Building concrete strength performance evaluation system based on BIM

Abstract

A building concrete strength performance evaluation system based on BIM is provided with a BIM model building module and a concrete quality analysis module. According to the BIM-based building concrete strength performance evaluation system, a component strength evaluation score of each component can be calculated according to strength data of each component and concrete used by the component in a three-dimensional building information model; and then building overall strength evaluation scores are obtained according to the component strength evaluation scores of all the components in the three-dimensional building information model. According to the BIM-based building concrete strength performance evaluation system disclosed by the invention, the component strength evaluation score of each component and the overall strength evaluation score of the building can be obtained according to the three-dimensional building information model and the strength data of the concrete used by each component, so that the safety of the components and the building structure is judged; the method can predict the service life of the building, and can guide the construction of a final building entity in combination with the cost of concrete.

Description

Technical Field

[0001] The present invention relates to the technical field of BIM, and in particular to a building concrete strength performance evaluation system based on BIM. Background Art

[0002] As a new type of building information technology, BIM technology can realize the digitization, visualization and coordination of building information, and provide a new solution for building management. Concrete strength has always been one of the important indicators for evaluating concrete durability. The concrete components of buildings produce cracks due to the destructive effect of load stress, which leads to reduced durability or even failure, affecting the safety of the building to a certain extent. However, there are many components in the building, and the load stress of each component is not the same. Therefore, it is possible to quickly, reasonably and effectively obtain the concrete strength evaluation of each component of the building, which is of great guiding significance for judging the structural safety of the building, thereby guiding the service life of the building to the greatest extent. However, there is currently no concrete strength evaluation system based on each component of the building.

[0003] Therefore, in view of the shortcomings of the existing technology, it is necessary to provide a BIM-based building concrete strength performance evaluation system to solve the shortcomings of the existing technology. Summary of the invention

[0004] The purpose of the present invention is to avoid the shortcomings of the prior art and provide a building concrete strength performance evaluation system based on BIM. The building concrete strength performance evaluation system based on BIM can calculate the component strength evaluation score of each component according to the strength data of each component and the concrete used in the component in the three-dimensional building information model, and then calculate the overall strength evaluation score of the building according to the component strength evaluation scores of all components in the three-dimensional building information model.

[0005] The above-mentioned purpose of the present invention is achieved by the following technical measures:

[0006] A building concrete strength performance evaluation system based on BIM is provided, which is provided with:

[0007] BIM model construction module - constructs a three-dimensional building information model composed of multiple components based on the building design information;

[0008] Concrete quality analysis module - obtains a component strength evaluation score based on the strength data of each component and the concrete used in the component in the three-dimensional building information model, and then obtains the overall strength evaluation score of the building based on the component strength evaluation scores corresponding to all components in the three-dimensional building information model. The strength data are flexural strength, tensile strength and compressive strength.

[0009] Preferably, the concrete quality analysis module obtains the component strength evaluation score of each component in the three-dimensional building information model according to the component strength evaluation empirical model, and the component strength evaluation empirical model is obtained by formula (1):

[0010] CSS=ln(αD+βS+γY)…Formula (1);

[0011] Among them, CSS is the strength evaluation score of the component, α is the flexural factor of the component, β is the tensile factor of the component, γ is the compressive factor of the component, D is the flexural strength of concrete and the unit of flexural strength is MPa, S is the tensile strength of concrete and the unit of tensile strength is MPa, Y is the compressive strength of concrete and the unit of compressive strength is MPa, among which α, β and γ are all greater than 0.

[0012] Preferably, the above-mentioned components are foundations, columns, beams, floor slabs, stairs and roofs.

[0013] When the component is a foundation, CSS in formula (1) = CSS 地基 ;

[0014] When the member is a column, CSS in formula (1) = CSS 柱体 ;

[0015] When the member is a beam, CSS in formula (1) = CSS 梁体 ;

[0016] When the component is a floor slab, CSS in formula (1) = CSS 楼板 ;

[0017] When the component is a staircase, CSS in formula (1) = CSS 楼梯 ;

[0018] When the component is a staircase, CSS in formula (1) = CSS 楼梯 ;

[0019] When the member is a roof, CSS in formula (1) = CSS 屋顶 .

[0020] Preferably, the concrete quality analysis module obtains the overall strength evaluation score of the building according to an empirical model for overall strength evaluation of the building, and the empirical model for overall strength evaluation of the building is obtained by formula (1):

[0021] BSS=ε 地基 CSS 地基 +ε 柱体 CSS' 柱体 +ε 梁体 CSS' 梁体 +ε 楼板CSS' 楼板 +

[0022] ε 楼梯 CSS' 楼梯 +ε 屋顶 CSS 屋顶

[0023] ...Formula (2);

[0024] Among them, BSS is the overall strength evaluation score of the building, ε 地基 is the strength weight of the foundation, ε 柱体 is the strength weight of the column, ε 梁体 is the strength weight of the beam, ε 楼板 is the strength weight of the floor slab, ε 楼梯 is the strength weight of the stairs, ε 屋顶 is the strength weight of the roof, ε 地基 , ε 柱体 ε 梁体 , ε 楼板 , ε 楼梯 and ε 屋顶 Both are greater than 0, CSS' 柱体 is the average strength evaluation score of all columns in the three-dimensional building information model, CSS' 梁体 is the average strength evaluation score of all beams in the three-dimensional building information model, CSS' 楼板 is the average strength evaluation score of all floors in the three-dimensional building information model, CSS' 楼梯 It is the average strength evaluation score of all stairs in the three-dimensional building information model.

[0025] Preferably, ε 地基 is 1.48, ε 柱体 is 1.55, ε 梁体 is 2.75, ε 楼板 is 0.56, ε 楼梯 is 0.32, ε 屋顶 It is 0.44.

[0026] When the component is a foundation, in formula (1), α is 2.24, β is 2.56, and γ is 2.32;

[0027] When the component is a column, in formula (1), α is 1.64, β is 2.38, and γ is 1.95;

[0028] When the member is a beam, in formula (1), α is 1.35, β is 1.75, and γ is 2.26;

[0029] When the member is a floor slab, in formula (1), α is 1.03, β is 1.49, and γ is 2.49;

[0030] When the component is a staircase, in formula (1), α is 0.82, β is 0.64, and γ is 1.48;

[0031] When the component is a roof, in formula (1), α is 0.45, β is 1.46, and γ is 1.56.

[0032] Preferably, the above concrete is at least one of concrete A, concrete B or concrete C.

[0033] When the concrete is concrete A, the raw materials of the concrete A are cement, silica fume, aggregate, steel fiber, hematite, water, lithium fluoride, zinc oxide whisker and water reducing agent.

[0034] When the concrete is concrete B, the raw materials of concrete B are cement, silica fume, fly ash, quartz sand, aggregate, steel fiber, water reducing agent, dioctyl terephthalate, water and polyvinyl alcohol fiber.

[0035] When the concrete is concrete C, the raw materials of the concrete C are cement, siliceous-aluminous mineral admixture, silica fume, water reducing agent, steel fiber, basalt fiber, water and aggregate.

[0036] When the concrete is concrete A, the components of concrete A are as follows: 480 parts of cement, 45 parts of silica fume, 1155 parts of aggregate, 42 parts of steel fiber, 30 parts of hematite, 135 parts of water, 17 parts of lithium fluoride, 75 parts of zinc oxide whisker and 5.8 parts of water reducer.

[0037] When the concrete is concrete B, the components of concrete B are as follows: 500 parts by weight of cement, 120 parts of silica fume, 150 parts of fly ash, 340 parts of quartz sand, 932 parts of aggregate, 70 parts of steel fiber, 10 parts of water reducer, 150 parts of water, 32 parts of dioctyl terephthalate and 47 parts of polyvinyl alcohol fiber.

[0038] When the concrete is concrete C, the components of concrete C are as follows: 623 parts by weight of cement, 128 parts by weight of siliceous-aluminous mineral admixture, 106 parts by weight of silica fume, 10.8 parts by weight of water reducer, 124 parts by weight of steel fiber, 8 parts by weight of basalt fiber, 238 parts by weight of water, and 953 parts by weight of aggregate.

[0039] When the concrete is concrete A, the flexural strength of concrete A is 147.2 MPa, the compressive strength of concrete A is 113.3 MPa, and the tensile strength of concrete A is 33.0 MPa.

[0040] When the concrete is concrete B, the flexural strength of concrete B is 136.6 MPa, the compressive strength of concrete B is 142.3 MPa, and the tensile strength of concrete B is 53.5 MPa.

[0041] When the concrete is concrete C, the flexural strength of concrete C is 93.5 MPa, the compressive strength of concrete B is 104.8 MPa, and the tensile strength of concrete B is 29.9 MPa.

[0042] A building concrete strength performance evaluation system based on BIM of the present invention is provided with: a BIM model construction module constructs a three-dimensional building information model composed of multiple components according to the design information of the building; a concrete quality analysis module obtains a component strength evaluation score according to the strength data of each component and the concrete used in the component in the three-dimensional building information model, and then obtains the overall strength evaluation score of the building according to the component strength evaluation scores corresponding to all the components in the three-dimensional building information model. The concrete quality analysis module obtains the component strength evaluation score of each component in the three-dimensional building information model according to the component strength evaluation empirical model, the strength data are flexural strength, tensile strength and compressive strength, and the component strength evaluation empirical model is obtained by formula (1): CSS=ln(αD+βS+γY)...Formula (1); wherein CSS is the strength evaluation score of the component, α is the flexural factor of the component, β is the tensile factor of the component, γ is the compressive factor of the component, D is the flexural strength of the concrete and the unit of the flexural strength is MPa, S is the tensile strength of the concrete and the unit of the tensile strength is MPa, Y is the compressive strength of the concrete and the unit of the compressive strength is MPa, wherein α, β and γ are all greater than 0. The BIM-based building concrete strength performance evaluation system can calculate the component strength evaluation score of each component according to the strength data of each component and the concrete used in the component in the three-dimensional building information model, and then calculate the overall strength evaluation score of the building according to the component strength evaluation scores of all components in the three-dimensional building information model. Through the BIM-based building concrete strength performance evaluation system of the present invention, the component strength evaluation score of each component and the overall strength evaluation score of the building can be obtained according to the three-dimensional building information model and the strength data of the concrete used in each component, so as to judge the safety of the component and the building structure and predict the service life of the building. At the same time, it can also guide the construction of the final building entity in combination with the cost of concrete. DETAILED DESCRIPTION

[0043] The technical solution of the present invention is further described in conjunction with the following embodiments.

[0044] Example 1

[0045] A building concrete strength performance evaluation system based on BIM, comprising:

[0046] BIM model construction module - constructs a three-dimensional building information model composed of multiple components based on the building design information;

[0047] Concrete quality analysis module - obtains the component strength evaluation score based on the strength data of each component and the concrete used in the three-dimensional building information model, and then obtains the overall strength evaluation score of the building based on the component strength evaluation scores corresponding to all components in the three-dimensional building information model. The strength data include flexural strength, tensile strength and compressive strength.

[0048] The concrete quality analysis module obtains the component strength evaluation score of each component in the three-dimensional building information model according to the component strength evaluation empirical model. The component strength evaluation empirical model is obtained by formula (1):

[0049] CSS=ln(αD+βS+γY)…Formula (1);

[0050] Among them, CSS is the strength evaluation score of the component, α is the flexural factor of the component, β is the tensile factor of the component, γ is the compressive factor of the component, D is the flexural strength of concrete and the unit of flexural strength is MPa, S is the tensile strength of concrete and the unit of tensile strength is MPa, Y is the compressive strength of concrete and the unit of compressive strength is MPa, among which α, β and γ are all greater than 0.

[0051] Since the component strength evaluation score and the overall strength evaluation score of the building reflect the strength of the components and the building, the higher the strength evaluation score, the higher the strength and the longer the service life.

[0052] The components of the present invention are foundation, column, beam, floor, stair and roof. When the component is the foundation, CSS in formula (1) = CSS 地基 ; When the component is a column, CSS in formula (1) = CSS 柱体 ; When the component is a beam, CSS in formula (1) = CSS 梁体 ; When the component is a floor slab, CSS in formula (1) = CSS 楼板 ; When the component is a staircase, CSS in formula (1) = CSS 楼梯 ; When the component is a staircase, CSS in formula (1) = CSS 楼梯 ; When the component is a roof, CSS in formula (1) = CSS 屋顶 .

[0053] The concrete quality analysis module obtains the overall strength evaluation score of the building according to the overall strength evaluation empirical model of the building. The overall strength evaluation empirical model of the building is obtained by formula (1):

[0054] The empirical model for overall strength evaluation of buildings is expressed by formula (2):

[0055] BSS=ε 地基 CSS 地基 +ε柱体 CSS' 柱体 +ε 梁体 CSS' 梁体 +ε 楼板 CSS' 楼板 +

[0056] ε 楼梯 CSS' 楼梯 +ε 屋顶 CSS 屋顶

[0057] ...Formula (2);

[0058] Among them, BSS is the overall strength evaluation score of the building, ε 地基 is the strength weight of the foundation, ε 柱体 is the strength weight of the column, ε 梁体 is the strength weight of the beam, ε 楼板 is the strength weight of the floor slab, ε 楼梯 is the strength weight of the stairs, ε 屋顶 is the strength weight of the roof, ε 地基 , ε 柱体 ε 梁体 , ε 楼板 , ε 楼梯 and ε 屋顶 Both are greater than 0, CSS' 柱体 is the average strength evaluation score of all columns in the three-dimensional building information model, CSS' 梁体 is the average strength evaluation score of all beams in the three-dimensional building information model, CSS' 楼板 is the average strength evaluation score of all floors in the three-dimensional building information model, CSS' 楼梯 It is the average strength evaluation score of all stairs in the 3D building information model.

[0059] The empirical model for overall strength evaluation of buildings and the empirical model for component strength evaluation of the present invention, when the parameters of formula (1) and formula (2) are , the obtained strength evaluation score can best reflect the actual strength of the building and the service life of the building. 地基 is 1.48, ε 柱体 is 1.55, ε 梁体 is 2.75, ε 楼板 is 0.56, ε 楼梯 is 0.32, ε 屋顶When the component is a foundation, in formula (1), α is 2.24, β is 2.56, and γ is 2.32; when the component is a column, in formula (1), α is 1.64, β is 2.38, and γ is 1.95; when the component is a beam, in formula (1), α is 1.35, β is 1.75, and γ is 2.26; when the component is a floor, in formula (1), α is 1.03, β is 1.49, and γ is 2.49; when the component is a staircase, in formula (1), α is 0.82, β is 0.64, and γ is 1.48; when the component is a roof, in formula (1), α is 0.45, β is 1.46, and γ is 1.56.

[0060] Among them, the empirical models for strength evaluation of various components are as follows:

[0061] Empirical model for foundation strength evaluation: CSS 地基 =ln(2.24D+2.56S+2.32Y);

[0062] Empirical model for strength evaluation of columns: CSS 柱体 =ln(1.64D+2.38S+1.95Y);

[0063] Empirical model for beam strength evaluation: CSS 梁体 =ln(1.35D+1.75S+2.26Y);

[0064] Empirical model for strength evaluation of floor slabs: CSS 楼板 =ln(1.03D+1.49S+2.49Y);

[0065] Empirical model for strength evaluation of stairs: CSS 楼梯 =ln(0.82D+0.64S+1.48Y);

[0066] Empirical model for roof strength evaluation: CSS 屋顶 =ln(0.45D+1.46S+1.56Y);

[0067] Among them, the empirical model for overall strength evaluation of buildings is as follows:

[0068] BSS=1.48CSS 地基 +1.55CSS' 柱体 +2.75CSS' 梁体 +0.56CSS' 楼板

[0069] +0.32CSS' 楼梯 +0.44CSS 屋顶 ...Formula (2);

[0070] In the same component of the present invention, the concrete is concrete A, concrete B or concrete C.

[0071] The weight of the components of concrete A is: 480 parts of cement, 45 parts of silica fume, 1155 parts of aggregate, 42 parts of steel fiber, 30 parts of hematite, 135 parts of water, 17 parts of lithium fluoride, 75 parts of zinc oxide whisker and 5.8 parts of water reducer. Among them, the water reducer is lignin sulfonate. The flexural strength of concrete A is 147.2MPa, the compressive strength of concrete A is 113.3MPa, and the tensile strength of concrete A is 33.0MPa.

[0072] The weight proportions of the components of Concrete B are: 500 parts of cement, 120 parts of silica fume, 150 parts of fly ash, 340 parts of quartz sand, 932 parts of aggregate, 70 parts of steel fiber, 10 parts of water reducer, 150 parts of water, 32 parts of dioctyl terephthalate and 47 parts of polyvinyl alcohol fiber. The water reducer is a polycarboxylic acid high-performance water reducer. The flexural strength of Concrete B is 136.6 MPa, the compressive strength of Concrete B is 142.3 MPa, and the tensile strength of Concrete B is 53.5 MPa.

[0073] The weight of the components of concrete C is: 623 parts of cement, 128 parts of silica-alumina mineral admixture, 106 parts of silica fume, 10.8 parts of water reducer, 124 parts of steel fiber, 8 parts of basalt fiber, 238 parts of water, and 953 parts of aggregate. The water reducer is a water-soluble resin sulfonate. The flexural strength of concrete C is 93.5MPa, the compressive strength of concrete B is 104.8MPa, and the tensile strength of concrete B is 29.9MPa.

[0074] According to the components of concrete A, concrete B and concrete C of the present invention, compression test pieces were prepared respectively. The size of the compression test piece was a cube with a side length of 70.7 mm. The test pieces that reached the predetermined curing age were taken out of the curing box, the surface moisture was wiped off, and the YAW6206 microcomputer-controlled electro-hydraulic servo pressure testing machine was used for testing. The continuous uniform load was applied by computer control, and the loading rate was 0.5 MPa / s according to the size specified in GB / T50081-2019 "Standard for Test Methods of Physical and Mechanical Properties of Concrete". Three test pieces were prepared in each group, and the results were averaged to obtain the corresponding compressive strengths of concrete A, concrete B and concrete C.

[0075] According to the components of concrete A, concrete B and concrete C of the present invention, tensile test pieces are prepared respectively. The tensile test pieces are in the shape of dumbbell-shaped thin plates. The size of the test pieces is 330×60×13mm according to JC / T 2461-2018 "Test Method for Mechanical Properties of High Ductility Fiber Reinforced Cement-based Composite Materials". The test was carried out using a WDW-300 microcomputer-controlled electronic universal testing machine. When installing the test pieces, eccentric stress conditions should be avoided. The loading speed is 0.15mm / min. Five test pieces are prepared in each group. The results are averaged to obtain the tensile strength corresponding to concrete A, concrete B and concrete C.

[0076] According to the components of concrete A, concrete B and concrete C of the present invention, flexural test specimens are prepared respectively, and the size of the test specimens is in accordance with GB / T 50081-2021 "Standard for Test Methods of Mechanical Properties of Ordinary Concrete". There shall be no defects with an outer diameter exceeding 5mm and a depth exceeding 2mm in the middle 1 / 3 section of the length of the test specimen. Then the hydraulic universal testing machine is used for the test, and usually 3 test specimens are prepared for each group. The results are averaged to obtain the corresponding flexural strength of concrete A, concrete B and concrete C.

[0077] Plan 1: Concrete A is used for the foundation, all columns and all beams, concrete B is used for all floor slabs and all stairs, and concrete C is used for the roof. The component strength evaluation scores of each component are shown in Table 1.

[0078] Table 1. Component strength evaluation scores of each component

[0079]

[0080] Since all columns and beams are made of concrete A, and all floors and stairs are made of concrete B, CSS 柱体 =CSS' 柱体 , CSS 梁体 =CSS' 梁体 , CSS 楼板 =CSS' 楼板 , CSS 楼梯 =CSS' 楼梯 Therefore, the overall strength evaluation score BSS of the building in this embodiment is 44.42599.

[0081] Option 2: Concrete A is used for the foundation, all columns and roof, concrete C is used for all stairs, and concrete B is used for all columns and all beams. The component strength evaluation scores of each component are shown in Table 2.

[0082] Table 2. Component strength evaluation scores of each component

[0083]

[0084] Since all columns, beams, floors and stairs are made of the same concrete, CSS 柱体 =CSS' 柱体 , CSS 梁体 =CSS' 梁体 , CSS 楼板 =CSS' 楼板 , CSS 楼梯 =CSS' 楼梯 Therefore, the overall strength evaluation score BSS of the building in this embodiment is 43.71617.

[0085] It can be seen from the BSS of Scheme 1 and Scheme 2 that the overall strength evaluation score of the building in Scheme 1 is higher than that in Scheme 2. Therefore, the service life of the building obtained in Scheme 1 is higher than that in Scheme 2.

[0086] The building concrete strength performance evaluation system based on BIM can calculate the component strength evaluation score of each component according to the strength data of each component and the concrete used in the component in the three-dimensional building information model, and then calculate the overall strength evaluation score of the building according to the component strength evaluation scores of all components in the three-dimensional building information model. Through the building concrete strength performance evaluation system based on BIM of the present invention, the component strength evaluation score of each component and the overall strength evaluation score of the building can be obtained according to the three-dimensional building information model and the strength data of the concrete used in each component, so as to judge the safety of the component and building structure, predict the service life of the building, and at the same time, it can also guide the construction of the final building entity in combination with the cost of concrete.

[0087] Verification Example

[0088] This embodiment evaluates the fatigue performance of the structure under repeated loads through high temperature, high humidity and dynamic loads, thereby verifying the relationship between the strength evaluation score and the service life of the components and buildings of the present invention.

[0089] Under the same conditions, different concrete foundation test specimens, column test specimens, beam test specimens, floor test specimens, staircase test specimens and roof test specimens are tested at a temperature of 95°C and a humidity of 98%; and the dynamic load of the foundation test specimen is 150kN / m 2 , The dynamic load of the floor test sample is 3.0kN / m 2 , The dynamic load of the staircase test sample is 4.0kN / m 2 , The dynamic load of the roof test sample is 0.80KN / m 2, the dynamic load of the column test sample is 350.00kNm, the dynamic load of the beam test sample is 40.0kN / m, and the aging is 240 days. When there is no crack on the surface of the test sample or the crack width is less than 0.1mm, the aging degree is level I; when the crack width is 0.1mm-0.2mm, the aging degree is level II; when the crack width is 0.2mm-0.3mm, the aging degree is level III; when the crack width is 0.3mm-0.4mm, the aging degree is level IV; when the crack width is greater than 0.4mm, the aging degree is level VI.

[0090] Table 3. Aging degree of each component test sample prepared by different concrete

[0091] member Concrete A Concrete B Concrete C <![CDATA[CSS 地基 ]]> 6.5178 6.6504 6.2712 Aging degree Ⅱ Ⅰ Ⅲ <![CDATA[CSS 柱体 ]]> 6.2932 6.4439 6.0611 Aging degree Ⅱ Ⅰ Ⅳ <![CDATA[CSS 梁体 ]]> 6.2394 6.1916 6.0292 Aging degree Ⅰ Ⅱ Ⅲ <![CDATA[CSS 楼板 ]]> 6.1798 6.3539 5.9960 Aging degree Ⅱ Ⅰ Ⅳ <![CDATA[CSS 楼梯 ]]> 5.7350 5.8773 5.5251 Aging degree Ⅰ Ⅰ Ⅱ <![CDATA[CSS 屋顶 ]]> 5.6739 5.8905 5.5183 Aging degree Ⅱ Ⅱ Ⅲ

[0092] Under the same conditions, different concrete foundation test specimens, column test specimens, beam test specimens, floor test specimens, staircase test specimens and roof test specimens were made into a three-story building frame model with an overall height of 90cm. The aging temperature was 100℃ and the humidity was 95%; and the dynamic load of the foundation test specimen was 150kN / m 2 , The dynamic load of the floor test sample is 6.0kN / m 2 , The dynamic load of the staircase test sample is 5.0kN / m 2 , The dynamic load of the roof test sample is 1.00KN / m 2 , aging for 360 days. The average crack width of building frame model 1 is 0.52mm, and the maximum crack is 1.23mm; the average crack width of building frame model 2 is 0.63mm, and the maximum crack is 2.42mm.

[0093] The above-mentioned aging experiment shows that the component strength evaluation score and the building overall strength evaluation score of the present invention correspond to the degree of aging, and can be used to evaluate and judge the safety of components and building structures, predict the service life of the building, and at the same time, combined with the cost of concrete, guide the construction of the final building entity.

[0094] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A building concrete strength performance evaluation system based on BIM, characterized in that: The settings are: BIM model construction module - constructs a three-dimensional building information model composed of multiple components based on the building design information; Concrete quality analysis module - obtains a component strength evaluation score according to the strength data of each component and the concrete used in the component in the three-dimensional building information model, and then obtains the overall strength evaluation score of the building according to the component strength evaluation scores corresponding to all components in the three-dimensional building information model, wherein the strength data are flexural strength, tensile strength and compressive strength; The concrete quality analysis module obtains the component strength evaluation score of each component in the three-dimensional building information model according to the component strength evaluation empirical model. The component strength evaluation empirical model is obtained by formula (1): CSS=ln(αD+βS+γY)…Formula (1); Among them, CSS is the strength evaluation score of the component, α is the flexural factor of the component, β is the tensile factor of the component, γ is the compressive factor of the component, D is the flexural strength of concrete and the unit of flexural strength is MPa, S is the tensile strength of concrete and the unit of tensile strength is MPa, Y is the compressive strength of concrete and the unit of compressive strength is MPa, among which α, β and γ are all greater than 0.

2. The building concrete strength performance evaluation system based on BIM according to claim 1 is characterized in that: The components are foundation, columns, beams, floor slabs, stairs and roof.

3. The building concrete strength performance evaluation system based on BIM according to claim 2 is characterized in that: When the component is a foundation, CSS in formula (1) = CSS 地基 ; When the member is a column, CSS in formula (1) = CSS 柱体 ; When the member is a beam, CSS in formula (1) = CSS 梁体 ; When the component is a floor slab, CSS in formula (1) = CSS 楼板 ; When the component is a staircase, CSS in formula (1) = CSS 楼梯 ; When the component is a staircase, CSS in formula (1) = CSS 楼梯 ; When the member is a roof, CSS in formula (1) = CSS 屋顶 .

4. The building concrete strength performance evaluation system based on BIM according to claim 3 is characterized in that: The concrete quality analysis module obtains the overall strength evaluation score of the building according to the overall strength evaluation empirical model of the building. The overall strength evaluation empirical model of the building is obtained by formula (1): The empirical model for overall strength evaluation of a building is expressed by formula (2): BSS=ε 地基 CSS 地基 +ε 柱体 CSS' 柱体 +ε 梁体 CSS' 梁体 +ε 楼板 CSS' 楼板 + ε 楼梯 CSS' 楼梯 +ε 屋顶 CSS 屋顶 ...Formula (2); Among them, BSS is the overall strength evaluation score of the building, ε 地基 is the strength weight of the foundation, ε 柱体 is the strength weight of the column, ε 梁体 is the strength weight of the beam, ε 楼板 is the strength weight of the floor slab, ε 楼梯 is the strength weight of the stairs, ε 屋顶 is the strength weight of the roof, ε 地基 , ε 柱体 ε 梁体 , ε 楼板 , ε 楼梯 and ε 屋顶 Both are greater than 0, CSS' 柱体 is the average strength evaluation score of all columns in the three-dimensional building information model, CSS' 梁体 is the average strength evaluation score of all beams in the three-dimensional building information model, CSS' 楼板 is the average strength evaluation score of all floors in the three-dimensional building information model, CSS' 楼梯 It is the average strength evaluation score of all stairs in the three-dimensional building information model.

5. The building concrete strength performance evaluation system based on BIM according to claim 4 is characterized in that: ε 地基 is 1.48, ε 柱体 is 1.55, ε 梁体 is 2.75, ε 楼板 is 0.56, ε 楼梯 is 0.32, ε 屋顶 It is 0.

44.

6. The building concrete strength performance evaluation system based on BIM according to claim 5 is characterized in that: When the component is a foundation, in formula (1), α is 2.24, β is 2.56, and γ is 2.32; When the component is a column, in formula (1), α is 1.64, β is 2.38, and γ is 1.95; When the member is a beam, in formula (1), α is 1.35, β is 1.75, and γ is 2.26; When the member is a floor slab, in formula (1), α is 1.03, β is 1.49, and γ is 2.49; When the component is a staircase, in formula (1), α is 0.82, β is 0.64, and γ is 1.48; When the component is a roof, in formula (1), α is 0.45, β is 1.46, and γ is 1.

56.

7. The building concrete strength performance evaluation system based on BIM according to any one of claims 1 to 6, characterized in that: The concretes are concrete A, concrete B and concrete C; The raw materials of the concrete A are cement, silica fume, aggregate, steel fiber, hematite, water, lithium fluoride, zinc oxide whisker and water reducing agent; The raw materials of the concrete B are cement, silica fume, fly ash, quartz sand, aggregate, steel fiber, water reducing agent, dioctyl terephthalate, water and polyvinyl alcohol fiber; The raw materials of the concrete B are cement, siliceous-aluminous mineral admixture, silica fume, water reducing agent, steel fiber, basalt fiber, water and aggregate.

8. The building concrete strength performance evaluation system based on BIM according to any one of claims 1 to 6, characterized in that: In the same component, the concrete is concrete A, concrete B or concrete C.

9. The building concrete strength performance evaluation system based on BIM according to claim 7, characterized in that: The components of the concrete A are as follows: 480 parts of cement, 45 parts of silica fume, 1155 parts of aggregate, 42 parts of steel fiber, 30 parts of hematite, 135 parts of water, 17 parts of lithium fluoride, 75 parts of zinc oxide whisker and 5.8 parts of water reducing agent; The components of the concrete B are as follows: 500 parts by weight of cement, 120 parts of silica fume, 150 parts of fly ash, 340 parts of quartz sand, 932 parts of aggregate, 70 parts of steel fiber, 10 parts of water reducer, 150 parts of water, 32 parts of dioctyl terephthalate and 47 parts of polyvinyl alcohol fiber; The components of the concrete C are as follows by weight: 623 parts of cement, 128 parts of siliceous-aluminous mineral admixture, 106 parts of silica fume, 10.8 parts of water reducer, 124 parts of steel fiber, 8 parts of basalt fiber, 238 parts of water, and 953 parts of aggregate.

10. The building concrete strength performance evaluation system based on BIM according to claim 9, characterized in that: When the concrete is concrete A, the flexural strength is 147.2 MPa, the compressive strength of concrete A is 113.3 MPa, and the tensile strength of concrete A is 33.0 MPa; When the concrete is concrete B, the flexural strength is 136.6 MPa, the compressive strength of concrete B is 142.3 MPa, and the tensile strength of concrete B is 53.5 MPa; When the concrete is concrete C, the flexural strength is 93.5 MPa, the compressive strength of concrete B is 104.8 MPa, and the tensile strength of concrete B is 29.9 MPa.

Images