A method for establishing an engineering design quota index query system

Abstract

The application relates to a method for establishing an engineering design quota index query system, and belongs to the technical field of building engineering budgeting, which comprises the following steps: obtaining historical engineering design information, wherein the historical engineering design information comprises engineering design time and basic quota indexes; based on building engineering specification coefficients, specification conversion coefficients and engineering quantity conversion coefficients are obtained by analyzing the historical engineering design information; the basic quota indexes are corrected according to the specification conversion coefficients and the engineering quantity conversion coefficients to obtain corrected quota indexes; and a query system is constructed according to the corrected quota indexes. The application has the effects of improving the convenience, accuracy and timeliness of engineering quota index acquisition.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of construction engineering budget, in particular to a method for establishing an engineering design quota index query system. BACKGROUND

[0002] Engineering quota data is important data in the existing EPC mode engineering management process, and plays an important role in calculating engineering bidding base price and engineering cost control.

[0003] At present, when an engineering contracting unit bids, it makes a design unit rush to produce expanded preliminary design standard drawings or construction drawing standard drawings according to the building scheme or design task book provided by the first party, and calculates the cost according to the physical quantity. This method has a long time cycle and is difficult to complete within the bidding cycle. Even if it is completed, the accuracy is not very high. Alternatively, similar engineering drawings or relevant cost data under the same design condition are found to bid according to the data. This scheme is relatively accurate, but it is difficult to find the same design condition engineering in a short time, especially the sensitive data of engineering cost, which is not willing to be provided by other units.

[0004] According to the related technology in the above, the inventors believe that the engineering contracting unit has the problems of inconvenience, inaccuracy and untimeliness when obtaining the engineering quota index. SUMMARY

[0005] In order to improve the convenience, accuracy and timeliness of obtaining the engineering quota index, the application provides a method for establishing an engineering design quota index query system.

[0006] The method for establishing an engineering design quota index query system provided by the application adopts the following technical scheme:

[0007] A method for establishing an engineering design quota index query system, comprising:

[0008] Obtaining historical engineering design information, the historical engineering design information comprising engineering design time and basic quota index;

[0009] Based on the building engineering specification coefficient, the specification conversion coefficient and the quantity conversion coefficient are obtained by analyzing the historical engineering design information;

[0010] According to the specification conversion coefficient and the quantity conversion coefficient, the basic quota index is corrected to obtain a corrected quota index;

[0011] According to the corrected quota index, a query system is constructed.

[0012] In a preferred example, the application can be further configured to: the historical engineering design information comprises:

[0013] obtain an engineering design time and an engineering design model of a historical engineering design;

[0014] According to the engineering design time, obtain a building engineering specification coefficient corresponding to the engineering design time;

[0015] According to the engineering design model, obtain a basic quota index based on the building engineering specification coefficient, the basic quota index including a steel content index and a concrete content index.

[0016] In a preferred example, the building engineering specification coefficient includes a permanent force sub-item coefficient, a variable force sub-item coefficient, a horizontal seismic action sub-item coefficient, and a vertical seismic action sub-item coefficient.

[0017] In a preferred example, the application can be further configured to: based on the building engineering specification coefficient, the historical engineering design information is analyzed to obtain a specification conversion coefficient and an engineering quantity conversion coefficient, including:

[0018] According to the engineering design time, select historical engineering designs before April 1, 2019;

[0019] According to.

[0020] In a preferred example, the application can be further configured to: based on the building engineering specification coefficient, the historical engineering design information is calculated to obtain a specification conversion coefficient and an engineering quantity conversion coefficient, including:

[0021] According to the permanent force sub-item coefficient and the variable force sub-item coefficient, the basic quota index is corrected to obtain a first corrected engineering design quota index;

[0022] According to the basic quota index and the first corrected engineering design quota index, a specification conversion coefficient K1 is calculated.

[0023] In a preferred example, the application can be further configured to: based on the building engineering specification coefficient, the historical engineering design information is calculated to obtain a specification conversion coefficient and an engineering quantity conversion coefficient, including:

[0024] According to the horizontal seismic action sub-item coefficient and the vertical seismic action sub-item coefficient, the first corrected engineering design quota index is corrected to obtain a second corrected engineering design quota index;

[0025] According to the first corrected engineering design quota index and the second corrected engineering design quota index, a specification conversion coefficient K2 is calculated.

[0026] The application can be further configured in a preferred example as follows: the standard conversion coefficient and the quantity conversion coefficient are calculated according to the historical engineering design information based on the building engineering specification coefficient, including:

[0027] According to the basic quota index, the total quantity data of the historical engineering is obtained;

[0028] According to the total quantity data and the basic quota index, the quantity conversion coefficient k3 is calculated.

[0029] The application can be further configured in a preferred example as follows: before the query system is established according to the engineering quota data, the engineering quota data is classified and counted, and then the query system is established according to the classification rules.

[0030] In summary, the application has at least one of the following beneficial technical effects:

[0031] The reliability unified standard conversion coefficient K1, the seismic general standard conversion coefficient K2 and the quantity conversion coefficient K3 are obtained by analysis, the basic quota index of the historical engineering design is corrected to obtain the corrected quota index conforming to the current building engineering specification, and then the corrected quota index is classified according to multiple standards, and the query system is established according to the classification standard. Through the above scheme, the convenience, accuracy and timeliness of the engineering design quota index query are improved, and the establishment process of the query system is very simple and easy to operate. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 is a flowchart of an engineering design quota index query system establishment method in the embodiments of the application. DETAILED DESCRIPTION

[0033] To make the purposes, technical solutions and advantages of the embodiments of the application clearer, the technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are some but not all of the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.

[0034] The embodiments of the application will be described in further detail below with reference to the drawings in the specification.

[0035] The embodiments of the application disclose an engineering design quota index query system establishment method. Referring to Figure 1 The main process of a method for establishing an engineering design quota index query system is as follows.

[0036] Step S101: Obtain basic quota index data;

[0037] In the embodiments of the present application, the design quota index data of all residential building projects after January 1, 2002 is counted to form the data basis established by the query system, wherein the quota index selects the most widely used engineering steel content per square meter index and concrete content per square meter index; first, the recorded residential building engineering model is collected and all recorded models are converted to PKPM v1.3 version to ensure the uniformity of statistical data and take into account the statistical efficiency; then, the steel content index data and concrete content index data of the engineering building are generated by using the “structure engineering quantity statistics” module in the PKPM software.

[0038] In the collection of recorded models of building design, there are some recorded models of building engineering design missing due to large time span, and only structural construction drawings exist. At this time, the model is reconstructed according to the structural construction drawings, and the steel content index data and concrete content index data of these engineering buildings are generated according to the requirements of “Code for Seismic Design of Buildings” GB50011-2001 by using the “structure engineering quantity statistics” module in the PKPM software.

[0039] Step S102: Based on the building engineering specification coefficient, the specification conversion coefficient and the engineering quantity conversion coefficient are obtained by analyzing the historical engineering design information.

[0040] In step S101, the building engineering design in the nearly 20 years from 2002 to 2022 is statistically sampled, but in such a long time span, many building specification files are updated during this period, and the update of these files will affect the reinforcement results of construction drawings, so that the basic quota index data is not applicable to the current engineering design quota index.

[0041] As can be easily known, the “Unified Standard for Reliability Design of Building Structures” GB50068-2018 was implemented on April 1, 2019, which stipulates that the constant load partial coefficient is adjusted from 1.2 to 1.3, and the live load partial coefficient is adjusted from 1.4 to 1.5, resulting in an 8% increase in load basic combination; the increase in load basic combination will inevitably lead to an increase in the reinforcement of the whole building, and then the steel content index data will also increase.

[0042]

[0043] Table 1-Action partial coefficient of building structure

[0044] Among them, γ G represents the permanent force partial coefficient; γ P represents the pre-stress partial coefficient; γ Q represents the variable force partial coefficient.

[0045] On January 1, 2022, the General Code for Seismic Design of Buildings and Municipal Engineering GB55002-2021 was implemented. In this announcement, the seismic action coefficient is adjusted from 1.3 to 1.4, which means that the seismic action coefficient is increased by 7%. In the current construction process, steel reinforcement plays an important role in building seismic performance. The increase in seismic action will inevitably increase the use of steel and have some impact on the steel content index data.

[0046] Seismic action gamma Eh ]] gamma Ev ]] Only horizontal seismic action is calculated 1.4 0.0 Only vertical seismic action is calculated 0.0 1.4 Both horizontal and vertical seismic action is calculated (horizontal seismic action is dominant) 1.4 0.5 Both horizontal and vertical seismic action is calculated (vertical seismic action is dominant) 0.5 1.4

[0047] Table 2 - Seismic action coefficient

[0048] where γ Eh represents the horizontal seismic action coefficient; γ Ev represents the vertical seismic action coefficient.

[0049] In the embodiments of the present application, in order to ensure that the design quota data is applicable to the current and future projects, the projects before April 1, 2019 need to be multiplied by the specification conversion coefficient K1 to eliminate the influence of the change of the constant live load combination value coefficient and the seismic action coefficient on the basic quota data. The projects from April 1, 2019 to January 1, 2022 need to be multiplied by the specification conversion coefficient K2 to eliminate the influence of the change of the seismic action coefficient on the basic quota data.

[0050] After the implementation of the reliability specification and the general specification, the load basic combination and the seismic action coefficient are increased by 8% and 7% respectively. Since the reinforcement amount is proportional to the load combination, the reinforcement of all structural members determined by the calculation control should be increased by 8% and 7% accordingly. However, most residential buildings are shear wall structures, and only the structural members in the bottom reinforcement zone of shear wall structures are controlled by calculation reinforcement, and other parts and standard layers are controlled by construction reinforcement. Therefore, 1.08 and 1.07 are the upper limits of K1 and K2 values. Directly multiplying the basic quota data by K1 and K2 to adjust the corrected values, and comparing the corrected values with the engineering calculation data, it is found that the error between the corrected values and the actual engineering calculation data is greater than 5%. Therefore, the specific value of the specification adjustment coefficient should be determined by comparing the specific data.

[0051] Now select three projects, with seismic parameters of 6 degrees 0.05g (basic acceleration value) for the first group, 7 degrees 0.1g for the third group, and 8 degrees 0.2g for the second group. The site category is class II. Calculate the reinforcement according to the new and old specifications. According to the comparison of the design quota index, the specification conversion coefficients K1 and K2 are obtained, as shown in Tables 3 and 4.

[0052]

[0053] Table 3 - Specification conversion coefficient K1 statistical table

[0054]

[0055] Table 4 - Specification conversion coefficient K2 statistical table

[0056] According to the final statistical data, it can be concluded that the correlation coefficient change of the two specifications has no effect on the amount of concrete, and the change of the constant active combination value coefficient has a greater impact on the reinforcement result. For projects in the 6-degree and 8-degree seismic fortification intensity area, K1 = 1.02 can be adjusted, and for projects in the 7-degree seismic fortification intensity area, K1 = 1.035 can be adjusted. The change of the earthquake action sub-item coefficient has little effect on projects in the 6-degree and 7-degree seismic fortification intensity area, and K2 = 1 (i.e. no adjustment) can be taken, and it has a certain effect on projects in the 8-degree seismic fortification intensity area, and K2 = 1.01 can be adjusted.

[0057] The software used by general contracting units to calculate engineering quantities is mainly Guanglianda software. In the process of limit data statistics, we found that there is still a large gap between the basic limit data modified by the conversion coefficient of the new and old specifications and the engineering quantity data calculated by the general contracting unit. Through analysis, we found that the main reason is that the structure quantity statistical module of PKPM does not consider the reinforcement and construction measure reinforcement of the secondary structure (partition wall construction column and tie reinforcement, building embedded parts, decorative components, etc. non-structural components) when calculating engineering quantities. The output data of Guanglianda software is the total of primary structure and secondary structure reinforcement, and the measure reinforcement can also be calculated separately, so the error is large. This method modifies the basic limit data by multiplying the engineering quantity conversion coefficient K3, so that the final query index can be directly used by the general contracting unit, which is more suitable for EPC projects.

[0058] Now select a recently completed 8-degree seismic fortification intensity project. The site category is class II. This project is calculated and plotted according to the latest specifications. Now compare the limit data calculated by the PKPM engineering quantity statistical module with the budget Guanglianda calculation data of the general contracting unit to obtain the engineering quantity conversion coefficient K3. Details are shown in Table 5 below.

[0059]

[0060] Table 5 - Engineering quantity conversion coefficient K3 statistical table

[0061] According to the final statistical data, it can be concluded that the correlation coefficient change of the two specifications has no effect on the amount of concrete, and the change of the constant active combination value coefficient has a greater impact on the reinforcement result. For projects in the 6-degree and 8-degree seismic fortification intensity area, K1 = 1.02 can be adjusted, and for projects in the 7-degree seismic fortification intensity area, K1 = 1.035 can be adjusted. The change of the earthquake action sub-item coefficient has little effect on projects in the 6-degree and 7-degree seismic fortification intensity area, and K2 = 1 (i.e. no adjustment) can be taken, and it has a certain effect on projects in the 8-degree seismic fortification intensity area, and K2 = 1.01 can be adjusted.

[0062] Step S103: correcting the basic quota index according to the specification conversion coefficient and the engineering quantity conversion coefficient to obtain a modified quota index.

[0063] According to the derived specification conversion coefficients K1 and K2 and the engineering quantity conversion coefficient K3, the basic design quota data is processed to obtain the final engineering design quota index.

[0064] Specifically, for historical engineering design before April 1, 2019, the basic quota index is multiplied by the specification conversion coefficient K1, the specification conversion coefficient K2 and the engineering quantity conversion coefficient K3 to obtain the modified quota index; for historical engineering design from April 4, 2019 to January 1, 2020, the basic quota index is multiplied by the specification conversion coefficient K2 and the engineering quantity conversion coefficient K3 to obtain the modified quota index; for historical engineering design after January 1, 2020, the basic quota index is multiplied by the engineering quantity conversion coefficient K3 to obtain the modified quota index.

[0065] Step S104: constructing a query system according to the modified quota index.

[0066] The processed final engineering design quota data is classified and counted according to the indexes such as fortification intensity, site category, structure form and structure classification. The counted final engineering design quota data is compiled into engineering design quota index query software which is easy to retrieve according to the above indexes.

[0067] The above description is only the preferred embodiments of the present application and the explanation of the applied technical principles. Those skilled in the art should understand that the disclosed range in the present application is not limited to the technical solutions formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above disclosed concept. For example, the above features are replaced with the technical features disclosed in the present application (but not limited to) having similar functions to form technical solutions.

Claims

1. A method for establishing an engineering design quota index query system, characterized in that, include: Obtain historical engineering design information, including engineering design time and basic quota indicators; Based on the building engineering code coefficients, and according to the historical engineering design information, the code conversion coefficients and engineering quantity conversion coefficients are obtained through analysis. Based on the aforementioned standard conversion coefficient and engineering quantity conversion coefficient, the basic quota index is corrected to obtain the corrected quota index; Based on the aforementioned revised quota indicators, a query system is constructed; The building engineering code coefficients include partial factors for permanent forces, partial factors for variable forces, partial factors for horizontal seismic forces, and partial factors for vertical seismic forces. Both the permanent force partial factor and the variable force partial factor are based on the "Unified Standard for Reliability Design of Building Structures" implemented on April 1, 2019. The partial factors for horizontal seismic action and the partial factors for vertical seismic action are both based on the "General Code for Seismic Resistance of Buildings and Municipal Engineering" implemented on January 1, 2022. The conversion coefficients for building engineering specifications and the conversion coefficients for engineering quantities obtained by analyzing the historical engineering design information include: Based on the aforementioned engineering design time, historical engineering designs are divided into categories; Historical engineering designs prior to April 1, 2019, are classified as Category I historical engineering designs. Historical engineering designs from April 1, 2019 to January 1, 2022 are classified as Category II historical engineering designs. Historical engineering designs completed after January 1, 2022, are classified as Category III historical engineering designs. Based on the partial factors of permanent forces and variable forces, the basic quota index is modified to obtain the first modified engineering design quota index. The standard conversion coefficient K1 is calculated based on the ratio of the basic quota index and the first revised engineering design quota index. Based on the horizontal seismic action partial factor and the vertical seismic action partial factor, the first revised engineering design limit index is revised to obtain the second revised engineering design limit index. The specification conversion coefficient K2 is calculated based on the ratio of the first revised engineering design limit index to the second revised engineering design limit index. Based on the aforementioned basic quota indicators, obtain the total engineering volume data of the historical projects; Based on the ratio of the total project quantity data to the basic quota index, the project quantity conversion coefficient K3 is calculated. The process of correcting the basic quota index based on the standard conversion factor and the engineering quantity conversion factor to obtain the corrected quota index includes: For historical engineering designs prior to April 1, 2019, the basic quota index is multiplied by the standard conversion coefficient K1, standard conversion coefficient K2, and quantity conversion coefficient K3 to obtain the revised quota index; for historical engineering designs from April 4, 2019 to January 1, 2020, the basic quota index is multiplied by the standard conversion coefficient K2 and quantity conversion coefficient K3 to obtain the revised quota index; for historical engineering designs after January 1, 2020, the basic quota index is multiplied by the quantity conversion coefficient K3 to obtain the revised quota index.

2. The method for establishing an engineering design quota index query system according to claim 1, characterized in that: The acquisition of historical engineering design information includes: Obtain the engineering design time and engineering design model of historical engineering designs; Based on the engineering design time, obtain the building engineering specification coefficient corresponding to the engineering design time; Based on the building engineering code coefficient corresponding to the engineering design time, the basic quota index is obtained according to the engineering design model. The basic quota index includes the steel content index and the concrete content index.

3. The method for establishing an engineering design quota index query system according to claim 1, characterized in that: Before establishing a query system based on the modified quota indicators, the process includes classifying and statistically analyzing the modified quota indicators, and then establishing a query system based on the classification rules.

Images