CN108846150B - A kind of determination method of building strength degradation degree - Google Patents

A kind of determination method of building strength degradation degree Download PDF

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CN108846150B
CN108846150B CN201810362490.8A CN201810362490A CN108846150B CN 108846150 B CN108846150 B CN 108846150B CN 201810362490 A CN201810362490 A CN 201810362490A CN 108846150 B CN108846150 B CN 108846150B
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load
reinforced concrete
concrete building
ansys
building
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CN108846150A (en
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刘子昂
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Shanghai Hao Yi Tong health information Consulting Co., Ltd.
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Shanghai Hao Yi Tong Health Information Consulting Co Ltd
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/20—Design optimisation, verification or simulation
    • G06F30/23—Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/10—Geometric CAD
    • G06F30/13—Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
    • G06F2119/06—Power analysis or power optimisation

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Abstract

The present invention relates to a kind of determination methods of building strength degradation degree, which comprises the following steps: establishes the model of building structure；Input file needed for carrying out coupling analysis, generating strength degradation degree analyzing and calculation document, the simplification overall model for establishing the building structure, calculating structure long-term strength degree of degeneration；The present invention utilizes emulated computation method, can be according to analysis Data Detection building strength degradation degree, accurate intelligence.

Description

A kind of determination method of building strength degradation degree
Technical field
A kind of determination method of building strength degradation degree belongs to the building structures intensity detection analysis skill Art field.
Background technique
Currently, most of fabric structure can not predict the remaining life of its own according to the data that sensor monitors.This One defect reduces the timeliness to fabric structure STABILITY MONITORING, ties up maintenance personnel from carrying out necessary finishing in time Shield.
Summary of the invention
In view of this, the present invention provides a kind of determination methods of building strength degradation degree, which is characterized in that The following steps are included:
S1, the model that building structure is established using ANSYS software, the rule according to building fatigue design operating condition and specification It is fixed, load file needed for generating fatigue mechanisms and vibration file；
S2, starting ANSYS-MATLAB interface, check the validity of ANSYS software input file, call ANSYS Software carry out load and shake synergy under coupling analysis, obtain load and shake synergy under fabric structure it is anti- It answers；
S3, the calculating type that MATLAB software is specified in ANSYS-MATLAB interface, read ANSYS software results text Part generates load file and calculation document needed for MATLAB software calculates according to specified analysis type, is stored in work text Part folder；
It is raw to read in ANSYS-MATLAB interface by S4, the Whole structure model that building simplification is established in MATLAB software At fatigue load file and calculation document, carry out building strength degradation degree analyzing, obtain load and vibration synergy Under equivalent static load, calculated by formula one:
Formula one:
Wherein, it is the equivalent static load under load and vibration synergy, is the static load under load independent role, Refer in building layer, be the total number of plies of building, refers to layer in building of transverse vibration interference coefficient, refer to building In the layer of longitudinal vibration interference coefficient, for the rational greater than 0 and less than 1 be joint for the rational greater than 0 and less than 1 Strengthen interference coefficient, for the rational greater than 0 and less than 1；
S5, step S4 specifically include following modeling and calculating step:
A. the overall structure simplified model that building is established in MATLAB software, building superstructure is reduced to save Point mass acts on its centroid position；
B. the tired control load based on fatigue load Designed recurrence period, Pile Soil nonlinear model obtain the linear of basis Stiffness matrix；
C. the linear stiffness matrix on the basis in overall structure simplified model and step b based on the building in step a, Apply the fatigue load and calculating parameter setting file that building is analyzed simultaneously, carries out building load, vibrations load connection Cooperate the building overall structure response analysis under；
D. the equivalent stress of each key node of structure, and the strength degradation of setting are obtained based on overall structure response analysis Degree analyzing file, the structural fatigue carrying out load and shaking under synergy operating condition calculate；
E. the multi-state parallel computation file that interface generates is read in, multi-state parallel computation is carried out；
S6, the structure obtained under different designs load and corresponding vibrations load synergy according to load-intensity curve are strong Spend degree of degeneration；
S7, the brittle criterion according to fabric structure, obtain the long-term strength degree of degeneration of fabric structure；
S8, the building strength degradation degree analyzing model based on semi-monolithic method；
S9, the finite element model that building infrastructure is established using ANSYS software, output obtain the quality of foundation structure And stiffness matrix；
S10, using basic calculation program, read in the foundation structure quality and stiffness matrix in step S9, carry out polycondensation, obtain To building base model matrix；
S11, based on the model matrix in S10, building model is established in ANSYS software, according to fatigue design operating condition Load file needed for generating fatigue mechanisms with the regulation of building specification；
S12, starting ANSYS-MATLAB interface, first check the validity of ANSYS software input file, call ANSYS software carries out the structural response analysis under load action, obtains the structural response under load action；
S13, the calculating type that MATLAB software is specified in ANSYS-MATLAB interface, read ANSYS software results text Part generates affiliated building bottom building load and calculation document needed for calculating according to specified analysis type, is stored in Working folder；
S14, building infrastructure model is established in MATLAB software, read in the building load text in step S14 Part and calculation document generate random wave according to design vibration element setting vibration spectrum parameter, carry out building load, vibrations load Building infrastructure response analysis under synergy, obtains foundation structure equivalent static load；
Foundation structure finite element model in S15, step S15 in MATLAB software is based on tired control load, Pile Soil Nonlinear model obtains the linear stiffness matrix on basis；
S16, different designs load is obtained using load-intensity curve and shakes the building basis under element synergy Strength degradation degree；
S17, foundation building embrittlement criterion, the long-term strength for obtaining building infrastructure under load and shock effect move back Change degree.
Beneficial achievement of the invention are as follows: the present invention provides a kind of determination method of building strength degradation degree, It, can be according to analysis Data Detection building strength degradation degree, accurate intelligence using emulated computation method；With wide city Field prospect and application value.
Specific embodiment
In order to which technical problems, technical solutions and advantages to be solved are more clearly understood, tie below Embodiment is closed, the present invention will be described in detail.It should be noted that specific embodiment described herein is only to explain The present invention is not intended to limit the present invention, and the product for being able to achieve said function belongs to equivalent replacement and improvement, is all contained in this hair Within bright protection scope.The specific method is as follows:
Embodiment 1: using 50 layers of building as main study subject, with a kind of detection point of building strength degradation degree Analysis method analyzes it.
S1, the model that building structure is established using ANSYS software, the rule according to 50 layers of building fatigue design operating condition and specification It is fixed, load file needed for generating fatigue mechanisms and vibration file；
S2, starting ANSYS-MATLAB interface, check the validity of ANSYS software input file, call ANSYS Software carries out load and shakes the coupling analysis under synergy, obtain load and shake the building synergy Xia50Ceng structure Reaction；
S3, the calculating type that MATLAB software is specified in ANSYS-MATLAB interface, read ANSYS software results text Part generates load file and calculation document needed for MATLAB software calculates according to specified analysis type, is stored in work text Part folder；
S4, the Whole structure model that 50 layers of building simplifies is established in MATLAB software, read in ANSYS-MATLAB interface The fatigue load file and calculation document of generation carry out 50 layers of building strength degradation degree analyzing, obtain load and vibration joint Equivalent static load under effect；
S5, the overall structure simplified model that 50 layers of building are established in MATLAB software are reduced to node quality work For its centroid position；Tired control load, Pile Soil nonlinear model based on fatigue load Designed recurrence period obtain basis Linear stiffness matrix；Based on overall structure simplified model and linear stiffness matrix, at the same apply the obtained fatigue load of analysis and File is arranged in calculating parameter, carries out the overall structure response analysis under load, vibrations load synergy；It is anti-based on overall structure The equivalent stress of each key node of structure, and the strength degradation degree analyzing file of setting should be analyzed to obtain, carry out load and The structural fatigue shaken under synergy operating condition calculates；The multi-state parallel computation file that interface generates is read in, multi-state is carried out Parallel computation；
S6, the structure obtained under different designs load and corresponding vibrations load synergy according to load-intensity curve are strong Spend degree of degeneration；
S7, the brittle criterion according to 50 layers of building structure, obtain the long-term strength degree of degeneration of 50 layers of building structure；
S8,50 layers of building strength degradation degree analyzing model based on semi-monolithic method；
S9, the finite element model that 50 layers of building foundation structure is established using ANSYS software, output obtain the matter of foundation structure Amount and stiffness matrix；
S10, using basic calculation program, read in the foundation structure quality and stiffness matrix in step S9, carry out polycondensation, obtain To 50 layers of building base model matrix；
S11, based on the model matrix in S10,50 layers of building model are established in ANSYS software, according to fatigue design work Load file needed for the regulation of condition and construction standards generates fatigue mechanisms；
S12, starting ANSYS-MATLAB interface, first check the validity of ANSYS software input file, call ANSYS software carries out the structural response analysis under load action, obtains the structural response under load action；
S13, the calculating type that MATLAB software is specified in ANSYS-MATLAB interface, read ANSYS software results text Part generates affiliated 50 layers of building bottom, 50 layers of building load and calculation document needed for calculating according to specified analysis type, deposits It is put into working folder；
S14,50 layers of building foundation structure model are established in MATLAB software, read in 50 layers of building lotus in step S14 Part and the calculation document of publishing papers carry out 50 layers of building load, shake according to vibration element setting vibration spectrum parameter generation random wave is designed 50 layers of building foundation structure response analysis under dynamic load synergy, obtain foundation structure equivalent static load；
Foundation structure finite element model in S15, step S15 in MATLAB software is based on tired control load, Pile Soil Nonlinear model obtains the linear stiffness matrix on basis；
S16, different designs load is obtained using load-intensity curve and shakes 50 layers of building base under element synergy Plinth strength degradation degree；
S17, according to 50 layers of building embrittlement criterion, obtain the long-term strong of load and the building shock effect Xia50Ceng foundation structure Spend degree of degeneration.
The result of each step is transmitted to MATLAB in ANSYS operation, for calculating the load and unit of next step Attribute.
ANSYS and MATLAB exchanges data, first has to handle Research on Interactive Problem well, is generally available following two method:
(1) ANSYS and MATLAB are run simultaneously: needing to establish a flag file.By reading it in ANSYS and program Content judges whether other side is running；A step has been run in ANSYS and MATLAB, has changed flag, tells other side oneself Current end of run, other side can continue to run, otherwise have to wait for.
(2) calling/SYS order executes MATLAB in ANSYS.ANSYS can temporarily cease operation at this time, until MATLAB Terminate operation, right of execution is given back ANSYS.
ANSYS is told to change cell attribute and load change in MATLAB: after importing data in ANSYS, MATLAB can generally create .mac file according to specific physical model, and the APDL such as MPCHG life is then written within this document It enables；Such as " MD.mac " text file is created with C, when EP (end of program) operation, * use, MD.mac is used to come real in ANSYS Now load the change with cell attribute.

Claims (1)

1. a kind of determination method of reinforced concrete building strength degradation degree, which comprises the following steps:
S1, the model that building structure is established using ANSYS software, foundation reinforced concrete building fatigue design operating condition and specification Regulation, load file needed for generating fatigue mechanisms and vibration file；
S2, starting ANSYS-MATLAB interface, check the validity of the ANSYS software input file, described in calling ANSYS software carries out load and shakes the coupling analysis under synergy, obtains described under the load and vibration synergy The reaction of reinforced concrete building structure；
S3, the calculating type that the MATLAB software is specified in the ANSYS-MATLAB interface, read the ANSYS software Destination file generates load file and calculation document needed for the MATLAB software calculates according to specified analysis type, deposits It is put into working folder；
S4, the Whole structure model that the reinforced concrete building simplifies is established in the MATLAB software, described in reading The fatigue load file and calculation document that ANSYS-MATLAB interface generates, carry out the reinforced concrete building strength degradation journey Degree analysis obtains the load and shakes the equivalent static load under synergy, calculated by formula one:
Formula one:
Wherein, V0For the equivalent static load under the load and vibration synergy, V is quiet under the load independent role Power load, i refer in the reinforced concrete building i-th layer, and n is the total number of plies of the reinforced concrete building, xiRefer to described I-th layer of transverse vibration interference coefficient, y in reinforced concrete buildingiRefer to i-th layer in the reinforced concrete building of longitudinal direction Shake interference coefficient, the xiFor the rational greater than 0 and less than 1, the yiFor the rational greater than 0 and less than 1, α is joint Strengthen interference coefficient, the α is the rational greater than 0 and less than 1；
S5, the step S4 specifically include following modeling and calculating step:
A. the overall structure simplified model that the reinforced concrete building is established in the MATLAB software, the reinforcing bar is mixed Solidifying abode house room superstructure is reduced to node mass action in its centroid position；
B. the tired control load based on fatigue load Designed recurrence period, Pile Soil nonlinear model obtain the linear rigidity on basis Matrix；
C. in the overall structure simplified model and the b based on the reinforced concrete building in a basis it is linear Stiffness matrix, while applying fatigue load and calculating parameter setting file that the reinforced concrete building is analyzed, carry out Reinforced concrete building overall structure reaction point under the reinforced concrete building load, vibrations load synergy Analysis；
D. the equivalent stress of each key node of structure, and the strength degradation degree of setting are obtained based on overall structure response analysis Study document, the structural fatigue carrying out the load and shaking under synergy operating condition calculate；
E. the multi-state parallel computation file that interface generates is read in, multi-state parallel computation is carried out；
S6, the structural strength obtained under different designs load and corresponding vibrations load synergy according to load-intensity curve are moved back Change degree；
S7, according to the brittle criterion of the reinforced concrete building structure, obtain the long-term of the reinforced concrete building structure Strength degradation degree；
S8, the reinforced concrete building strength degradation degree analyzing model based on semi-monolithic method；
S9, the finite element model that the reinforced concrete building foundation structure is established using the ANSYS software, output obtain base The quality and stiffness matrix of plinth structure；
S10, using the basic calculation program in the ANSYS software and the ANSYS software MATLAB, read in step S9 Foundation structure quality and stiffness matrix carry out polycondensation, obtain the reinforced concrete building base model matrix；
S11, based on the model matrix in S10, the reinforced concrete building model, foundation are established in the ANSYS software Load file needed for the regulation of fatigue design operating condition and the reinforced concrete building specification generates fatigue mechanisms；
S12, the starting ANSYS-MATLAB interface, first check the validity of the ANSYS software input file, It calls the ANSYS software to carry out the structural response analysis under load action, obtains the structural response under load action；
S13, the calculating type that the MATLAB software is specified in the ANSYS-MATLAB interface, it is soft to read the ANSYS Part destination file generates reinforced concrete described in the affiliated reinforced concrete building bottom needed for calculating according to specified analysis type Abode house room load and calculation document are stored in the working folder；
S14, the reinforced concrete building foundation structure model is established in the MATLAB software, read in step S13 The reinforced concrete building load file and calculation document generate random according to design vibration element setting vibration spectrum parameter Wave carries out the reinforced concrete building foundation structure under the reinforced concrete building load, vibrations load synergy Response analysis obtains foundation structure equivalent static load；
It is non-that foundation structure finite element model in MATLAB software described in S15, the S14 is based on tired control load, Pile Soil Linear model obtains the linear stiffness matrix on basis；
S16, different designs load is obtained using load-intensity curve and shakes the armored concrete under element synergy House foundation strength degradation degree；
S17, according to the reinforced concrete building embrittlement criterion, obtain the armored concrete under the load and shock effect The long-term strength degree of degeneration of house foundation structure.
CN201810362490.8A 2018-04-20 2018-04-20 A kind of determination method of building strength degradation degree Expired - Fee Related CN108846150B (en)

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