CN203375934U - Foundation pit enclosure structure stratification horizontal displacement measurement device - Google Patents
Foundation pit enclosure structure stratification horizontal displacement measurement device Download PDFInfo
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- CN203375934U CN203375934U CN201320373786.2U CN201320373786U CN203375934U CN 203375934 U CN203375934 U CN 203375934U CN 201320373786 U CN201320373786 U CN 201320373786U CN 203375934 U CN203375934 U CN 203375934U
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- foundation pit
- measurement mechanism
- laser range
- range sensor
- alignment device
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Abstract
The utility model provides a foundation pit enclosure structure stratification horizontal displacement measurement device. The measurement device comprises a relative displacement measurement device and an absolute displacement measurement device. The relative displacement measurement device comprises a first alignment device which is fixedly arranged on the side of a first enclosure structure, a first laser ranging sensor which is arranged on the first alignment device, and a displacement reflector which is arranged on a second enclosure structure. The absolute displacement measurement device comprises a second alignment device which is fixedly arranged at the top of the first enclosure structure, a second laser ranging sensor which is arranged on the second alignment device, and a reference reflector which is outside a foundation pit. First and second alignment devices respectively comprise a base ball socket in which a ball socket is arranged, wherein the base ball socket is matched with the ball face of a ball head rotor. The ball head rotor is fixedly connected with first and second laser ranging sensors, and a locking device is arranged between the ball socket and the ball head rotor. The measurement device provided by the utility model has the advantages of simple structure, convenient and fast measurement process and high measurement accuracy.
Description
Technical field
The utility model relates to a kind of device of measuring for the horizontal shift of base pit engineering building enclosure different depth place.Particularly relating to a kind of foundation pit enclosure structure both sides is the measurement mechanism that the foundation pit enclosure structure horizontal shift is carried out in substantially parallel situation lower leaf.
Background technology
In the Foundation Pit Construction process, the horizontal shift at foundation pit enclosure structure different depth place is the main evaluation index of base pit engineering security, thereby is the main monitoring project in the foundation pit construction process.
The place's horizontal shift of foundation pit enclosure structure different depth is generally measured with tiltmeter by bury inclinometer pipe underground in building enclosure after.Inclinometer pipe is buried complexity underground, the measurement cost is high, measurement result is unstable, so precision is difficult to guarantee.The research that also has some horizontal shifts to foundation pit enclosure structure different depth place based on laser distance measuring principle to be measured both at home and abroad, the device that these researchs relate to all has more complicated structure, or larger size.During whole measurement, all need the stationary installation of laser range sensor is arranged on every one deck foundation pit enclosure structure, be easy to be subject to blasting vibration and mechanical collision, thereby affect measuring accuracy, even also may make measurement mechanism be broken.In addition, some laser range sensors are because the structure that is subject to stationary installation is limit, and the installation position of measuring point and instrument is equipped with to particular requirement, otherwise the Laser emission end can't find impact point to be measured.Every survey line all will be installed corresponding laser range finder stationary installation owing to measuring, and consumption is large, and expense is high, thereby do not have can widespread use in engineering reality.
The measuring method of existing foundation pit enclosure structure layering horizontal shift mainly contains axis method, minor angle method, total station instrument coordinate method of changing etc., the first two method adopts transit and steel ruler to be measured, the total station instrument coordinate method of changing is measured angle and distance by total powerstation simultaneously, utilizes reduction formula to calculate the horizontal shift value of foundation pit enclosure structure.Above various measuring method has certain drawback, axis method and minor angle method are higher to site requirements, the basic point of its surveying work to be selected in apart from foundation ditch nearby, in Excavation Process substantially motionless point, if the distance of basic point choice is longer, the steel ruler reading accuracy read from transit is just lower.Although total station instrument coordinate method of changing measuring accuracy is high, its measuring process is loaded down with trivial details, measures cost high.
The utility model content
The shortcoming of prior art in view of the above, the technical problems to be solved in the utility model is to provide a kind of measurement mechanism of simple in structure, easy for installation, foundation pit enclosure structure horizontal shift that the measurement result precision is high.
Reach for achieving the above object other relevant purposes, the utility model provides a kind of measurement mechanism of foundation pit enclosure structure layering horizontal shift, described foundation pit enclosure structure comprises the first building enclosure and the second building enclosure that is positioned at the foundation ditch both sides, and described first, second building enclosure includes collar tie beam and enclosure wall.The measurement mechanism that the utility model provides comprises a relative displacement measurement mechanism and an absolute displacement measuring apparatus, and described relative displacement measurement mechanism comprises the first alignment device of being fixedly mounted on the first building enclosure side, is arranged on the first laser range sensor on described the first alignment device and is arranged on the displacement reflecting piece on the second building enclosure; Described absolute displacement measuring apparatus comprises the second alignment device of being fixedly mounted on the first building enclosure end face, is arranged on the second laser range sensor and a benchmark reflecting piece on the second alignment device, the benchmark reflecting piece is fixedly installed on the datum of described the first building enclosure one side, described first, second alignment device includes a pedestal, be provided with a ball-and-socket in pedestal, ball-and-socket coordinates with a bulb rotor sphere, the bulb rotor is fixedly connected with described first, second laser range sensor, between described ball-and-socket and described bulb rotor, also is provided with locking device.
Preferably, on the bulb rotor, be fixed with screw, be connected by described screw between described first, second laser range sensor and described bulb rotor.
Preferably, described locking device is the lock-screw be installed on described pedestal, and the head of described lock-screw exposes to described pedestal, and the afterbody of described lock-screw stretches in described ball-and-socket.
Preferably, described the first alignment device is fixedly mounted on by the first setscrew on the side of collar tie beam of described the first building enclosure; Described the second alignment device is fixedly mounted on by the second setscrew on the end face of collar tie beam of described the first building enclosure.
Preferably, the end of described first, second setscrew all has screw thread, and described screw thread has regular length.
Preferably, all be connected with external triggering line and external trigger button on described first, second laser range sensor.
Preferably, described reference point is more than or equal to 5 times of the described excavation of foundation pit degree of depth to the distance of described the second laser range sensor.
As mentioned above, the measurement mechanism of foundation pit enclosure structure horizontal shift of the present utility model has following beneficial effect:
1. laser range sensor is arranged on the measuring point of foundation pit enclosure structure by a dismountable alignment device, alignment device is simple in structure, convenient to be installed and measured at any time, avoid measurement mechanism to be damaged, all do not affect the foundation ditch normal construction when installing and measuring, the measurement mechanism of whole foundation pit enclosure structure horizontal shift is easy to apply;
2. form point between the ball-and-socket of alignment device and bulb rotor and contact, effectively solved after the installation of traditional measurement device the larger error that causes when face between stationary installation contacts with button due to surveying instrument and face and contacted the problems such as the measurement result poor stability that causes and poor repeatability.
The accompanying drawing explanation
Fig. 1 is shown as the schematic diagram of measurement mechanism of foundation pit enclosure structure layering horizontal shift of the present utility model and the schematic diagram that adopts the measuring method of this measurement mechanism.
Fig. 2 is shown as the local enlarged diagram of the measurement mechanism of foundation pit enclosure structure layering horizontal shift of the present utility model.
Embodiment
Below by specific instantiation, embodiment of the present utility model is described, those skilled in the art can understand other advantages of the present utility model and effect easily by the disclosed content of this instructions.The utility model can also be implemented or be applied by other different embodiment, and the every details in this instructions also can be based on different viewpoints and application, carries out various modifications or change not deviating under spirit of the present utility model.
Refer to accompanying drawing.It should be noted that, the diagram provided in the present embodiment only illustrates basic conception of the present utility model in a schematic way, satisfy in graphic and only show with assembly relevant in the utility model but not component count, shape and size drafting while implementing according to reality, during its actual enforcement, kenel, quantity and the ratio of each assembly can be a kind of random change, and its assembly layout kenel also may be more complicated.
Figure 1 shows that the schematic diagram of the measurement mechanism that the utility model provides, this measurement mechanism is for measuring foundation pit enclosure structure layering horizontal shift.As shown in Figure 1, foundation pit enclosure structure 4 comprises that the first building enclosure 41(Fig. 1 that is arranged in foundation ditch 1 both sides shows the building enclosure be arranged in left side) and second building enclosure 42(Fig. 1 demonstration be positioned at the building enclosure on right side), the first building enclosure 41 and the second building enclosure 42 include collar tie beam 411 and enclosure wall 412.This measurement mechanism comprises a relative displacement measurement mechanism 21 and an absolute displacement measuring apparatus 22.
Relative displacement measurement mechanism 21 comprises the first alignment device 211, the first laser range sensor 212 and a plurality of displacement reflecting piece 213.The first alignment device 211 is fixedly mounted on the side of the first building enclosure 41, and the first laser range sensor 212 is arranged on the first alignment device 211, and each displacement reflecting piece 213 is arranged on the second building enclosure 42.
Absolute displacement measuring apparatus 22 comprises the second alignment device 221, the second laser range sensor 222 and a benchmark reflecting piece 223.The second alignment device 221 is fixedly mounted on the end face of the first building enclosure 41, and the second laser range sensor 222 is arranged on the second alignment device 221, and benchmark reflecting piece 223 is fixedly installed on reference point 31 places of the first building enclosure 41 1 sides.Reference point 31 to second laser range sensors 222 be more than or equal to 5 times of foundation ditch 1 cutting depth h, i.e. l >=5h apart from l.
Fig. 2 is shown as the local enlarged diagram of the measurement mechanism of foundation pit enclosure structure layering horizontal shift of the present utility model, as shown in Figure 2, the first alignment device 211 and the second alignment device 221 include a pedestal 23, be provided with a ball-and-socket 231 in pedestal 23, ball-and-socket 231 forms sphere with a bulb rotor 232 and coordinates, bulb rotor 232 is fixedly connected with the second laser range sensor 222 with the first laser range sensor 212, between ball-and-socket 231 and bulb rotor 232, is provided with locking device 24.In embodiment, locking device 24 is for to be installed in the lock-screw 241 on pedestal 23, and the head 2411 of lock-screw 241 exposes to pedestal 23, and the afterbody 2412 of lock-screw 241 stretches in ball-and-socket 231.
Be fixed with screw 2321 on bulb rotor 232, the first laser range sensor 212 and the second laser range sensor 222 are provided with the threaded hole 2121 coordinated with screw 2321, by the first laser range sensor 212, the second laser range sensor 222 being linked together with bulb rotor 232 screw 2321 and coordinating of threaded hole 2121.The first alignment device 211 is fixedly mounted on by the first setscrew 214 on the side of the first building enclosure 41 collar tie beams 411, and the second alignment device 221 is fixedly mounted on the end face of the first building enclosure 41 collar tie beams 411 by the second setscrew 224.The end of the first setscrew 214 and the second setscrew 224 all has screw thread 25, and screw thread 25 length are fixed, and just in time with the threaded hole 233 of pedestal 23 1 ends, coordinates, and makes alignment device can be fixedly secured to same position at every turn, has guaranteed higher alignment precision.
When measuring foundation pit enclosure structure layering horizontal shift, determine what a fixed reference point 31 in a side of the first building enclosure 41 on request, arrange benchmark reflecting piece 223 at these reference point 31 places, the second alignment device 221 that is connected with the second laser range sensor 222 is installed on the second setscrew 224, the Installation Elevation of the elevation of benchmark reflecting piece 223 and the second alignment device 221 is basically identical, forms absolute displacement measuring apparatus 22.Using the installation place of the second laser range sensor 222 as benchmark measuring point 32.
Relative with the first setscrew 214, a displacement measuring points 341 is determined in collar tie beam 411 sides in the second building enclosure 42, install a displacement reflecting piece 213, the first alignment device 211 that is connected with the first laser range sensor 212 is installed on the first setscrew 214, using the installation place of the first laser range sensor 212 as working base point 33, form relative displacement measurement mechanism 21.
The laser survey line that the reflective surface of displacement reflecting piece 213 or benchmark reflecting piece 223 is all tried one's best and launched perpendicular to the first laser range sensor 212 or the second laser range sensor 222.Can adjust arbitrarily the angle of the first laser range sensor 212 or the second laser range sensor 222 Laser emission by roating sphere head rotor 232, realize the accurate alignment of survey line between measuring point.After laser emission point being sighted to the central authorities of displacement reflecting piece 213 or benchmark reflecting piece 223, the head 2411 of rotational lock screw 241, make the afterbody 2412 of lock-screw 241 be deep into ball-and-socket 231 inside and hold out against bulb rotor 232, thereby lock the first laser range sensor 212 or the second laser range sensor 222, the fixed laser emission angle.Contact owing to forming point between ball-and-socket 231 and bulb rotor 232, effectively solved after the installation of conventional laser distance measuring sensor problems such as contacting the measurement result poor stability that causes and poor repeatability due to surveying instrument with face between stationary installation.
All be connected with external triggering line and external trigger button on the first laser range sensor 212 and the second laser range sensor 222, can eliminate the measuring error that the flip flop equipment of direct contact type causes when button.When laser spots is sighted benchmark reflecting piece 223 or displacement reflecting piece 213 central, press external trigger button and record reading.The first laser range sensor 212 and 222 pairs of measurement results of the second laser range sensor have numbering memory function and clock timing function, and enough internal memories are arranged, and data-interface can be by the data importing computer, and data resolution is 0.1mm.
Fig. 1 also is shown as and adopts above-mentioned measurement mechanism to carry out the schematic diagram of the measuring method of foundation pit enclosure structure horizontal shift measurement.
Arrive the distance value l of reference point 31 according to survey frequency measuring basis measuring point 32 with the second laser range sensor 222
j, according to survey frequency, each measured value l
jwith first measured value l
0difference be the abswolute level shift value Δ l of benchmark measuring point 32
j, Δ l
j=| l
j-l
0|, wherein j means to measure number of times, j=0,1,2 ...In embodiment, survey frequency is for once a day.
Excavation along with foundation ditch 1 each layer, install successively displacement reflecting piece 213 on corresponding each layer of the second building enclosure 42, using displacement reflecting piece 213 installation places as displacement measuring points 34, arrive the distance value l of each displacement measuring points 34 with the first laser range sensor 212 according to survey frequency and excavation number of plies difference surveying work basic point 33
ij, wherein, i means to excavate the number of plies.The measured value l at every turn obtained
ijwith first measured value l
i0difference DELTA l
ij=| l
ij-l
i0| when being projected as on horizontal line excavated to the i layer, displacement measuring points 34 is to the relative level shift value δ of working base point 33
ij.
During the ground floor 11 of excavation pit 1, displacement measuring points 341 is arranged on grit 411 inboards of the second building enclosure 42, relative with the first setscrew 214 of the first building enclosure 41 grit 411 sides, adjustment is connected to the bulb rotor 232 on the first laser range sensor 212, make laser emission point sight displacement reflecting piece 213, record the distance value of displacement measuring points 341 to working base point 33.Collar tie beam can be thought the rigid body do not deformed, and therefore each measured value is a definite value l
1.
Excavation is to the second layer 12, the 3rd layer 13 successively ... the time, lay displacement reflecting piece 213 in the inboard relevant position of the enclosure wall 412 of the second building enclosure 42, form displacement measuring points 342,343 ...As shown in Figure 1,
h
ithe degree of depth for excavation foundation ditch 1 during to the i layer.The θ of i layer during due to each the measurement
ivariable quantity is very little, can think δ
ij=Δ l
ijsin θ
i.
Each displacement measuring points 34 is to the relative level shift value δ of working base point 33
ijabswolute level shift value Δ l with benchmark measuring point 32
jdifference be the abswolute level displacement S of the displacement measuring points 34 of i layer
ij, S
ij=| δ
ij-Δ l
j|.
For example, excavation to the 3rd layer 13 o'clock, each the 3rd layer of 13 displacement measuring points of measuring 343 is to the relative level shift value δ of working base point 33
3j=Δ l
3jsin θ
3,
Δ l
3j=| l
3j-l
30|.The abswolute level displacement S of the 3rd layer of 13 displacement measuring points 343
3j=| δ
3j-Δ l
j|.
The first laser range sensor 212 and the second laser range sensor 222 are identical laser range sensors, therefore in an embodiment, the first laser range sensor 212 and the second laser range sensor 222 can exchange, and are measuring the distance value l of benchmark measuring point 32 to reference point 31 with the second laser range sensor 222
jafter, the second laser range sensor 222 is pulled down from the second alignment device 221, then be installed on the first alignment device 211, the distance value l for surveying work basic point 33 to each displacement measuring points 34
ij.In whole measuring process, only use a laser range sensor also can complete measurement.
In sum, the utility model has effectively overcome various shortcoming of the prior art and the tool high industrial utilization.
Above-described embodiment is illustrative principle of the present utility model and effect thereof only, but not for limiting the utility model.Any person skilled in the art scholar all can, under spirit of the present utility model and category, be modified or be changed above-described embodiment.Therefore, have in technical field under such as and usually know that the knowledgeable modifies or changes not breaking away from all equivalences that complete under spirit that the utility model discloses and technological thought, must be contained by claim of the present utility model.
Claims (7)
1. the measurement mechanism of a foundation pit enclosure structure layering horizontal shift, described foundation pit enclosure structure (4) comprises the first building enclosure (41) and the second building enclosure (42) that is positioned at foundation ditch (1) both sides, described first, the second building enclosure (41, 42) include collar tie beam (411) and enclosure wall (412), it is characterized in that: described measurement mechanism comprises a relative displacement measurement mechanism (21) and an absolute displacement measuring apparatus (22), described relative displacement measurement mechanism (21) comprises the first alignment device (211) be fixedly mounted on the first building enclosure (41) side, be arranged on the first laser range sensor (212) on described the first alignment device (211) and be arranged on the displacement reflecting piece (213) on the second building enclosure (42), described absolute displacement measuring apparatus (22) comprises the second alignment device (221) be fixedly mounted on the first building enclosure (41) end face, be arranged on the second laser range sensor (222) and a benchmark reflecting piece (223) on the second alignment device (221), benchmark reflecting piece (223) is fixedly installed on the reference point (31) of described the first building enclosure (41) one sides and locates, described first, the second alignment device (211, 221) include a pedestal (23), be provided with a ball-and-socket (231) in pedestal (23), ball-and-socket (231) coordinates with bulb rotor (a 232) sphere, bulb rotor (232) and described first, the second laser range sensor (212, 222) be fixedly connected with, also be provided with locking device (24) between described ball-and-socket (231) and described bulb rotor (232).
2. the measurement mechanism of foundation pit enclosure structure layering horizontal shift according to claim 1, it is characterized in that: be fixed with screw (2321) on bulb rotor (232), be connected by described screw (2321) between described first, second laser range sensor (212,222) and described bulb rotor (232).
3. the measurement mechanism of foundation pit enclosure structure layering horizontal shift according to claim 1, it is characterized in that: described locking device (24) is for being installed in the lock-screw (241) on described pedestal (23), the head (2411) of described lock-screw (241) exposes to described pedestal (23), and the afterbody of described lock-screw (2412) stretches in described ball-and-socket (231).
4. the measurement mechanism of foundation pit enclosure structure layering horizontal shift according to claim 1 is characterized in that: described the first alignment device (211) is fixedly mounted on by the first setscrew (214) on the side of collar tie beam (411) of described the first building enclosure (41); Described the second alignment device (221) is fixedly mounted on by the second setscrew (224) on the end face of collar tie beam (411) of described the first building enclosure (41).
5. the measurement mechanism of foundation pit enclosure structure layering horizontal shift according to claim 4, it is characterized in that: the end of described first, second setscrew (214,224) all has screw thread (25), and described screw thread (25) has regular length.
6. the measurement mechanism of foundation pit enclosure structure layering horizontal shift according to claim 1, it is characterized in that: described first, second laser range sensor all is connected with external triggering line and external trigger button on (212,222).
7. the measurement mechanism of foundation pit enclosure structure layering horizontal shift according to claim 1 is characterized in that: described reference point (31) is more than or equal to 5 times of described foundation ditch (1) cutting depth to the distance of described the second laser range sensor (222).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320373786.2U CN203375934U (en) | 2013-06-26 | 2013-06-26 | Foundation pit enclosure structure stratification horizontal displacement measurement device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320373786.2U CN203375934U (en) | 2013-06-26 | 2013-06-26 | Foundation pit enclosure structure stratification horizontal displacement measurement device |
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| Publication Number | Publication Date |
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| CN203375934U true CN203375934U (en) | 2014-01-01 |
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| CN201320373786.2U Withdrawn - After Issue CN203375934U (en) | 2013-06-26 | 2013-06-26 | Foundation pit enclosure structure stratification horizontal displacement measurement device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103363904A (en) * | 2013-06-26 | 2013-10-23 | 同济大学 | Measuring device and measuring method for layering horizontal displacement of base pit enclosing structure |
| CN105606066A (en) * | 2016-03-12 | 2016-05-25 | 中国水利水电第七工程局有限公司 | Foundation pit supporting structure deep level displacement monitoring system and method |
| CN105839681A (en) * | 2016-05-13 | 2016-08-10 | 绍兴文理学院 | Method for monitoring axial force of foundation pit steel support by means of laser distance measuring sensor |
-
2013
- 2013-06-26 CN CN201320373786.2U patent/CN203375934U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103363904A (en) * | 2013-06-26 | 2013-10-23 | 同济大学 | Measuring device and measuring method for layering horizontal displacement of base pit enclosing structure |
| CN103363904B (en) * | 2013-06-26 | 2015-12-16 | 同济大学 | The measurement mechanism of foundation pit enclosure structure layering horizontal shift and measuring method |
| CN105606066A (en) * | 2016-03-12 | 2016-05-25 | 中国水利水电第七工程局有限公司 | Foundation pit supporting structure deep level displacement monitoring system and method |
| CN105839681A (en) * | 2016-05-13 | 2016-08-10 | 绍兴文理学院 | Method for monitoring axial force of foundation pit steel support by means of laser distance measuring sensor |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140101 Effective date of abandoning: 20151216 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |