)；
S1=(L1sinα-L1' sin α ＇)；
S2=(L2sinβ-L2' sin β ＇).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810489698.6A CN108612075B (en) | 2018-05-21 | 2018-05-21 | Method for monitoring horizontal displacement of deep foundation pit |
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| CN201810489698.6A CN108612075B (en) | 2018-05-21 | 2018-05-21 | Method for monitoring horizontal displacement of deep foundation pit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111457848A (en) * | 2020-05-19 | 2020-07-28 | 四川合众精准科技有限公司 | Method and system for measuring displacement through coordinate change between adjacent monitoring points |
| CN111664793A (en) * | 2020-06-15 | 2020-09-15 | 衡橡科技股份有限公司 | Building movement track monitoring method |
| CN113804148A (en) * | 2021-08-04 | 2021-12-17 | 吉林建筑科技学院 | Measuring adjustment method based on dynamic reference |
| CN113804148B (en) * | 2021-08-04 | 2024-04-19 | 吉林建筑科技学院 | Dynamic reference-based measurement adjustment method |
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| CN102628281A (en) * | 2012-04-10 | 2012-08-08 | 长沙理工大学 | Horizontal shift monitoring method for measuring points in foundation pit engineering |
| CN103526783A (en) * | 2013-10-21 | 2014-01-22 | 中航勘察设计研究院有限公司 | Method for measuring horizontal displacement of building foundation ditch |
| CN104988928A (en) * | 2015-05-25 | 2015-10-21 | 浙江省围海建设集团股份有限公司 | Method for monitoring foundation pit excavation horizontal displacement in real-time manner based on digital images |
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Patent Citations (6)
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| JP2001289956A (en) * | 2000-04-04 | 2001-10-19 | Taisei Corp | Ground displacement measuring method |
| CN102628281A (en) * | 2012-04-10 | 2012-08-08 | 长沙理工大学 | Horizontal shift monitoring method for measuring points in foundation pit engineering |
| CN103526783A (en) * | 2013-10-21 | 2014-01-22 | 中航勘察设计研究院有限公司 | Method for measuring horizontal displacement of building foundation ditch |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111457848A (en) * | 2020-05-19 | 2020-07-28 | 四川合众精准科技有限公司 | Method and system for measuring displacement through coordinate change between adjacent monitoring points |
| CN111664793A (en) * | 2020-06-15 | 2020-09-15 | 衡橡科技股份有限公司 | Building movement track monitoring method |
| CN113804148A (en) * | 2021-08-04 | 2021-12-17 | 吉林建筑科技学院 | Measuring adjustment method based on dynamic reference |
| CN113804148B (en) * | 2021-08-04 | 2024-04-19 | 吉林建筑科技学院 | Dynamic reference-based measurement adjustment method |
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| CN108612075B (en) | 2020-07-07 |
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