Assembly design method, device and equipment for dry-seam assembled composite beam

Abstract

The application discloses a kind of assembly design method, device and equipment of no-wet joint assembly type composite beam, method includes the following steps: based on wet joint concrete slab, according to the span of composite beam and preset span height ratio, the parameter of precast slab section is calculated;Based on the disadvantage load of composite beam, the load combination design value and standard value on composite beam are calculated;Determine the discriminant condition of no-wet joint assembly type composite beam design;Determine the invalid critical gap c cr Of concrete slab under no-wet joint condition, and the splicing gap c of composite beam must not be greater than c cr ;According to the deflection of the splicing gap of different composite beams, judge by stiffness discriminant condition, output the economic index of multiple schemes;According to economic index sequencing, the bearing capacity of composite beam is calculated in turn until stress discriminant condition is met, and no-wet joint composite beam assembly is carried out.The application ensures that shear key is uniformly distributed along the length of beam, and reduces the precast precision requirement of concrete slab.

Description

TECHNICAL FIELD

[0001] The application relates to an assembly design method, device and equipment for a wet-seam-free assembly type composite beam, and belongs to the technical field of assembly type building design. BACKGROUND

[0002] China has established a route of vigorously promoting assembly type buildings. The assembly of a floor has always been a short board of the assembly type buildings, and the effective connection of a concrete floor and a steel beam forms a composite beam, so the assembly problem of the floor is the assembly problem of the composite beam. At present, buildings mostly adopt a form of a steel bar truss floor support plate combined with a bolt nail, which can avoid on-site steel bar binding and form support, but still retains a concrete pouring and curing process, and on-site wet work is large, a construction period is long, and complete assembly cannot be achieved (for example, CN109593593A). Figure 3 Therefore, development of the wet-seam-free assembly type composite beam has great significance for realizing rapid disassembly and assembly of a structure.

[0003] At present, the design of the composite structure in the specification is all for the whole composite beam with a post-poured belt, and no clear regulation is made for the composite beam without the post-poured belt. The design of the composite beam without the post-poured belt is mostly controlled by deflection deformation, and the concrete plate joint gap and the cross section size are jointly determined, and the design is more dependent on the engineering experience of the designer, and the design efficiency is low, and blindly pursuing a smaller joint gap can greatly increase the cost.

[0004] Therefore, it is necessary to propose a standardized design idea, comprehensively consider the concrete joint size and the structural deformation control, and greatly reduce the cost and improve the economy. SUMMARY

[0005] In order to solve the above problems, the application provides an assembly design method, device and equipment for a wet-seam-free assembly type composite beam, which can greatly reduce the cost and improve the economy.

[0006] The technical scheme adopted by the application to solve the technical problem is:

[0007] In a first aspect, the application provides an assembly design method for a wet-seam-free assembly type composite beam, including the following steps:

[0008] Based on a wet-seam concrete plate, parameters of a precast plate cross section are calculated according to a composite beam span and a preset span-height ratio, and the parameters include a concrete plate thickness h, an H-shaped steel beam cross section height H, a concrete plate effective width B, an H-shaped steel beam cross section width b, a steel web plate thickness t1, a steel flange plate thickness t, and a length d of a single precast plate;

[0009] Based on an adverse load of the composite beam, a load combination design value and a standard value on the composite beam are calculated;

[0010] Determine the discriminant condition of the dry joint assembly composite beam design, the discriminant condition includes stress discriminant condition and stiffness discriminant condition;

[0011] Determine the invalid critical gap c of the concrete slab under the condition of dry joint cr , and the splicing gap c of the composite beam must not be greater than c cr ;

[0012] According to the splicing gap c of different composite beams, the deflection λ of the composite beam is calculated, and the stiffness discriminant condition is judged, and the economic index s of multiple schemes is output;

[0013] According to the economic index s, the bearing capacity of the composite beam is calculated in sequence, until the stress discriminant condition is met, and the dry joint composite beam assembly is carried out.

[0014] As a possible implementation manner of the embodiment, the calculation formula of the load combination design value and the standard value on the composite beam is:

[0015] q d =(1.3·h·W+1.3·D+1.3·S G +1.4·S Q )

[0016]

[0017] q s =(h·W+D+S G +S Q )

[0018]

[0019] In the formula, q d is the load combination design value, q s is the load combination standard value, M d is the bending moment design value, M s is the bending moment standard value, h is the thickness of the concrete slab, W is the concrete unit weight, S G is the additional dead load, S Q is the live load, l is the span of the composite beam, and D=2t+t1.

[0020] As a possible implementation manner of the embodiment, the discriminant condition of the dry joint assembly composite beam design is:

[0021] σ c ≤f c

[0022]

[0023] τ w ≤f v

[0024] λ≤[λ]

[0025] wherein σ c is the maximum compressive stress of the concrete slab; f c is the compressive strength of the concrete; is the maximum normal stress of the upper flange plate of the steel beam; is the maximum normal stress of the lower flange plate of the steel beam; f y is the yield strength of the steel; τ w is the maximum shear stress of the web of the steel beam; f v is the shear strength of the steel, and λ is the deflection of the composite beam.

[0026] As a possible implementation manner of the embodiment, a calculation formula of the invalid critical gap c cr of the concrete slab without the wet joint is as follows:

[0027] c cr = θ (H + h)

[0028]

[0029] wherein θ is the invalid critical rotation angle of the concrete slab, q is the load intensity causing the edge of the steel beam to yield, I s is the moment of inertia of the H-shaped steel section.

[0030] As a possible implementation manner of the embodiment, a calculation formula of the deflection λ of the composite beam is as follows:

[0031]

[0032] R = EI eq η

[0033]

[0034] wherein R is the reduced stiffness, η is the reduction coefficient, I eq is the converted sectional moment of inertia of the composite beam.

[0035] As a possible implementation manner of the embodiment, the deflection λ of the composite beam is calculated according to the splicing gap c of different composite beams, and the stiffness judgment condition is used for judgment, and economic indicators s of multiple schemes are output; including:

[0036] The splicing gap c of the preset composite beam is 1 mm, the deflection λ of the composite beam is calculated according to the standard load combination, and the stiffness judgment condition is used for judgment;

[0037] If the deflection λ satisfies the stiffness judgment condition, the splicing gap is taken as c+1 mm, the calculation is repeated and cycled until the stiffness judgment condition is not satisfied, and the splicing gap c at this time is output.i ; return the splicing gap c i-1 , that is, the maximum gap satisfying the stiffness judgment condition, output the material utilization index k:

[0038]

[0039] E p A p = E c A c + E s (A f + A w )

[0040] E c is the elastic modulus of concrete; A c is the cross-sectional area of the concrete slab; E s is the elastic modulus of steel; A f is the cross-sectional area of the upper and lower flange plates of the steel beam; A w is the cross-sectional area of the web plate of the steel beam;

[0041] According to the calculation result of the deflection λ of the composite beam, a plurality of cross-sectional forms are determined, the allowable maximum splicing gap c and the material utilization index k of the plurality of cross sections are finally obtained, and the economic index s of the multiple schemes is output.

[0042] As a possible implementation manner of the embodiment, according to the calculation result of the deflection λ of the composite beam, a plurality of cross-sectional forms are determined, the allowable maximum splicing gap c and the material utilization index k of the plurality of cross sections are finally obtained, and the economic index s of the multiple schemes is output; including:

[0043] If the calculation of the deflection λ of the composite beam has obtained the cross section and the splicing gap satisfying the stiffness judgment condition, one enlarged cross section and one reduced cross section are determined, the loop calculation is repeated, and the allowable maximum splicing gap c and the material utilization index k of the plurality of cross sections are finally obtained;

[0044] If the calculation of the deflection λ of the composite beam does not satisfy the stiffness judgment condition, the enlarged cross section is determined, the loop calculation is repeated, and three cross section sizes and their corresponding splicing gaps satisfying the stiffness judgment condition are obtained, and the allowable maximum splicing gap c and the material utilization index k of the plurality of cross sections are finally obtained.

[0045] As a possible implementation manner of the embodiment, the economic index s of the multiple schemes is:

[0046]

[0047] Wherein, c is the splicing gap, and k is the material utilization index.

[0048] As a possible implementation manner of the embodiment, the formula for calculating the bearing capacity of the composite beam is:

[0049]

[0050] wherein σ c is the maximum compressive stress of the concrete slab; is the maximum positive stress of the upper flange slab of the steel beam; is the maximum positive stress of the lower flange slab of the steel beam; d is the design value of the bending moment, W t is the unit weight of the upper flange slab of the steel beam, W b is the unit weight of the lower flange slab of the steel beam, W c is the unit weight of the concrete slab.

[0051] In a second aspect, the embodiment of the present application provides an assembly design device for the dry-joint assembly type composite beam, comprising:

[0052] a parameter calculation module, configured to calculate parameters of a precast slab section based on a wet-joint concrete slab and according to a span of the composite beam and a preset span-depth ratio, wherein the parameters comprise: a thickness h of the concrete slab, a section height H of the H-shaped steel beam, an effective width B of the concrete slab, a section width b of the H-shaped steel beam, a thickness t1 of a steel web plate, a thickness t of a steel flange plate, and a length d of a single precast slab;

[0053] a load combination calculation module, configured to calculate a load combination design value and a standard value on the composite beam based on adverse loads of the composite beam;

[0054] a discriminant condition determination module, configured to determine discriminant conditions for the design of the dry-joint assembly type composite beam, wherein the discriminant conditions comprise stress discriminant conditions and stiffness discriminant conditions;

[0055] a critical gap determination module, configured to determine an invalid critical gap c cr of the concrete slab under the dry-joint condition, and the splicing gap c of the composite beam should not be greater than c cr ;

[0056] an economic index output module, configured to calculate deflection λ of the composite beam according to the splicing gap c of different composite beams, and to output economic indexes s of multiple schemes according to the stiffness discriminant conditions;

[0057] a composite beam bearing capacity calculation module, configured to sequentially calculate bearing capacities of the composite beams according to the economic indexes s in order until the stress discriminant conditions are met, and then to perform assembly of the dry-joint composite beam.

[0058] In a third aspect, an embodiment of the present application provides a computer device, comprising a processor, a memory and a bus, the memory storing machine readable instructions executable by the processor, when the computer device is running, the processor and the memory communicate through the bus, the processor executes the machine readable instructions to perform the steps of the assembly design method of the dry-joint assembly type composite beam.

[0059] In a fourth aspect, an embodiment of the present application provides a storage medium, the storage medium storing a computer program, when the computer program is run by a processor, the steps of the assembly design method of the dry-joint assembly type composite beam are performed.

[0060] The technical scheme of the embodiment of the present application can have the following beneficial effects:

[0061] The assembly design method of the dry-joint assembly type composite beam of the present application converts the assembly problem of the steel beam and the concrete slab into the assembly problem of the steel beam, which can realize on-site assembly, ensures the uniform distribution of the shear key along the beam length, and reduces the prefabrication precision requirement of the concrete slab.

[0062] The present application comprehensively considers the concrete joint size and structural deformation control, jointly considers the joint gap and the economic index of material utilization, is more reasonable and effective, and maximally reduces the cost and improves the economy. BRIEF DESCRIPTION OF DRAWINGS

[0063] Figure 1 is a flow chart of the assembly design method of the dry-joint assembly type composite beam according to an exemplary embodiment;

[0064] Figure 2 is a structural diagram of an assembly design device of the dry-joint assembly type composite beam according to an exemplary embodiment;

[0065] Figure 3 is a specific design flow chart of the dry-joint assembly type composite beam according to an exemplary embodiment;

[0066] Figure 4 is a schematic diagram of an upper flange assembly according to an exemplary embodiment. DETAILED DESCRIPTION

[0067] The present application will be further described below in combination with the drawings and embodiments:

[0068] For purposes of clarity of the technical features of the present application, the present application is described in detail below with specific reference to the drawings. The following disclosure provides many different embodiments, or examples, for implementing different structures of the present application. For the purpose of simplicity and clarity of the present application, the description of the specific examples in the following text is described. In addition, the present application can repeatedly refer to the same numbers and / or letters in different examples. Such repetition is for the purpose of simplicity and clarity, and does not indicate the relationship between the various embodiments and / or arrangements being discussed. It should be noted that the components illustrated in the drawings are not necessarily drawn to scale. The present application omits the description of well-known components and processing techniques and processes to avoid unnecessarily limiting the present application.

[0069] As shown in Figure 1 , the present application provides a design method for a dry-joint assembly type composite beam, comprising the following steps:

[0070] Based on the wet-joint concrete slab, according to the span of the composite beam and the preset span-height ratio, the parameters of the precast slab section are calculated, including: the thickness of the concrete slab h, the section height of the H-shaped steel beam H, the effective width of the concrete slab B, the section width of the H-shaped steel beam b, the thickness of the steel web t1, the thickness of the steel flange plate t, and the length of the single precast slab d;

[0071] Based on the adverse load of the composite beam, the load combination design value and the standard value on the composite beam are calculated;

[0072] Determine the discriminant condition of the dry-joint assembly type composite beam design, which includes stress discriminant condition and stiffness discriminant condition;

[0073] Determine the invalid critical gap c cr of the concrete slab under the condition of dry joint, and the splicing gap c of the composite beam should not be greater than c cr ;

[0074] According to the splicing gap c of different composite beams, the deflection λ of the composite beam is calculated, and the stiffness discriminant condition is judged, and the economic index s of multiple schemes is output;

[0075] According to the economic index s, the bearing capacity of the composite beam is calculated in sequence, until the stress discriminant condition is met, and the dry-joint composite beam assembly is carried out.

[0076] As a possible implementation manner of the present embodiment, the calculation formula of the load combination design value and the standard value on the composite beam is:

[0077] q d =(1.3·h·W+1.3·D+1.3·S G +1.4·S Q )

[0078]

[0079] q s =(h·W+D+S) G +S Q )

[0080]

[0081] In the formula, q d q represents the design value of the load combination. s M represents the standard value of the load combination. d M is the design value for bending moment. s Where h is the standard value of bending moment, W is the thickness of the concrete slab, and S is the unit weight of the concrete. G For additional dead load, S Q For the use of live load, l is the span of the composite beam, and D = 2t + t1.

[0082] As one possible implementation of this embodiment, the criterion for the design of the wet joint-free prefabricated composite beam is:

[0083] σ c ≤f c

[0084]

[0085] τ w ≤f v

[0086] λ≤[λ]

[0087] Where σ c f is the maximum compressive stress in the concrete slab. c It refers to the compressive strength of concrete; This represents the maximum normal stress in the upper flange of the steel beam. f is the maximum normal stress in the lower flange of the steel beam. y τ is the yield strength of steel. w f is the maximum shear stress in the web of the steel beam. v Let λ be the shear strength of the steel, and λ be the deflection of the composite beam.

[0088] As one possible implementation of this embodiment, the ineffective critical gap c of the concrete slab under the condition of no wet joints cr The calculation formula is:

[0089] c cr =θ(H+h)

[0090]

[0091] Where θ is the ineffective critical rotation angle of the concrete slab, q is the load intensity that causes the steel beam edge to yield, and I sThe moment of inertia of the H-shaped steel section.

[0092] As a possible implementation manner of the embodiment, a calculation formula of the deflection λ of the composite beam is:

[0093]

[0094] R = EI eq η

[0095]

[0096] wherein R is the reduced stiffness, η is the reduction coefficient, I eq is the equivalent sectional moment of inertia of the composite beam.

[0097] As a possible implementation manner of the embodiment, the deflection λ of the composite beam is calculated according to the splicing gap c of different composite beams, and the economic index s of multiple schemes is output by judging the stiffness discrimination condition; comprising:

[0098] The splicing gap c of the preset composite beam is 1 mm, the deflection λ of the composite beam is calculated according to the standard load combination, and the stiffness discrimination condition is judged;

[0099] If the deflection λ satisfies the stiffness discrimination condition, the splicing gap is taken as c+1 mm, the loop calculation is repeated, and the loop calculation is stopped until the stiffness discrimination condition is not satisfied, and the splicing gap c i at this time is output; the splicing gap c i-1 is the maximum gap that satisfies the stiffness discrimination condition, and the material utilization index k is output.

[0100]

[0101] E p A p = E c A c + E s (A f + A w )

[0102] E c is the elastic modulus of concrete; A c is the sectional area of the concrete slab; E s is the elastic modulus of steel; A f is the sectional area of the upper flange plate of the steel beam; A w is the sectional area of the web plate of the steel beam.

[0103] According to the calculation result of the deflection λ of the composite beam, a plurality of sectional forms are determined, the allowable maximum splicing gap c and the material utilization index k of multiple sections are finally obtained, and the economic index s of multiple schemes is output.

[0104] As a possible implementation manner of the embodiment, the determining the plurality of cross section forms according to the calculation result of the deflection λ of the composite beam, finally obtaining the allowable maximum splicing gap c and the material utilization index k of the plurality of cross sections, and outputting the economic index s of the plurality of schemes comprises:

[0105] If the calculation of the deflection λ of the composite beam obtains the cross section and the splicing gap satisfying the stiffness discrimination condition, one enlarged cross section and one reduced cross section are determined, and the loop calculation is repeated until the allowable maximum splicing gap c and the material utilization index k of the plurality of cross sections are finally obtained.

[0106] If the calculation of the deflection λ of the composite beam does not satisfy the stiffness discrimination condition, the enlarged cross section is determined, and the loop calculation is repeated until the three cross section sizes satisfying the stiffness discrimination condition and the corresponding splicing gaps are obtained, and the allowable maximum splicing gap c and the material utilization index k of the plurality of cross sections are finally obtained.

[0107] As a possible implementation manner of the embodiment, the economic index s of the plurality of schemes is:

[0108]

[0109] Wherein, c is the splicing gap, and k is the material utilization index.

[0110] As a possible implementation manner of the embodiment, the formula for calculating the bearing capacity of the composite beam is:

[0111]

[0112] Wherein σ c is the maximum compressive stress of the concrete slab; is the maximum normal stress of the upper flange plate of the steel beam; is the maximum normal stress of the lower flange plate of the steel beam; M d is the design value of the bending moment, W t is the unit weight of the upper flange plate of the steel beam, W b is the unit weight of the lower flange plate of the steel beam, W c is the unit weight of the concrete slab.

[0113] As shown in Figure 2 , the assembly design device for the wet-joint-free fabricated composite beam provided by the embodiment comprises:

[0114] The parameter calculation module is configured to calculate parameters of the prefabricated slab cross section based on the wet-joint concrete slab and according to the span of the composite beam and a preset span-depth ratio, the parameters comprising: a concrete slab thickness h, an H-shaped steel beam cross section height H, a concrete slab effective width B, an H-shaped steel beam cross section width b, a steel web thickness t1, a steel flange plate thickness t, and a length d of a single prefabricated slab.

[0115] The load combination calculation module is configured to calculate the load combination design value and standard value on the composite beam based on the adverse load of the composite beam.

[0116] The discrimination condition determination module is configured to determine the discrimination condition of the dry-joint assembly type composite beam design, and the discrimination condition includes stress discrimination condition and stiffness discrimination condition.

[0117] The critical gap determination module is configured to determine the invalid critical gap c of the concrete slab under the dry-joint condition cr , and the splicing gap c of the composite beam should not be greater than c cr .

[0118] The economic index output module is configured to calculate the deflection λ of the composite beam according to the splicing gap c of different composite beams, and output the economic index s of multiple schemes according to the stiffness discrimination condition.

[0119] The composite beam bearing capacity calculation module is configured to calculate the bearing capacity of the composite beam in sequence according to the economic index s in order, until the stress discrimination condition is met, and the dry-joint composite beam assembly is performed.

[0120] As shown in Figure 3 and Figure 4 , the specific design process of the device for the dry-joint assembly type composite beam is as follows.

[0121] S1: Assume that the concrete slab has a wet joint, i.e. all prefabricated slabs work as a whole, and calculate the parameters of the preliminary design section according to the span l of the composite beam and the preset span-depth ratio, including: h is the thickness of the concrete slab; H is the sectional height of the H-shaped steel beam; B is the effective width of the concrete slab; b is the sectional width of the H-shaped steel beam; t1 is the thickness of the steel web; t is the thickness of the steel flange plate; and d is the length of a single prefabricated slab.

[0122] S2: The most adverse load that may occur in the use stage should be considered when calculating, and the load combination design value and standard value on the composite beam are calculated, which is a prior art.

[0123] q d = (1.3 · h · W + 1.3 · D + 1.3 · S G + 1.4 · S Q )

[0124]

[0125] q s = (h · W + D + S G + S Q )

[0126]

[0127] Wherein: q dq s is the load combination design value, M d is the design value of bending moment, M s is the standard value of bending moment, h is the thickness of concrete slab, W is the concrete unit weight, S G is the additional constant load, S Q is the live load.

[0128] S3: Determine the discriminant conditions in the accuracy control design process, including stress discriminant conditions and stiffness discriminant conditions, including:

[0129] σ c ≤f c ; τ w ≤f v ; λ≤[λ]

[0130] Where σ c is the maximum compressive stress of the concrete slab; f c is the compressive strength of concrete; is the maximum normal stress of the upper flange slab of the steel beam; is the maximum normal stress of the lower flange slab of the steel beam; f y is the yield strength of steel; τ w is the maximum shear stress of the web of the steel beam; f v is the shear strength of steel.

[0131] S4: According to the condition that there is no wet joint in the concrete slab, first determine the invalid critical gap c cr of the concrete slab, then the trial joint gap c cr must not be greater than c .

[0132] c cr = θ (H + h)

[0133]

[0134]

[0135] Where θ is the invalid critical angle of the concrete slab, q is the load intensity that makes the edge of the steel beam yield, I s is the moment of inertia of the H-shaped steel section.

[0136] S5: Preset c = 1mm, only consider the standard load combination, calculate the deflection λ of the composite beam, and judge by the stiffness discriminant condition in step S3. The precast concrete slab without wet joints is an individual force, due to the existence of the joint gap, all the concrete slabs do not enter the force state from the beginning, but rely on the deflection to make the adjacent two slabs contact, and then start to bear force. Compared with the traditional formula, the reduction factor η more fully considers the stiffness reduction caused by the joint gap.

[0137]

[0138] R = EI eq η

[0139]

[0140] Wherein, R is the reduced stiffness, η is the reduction coefficient, I eq is the equivalent cross-section moment of inertia of the composite beam.

[0141] S51: If the stiffness criterion is met, the joint gap is taken as c+1mm, and the loop calculation is repeated until the stiffness criterion in step S3 is not met, the loop stops, and the joint gap c i at this time is output. Return the joint gap c i-1 , which is the maximum gap that meets the stiffness criterion, output the material utilization index k, and enter step S6.

[0142]

[0143] E p A p = E c A c + E s (A f + A w )

[0144] E c is the elastic modulus of concrete; A c is the cross-sectional area of the concrete slab; E s is the elastic modulus of steel; A f is the cross-sectional area of the upper and lower flange plates of the steel beam; A w is the cross-sectional area of the steel beam web.

[0145] S52: If the stiffness criterion is not met, output the economic index s:

[0146]

[0147] S6: According to the calculation results of step S5, determine multiple cross-sectional forms, repeat the S5 process, finally get the allowable maximum joint gap c and material utilization index k of multiple cross sections, and output the economic index s of multiple schemes. The post-pouring belt composite beam is different from the ordinary composite beam, considering that the joint gap will also greatly affect the economic performance, blindly pursuing high precision will cause the cost to increase greatly, and the economic index considering the joint gap and material utilization rate is more reasonable and effective.

[0148] S61: If the step S5 calculation has obtained the section and the splicing gap satisfying the rigidity discrimination condition of step S3, determine one enlarged section and one reduced section, repeat the S5 process, and finally obtain the allowable maximum splicing gap c and the material utilization index k of multiple sections.

[0149] S612: If the step S5 calculation does not satisfy the S3 rigidity discrimination condition, determine the enlarged section, and repeat the S5 process in a loop until three section sizes and their corresponding splicing gaps satisfying the rigidity discrimination condition in step S3 are obtained, and finally obtain the allowable maximum splicing gap c and the material utilization index k of multiple sections.

[0150] S7: According to the s order, the carrying capacity of the composite beam is verified in turn:

[0151]

[0152]

[0153] Until the stress discrimination condition is satisfied, the design is completed, and the dry joint composite beam assembly is carried out.

[0154] The computer device provided by the embodiment of the application comprises a processor, a memory and a bus, the memory stores machine readable instructions executable by the processor, when the computer device is running, the processor and the memory communicate through the bus, and the processor executes the machine readable instructions to execute the steps of the assembly design method of any dry joint assembly type composite beam described above.

[0155] Specifically, the above-mentioned memory and processor can be general memory and processor, which are not specifically limited here, and when the processor runs the computer program stored in the memory, the above-mentioned method for calculating the installation position deviation of the AGV forklift laser scanner can be executed.

[0156] Those skilled in the art can understand that the structure of the computer device does not constitute a limitation on the computer device, and can include more or fewer components than the illustration, or combine certain components, or split certain components, or different component arrangements.

[0157] In some embodiments, the computer device can further include a touch screen which can be used to display a graphical user interface (e.g., a start interface of an application) and receive user operations for the graphical user interface (e.g., a start operation for the application). The touch screen can include a display panel and a touch panel. The display panel can be configured in the form of an LCD (Liquid Crystal Display), an OLED (Organic Light-Emitting Diode), or the like. The touch panel can collect contact or non-contact operations of a user thereon or therearound, and generate pre-set operation instructions, for example, operations of the user using a finger, a stylus, or any suitable object or accessory on or near the touch panel. In addition, the touch panel can include two parts of a touch detection device and a touch controller. The touch detection device detects the touch position and posture of the user, and detects signals generated by the touch operation, and transmits the signals to the touch controller. The touch controller receives the touch information from the touch detection device, converts the touch information into information that can be processed by the processor, and sends the information to the processor. The touch controller can also receive and execute commands from the processor. In addition, the touch panel can be implemented in various types such as a resistive type, a capacitive type, an infrared type, and a surface acoustic wave type, or any technology developed in the future. Further, the touch panel can cover the display panel. The user can operate on or near the touch panel covering the display panel according to the graphical user interface displayed on the display panel. After the touch panel detects the operation thereon or therearound, the touch panel transmits the operation to the processor to determine the user input. Then, the processor provides corresponding visual output on the display panel in response to the user input. In addition, the touch panel and the display panel can be implemented as two independent components or integrated.

[0158] Corresponding to the above-mentioned application starting method, the embodiment of the present application further provides a storage medium, and the storage medium stores a computer program. When the computer program is run by a processor, the steps of the above-mentioned any dry joint assembly type composite beam assembly design method are executed.

[0159] The application starting device provided by the embodiment of the present application can be specific hardware on the device or software or firmware installed on the device. The device provided by the embodiment of the present application has the same implementation principle and technical effects as the above-mentioned method embodiments. For brevity and conciseness, the part of the device embodiment not mentioned in the description can refer to the corresponding content in the above-mentioned method embodiments. Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-mentioned system, device, and unit can refer to the corresponding process in the above-mentioned method embodiments, which will not be described here.

[0160] Those skilled in the art will appreciate that embodiments of the application can be supplied as a method, a system, or a computer program product. Accordingly, the application can be embodied in the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the application can be in the form of a computer program product on one or more computer-usable storage media (including, but not limited to, disk memory, CD-ROMs, optical storage media, etc.) embodying computer readable program code.

[0161] In the embodiments provided by the present application, it should be understood that the disclosed apparatus and method can be implemented in other manners. The embodiments described above are merely exemplary, and the division of the modules is merely logical function division, and there can be another division manner in actual implementation. For example, a plurality of modules or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections can be indirect couplings or communication connections through some interfaces, and there can be electric, mechanical or other forms.

[0162] The modules illustrated as separated components can or can not be physically separated, and the components illustrated as modules can or can not be physical modules, i.e., can be located in one place, or can be distributed on a plurality of network modules. Some or all of the modules can be selected according to actual needs to achieve the purposes of the embodiments.

[0163] In addition, each functional module in the embodiments provided by the present application can be integrated in a processing module, or each module can exist physically independently, or two or more modules can be integrated in one module.

[0164] The present application is described with reference to flowcharts and / or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the present application. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, and the combination of flows and / or blocks in the flowcharts and / or block diagrams can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing apparatus to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing apparatus produce a means for implementing the functions specified in the flowcharts and / or block diagrams. Figure 1 The functions specified in one flow or a plurality of flows and / or blocks Figure 1 The functions specified in one flow or a plurality of flows and / or blocks

[0165] These computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture including instructions which implement the flow Figure 1 The functions of a flow or multiple flows and / or a block or multiple blocks in conjunction with the disclosed methods can be implemented on a computer. According to specific embodiments, these functions can be implemented in hardware, software, firmware or any combination thereof. If implemented in software, the functions can be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media include both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media can be any available media that can be accessed by a computer. By way of example, and not limitation, such computer-readable media can comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired computer program code in the form of instructions or data structures and that can be accessed by a computer. Also, any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or any other medium that is suitable for transmitting software, then the coaxial cable, fiber optic cable, twisted pair, DSL, or any other medium is included in the definition of medium. Disk and disc, as used herein, includes compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), and Blu-Ray® disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media. Figure 1

[0166] In addition, while the present application is described herein in terms of a few embodiments, those skilled in the art will readily perceive that many modifications can be made thereto without departing from the spirit and scope of the present application. Accordingly, it is intended that all such modifications come within the scope of the present application as defined by the claims. Figure 1 Figure 1

[0167] Finally, it should be noted that the above-mentioned embodiments illustrate rather than limit the application, since the scope of the application is given by the appended claims.​​​

Claims

1. An assembly design method for a seamless prefabricated composite beam, characterized in that, Includes the following steps: Based on concrete slabs with wet joints, the parameters of the precast slab section are calculated according to the span of the composite beam and the preset span-to-height ratio. The parameters include: concrete slab thickness h, H-beam section height H, concrete slab effective width B, H-beam section width b, steel web thickness t1, steel flange thickness t, and length d of a single precast slab. Based on the unfavorable loads on the composite beam, calculate the combined design value and standard value of the loads on the composite beam; The criteria for designing seamless prefabricated composite beams are determined, including stress criteria and stiffness criteria. Determine the critical gap c of the concrete slab without wet joints. cr Furthermore, the splice gap c of the composite beam must not exceed c. cr ; Based on the splicing gap c of different composite beams, the deflection λ of the composite beam is calculated, and the economic index s of multiple schemes is output by judging the stiffness discrimination condition. The load-bearing capacity of the composite beams is calculated sequentially based on the economic indicators s until the stress discrimination condition is met, and then the composite beams without wet joints are assembled. The deflection λ of the composite beam is calculated based on the splicing gap c of different composite beams, and the economic index s of multiple schemes is output based on the stiffness discrimination condition; including: The splicing gap of the pre-set composite beam is c = 1mm. The deflection λ of the composite beam is calculated according to the standard load combination and judged by the stiffness discrimination condition. If the deflection λ satisfies the stiffness criterion, then the joint gap is taken as c+1mm, and the calculation is repeated until the stiffness criterion is no longer satisfied. At this point, the calculation stops, and the joint gap c is output. i Return the splicing gap c i-1 This refers to the maximum clearance that satisfies the stiffness criterion, and the output material utilization index k is: AND p THE p =E c THE c +E s (THE f +A w ) Among them, E c The elastic modulus of concrete; A c E represents the cross-sectional area of ​​the concrete slab. s A represents the elastic modulus of steel. f A represents the cross-sectional area of ​​the upper and lower flanges of the steel beam. w σ is the cross-sectional area of ​​the web of the steel beam; c f is the maximum compressive stress in the concrete slab. c f is the compressive strength of concrete. y τ is the yield strength of steel. w f is the maximum shear stress in the web of the steel beam. v For the shear strength of steel; Based on the calculation results of the deflection λ of the composite beam, multiple cross-sectional forms are determined, and finally the allowable maximum splicing gap c and material utilization index k of multiple cross-sections are obtained. The economic index s of the multiple schemes is then output, and the economic index s of the multiple schemes is as follows: Where c is the splicing gap and k is the material utilization rate index; Based on the calculation results of the deflection λ of the composite beam, multiple cross-sectional forms are determined, and finally the maximum allowable splicing gap c and material utilization index k of multiple cross-sections are obtained, and the economic index s of multiple schemes is output; including: If the deflection λ of the composite beam has been calculated and the cross section and splicing gap that meet the stiffness discrimination condition have been obtained, determine one enlarged cross section and one reduced cross section, repeat the cyclic calculation, and finally obtain the maximum allowable splicing gap c and material utilization index k of multiple cross sections. If the calculated deflection λ of the composite beam does not meet the stiffness criterion, the enlarged section is determined, and the calculation is repeated until three section dimensions that meet the stiffness criterion and their corresponding splicing gaps are obtained. Finally, the maximum allowable splicing gap c and the material utilization index k of multiple sections are obtained.

2. The assembly design method for the seamless prefabricated composite beam according to claim 1, characterized in that, The formulas for calculating the combined design value and standard value of the load on the composite beam are as follows: q d =(1.3·h·W+1.3·D+1.3·S G +1.4·S Q ) q s =(h·W+D+S G +S Q ) In the formula, q d q represents the design value of the load combination. s M represents the standard value of the load combination. d M is the design value for bending moment. s Where h is the standard value of bending moment, W is the thickness of the concrete slab, and S is the unit weight of the concrete. G For additional dead load, S Q For the use of live load, l is the span of the composite beam, and D = 2t + t1.

3. The assembly design method for the seamless prefabricated composite beam according to claim 1, characterized in that, The criteria for the design of seamless prefabricated composite beams are as follows: s c ≤f c t w ≤f v λ≤[λ] Where σ c f is the maximum compressive stress in the concrete slab. c It refers to the compressive strength of concrete; This represents the maximum normal stress in the upper flange of the steel beam. f is the maximum normal stress in the lower flange of the steel beam. y τ is the yield strength of steel. w f is the maximum shear stress in the web of the steel beam. v Let λ be the shear strength of the steel, and λ be the deflection of the composite beam.

4. The assembly design method for the seamless prefabricated composite beam according to claim 1, characterized in that, The ineffective critical gap c of the concrete slab under the condition of no wet joints cr The calculation formula is: c cr =θ(H+h) Where θ is the ineffective critical rotation angle of the concrete slab, q is the load intensity that causes the steel beam edge to yield, and I s Let be the moment of inertia of the H-section steel.

5. The assembly design method for the seamless prefabricated composite beam according to claim 1, characterized in that, The formula for calculating the deflection λ of the composite beam is as follows: R=NO eq η Where R is the reduced stiffness, η is the reduction factor, and I eq Let be the equivalent moment of inertia of the composite beam.

6. An assembly design device for a seamless prefabricated composite beam, characterized in that, For performing the assembly design method of the wet-joint-free prefabricated composite beam as described in claim 1, the assembly design device includes: The parameter calculation module is used to calculate the parameters of the precast slab section based on the concrete slab with wet joints, according to the span of the composite beam and the preset span-to-height ratio. The parameters include: concrete slab thickness h, H-beam section height H, concrete slab effective width B, H-beam section width b, steel web thickness t1, steel flange thickness t, and length d of a single precast slab. The load combination calculation module is used to calculate the design and standard values ​​of load combinations on composite beams based on unfavorable loads. The discrimination condition determination module is used to determine the discrimination conditions for the design of prefabricated composite beams without wet joints. The discrimination conditions include stress discrimination conditions and stiffness discrimination conditions. The critical gap determination module is used to determine the ineffective critical gap c of a concrete slab in the case of no wet joints. cr Furthermore, the splice gap c of the composite beam must not exceed c. cr ; The economic indicator output module is used to calculate the deflection λ of the composite beam based on the splicing gap c of different composite beams, and output the economic indicators s of multiple schemes based on the stiffness discrimination condition. The composite beam bearing capacity calculation module is used to calculate the bearing capacity of composite beams sequentially according to economic indicators s until the stress discrimination condition is met, and then assemble composite beams without wet joints.

7. A computer device, characterized in that, The device includes a processor, a memory, and a bus. The memory stores machine-readable instructions that the processor can execute. When the computer device is running, the processor communicates with the memory via the bus. The processor executes the machine-readable instructions to perform the steps of the assembly design method for the wet-joint prefabricated composite beam as described in any one of claims 1-5.

8. A storage medium, characterized in that, The storage medium stores a computer program that, when executed by a processor, performs the steps of the assembly design method for the wet-joint prefabricated composite beam as described in any one of claims 1-5.

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