Continuous beam bridge deck system BIM design method considering contact net stand column foundation

Abstract

The invention discloses a continuous beam bridge deck system BIM (Building Information Modeling) design method considering an overhead line system upright post foundation, which comprises the following steps of: classifying bridge deck systems, and creating a bridge deck system cross section size database; creating a bridge deck system cross section curve modeling function library; analyzing continuous girder BIM model information, and generating a longitudinal overall arrangement range of a bridge deck system; analyzing overhead line system stand column basic arrangement information, and generating a bridge deck system subsection mileage range structural body array; and instantiating various bridge deck system sub-components within the mileage range of the bridge deck system sub-sections to complete bridge deck system BIM design. According to the method, continuous beam bridge deck system BIM design considering the catenary stand column foundation is achieved, the complex bridge deck system BIM design is finally completed according to longitudinal and transverse data by decomposing cross section information of different types of sub-components of the bridge deck system and segmenting a common section and a catenary stand column foundation section longitudinal section, the bridge engineering informatization level is greatly improved, and the construction period is shortened. And the method has obvious popularization and application values.

Description

Technical Field

[0001] The invention belongs to the field of building technology, and in particular relates to a BIM design method for a continuous beam bridge deck system taking into account a contact network column foundation. Background Art

[0002] Building Information Modeling is a new tool for architecture, engineering and civil engineering. Building Information Modeling (BIM) is defined as an architectural or construction engineering information model that consists of complete and sufficient information to support lifecycle management and can be directly interpreted by computer applications. In short, it is the lifecycle management of the building environment supported by digital technology.

[0003] In the BIM design of bridge engineering, the BIM design of the bridge deck system is crucial. At the same time, in the context of infrastructure information construction management and intelligent operation and maintenance management, the BIM design results of the bridge deck system can also provide information models for the construction and operation and maintenance stages. The bridge deck system is divided into a simply supported beam bridge deck system and a continuous beam bridge deck system according to the type of main structure to which it is attached. The former is arranged along a straight line, and there is only one single-side contact network column on a simply supported beam, so the BIM design is relatively simple. However, the latter is arranged along a curve, and the arrangement of the single-side contact network column depends on the actual design situation, so the BIM design is difficult. Therefore, in order to complete the BIM design of the continuous beam bridge deck system, it is necessary to simultaneously consider the distribution law of the longitudinal contact network column foundation section and the non-contact network column foundation section, as well as the composition of various substructure topologies in the horizontal direction, and develop a BIM design method for the continuous beam bridge deck system suitable for spatial curve arrangement to promote the development of BIM technology for bridge engineering. Summary of the invention

[0004] The present invention is proposed to solve the problems existing in the prior art, and its purpose is to provide a BIM design method for a continuous beam bridge deck system taking into account the contact network column foundation.

[0005] The technical solution of the present invention is: a BIM design method for a continuous beam bridge deck system considering the contact network column foundation, comprising the following steps: A. Classify the bridge deck system and create a database of bridge deck cross-sectional dimensions; B. Create a modeling function library for the cross-section curve group of the bridge deck system; C. Analyze the BIM model information of the continuous beam main beam and generate the overall longitudinal layout range of the bridge deck system; D. Analyze the contact network column foundation layout information and generate the bridge deck system sub-section mileage range structure array; E. Instantiate various bridge deck system components within the mileage range of the bridge deck system section to complete the BIM design of the bridge deck system.

[0006] Furthermore, in step A, the bridge deck system is classified, and the specific process is as follows: Firstly, the cross section of the continuous beam bridge deck is divided into two parts: the cross section of the contact network column foundation position and the cross section of the non-contact network column foundation position; Then, four closed curve groups are used to express the cross section of the non-contact network column foundation position. The four closed curve groups represent the four types of bridge deck substructures: protective wall, vertical wall, shield, and cover. Then, five closed curve groups are used to express the cross section of the contact network column foundation position. The five closed curve groups represent five types of bridge deck substructures, namely, protective wall, vertical wall, shield, cover plate, and contact network column foundation. Finally, the continuous beam bridge deck system is divided into different types according to the different arrangements of the bridge deck substructures.

[0007] Furthermore, in step A, a database of bridge deck cross-section dimensions is created. The specific process is as follows: Firstly, for each type of continuous beam bridge deck system, the key dimension parameters of the cross section of the contact network column foundation location and the cross section of the non-contact network column foundation location are identified; Then, multiple numerical combinations are assigned to the key cross-sectional dimension parameters of different types of continuous beam bridge deck systems to form a cross-sectional dimension database of the bridge deck system.

[0008] Furthermore, step B creates a bridge deck cross-section curve group modeling function library, and the specific process is as follows: First, for each type of continuous beam bridge deck system, a modeling function is created; Then, the modeling function takes the key dimensions of the bridge deck cross section as input and generates nine closed curve groups according to the geometric topological construction characteristics of various bridge deck substructures; Finally, each closed curve in the closed curve group includes a longitudinal position attribute and a transverse position attribute.

[0009] Furthermore, step C analyzes the BIM model information of the continuous beam main beam to generate the overall longitudinal layout range of the bridge deck system. The specific process is as follows: First, when the main structure of a continuous beam is composed of a BIM model object, the start mileage and end mileage attribute values ​​of the current continuous beam are extracted from the BIM model object; Then, when the main structure of a continuous beam is composed of several segment BIM model objects, the start and end mileage attribute values ​​are extracted from the first and last segment BIM model objects at the same time, and the minimum and maximum values ​​are screened out as the start mileage and end mileage of the current continuous beam; Finally, the above starting mileage and ending mileage are used as the overall longitudinal layout range of the bridge deck system.

[0010] Furthermore, in step D, the mileage range of the bridge deck system sub-section consists of two parts: the mileage range of the contact network column foundation sub-section and the mileage range of the non-contact network column foundation sub-section.

[0011] Furthermore, in step D, for the mileage range of the contact network column foundation subsection, the specific process is as follows: First, the starting mileage of the longitudinal general layout range of the bridge deck system generated in step C is used as input; Then, according to the longitudinal distance of each overhead contact column foundation relative to the starting end of the continuous beam and taking into account the longitudinal length of the overhead contact column foundation, the longitudinal starting mileage and ending mileage of each overhead contact column foundation are calculated; Then, the above process is repeated for all overhead line column foundations; Finally, a structure array of the mileage range of all contact network column foundation sub-sections is formed.

[0012] Furthermore, in step D, for the mileage range of the non-contact network column foundation sub-section, the specific process is as follows: First, the starting mileage and ending mileage of the longitudinal general layout range of the bridge deck system generated in step C are used as input; Then, the mileage range of all contact network column foundation subsections is deducted to obtain the mileage range of all non-contact network column foundation subsections; Finally, the number of non-contact network column foundation sub-sections is one more than the number of contact network column foundation sub-sections.

[0013] Furthermore, step E instantiates various bridge deck sub-components within the bridge deck sub-section mileage range to complete the bridge deck BIM design. The specific process is as follows: First, a bridge deck type is selected, and a cross-sectional dimension value array matching the current bridge deck type is selected from the bridge deck cross-sectional dimension database created in step A; Then, extract the curve group modeling function that matches the current bridge deck type from the bridge deck cross-section curve group modeling function library created in step B, input the selected dimension value array into the extracted curve group modeling function, and generate a closed curve group; Finally, various bridge deck system sub-components are instantiated within the mileage range of the contact network column foundation sub-section and the non-contact network column foundation sub-section generated in step D to complete the BIM design of the bridge deck system.

[0014] The beneficial effects of the present invention are as follows: In the BIM design process of a continuous beam bridge deck system, the present invention classifies the bridge deck system, creates a bridge deck system cross-sectional dimension database, creates a bridge deck system cross-sectional curve group modeling function library, parses the BIM model information of the continuous beam main beam, generates the longitudinal overall layout range of the bridge deck system, parses the contact network column foundation layout information, generates a bridge deck system sub-section mileage range structure array, instantiates various types of bridge deck system sub-components within the bridge deck system sub-section mileage range, and completes the bridge deck system BIM design.

[0015] The present invention realizes the BIM design of the continuous beam bridge deck system taking into account the contact network column foundation. By decomposing the cross-sectional information of different types of sub-components of the bridge deck system and dividing the longitudinal sections of the common section and the contact network column foundation section, the BIM design of the complex bridge deck system is finally completed according to the longitudinal and transverse data, which greatly improves the information level of bridge engineering and has obvious promotion and application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a flow chart of the method of the present invention. DETAILED DESCRIPTION

[0017] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and embodiments: like Figure 1 As shown, a BIM design method for a continuous beam bridge deck system considering the contact network column foundation includes the following steps: A. Classify the bridge deck system and create a database of bridge deck cross-sectional dimensions; B. Create a modeling function library for the cross-section curve group of the bridge deck system; C. Analyze the BIM model information of the continuous beam main beam and generate the overall longitudinal layout range of the bridge deck system; D. Analyze the contact network column foundation layout information and generate the bridge deck system sub-section mileage range structure array; E. Instantiate various bridge deck system components within the mileage range of the bridge deck system section to complete the BIM design of the bridge deck system.

[0018] In step A, the bridge deck system is classified. The specific process is as follows: Firstly, the cross section of the continuous beam bridge deck is divided into two parts: the cross section of the contact network column foundation position and the cross section of the non-contact network column foundation position; Then, four closed curve groups are used to express the cross section of the non-contact network column foundation position. The four closed curve groups represent the four types of bridge deck substructures: protective wall, vertical wall, shield, and cover. Then, five closed curve groups are used to express the cross section of the contact network column foundation position. The five closed curve groups represent five types of bridge deck substructures, namely, protective wall, vertical wall, shield, cover plate, and contact network column foundation. Finally, the continuous beam bridge deck system is divided into different types according to the different arrangements of the bridge deck substructures.

[0019] In step A, a database of bridge deck cross-section dimensions is created. The specific process is as follows: Firstly, for each type of continuous beam bridge deck system, the key dimension parameters of the cross section of the contact network column foundation location and the cross section of the non-contact network column foundation location are identified; Then, multiple numerical combinations are assigned to the key cross-sectional dimension parameters of different types of continuous beam bridge deck systems to form a cross-sectional dimension database of the bridge deck system.

[0020] Step B creates a bridge deck cross-section curve group modeling function library. The specific process is as follows: First, for each type of continuous beam bridge deck system, a modeling function is created; Then, the modeling function takes the key dimensions of the bridge deck cross section as input and generates nine closed curve groups according to the geometric topological construction characteristics of various bridge deck substructures; Finally, each closed curve in the closed curve group includes a longitudinal position attribute and a transverse position attribute.

[0021] Step C analyzes the BIM model information of the continuous beam main beam to generate the overall longitudinal layout range of the bridge deck system. The specific process is as follows: First, when the main structure of a continuous beam is composed of a BIM model object, the start mileage and end mileage attribute values ​​of the current continuous beam are extracted from the BIM model object; Then, when the main structure of a continuous beam is composed of several segment BIM model objects, the start and end mileage attribute values ​​are extracted from the first and last segment BIM model objects at the same time, and the minimum and maximum values ​​are screened out as the start mileage and end mileage of the current continuous beam; Finally, the above starting mileage and ending mileage are used as the overall longitudinal layout range of the bridge deck system.

[0022] In step D, the mileage range of the bridge deck system sub-section consists of two parts: the mileage range of the contact network column foundation sub-section and the mileage range of the non-contact network column foundation sub-section.

[0023] In step D, for the mileage range of the contact network column foundation subsection, the specific process is as follows: First, the starting mileage of the longitudinal general layout range of the bridge deck system generated in step C is used as input; Then, according to the longitudinal distance of each overhead contact column foundation relative to the starting end of the continuous beam and taking into account the longitudinal length of the overhead contact column foundation, the longitudinal starting mileage and ending mileage of each overhead contact column foundation are calculated; Then, the above process is repeated for all overhead line column foundations; Finally, a structure array of the mileage range of all contact network column foundation sub-sections is formed.

[0024] In step D, for the mileage range of the non-contact network column foundation sub-section, the specific process is as follows: First, the starting mileage and ending mileage of the longitudinal general layout range of the bridge deck system generated in step C are used as input; Then, the mileage range of all contact network column foundation subsections is deducted to obtain the mileage range of all non-contact network column foundation subsections; Finally, the number of non-contact network column foundation sub-sections is one more than the number of contact network column foundation sub-sections.

[0025] Step E instantiates various bridge deck sub-components within the mileage range of the bridge deck sub-section to complete the bridge deck BIM design. The specific process is as follows: First, a bridge deck type is selected, and a cross-sectional dimension value array matching the current bridge deck type is selected from the bridge deck cross-sectional dimension database created in step A; Then, extract the curve group modeling function that matches the current bridge deck type from the bridge deck cross-section curve group modeling function library created in step B, input the selected dimension value array into the extracted curve group modeling function, and generate a closed curve group; Finally, various bridge deck system sub-components are instantiated within the mileage range of the contact network column foundation sub-section and the non-contact network column foundation sub-section generated in step D to complete the BIM design of the bridge deck system.

[0026] Specifically, in step A, a closed curve group consists of closed curves whose number is from 0 to infinity.

[0027] Specifically, in step A, whether for the cross-section of the contact network column foundation position or the cross-section of the non-contact network column foundation position, if the topological relationship between the closed curve groups of different types of bridge deck substructures changes, or the geometric topological mode of the closed curve group of a certain type of bridge deck substructure itself changes, the bridge deck system will be divided into different types.

[0028] Specifically, the longitudinal position attribute in step B is used to distinguish whether the current closed curve is located at the contact network column foundation position or the non-contact network column foundation position; the transverse position attribute is used to distinguish whether the current closed curve belongs to one of the five substructures of protective wall, vertical wall, shield, cover plate, and contact network column foundation.

[0029] Specifically, step E completes the BIM modeling of the bridge deck system through two cycles. The specific process is as follows: First, the first layer of loop is performed within the closed curve group. For each closed curve, the longitudinal position attribute value is extracted to determine whether it should be arranged in the contact network column foundation section or the non-contact network column foundation section. The transverse position attribute value is extracted to determine the type of the current sub-component. Then, the second loop is performed in the sub-section mileage range structure array. For each structure, the closed curve obtained by the first loop screening is stretched along the spatial line position within the mileage range to obtain a sub-component BIM model. Finally, at the end of the two-layer cycle, the BIM modeling of all types of sub-components of the bridge deck is completed.

[0030] In the BIM design process of a continuous beam bridge deck system, the present invention classifies the bridge deck system, creates a bridge deck system cross-sectional dimension database, creates a bridge deck system cross-sectional curve group modeling function library, parses the BIM model information of the continuous beam main beam, generates the longitudinal overall layout range of the bridge deck system, parses the contact network column foundation layout information, generates a bridge deck system sub-section mileage range structure array, instantiates various types of bridge deck system sub-components within the bridge deck system sub-section mileage range, and completes the bridge deck system BIM design.

[0031] The present invention realizes the BIM design of the continuous beam bridge deck system taking into account the contact network column foundation. By decomposing the cross-sectional information of different types of sub-components of the bridge deck system and dividing the longitudinal sections of the common section and the contact network column foundation section, the BIM design of the complex bridge deck system is finally completed according to the longitudinal and transverse data, which greatly improves the information level of bridge engineering and has obvious promotion and application value.

Claims

1. A BIM design method for a continuous beam bridge deck system considering the foundation of a catenary column, characterized by: The following steps are involved: A. Classify the bridge deck system and create a database of bridge deck cross-sectional dimensions; B. Create a modeling function library for the cross-section curve group of the bridge deck system; C. Analyze the BIM model information of the continuous beam main beam and generate the overall longitudinal layout range of the bridge deck system; D. Analyze the contact network column foundation layout information and generate the bridge deck system sub-section mileage range structure array; E. Instantiate various bridge deck system components within the mileage range of the bridge deck system section to complete the BIM design of the bridge deck system.

2. The BIM design method for a continuous beam bridge deck system considering the contact network column foundation according to claim 1 is characterized in that: In step A, the bridge deck system is classified. The specific process is as follows: Firstly, the cross section of the continuous beam bridge deck is divided into two parts: the cross section of the contact network column foundation position and the cross section of the non-contact network column foundation position; Then, four closed curve groups are used to express the cross section of the non-contact network column foundation position. The four closed curve groups represent the four types of bridge deck substructures: protective wall, vertical wall, shield, and cover. Then, five closed curve groups are used to express the cross section of the contact network column foundation position. The five closed curve groups represent five types of bridge deck substructures, namely, protective wall, vertical wall, shield, cover plate, and contact network column foundation. Finally, the continuous beam bridge deck system is divided into different types according to the different arrangements of the bridge deck substructures.

3. The BIM design method for a continuous beam bridge deck system considering the contact network column foundation according to claim 1 is characterized in that: In step A, a database of bridge deck cross-section dimensions is created. The specific process is as follows: Firstly, for each type of continuous beam bridge deck system, the key dimension parameters of the cross section of the contact network column foundation location and the cross section of the non-contact network column foundation location are identified; Then, multiple numerical combinations are assigned to the key cross-sectional dimension parameters of different types of continuous beam bridge deck systems to form a cross-sectional dimension database of the bridge deck system.

4. The BIM design method for a continuous beam bridge deck system considering the contact network column foundation according to claim 1 is characterized in that: Step B creates a bridge deck cross-section curve group modeling function library. The specific process is as follows: First, for each type of continuous beam bridge deck system, a modeling function is created; Then, the modeling function takes the key dimensions of the bridge deck cross section as input and generates nine closed curve groups according to the geometric topological construction characteristics of various bridge deck substructures; Finally, each closed curve in the closed curve group includes a longitudinal position attribute and a transverse position attribute.

5. The BIM design method for continuous beam bridge deck system considering the contact network column foundation according to claim 1 is characterized by: Step C analyzes the BIM model information of the continuous beam main beam to generate the overall longitudinal layout range of the bridge deck system. The specific process is as follows: First, when the main structure of a continuous beam is composed of a BIM model object, the start mileage and end mileage attribute values ​​of the current continuous beam are extracted from the BIM model object; Then, when the main structure of a continuous beam is composed of several segment BIM model objects, the start and end mileage attribute values ​​are extracted from the first and last segment BIM model objects at the same time, and the minimum and maximum values ​​are screened out as the start mileage and end mileage of the current continuous beam; Finally, the above starting mileage and ending mileage are used as the overall longitudinal layout range of the bridge deck system.

6. The BIM design method for a continuous beam bridge deck system considering the contact network column foundation according to claim 1 is characterized in that: In step D, the mileage range of the bridge deck system sub-section consists of two parts: the mileage range of the contact network column foundation sub-section and the mileage range of the non-contact network column foundation sub-section.

7. A BIM design method for a continuous beam bridge deck system considering the contact network column foundation according to claim 6, characterized in that: In step D, for the mileage range of the contact network column foundation subsection, the specific process is as follows: First, the starting mileage of the longitudinal general layout range of the bridge deck system generated in step C is used as input; Then, according to the longitudinal distance of each overhead contact column foundation relative to the starting end of the continuous beam and taking into account the longitudinal length of the overhead contact column foundation, the longitudinal starting mileage and ending mileage of each overhead contact column foundation are calculated; Then, the above process is repeated for all overhead line column foundations; Finally, a structure array of the mileage range of all contact network column foundation sub-sections is formed.

8. The BIM design method for continuous beam bridge deck system considering the contact network column foundation according to claim 7 is characterized by: In step D, for the mileage range of the non-contact network column foundation sub-section, the specific process is as follows: First, the starting mileage and ending mileage of the longitudinal general layout range of the bridge deck system generated in step C are used as input; Then, the mileage range of all contact network column foundation subsections is deducted to obtain the mileage range of all non-contact network column foundation subsections; Finally, the number of non-contact network column foundation sub-sections is one more than the number of contact network column foundation sub-sections.

9. The BIM design method for continuous beam bridge deck system considering the contact network column foundation according to claim 1 is characterized by: Step E instantiates various bridge deck sub-components within the mileage range of the bridge deck sub-section to complete the bridge deck BIM design. The specific process is as follows: First, a bridge deck type is selected, and a cross-sectional dimension value array matching the current bridge deck type is selected from the bridge deck cross-sectional dimension database created in step A; Then, extract the curve group modeling function that matches the current bridge deck type from the bridge deck cross-section curve group modeling function library created in step B, input the selected dimension value array into the extracted curve group modeling function, and generate a closed curve group; Finally, various bridge deck system sub-components are instantiated within the mileage range of the contact network column foundation sub-section and the non-contact network column foundation sub-section generated in step D to complete the BIM design of the bridge deck system.

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