KR102233374B1 - Integrated safety evaluation system for temporary earth retaining structure and adjacent structure - Google Patents

Abstract

The present invention selects a factor that has a significant influence on adjacent structures among the field factors of a temporary earth protection facility, quantitatively predicts the influence of the adjacent structure according to the measured value of the selected factor, and evaluates the safety of the adjacent structure. Regarding an integrated stability evaluation system for adjacent structures, a temporary facility measurement unit 100 that acquires on-site measurement values for the condition of the earth and the ground, an adjacent structure measurement unit 200 that obtains measurement values for the adjacent structures, and on-site measurement. In addition to predicting the state change by predicting the state change by static analysis with the value of unknown design variables obtained by inverse analysis according to the value, the factors that affect adjacent structures are selected according to the field measurement values that are correlated with the measurement values of the adjacent structures, and the selected factors are selected. It includes an integrated monitoring unit 300 to evaluate the safety by predicting the future of the state of the adjacent structure.

Description

Integrated safety evaluation system for temporary earth retaining structure and adjacent structure

The present invention selects a factor that has a significant influence on adjacent structures among the field factors of a temporary earth protection facility, quantitatively predicts the influence of the adjacent structure according to the measured value of the selected factor, and evaluates the safety of the adjacent structure. It relates to an integrated stability evaluation system for adjacent structures.

Earth protection facilities that excavate and construct the ground at various construction and civil engineering sites are affected by various conditions such as external force and support conditions, as well as loads from back soil pressure, water pressure, and adjacent structures. Is redistributed by the displacement of the wall during construction and changes from time to time.

In order to secure the safety of such temporary facilities, preliminary surveys are conducted on the ground conditions to plan construction methods and processes, and after designing, construction begins, and even during construction, the temporary facilities and ground conditions are measured with various on-site measuring instruments to predict risks in advance. And establishes and manages measures for risk elimination.

Here, uncertain ground conditions, including soil quality parameters, including ground adhesion and internal friction angle, unit weight of ground, and ground reaction force coefficient, and uncertain temporary facility conditions related to materials, members, and structures (e.g. creep deformation of support holes) are investigated in advance. According to the design variable value, it is determined as the value of the design variable, and the static analysis is performed, and the result is reflected in the planning design stage, and during construction, the reverse analysis is performed according to the measurement results of various field measuring instruments and updated. And, by performing static analysis reflecting the updated value, it predicts temporary facility and ground behavior, and establishes preliminary measures to satisfy the management standard value according to the prediction result.

In addition, by measuring the slope and cracks of the existing structure adjacent to the temporary earth protection facility, the safety of the existing adjacent structure is also investigated when constructing the temporary earth protection facility.

However, it was not possible to know which state change of the earthen guarding facility and the ground affected the adjacent structure, so the plan for resolving the influence on the adjacent structure could not be accurately reflected in the design variation of the earthen guarding facility, and had to rely on experience.

Moreover, it is desirable to evaluate the safety by predicting the impact of the construction of the micro-construction section to be constructed according to the process during the construction of the temporary earth protection facility, and to reflect it in the construction management. It was not able to provide a quantitative design change for the temporary facility.

KR 10-2011-0121003 A 2011.11.07. KR 10-2011-0033547 A 2011.03.31.

Therefore, the present invention can identify the factors of the temporary installation site that affects the adjacent structures, evaluate the safety of the adjacent structures according to the factors, and quantitatively provide the impact on the adjacent structures, according to the construction of the micro-construction section. The purpose is to provide an integrated safety evaluation system for temporary installations and adjacent structures that can provide data that can predict and cope with the impact.

In order to achieve the above object, the present invention provides a system for evaluating the safety of an integrated earth-blocking facility and adjacent structures, comprising: a temporary facility measuring unit 100 that measures a condition of the temporary earth-blocking facility and the ground with a measuring instrument to obtain field measurement values; Adjacent structure measurement unit 200 for obtaining a measurement value of the adjacent structure by measuring the state of the adjacent structure existing in the vicinity of the temporary earth protection facility; And design variables, including soil quality parameters related to ground behavior, and perform reverse analysis to obtain design variable values so that the design predicted value obtained as the value of the response variable coincides with the on-site measurement value, and design obtained according to the results of the back analysis. A temporary facility evaluation unit 310 for evaluating the safety of a construction section and a micro-construction section to be constructed in the future by predicting a state change by static analysis by a variable value; An adjacent structure evaluation unit 320 for selecting a factor affecting the adjacent structure by performing a correlation analysis between the field measurement value and the adjacent structure measurement value; Integrated monitoring unit 300 having a; Includes.

According to an embodiment of the present invention, the adjacent structure evaluation unit 320 of the integrated monitoring unit 300 uses the field measurement value as the value of the independent variable and the adjacent structure measurement value as the value of the dependent variable. To select factors affecting adjacent structures.

According to an embodiment of the present invention, the adjacent structure evaluation unit 320 of the integrated monitoring unit 300 accurately analyzes the value of a design variable and obtains a result of predicting a change in the state of a temporary earthen or ground by multiple regression analysis. By reflecting in the regression equation, the state change of adjacent structures is predicted and safety is evaluated.

According to an embodiment of the present invention, the adjacent structure evaluation unit 320 of the integrated monitoring unit 300 accurately analyzes the value of the design variable and predicts the state change according to the construction of the micro-construction section, which is obtained through the multiple regression analysis. By reflecting it in the multiple regression equation, it predicts the state change of adjacent structures and evaluates the safety.

According to an embodiment of the present invention, the adjacent structure evaluation unit 320 of the integrated monitoring unit 300 accurately analyzes the design variable value obtained according to the inverse analysis result, and calculates the measurement value of the adjacent structure through numerical analysis. Predicts the change in state of, and evaluates future safety.

According to an embodiment of the present invention, the integrated monitoring unit 300 estimates the elapsed time required to reach a predetermined risk reference value according to the prediction of the temporary earth protection facility or the ground condition, and in advance according to the prediction of the condition of the adjacent structure. After estimating the elapsed time required to reach the specified risk threshold, the shorter the elapsed time, the shorter the measurement cycle of the instrument is selected, so that the temporary facility measurement unit 100 and the adjacent structure measurement unit 200 use it as the measurement cycle of the instrument. do.

The present invention constituted as described above, by performing a correlation analysis between the measured value of the site of the dirt barrier and the measured value of the adjacent structure, selects the site factors that affect the adjacent structure, and thus prepares the standard for the site management of the dirt block for securing the safety of the adjacent structure. .

According to an embodiment of the present invention, by obtaining a multiple regression equation reflecting field factors that have a significant influence on adjacent structures, it is possible to quantitatively estimate the state change of the adjacent structures according to the influence.

According to an exemplary embodiment of the present invention, since a future state change of an adjacent structure is also predicted by applying a future predicted value of a dirt barrier site, construction management for securing the safety of an adjacent structure is possible.

According to an embodiment of the present invention, it is possible to manage the construction process for securing the safety of adjacent structures by predicting in advance the effect of the micro-construction section to be constructed according to the step-by-step earthing process.

According to an embodiment of the present invention, since the safety of adjacent structures may be evaluated by positive analysis, it is possible to construct an adjacent structure that is capable of positive analysis more safely.

According to an embodiment of the present invention, by adjusting the measurement period according to the predicted result of future state change, it is possible to perform safe construction before reaching a dangerous situation.

1 is a schematic plan view illustrating an arrangement situation and a measuring instrument installation position of a temporary earthen protection facility 10 and an adjacent structure 20.
Figure 2 is a cross-sectional view illustrating in more detail the arrangement situation and the type of measuring instruments of the temporary installation 10 and the adjacent structure 20 compared to Figure 1;
3 is a block diagram of an integrated safety evaluation system for temporary earth protection facilities and adjacent structures according to an embodiment of the present invention.
Figure 4 is a flow chart of an integrated safety evaluation method consisting of an integrated safety evaluation system for temporary facilities and adjacent structures according to an embodiment of the present invention.

Prior to describing an embodiment of the present invention, by looking at the installation of a measuring instrument for measuring the state of the temporary earth protection facility 10 and the adjacent structure 20 with reference to Figs. 1 and 2, to help understanding the present invention. Let's do it.

1 is a schematic plan view illustrating an arrangement situation and a measuring instrument installation location of the temporary earthen protection facility 10 and the adjacent structure 20.

The temporary earth protection facility 10 constructed in the area where the ground is excavated at the construction site has various structures according to the construction method, as well-known, and as illustrated in FIG. 1, a strain gauge for a strut, an inclinometer for a wall, A load meter for earth anchor, a load meter for strut, etc. are installed to measure the condition of the earth protection facility 10, and an underground inclinometer is also installed on the back ground of the earth protection facility, and the condition of the back ground is also measured.

In addition, an inclinometer is also installed in the existing adjacent structures 20 existing around the construction site where the temporary earth protection facility 10 is constructed, and the condition of the adjacent structure 20 according to the excavation and construction of the temporary earth protection facility 10 is also measured. .

Referring to Figure 2, which shows in more detail about the installation of the measuring instrument, a pipe is buried in the back ground of a wall supported by a thumb pile (H-Pile), and an underground inclinometer, a water level gauge (or a pore pressure gauge), and a vertical displacement measurement system in the ground. And install a surface settlement meter, noise meter/vibration meter. In the constructed earth protection facility 10, a strain gauge is installed on the strut, and a load gauge is installed on the earth anchor.

These various kinds of measuring instruments are for measuring the condition of the earthen guarding facility 10 and the surrounding ground, and there may be more various types in addition to those illustrated in FIG. 2.

According to the prior art, the measured value obtained through the measuring instrument is used to determine the current risk of the earthen protection facility 10, but it was also used to obtain an unknown design variable by performing reverse analysis with the measured value, and the design obtained at this time. It was used to determine the future risk of the temporary earth protection facility (10) by performing a static analysis applying variables.

When explaining the reverse analysis as an example, it is difficult to accurately grasp the ground conditions such as soil quality, ground unit weight, and ground reaction force coefficient including adhesion and internal friction angle. It fluctuates during engineering, so it is treated as an unknown design variable. In addition, there may be unknown design variables related to the stiffness of the material or subsidiary material that is input to the temporary earth protection facility 10.

In addition, it is possible to calculate a value to be obtained with a measuring instrument by performing a static analysis of the behavior of the temporary earth protection facility 10 or the surrounding ground with a numerical analysis model using unknown design variables.

Accordingly, the unknown design variables are determined according to the preliminary investigation and reflected in the planning design stage, and during construction, reverse analysis is performed to define the unknown design variables of the numerical analysis model so that the numerical analysis results of the static analysis coincide with the on-site measurement results. The unknown design variable is corrected, and the future risk is predicted by performing static analysis using the modified design variable.

In general, the measured value to be used in the reverse analysis was the measured value related to the wall displacement or the axial force of the support hole. These measurement values can be reverse-interpreted using a numerical analysis model that can be calculated as the value of a design variable, but due to discontinuity due to very complex factors in the excavation environment and the inability to use mathematical derivatives, genetic algorithms were generally used. .

In addition, conventionally, as illustrated in FIG. 2, an inclinometer and a crack meter are installed in the adjacent structure 20 to determine the risk of the adjacent structure 20 according to the size of the measured value.

In contrast, the integrated safety evaluation system according to the present invention does not evaluate the risk or safety of the adjacent structure 20 only by the result of the measuring instrument installed on the adjacent structure 20, but as shown with reference to FIGS. 1 and 2 Among the measured values obtained from various types of measuring instruments installed at the temporary facility 10 site, the measured values related to the risk of the adjacent structure 20 are selected, and the factors that affect them are identified.

In addition, according to an embodiment of the present invention, the effect of the future state is also predicted by reflecting the reverse analysis result on the earthen barrier temporary facility 10 constructed according to the current process stage, and the impact of the micro-construction section to be constructed in the future process stage is also predicted. Thus, quantitative data for securing the safety of the adjacent structures 20 are generated and provided.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings so that those of ordinary skill in the art can easily implement them. In describing the embodiments of the present invention, when it is determined that a detailed description of a related known function or a known configuration viewed with reference to FIGS. 1 and 2 may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be provided. Omit it.

3 is a block diagram of a system for evaluating an integrated safety barrier for temporary facilities and adjacent structures according to an embodiment of the present invention.

According to an embodiment of the present invention, the integrated safety evaluation system includes: a temporary facility measuring unit 100 for obtaining a field measurement value by measuring the condition of the ground and the earth protection facility 10 with a measuring instrument; An adjacent structure measuring unit 200 for obtaining a measurement value of the adjacent structure by measuring the state of the adjacent structure 20 existing in the vicinity of the temporary earth protection facility 10; And an integrated monitoring unit 300 that collects and analyzes on-site measurement values and measurement values of adjacent structures through the communication network 400 in real time, and evaluates the safety of the earthen guard facility 10 and the adjacent structures 20 according to the analysis results. .

The temporary facility measurement unit 100 divides a plurality of measuring instruments 110 installed at the site of the temporary earth protection facility 10 and the site of the temporary facility 10 as illustrated in FIGS. Including a plurality of data loggers (120, 130) to be able to connect the measuring instrument 110 installed in the, but any one of the plurality of data loggers (120, 130) is connected to the communication network 400, the integrated monitoring unit 300 ) Is composed of a main data logger 120 to communicate with, and the rest is composed of a sub data logger 130 connected to the main data logger 120 through wireless communication.

Here, the main data logger 120 is also configured to be connected to the adjacent data logger 220 of the adjacent structure measuring unit 200 to be described later through wireless communication.

That is, each sub data logger 130 transmits the field measurement value acquired through the measuring instrument 110 connected to it to the main data logger 120, and the main data logger 120 is a measuring instrument 110 connected to it. By collecting and arranging the field measurement value obtained through the field measurement value, the field measurement value received from each sub data logger 130, and the adjacent structure measurement value received from the adjacent data logger 220 of the adjacent structure measurement unit 200, as described below. It is transmitted to the integrated monitoring unit 300.

In addition, the main data logger 120 is provided with a setting unit 121 of the function of setting the measurement period of the measuring instrument connected to itself and the measurement period of the measuring instrument connected to the sub data logger 130 and adjacent data logger 220, respectively. , While obtaining each measured value at a predetermined measurement cycle, it is configured to obtain a measured value at a measurement cycle adjusted according to the instruction of the integrated monitoring unit 300.

Here, the communication network 400 to be able to communicate with the integrated monitoring unit 300 may be a dedicated IoT network, and in Korea, a LoRa (Long Range) communication network established by SK and a commercial communication module at KT side. Since there is an LTE-M communication network that has launched and a NB-IoT (Narrow Band IoT) communication network that provides communication modules and services to LG U+, it is recommended to use a network available in the field.

The adjacent structure measurement unit 200 uses a measuring instrument 210 installed in the neighboring structure 20 and a measurement value of the neighboring structure obtained through the measuring instrument 210 by being connected to the measuring instrument 210 through wireless communication to the main data logger ( It includes an adjacent data logger 220 that transmits to 120).

For example, the measuring instrument 210 installed in the adjacent structure 20 may include an inclinometer and a crack measuring instrument.

The integrated monitoring unit 300 stores and manages on-site measurement values and adjacent structures measurement values transmitted from the main data logger 120 of the temporary facility measurement unit 100, and analyzes the on-site measurement values to determine the safety of the temporary installation facility 10. A temporary facility evaluation unit 310 to evaluate and an adjacent structure evaluation unit 320 that evaluates the safety of the adjacent structure 20 by analyzing the measurement value of the adjacent structure in connection with the on-site measurement value or the analysis result of the temporary facility evaluation unit 310 Equipped with, it is possible to integrally monitor the earth protection facility and adjacent structures, and to evaluate the safety.

As applied in the prior art, the temporary facility evaluation unit 310 performs a static analysis according to a numerical analysis model that reflects unknown design variables including soil quality parameters related to the ground behavior, as applied in the prior art, and obtains a design predicted value (that is, a field measurement value). Inverse analysis is performed to obtain an unknown design variable value so that the value obtained by analysis) coincides with the field measurement value. And, the temporary facility evaluation unit 310 performs a static analysis using the design variables obtained as a result of the inverse analysis, predicts the change in the state of the earth protection facility or the ground in the construction section completed so far, and evaluates the safety of the current state, including future safety. In addition, the safety is evaluated by predicting the change in condition when the micro-construction section is constructed. Since the temporary facility evaluation unit 310 can be configured by adopting the prior art, further detailed description will be omitted.

The adjacent structure evaluation unit 320 performs a correlation analysis between the site measurement value and the adjacent structure measurement value, and selects the site factor of the construction section that affects the adjacent structure, the influence factor selection unit 321, the selected site factor The construction section impact prediction unit 322 that predicts the state change of the adjacent structure 20 by the micro-construction section impact prediction unit 323, which predicts the state change of the adjacent structure 20 when the micro-construction section is constructed. , And an evaluation unit 324 for evaluating the safety of the adjacent structure 20 according to the effect of the construction section or the impact of the micro-construction section.

As a specific embodiment, the influencing factor selection unit 321 performs multiple regression analysis in which the field measurement value is the value of the independent variable and the adjacent structure measurement value is the value of the dependent variable, Screen.

The multiple regression equation is expressed by Equation 1 below.

는 k개의 독립변수이고,

는 각 독립변수의 계수이고, y는 종속변수이고,

는 독립변수에 영향을 받지 않는 상태의 종속변수 값으로서 독립변수의 절편에 해당된다.here,

Is k independent variables,

Is the coefficient of each independent variable, y is the dependent variable,

Is the value of the dependent variable in a state that is not affected by the independent variable and corresponds to the intercept of the independent variable.

의 값으로 하고, 인접 구조물 계측값을 종속변수 y의 값으로 하여, 실시간 계측하여 누적한 n회의 계측값을 대입함으로써, y절편

와 계수

을 얻을 수 있되, 다중회귀분석 기술분야에서 잘 알려진 바와 같이 다중회귀분석의 결과로 얻는 다중회귀식이 어느 정도 신빙성을 갖고 잘 설명하고 있는 지를 결정계수로 판단할 수 있고, 다중회귀식이 어느 정도 유의성을 갖는 지를 유의성 검증에 의해 판단할 수 있으며, 독립변수의 유의 확률에 따라 종속변수와 상관성 있는 독립변수를 선별할 수 있다. Thus, the field measurement value obtained by measuring with k field measuring instruments 110 is

The y-intercept is made by substituting the n-time measurement values accumulated by real-time measurement with the value of and the measurement value of the adjacent structure as the value of the dependent variable y.

And coefficient

Can be obtained, but as is well known in the field of multiple regression analysis, the degree of reliability of the multiple regression equation obtained as a result of multiple regression analysis can be judged by the coefficient of determination and the degree of significance of the multiple regression equation. It can be judged by the significance test, and the independent variable correlated with the dependent variable can be selected according to the significance probability of the independent variable.

That is, by obtaining a multiple regression equation consisting of the selected independent variable while satisfying the determination coefficient and the significance test, it is possible to know what the factor expressed as an independent variable, that is, the field state obtained by the substituted measured value.

However, if there are a plurality of measuring instruments 210 installed in the adjacent structure 20, since the independent variable y is expressed as a vector, a multiple regression equation should be implemented as a determinant and analyzed. However, by individually performing multiple regression analysis for the plurality of measuring instruments 210 installed in the adjacent structure 20, or by pre-designating any one measuring instrument 210 that is judged to be of special importance, only the measured value of the measuring instrument 210 is The applied multiple regression analysis can also be performed.

The construction section impact prediction unit 322 receives the result of predicting the future of the condition of the temporary facility or ground by statically analyzing the design variable value obtained according to the reverse analysis result from the temporary facility evaluation unit 310, and selecting the influencing factors. By reflecting in the multiple regression equation obtained in the part 321, it predicts the state change that may appear by affecting the adjacent structure 20.

That is, the future predicted value of the field measurement value corresponding to the selected field factor can be calculated by static analysis according to the application of the design variable value, and the predicted value obtained by applying the calculated value is reflected in the multiple regression equation, and installed in the adjacent structure (20). A measurement value to be obtained by one measuring instrument 210 is predicted by calculation. For example, in the multiple regression equation expressed by Equation 1, since the predicted value for the independent variable of the influencing factor is reflected as the ratio of the coefficient, the state change of the adjacent structure 20 can be predicted by calculation. Accordingly, it is predicted as a value obtained by summing the measurement value of the adjacent structure obtained by actual measurement and the predicted amount of variation of the measurement value of the adjacent structure according to the change of the field measurement value predicted by performing static analysis.

Of course, the predicted value of the field measurement value calculated by static analysis reflects only the value corresponding to the independent variable selected according to multiple regression analysis.

On the other hand, it is also possible to calculate the measured values of adjacent structures by numerical analysis by performing static analysis with the design variable values obtained according to the inverse analysis result. Of course, for the static analysis, a separate numerical analysis model that can be calculated by applying a design variable value to the measurement value of the measuring instrument 210 of the adjacent structure 20 is required. Accordingly, if a numerical analysis model is provided, the state change of the calculated measurement values of adjacent structures can be predicted. This method is preferably applied when the distance to the adjacent structure 20 is close, so that a numerical analysis model can be established reliably. If there is a difference between the predicted value obtained by reflecting the static analysis result of the temporary facility evaluation unit 310 into the multiple regression equation and the predicted value obtained by directly reflecting the design variable value to a separately prepared numerical analysis model, a certain predicted value will be used. The paper may be specified in advance.

The micro-construction section impact prediction unit 323 receives the result of predicting the micro-construction section by quantitatively interpreting the design variable value obtained according to the inverse analysis result from the temporary facility evaluation unit 310, and the influence factor selection unit 321 By reflecting it in the multiple regression equation obtained in, it predicts the effect on the adjacent structure 20 when the micro-construction section is constructed in the future.

In other words, when the micro-construction section is constructed, changes in the condition of the earth protection facility and the ground occur, so by performing a static analysis that reflects the design variable according to the reverse analysis, the design predicted value obtained as the value of the response variable is predicted in the future of the field measurement value. It can be calculated by value. By taking over these design prediction values and reflecting them in the multiple regression equation obtained by multiple regression analysis, it is possible to predict the impact on the adjacent structures during or after construction of the micro-construction section.

Of course, the predicted value of the field measurement value calculated by static analysis reflects only the value corresponding to the independent variable selected according to multiple regression analysis.

On the other hand, if a separate numerical analysis model that can calculate the measured value of the measuring instrument 210 of the neighboring structure 20 by applying the design variable value is prepared, then also perform static analysis with the design variable value to measure the measured value of the neighboring structure. It can be calculated by interpretation.

The evaluation unit 324 evaluates the safety of the adjacent structure 20 according to the size of the measured value of the adjacent structure, the safety evaluation of the adjacent structure 20 according to the amount of fluctuation of the measured value of the site by measuring the selected site factor, and the construction section The safety evaluation of the adjacent structure 20 according to the predicted value of the impact predicting unit 322 and the safety evaluation of the adjacent structure 20 according to the predicted value of the micro-construction section impact predicting unit 323 are performed.

In other words, since safety evaluation criteria are prepared according to the condition of adjacent structures (for example, slope and crack), it is possible not only to evaluate safety by comparing the size of measurement values of adjacent structures with the evaluation criteria, but also to The safety of adjacent structures can be assessed by looking at the trend of fluctuations in the measured values of structures, and safety can be assessed by estimating the time point at which the risk level is reached according to the predicted values.

In this way, the integrated monitoring unit 300 including the temporary facility evaluation unit 310 and the neighboring structure evaluation unit 320 predicts the point at which the reference value indicating the danger is reached, and the closer the point is, the shorter the measurement cycle is selected and selected. The instruction to adjust the measurement period is transmitted to the temporary facility measurement unit 100.

That is, the temporary facility evaluation unit 310 performs static analysis to which the design variable is applied to obtain a predicted value of the field measurement value over time, and also predicts in advance the point at which the predicted value reaches a predetermined risk reference value, and then reaches the risk reference value. The shorter the elapsed time until the point in time, the smaller the measurement cycle of the measuring instrument 110 of the temporary facility measurement unit 100 is selected.

In addition, the neighboring structure evaluation unit 320 reflects the predicted value of the field measurement value over time to the multiple regression equation to obtain the predicted value of the neighboring structure measurement value over time, and the time point at which the predicted value reaches a predetermined risk threshold. After predicting in advance, the shorter the elapsed time until reaching the dangerous reference value, the smaller the measurement period of the measuring instrument 210 of the adjacent structure measuring unit 200 is selected.

At this time, the selected measurement cycle is transmitted to the temporary facility measurement unit 100 to be used as a measurement cycle of the measuring devices 110 and 210. However, since it is desirable to synchronize the measurement period of the measurement device 110 of the temporary facility measurement unit 100 and the measurement device 210 of the adjacent structure measurement unit 200, a shorter period is selected among the selected measurement periods to synchronize the measurement period. It is good.

In this way, as the time of reaching the predicted risk threshold approaches, the measured values are collected in a shorter period, so the prediction and safety evaluation results that more accurately reflect real-time fluctuations in the condition of the temporary facilities and ground and adjacent structures are obtained, and the risk threshold is reached. The viewpoint can also be detected more accurately.

On the other hand, the integrated monitoring unit 300 collects and manages the status data of the temporary facility measurement unit 100 and the adjacent structure measurement unit 200 installed at the construction site through the main data logger 120 of the temporary facility measurement unit 100, and stores and manages it. A function that enables you to inquire from the terminal (1) related to the construction site, such as the client, contractor, site manager, supervisor, etc., the function to store and manage status data, measurement values, prediction results and evaluation results for each construction site, measurement values, It is also possible to have a configuration for implementing a function to process the prediction results and evaluation results so that they can be inquired by the related terminal 1, or a function of notifying the related terminal 1 when a dangerous situation occurs according to the evaluation result. . Since these functions can be implemented with reference to server functions that collect, process, and provide data by constructing a database, detailed descriptions are omitted.

Here, the related terminal 1 may be, for example, a computer or a smart device, and an Internet network or a mobile communication network will be used among the communication network 400.

Since the smart device may be a smartphone or tablet PC on which an application can be installed, by installing and executing a dedicated application implementing a query function and a notification receiving function, it is possible to access and query the integrated monitoring unit 300, The matter notified by the integrated monitoring unit 300 may be displayed to the relevant person. The present invention may be configured to include a smart device having such a dedicated application.

4 is a flowchart of an integrated safety evaluation method consisting of an integrated safety evaluation system for a temporary earth protection facility and adjacent structures according to an embodiment of the present invention.

The redundant detailed description will be omitted and a schematic sequence of the integrated safety evaluation method will be described as follows.

As the temporary facility measurement unit 100 collects and organizes the site measurement values and the measurement values of adjacent structures and transmits them to the integrated monitoring unit 300, the temporary facility evaluation unit 310 and the adjacent structure evaluation unit 320 of the integrated monitoring unit 300 Performs a step-by-step operation as follows.

The temporary facility evaluation unit 310 collects field measurement values transmitted in real time from the temporary facility measurement unit 100 (S10), and performs reverse analysis applying the field measurement values, thereby acquiring and modifying unknown design variables (S11), By performing static analysis applying design variables, the future state of the construction section is predicted (S12), and safety is evaluated according to the prediction result (S13). The evaluation result at this time may be used in a work plan for reinforcement of the temporary earth protection facility 10.

Next, the temporary facility evaluation unit 310 predicts the condition at the time of construction of the micro-construction section by preliminary analysis of the micro-construction section by reflecting the prediction result of the design variable and the future condition (S14), and the micro-construction according to the prediction of the micro-construction section. The safety between tools is evaluated (S15). The evaluation result at this time can be reflected in the design change prior to the construction of the micro-construction section.

The adjacent structure evaluation unit 320 receives and collects the measurement values of adjacent structures transmitted in real time by the relay of the temporary facility measurement unit 100 (S10), and receives the measurement values of the adjacent structures from the temporary facility evaluation unit 310. By performing multiple regression analysis with the value of the dependent variable and the value of the field measurement as the value of the independent variable, the influencing factor that significantly affects the adjacent structure among the field factors expressed as the field measurement value is selected, and the influencing factor is selected. A multiple regression equation is obtained (S21).

Next, the adjacent structure evaluation unit 320 evaluates the safety by comparing the adjacent structure measurement value with the adjacent structure evaluation standard, and evaluates the safety according to the change in the measurement value of the adjacent structure according to the change in the site measurement value (S22). ).

Next, since the temporary facility evaluation unit 310 performs a static analysis to which the design variable is applied to calculate a predicted value that is expected to be measured as a future site measurement value, the adjacent structure evaluation unit 320 receives the predicted value obtained from the calculation, and The first prediction for the structure is performed, and the second safety evaluation applying the first prediction is performed (S23). In other words, by reflecting the field measurement values predicted to change over time at the construction section site that has been constructed so far, to the multiple regression equation, the state change of adjacent structures is predicted, and safety is evaluated. The evaluation result at this time may be used to determine whether to increase the reinforcement strength when establishing a reinforcement plan for the temporary earth protection facility 10 according to the evaluation result of the temporary facility evaluation unit 310.

Next, since the temporary facility evaluation unit 310 accurately analyzes the micro-construction section and calculates a predicted value that is expected to be measured as an on-site measurement value, the adjacent structure evaluation unit 320 receives the predicted value reflecting the micro-construction section, and multiple regression By reflecting in the equation, a second prediction is performed on an adjacent structure, and a third safety evaluation is performed by applying the second prediction (S24). In other words, by reflecting the predicted value expected to be obtained as a field measurement value when constructing a micro-construction section, the multiple regression equation predicts the impact that will have on adjacent structures, and evaluates the safety accordingly. The evaluation result at this time can be used for planning or design change for the micro-construction section.

As described above, the adjacent structure evaluation unit 320 does not rely only on the value measured by the adjacent structure, but selects factors that influence significance among site factors and can specify the site factors to be taken to secure the safety of the adjacent structures. After inverse analysis, the predicted value according to the static analysis result and the effect of the predicted value according to the micro-construction section are reflected to predict the state change of the adjacent structure and evaluate the safety. Therefore, while accurately grasping the effect of the temporary earth protection facility (10), the adjacent structure ( It can contribute to the establishment of the construction plan of the temporary earth protection facility (10) that can secure the safety of 20).

If, as described above, a numerical analysis model for the state of the adjacent structure is prepared, in the first prediction and the second evaluation (S23), it is possible to predict the state change of the adjacent structure and evaluate the safety by static analysis according to the design variable. In addition, in the second prediction and the third evaluation (S24), it is possible to predict the state change of adjacent structures due to the construction of the micro-construction section and evaluate the safety by static analysis according to the design variables.

Meanwhile, the present invention may be configured by modifying the above-described embodiments.

In the above-described embodiment, the adjacent data logger 220 of the adjacent structure measurement unit 200 transmits the adjacent structure measurement value to the main data logger 120 of the temporary facility measurement unit 100 and transmits it to the integrated monitoring unit 300 However, it may be configured to be transmitted directly to the integrated monitoring unit 300. For this, a communication module to be connected to the communication network 400, like the main data logger 120, must be provided.

In the above-described embodiment, it has been described that the temporary facility evaluation unit 310 and the adjacent structure evaluation unit 320 are installed in the integrated monitoring unit 300 that can be implemented as a server connected to the communication network 400. It can be implemented in a computer that can be used by connecting to the main data logger 120 at the construction site. In this case, the integrated monitoring unit 300 may be configured to collect and store and manage status data, measurement values, prediction results, and evaluation results, inquire at the related party terminal, and notify the related party terminal.

Although shown and described in specific embodiments to illustrate the technical idea of the present invention, the present invention is not limited to the same configuration and operation as the specific embodiment as described above, and various modifications are within the scope of the present invention. Can be carried out in Therefore, such modifications should be regarded as belonging to the scope of the present invention, and the scope of the present invention should be determined by the claims to be described later.

1: related terminal
10: temporary earth protection facility 20: adjacent structure
100: temporary facility measurement unit
110: measuring instrument
120: main data logger 121: setting unit
130: sub data logger
200: adjacent structure measurement unit
210: measuring instrument
220: adjacent data logger
300: integrated monitoring unit
310: Temporary facility evaluation department
320: adjacent structure evaluation unit

Claims (6)

Temporary facility measurement unit 100 for obtaining on-site measurement values by measuring the condition of the ground and the temporary earth protection facility with a measuring instrument;
An adjacent structure measuring unit 200 for obtaining a measurement value of the adjacent structure by measuring the state of the adjacent structure existing in the vicinity of the temporary earth protection facility; And
Perform reverse analysis to obtain design variable values so that the design predicted value obtained as the value of the response variable by static analysis according to the design variable including the soil quality constant related to the ground behavior is consistent with the on-site measurement value, and the design variable obtained according to the result of the inverse analysis. A temporary facility evaluation unit 310 for evaluating the safety of the construction section and the safety of the micro-construction section by predicting the change in the condition of the soil barrier temporary facility or ground and the condition change at the time of the construction of the micro-construction section by analyzing the value; Adjacent structure evaluation unit 320 that obtains a multiple regression equation consisting of independent variables affecting adjacent structures by performing multiple regression analysis in which the field measurement value is the value of the independent variable and the adjacent structure measurement value is the value of the dependent variable ; Integrated monitoring unit 300 having a;
Including,
The adjacent structure evaluation unit 320 of the integrated monitoring unit 300
Predicting changes in conditions of adjacent structures and evaluating safety by reflecting the predicted results of changes in conditions of temporary installations or grounds and changes in conditions due to construction of micro-constructions in multiple regression equations by analyzing them with design variable values. After estimating the elapsed time required to reach the predetermined risk threshold according to the prediction of the condition of the adjacent structure, the shorter the elapsed time, the shorter the measurement cycle of the measuring instrument is selected and used as the measuring cycle of the measuring instrument in the neighboring structure measuring unit 200. Let it be,
The temporary facility evaluation unit 310 of the integrated monitoring unit 300
After estimating the elapsed time required to reach the predetermined risk threshold according to the prediction of the temporary installation or ground condition, the shorter the elapsed time, the shorter the measurement cycle of the measuring instrument is selected, and the measurement of the measuring instrument in the temporary facility measurement unit 100 To be used as a cycle
An integrated safety evaluation system for temporary facilities and adjacent structures. delete delete delete delete delete

Images