CN115168976A - BIM technology-based foundation pit water level visualization system and method - Google Patents
BIM technology-based foundation pit water level visualization system and method Download PDFInfo
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Abstract
The invention relates to the technical field of foundation pit dewatering, in particular to a foundation pit water level visualization system and method based on a BIM (building information modeling) technology, wherein the method comprises the following steps of: s100, collecting data information of a foundation pit, wherein the data information comprises a foundation pit drawing, a supporting structure setting condition, a foundation pit water level and a foundation pit surrounding environment; s200, constructing a foundation pit BIM model according to the data information of the foundation pit; s300, acquiring precipitation information around the foundation pit; and S500, simulating the water level change of the foundation pit according to the data information of the foundation pit and the surrounding precipitation information of the foundation pit, and adjusting a BIM (building information modeling) model of the foundation pit. This scheme of adoption has realized the visual show of foundation ditch, and the managers of being convenient for knows the condition of foundation ditch, simulates foundation ditch water level variation simultaneously, and the managers of being convenient for knows foundation ditch water level variation in advance to can in time take corresponding measure.
Description
Technical Field
The invention relates to the technical field of foundation pit dewatering, in particular to a foundation pit water level visualization system and method based on a BIM (building information modeling) technology.
Background
The foundation pit is a soil pit excavated at the design position of the foundation according to the elevation of the foundation and the plane size of the foundation. The foundation pit dewatering refers to dewatering work performed for ensuring that the foundation pit can be constructed under a dry condition and preventing slope instability, foundation quicksand, pit bottom uplift, pit bottom piping and foundation bearing capacity reduction when the underground water level is higher than the excavation bottom surface when the foundation pit is excavated. The effect of the foundation pit precipitation is directly related to the safety of the foundation pit. Insufficient precipitation can cause construction failure and even cause foundation pit collapse; excessive precipitation can cause uncontrollable effects on the settlement control of surrounding structures and even damage to the natural environment.
In the foundation pit construction process at the present stage, managers can collect and analyze data of the foundation pit, surrounding environment, underground water and the like, so that proper foundation pit dewatering operation can be analyzed. However, the traditional data display is basically in a plane display stage, the visualization degree is low, and the acquired data information cannot be visually displayed in front of managers, so that the information is not beneficial to understanding the concrete conditions of the foundation pit and making corresponding foundation pit dewatering operation; secondly, the data analysis real-time performance of the foundation pit is poor at the present stage, and the influence of some transformed environmental factors on the water level of the foundation pit is ignored, so that the foundation pit information known by managers has hysteresis, the foundation pit information cannot timely cope with the foundation pit water level change which possibly occurs in the future, and the foundation pit dewatering operation is updated and adjusted.
Disclosure of Invention
The invention provides a foundation pit water level visualization system and method based on a BIM technology, which realize visualization display of a foundation pit, facilitate managers to know the condition of the foundation pit, simulate foundation pit water level changes, facilitate the managers to know the foundation pit water level changes in advance, and accordingly can take corresponding measures in time.
The invention provides a basic scheme I:
a foundation pit water level visualization method based on a BIM technology comprises the following steps:
s100, collecting data information of a foundation pit, wherein the data information comprises a foundation pit drawing, a supporting structure setting condition, a foundation pit water level and a foundation pit surrounding environment;
s200, constructing a foundation pit BIM model according to the data information of the foundation pit;
s300, acquiring precipitation information around the foundation pit;
and S500, simulating the water level change of the foundation pit according to the data information of the foundation pit and the peripheral precipitation information of the foundation pit, and adjusting a BIM (building information modeling) model of the foundation pit.
The beneficial effects of the first basic scheme are as follows: the data information including foundation pit drawings, supporting structure setting conditions, foundation pit water level and foundation pit surrounding environment is collected, and therefore the foundation condition of the foundation pit is relatively comprehensive. According to the data information who gathers again the foundation ditch BIM model of structure, for single data presentation, this scheme of adoption has realized the visual show of foundation ditch, and the managers of being convenient for more clear understanding and master the foundation ditch condition, be favorable to it to make more reasonable precipitation strategy. The principle of the method is that different precipitation modes are required according to different basic conditions of the foundation pit, and improper precipitation modes not only lead to poor precipitation effect, but also cause the results of cracks generated by uneven settlement of surrounding buildings and structures, damage of underground pipelines, instability of a foundation pit supporting system, failure of the foundation pit supporting system and the like.
The change of the water level of the foundation pit is not only influenced by underground water, but also the water level of the foundation pit can be influenced directly (the natural precipitation falls into the foundation pit) or indirectly (for example, the rainwater permeates into the ground near the foundation pit to cause the change of the underground water). Therefore, in the scheme, the information of the precipitation around the foundation pit is collected, the data information of the foundation pit and the information of the precipitation around the foundation pit are integrated, the water level change of the foundation pit is simulated, the dynamic simulation of the future change trend of the water level of the foundation pit is realized, and managers can know the future water level change of the foundation pit by looking up the adjusted BIM model of the foundation pit, so that corresponding measures can be taken in time to deal with the change.
To sum up, this scheme of adoption has realized the visual show of foundation ditch, and the managers of being convenient for know the condition of foundation ditch, simulates foundation ditch water level variation simultaneously, and the managers of being convenient for know foundation ditch water level variation in advance to can in time take corresponding measure.
Further, S300 includes:
s301, acquiring weather forecast information, wherein the weather forecast information comprises a precipitation area and precipitation amount;
s302, acquiring positioning information of a foundation pit;
and S303, generating the information of the precipitation around the foundation pit according to the weather forecast information and the positioning information of the foundation pit.
Has the beneficial effects that: according to the positioning information of the precipitation area and the foundation pit, whether the periphery of the foundation pit is located in the precipitation area or not can be analyzed, and then the precipitation condition of the periphery of the foundation pit is generated according to the precipitation amount, so that whether precipitation and the specific precipitation amount can occur at the periphery of the foundation pit or not is obtained.
Further, the surrounding environment of the foundation pit comprises underground water and geological features within a preset range.
Has the beneficial effects that: the underground water body and the geological features around the foundation pit are known, so that the potential hazards possibly existing in the construction process are known, and the construction safety is guaranteed.
Further, S500 includes:
s501, analyzing rainfall infiltration amount within a preset range according to the information of the rainfall around the foundation pit and geological features within the preset range;
s502, simulating foundation pit water level change according to precipitation infiltration amount and underground water in a preset range;
and S503, adjusting the BIM model of the foundation pit according to the water level change of the foundation pit.
Has the advantages that: precipitation and geological feature all can cause the influence to the infiltration volume of rainwater, so in this scheme, according to the peripheral precipitation information of foundation ditch and the geological feature of predetermineeing the within range, the precipitation infiltration volume of within range is predetermine in the analysis, reunion groundwater, the indirect influence that simulation precipitation brought the foundation ditch water level (rainwater infiltration to near the foundation ditch underground, lead to groundwater to change, groundwater's change leads to the fact the influence to the foundation ditch water level again), thereby adjust foundation ditch BIM model, reflect the higher foundation ditch water level change of accuracy.
Further, S400, acquiring construction information around the foundation pit;
and S500, simulating the water level change of the foundation pit according to the data information of the foundation pit, the precipitation information around the foundation pit and the construction information around the foundation pit.
Has the advantages that: with the progress of construction, some construction projects may affect underground water bodies, geological structures and the like around the construction site, so that the change of the water level of the foundation pit is indirectly affected. Therefore, in the scheme, the construction information around the foundation pit is obtained, the data information of the foundation pit and the precipitation information around the foundation pit are combined, the water level change of the foundation pit is simulated, and the simulation accuracy of the water level change of the foundation pit is improved.
Further, S501 includes:
analyzing geological characteristics, namely analyzing geological characteristic change data according to geological characteristics in a preset range and construction information around the foundation pit;
adjusting geological features, namely adjusting the geological features within a preset range according to geological feature change data;
and analyzing the infiltration amount, namely analyzing the rainfall infiltration amount within a preset range according to the adjusted geological features within the preset range.
Has the beneficial effects that: according to the geological features and the construction information around the foundation pit within the preset range, the influence of construction projects on the geological features along with the advancement of the construction progress can be obtained, so that the geological features within the preset range are adjusted, and the obtained geological features are more in line with the actual situation.
And further, S600, sending out early warning of water level increase according to the water level change of the foundation pit.
Has the beneficial effects that: and sending a water level increase early warning according to the water level change of the foundation pit, and reminding managers to take corresponding measures in time.
The invention provides a second basic scheme:
a foundation pit water level visualization system based on the BIM technology uses the foundation pit water level visualization method based on the BIM technology.
The second basic scheme has the beneficial effects that: the data information including foundation pit drawings, supporting structure setting conditions, foundation pit water levels and foundation pit surrounding environments is collected, and therefore the foundation condition of the foundation pit is relatively comprehensive. According to the data information who gathers again the foundation ditch BIM model of structure, for single data presentation, this scheme of adoption has realized the visual show of foundation ditch, and the managers of being convenient for more clear understanding and master the foundation ditch condition, be favorable to it to make more reasonable precipitation strategy. The principle of the method is that different precipitation modes are required according to different basic conditions of the foundation pit, and improper precipitation modes not only lead to poor precipitation effect, but also cause the results of cracks generated by uneven settlement of surrounding buildings and structures, damage of underground pipelines, instability of a foundation pit supporting system, failure of the foundation pit supporting system and the like.
The change of the water level of the foundation pit is not only influenced by underground water, but also the water level of the foundation pit can be influenced directly (precipitation is carried out in the foundation pit) or indirectly (for example, rainwater permeates to the ground nearby the foundation pit to cause the change of the underground water). In this scheme of the event, gather the peripheral precipitation information of foundation ditch to synthesize the data information and the peripheral precipitation information of foundation ditch, simulate foundation ditch water level variation, realized the dynamic simulation of the future trend of changing of foundation ditch water level, managers can know future foundation ditch water level variation through looking over the foundation ditch BIM model after the adjustment, thereby in time take corresponding measure to remove the reply.
To sum up, this scheme of adoption has realized the visual show of foundation ditch, and the managers of being convenient for know the condition of foundation ditch, simulates foundation ditch water level variation simultaneously, and the managers of being convenient for know foundation ditch water level variation in advance to can in time take corresponding measure.
Drawings
Fig. 1 is a flow chart of a foundation pit water level visualization method based on the BIM technology in an embodiment of the present invention.
Fig. 2 is a schematic diagram of sensor grouping in a foundation pit water level visualization method based on the BIM technology in the embodiment of the present invention.
Detailed Description
The following is further detailed by way of specific embodiments:
example 1:
example 1 is substantially as shown in figure 1:
a foundation pit water level visualization method based on a BIM technology comprises the following steps:
s100, collecting data information of a foundation pit, wherein the data information comprises a foundation pit drawing, a supporting structure setting condition, a foundation pit water level and a foundation pit surrounding environment; the surrounding environment of the foundation pit comprises underground water and geological features within a preset range.
S200, constructing a BIM (building information modeling) model of the foundation pit according to the data information of the foundation pit; in the embodiment, the BIM model of the foundation pit is constructed through Revit software, so that the basic condition of the foundation pit can be visually displayed, and managers can conveniently know the condition of the foundation pit.
S300, acquiring precipitation information around the foundation pit; s300 comprises the following steps:
s301, weather forecast information is obtained, and the weather forecast information comprises a precipitation area and precipitation.
S302, obtaining the positioning information of the foundation pit.
And S303, generating precipitation information around the foundation pit according to the weather forecast information and the positioning information of the foundation pit. Specifically, the positioning information of the foundation pit is compared with the precipitation area, in this embodiment, the foundation pit is used as a center, an area within a range of five hundred meters in radius is used as a comparison area, the comparison area is compared with the precipitation area, whether an overlapping area exists between the comparison area and the precipitation area is analyzed, and if so, the precipitation amount corresponding to the overlapping area is obtained.
And S400, acquiring construction information around the foundation pit.
And S500, simulating the water level change of the foundation pit according to the data information of the foundation pit, the precipitation information around the foundation pit and the construction information around the foundation pit, and adjusting a BIM (building information modeling) model of the foundation pit. S500 comprises:
s501, analyzing rainfall infiltration volume within a preset range according to the information of the rainfall around the foundation pit and geological features within the preset range; specifically, analysis is performed according to the precipitation amount corresponding to the overlapping area, which is not described in detail below. The rainfall infiltration amount in this embodiment refers to the rainfall amount of rainwater infiltrating to the ground bottom of each monitoring point within a preset range.
S501 includes:
a geological feature analysis step, which is to analyze geological feature change data according to geological features in a preset range and construction information around the foundation pit; in this embodiment, the construction information around the foundation pit includes construction items and corresponding construction time, and the geological feature change data is analyzed in an artificial intelligence manner according to geological features, the construction items and the corresponding construction time within a preset range.
Specifically, a BP neural network module is adopted, the BP neural network module comprises a BP neural network model, the BP neural network module analyzes geological feature change data by using a BP neural network technology, and a three-layer BP neural network model is firstly constructed and comprises an input layer, a hidden layer and an output layer; for hidden layers, the present embodiment uses the following formula to determine the number of hidden layer nodes:
where l is the number of nodes of the hidden layer, n is the number of nodes of the input layer, m is the number of nodes of the output layer, and a is a number between 1 and 10, which is taken as 6 in this embodiment, so that the hidden layer has 8 nodes in total. BP neural networks typically employ Sigmoid differentiable functions and linear functions as the excitation function of the network. This example selects the S-type tangent function tansig as the excitation function for hidden layer neurons. The prediction model selects an S-shaped logarithmic function tansig as an excitation function of neurons in an output layer. After the BP network model is constructed, training the model by using historical data as a sample, and obtaining the model which is obtained after the training is finishedAnd (6) analyzing the result.
And adjusting the geological features, namely adjusting the geological features within a preset range according to the geological feature change data.
And analyzing the infiltration amount, namely analyzing the precipitation infiltration amount within a preset range according to the adjusted geological features within the preset range and the precipitation information around the foundation pit. In this embodiment, a BP neural network algorithm model is adopted, the model includes three layers, namely an input layer, a hidden layer and an output layer, the input layer includes a plurality of units, the units correspond to geological features and precipitation information around a foundation pit in a preset range after adjustment, the output layer is precipitation infiltration capacity in the preset range, and test data of all test process nodes are input to the input layer through the BP neural network algorithm model, so that an analysis result can be obtained.
And S502, simulating foundation pit water level change according to data information of the foundation pit, precipitation infiltration amount within a preset range and underground water, wherein a BP neural network algorithm model is adopted in the embodiment and comprises three layers, namely an input layer, a hidden layer and an output layer, the input layer comprises a plurality of units and respectively corresponds to the data information of the foundation pit, the precipitation infiltration amount within the preset range and the underground water, the output layer is the foundation pit water level change, and test data of all test process nodes are input into the input layer through the BP neural network algorithm model, so that an analysis result can be obtained.
And S503, adjusting the BIM model of the foundation pit according to the water level change of the foundation pit. Specifically, show the water level variation of current water level in the foundation ditch and prediction through different colours, the managers of being convenient for knows the water level variation.
And S600, sending a water level increase early warning according to the water level change of the foundation pit, and reminding a manager to take corresponding measures in time.
This scheme of adoption has realized the visual show of foundation ditch, and the managers of being convenient for know the condition of foundation ditch, simulates foundation ditch water level variation simultaneously, and the managers of being convenient for know foundation ditch water level variation in advance to can in time take corresponding measure.
A foundation pit water level visualization system based on the BIM technology uses the foundation pit water level visualization method based on the BIM technology.
Example 2:
the basic principle of embodiment 2 is the same as that of embodiment 1, except that in embodiment 2, the foundation pit water level visualization method based on the BIM technology further includes the following steps:
and S700, generating the distribution positions of the sensors in the foundation pit based on the BIM model of the foundation pit. The sensor is used for detecting each item data index in the foundation ditch, and the sensor device who specifically adopts sets up as required, and in this embodiment, the sensor distribution position that generates is to same kind of sensor.
S700 includes the steps of:
s701, arranging a plurality of sensors in a foundation pit BIM in an evenly distributed mode;
s702, simulating the change of the foundation pit in a real construction process by adopting a foundation pit BIM model, and acquiring dynamic data acquired by each sensor;
s703, calculating a correlation coefficient between the dynamic data acquired by each sensor, in this embodiment, the correlation coefficient between the dynamic data acquired by two sensors is calculated by using the following formula:
wherein x is dynamic data acquired by a sensor; y is to make a sensor acquire dynamic data; cov (x, y) is the covariance of x and y; var | x | is the variance of x; var | y | is the variance of y.
S704, grouping the sensors once according to the correlation coefficient among the dynamic data acquired by each sensor, wherein in the embodiment, the correlation coefficient among the sensors is larger than a coefficient threshold value and is divided into a group; as shown in fig. 2, the foundation pit BIM model in this embodiment is a matrix model. The foundation pit BIM model is provided with 12 sensor point positions in total, and in the embodiment, the sensors are divided into two groups, wherein a circle represents a first group, and a square represents a second group.
S705, collecting the distance between each sensor and other sensors in a group; in this embodiment, when the sensor is disposed, a distance between the sensor point location 1 and the sensor point location 3 is a first preset distance, a distance between the sensor point location 1 and the sensor point location 6 is also the first preset distance, and a distance between the sensor point location 1 and the sensor point location 5 is a second preset distance.
S706, performing secondary grouping on the sensors according to the distances between the sensors and other sensors; in this embodiment, the distance between the two sensors is smaller than or equal to the second preset distance, and the two sensors are divided into one group. The sensors in the first group are divided into groups a (1, 4, 5, 6, 10) and B (9, 12), while the sensors in the second group still have only one group (2, 3, 7, 8, 11).
S707, generating a sensor point location arrangement result according to the conditions of the primary grouping and the secondary grouping and the preset sensor setting number; firstly, according to the condition of one-time grouping, the sensors are uniformly divided into two groups after one-time grouping, in the embodiment, the preset number of the sensors is 8, so that 4 sensors can be arranged in the first group and the second group; then, according to the situation of the secondary grouping, a sensor point location arrangement result is generated, and the sensors of the first group are divided into two groups during the secondary grouping.
In this embodiment, a BP neural network algorithm model is adopted, the model includes three layers, namely an input layer, a hidden layer and an output layer, the input layer inputs grouping conditions of secondary grouping, the output layer is a sensor distribution result, and the grouping conditions of the secondary grouping are input to the input layer through the BP neural network algorithm model, so that the sensor distribution result can be obtained. In this embodiment, the distribution results of the sensors are 3 in group a and 1 in group B.
And finally, generating a sensor point location arrangement result according to the sensor distribution result. In this embodiment, sensor installation points are randomly generated in each group according to the number of the sensors that can be installed, and the set of the sensor installation points is used as a sensor point arrangement result. That is, 3 of the 5 positions provided by the group a are randomly selected as sensor mounting points; randomly selecting 1 of the 2 positions provided by the group B as a sensor mounting point position; 4 of the 5 positions provided in the second set were randomly selected as sensor mounting sites.
And S708, performing field arrangement according to the point position arrangement result of the sensors, and acquiring actual dynamic data acquired by each sensor.
And S709, calculating a correlation coefficient between the dynamic data acquired by the sensors in the same group in the primary grouping result, and generating a fault analysis result. In this embodiment, when the correlation coefficient between the dynamic data acquired by each sensor in the same group is smaller than the correlation threshold, a fault analysis result is generated to prompt a user that a sensor fault, a foundation pit BIM model fault, a geological change analysis and the like may exist.
According to the scheme, because the direct correlation coefficient of the dynamic data acquired by each sensor is calculated in the foundation pit BIM model, and the sensors are distributed according to the calculation, the sensor setting quantity is reduced and the sensor setting cost is reduced while the comprehensiveness of data acquisition is ensured. And because foundation pit changes are simulated in the early stage to obtain due correlation among the sensors, in the actual working process, if the correlation coefficient of the sensors in the same group is obviously reduced, a user can be prompted of abnormal conditions, and fault detection can be prompted as soon as possible. To sum up, this scheme of adoption can reduce sensor setting quantity when guaranteeing the data acquisition comprehensiveness, reduces the sensor and sets up the cost, in addition, can also be in the work progress, detect and the suggestion to the abnormal conditions.
A foundation pit water level visualization system based on the BIM technology uses the foundation pit water level visualization method based on the BIM technology.
The foregoing are merely exemplary embodiments of the present invention, and no attempt is made to show structural details of the invention in more detail than is necessary for the fundamental understanding of the art, the description taken with the drawings making apparent to those skilled in the art how the several forms of the invention may be embodied in practice with the teachings of the invention. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be defined by the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (8)
1. A foundation pit water level visualization method based on a BIM technology is characterized in that: the method comprises the following steps:
s100, collecting data information of a foundation pit, wherein the data information comprises a foundation pit drawing, a supporting structure setting condition, a foundation pit water level and a foundation pit surrounding environment;
s200, constructing a foundation pit BIM model according to the data information of the foundation pit;
s300, acquiring precipitation information around the foundation pit;
and S500, simulating the water level change of the foundation pit according to the data information of the foundation pit and the surrounding precipitation information of the foundation pit, and adjusting a BIM (building information modeling) model of the foundation pit.
2. The BIM technology-based foundation pit water level visualization method according to claim 1, wherein: s300 comprises the following steps:
s301, acquiring weather forecast information, wherein the weather forecast information comprises a precipitation area and precipitation;
s302, acquiring positioning information of a foundation pit;
and S303, generating the information of the precipitation around the foundation pit according to the weather forecast information and the positioning information of the foundation pit.
3. The BIM technology-based foundation pit water level visualization method according to claim 2, wherein: the surrounding environment of the foundation pit comprises underground water and geological features within a preset range.
4. The BIM technology-based foundation pit water level visualization method according to claim 3, wherein: s500 comprises:
s501, analyzing rainfall infiltration amount within a preset range according to the information of the rainfall around the foundation pit and geological features within the preset range;
s502, simulating foundation pit water level change according to precipitation infiltration amount and underground water body within a preset range;
and S503, adjusting the BIM model of the foundation pit according to the water level change of the foundation pit.
5. The BIM technology-based foundation pit water level visualization method according to claim 4, wherein: s400, acquiring construction information around the foundation pit;
and S500, simulating the water level change of the foundation pit according to the data information of the foundation pit, the precipitation information around the foundation pit and the construction information around the foundation pit.
6. The BIM technology-based foundation pit water level visualization method according to claim 5, wherein: s501 includes:
analyzing geological characteristics, namely analyzing geological characteristic change data according to geological characteristics in a preset range and construction information around the foundation pit;
adjusting geological features, namely adjusting the geological features within a preset range according to geological feature change data;
and analyzing the infiltration amount, namely analyzing the rainfall infiltration amount within a preset range according to the adjusted geological features within the preset range.
7. The BIM technology-based foundation pit water level visualization method according to claim 1, wherein: and S600, sending out a water level increase early warning according to the water level change of the foundation pit.
8. The utility model provides a foundation ditch water level visualization system based on BIM technique which characterized in that: the BIM technology-based foundation pit water level visualization method of any one of the preceding claims 1-7 is used.
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