Method for predicting material demand quantity of railway construction engineering by combining design and construction

Abstract

The invention provides a method for predicting the material demand quantity of a railway construction project by combining design and construction. The method comprises the following steps: obtaining a material net demand quantity according to a design drawing of a railway construction project; the set material loss rate comprises a concrete loss rate and other material loss rates, and the concrete loss rate is obtained according to the actual loss rate of the construction site materials of the railway construction project; obtaining a concrete mix proportion according to an actual mix proportion scheme of a concrete mixing station of the railway construction project; and calculating a material consumption quota according to the net material demand quantity, the material loss rate and the concrete mix proportion, and calculating a material demand quantity according to the construction progress quantity of the railway construction project and the material consumption quota. According to the method, the design drawing is combined with the actual situation of the construction site, the actual situation of a specific engineering project under specific construction teams and specific construction conditions is reflected, and the calculation result of the railway construction engineering material demand quantity is more accurate.

Description

Technical Field

[0001] The present invention relates to the technical field of construction engineering material demand prediction, and in particular to a method for predicting railway construction engineering material demand by combining design with construction. Background Art

[0002] In order to ensure the smooth implementation of railway projects, the construction units and construction units must regularly forecast the supply and demand of major materials to replenish the materials needed for the next stage of construction in a timely manner. The work of forecasting the demand for materials in railway construction projects includes: analysis of the quantity of materials in design drawings, analysis of design budget documents, statistical analysis of material usage at the construction site, and quota compilation.

[0003] At present, the existing methods for predicting the demand for railway construction materials include:

[0004] The first is the empirical method, which makes a rough estimate based on the engineering quantity on the design drawings and the construction personnel's experience loss coefficient. The disadvantages of this method include large deviations, and the degree of error varies from person to person and from project to project, making it difficult to control;

[0005] The second is the approximate method, which refers to the statistical quantity of materials in the design budget document. The disadvantages of this method include: based on the material consumption in the railway project budget quota, the quota adopts the construction material loss rate that reflects the national average level, which cannot reflect the technical level of the construction team at the specific work site and the material loss changes caused by special geological conditions, and there are large errors. In addition, it cannot reflect the actual mix ratio of concrete at the construction site, and the types of concrete admixtures are completely inconsistent. Summary of the invention

[0006] The embodiment of the present invention provides a method for predicting the demand for railway construction materials by combining design and construction, so as to accurately predict the demand for railway construction materials.

[0007] In order to achieve the above object, the present invention adopts the following technical scheme.

[0008] A method for predicting the demand for railway construction materials by combining design and construction, comprising:

[0009] Obtain the net material requirements based on the design drawings of the railway construction project;

[0010] The material loss rate is set to include concrete loss rate and other material loss rates. The concrete loss rate is obtained based on the actual loss rate of materials at the construction site of the railway construction project.

[0011] Obtain the concrete mix ratio according to the actual mix ratio plan of the concrete mixing plant of the railway construction project;

[0012] The material consumption quota is calculated based on the net material demand, material loss rate and concrete mix ratio, and the material demand is calculated based on the construction progress quantity of the railway construction project and the material consumption quota.

[0013] Preferably, the method of obtaining the net material demand according to the design drawings of the railway construction project includes:

[0014] Representative construction sites of the railway construction project are selected according to the geological conditions, and the net material demand of various materials at each construction site is obtained according to the design drawings of the railway construction project.

[0015] Preferably, the set material loss rate includes two types: concrete loss rate and other material loss rates. The concrete loss rate is obtained according to the actual loss rate of materials at the construction site of the railway construction project, including:

[0016] The material loss rate is set to include two types: concrete loss rate and other material loss rate. The concrete loss rate is obtained based on the actual concrete loss rate at the construction site of the railway construction project, and the other material loss rate adopts the loss rate specified in the cost standard document.

[0017] Preferably, the material consumption quota is calculated according to the net material demand, material loss rate and concrete mix ratio, including:

[0018] The material consumption quota reflects the various types of materials and their consumption required to complete each unit of construction work:

[0019] Material consumption i = net material demand i*(1+material loss rate i / 100)

[0020] Where i represents the main non-concrete material;

[0021] Concrete consumption h = Net concrete demand h *(1+concrete loss factor h / 100)

[0022] Where h represents shotcrete or cast-in-place concrete of different strength grades;

[0023] Detailed consumption of concrete k，j =Concrete mix ratio k，j *Concrete consumption h

[0024] Where k represents shotcrete or cast-in-place concrete of different strength grades, j represents the detailed materials in the concrete mix, which include cement, fly ash, sand and gravel, and admixtures;

[0025] According to the project content corresponding to a certain material consumption quota, find the project budget quota and calculate the consumption of explosives, gasoline and diesel according to the unit project volume.

[0026] Preferably, the material demand is calculated according to the construction progress of the railway construction project and the material consumption quota, including:

[0027] The formula for calculating material demand is as follows:

[0028] Material demand m =Material consumption quota m * Project progress quantity

[0029] Here, m represents the detailed materials in the railway construction project, such as steel bars, steel sections, anchor rods, waterproof sheets, waterstops, explosives, gasoline and diesel, and concrete.

[0030] It can be seen from the technical solutions provided by the above-mentioned embodiments of the present invention that the present invention combines the design drawings with the actual conditions of the construction site, reflects the actual conditions of a specific engineering project under a specific construction team and specific construction conditions, and the calculation results of the demand for materials for railway construction projects are more accurate.

[0031] Additional aspects and advantages of the present invention will be given in part in the following description, which will become obvious from the following description, or may be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0033] Figure 1 A processing flow chart of a method for predicting the demand for railway construction materials by combining design and construction provided by an embodiment of the present invention;

[0034] Figure 2 A flow chart of an algorithm for material consumption quota provided in an embodiment of the present invention;

[0035] Figure 3 A calculation model diagram of explosives and oil provided by an embodiment of the present invention;

[0036] Figure 4 A schematic diagram of a calculation example of a material demand provided in an embodiment of the present invention;

[0037] Figure 5A diagram of a material demand calculation operation interface provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0038] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be interpreted as limiting the present invention.

[0039] It will be understood by those skilled in the art that, unless expressly stated, the singular forms "one", "said", and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present invention refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof. It should be understood that when we refer to an element as being "connected" or "coupled" to another element, it may be directly connected or coupled to the other element, or there may be intermediate elements. In addition, the "connection" or "coupling" used herein may include wireless connection or coupling. The term "and / or" used herein includes any unit and all combinations of one or more associated listed items.

[0040] It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as those generally understood by those skilled in the art in the art to which the present invention belongs. It should also be understood that terms such as those defined in common dictionaries should be understood to have meanings consistent with the meanings in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless defined as herein.

[0041] To facilitate understanding of the embodiments of the present invention, several specific embodiments will be further explained below with reference to the accompanying drawings, and each embodiment does not constitute a limitation on the embodiments of the present invention.

[0042] The present invention aims to solve the problems of existing prediction algorithms being out of touch with the actual situation at the construction site and having low calculation accuracy. The embodiment of the present invention provides a method for predicting the material demand of railway construction projects by combining design with construction. For a specific railway construction project, the net material demand in the design drawings is combined with the actual loss rate of shotcrete at the construction site and the actual mix ratio of the concrete mixing plant to calculate the material quantity index required for such projects, form a material consumption quota, and use it for predicting the material demand in the subsequent construction process.

[0043] The processing flow of a method for predicting the demand for railway construction materials by combining design and construction provided by an embodiment of the present invention is as follows: Figure 1 As shown, the processing steps include the following:

[0044] Step S10: obtaining the net material demand according to the design drawings of the railway construction project.

[0045] Representative construction sites of the railway construction project are selected according to general geological conditions and special geological conditions, and the net material demand for various materials such as concrete, steel bars, and waterstops at each construction site is obtained based on the design drawings of the railway construction project.

[0046] Step S20, setting material loss rates includes two types: concrete loss rate and other material loss rates. The concrete loss rate is obtained based on the actual concrete loss rate of materials on the construction site of the railway construction project, and the other material loss rates adopt the loss rates specified in the cost standard document.

[0047] Step S30: obtaining a concrete mix ratio according to an actual mix ratio scheme of a concrete mixing station of a railway construction project, wherein the concrete mix ratio reflects the contents of detailed materials such as cement, fly ash, crushed stone, sand and admixtures.

[0048] Step S40: Calculate the material consumption quota according to the above net material demand, material loss rate and concrete mix ratio.

[0049] The material consumption quota reflects the various types of materials and their consumption required to complete each unit of construction work. It is calculated by comprehensively calculating the net material demand, material loss rate, concrete mix ratio, explosives and oil fuel consumption, etc. It is an intermediate result of the present invention and provides support for the final step of material demand calculation. The algorithm flow chart of a material consumption quota provided by the embodiment of the present invention is as follows: Figure 2 As shown, the calculation steps include the following:

[0050] ① The calculation formula for "Material Loss Rate Adjustment" is:

[0051] Material consumption i = net material demand i*(1+material loss rate i / 100)

[0052] Here, “i” represents non-concrete main materials such as steel bars, steel sections, anchor rods and waterproof sheets.

[0053] ②The calculation formula for "concrete loss rate adjustment" is:

[0054] Concrete consumption h = Net concrete demand h *(1+concrete loss factor h / 100)

[0055] Here, "h" represents shotcrete or cast-in-place concrete of different strength grades.

[0056] ③The calculation model of "concrete mix ratio adjustment" is:

[0057] Detailed consumption of concrete k，j =Concrete mix ratio k，j *Concrete consumption h

[0058] In the formula, k represents shotcrete or cast-in-place concrete of different strength grades, and j represents the detailed materials in the concrete mix, which include cement, fly ash, sand and gravel, and admixtures.

[0059] ④ Figure 3 An explosives and oil calculation model diagram provided for an embodiment of the present invention, "Explosives and Oil Usage Analysis" is calculated with reference to the corresponding engineering budget quota. The principle is to find the engineering budget quota based on the engineering content corresponding to a certain material consumption quota, and then calculate the consumption of explosives, gasoline and diesel therein according to unit engineering quantity statistics.

[0060] Step S50: Calculate the material demand based on the material consumption quota and the construction progress quantity.

[0061] Figure 4 A schematic diagram of a material demand calculation example provided by an embodiment of the present invention. The material demand calculation method is to select an appropriate material consumption quota according to the construction plan for the next stage (month or quarter) of the target work site, the type of structure, geological conditions, etc., and multiply it by the planned project volume. The calculation formula for material demand is as follows:

[0062] Material demand m =Material consumption quota m * Project progress quantity

[0063] Here, m represents various materials used in railway construction projects, such as steel bars, steel sections, anchor rods, waterproof sheets, waterstops, explosives, gasoline, diesel, and other materials as well as detailed materials in concrete.

[0064] Figure 5 A diagram of a material demand calculation operation interface provided by an embodiment of the present invention.

[0065] In summary, the embodiment of the present invention combines the design drawings with the actual situation of the construction site, reflects the actual situation of a specific project under a specific construction team and specific construction conditions, and the calculation result of the demand for railway construction materials is more accurate.

[0066] The implementation of the method of the present invention is helpful to improve the construction company's refined management level of construction materials, which is specifically manifested in three aspects: first, ensuring the timely, sufficient and accurate supply of materials required for the project; second, reducing the backlog and waste of materials; and third, improving the turnover efficiency of funds.

[0067] It can be known from the description of the above implementation methods that those skilled in the art can clearly understand that the present invention can be implemented by means of software plus a necessary general hardware platform. Based on such an understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which can be stored in a storage medium such as ROM / RAM, a magnetic disk, an optical disk, etc., and includes a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in the various embodiments of the present invention or certain parts of the embodiments.

[0068] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device or system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment. The device and system embodiments described above are merely schematic, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0069] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A method for predicting the demand for railway construction materials by combining design and construction, characterized in that: include: Obtain the net material requirements based on the design drawings of the railway construction project; The material loss rate is set to include concrete loss rate and other material loss rates. The concrete loss rate is obtained based on the actual loss rate of materials at the construction site of the railway construction project. Obtain the concrete mix ratio according to the actual mix ratio plan of the concrete mixing plant of the railway construction project; The material consumption quota is calculated based on the net material demand, material loss rate and concrete mix ratio, and the material demand is calculated based on the construction progress quantity of the railway construction project and the material consumption quota.

2. The method according to claim 1, characterized in that: The net material demand obtained according to the design drawings of the railway construction project includes: Representative construction sites of the railway construction project are selected according to the geological conditions, and the net material demand of various materials at each construction site is obtained according to the design drawings of the railway construction project.

3. The method according to claim 1, characterized in that: The setting material loss rate includes two types: concrete loss rate and other material loss rates. The concrete loss rate is obtained according to the actual loss rate of materials at the construction site of the railway construction project, including: The material loss rate is set to include two types: concrete loss rate and other material loss rate. The concrete loss rate is obtained based on the actual concrete loss rate at the construction site of the railway construction project, and the other material loss rate adopts the loss rate specified in the cost standard document.

4. The method according to claim 1, 2 or 3, characterized in that: The material consumption quota is calculated according to the net material demand, material loss rate and concrete mix ratio, including: The material consumption quota reflects the various types of materials and their consumption required to complete each unit of construction work: Material consumption i = net material demand i*(1+material loss rate i / 100) Where i represents the main non-concrete material; Concrete consumption h = Net concrete demand h *(1+concrete loss factor h / 100) Where h represents shotcrete or cast-in-place concrete of different strength grades; Detailed consumption of concrete k，j =Concrete mix ratio k，j *Concrete consumption h Where k represents shotcrete or cast-in-place concrete of different strength grades, j represents the detailed materials in the concrete mix, which include cement, fly ash, sand and gravel, and admixtures; According to the project content corresponding to a certain material consumption quota, find the project budget quota and calculate the consumption of explosives, gasoline and diesel according to the unit project volume.

5. The method according to claim 4, characterized in that: The material demand is calculated based on the construction progress of the railway construction project and the material consumption quota, including: The formula for calculating material demand is as follows: Material demand m =Material consumption quota m * Project progress quantity Here, m represents the detailed materials in the railway construction project, such as steel bars, steel sections, anchor rods, waterproof sheets, waterstops, explosives, gasoline and diesel, and concrete.

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