CN220288937U - Middle-span and small-span bridge static deflection and beam end rotation angle measurement system based on symmetrical photoelectric imaging displacement measurement sensor - Google Patents
Middle-span and small-span bridge static deflection and beam end rotation angle measurement system based on symmetrical photoelectric imaging displacement measurement sensor Download PDFInfo
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Abstract
The utility model discloses a system for measuring static deflection and beam end rotation angle of a middle-span and small-span bridge based on symmetrical photoelectric imaging displacement measurement sensors, which comprises three groups of symmetrical photoelectric imaging displacement measurement sensors, wherein two adjacent groups of symmetrical photoelectric imaging displacement measurement sensors are arranged in the system: the second sensor, the first sensor and the third sensor of the first group of symmetrical photoelectric imaging displacement measurement sensors are sequentially arranged at measuring points S1, S2 and S3 of the bridge from left to right; the second sensor, the first sensor and the third sensor of the second group of symmetrical photoelectric imaging displacement measurement sensors are sequentially arranged at measuring points S2, S3 and S4 of the bridge from left to right; the second sensor, the first sensor and the third sensor of the third group of symmetrical photoelectric imaging displacement measuring sensors are sequentially arranged at measuring points S3, S4 and S5 of the bridge from left to right. Deflection of three measuring points on the bridge deck and beam end rotation angle can be measured, and meanwhile, multifunctional, high-precision measurement and convenient installation are realized.
Description
Technical Field
The utility model belongs to the field of bridge engineering detection and bridge health monitoring, and relates to a system for measuring static and dynamic deflection and beam end rotation angle of a middle-and-small span bridge based on a symmetrical photoelectric imaging displacement measurement sensor.
Background
The high-precision measurement of the deflection of the middle-span and small-span bridge is an important content in the works of highway bridge construction completion acceptance, bridge load test, bridge operation management and the like. For small-span bridges in railways, not only deflection is measured, but also the rotation angle of the bridge end is measured. This is because, with the increase of railway transportation density and train traction weight and the increase of train running speed, the running speed of the high-speed railway train has exceeded 300km/h or more, and in order to ensure the running safety of the railway train when passing through the bridge and the safe running of the bridge itself, the comfort level of the passenger train is ensured, and in the railway running maintenance management, the deflection of the railway bridge and the vertical rotation angle of the beam end must be strictly controlled.
The existing measuring technology for the deflection and the corner of the bridge beam end of the middle-span and small-span bridge has some problems and defects. Bridge deflection detection is carried out by using instruments such as a level gauge and a total station, only static deflection of the bridge can be detected, dynamic deflection of the bridge cannot be detected, detection efficiency is low, and normal traffic is usually closed in the detection process. When the photoelectric deflection meter based on optical imaging is used for bridge deflection detection, as a single imaging system is used for deflection measurement of a plurality of positions of the bridge, the measurement accuracy is related to the imaging distance, the measurement accuracy is obviously reduced along with the increase of the imaging distance, and the current photoelectric deflection meter cannot be used for bridge beam end corner measurement, so that the photoelectric deflection meter needs to be arranged on a stable platform in use, and great inconvenience is brought to bridge deflection measurement. The bridge deflection measurement is carried out by adopting an electronic, mechanical, photoelectric displacement meter and a displacement sensor, and a bracket for installing the sensor is required to be erected at the lower part of the bridge, so that the bridge deflection on-site measurement operation is complicated, and the bridge deflection measuring device can not be particularly used for detecting the large-span bridge deflection of rivers, lakes and seas and high piers. And an accelerometer, an inclinometer, a gyroscope and other inertial sensors are adopted to measure the bridge deflection, so that the bridge deflection measurement precision is low. The bridge beam end rotation angle measurement is carried out by means of the inclinometer, and the bridge beam end rotation angle measurement precision is low due to the limitation of the measurement precision of the inclination angle sensor. Bridge deflection detection is carried out based on the GSS positioning system, the deflection precision is low, and the method cannot be directly used for measuring the beam end corner. The bridge deflection detection is carried out by adopting a laser scanner, a microwave interferometer and the like, the field use is limited by geographical positions, the bridge deflection detection needs to be installed on the banks of the rivers, and the bridge beam end corner measurement cannot be carried out. The bridge deflection detection and measurement system formed by the liquid communicating pipe sensor can only be used for detecting the static deflection or quasi-static deflection of the vertical one-dimensional bridge and cannot be directly used for measuring the beam end rotation angle.
Disclosure of Invention
The embodiment of the utility model aims to provide a small and medium span bridge static deflection and beam end rotation angle measuring system based on a symmetrical photoelectric imaging displacement measuring sensor, so as to solve the problems that the traditional small and medium span bridge deflection measuring system cannot realize multifunctional, high-precision measurement and convenient installation at the same time and cannot measure bridge deflection and bridge beam end rotation angle at the same time.
The first technical scheme adopted by the embodiment of the utility model is as follows: the middle-span and small-span bridge static deflection measuring system based on the symmetrical photoelectric imaging displacement measuring sensors comprises three groups of symmetrical photoelectric imaging displacement measuring sensors;
in two adjacent groups of symmetrical photoelectric imaging displacement measurement sensors:
the second sensor, the first sensor and the third sensor of the first group of symmetrical photoelectric imaging displacement measurement sensors are sequentially and correspondingly arranged on the measuring point S on the bridge surface at the upper part of the bridge from left to right 1 、S 2 、S 3 A place;
the second sensor, the first sensor and the third sensor of the second group of symmetrical photoelectric imaging displacement measurement sensors are sequentially and correspondingly arranged on the measuring point S on the bridge surface at the upper part of the bridge from left to right 2 、S 3 、S 4 A place;
the second sensor, the first sensor and the third sensor of the third group of symmetrical photoelectric imaging displacement measurement sensors are sequentially and correspondingly arranged on the measuring point S on the bridge surface at the upper part of the bridge from left to right 3 、S 4 、S 5 Where it is located.
Further, each group of symmetrical photo-imaging displacement measurement sensors comprises:
the first sensor comprises a symmetrical optical imaging system, the symmetrical optical imaging system comprises a right optical imaging system and a left optical imaging system, the right optical imaging system images an object on the right side along the direction of principal rays of the right optical imaging system, and the left optical imaging system images an object on the left side along the direction of principal rays of the left optical imaging system;
the second sensor is positioned at the left side of the first sensor, the second sensor comprises a right luminous light source, the left optical imaging system of the first sensor corresponds to the right luminous light source of the second sensor, and the right luminous light source of the second sensor is imaged;
the third sensor is positioned on the right side of the first sensor, the third sensor comprises a left luminous light source, the right optical imaging system of the first sensor corresponds to the left luminous light source of the third sensor, and the left luminous light source of the third sensor is imaged.
Further, the first sensor, the second sensor and the third sensor of each group of symmetrical photoelectric imaging displacement measuring sensors are respectively arranged on the corresponding multifunctional base;
Each multifunctional base has the functions of adjusting the heights and the orientations of the first sensor, the second sensor and the third sensor on the multifunctional base;
each multifunctional base is provided with a height measurement sensor, an inclination angle sensor, a distance measurement sensor and a data acquisition processor;
the output ends of the height measuring sensor, the inclination sensor and the ranging sensor on the multifunctional base where the left optical imaging system of the first sensor of each group of symmetrical photoelectric imaging displacement measuring sensors is positioned are electrically connected with different input ends of the corresponding data acquisition processor;
the output ends of the height measuring sensor, the inclination sensor and the ranging sensor on the multifunctional base where the right optical imaging system of the first sensor of each group of symmetrical photoelectric imaging displacement measuring sensors is positioned are electrically connected with different input ends of the corresponding data acquisition processor.
Further, the second sensor of the second group of symmetrical photoelectric imaging displacement measuring sensors corresponds to the center of the first sensor of the first group of symmetrical photoelectric imaging displacement measuring sensors vertically and is arranged on the same multifunctional base;
the centers of the third sensor of the first group of symmetrical photoelectric imaging displacement measurement sensors and the first sensor of the second group of symmetrical photoelectric imaging displacement measurement sensors vertically correspond to the centers of the second sensor of the third group of symmetrical photoelectric imaging displacement measurement sensors and are arranged on the same multifunctional base;
The centers of the third sensor of the second group of symmetrical photoelectric imaging displacement measurement sensors and the first sensor of the third group of symmetrical photoelectric imaging displacement measurement sensors are vertically and correspondingly arranged on the same multifunctional base.
The second technical scheme adopted by the embodiment of the utility model is as follows: the middle-span bridge static deflection and beam end rotation angle measuring system based on the symmetrical photoelectric imaging displacement measuring sensor comprises the following components:
measuring point S 1 The measuring point S is positioned on the bridge deck at the upper part of the left bridge pier 5 The measuring point S is positioned on the bridge deck at the upper part of the right bridge pier 2 、S 3 、S 4 The bridge surface is positioned on the bridge deck of the corresponding bridge deflection measuring point;
the system for measuring static deflection and beam end rotation angle of the middle-span and small-span bridge based on the symmetrical photoelectric imaging displacement measurement sensor further comprises:
the left beam end rotation angle measuring sensor comprises a left luminous light source and a right optical imaging system; the right optical imaging system of the left beam end rotation angle measurement sensor is arranged at a measuring point S 1 The left light-emitting source of the left beam end rotation angle measuring sensor is arranged at the measuring point S 2 The right optical imaging system of the left beam end rotation angle measuring sensor images the left luminous light source of the left beam end rotation angle measuring sensor along the direction of the principal ray of the right optical imaging system, and a measuring point S is carried out 1 The corner of the left beam end of the bridge is measured;
the right beam end rotation angle measuring sensor comprises a right light source and a left optical imaging system, and the left optical imaging system of the right beam end rotation angle measuring sensor is arranged at a measuring point S 5 The right light-emitting source of the right beam end rotation angle measuring sensor is arranged at the measuring point S 4 The left optical imaging system of the right beam end rotation angle measuring sensor images the right luminous light source of the right beam end rotation angle measuring sensor along the direction of the principal ray of the left optical imaging system, and a measuring point S is carried out 5 And (3) measuring the corner of the right beam end of the bridge.
Further, the system for measuring static deflection and beam end rotation angle of the middle-span and small-span bridge based on the symmetrical photoelectric imaging displacement measurement sensor further comprises:
the left pier settlement measuring sensor comprises a right light-emitting source and a left optical imaging system; right light-emitting source of left pier settlement measurement sensor is arranged on left side bridge of bridgeRelatively stable measuring point S outside pier L At the measuring point S of the left optical imaging system of the left pier settlement measuring sensor arranged on the left pier 1 A place; the left optical imaging system of the left pier settlement measuring sensor corresponds to the right light-emitting light source of the left optical imaging system, images the right light-emitting light source of the left optical imaging system, and performs settlement measurement of the left pier;
the right pier settlement measurement sensor comprises a left luminous light source and a right optical imaging system; the left luminous light source of the right pier settlement measurement sensor is arranged at a relatively stable measuring point S outside the right pier of the bridge R At the position, a right optical imaging system of the right pier settlement measurement sensor is arranged at a measuring point S on the right pier 5 A place; the right optical imaging system of the right pier settlement measurement sensor corresponds to the left light-emitting light source of the right optical imaging system, and the left light-emitting light source of the right optical imaging system is imaged to perform settlement measurement of the right pier.
Further, a left optical imaging system of the left bridge pier settlement measuring sensor and a right optical imaging system of the left beam end rotation angle measuring sensor are arranged on a multifunctional base where a second sensor of the first group of symmetrical photoelectric imaging displacement measuring sensors is located;
the left beam end rotation angle measuring sensor is characterized in that a left luminous light source is arranged on a multifunctional base where a first sensor of a first group of symmetrical photoelectric imaging displacement measuring sensors is positioned;
The right optical imaging system of the right pier settlement measurement sensor and the left optical imaging system of the right beam end rotation angle measurement sensor are arranged on a multifunctional base where a third sensor of a third group of symmetrical photoelectric imaging displacement measurement sensors is located;
the right light-emitting source of the right beam end rotation angle measuring sensor is arranged on a multifunctional base where the first sensor of the third group of symmetrical photoelectric imaging displacement measuring sensors is located.
The embodiment of the utility model has the beneficial effects that:
(1) The measuring functions are as follows: three groups of symmetrical photoelectric imaging displacement measurement sensors are distributed at 1/4, 2/4 and 3/4 deflection measuring points on the bridge deck, so that high-precision measurement of deflection of the 1/4, 2/4 and 3/4 measuring points of the bridge is realized; arranging left and right beam end corner measuring sensors at bridge pier positions at two ends of a bridge and on the bridge deck, so as to realize high-precision measurement of the beam end corners; the settlement measuring sensors of the left bridge pier and the right bridge pier are arranged on the relatively stable measuring points outside the bridge piers at the two ends of the bridge, so that the settlement of the bridge piers at the two ends of the bridge can be measured; by means of a two-dimensional area array chip of a photoelectric receiver of the optical imaging system, not only the vertical static deflection and the beam end corner of the bridge can be measured, but also the transverse displacement of the bridge can be measured; meanwhile, by means of the height measurement sensor positioned at each measuring point, the initial line shape of the bridge deck can be obtained;
(2) The measurement accuracy is high: the high-resolution photoelectric chip and the high-resolution lens in the symmetrical photoelectric imaging displacement measurement sensor can realize high-resolution and high-speed sampling, can be used for high-precision measurement of bridge static and dynamic deflection, can reach more than 0.01mm in measurement precision, and can meet the requirements of different measurement precision of bridge deflection;
(3) The use and operation are simple: according to the embodiment of the utility model, the static dynamic deflection and the beam end rotation angle measuring system of the middle-small span bridge based on the symmetrical photoelectric imaging displacement measuring sensor can be directly arranged on the bridge deck of the bridge to measure the deflection and the beam end rotation angle of the bridge;
in summary, the system for measuring the static deflection and the beam end rotation angle of the middle and small span bridge based on the symmetrical photoelectric imaging displacement measurement sensor provided by the embodiment of the utility model simultaneously realizes multifunctional, high-precision measurement and convenient installation, can measure the deflection of three measuring points of the bridge and the beam end rotation angle of the bridge, has a relatively high application prospect, and solves the problems that the traditional system for measuring the deflection of the middle and small span bridge cannot realize multifunctional, high-precision measurement and convenient installation at the same time and cannot measure the deflection and the beam end rotation angle of the bridge at the same time.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic top view of a first construction of a symmetrical photo-imaging displacement measurement sensor.
Fig. 2 is a schematic top view of a second structure of a symmetrical photo-imaging displacement measurement sensor.
Fig. 3 is a schematic top view of a third construction of a symmetrical photo-imaging displacement measurement sensor.
Fig. 4 is a schematic diagram of the installation and layout of the multifunctional base.
Fig. 5 is a measurement schematic diagram of a symmetrical photo-electric imaging displacement measurement sensor.
Fig. 6 is a schematic diagram of initial linear measurement of a bridge of a small and medium span bridge static deflection measurement system based on a symmetrical photoelectric imaging displacement measurement sensor.
Fig. 7 is a schematic diagram of linear measurement after bridge deformation of a small and medium span bridge static and dynamic deflection measurement system based on a symmetrical photoelectric imaging displacement measurement sensor.
Fig. 8 is a schematic diagram of the principle of measuring the height of the bridge deck from the first group of symmetrical photo-electric imaging displacement measuring sensors in the initial stage.
Fig. 9 is a schematic diagram of a principle of measuring the height of the first group of symmetrical photoelectric imaging displacement measuring sensors from the bridge deck after the bridge is deformed.
Fig. 10 is a schematic diagram of bridge deformation post-line shape and beam end rotation angle measurement of a small and medium span bridge static deflection and beam end rotation angle measurement system based on a symmetrical photoelectric imaging displacement measurement sensor.
Fig. 11 is an enlarged left side view of fig. 10.
Fig. 12 is an enlarged right side view of fig. 10.
In the figure, 1 part of symmetrical light emitting source, 1-1 part of right light emitting source, 1-2 part of left light emitting source, 2 part of symmetrical optical imaging system, 2-1 part of right optical imaging system, 2-2 part of left optical imaging system, 3 part of multifunctional base, 4 part of tripod, 5 part of bridge deck, 20-1 part of first group of symmetrical photoelectric imaging displacement measuring sensors, 20-1 part of left beam end rotation angle measuring sensors, 20-2 part of second group of symmetrical photoelectric imaging displacement measuring sensors, 20-3 part of third group of symmetrical photoelectric imaging displacement measuring sensors, 20-3-1 part of right beam end rotation angle measuring sensors, 21 part of bridge beam end connecting line, 22 part of bridge deck initial line shape and 23 part of bridge deck deformed line shape.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
The present embodiment provides a symmetrical photo-electric imaging displacement measurement sensor, as shown in fig. 1 to 3, including:
a first sensor including a symmetrical optical imaging system 2, the symmetrical optical imaging system 2 including a right optical imaging system 2-1 and a left optical imaging system 2-2 which are axisymmetric or centrosymmetric, the right optical imaging system 2-1 imaging an object on the right side in a direction of a principal ray thereof, the left optical imaging system 2-2 imaging an object on the left side in a direction of a principal ray thereof; the chief rays of the left optical imaging system 2-2 and the right optical imaging system 2-1 of the first sensor are coaxial or parallel;
the second sensor is positioned at the left side of the first sensor, the second sensor comprises a right luminous light source 1-1, the right luminous light source 1-1 emits directional light beams to the right, a left optical imaging system 2-2 of the first sensor corresponds to the right luminous light source 1-1 of the second sensor, and the right luminous light source 1-1 of the second sensor is imaged;
The third sensor is positioned on the right side of the first sensor, the third sensor comprises a left luminous light source 1-2, the left luminous light source 1-2 emits directional light beams leftwards, the right optical imaging system 2-1 of the first sensor corresponds to the left luminous light source 1-2 of the third sensor, and the left luminous light source 1-2 of the third sensor is imaged.
In some embodiments, the first sensor, the second sensor and the third sensor of the symmetrical photoelectric imaging displacement measurement sensor are respectively installed on the corresponding multifunctional bases 3, each multifunctional base 3 is installed on a tripod 4, and the tripod 4 is installed on a bridge deck 5;
the multifunctional base 3 has the functions of adjusting the height and the azimuth of the first sensor, the second sensor and the third sensor, and the multifunctional base 3 is provided with a height measuring sensor, an inclination angle sensor, a distance measuring sensor and a data acquisition processor; the height measurement sensor is used for measuring the initial height of the multifunctional base 3 from the bridge deck 5, the inclination sensor is used for measuring the inclination angle of the multifunctional base 3 and the horizontal plane, and the measurement errors caused by the inclination of the first sensor, the second sensor and the third sensor are corrected; the ranging sensor is used for measuring the horizontal distance between the current measuring point and the adjacent measuring point;
The output ends of the height measuring sensor, the inclination angle sensor and the ranging sensor on the left optical imaging system 2-2 of the first sensor of the symmetrical photoelectric imaging displacement measuring sensor and the multifunctional base 3 where the left optical imaging system 2-2 is positioned are electrically connected with different input ends of the corresponding data acquisition processor, and the data acquisition processor calculates the relative displacement between the first sensor of the symmetrical photoelectric imaging displacement measuring sensor and the second sensor of the symmetrical photoelectric imaging displacement measuring sensor according to the measured data of the height measuring sensor, the inclination angle sensor and the ranging sensor on the left optical imaging system 2-2 of the first sensor of the symmetrical photoelectric imaging displacement measuring sensor and the multifunctional base 3 where the left optical imaging system 2-2 is positioned;
the output ends of the height measuring sensor, the inclination sensor and the ranging sensor on the right optical imaging system 2-1 of the first sensor of the symmetrical photoelectric imaging displacement measuring sensor and the multifunctional base 3 where the right optical imaging system 2-1 is positioned are electrically connected with different input ends of the corresponding data acquisition processor, and the data acquisition processor calculates the relative displacement between the second sensor of the symmetrical photoelectric imaging displacement measuring sensor and the second sensor of the symmetrical photoelectric imaging displacement measuring sensor according to the measured data of the height measuring sensor, the inclination sensor and the ranging sensor on the right optical imaging system 2-1 of the second sensor of the symmetrical photoelectric imaging displacement measuring sensor and the multifunctional base 3 where the right optical imaging system 2-1 is positioned.
In some embodiments, the right optical imaging system 2-1 and the left optical imaging system 2-2 adopt two-dimensional area array chips, so that vertical and horizontal displacement measurement can be realized.
Example 2
The embodiment provides a small and medium span bridge static deflection measuring system based on symmetrical photoelectric imaging displacement measuring sensors, which is shown in fig. 6 and comprises three groups of symmetrical photoelectric imaging displacement measuring sensors;
in two adjacent groups of symmetrical photoelectric imaging displacement measurement sensors:
the second sensor, the first sensor and the third sensor of the first group of symmetrical photoelectric imaging displacement measurement sensors 20-1 are sequentially and correspondingly arranged on the measuring point S on the bridge surface 5 at the upper part of the bridge from left to right 1 、S 2 、S 3 A place;
the second sensor, the first sensor and the third sensor of the second group of symmetrical photoelectric imaging displacement measurement sensors 20-2 are sequentially and correspondingly arranged on the measuring point S on the bridge surface 5 at the upper part of the bridge from left to right 2 、S 3 、S 4 A place;
the second sensor, the first sensor and the third sensor of the third group of symmetrical photoelectric imaging displacement measurement sensors 20-3 are sequentially and correspondingly arranged on the measuring point S on the bridge surface 5 at the upper part of the bridge from left to right 3 、S 4 、S 5 A place;
and the beam static and dynamic deflection measurement is realized by a static and dynamic deflection measurement system of the middle-span and small-span bridge, which is composed of the three groups of symmetrical photoelectric imaging displacement measurement sensors.
In some embodiments, the second sensor of the second set of symmetrical photo imaging displacement measurement sensors 20-2 vertically corresponds to the center of the first sensor of the first set of symmetrical photo imaging displacement measurement sensors 20-1;
the third sensor of the first set of symmetrical photo-electric imaging displacement measurement sensors 20-1 vertically corresponds to the center of the first sensor of the second set of symmetrical photo-electric imaging displacement measurement sensors 20-2.
In some embodiments, the first sensor of the second set of symmetrical photo-imaging displacement measurement sensors 20-2 vertically corresponds to the center of the second sensor of the third set of symmetrical photo-imaging displacement measurement sensors 20-3;
the third sensor of the second set of symmetrical photo-electric imaging displacement measurement sensors 20-2 vertically corresponds to the center of the first sensor of the third set of symmetrical photo-electric imaging displacement measurement sensors 20-3.
In some embodiments, at station S 2 The first sensor of the first set of symmetrical photo imaging displacement measurement sensors 20-1 and the second sensor of the second set of symmetrical photo imaging displacement measurement sensors 20-2 are mounted on the same multifunctional base 3.
In some embodiments, at station S 3 The third sensor of the first set of symmetrical photo imaging displacement measurement sensors 20-1, the first sensor of the second set of symmetrical photo imaging displacement measurement sensors 20-2, and the second sensor of the third set of symmetrical photo imaging displacement measurement sensors 20-3 are mounted on the same multifunctional base 3.
In some embodiments, at station S 4 The third sensor of the second set of symmetrical photo-imaging displacement measurement sensors 20-2 and the first sensor of the third set of symmetrical photo-imaging displacement measurement sensors 20-3 are mounted on the same multifunctional base 3.
Example 3
The embodiment provides a system for measuring static deflection and beam end rotation angle of a middle-span and small-span bridge based on a symmetrical photoelectric imaging displacement measurement sensor, as shown in fig. 10, including the system for measuring static deflection of a middle-span and small-span bridge based on a symmetrical photoelectric imaging displacement measurement sensor described in embodiment 2, wherein a measuring point S 1 The measuring point S is positioned on the bridge deck 5 at the upper part of the left bridge pier 5 The measuring point S is positioned on the bridge deck 5 at the upper part of the right bridge pier 2 、S 3 、S 4 The bridge deck 5 is positioned at the corresponding bridge deflection measuring point;
the system for measuring static deflection and beam end rotation angle of the middle-span and small-span bridge based on the symmetrical photoelectric imaging displacement measurement sensor further comprises:
left beam end rotation angle measuring sensor 20-1-1, left beam end rotation angle measuring sensor 20-1-1 includes a left light emitting source 1-2 and a right optical imaging system 2-1; the right optical imaging system 2-1 of the left beam end rotation angle measuring sensor 20-1-1 is arranged at a measuring point S 1 The left light-emitting source 1-2 of the left beam end rotation angle measuring sensor 20-1-1 is arranged at the measuring point S 2 A place; the right optical imaging system 2-1 of the left beam end rotation angle measuring sensor 20-1-1 images the left luminescent light source 1-2 of the left beam end rotation angle measuring sensor 20-1-1 along the direction of the principal ray of the right optical imaging system, so as to realize a measuring point S 1 The corner of the left beam end of the bridge is measured;
the right beam end rotation angle measuring sensor 20-3-1, the right beam end rotation angle measuring sensor 20-3-1 comprises a right luminous light source 1-1 and a left optical imaging system 2-2; the left optical imaging system 2-2 of the right beam end rotation angle measuring sensor 20-3-1 is arranged at a measuring point S 5 The right light-emitting source 1-1 of the right beam end rotation angle measuring sensor 20-3-1 is arranged at the measuring point S 4 A place; the left optical imaging system 2-2 of the right beam end rotation angle measuring sensor 20-3-1 images the right light emitting source 1-1 of the right beam end rotation angle measuring sensor 20-3-1 along the direction of the principal ray of the left optical imaging system, so as to realize a measuring point S 5 And (3) measuring the corner of the right beam end of the bridge.
In some embodiments, the right optical imaging system 2-1 of the left beam-end rotation angle measurement sensor 20-1-1 is disposed on the multifunctional base 3 on which the second sensor of the first group of symmetrical photo-electric imaging displacement measurement sensors 20-1 is disposed, and the left light-emitting source 1-2 of the left beam-end rotation angle measurement sensor 20-1-1 is disposed on the multifunctional base 3 on which the first sensor of the first group of symmetrical photo-electric imaging displacement measurement sensors 20-1 is disposed;
The left optical imaging system 2-2 of the right beam end rotation angle measuring sensor 20-3-1 is arranged on the multifunctional base 3 where the third sensor of the third group of symmetrical photoelectric imaging displacement measuring sensors 20-3 is located, and the right light emitting source 1-1 of the right beam end rotation angle measuring sensor 20-3-1 is arranged on the multifunctional base 3 where the first sensor of the third group of symmetrical photoelectric imaging displacement measuring sensors 20-3 is located;
when measuring point S 2 When the first sensor of the first group of symmetrical photoelectric imaging displacement measuring sensors 20-1 and the second sensor of the second group of symmetrical photoelectric imaging displacement measuring sensors 20-2 are arranged on the same multifunctional base 3, the rotation angle of the left beam end is measuredThe left light-emitting source 1-2 of the sensor 20-1-1 and the right light-emitting source 1-1 of the second sensor of the second group of symmetrical photo-imaging displacement measurement sensors 20-2 form a symmetrical light-emitting source 1, as shown in fig. 4;
when measuring point S 4 When the third sensor of the second set of symmetrical photo-electric imaging displacement measuring sensors 20-2 and the first sensor of the third set of symmetrical photo-electric imaging displacement measuring sensors 20-3 are mounted on the same multifunctional base 3, the right light-emitting light source 1-1 of the right beam end rotation angle measuring sensor 20-3-1 and the left light-emitting light source 1-2 of the third sensor of the second set of symmetrical photo-electric imaging displacement measuring sensors 20-2 form a symmetrical light-emitting light source 1, as shown in fig. 4.
In some embodiments, the system for measuring static deflection and beam end rotation angle of a middle-span and small-span bridge based on the symmetrical photoelectric imaging displacement measurement sensor further comprises:
the left pier settlement measuring sensor comprises a right luminous light source 1-1 and a left optical imaging system 2-2; the right light-emitting source 1-1 of the left pier settlement measurement sensor is arranged at a relatively stable measuring point S outside the left pier of the bridge L At the position, a left optical imaging system 2-2 of a left pier settlement measurement sensor is arranged at a measuring point S on the left pier 1 Where, measuring point S L And measuring point S 1 Is L L The method comprises the steps of carrying out a first treatment on the surface of the The left optical imaging system 2-2 of the left pier settlement measuring sensor corresponds to the right light-emitting light source 1-1 thereof, and images the right light-emitting light source 1-1 thereof to perform settlement measurement of the left pier;
the right pier settlement measurement sensor comprises a left luminous light source 1-2 and a right optical imaging system 2-1; the left light-emitting source 1-2 of the right pier settlement measurement sensor is arranged at a relatively stable measuring point S outside the right pier of the bridge R At the position, a right optical imaging system 2-1 of a right pier settlement measurement sensor is arranged at a measuring point S on the right pier 5 Where, measuring point S R And measuring point S 5 Is L R The method comprises the steps of carrying out a first treatment on the surface of the The right optical imaging system 2-1 of the right pier settlement measuring sensor corresponds to the left light-emitting light source 1-2, and images the left light-emitting light source 1-2 to perform settlement of the right pierAnd (5) measuring the drop.
In some embodiments, the left optical imaging system 2-2 of the left pier settlement measurement sensor is disposed on the multifunctional base 3 on which the second sensor of the first group of symmetrical photoelectric imaging displacement measurement sensors 20-1 is disposed;
the right optical imaging system 2-1 of the right pier settlement measurement sensor is arranged on the multifunctional base 3 where the third sensor of the third group of symmetrical photoelectric imaging displacement measurement sensors 20-3 is located.
Example 4
The embodiment provides a method for measuring static deflection and beam end rotation angle of a middle-span and small-span bridge based on a symmetrical photoelectric imaging displacement measurement sensor, which comprises the following steps:
step 1, arranging the system for measuring static and dynamic deflection and beam end rotation angle of a middle-span and small-span bridge based on the symmetrical photoelectric imaging displacement measurement sensor in the embodiment 3 on the bridge;
step 2, calculating bridge deflection through measurement data of a small and medium span bridge static deflection and beam end rotation angle measurement system based on a symmetrical photoelectric imaging displacement measurement sensor, wherein the concrete process is as follows:
Step 21, measuring the measuring point S 1 、S 2 、S 3 、S 4 、S 5 The corresponding bridge floor position is initially set at the coordinate y in the coordinate system O-XY 1 0 、y 2 0 、y 3 0 、y 4 0 、y 5 0 The initial line shape 22 of the bridge deck is obtained by the following steps:
l as shown in FIGS. 5 to 6 1 For measuring point S 1 、S 2 Distance between L 2 For measuring point S 2 、S 3 Distance between L 3 For measuring point S 3 、S 4 Distance between L 4 For measuring point S 4 、S 5 A distance therebetween; c (C) 1 C 1 ' at the measurement point S for the first group of symmetrical photo-electric imaging displacement measurement sensors 20-1 1 、S 2 、S 3 C is the measurement standard of (2) 2 C 2 ' is a second group of symmetrical photo-imaging displacement measurement sensors 20-2 in-process measurementPoint S 2 、S 3 、S 4 C is the measurement standard of (2) 3 C 3 ' at the measurement point S for the third group of symmetrical photoelectric imaging displacement measurement sensors 20-3 3 、S 4 、S 5 Is a measurement reference of (a); based on measurement reference C 1 C 1 ' the initial height h of the center of the right light-emitting source 1-1 of the second sensor of the first group of symmetrical photoelectric imaging displacement measuring sensors 20-1, the center of the symmetrical optical imaging system 2 of the first sensor and the center of the left light-emitting source 1-2 of the third sensor from the bridge deck 5 is measured 1 10 、h 2 10 、h 3 10 The method comprises the steps of carrying out a first treatment on the surface of the Based on measurement reference C 2 C 2 ' the initial height h of the center of the right light-emitting source 1-1 of the second sensor of the second group of symmetrical photoelectric imaging displacement measuring sensors 20-2, the center of the symmetrical optical imaging system 2 of the first sensor, and the center of the left light-emitting source 1-2 of the third sensor from the bridge deck 5 is measured 1 20 、h 2 20 、h 3 20 The method comprises the steps of carrying out a first treatment on the surface of the Based on measurement reference C 3 C 3 ' the initial height h of the center of the right light-emitting source 1-1 of the second sensor, the center of the symmetrical optical imaging system 2 of the first sensor, and the center of the left light-emitting source 1-2 of the third sensor from the bridge deck 5 of the third group of symmetrical photoelectric imaging displacement measurement sensors 20-3 is measured 1 30 、h 2 30 、h 3 30 The method comprises the steps of carrying out a first treatment on the surface of the The following ratio is obtained:
((h 3 10 +y 3 0 )-(h 1 10 +y 1 0 ))/(L 1 +L 2 )＝((h 2 10 +y 2 0 )-(h 1 10 +y 1 0 ))/L 1 ；
((h 3 20 +y 4 0 )-(h 1 20 +y 2 0 ))/(L 2 +L 3 )＝((h 2 20 +y 3 0 )-(h 1 20 +y 2 0 ))/L 2 ；
((h 3 30 +y 5 0 )-(h 1 30 +y 3 0 ))/(L 3 +L 4 )＝((h 2 30 +y 4 0 )-(h 1 30 +y 3 0 ))/L 3 ；
and then obtain:
y 3 0 ＝((L 1 +L 2 )y 2 0 -L 2 y 1 0 +(L 1 +L 2 )h 2 10 -L 2 h 1 10 -L 1 h 3 10 )/L 1 ；
y 4 0 ＝((L 2 +L 3 )y 3 0 -L 3 y 2 0 +(L 2 +L 3 )h 2 20 -L 3 h 1 20 -L 2 h 3 20 )/L 2 ；
y 5 0 ＝((L 3 +L 4 )y 4 0 -L 4 y 3 0 +(L 3 +L 4 )h 2 30 -L 4 h 1 30 -L 3 h 3 30 )/L 3 ；
as shown in fig. 6, y 1 0 、y 5 0 To construct the coordinate system O-XY, X coordinate axis and measuring point S 1 、S 5 When X coordinate axis in the coordinate system O-XY crosses bridge end bridge pier connecting line 21 which is bridge end connecting line of bridge, y 1 0 ＝0、y 5 0 ＝0；
Then, h 1 10 、h 2 10 、h 3 10 、h 1 20 、h 2 20 、h 3 20 、h 1 30 、h 2 30 、h 3 30 、y 1 0 、y 5 0 Carry over into the above y 3 0 、y 4 0 、y 5 0 Is solved to obtain the calculation formula of (2)To y 2 0 、y 3 0 、y 4 0 From this, the measurement point S can be obtained 1 、S 2 、S 3 、S 4 、S 5 Initial coordinates of the corresponding deck location: y is 1 0 、y 2 0 、y 3 0 、y 4 0 、y 5 0 And then an initial line shape 22 of the bridge deck is obtained, as shown in fig. 5;
step 22, measuring the measuring point S 1 、S 2 、S 3 、S 4 、S 5 The corresponding bridge floor position is the coordinate y in the coordinate system O-XY after bridge deformation 1 、y 2 、y 3 、y 4 、y 5 The line shape 23 after bridge deck deformation is obtained, as shown in fig. 7, and the specific process is as follows:
based on measurement reference C 1 C 1 ' the height h from the center of the right light-emitting light source 1-1 of the second sensor of the first group of symmetrical photoelectric imaging displacement measurement sensors 20-1 and the center of the left light-emitting light source 1-2 of the third sensor to the bridge deck 5 after bridge deformation is measured by the symmetrical optical imaging system 2 of the first sensor of the first group of symmetrical photoelectric imaging displacement measurement sensors 20-1 1 1 、h 3 1 The method comprises the steps of carrying out a first treatment on the surface of the Based on measurement reference C 2 C 2 ' the height h from the center of the right light-emitting light source 1-1 of the second sensor of the second group of symmetrical photoelectric imaging displacement measurement sensors 20-2 and the center of the left light-emitting light source 1-2 of the third sensor to the bridge deck 5 after bridge deformation is measured by the symmetrical optical imaging system 2 of the first sensor of the second group of symmetrical photoelectric imaging displacement measurement sensors 20-2 1 2 、h 3 2 The method comprises the steps of carrying out a first treatment on the surface of the Based on measurement reference C 3 C 3 ' the height h from the center of the right light-emitting light source 1-1 of the second sensor of the third group of symmetrical photoelectric imaging displacement measurement sensors 20-3 and the center of the left light-emitting light source 1-2 of the third sensor to the bridge deck 5 after bridge deformation is measured by the symmetrical optical imaging system 2 of the first sensor of the third group of symmetrical photoelectric imaging displacement measurement sensors 20-3 1 3 、h 3 3 The method comprises the steps of carrying out a first treatment on the surface of the The following ratio is obtained:
((h 3 1 +y 3 )-(h 1 1 +y 1 ))/(L 1 +L 2 )＝((h 2 1 +y 2 )-(h 1 1 +y 1 ))/L 1 ；
((h 3 2 +y 4 )-(h 1 2 +y 2 ))/(L 2 +L 3 )＝((h 2 2 +y 3 )-(h 1 2 +y 2 ))/L 2 ；
((h 3 3 +y 5 )-(h 1 3 +y 3 ))/(L 3 +L 4 )＝((h 2 3 +y 4 )-(h 1 3 +y 3 ))/L 3 ；
and then obtain:
y 3 ＝((L 1 +L 2 )y 2 -L 2 y 1 +(L 1 +L 2 )h 2 1 -L 2 h 1 1 -L 1 h 3 1 )/L 1 ；
y 4 ＝((L 2 +L 3 )y 3 -L 3 y 2 +(L 2 +L 3 )h 2 2 -L 3 h 1 2 -L 2 h 3 2 )/L 2 ；
y 5 ＝((L 3 +L 4 )y 4 -L 4 y 3 +(L 3 +L 4 )h 2 3 -L 4 h 1 3 -L 3 h 3 3 )/L 3 ；
wherein h is 2 1 The height h of the center of the symmetrical optical imaging system 2 of the first sensor of the first group of symmetrical photoelectric imaging displacement measuring sensors 20-1 from the bridge deck 5 after bridge deformation 2 2 The height, h, of the center of the symmetrical optical imaging system 2 of the first sensor of the second group of symmetrical photo-electric imaging displacement measuring sensors 20-2 from the bridge deck 5 after bridge deformation 2 3 The height, h, of the center of the symmetrical optical imaging system 2 of the first sensor of the third group of symmetrical photo-electric imaging displacement measuring sensors 20-3 from the bridge deck 5 after bridge deformation 2 1 ＝h 2 10 ，h 2 2 ＝h 2 20 ，h 2 3 ＝h 2 30 ；y 1 、y 5 X coordinate axis of coordinate system O-XY and measuring point S 1 、S 5 Y when X coordinate axis in the coordinate system O-XY passes through the bridge beam end connecting line 21 1 ＝0、y 5 ＝0；
Then, h 1 1 、h 2 1 、h 3 1 、h 1 2 、h 2 2 、h 3 2 、h 1 3 、h 2 3 、h 3 3 、y 1 、y 5 Carry over into the above y 3 、y 4 、y 5 Solving the calculation formula of (2) to obtain y 2 、y 3 、y 4 From this, the measurement point S can be obtained 1 、S 2 、S 3 、S 4 、S 5 Dynamic coordinates of the corresponding bridge deck line change: y is 1 、y 2 、y 3 、y 4 、y 5 Further obtaining a deformed line shape 23 of the bridge deck;
step 23, based on the measuring point S 1 、S 2 、S 3 、S 4 、S 5 Coordinate y in coordinate system O-XY after bridge deformation 1 、y 2 、y 3 、y 4 、y 5 And measuring point S 1 、S 2 、S 3 、S 4 、S 5 Initial coordinate y of corresponding bridge deck position in coordinate system O-XY 1 0 、y 2 0 、y 3 0 、y 4 0 、y 5 0 The measurement point S is calculated according to the following 1 、S 2 、S 3 、S 4 、S 5 Corresponding bridge deflection deltay 1 、Δy 2 、Δy 3 、Δy 4 、Δy 5 ：
Δy 1 ＝y 1 -y 1 0 ；
Δy 2 ＝y 2 -y 2 0 ；
Δy 3 ＝y 3 -y 3 0 ；
Δy 4 ＝y 4 -y 4 0 ；
Δy 5 ＝y 5 -y 5 0 ；
When X coordinate axis in the coordinate system O-XY passes through the bridge beam end connecting line 21, delta y 1 ＝0、Δy 5 ＝0。
The bridge beam end rotation angle measurement is carried out through the following processes:
as shown in fig. 10 to 12, the left light source 1-2 is imaged by the right optical imaging system 2-1 of the left beam end rotation angle measuring sensor 20-1-1, and delta is measured 1-2 The method can obtain:
Δ 1-2 ＝δ 1-2 +Δy 2 ；
wherein delta is 1-2 The optical axis of the right optical imaging system 2-1 imaging the left light source 1-2 of the left beam end rotation angle measuring sensor 20-1-1 is due to the measuring point S 1 Is the rotation angle theta of (2) 1 At the measuring point S 2 A displacement value caused by the position; delta 1-2 The method comprises the following steps: measuring point S after bridge deformation 2 A distance between the coordinates of the left beam end rotation angle measuring sensor 20-1 and the optical axis of the left light emitting source 1-2 imaged by the right optical imaging system 2-1;
Thereby obtaining the upper measuring point S of the bridge pier at the left side of the bridge 1 The corner of the left beam end of the bridge is the corner theta 1 ：
θ 1 ＝tg -1 (Δ 1-2 /S 1 )；
The right light-emitting source 1-1 is imaged by the left optical imaging system 2-2 of the right beam end rotation angle measuring sensor 20-3-1, and delta is measured 4-5 The method can obtain:
Δ 5-4 ＝δ 5-4 +Δy 4 ；
wherein delta is 5-4 The right beam end rotation angle measuring sensor 20-3-1 emits right light to the right beam end rotation angleThe optical axis of the left optical imaging system 2-2 imaged by the source 1-1 is due to the measuring point S 5 Is the rotation angle theta of (2) 5 At the measuring point S 4 A displacement value caused by the position; delta 5-4 The method comprises the following steps: measuring point S after bridge deformation 4 A distance between the coordinates of the right beam end and the optical axis of the left optical imaging system 2-2 of the right beam end rotation angle measuring sensor 20-3-1 imaging the right light emitting source 1-1 thereof;
thereby obtaining the upper measuring point S of the bridge pier on the right side of the bridge 5 Is the corner of the right beam end of the bridge 5 ：
θ 5 ＝tg -1 (Δ 5-4 /S 4 )。
In some embodiments, as shown in FIG. 8, h 1 10 、h 2 10 、h 3 10 The corresponding steps are as follows: the right light-emitting source 1-1 of the second sensor of the first group of symmetrical photoelectric imaging displacement measurement sensors 20-1, the symmetrical optical imaging system 2 of the first sensor and the height H of the upper mounting surface of the multifunctional base 3 where the left light-emitting source 1-2 of the third sensor is positioned from the bridge deck 5 C1 10 、H C2 10 、H C3 10 The center of the right light-emitting source 1-1 of the second sensor of the first group of symmetrical photoelectric imaging displacement measurement sensors 20-1, the center of the symmetrical optical imaging system 2 of the first sensor and the height H of the upper mounting surface of the multifunctional base 3 corresponding to the center distance of the left light-emitting source 1-2 of the third sensor G1 10 、H G2 10 、H G3 10 These two correspond to the added integrated value; similarly, h 1 20 、h 2 20 、h 3 20 The method comprises the following steps of: the right light-emitting source 1-1 of the second sensor of the second group of symmetrical photoelectric imaging displacement measurement sensors 20-2, the symmetrical optical imaging system 2 of the first sensor, and the height H of the upper mounting surface of the multifunctional base 3 where the left light-emitting source 1-2 of the third sensor is located from the bridge deck 5 C1 10 、H C2 10 、H C3 10 The center of the right light-emitting source 1-1 of the second sensor of the second group of symmetrical photoelectric imaging displacement measuring sensors 20-2, the center of the symmetrical optical imaging system 2 of the first sensor, and the third sensorHeight H of upper mounting surface of multifunctional base 3 corresponding to center distance of left luminous source 1-2 of sensor G1 10 、H G2 10 、H G3 10 These two correspond to the added integrated value; h is a 1 30 、h 2 30 、h 3 30 The method comprises the following steps of: the right light-emitting source 1-1 of the second sensor of the third group of symmetrical photoelectric imaging displacement measurement sensors 20-3, the symmetrical optical imaging system 2 of the first sensor, and the height H of the upper mounting surface of the multifunctional base 3 where the left light-emitting source 1-2 of the third sensor is located from the bridge deck 5 C1 10 、H C2 10 、H C3 10 The center of the right light-emitting source 1-1 of the second sensor, the center of the symmetrical optical imaging system 2 of the first sensor and the center of the left light-emitting source 1-2 of the third sensor of the third group of symmetrical photoelectric imaging displacement measuring sensors 20-3 are at a height H from the upper mounting surface of the multifunctional base 3 corresponding to the center distance G1 10 、H G2 10 、H G3 10 The two correspond to the added integrated value, and the measurement accuracy is ensured.
In some embodiments, as shown in FIG. 9, h 1 1 The method comprises the following steps: initial height h of the center of the right light source 1-1 of the second sensor of the first group of symmetrical photo-electric imaging displacement measuring sensors 20-1 from the deck 5 1 10 Height change delta H of center of right light-emitting source 1-1 of second sensor of left optical imaging system 2-2 of first sensor of first group of symmetrical photoelectric imaging displacement measurement sensor 20-1 after bridge deformation G1 1 The two are combined into a poor value; h is a 3 1 The method comprises the following steps: the initial height h of the center of the left light source 1-2 of the third sensor of the first group of symmetrical photo-electric imaging displacement measuring sensors 20-1 from the bridge floor 5 3 10 Height change delta H of center of left light-emitting light source 1-2 of third sensor of right optical imaging system 2-1 of first sensor of first group of symmetrical photoelectric imaging displacement measurement sensor 20-1 after bridge deformation G3 1 The two are combined into a poor value;
similarly, h 1 2 The method comprises the following steps: second pair of pairsThe initial height h of the center of the right light-emitting source 1-1 of the second sensor called the photo-electric imaging displacement measuring sensor 20-2 from the bridge deck 5 1 20 The left optical imaging system 2-2 of the first sensor of the second group of symmetrical photoelectric imaging displacement measurement sensors 20-2 after bridge deformation obtains the height change delta H of the center of the right light emitting source 1-1 of the second sensor thereof G1 2 The two are combined into a poor value; h is a 3 2 The method comprises the following steps: the initial height h of the center of the left light source 1-2 of the third sensor of the second group of symmetrical photo-electric imaging displacement measuring sensors 20-2 from the bridge floor 5 3 20 Height change delta H of center of left light-emitting light source 1-2 of third sensor of right optical imaging system 2-1 of first sensor of second group of symmetrical photoelectric imaging displacement measurement sensor 20-2 after bridge deformation G3 2 The two are combined into a poor value;
similarly, h 1 3 The method comprises the following steps: initial height h of the center of the right light source 1-1 of the second sensor of the third group of symmetrical photo-electric imaging displacement measuring sensors 20-3 from the bridge floor 5 1 30 The left optical imaging system 2-2 of the first sensor of the third group of symmetrical photo-electric imaging displacement measuring sensors 20-3 obtains the height change Δh of the center of the right light emitting source 1-1 of the second sensor thereof G1 3 The two are combined into a poor value; h is a 3 3 The method comprises the following steps: the initial height h of the center of the left light-emitting source 1-2 of the third sensor of the third group of symmetrical photo-electric imaging displacement measuring sensors 20-3 from the bridge floor 5 3 30 The right optical imaging system 2-1 of the first sensor of the third group of symmetrical photo-electric imaging displacement measuring sensors 20-3 obtains the height change Δh of the center of the left light emitting light source 1-2 of its third sensor G3 3 The two are combined to a poor value.
In some embodiments, when station S 1 、S 2 、S 3 、S 4 、S 5 Are uniformly distributed among L 1 ＝L 2 ＝L 3 ＝L 4 The dynamic line shape of the bridge with three measuring points of 1/4, 2/4 and 3/4 can be obtained, and the dynamic line shape is calculated as follows:
y 3 ＝2y 2 -y 1 +(2h 2 1 -h 1 1 -h 3 1 )；
y 4 ＝2y 3 -y 2 +(2h 2 2 -h 1 2 -h 3 2 )；
y 5 ＝2y 4 -y 3 +(2h 2 3 -h 1 3 -h 3 3 )。
the foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model are included in the protection scope of the present utility model.
Claims (7)
1. The middle-span and small-span bridge static deflection measuring system based on the symmetrical photoelectric imaging displacement measuring sensors is characterized by comprising three groups of symmetrical photoelectric imaging displacement measuring sensors;
in two adjacent groups of symmetrical photoelectric imaging displacement measurement sensors:
the second sensor, the first sensor and the third sensor of the first group of symmetrical photoelectric imaging displacement measurement sensors (20-1) are sequentially and correspondingly arranged on the measuring point S on the bridge surface (5) at the upper part of the bridge from left to right 1 、S 2 、S 3 A place;
the second sensor, the first sensor and the third sensor of the second group of symmetrical photoelectric imaging displacement measuring sensors (20-2) are sequentially and correspondingly arranged on the measuring point S on the bridge surface (5) at the upper part of the bridge from left to right 2 、S 3 、S 4 A place;
the second sensor, the first sensor and the third sensor of the third group of symmetrical photoelectric imaging displacement measuring sensors (20-3) are sequentially and correspondingly arranged on the measuring point S on the bridge surface (5) at the upper part of the bridge from left to right 3 、S 4 、S 5 Where it is located.
2. The symmetrical photo-imaging displacement measurement sensor-based mid-span bridge static deflection measurement system of claim 1, wherein each set of symmetrical photo-imaging displacement measurement sensors comprises:
the system comprises a first sensor, wherein the first sensor comprises a symmetrical optical imaging system (2), the symmetrical optical imaging system (2) comprises a right optical imaging system (2-1) and a left optical imaging system (2-2), the right optical imaging system (2-1) images an object on the right side along the direction of principal rays of the right optical imaging system, and the left optical imaging system (2-2) images an object on the left side along the direction of principal rays of the left optical imaging system;
the second sensor is positioned at the left side of the first sensor, the second sensor comprises a right luminous light source (1-1), the left optical imaging system (2-2) of the first sensor corresponds to the right luminous light source (1-1) of the second sensor, and the right luminous light source (1-1) of the second sensor is imaged;
the third sensor is positioned on the right side of the first sensor, the third sensor comprises a left luminous light source (1-2), the right optical imaging system (2-1) of the first sensor corresponds to the left luminous light source (1-2) of the third sensor, and the left luminous light source (1-2) of the third sensor is imaged.
3. The middle-span and small-span bridge static deflection measuring system based on the symmetrical photoelectric imaging displacement measuring sensor according to claim 2, wherein the first sensor, the second sensor and the third sensor of each group of the symmetrical photoelectric imaging displacement measuring sensors are respectively arranged on the corresponding multifunctional base (3);
each multifunctional base (3) has the functions of adjusting the heights and the orientations of the first sensor, the second sensor and the third sensor on the multifunctional base;
each multifunctional base (3) is provided with a height measurement sensor, an inclination angle sensor, a distance measurement sensor and a data acquisition processor;
the output ends of the height measurement sensor, the inclination sensor and the ranging sensor on the multifunctional base (3) where the left optical imaging system (2-2) of the first sensor of each group of symmetrical photoelectric imaging displacement measurement sensors is positioned are electrically connected with different input ends of the corresponding data acquisition processor;
the right optical imaging system (2-1) of the first sensor of each group of symmetrical photoelectric imaging displacement measuring sensors and the output ends of the height measuring sensor, the inclination angle sensor and the distance measuring sensor on the multifunctional base (3) where the right optical imaging system is positioned are electrically connected with different input ends of the corresponding data acquisition processor.
4. A mid-span bridge static deflection measurement system based on a symmetrical photo-electric imaging displacement measurement sensor according to any one of claims 1-3, characterized in that the second sensor of the second set of symmetrical photo-electric imaging displacement measurement sensors (20-2) corresponds vertically to the centre of the first sensor of the first set of symmetrical photo-electric imaging displacement measurement sensors (20-1) and is mounted on the same multifunctional base (3);
the centers of a third sensor of the first group of symmetrical photoelectric imaging displacement measurement sensors (20-1) and a first sensor of the second group of symmetrical photoelectric imaging displacement measurement sensors (20-2) vertically correspond to the centers of a second sensor of the third group of symmetrical photoelectric imaging displacement measurement sensors (20-3) and are arranged on the same multifunctional base (3);
the centers of the third sensor of the second group of symmetrical photoelectric imaging displacement measuring sensors (20-2) and the first sensor of the third group of symmetrical photoelectric imaging displacement measuring sensors (20-3) are vertically and correspondingly arranged on the same multifunctional base (3).
5. The system for measuring static deflection and beam end rotation angle of a middle-span bridge based on a symmetrical photoelectric imaging displacement measurement sensor is characterized by comprising the system for measuring static deflection of a middle-span bridge based on the symmetrical photoelectric imaging displacement measurement sensor, wherein:
Measuring point S 1 The measuring point S is positioned on the bridge deck (5) at the upper part of the left bridge pier 5 The measuring point S is positioned on the bridge deck (5) at the upper part of the right bridge pier 2 、S 3 、S 4 The bridge surface (5) is positioned at the corresponding bridge deflection measuring point;
the system for measuring static deflection and beam end rotation angle of the middle-span and small-span bridge based on the symmetrical photoelectric imaging displacement measurement sensor further comprises:
a left beam end rotation angle measuring sensor (20-1-1), wherein the left beam end rotation angle measuring sensor (20-1-1) comprises a left luminous light source (1-2) and a right optical imaging system (2-1); the right optical imaging system (2-1) of the left beam end rotation angle measuring sensor (20-1-1) is arranged at the measuring point S 1 The left light-emitting source (1-2) of the left beam end rotation angle measuring sensor (20-1-1) is arranged at the measuring point S 2 The right optical imaging system (2-1) of the left beam end rotation angle measuring sensor (20-1-1) images the left luminous light source (1-2) of the left beam end rotation angle measuring sensor (20-1-1) along the direction of the principal ray of the right optical imaging system, so as to measure a point S 1 The corner of the left beam end of the bridge is measured;
the right beam end rotation angle measuring sensor (20-3-1), the right beam end rotation angle measuring sensor (20-3-1) comprises a right luminous light source (1-1) and a left optical imaging system (2-2), and the left optical imaging system (2-2) of the right beam end rotation angle measuring sensor (20-3-1) is arranged at a measuring point S 5 The right light source (1-1) of the right beam end rotation angle measuring sensor (20-3-1) is arranged at the measuring point S 4 The left optical imaging system (2-2) of the right beam end rotation angle measuring sensor (20-3-1) images the right light-emitting light source (1-1) of the right beam end rotation angle measuring sensor (20-3-1) along the direction of the principal ray of the left optical imaging system, so as to measure a point S 5 And (3) measuring the corner of the right beam end of the bridge.
6. The symmetrical photoimaging displacement measurement sensor-based small and medium span bridge static deflection and beam-end rotation angle measurement system of claim 5, further comprising:
the left pier settlement measuring sensor comprises a right light-emitting source (1-1) and a left optical imaging system (2-2); the right light-emitting source (1-1) of the left pier settlement measurement sensor is arranged at a relatively stable measuring point S outside the left pier of the bridge L At the position, a left optical imaging system (2-2) of a left pier settlement measurement sensor is arranged at a measuring point S on the left pier 1 A place; the left optical imaging system (2-2) of the left bridge pier settlement measuring sensor corresponds to the right light-emitting light source (1-1) of the left bridge pier settlement measuring sensor, and the right light-emitting light source (1-1) of the left bridge pier settlement measuring sensor corresponds to the right light-emitting light source (1-1)) Imaging, and performing settlement measurement of the left bridge pier;
the device comprises a right pier settlement measurement sensor, a left bridge pier settlement measurement sensor and a right bridge pier settlement measurement sensor, wherein the right bridge pier settlement measurement sensor comprises a left luminous light source (1-2) and a right optical imaging system (2-1); the left light-emitting source (1-2) of the right pier settlement measurement sensor is arranged at a relatively stable measuring point S outside the right pier of the bridge R The right optical imaging system (2-1) of the right pier settlement measurement sensor is arranged at the measuring point S on the right pier 5 A place; the right optical imaging system (2-1) of the right pier settlement measurement sensor corresponds to the left light-emitting light source (1-2), and images the left light-emitting light source (1-2) to perform settlement measurement of the right pier.
7. The symmetrical photoelectric imaging displacement measurement sensor-based mid-span bridge static deflection and beam end rotation angle measurement system according to claim 6, wherein a left optical imaging system (2-2) of a left bridge pier settlement measurement sensor and a right optical imaging system (2-1) of a left beam end rotation angle measurement sensor (20-1-1) are arranged on a multifunctional base (3) where a second sensor of a first group of symmetrical photoelectric imaging displacement measurement sensors (20-1) is located;
the left light-emitting source (1-2) of the left beam end rotation angle measuring sensor (20-1-1) is arranged on the multifunctional base (3) where the first sensor of the first group of symmetrical photoelectric imaging displacement measuring sensors (20-1) is located;
the right optical imaging system (2-1) of the right pier settlement measurement sensor and the left optical imaging system (2-2) of the right beam end rotation angle measurement sensor (20-3-1) are arranged on a multifunctional base (3) where a third sensor of a third group of symmetrical photoelectric imaging displacement measurement sensors (20-3) is positioned;
The right light-emitting source (1-1) of the right beam end rotation angle measuring sensor (20-3-1) is arranged on the multifunctional base (3) where the first sensor of the third group of symmetrical photoelectric imaging displacement measuring sensors (20-3) is located.
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