Building water supply and drainage pipeline design method and system based on BIM technology

Abstract

The application discloses a building water supply and drainage pipeline design method and system based on BIM technology, relates to the pipeline layout field, and collects building data information of the same use function according to building expected design requirements, obtains expected building water flow information, collects each type of pipeline component information and a pipeline noise coefficient, establishes a pipeline model and a pipe model, obtains a pipeline noise performance index according to the expected building water flow information and pipeline model parameters, determines a low-noise pipeline, simulates water flow through the pipeline, obtains pipeline interface stability parameters, generates pipeline interface information, and, in combination with an expected building three-dimensional model and a pipeline model corresponding to the low-noise pipeline, obtains available position information and assembly priority of the low-noise pipeline, simulates pipeline noise of each available position based on BIM technology, determines optimal pipeline position information, and generates a pipeline design scheme in combination with the optimal pipeline position information, the assembly priority, the low-noise pipeline and the pipeline interface information.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of pipeline layout, in particular to a building water supply and drainage pipeline design method and system based on BIM technology. BACKGROUND

[0002] BIM technology, namely building information modeling technology, is a comprehensive technical means based on digital three-dimensional model, which realizes the collaborative work of all participants on the same platform by integrating various information in the building project cycle into a three-dimensional information database, and the building water supply and drainage pipeline is a pipeline used for conveying and distributing domestic water and production water, and collecting and discharging domestic sewage, industrial wastewater and rainwater in building engineering.

[0003] The traditional drawing is difficult to intuitively present the three-dimensional space relationship between the water supply and drainage pipeline and the building structure, so that when the building layout is changed, it is difficult to timely adjust the position of the water supply and drainage pipeline, and the traditional design method has some deficiencies in considering the adaptation relationship between the pipeline material and the water flow speed and the influence of the pipeline preset space size on the noise, so that the water flow frequently collides with the pipeline wall to produce noise, and the water flow sound in the building continues to resonate, which seriously interferes with the life quality of the user, and when facing a complex pipeline design drawing, some subtle but key design errors may be overlooked, such as mismatching of pipe connection mode, which leads to rework or incorrect installation of pipeline installation in the construction process, causing delay of construction period and increasing construction cost. SUMMARY

[0004] To solve the above technical problems, a building water supply and drainage pipeline design method and system based on BIM technology are provided, which solves the problem of the above background technology that the adaptation relationship between the pipeline material and the water flow speed is not considered, the water flow frequently collides with the pipeline wall to produce noise, the water flow sound in the building continues to resonate, which seriously interferes with the life quality of the user, and some subtle but key design errors are overlooked, leading to rework or incorrect installation of pipeline installation in the construction process.

[0005] To achieve the above purpose, the technical scheme adopted by the present application is:

[0006] A building water supply and drainage pipeline design method based on BIM technology, comprising:

[0007] Obtaining the expected design requirements of the building, extracting the feature data of the expected building, establishing a three-dimensional model of the expected building based on BIM technology;

[0008] Analyzing the expected design requirements of the building, determining the use function of the building, collecting the building data information of the same use function, and recording as sample building information;

[0009] According to the expected design requirements of the building and the sample building information, expected building water flow information is obtained;

[0010] Data information of common pipe components is collected, noise coefficients of various types of pipes are obtained, pipe models and pipe component models are established through BIM technology, and corresponding pipe model parameters are generated;

[0011] According to the expected building water flow information, the noise coefficients of various types of pipes and the pipe model parameters, the pipe noise performance index is obtained, and the low-noise pipe is determined;

[0012] According to the expected building water flow information, the water flow through the pipe is simulated, the pipe interface stability parameter is obtained, and the pipe interface information is generated;

[0013] Combined with the expected building three-dimensional model, the pipe model corresponding to the low-noise pipe and the pipe interface information, collision detection is carried out, and the available position information and assembly priority of the low-noise pipe are obtained;

[0014] Combined with the pipe interface information and the available position information of the low-noise pipe, the pipe noise of each available position is simulated, and the preferred pipe position information is determined;

[0015] According to the preferred pipe position information, the assembly priority, the low-noise pipe and the pipe interface information, a pipe design scheme is generated.

[0016] Preferably, the expected building water flow information is obtained, specifically including:

[0017] The sample building information is preprocessed to obtain sample size information and sample flow information;

[0018] According to the building water scene, the sample flow information is classified, which can be divided into water supply flow and drainage flow;

[0019] Based on the classification results of the sample flow information, data processing is carried out to obtain the average value, peak value and time distribution information of each type of flow;

[0020] Collect the per capita water flow demand and the historical precipitation data of the expected position of the building to generate rainwater flow data;

[0021] According to the expected design requirements of the building, the expected population data, floor data and area data of the building are analyzed, combined with the sample building information, the floor water flow weight coefficient and the area water flow weight coefficient are obtained;

[0022] Combined with the sample building information and the time distribution information of each type of flow, the seasonal condition water flow weight coefficient and the water flow distribution coefficient of the day cycle time are obtained;

[0023] According to the building expected population data, floor data, area data, seasonal condition water flow weight coefficient and daily time water flow distribution coefficient, the expected building water flow is obtained;

[0024] The average value, peak value, time distribution information of each type of flow and the expected building water flow are collectively referred to as expected building water flow information;

[0025] The specific calculation formula of the expected building water flow is:

[0026] ;

[0027] In the formula, represents the expected building water flow, represents the expected building population, represents the water flow demand per capita, represents the total area of the expected building, represents the area water flow weight coefficient, represents the floor of the expected building, represents the floor water flow weight coefficient, represents the total value of the average value of each type of flow in a year, represents the seasonal condition water flow weight coefficient, represents the total number of water flow distribution points in the daily cycle time, represents the data corresponding to the th water flow distribution point in the daily cycle time, represents the rainwater flow data.

[0028] Preferably, the noise coefficient of each type of pipe is obtained, and the low-noise pipe is determined, specifically including:

[0029] According to the pipe model parameters, the material information and pipe diameter information of each type of pipe are obtained;

[0030] The Reynolds number of water flow under each time state is obtained in combination with the expected building water flow and the daily time water flow distribution coefficient;

[0031] According to the Reynolds number of water flow under each time state, the flow velocity of water under each time state is obtained;

[0032] According to the expected design requirements of the building, the sound absorption coefficient of each type of building material, the preset space size of the water supply and drainage pipe and the building material information are obtained;

[0033] Based on the data information of the pipe assembly, the surface roughness of each type of pipe material is obtained, and the friction factor of each type of pipe is obtained in combination with the pipe diameter information and the Reynolds number of water flow under each time state;

[0034] combined with the preset space size of the water supply and drainage pipeline, the building material information, the friction factor of each type of pipeline and the noise coefficient of each type of pipeline, the noise performance relationship of each pipeline is obtained;

[0035]

[0036] According to the characteristic data of the expected building, the floor height from the ground of each floor is obtained;

[0037] The floor height from the ground of each floor is substituted into the noise performance relationship of each pipeline to obtain and analyze the noise performance of each pipeline at each floor, and the low-noise pipeline at different heights of the building is determined;

[0038] The specific calculation formula of the pipeline friction factor is:

[0039]

[0040] In the formula, represents the friction factor of the pipeline, represents the surface roughness of the pipeline, represents the inner diameter of the pipeline, represents the Reynolds number of the water flow;

[0041] The noise performance relationship of the pipeline is specifically:

[0042]

[0043] In the formula, represents the noise performance index of the pipeline, represents the friction factor of the pipeline, represents the floor height of the pipeline, represents the flow velocity of the water in the pipeline, represents the preset space volume of the pipeline, represents the noise coefficient of the pipeline, represents the sound absorption coefficient of the building material.

[0044] Preferably, the pipeline interface stability parameter is obtained, and the pipeline interface information is generated, specifically including:

[0045] According to the pipeline model corresponding to the low-noise pipeline, the geometric characteristic data of the low-noise pipeline is determined and compared with the pipeline interface to obtain the geometric interface similarity of the pipe fitting;

[0046] The pipeline assembly model parameters are analyzed to obtain the elastic modulus of each material pipe fitting and the outer diameter of each low-noise pipeline;

[0047] Through the BIM software, according to the pipeline assembly data information and the water flow information of the expected building, the speed of the water flow through the pipeline interface is simulated to obtain the pipeline displacement, the pressure borne by the pipeline interface and the flow stability; ​​​

[0048] According to the use function of the building, the structural level priority of the water supply and drainage pipeline is determined, and the weight value corresponding to each structural level is obtained;

[0049] The pipe fitting geometric interface similarity, the pipeline displacement, the weight value corresponding to each structural level, the elastic modulus of each material pipe fitting, the bearing pressure and the flow stability are combined to obtain the pipe fitting stability parameter;

[0050] According to the size of the pipe fitting sealing stability parameter, the preferred pipe fitting is screened out, and the pipe fitting information is generated in combination with the pipe assembly data information;

[0051] The specific calculation formula of the pipe fitting stability parameter is:

[0052]

[0053] In the formula, represents the elastic modulus of the pipe fitting, represents the velocity of the water flow through the pipe fitting, represents the thickness of the pipe fitting, represents the pipeline displacement, represents the geometric similarity of the pipe fitting, represents the bearing pressure of the pipe fitting, represents the flow stability, 、 and respectively represent the weight value corresponding to each structural level, represents the outer diameter of the low-noise pipeline.

[0054] Preferably, the obtaining of the available position information and the assembly priority of the low-noise pipeline specifically includes:

[0055] According to the modeling software and the pipeline model parameters, a boundary warning line is set on the surface of the expected building three-dimensional model and the low-noise pipeline model;

[0056] The expected building three-dimensional model is divided into internal spaces according to floor data, and the low-noise pipeline is arranged in vertical space according to corresponding building height information;

[0057] According to the floor data of the expected building three-dimensional model, the low-noise pipeline model corresponding to the floor is obtained;

[0058] Based on the BIM software, the expected building three-dimensional model and the low-noise pipeline model of the same floor are placed in the same space, the low-noise pipeline model is placed in the expected building three-dimensional model, if the boundary warning line of the expected building three-dimensional model and the low-noise pipeline model intersects or overlaps, the traversal result data is marked as abnormal data, if the boundary warning line of the expected building three-dimensional model and the low-noise pipeline model does not overlap, the traversal result data is marked as available data, the available data traversal result in each space is obtained, and the available position information of the low-noise pipeline of each floor is generated;

[0059] According to the available data and the pipeline interface information, the connection of the pipeline and the pipe is simulated, and the available pipeline connection process information is obtained.

[0060] The installation steps in the available pipeline connection process information are split and reorganized, and the installation steps after reorganization are simulated, the time required for the installation steps after reorganization is obtained, and the assembly priority is determined.

[0061] Preferably, the pipeline noise of each available position is simulated to determine the preferred pipeline position information, specifically including:

[0062] According to the expected building water flow, the average value, the peak value and the time distribution information of each type of flow, the pipeline water flow is simulated.

[0063] According to the pipeline interface information and the available position information of the low-noise pipeline, the overall structural layout of the low-noise pipeline in the building is simulated.

[0064] Through the BIM software, the overall structural layout of the low-noise pipeline in the building and the simulated pipeline water flow are combined to obtain the pipeline noise of the low-noise pipeline in each available position.

[0065] According to the expected design requirements of the building, the internal area of the building is divided, and the pipeline access point of each floor is obtained.

[0066] The preferred pipeline position information is determined by combining the corridor access point of each floor and the pipeline noise of the low-noise pipeline in each available position.

[0067] Further, a building water supply and drainage pipeline design system based on BIM technology is proposed, which is used to realize the design method as described in any one of the above, including:

[0068] The data acquisition module is used to collect common pipeline component data, building data information, surface friction of pipeline material corresponding to each type of pipeline noise coefficient, and transmit the collected data to the data integration module.

[0069] a data integration module, configured to analyze data, including extracting expected building feature data, obtaining expected building water flow information, generating pipe model parameters, connection port matching degrees of each low-noise pipe, and transmitting data to a model generation module, a simulation module, and a conflict detection module;

[0070] a model generation module, configured to generate a corresponding model through BIM technology based on the received data information, perform model parameter labeling, and transmit the generated model data to the simulation module and a pipe arrangement module;

[0071] a simulation module, configured to deduce the received data and obtain all deduction results based on given conditions;

[0072] a pipe arrangement module, configured to generate a reasonable pipe connection layout based on the pipe model and the pipe fitting model transmitted by the model generation module, and transmit data to a scheme design module;

[0073] a conflict detection module, configured to determine whether a conflict occurs between a building and a pipe based on a boundary warning line set on a surface of an expected building three-dimensional model and a low-noise pipe model, mark data results according to a determination result, and transmit data to the scheme design module;

[0074] a scheme design module, configured to analyze the received data and generate a pipe design scheme.

[0075] Optionally, the data integration module specifically includes:

[0076] a first data integration unit, configured to analyze expected design requirements of a building, sample building information, and time distribution information of each type of flow, obtain expected population data, floor data, area data, floor water flow weight coefficients, area water flow weight coefficients, seasonal condition water flow weight coefficients, and water flow distribution coefficients of a day cycle time, and obtain expected building water flow information;

[0077] a second data integration unit, configured to analyze expected design requirements of a building, extract feature data of an expected building, analyze data information of a pipe assembly, generate pipe model parameters, and transmit data to the model generation module;

[0078] a third data integration unit, configured to analyze low-noise pipe and pipe assembly data information, generate connection port matching degrees of each low-noise pipe, and transmit data to the simulation module;

[0079] Optionally, the simulation simulation module, specifically comprising:

[0080] The first simulation simulation module is used for simulating the vertical arrangement of the low-noise pipes corresponding to each floor, simulating the connection of the pipes and the pipe interface, generating a pipe connection flow, and splitting and reorganizing the specific steps of the pipe connection flow, and simulating the connection flow after reorganization.

[0081] The second simulation simulation module is used for simulating the pipe water flow through the expected building water flow information, combining the available position information of the low-noise pipe, simulating the pipe noise generated by the water flow through each available position low-noise pipe, and transmitting the data to the scheme design module.

[0082] Optionally, the conflict detection module specifically comprises:

[0083] The space detection unit is used for analyzing the space data, generating available space region data and pipe occupied space data, judging whether the space data overlaps or intersects, and transmitting the data to the boundary warning unit and the data labeling unit.

[0084] The boundary warning unit is used for processing the received data, marking the outer layer of the space data as boundary data, and assigning the boundary data with a warning attribute, and transmitting the data back to the space detection unit.

[0085] The data labeling unit is used for labeling the data according to the judgment result of the space detection unit.

[0086] If the judgment result is overlap or intersection, the data is labeled as abnormal data.

[0087] If the judgment result is no overlap or intersection, the data is labeled as normal data.

[0088] Compared with the prior art, the beneficial effects of the present application are:

[0089] The application provides a building water supply and drainage pipeline design method and system based on BIM technology, which comprises the following steps: establishing a three-dimensional model of an expected building according to expected design requirements of the building, determining the use function of the building, collecting building data information of the same use function, obtaining water flow information of the expected building, collecting information of various types of pipeline components and pipeline noise coefficients, establishing a pipeline model and a pipe model, obtaining a pipeline noise performance index according to the water flow information of the expected building and the pipeline model parameters, determining a low-noise pipeline, simulating water flow through the pipeline, obtaining pipeline interface stability parameters, generating pipeline interface information, and obtaining available position information and assembly priority of the low-noise pipeline in combination with the three-dimensional model of the expected building and the pipeline model corresponding to the low-noise pipeline, simulating pipeline noise of each available position based on BIM technology, determining optimal pipeline position information, and generating a pipeline design scheme in combination with the optimal pipeline position information, the assembly priority, the low-noise pipeline and the pipeline interface information. BRIEF DESCRIPTION OF DRAWINGS

[0090] Figure 1 A building water supply and drainage pipeline design method based on BIM technology is provided in the application;

[0091] Figure 2 A method for determining a low-noise pipeline is provided in the application;

[0092] Figure 3 A method for obtaining pipeline interface information is provided in the application;

[0093] Figure 4 A method for determining optimal pipeline position information is provided in the application;

[0094] Figure 5 A building water supply and drainage pipeline design system based on BIM technology is provided in the application. DETAILED DESCRIPTION

[0095] The following description is used to disclose the application so that those skilled in the art can implement the application. The preferred embodiments in the following description are only used as examples, and other obvious modifications can be made by those skilled in the art.

[0096] Referring to Figure 1 A building water supply and drainage pipeline design method based on BIM technology is provided, which comprises the following steps:

[0097] Obtaining expected design requirements of a building, extracting feature data of the expected building, and establishing a three-dimensional model of the expected building based on BIM technology;

[0098] Analyzing the expected design requirements of the building, determining the use function of the building, and collecting data information of buildings with the same use function, which is recorded as sample building information;

[0099] Obtaining water flow information of the expected building according to the expected design requirements of the building and the sample building information;

[0100] Collecting data information of common pipe components, obtaining noise coefficients of various types of pipes, establishing pipe models and pipe component models through BIM technology, and generating corresponding pipe model parameters;

[0101] Obtaining pipe noise performance indexes according to the water flow information of the expected building, the noise coefficients of various types of pipes, and the pipe model parameters, and determining low-noise pipes;

[0102] Simulating water flow through the pipes according to the water flow information of the expected building, obtaining pipe interface stability parameters, and generating pipe interface information;

[0103] Performing collision detection by combining the three-dimensional model of the expected building, the pipe model corresponding to the low-noise pipes, and the pipe interface information, and obtaining available position information and assembly priority of the low-noise pipes;

[0104] Simulating pipe noise of each available position by combining the pipe interface information and the available position information of the low-noise pipes, and determining preferred pipe position information;

[0105] Generating a pipe design scheme according to the preferred pipe position information, the assembly priority, the low-noise pipes, and the pipe interface information.

[0106] The scheme collects building data information of the same use function according to the expected design requirements of the building, obtains expected building water flow information, collects information of various types of pipe components and pipe noise coefficients, establishes a pipe model and a pipe fitting model, obtains a pipe noise performance index according to the expected building water flow information and the pipe model parameters, determines a low-noise pipe, simulates water flow through the pipe, obtains pipe interface stability parameters, generates pipe interface information, and combines the expected building three-dimensional model and the pipe model corresponding to the low-noise pipe to obtain available position information and assembly priority of the low-noise pipe. Based on the BIM technology, the pipe noise of each available position is simulated to determine the preferred pipe position information. The pipe design scheme is generated by combining the preferred pipe position information, the assembly priority, the low-noise pipe and the pipe interface information. In this way, the adaptive relationship between the pipe material and the water flow speed and the influence of the pipe preset space size on the noise are fully considered. According to the noise performance relationship of the pipe and in combination with the characteristic data of the expected building, the low-noise pipe can be accurately specified to the building floor. The pipe interface information is obtained through the pipe interface stability parameters, the matching degree of the pipe fitting connection mode is improved, the engineering cycle is shortened, and the construction cost is effectively reduced.

[0107] Further, the expected building water flow information is obtained, specifically including:

[0108] The sample building information is preprocessed to obtain sample size information and sample flow information;

[0109] According to the building water scene, the sample flow information is classified, which can be divided into water supply flow and drainage flow;

[0110] Based on the classification result of the sample flow information, data processing is performed to obtain the average value, peak value and time distribution information of each type of flow;

[0111] Collect per capita water flow demand and historical precipitation data of the expected position of the building to generate rainwater flow data;

[0112] According to the expected design requirements of the building, the expected population data, floor data and area data of the building are analyzed, and the floor water flow weight coefficient and the area water flow weight coefficient are obtained in combination with the sample building information. The floor water flow weight coefficient can be obtained by the proportion of the water flow of each floor to the total water flow in the sample building information. The area water flow weight coefficient can be obtained by the proportion of the water flow of the area of each floor to the total water flow in the sample building information;

[0113] In combination with the sample building information and the time distribution information of each type of flow, the seasonal condition water flow weight coefficient and the water flow distribution coefficient of the day cycle time are obtained;

[0114] According to the building expected population data, floor data, area data, seasonal condition water flow weight coefficient and daily time water flow distribution coefficient, the water flow of the expected building is obtained;

[0115] The average value, peak value, time distribution information and water flow of the expected building of each type of flow are collectively referred to as expected building water flow information;

[0116] The specific calculation formula of the water flow of the expected building is:

[0117] ;

[0118] In the formula, represents the water flow of the expected building, represents the number of people using the expected building, represents the water flow demand per capita, represents the total area of the expected building, represents the area water flow weight coefficient, represents the floor of the expected building, represents the floor water flow weight coefficient, represents the total value of the average value of each type of flow in a year, represents the seasonal condition water flow weight coefficient, represents the total number of water flow distribution points in the daily cycle time, represents the data corresponding to the th water flow distribution point in the daily cycle time, represents the rainwater flow data.

[0119] It can be understood that the water flow in the drainage pipeline includes the water supply and the drainage, wherein the drainage includes the water supply and the precipitation, and the specific water flow of the building is affected by time and seasonal factors. For the water flow data of the expected building, it cannot be directly obtained from historical data, and the building data information of the same use function needs to be analyzed to obtain the floor water flow weight coefficient and the area water flow weight coefficient, and the expected building water flow is obtained by combining the expected design requirements of the building. The sample building information is divided into water supply flow and drainage flow for data processing, and the average value, peak value and time distribution information of each type of flow are obtained. By comparing the data of the drainage flow and the water supply flow, the accuracy of the data is ensured.

[0120] Referring to FIG. 1, Figure 2 the noise coefficient of each type of pipeline is obtained, and the low-noise pipeline is determined, specifically including:

[0121] According to the pipeline model parameters, the material information and the pipeline diameter information of each type of pipeline are obtained;

[0122] Obtaining the Reynolds number of water flow under each time state in combination with the flow parameter of the water supply system and the drainage system of the expected building;

[0123] Obtaining the flow velocity of water under each time state according to the Reynolds number of water flow under each time state;

[0124] Obtaining the sound absorption coefficient of each type of building material, the preset space information of the water supply and drainage pipeline and the building material information according to the expected design requirements of the building;

[0125] Obtaining the surface roughness of each type of pipeline material based on the data information of the pipeline assembly, and obtaining the friction factor of each type of pipeline in combination with the pipeline diameter information and the Reynolds number of water flow under each time state;

[0126] Obtaining the noise performance relationship of each pipeline in combination with the preset space size of the water supply and drainage pipeline, the building material information, the friction factor of each type of pipeline and

[0127]

[0128] Obtaining the floor height from the ground of each floor according to the characteristic data of the expected building;

[0129] Obtaining and analyzing the noise performance of each pipeline at each floor by substituting the floor height from the ground of each floor into the noise performance relationship of each pipeline, and determining the low-noise pipeline of the building at different heights;

[0130] The specific calculation formula of the pipeline friction factor is:

[0131] ;

[0132] In the formula, represents the friction factor of the pipeline, represents the surface roughness of the pipeline, represents the inner diameter of the pipeline, represents the Reynolds number of water flow;

[0133] The noise performance relationship of the pipeline is specifically:

[0134] ;

[0135] In the formula, represents the noise performance index of the pipeline, represents the friction factor of the pipeline, represents the floor height from the ground of the pipeline, represents the flow velocity of water in the pipeline, represents the preset space volume of the pipeline, represents the noise coefficient of the pipeline, represents the sound absorption coefficient of the building material.

[0136] ​It can be understood that the Reynolds number is an index for judging the flow state of the fluid, which is used to describe the flow state of the water flow in the drainage pipeline, the surface roughness of the pipeline represents the unevenness of the inner surface of the pipeline, the pipeline friction factor represents the parameter of the energy level of the water flow in the pipeline when flowing due to collision with the pipeline, and the noise coefficient of the pipeline is a parameter for measuring the ability of the pipeline to receive energy and generate noise. When the water flow in the drainage pipeline is turbulent, the water flow velocity at each time state can be obtained through the water flow calculation formula under the turbulent state. Combined with the surface roughness of each type of pipeline material and the diameter information of the pipeline, the friction factor of each type of pipeline can be obtained. When designing the scheme, the layout space of the pipeline is reserved according to the scale of the building. Through the preset space volume of the pipeline and the sound absorption coefficient of the building material, the propagation degree of the noise generated by the pipeline in the building can be obtained. Combined with the ground height of the pipeline, the flow velocity of the water in the pipeline and the friction factor of the pipeline, a relationship between the noise performance of the pipeline and the ground height of the pipeline can be generated. By analyzing the ground height of each floor, the specific value of the noise performance of each type of pipeline on each floor can be obtained. By comparing the specific value of the noise performance of each type of pipeline on each floor, the pipeline with a small specific value of the noise performance is regarded as a low-noise pipeline of the floor.

[0137] Referring to Figure 3 The pipeline interface stability parameter is obtained, and the pipeline interface information is generated, specifically including:

[0138] According to the pipeline model corresponding to the low-noise pipeline, the geometric feature data of the low-noise pipeline is determined, and the geometric interface similarity of the pipe fitting is obtained by comparing the pipeline interface;

[0139] The elastic modulus of each material pipe fitting and the outer diameter of each low-noise pipeline are obtained by analyzing the pipeline component model parameter;

[0140] Through the BIM software, the speed of the water flow through the pipeline interface is simulated according to the pipeline component data information and the expected building water flow information, and the pipeline displacement, the pressure borne by the pipeline interface and the flow stability are obtained;

[0141] According to the use function of the building, the structure level priority of the water supply and drainage pipeline is determined, and the weight value corresponding to each structure level is obtained;

[0142] The geometric interface similarity of the pipe fitting, the pipeline displacement, the weight value corresponding to each structure level, the elastic modulus of each material pipe fitting, the borne pressure and the flow stability are combined to obtain the pipeline interface stability parameter;

[0143] According to the size of the pipeline interface sealing stability parameter, the preferred pipe fitting is screened out, and the pipeline interface information is generated combined with the pipeline component data information;

[0144] The specific calculation formula of the pipeline interface stability parameter is:

[0145]

[0146] wherein, represents the elastic modulus of the pipe interface, represents the velocity of water flow through the pipe interface, represents the thickness of the pipe interface, represents the pipe displacement amount, represents the geometric similarity of the pipe interface, represents the pressure borne by the pipe interface, represents the flow smoothness, , and respectively represent the weight values corresponding to each structural level, represents the outer diameter of the low-noise pipe.

[0147] It can be understood that the pipe interface stability parameter is an index for evaluating the stability degree of the pipe interface when subjected to water flow impact, the elastic modulus of the pipe interface represents the degree of deformation of the pipe interface due to material limitations when subjected to unit water flow impact, the geometric similarity of the pipe interface can preliminarily confirm the sealing property of the pipe, the elastic modulus of the pipe interface, the pipe displacement, the thickness of the pipe interface and the outer diameter of the low-noise pipe can further determine the sealing property of the pipe interface, according to the use function of the building, the structural level priority of the water supply and drainage pipe can be determined, for residential buildings, the pipe interface sealing property is the first priority, the flow stability is the second priority, and the pipe interface pressure bearing is the third priority, in the residence, once the water supply and drainage pipe leaks, it will directly affect the life of the residents, for example, if the sewage pipe in the bathroom has a poor interface seal, it will produce an odor, and the leaked water may penetrate to the downstairs residents, causing neighbor disputes, the flow stability of the water supply and drainage pipe in the residence mainly affects the comfort of water use and the smoothness of drainage, if the water flow of the water supply pipe is not stable, it will affect the water use experience such as showering and washing, the pressure of the water supply and drainage pipe in the residence is relatively low, mainly the municipal water supply pressure or the secondary water supply pressure of the community, therefore, the importance of the pipe interface pressure bearing is relatively lower than the sealing property and the flow stability, for hospital buildings, the pipe interface sealing property is the first priority, the pipe interface pressure bearing is the second priority, and the flow stability is the third priority, the hospital has very high requirements for the sanitary environment, the leakage of the water supply and drainage pipe may lead to bacterial breeding and pollution of the medical environment, affecting the recovery of patients and the work of medical staff, some special equipment in the hospital requires high water supply pressure, so the pipe interface pressure bearing capacity is also important, for chemical plant buildings, the pipe interface pressure bearing is the first priority, the pipe interface sealing property is the second priority, and the flow stability is the third priority, the pipe in the chemical plant usually transports various high-temperature, high-pressure and corrosive liquids and gases, if the pipe interface cannot bear pressure and breaks, it will cause a large amount of dangerous chemicals to leak, causing serious explosion and poisoning accidents, secondly, many substances transported by the chemical pipe are toxic, corrosive or flammable, and a poor interface seal will cause chemical leakage, environmental pollution, equipment damage, and even endanger the safety of personnel, in chemical production, although the smooth flow of fluid is also important to ensure the stability of the production process, but compared with the pressure bearing capacity and sealing property of the pipe interface, its importance is slightly lower.

[0148] Further, the available position information and assembly priority of the low-noise pipe are obtained, specifically including:

[0149] According to the modeling software and the pipe model parameters, a boundary warning line is set on the surface of the expected building three-dimensional model and the low-noise pipe model;

[0150] The internal space of the expected building three-dimensional model is divided according to the floor data, and the low-noise pipeline is arranged in the vertical space according to the corresponding building height information.

[0151] According to the floor data of the expected building three-dimensional model, the low-noise pipeline model of the corresponding floor is obtained.

[0152] Based on the BIM software, the expected building three-dimensional model and the low-noise pipeline model of the same floor are placed in the same space, and the low-noise pipeline model is placed in the expected building three-dimensional model. If the boundary warning line of the expected building three-dimensional model and the low-noise pipeline model intersects or overlaps, the traversal result data of this time is marked as abnormal data. If the boundary warning line of the expected building three-dimensional model and the low-noise pipeline model does not overlap, the traversal result data of this time is marked as available data. Obtain the available data traversal result in each space, and generate the available position information of the low-noise pipeline of each floor.

[0153] According to the available data and the pipeline interface information, the connection of the pipeline and the pipe is simulated, and the available pipeline connection process information is obtained.

[0154] The installation steps in the available pipeline connection process information are split and reorganized, and the installation steps after reorganization are simulated. The time required for the reorganized installation steps is obtained and the assembly priority is determined.

[0155] It can be understood that due to the difference in types of pipelines between different floors, the connection mode of the pipeline is different. Taking a residential area as an example, the water supply pipe of the low-rise residential area mostly adopts the hot melting connection mode of PP-R pipe. For the water supply pipe of the high-rise residential area, steel-plastic composite pipe is used, which is connected through a groove or flange. The drainage pipe of the low-rise residential area adopts the socket type connection of PVC-U pipe, and a rubber sealing ring is used at the interface to ensure sealing. For the drainage pipe of the high-rise residential area, the flexible connection mode of mechanical cast iron pipe is adopted. Different connection steps will be used according to different connection modes. Through the splitting and reorganization of the connection steps, the simulation of the pipeline layout connection process can be realized.

[0156] Referring to Figure 4 , the pipeline noise of each available position is simulated to determine the preferred pipeline position information, which specifically includes:

[0157] According to the expected building water flow, the average value, the peak value and the time distribution information of each type of flow, the pipeline water flow is simulated.

[0158] According to the pipeline interface information and the available position information of the low-noise pipeline, the overall structural layout of the low-noise pipeline in the building is simulated.

[0159] Through the BIM software, the overall structural layout of the low-noise pipeline in the building and the simulation of the pipeline water flow are combined to obtain the pipeline noise of the low-noise pipeline in each available position.

[0160] According to the expected design requirements of the building, the internal area of the building is divided, and the pipe access points of each floor are obtained;

[0161] The preferred pipe position information is determined by combining the corridor access points of each floor and the pipe noise of the low-noise pipe at each available position.

[0162] It can be understood that by analyzing the expected design requirements of the building, the internal area of the building can be divided, for example, in the residential area, it can be divided into kitchen area, bathroom area and balcony area, the water supply pipe access point of the kitchen area is usually in the wall below the kitchen sink, the drainage pipe access point is usually below the sink drain, the water supply pipe access point of the bathroom area is in the wall near the water equipment such as bathroom sink, toilet, shower nozzle or under the ground, the drainage pipe access point is generally near the water supply pipe, the water supply pipe access point of the balcony area is generally in the wall near the washing machine position, and the drainage pipe access point is generally below the washing machine drain. By combining the position information of the access points of each area and the pipe noise of the low-noise pipe at each available position, and comparing them, the position information of the preferred pipe can be screened out.

[0163] Further, referring to Figure 5 It is shown that a building water supply and drainage pipe design system based on BIM technology is proposed, which is used to realize the design method of any one of the above, including:

[0164] The data acquisition module is used to collect common pipe component data, building data information, surface friction degree corresponding to pipe material, and noise coefficient of each type of pipe, and transmit the collected data to the data integration module;

[0165] The data integration module is used to analyze the data, including extracting the expected building feature data, obtaining the expected building water flow information, generating the pipe model parameters, the connection port matching degree of each low-noise pipe, and transmitting the data to the model generation module, the simulation simulation module and the conflict detection module;

[0166] The model generation module is used to generate the corresponding model by BIM technology through the received data information, at the same time, the model parameter is labeled, and the generated model data is transmitted to the simulation simulation module and the pipe arrangement module;

[0167] The simulation simulation module is used to deduce the received data, and obtain all the deduction results based on the given conditions;

[0168] The pipe arrangement module is used to generate a reasonable pipe connection layout by the pipe model and pipe fitting model transmitted by the model generation module, and transmit the data to the scheme design module;

[0169] a conflict detection module, configured to determine whether a conflict occurs between the building and the pipeline by setting a boundary warning line on a surface of the expected building three-dimensional model and the low-noise pipeline model, mark the data result according to a result of the determination, and transmit the data to the scheme design module;

[0170] a scheme design module, configured to analyze the received data and generate a pipeline design scheme.

[0171] Further, the data integration module specifically comprises:

[0172] a first data integration unit, configured to analyze building expected design requirements, sample building information, and time distribution information of various types of flow, obtain building expected population data, floor data, area data, floor water flow weight coefficients, area water flow weight coefficients, seasonal condition water flow weight coefficients, and water flow distribution coefficients of a day cycle time, and obtain expected building water flow information;

[0173] a second data integration unit, configured to analyze the building expected design requirements, extract feature data of the expected building, analyze data information of the pipeline components, generate pipeline model parameters, and transmit the data to the model generation module;

[0174] a third data integration unit, configured to analyze low-noise pipeline and pipeline component data information, generate connection port matching degrees of various low-noise pipelines, and transmit the data to the simulation simulation module;

[0175] Further, the simulation simulation module specifically comprises:

[0176] a first simulation simulation module, configured to simulate vertical arrangement of low-noise pipelines corresponding to each floor, simulate connection of the pipelines and pipeline interfaces, generate a pipeline connection process, split and reorganize specific steps of the pipeline connection process, and simulate the reorganized connection process;

[0177] a second simulation simulation module, configured to simulate pipeline water flow by using the expected building water flow information, simulate pipeline noise generated by water flow through each available position low-noise pipeline by combining available position information of the low-noise pipeline, and transmit the data to the scheme design module.

[0178] Further, the conflict detection module specifically comprises:

[0179] The space detection unit is used for analyzing the space data, generating available space region data and pipe occupied space data, judging whether the space data overlaps or crosses, and transmitting the data to the boundary warning unit and the data labeling unit;

[0180] The boundary warning unit is used for processing the received data, recording the outer layer of the space data as boundary data, assigning the boundary data with a warning attribute, and transmitting the data back to the space detection unit.

[0181] The data labeling unit is used for labeling the data according to the judgment result of the space detection unit.

[0182] If the judgment result is that the overlap or crossing occurs, the data is labeled as abnormal data.

[0183] If the judgment result is that the overlap or crossing does not occur, the data is labeled as normal data.

[0184] In summary, the application has the advantages that the adaptive relationship between the pipe material and the water flow speed and the influence of the pipe preset space size on the noise are fully considered, the low-noise pipe can be accurately specified to the building floor according to the noise performance relationship of the pipe and combined with the characteristic data of the expected building, the pipe interface information is obtained through the pipe interface stability parameter, the matching degree of the pipe connection mode is improved, and the construction cost is reduced.

[0185] The basic principles, main features and advantages of the application are shown and described above. It should be understood by those skilled in the art that the application is not limited by the above examples, and the above examples and descriptions in the specification are only the principles of the application. Without departing from the spirit and scope of the application, various changes and improvements can be made to the application, and these changes and improvements all fall within the scope of the claimed application. The scope of protection claimed by the application is defined by the appended claims and their equivalents.

Claims

1. A building water supply and drainage pipeline design method based on BIM technology, characterized in that: include: Obtain the expected design requirements of the building, extract the characteristic data of the expected building, and build a three-dimensional model of the expected building based on BIM technology; Analyze the expected design requirements of the building, clarify the building's use function, collect data information of buildings with the same use function, and record it as sample building information; Obtain expected building water flow information based on expected building design requirements and sample building information; Collect data information of common pipeline components, obtain the noise coefficient of various types of pipelines, establish pipeline models and pipe fitting models through BIM technology, and generate pipeline component model parameters; Based on the expected building water flow information, the noise coefficient of each type of pipeline and the pipeline model parameters, the pipeline noise performance index is obtained to determine the low-noise pipeline; Based on the expected building water flow information, simulate the water flow through the pipe, obtain the pipe interface stability parameters, and generate pipe interface information; Combine the expected building 3D model, the corresponding pipe model of the low-noise pipe, and the pipe interface information to perform collision detection and obtain the available position information and assembly priority of the low-noise pipe. Combining pipeline interface information and available low-noise pipeline location information, the pipeline noise at each available location is simulated to determine the optimal pipeline location information; Generate pipeline design plans based on preferred pipeline location information, assembly priority, low-noise pipelines, and pipeline interface information; The obtaining of pipeline interface stability parameters and generating pipeline interface information specifically includes: According to the pipeline model corresponding to the low-noise pipeline, the geometric feature data of the low-noise pipeline is determined and compared with the pipeline interface to obtain the geometric interface similarity of the pipe fitting; Analyze the pipeline component model parameters to obtain the elastic modulus of each material pipe fitting and the outer diameter of each low-noise pipe; Using BIM software, based on the pipeline component data and expected building water flow information, the speed of water flowing through the pipeline interface is simulated to obtain the pipeline displacement, the pressure on the pipeline interface, and the flow smoothness; According to the use function of the building, determine the structural hierarchy priority of the water supply and drainage pipelines, and obtain the corresponding weight value of each structural hierarchy; The pipeline interface stability parameters are obtained by combining the geometric interface similarity of the pipe fittings, the pipe displacement, the weight values ​​corresponding to each structural layer, the elastic modulus of each material pipe fitting, the pressure resistance and the flow smoothness; According to the size of the pipeline interface sealing stability parameters, the optimal pipe fittings are selected and the pipeline interface information is generated by combining the pipeline component data information; The specific calculation formula for pipeline interface stability parameters is: ； Where, represents the elastic modulus of the pipe interface, Indicates the speed of water flowing through the pipe interface. Indicates the thickness of the pipe interface, Indicates the displacement of the pipeline, represents the geometric similarity of the pipeline interface, Indicates that the pipe interface is under pressure. Indicates the smoothness of flow, 、 and Respectively represent the weight values ​​corresponding to each structural level, Indicates the outer diameter of the low-noise pipe.

2. The method for designing building water supply and drainage pipelines based on BIM technology according to claim 1, characterized in that: The obtaining of expected building water flow information specifically includes: Pre-process the sample building information to obtain sample size information and sample flow information; According to the building water scenario, the sample flow information is classified into water supply flow and drainage flow; Based on the classification results of sample traffic information, data processing is performed to obtain the average value, peak value and time distribution information of each type of traffic; Collect historical precipitation data on per capita water flow demand and expected building locations to generate stormwater flow data; According to the expected design requirements of the building, the expected population data, floor data and area data of the building are analyzed, and combined with the sample building information to obtain the floor water flow weight coefficient and area water flow weight coefficient; Combined with the sample building information and the time distribution information of each type of flow, the seasonal condition water flow weight coefficient and the daily cycle time water flow distribution coefficient are obtained; Obtain the expected building water flow based on the building's expected population data, floor data, area data, seasonal water flow weight coefficient, and daily water flow distribution coefficient; The average value, peak value, time distribution information of each type of flow and the expected building water flow are collectively referred to as expected building water flow information; The specific calculation formula for the expected building water flow is: ； Where, represents the expected building water flow, represents the expected number of building users, represents the per capita water flow demand, represents the total area of ​​the expected building, represents the area water flow weight coefficient, represents the floor of the intended building, represents the floor water flow weight coefficient, Indicates the total average value of each type of traffic in a year. represents the seasonal condition water flow weight coefficient, Indicates the total number of water flow distribution points during the daily cycle time, Indicates the first The data corresponding to each water flow distribution point, Represents stormwater flow data.

3. The method for designing building water supply and drainage pipelines based on BIM technology according to claim 2 is characterized in that: The obtaining of the noise coefficients of various types of pipelines and determining the low-noise pipelines specifically includes: According to the pipeline model parameters, obtain the material information and pipeline diameter information of each type of pipeline; Combine the expected building water flow and the water flow distribution coefficient at different times of the day to obtain the Reynolds number of the water flow at each time state; According to the Reynolds number of the water flow at each time state, the flow velocity of the water at each time state is obtained; According to the expected design requirements of the building, obtain the sound absorption coefficient of various types of building materials, the preset space dimensions of water supply and drainage pipes, and building material information; Based on the data information of pipeline components, the surface roughness of each type of pipeline material is obtained. Combined with the pipeline diameter information and the Reynolds number of the water flow at each time state, the friction factor of each type of pipeline is obtained. Combined with the preset space size of water supply and drainage pipes, building material information, friction factors of various types of pipes and The noise coefficient of each type of pipeline, and the noise performance relationship of each pipeline are obtained; Obtain the height of each floor from the ground based on the characteristic data of the expected building; Substitute the height of each floor from the ground into the noise performance equation of each pipeline, obtain and analyze the noise performance of each pipeline on each floor, and determine the low-noise pipelines at different building heights; The specific calculation formula of pipeline friction factor is: ； Where, represents the friction factor of the pipeline, Indicates the surface roughness of the pipe, Indicates the inner diameter of the pipe, Reynolds number represents the water flow; The noise performance relationship of the pipeline is specifically as follows: ； Where, Indicates the noise performance index of the pipeline, represents the friction factor of the pipeline, Indicates the height of the pipeline from the ground. The velocity of water in the pipe. Indicates the preset spatial volume of the pipeline, The noise coefficient of the pipeline is expressed as Indicates the sound absorption coefficient of building materials.

4. The method for designing building water supply and drainage pipelines based on BIM technology according to claim 3 is characterized in that: The obtaining of available position information and assembly priority of the low-noise pipeline specifically includes: According to the modeling software and pipeline model parameters, boundary warning lines are set on the surface of the expected building 3D model and the low-noise pipeline model; Divide the internal space of the expected building 3D model according to floor data, and arrange the low-noise pipes in vertical space according to the corresponding building height information; According to the floor data of the expected building 3D model, a low-noise pipe model of the corresponding floor is obtained; Based on BIM software, the expected building 3D model and the low-noise pipe model on the same floor are placed in the same space. The low-noise pipe model is traversed and placed within the expected building 3D model. If the boundary warning lines of the expected building 3D model and the low-noise pipe model intersect or overlap, the traversal result data is marked as abnormal data. If the boundary warning lines of the expected building 3D model and the low-noise pipe model do not overlap, the traversal result data is marked as available data. The available data traversal results in each space are obtained to generate the available location information of the low-noise pipes on each floor. Based on available data and pipeline interface information, simulate the connection between pipelines and fittings to obtain available pipeline connection process information; The installation steps in the available pipeline connection process information are split and reorganized, and the reorganized installation steps are simulated to obtain the time required for the reorganized installation steps and determine the assembly priority.

5. The method for designing building water supply and drainage pipelines based on BIM technology according to claim 4 is characterized in that: The simulating of pipeline noise at each available position to determine the preferred pipeline position information specifically includes: Simulate pipe water flow based on expected building water flow, average value, peak value and time distribution information of various types of flow; Based on the pipeline interface information and the available location information of the low-noise pipeline, simulate the overall structural layout of the low-noise pipeline in the building; Using BIM software, combined with the overall structural layout of low-noise pipes in the building and simulated pipe water flow, the noise level of low-noise pipes at various available locations is obtained; Divide the building's internal areas according to the expected design requirements and obtain the pipeline access points on each floor; The preferred pipeline location information is determined by combining the corridor access points on each floor and the pipeline noise of the low-noise pipeline at each available location.

6. A building water supply and drainage pipeline design system based on BIM technology, applicable to the design method according to any one of claims 1 to 5, characterized in that: include: A data acquisition module, which is used to collect common pipeline component data, building data information, surface friction corresponding to pipeline materials, and noise coefficients of various types of pipelines, and transmit the collected data to the data integration module; A data integration module is used to analyze the data, including extracting expected building feature data, obtaining expected building water flow information, generating pipeline model parameters, and the matching degree of the connection ports of each low-noise pipeline, and transmitting the data to the model generation module, the simulation module, and the conflict detection module; A model generation module is used to generate a corresponding model using BIM technology based on the received data information, annotate the model parameters, and transmit the generated model data to the simulation module and the pipeline layout module; A simulation module, which is used to deduce the received data and obtain all deduction results based on given conditions; A pipeline layout module, which is used to generate a reasonable pipeline connection layout based on the pipeline model and pipe fitting model transmitted by the model generation module, and transmit the data to the scheme design module; A conflict detection module is used to determine whether there is a conflict between the building and the pipeline by using boundary warning lines set on the surfaces of the expected building 3D model and the low-noise pipeline model, mark the data results according to the judgment results, and transmit the data to the scheme design module; The scheme design module is used to integrate and analyze the received data and generate a pipeline design scheme.

7. A building water supply and drainage pipeline design system based on BIM technology according to claim 6, characterized in that: The data integration module specifically includes: a first data integration unit, configured to analyze expected building design requirements, sample building information, and time distribution information of various types of flow, obtain expected building population data, floor data, area data, floor water flow weight coefficients, area water flow weight coefficients, seasonal condition water flow weight coefficients, and water flow distribution coefficients during a daily cycle, and obtain expected building water flow information; a second data integration unit, the second data integration unit being configured to analyze expected building design requirements, extract characteristic data of the expected building, analyze data information of the pipeline components, generate pipeline model parameters, and transmit the data to the model generation module; The third data integration unit is used to analyze the data information of the low-noise pipeline and the pipeline component, generate the matching degree of the connection port of each low-noise pipeline, and transmit the data to the simulation module.

8. The building water supply and drainage pipeline design system based on BIM technology according to claim 7 is characterized in that: The simulation module specifically includes: a first simulation module, the first simulation module being used to simulate the vertical arrangement of low-noise pipes corresponding to each floor, simulate the connection between the pipes and pipe interfaces, generate an available pipe connection process, split and reorganize specific steps of the available pipe connection process, and simulate the reorganized connection process; The second simulation module is used to simulate the pipeline water flow through the expected building water flow information, combined with the available position information of the low-noise pipe, simulate the pipeline noise generated by the water flow passing through the low-noise pipes at each available position, and transmit the data to the scheme design module.

9. The building water supply and drainage pipeline design system based on BIM technology according to claim 8 is characterized in that: The conflict detection module specifically includes: A space detection unit is used to analyze the spatial data, generate available space area data and pipeline occupied space data, determine whether the spatial data overlaps or intersects, and transmit the data to the boundary warning unit and the data annotation unit; a boundary warning unit, which is used to process the received data, record the outer layer of the spatial data as boundary data, assign a warning attribute to the boundary data, and transmit the data back to the spatial detection unit; The data labeling unit is used to label the data according to the judgment result of the space detection unit. If the judgment result is that overlap or intersection occurs, the data is labeled as abnormal data. If the judgment result is that no overlap or intersection occurs, the data is labeled as normal data.

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