Building surveying and mapping system

Abstract

The invention discloses a building surveying and mapping system, which relates to the field of building surveying and mapping and comprises a server in communication connection with a data acquisition unit, a support analysis unit, a pile foundation analysis unit, an upper structure unit and an evaluation execution unit. The method comprises the following steps: carrying out bridge template support state judgment analysis processing on template information and support information of a bridge to obtain a bridge support system safety value, carrying out cast-in-place pile construction quality state judgment on cast-in-place pile information to obtain a cast-in-place pile quality value, and carrying out bridge superstructure stress and hanging basket strain judgment analysis on bridge superstructure information. According to the method, a template roughness standard-exceeding area ratio, a bridge support system mounting value, a cast-in-place pile mass value, a beam body stress state value and a hanging basket-shaped abnormal value are obtained, bridge construction quality and safety evaluation is performed on the template roughness standard-exceeding area ratio, the bridge support system mounting value, the cast-in-place pile mass value, the beam body stress state value and the hanging basket-shaped abnormal value, and corresponding execution adjustment operation is executed, so that the bridge construction quality and safety state can be accurately analyzed; and the construction management cost of an enterprise is reduced.

Description

Technical Field

[0001] The invention relates to the field of building surveying and mapping, and in particular to a building surveying and mapping system. Background Art

[0002] Bridges have greatly improved traffic conditions in daily life, facilitated the transportation of materials and personnel, and therefore bridge construction has become increasingly important. Traditional bridge construction surveying and mapping relies too much on manual surveying and mapping, and traditional levels and theodolites can no longer reflect the quality and safety status of the construction process in a timely manner.

[0003] During the construction phase of a bridge, accidents involving construction worker safety and construction quality often occur. Identification of bridge construction quality and safety status is an important way to ensure normal bridge construction. Accurate analysis of bridge construction quality and safety status is extremely important. When operating, traditional construction surveying and mapping systems find it difficult to quickly and accurately identify abnormal bridge construction quality and safety conditions, and it is also difficult to determine and analyze the safety and quality status of bridge construction from multiple levels, which increases the cost of enterprise construction management and makes it difficult to reduce the probability of safety accidents from multiple angles. Summary of the invention

[0004] In order to solve the technical problems raised by the above background technology, the present invention is proposed. An embodiment of the present invention provides a building surveying and mapping system.

[0005] The purpose of the present invention can be achieved through the following technical solutions: A building surveying and mapping system includes a server, and the server is communicatively connected to a data acquisition unit, a support analysis unit, a pile foundation analysis unit, a superstructure unit and an evaluation execution unit.

[0006] The support analysis unit performs bridge template support status determination and analysis processing on the bridge template information and support information, obtains the bridge support system safety value, and sends it to the evaluation execution unit; The pile foundation analysis unit determines the construction quality status of the bored piles based on the bored pile information, obtains the quality value of the bored piles, and sends it to the evaluation execution unit; The superstructure unit performs bridge superstructure stress and basket strain determination analysis on the bridge superstructure information, obtains the beam stress state value and the basket shape abnormality value, and sends them to the evaluation execution unit; The evaluation execution unit conducts a bridge construction quality and safety assessment on the proportion of areas with excessive template roughness, the stability value of the bridge support system, the quality value of the cast-in-place piles, the stress state value of the beam body and the abnormal shape value of the hanging basket, and performs corresponding execution adjustment operations.

[0007] Furthermore, the operation steps of the bridge support system safety value are as follows: The template safety index value ma and the support safety value zjz are weighted and multiplied by the corresponding weight factor coefficient to obtain the bridge support system safety value azz.

[0008] Furthermore, the template safety index value operation steps are as follows: The concrete pouring speed is obtained through the flow sensor, the concrete slump value is obtained through the slump sensor, the admixture correction value, the initial setting time of concrete pouring, and the concrete vibration method is identified. The formwork side pressure estimation cy is calculated by formula, the formwork height and wind speed are obtained, and the formwork overturning coefficient value mq is calculated with the formwork side pressure estimation cy formula. The anti-overturning coefficient value kq of the formwork system and the formwork overturning coefficient value mq are analyzed to obtain the formwork safety index value ma.

[0009] Furthermore, the anti-overturning coefficient value of the template system is operated as follows: Obtain the top view of the bridge pier and the outer diagonal brace of the template, and establish a polar coordinate system, with the center of the pier as the pole and the distance from the center of the diagonal brace to the center of the pier as the distance to the pole. The polar coordinate of the diagonal brace center is (r n ,θ n ), n is the number of the diagonal brace, θ is the angle from the polar axis to the ray connecting the pole and the center point of the diagonal brace, number m is the center point of the diagonal brace (r m ,θ m ) The polar coordinates of the point symmetric about the pole center are (r m ,θ m +π), according to the set formula model , get the distance dj from each coordinate point to the symmetric point of the diagonal brace numbered m n , a1 and a2 are the set weight factor coefficients, and the minimum value of the distance from each coordinate point to the symmetrical point of the diagonal brace numbered m is calculated, recorded as the symmetrical deviation of the symmetrical point of the diagonal brace numbered m, the symmetrical deviation of each symmetrical point of the diagonal brace is calculated in turn and summed up to obtain the symmetrical offset value dc of the diagonal brace, the angle θx between the diagonal brace outside the template and the ground, the number of diagonal braces xs, the distance mj from the diagonal brace to the bottom of the template, the density value dl of the template tension bolt setting, it is normalized with the symmetrical offset value dc of the diagonal brace, according to the set formula The anti-overturning coefficient value kq of the formwork system is calculated, where XO1, XO2, XO3, XO4 and XO5 are the preset weight factors of the angle between the outer diagonal brace of the formwork and the ground, the number of diagonal braces, the distance between the diagonal brace and the bottom of the formwork, the density value of the formwork tension bolts and the symmetrical offset value of the diagonal brace. is the preset correction factor.

[0010] Furthermore, the steps of the bracket installation value operation are as follows: The image of the support rod is obtained by the camera, and the RGB value of the image of the support rod is analyzed and matched with the reference red-brown rust RGB value and black rust RGB value. When the image RGB value of the rod successfully matches the reference value, the area is a rusted area, and the ratio of the area of ​​the rusted area to the total area of ​​the rod is obtained. The alternating current passes through the probe coil to generate an alternating magnetic field around the support rod, and the conductivity, eddy current signal amplitude and phase value of the support rod are obtained. The rust value xs of the support rod is obtained by analysis with the area ratio xb of the rusted area. The curvature of the rod, the step value of the cross bar and the angle between the diagonal brace and the ground are obtained, and the support condition value zjz is obtained by analysis with the rust value xs of the support rod.

[0011] Furthermore, the quality value operation steps of the cast-in-place pile are as follows: Obtain the mud relative density value, mud viscosity value, mud sand content and mud colloid rate in the cast-in-place pile information during bridge construction, and mark them as xm, nd, hs and jl respectively, and normalize them according to the set formula nz=UO4×jl / [UO1×(xm-T3) 2 +UO2×(nd-T4) 2 +UO3×hs], and the mud state value nz is obtained, wherein UO1, UO2, UO3 and UO4 are respectively the set weight factor coefficients of the mud relative density value, mud viscosity value, mud sand content and mud colloid rate, T3 is the set mud reference relative density value, and T4 is the set mud reference sand content; The bottom sediment thickness value and the steel cage state value in the bored pile information during bridge construction are obtained, and then combined with the mud state value, and the quality value gzz of the bored pile is calculated by the formula.

[0012] Furthermore, the steps for operating the beam stress state value and the hanging basket shape abnormal value are as follows: The stress value of the prestressed tendons in the beam of the bridge superstructure during the tensioning and anchoring process is measured by stress sensors, and a rectangular coordinate system is established, with the horizontal axis being the measurement time and the vertical axis being the stress value. A line graph of stress changes in the tensioning and anchoring stages is established, and the slope of each of the two adjacent measured stress lines is calculated. When the slope is less than zero, it is recorded as a descending slope, and the sum is taken to obtain the total descending slope in the tensioning and anchoring stages. When the slope is greater than zero, it is recorded as an ascending slope, and the sum is taken to obtain the total ascending slope in the tensioning and anchoring stages. The stress values ​​at the end of tensioning and the end of anchoring are obtained, and the difference is processed to obtain the anchoring stress loss value. The stress state value lyl of the beam is calculated by the formula; During bridge construction, displacement sensors are set at the four corners of the main truss and bottom basket of the hanging basket to measure the vertical and horizontal displacements of the hanging basket during the construction process of concrete pouring, prestressing and walking of the hanging basket, and compare them with the reference displacements of each stage in the database. When the vertical and horizontal displacements exceed the reference displacements, the time is marked as the abnormal displacement moment, and when the vertical and horizontal displacements are less than the reference displacements, the time is marked as the normal displacement moment. The total duration of abnormal displacement is counted, and the interval time between the normal displacement moment and the next normal displacement moment is counted and summed to obtain the total interval time of normal displacement moments. The total duration of abnormal displacement and the total interval time of normal displacement moments are weighted and multiplied by the corresponding influencing factor coefficient to obtain the hanging basket shape abnormality value gyz.

[0013] Furthermore, the execution corresponding to the adjustment operation steps are as follows: Set the gradient reference intervals G1, G2 and G3 of the bridge quality value, and substitute each bridge quality value into the preset gradient reference intervals G1, G2 and G3 for comparative analysis; When the bridge quality value is within the preset gradient reference interval G1, an abnormal construction quality signal and an alarm signal are generated, and are sent to the set display screen for display in the form of a label one text description; when the bridge quality value is within the preset gradient reference interval G2, a general construction quality signal and an alarm signal are generated, and are sent to the set display screen for display in the form of a label two text description; when the bridge quality value is within the preset gradient reference interval G3, a normal construction quality signal is generated, and are sent to the set display screen for display in the form of a label three text description; Compare and analyze the bridge safety value with the set comparison threshold XX1, and generate a construction safety non-compliance signal and an alarm signal, which are sent to the set display screen in the form of label four text descriptions for display; When the bridge safety value is greater than or equal to the set comparison threshold XX1, a construction safety compliance signal is generated, and an alarm signal is sent to the set display screen for display in the form of label five text description.

[0014] Furthermore, the operation steps of the bridge quality value and the bridge safety value are as follows: By placing an ultrasonic transmitter and a receiver on one side of the construction template of the pier, the construction template of the pier is divided into several areas, the propagation speed of the ultrasonic wave and the round-trip time of the reflected wave at different positions in each area are obtained, and the template surface difference of each area is calculated by the formula. The template surface difference of each area is compared and analyzed with the set reference threshold. When the template surface difference of each area is greater than the set reference threshold, the area corresponds to the template roughness exceeding the standard area. When the template surface difference of each area is less than or equal to the set reference threshold, the area corresponds to the template roughness meeting the standard area. The number of template roughness exceeding the standard area and the ratio of the total number of areas are counted. The quality value of the cast-in-place pile and the stress state value of the beam body are converted into lengths according to a certain ratio, and a rectangle is constructed with the lengths of the quality value of the cast-in-place pile and the stress state value of the beam body as the long and short sides of the rectangle; the proportion of the template roughness exceeding the standard area is converted into lengths according to a certain ratio, and a circle is constructed in the rectangle with the length of the proportion of the template roughness exceeding the standard area as the radius of the circle, wherein the center of the circle coincides with the center of the rectangle, and the non-overlapping area formed by the circle and the rectangle is identified and marked as the quality value of the bridge; The bridge support system condition value and the hanging basket condition value are combined into a formula to calculate the bridge condition value.

[0015] Furthermore, the server connection also has: The data acquisition unit is used to collect the template information, support information, cast-in-place pile information and bridge superstructure information of each bridge, and send it to the support analysis unit, pile foundation analysis unit and superstructure unit respectively through the server.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention determines and analyzes the state of bridge formwork supports on the formwork information and support information of the bridge to obtain the safety value of the bridge support system, determines the construction quality state of the cast-in-place piles on the cast-in-place pile information to obtain the quality value of the cast-in-place piles, and sends it to the evaluation execution unit, determines and analyzes the bridge superstructure stress and hanging basket strain on the bridge superstructure information to obtain the stress state value of the beam body and the hanging basket shape abnormality value, and can determine and analyze the safety and quality state of the bridge construction from the aspects of formwork, support, cast-in-place piles and superstructure information, and accurately analyze the bridge construction quality and safety state.

[0017] 2. The present invention evaluates the bridge construction quality and safety by evaluating the proportion of areas with excessive template roughness, the condition of the bridge support system, the quality of the cast-in-place piles, the stress state of the beam body and the abnormal condition of the hanging basket, and performs corresponding adjustment operations. It can quickly and accurately identify abnormal bridge construction quality and safety conditions, and can remind the construction unit to make rectifications, thereby reducing the cost of enterprise construction management and helping to reduce the probability of safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a system block diagram of the present invention. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings.

[0020] like Figure 1 As shown, a building surveying and mapping system includes a server, and the server is communicatively connected to a data acquisition unit, a support analysis unit, a pile foundation analysis unit, a superstructure unit and an evaluation execution unit.

[0021] The template information, support information, cast-in-place pile information and bridge superstructure information of each bridge are collected through the data acquisition unit, and sent to the support analysis unit, pile foundation analysis unit and superstructure unit respectively through the server.

[0022] When the support analysis unit receives the formwork information and support information of the bridge, it performs bridge formwork support status analysis and processing based on the information to obtain the bridge support system safety value. The specific operation process is as follows: By placing an ultrasonic transmitter and receiver on one side of the pier construction template, the pier construction template is divided into several areas, and the ultrasonic propagation velocity cv and the round-trip time t of the reflected wave at different positions in each area are obtained. i , i represents the number of the pier template position, i=1, 2, 3...c1, c1 is the maximum value of the template position number, according to the formula , calculate the template surface difference mc of each area, where A1 is the mean of the product of the propagation velocity and the reflection time, compare and analyze the template surface difference of each area with the set reference threshold, when the template surface difference of each area is greater than the set reference threshold, the area corresponds to the template roughness exceeding the standard area, when the template surface difference of each area is less than or equal to the set reference threshold, the area corresponds to the template roughness meeting the standard area, and count the ratio of the number of template roughness exceeding the standard area to the total number of areas, marked as czb; Obtain the top view of the bridge pier and the outer diagonal brace of the template, and establish a polar coordinate system, with the center of the pier as the pole and the distance from the center of the diagonal brace to the center of the pier as the distance to the pole. The polar coordinate of the diagonal brace center is (r n ,θ n ), n is the number of the diagonal brace, θ is the angle from the polar axis to the ray connecting the pole and the center point of the diagonal brace, number m is the center point of the diagonal brace (r m ,θ m ) The polar coordinates of the point symmetric about the pole center are (r m ,θ m +π), according to the set formula model , get the distance dj from each coordinate point to the symmetric point of the diagonal brace numbered mn , a1 and a2 are the set weight factor coefficients, and the minimum value of the distance from each coordinate point to the symmetrical point of the diagonal brace numbered m is calculated, recorded as the symmetrical deviation of the symmetrical point of the diagonal brace numbered m, the symmetrical deviation of each symmetrical point of the diagonal brace is calculated in turn and summed up to obtain the symmetrical offset value dc of the diagonal brace, the angle θx between the diagonal brace outside the template and the ground, the number of diagonal braces xs, the distance mj from the diagonal brace to the bottom of the template, the density value dl of the template tension bolt setting, it is normalized with the symmetrical offset value dc of the diagonal brace, according to the set formula The anti-overturning coefficient value kq of the formwork system is calculated, where XO1, XO2, XO3, XO4 and XO5 are the preset weight factors of the angle between the outer diagonal brace of the formwork and the ground, the number of diagonal braces, the distance between the diagonal brace and the bottom of the formwork, the density value of the formwork tension bolts and the symmetrical offset value of the diagonal brace. is the preset correction factor, and its value is 0.185; The concrete pouring speed is obtained through the flow sensor, the concrete slump value is obtained through the slump sensor, the admixture correction value, and the initial setting time of concrete pouring are obtained, and they are marked as js, tl, wx and cn respectively, and the vibration mode of concrete is identified, which is divided into internal vibration and external vibration. According to the set formula , get the template lateral pressure estimate cy, where h1, h2, h3, h4, h5, h6, h7 and h8 are the set reference weight factor coefficients, where h1>h3, h2>h4, h5>h7, h>h8, get the template height and wind speed, marked as gd and fs, and normalize them with the template lateral pressure estimate cy, according to the formula mq=T01×gd+T02×fs+T03×cy, calculate and get the template overturning coefficient value mq, where T01, T02 and T03 are all set weight factor coefficients, and the specific values ​​are determined by personnel in this professional field, the template system's anti-overturning coefficient value kq and the template overturning coefficient value mq, according to the set formula model ma=T04×kq / (T05×mq), get the template safety index value ma, where T04 and T05 are both set weight factor coefficients; It should be noted that the density value of the tension bolts refers to the number of tension bolts set per unit area of ​​the formwork; the admixture correction value refers to the value of 1.2 when a retarder is added, but the value of 1.0 when no admixture is added or other admixtures are added; The image of the support rod is obtained by the camera, and the RGB value of the image of the support rod is analyzed and matched with the reference red-brown rust RGB value and black rust RGB value. The specific reference red-brown rust RGB value range is R: 150-190, G: 30-70, B: 0-40, and the black rust RGB value range is R: 0-40, G: 0-40, B: 0-40. When the image RGB value of the rod successfully matches the reference value, the area is a rusted area, and the ratio of the area of ​​the rusted area to the total area of ​​the rod is obtained, marked as xb. An alternating current is passed through the probe coil to generate an alternating magnetic field around the support rod, and the conductivity, eddy current signal amplitude and phase value of the support rod are obtained, marked as dd, wl and xw respectively, and compared with the area ratio of the rusted area xb, according to the set formula model , the corrosion value xs of the support rod is obtained, where f1, f2, f3 and f4 are the set weight factor coefficients of the conductivity, eddy current signal amplitude, phase value and corrosion area ratio of the support rod, respectively, and λ is the set reference phase value. The curvature of the rod, the step value of the crossbar and the angle between the diagonal brace and the ground are obtained and marked as wq, hb and xj respectively, and the corrosion value xs of the support rod is normalized according to the set formula , get the bracket status value zjz, where j1, j2, j3, j4, j5, j6, j7, j8, j9, j10, j11 and j12 are all set correction factor coefficients, and j1, j2, j3, j4, j5, j6, j7, j8, j9, j10, j11 and j12 are all positive integers, j1>j5>j9, j2>j6>j10, j3>j7>j11, j12>j8>j4, the correction factor coefficient is used to correct the deviation of various parameters in the calculation process of the formula, so as to calculate more accurate parameter data, where T1 is the set reference crossbar step value, T2 is the set reference angle between the diagonal brace and the ground; The template safety index value ma and the support safety value zjz are weighted and multiplied by the corresponding weight factor coefficient to obtain the bridge support system safety value azz; When the pile foundation analysis unit receives the bored pile information, it determines the construction quality status of the bored pile based on it and obtains the quality value of the bored pile. The specific analysis steps are as follows: Obtain the mud value, bottom sediment thickness value, and steel cage state value from the cast-in-place pile information during bridge construction, mark them as nz, kz, and gl, normalize them, and substitute them into the formula Get the quality value gzz of the cast-in-place pile, where m1, m2 and m3 are all preset weight factors; It should be noted that the steel cage state value refers to the weld state value obtained by weighted calculation of the steel cage weld length and weld height and multiplying by the corresponding proportional factor coefficient, and obtaining the deviation distance value between the center point of the steel cage and the center of the designed pile position, and the weld state value is obtained by dividing the deviation distance value; It should also be noted that the steps for solving the muddy value are as follows: Obtain the mud relative density value, mud viscosity value, mud sand content and mud colloid rate in the cast-in-place pile information during bridge construction, and mark them as xm, nd, hs and jl respectively, and normalize them according to the set formula nz=UO4×jl / [UO1×(xm-T3) 2 +UO2×(nd-T4) 2 +UO3×hs], and the mud state value nz is obtained, wherein UO1, UO2, UO3 and UO4 are respectively the set weight factor coefficients of the mud relative density value, mud viscosity value, mud sand content and mud colloid rate, T3 is the set mud reference relative density value, and T4 is the set mud reference sand content; When the superstructure unit receives the superstructure information of the bridge, it performs the stress and basket strain determination analysis of the superstructure of the bridge, and obtains the stress state value of the beam and the basket shape abnormality value. The specific analysis steps are as follows: The stress sensor is used to measure the stress value of the prestressed tendons in the beam body of the bridge superstructure during the tensioning and anchoring process, and a rectangular coordinate system is established with the measurement time on the horizontal axis and the stress value on the vertical axis. A stress change line graph of the tensioning and anchoring stages is established, and the slope of each adjacent two measured stress lines is calculated. When the slope is less than zero, it is recorded as a descending slope, and the sum is performed to obtain the total descending slope of the tensioning and anchoring stages, which are marked as XVr and XVy respectively. When the slope is greater than zero, it is recorded as an ascending slope, and the sum is performed to obtain the total ascending slope of the tensioning and anchoring stages, which are marked as SVr and SVy respectively. The stress values ​​at the end of tensioning and the end of anchoring are obtained, and the difference is processed to obtain the anchoring stress loss value ysz. According to the set formula model , and obtain the stress state value lyl of the beam, where z1, z2, z3, z4, z5 are the set correction factor coefficients, and δ is the set total slope of the reference tension stage; By setting displacement sensors at the four corners of the main truss and bottom basket of the hanging basket during bridge construction, the vertical and horizontal displacements of the hanging basket during the construction process of concrete pouring, prestressing and walking of the hanging basket are measured, and compared with the reference displacements of each stage in the database. When the vertical and horizontal displacements exceed the reference displacements, the time is marked as the abnormal displacement moment, and when the vertical and horizontal displacements are less than the reference displacements, the time is marked as the normal displacement moment. The total duration of abnormal displacement is counted, and the interval time between the normal displacement moment and the next normal displacement moment is counted and summed to obtain the total interval time of normal displacement moments. The total duration of abnormal displacement and the total interval time of normal displacement moments are weighted and multiplied by the corresponding influencing factor coefficient to obtain the hanging basket shape abnormality value gyz; The evaluation execution unit is used to receive the proportion of template roughness exceeding the standard area, the bridge support system status value, the quality value of the cast-in-place pile, the beam stress state value and the hanging basket abnormal value, so as to evaluate the bridge construction quality and safety, and perform corresponding execution adjustment operations, specifically: The quality value of the cast-in-place pile and the stress state value of the beam body are converted into lengths according to a certain ratio, and a rectangle is constructed with the lengths of the quality value of the cast-in-place pile and the stress state value of the beam body as the long and short sides of the rectangle; the proportion of the template roughness exceeding the standard area is converted into lengths according to a certain ratio, and a circle is constructed in the rectangle with the length of the proportion of the template roughness exceeding the standard area as the radius of the circle, wherein the center of the circle coincides with the center of the rectangle, and the non-overlapping area formed by the circle and the rectangle is identified and marked as the quality value of the bridge; Display screens are set up at the entrance of the bridge construction site and the entrance of the project department to display the bridge construction quality and safety status; Set the gradient reference intervals G1, G2 and G3 of the bridge quality value, and substitute each bridge quality value into the preset gradient reference intervals G1, G2 and G3 for comparative analysis, wherein G1, G2 and G3 increase in a gradient; When the bridge quality value is within the preset gradient reference interval G1, an abnormal construction quality signal and an alarm signal are generated, and the signal is sent to the set display screen for display in the form of a text description of "The bridge quality status is abnormal, please immediately set up a quality investigation team to analyze the bridge status". When the bridge quality value is within the preset gradient reference interval G2, a general construction quality signal and an alarm signal are generated, and the signal is sent to the set display screen for display in the form of a text description of "The bridge quality status is general, please ask project management personnel to strengthen on-site management and monitoring". When the bridge quality value is within the preset gradient reference interval G3, a normal construction quality signal is generated, and the signal is sent to the set display screen for display in the form of a text description of "The bridge quality status is normal". The bridge support system condition value azz and the hanging basket abnormal value gyz are normalized, and the bridge condition value qla is obtained according to the set formula qla=p1×azz / (p2×gyz), where p1 and p2 are the set weight factor coefficients of the bridge support system condition value and the hanging basket abnormal value respectively; Compare and analyze the bridge safety value with the set comparison threshold XX1, and generate a construction safety failure signal and an alarm signal, which are sent to the set display screen for display in the form of a text description of "the bridge safety status does not meet the standard, please immediately set up a safety investigation team to analyze the bridge status"; When the bridge safety value is greater than or equal to the set comparison threshold XX1, a construction safety compliance signal is generated, and an alarm signal is sent to the set display screen for display in the form of a text description of "Bridge safety status meets standards".

[0023] The above is an explanation of the present invention and should not be considered as a limitation thereof. Those skilled in the art may make many equivalent modifications to the exemplary embodiments without departing from the novel teachings and advantages of the present invention, and all of these modifications are included within the scope of the present invention defined in the claims.

Claims

1. A building surveying and mapping system, comprising a server, characterized in that: The server communication connections are: The support analysis unit performs bridge formwork support status determination and analysis on the bridge formwork information and support information, obtains the bridge support system safety value, and sends it to the evaluation execution unit; The pile foundation analysis unit determines the construction quality status of the bored piles based on the bored pile information, obtains the quality value of the bored piles, and sends it to the evaluation execution unit; The superstructure unit performs bridge superstructure stress and basket strain determination analysis on the bridge superstructure information, obtains the beam stress state value and basket shape abnormality value, and sends them to the evaluation execution unit; The evaluation execution unit conducts a bridge construction quality and safety assessment on the proportion of areas with excessive template roughness, the condition of the bridge support system, the quality of the cast-in-place piles, the stress state of the beam body and the abnormal condition of the hanging basket, and performs corresponding execution adjustment operations.

2. A building surveying and mapping system according to claim 1, characterized in that: The operation steps of the bridge support system safety value are as follows: The template safety index value and the support stability value are weighted and multiplied by the corresponding weight factor coefficient to obtain the bridge support system stability value.

3. A building surveying and mapping system according to claim 2, characterized in that: The template safety index value operation steps are as follows: The concrete pouring speed is obtained through the flow sensor, the concrete slump value is obtained through the slump sensor, the admixture correction value, the initial setting time of concrete pouring, and the concrete vibration method is identified. The template side pressure estimate is calculated, the template height, wind speed and template side pressure estimate are obtained to calculate the template overturning coefficient value, and the template system's anti-overturning coefficient value and the template overturning coefficient value are analyzed to obtain the template safety index value.

4. A building surveying and mapping system according to claim 3, characterized in that: The operation steps of the anti-overturning coefficient value of the template system are as follows: Obtain the top view of the bridge pier and the outer diagonal brace of the template, and establish a polar coordinate system, with the center of the pier as the pole and the distance from the center of the diagonal brace to the center of the pier as the distance to the pole. The polar coordinate of the diagonal brace center is (r n ,θ n ), n is the number of the diagonal brace, θ is the angle from the polar axis to the ray connecting the pole and the center point of the diagonal brace, number m is the center point of the diagonal brace (r m ,θ m ) The polar coordinates of the point symmetric about the pole center are (r m ,θ m +π), according to the set formula model , get the distance dj from each coordinate point to the symmetric point of the diagonal brace numbered m n , a1 and a2 are the set weight factor coefficients, and the minimum value of the distance from each coordinate point to the symmetrical point of the diagonal brace numbered m is calculated, recorded as the symmetrical deviation of the symmetrical point of the diagonal brace numbered m, the symmetrical deviation of each symmetrical point of the diagonal brace is calculated in turn and summed up to obtain the symmetrical offset value dc of the diagonal brace, the angle θx between the diagonal brace outside the template and the ground, the number of diagonal braces xs, the distance mj from the diagonal brace to the bottom of the template, the density value dl of the template tension bolt setting, it is normalized with the symmetrical offset value dc of the diagonal brace, according to the set formula The anti-overturning coefficient value kq of the formwork system is calculated, where XO1, XO2, XO3, XO4 and XO5 are the preset weight factors of the angle between the outer diagonal brace of the formwork and the ground, the number of diagonal braces, the distance between the diagonal brace and the bottom of the formwork, the density value of the formwork tension bolts and the symmetrical offset value of the diagonal brace. is the preset correction factor.

5. A building surveying and mapping system according to claim 2, characterized in that: The steps of the bracket installation value operation are as follows: The image of the support rod is obtained by the camera, and the RGB value of the image of the support rod is analyzed and matched with the reference red-brown rust RGB value and black rust RGB value. When the RGB value of the rod image matches the reference value successfully, the area is a rusted area, and the ratio of the area of ​​the rusted area to the total area of ​​the rod is obtained. An alternating current is passed through the probe coil to generate an alternating magnetic field around the support rod, and the conductivity, eddy current signal amplitude and phase value of the support rod are obtained. The rust value of the support rod is obtained by analysis, and the curvature of the rod, the step value of the cross bar and the angle between the diagonal brace and the ground are obtained. The support condition value is obtained by analysis with the rust value of the support rod.

6. A building surveying and mapping system according to claim 1, characterized in that: The quality value operation steps of the cast-in-place pile are as follows: Obtain the mud relative density value, mud viscosity value, mud sand content and mud colloid rate in the cast-in-place pile information during bridge construction, and mark them as xm, nd, hs and jl respectively, and normalize them according to the set formula nz=UO4×jl / [UO1×(xm-T3) 2 +UO2×(nd-T4) 2 +UO3×hs], and the mud state value nz is obtained, wherein UO1, UO2, UO3 and UO4 are respectively the set weight factor coefficients of the mud relative density value, mud viscosity value, mud sand content and mud colloid rate, T3 is the set mud reference relative density value, and T4 is the set mud reference sand content; The bottom sediment thickness value and the steel cage state value in the bored pile information during bridge construction are obtained, and then combined with the mud state value to calculate the quality value of the bored pile.

7. A building surveying and mapping system according to claim 1, characterized in that: The operation steps of the beam stress state value and the hanging basket shape anomaly value are as follows: The stress value of the prestressed tendons in the beam body of the bridge superstructure during the tensioning and anchoring process is measured by stress sensors, and a rectangular coordinate system is established, with the horizontal axis being the measurement time and the vertical axis being the stress value. A line graph of stress changes in the tensioning and anchoring stages is established, and the slope of each of the two adjacent measured stress lines is calculated. When the slope is less than zero, it is recorded as a descending slope, and the sum is performed to obtain the total descending slope in the tensioning and anchoring stages. When the slope is greater than zero, it is recorded as an ascending slope, and the sum is performed to obtain the total ascending slope in the tensioning and anchoring stages. The stress values ​​at the end of tensioning and the end of anchoring are obtained, and the difference is processed to obtain the anchoring stress loss value, and the stress state value of the beam body is calculated; During bridge construction, displacement sensors are set at the four corners of the main truss and bottom basket of the hanging basket to measure the vertical and horizontal displacements of the hanging basket during the construction process of concrete pouring, prestressing and walking of the hanging basket, and compare them with the reference displacements of each stage in the database. When the vertical and horizontal displacements exceed the reference displacements, the time is marked as the abnormal displacement moment, and when the vertical and horizontal displacements are less than the reference displacements, the time is marked as the normal displacement moment. The total duration of the abnormal displacement is counted, and the interval time between the normal displacement moment and the next normal displacement moment is counted and summed to obtain the total interval time of the normal displacement moment. The total duration of the abnormal displacement and the total interval time of the normal displacement moment are weighted and multiplied by the corresponding influencing factor coefficient to obtain the hanging basket shape abnormality value.

8. A building surveying and mapping system according to claim 1, characterized in that: The execution adjustment operation steps corresponding to the execution are as follows: Set the gradient reference intervals G1, G2 and G3 of the bridge quality value, and substitute each bridge quality value into the preset gradient reference intervals G1, G2 and G3 for comparative analysis; When the bridge quality value is within the preset gradient reference interval G1, an abnormal construction quality signal and an alarm signal are generated, and are sent to the set display screen for display in the form of a label one text description; when the bridge quality value is within the preset gradient reference interval G2, a general construction quality signal and an alarm signal are generated, and are sent to the set display screen for display in the form of a label two text description; when the bridge quality value is within the preset gradient reference interval G3, a normal construction quality signal is generated, and are sent to the set display screen for display in the form of a label three text description; Compare and analyze the bridge safety value with the set comparison threshold XX1, and generate a construction safety non-compliance signal and an alarm signal, which are sent to the set display screen in the form of label four text descriptions for display; When the bridge safety value is greater than or equal to the set comparison threshold XX1, a construction safety compliance signal is generated, and an alarm signal is sent to the set display screen for display in the form of label five text description.

9. A building surveying and mapping system according to claim 8, characterized in that: The operation steps of the bridge quality value and bridge safety value are as follows: By placing an ultrasonic transmitter and a receiver on one side of the construction template of the pier, the construction template of the pier is divided into several areas, the propagation speed of the ultrasonic wave and the round-trip time of the reflected wave at different positions in each area are obtained, and the template surface difference of each area is calculated by the formula. The template surface difference of each area is compared and analyzed with the set reference threshold. When the template surface difference of each area is greater than the set reference threshold, the area corresponds to the template roughness exceeding the standard area. When the template surface difference of each area is less than or equal to the set reference threshold, the area corresponds to the template roughness meeting the standard area. The number of template roughness exceeding the standard area and the ratio of the total number of areas are counted. The quality value of the cast-in-place pile and the stress state value of the beam body are converted into lengths according to a certain ratio, and a rectangle is constructed with the lengths of the quality value of the cast-in-place pile and the stress state value of the beam body as the long and short sides of the rectangle; the proportion of the template roughness exceeding the standard area is converted into lengths according to a certain ratio, and a circle is constructed inside the rectangle with the length of the proportion of the template roughness exceeding the standard area as the radius of the circle, wherein the center of the circle coincides with the center of the rectangle, and the non-overlapping area formed by the circle and the rectangle is identified and marked as the quality value of the bridge; The bridge safety value is obtained by calculating the bridge support system safety value and the hanging basket abnormal value.

10. A building surveying and mapping system according to claim 1, characterized in that: The server is also connected to: The data acquisition unit is used to collect the template information, support information, cast-in-place pile information and bridge superstructure information of each bridge, and send it to the support analysis unit, pile foundation analysis unit and superstructure unit respectively through the server.

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