JP4969174B2 - Degradation simulation equipment for elastic-plastic energy absorber - Google Patents

Description

  The present invention relates to a standardized elastic-plastic energy absorber deterioration simulation apparatus for a prefabricated building, an elastic-plastic energy absorber deterioration simulation method, and a building design method using the same.

  Cumulative damage value of elasto-plastic energy absorber for building equipped with elasto-plastic energy frame as load bearing element with elasto-plastic energy absorber, especially for damage prediction due to earthquake of building A technique for diagnosing the deterioration of the elastoplastic energy absorber by accurately and promptly predicting and estimating the above is desired.

  For example, Japanese Patent Laying-Open No. 2005-351742 (Patent Document 1) describes that the cumulative damage value of an elastoplastic energy absorber can be estimated in a peeled state of a paint applied to the elastoplastic energy absorber.

  In addition, the Architectural Institute of Japan, No. 562, p159-p166 (Non-patent Document 1) describes a damage evaluation method for an elastoplastic energy absorber, and describes that load deformation history due to an earthquake affects it. Yes.

JP 2005-351742 A

December 2002, published by the Architectural Institute of Japan, Masato Koyama, Hirofumi Aoki “Architectural Institute of Architectural Institute of Japan, No562, Research on Cumulative Damage Evaluation Index of Steel Members Subjected to Cyclic Deformation” p.159-p.166

  However, although the technique of the above-mentioned Patent Document 1 can estimate the damage of the elasto-plastic energy absorber after the earthquake occurs, it cannot predict the damage of the elasto-plastic energy absorber before the earthquake occurs. There's a problem.

  Further, the technique of Non-Patent Document 1 requires time history response analysis for an assumed earthquake, but the time history response analysis is an individual solution for the seismic wave used for the analysis, and removes the influence of the variation. For this purpose, there is a problem that analysis by a large number of seismic waves is required.

  The present invention solves the above-mentioned problems, and its object is to predict the cumulative damage value of an elastoplastic energy absorber due to an earthquake by analysis and to use it to obtain a desired elastoplastic energy absorber. Deterioration of elasto-plastic energy absorber that can predict the cumulative damage value of elasto-plastic energy absorber without considering the load deformation history that occurs in the building due to earthquake in building design It is intended to provide a simulation device, a method for simulating deterioration of an elastoplastic energy absorber, and a design method for a building using the same.

In order to achieve the above object, a first configuration of an elastoplastic energy absorber deterioration simulation apparatus according to the present invention is a standardized elastoplastic energy absorber deterioration simulation apparatus for a building, comprising: Seismic environment information storage means for storing the earthquake environment information of the construction site, and a building provided with an elasto-plastic energy frame having a standardized elasto-plastic energy absorber, the weight information of the building and the elasto-plastic energy frame The maximum displacement amount of the elastoplastic energy absorber for an assumed earthquake that can occur in the construction site of the building from the building structure information including quantity information and the earthquake environment information stored in the earthquake environment information storage means. A maximum displacement amount calculating means for calculating, a maximum displacement amount of the elastoplastic energy absorber caused by an earthquake, and the elastoplastic energy resulting from the earthquake. Correlation information storage means for storing correlation information with the cumulative damage value of the ghee absorber, maximum displacement amount of the elastic-plastic energy absorber calculated by the maximum displacement amount calculation means, and correlation information storage means The correlation information between the stored maximum displacement amount of the elastoplastic energy absorber and the cumulative damage value is used, without calculating the load deformation history that occurs in each of the elastoplastic energy absorber during the earthquake, And a cumulative damage value calculating means for calculating a cumulative damage value of the elastic-plastic energy absorber.

The second configuration of the elastoplastic energy absorber deterioration simulation apparatus according to the present invention is a standardized elastoplastic energy absorber deterioration simulation apparatus for a building, which is an earthquake environment of a construction site of the building. A building including an earthquake environment information storage means for storing information and a building provided with an elastoplastic energy frame having a standardized elastoplastic energy absorber, including weight information of the building and quantity information of the elastoplastic energy frame Maximum displacement amount for calculating the maximum displacement amount of the elasto-plastic energy absorber for an assumed earthquake that can occur in the construction site of the building from the structure information and the earthquake environment information stored in the earthquake environment information storage means Earthquake type information calculation for calculating earthquake type information of the assumed earthquake from the calculation means and the earthquake environment information stored in the earthquake environment information storage means Correlation information storage means for storing correlation information between a maximum displacement amount of the elastic-plastic energy absorber caused by an earthquake and a cumulative damage value of the elastic-plastic energy absorber caused by the earthquake, The earthquake type information calculated by the earthquake type information calculating means, the maximum displacement amount of the elastic-plastic energy absorber calculated by the maximum displacement amount calculating means, and the elastic-plastic energy absorber stored in the correlation information storage means And using the correlation information between the maximum displacement amount and the cumulative damage value, while calculating the load deformation history occurring in each of the elastic-plastic energy absorber during the earthquake , the cumulative damage of the elastic-plastic energy absorber And a cumulative damage value calculating means for calculating a value.

  Here, the types of earthquakes are shallow inland earthquakes with epicenters where the faults deviate from each other due to active fault fluctuations, and the trenches where a huge plate (rock plate) in the ocean sinks under the plate on the land side. It can be broadly divided into a trench-type earthquake that occurs near the plate boundary and a middle-type earthquake.

In addition, a first configuration of the elastic-plastic energy absorber deterioration simulation method according to the present invention is a standardized elastic-plastic energy absorber deterioration simulation method for buildings, which is a standardized elastic-plastic energy absorption method. A building provided with an elastoplastic energy frame having a body, building structure information including weight information of the building and quantity information of the elastoplastic energy frame, and earthquake environment information of the construction site of the building, Determine the maximum displacement of the elasto-plastic energy absorber for the assumed earthquake that can occur in the construction site, and the maximum displacement of the elasto-plastic energy absorber and the elasto-plastic energy absorption generated by the earthquake prepared in advance during the while using the correlation information between the cumulative damage value of the elastic-plastic energy absorber due to the maximum displacement and the earthquake in the body, the earthquake Without calculating the load deformation history occurring in each of the elastic-plastic energy absorber, and calculates the cumulative damage value of the elastic-plastic energy absorber.

The second configuration of the elastic-plastic energy absorber deterioration simulation method according to the present invention is a standardized elastic-plastic energy absorber deterioration simulation method for buildings, which is a standardized elastic-plastic energy absorption method. A building provided with an elastoplastic energy frame having a body, building structure information including weight information of the building and quantity information of the elastoplastic energy frame, and earthquake environment information of the construction site of the building, The maximum displacement amount of the elastoplastic energy absorber for an assumed earthquake that can occur in a construction site is calculated, the earthquake type information of the assumed earthquake is determined from the earthquake environment information, and the earthquake type information and the The maximum amount of displacement of the plastic energy absorber, the maximum amount of displacement of the elastoplastic energy absorber generated by an earthquake prepared in advance, and the occurrence of the earthquake Without calculating the elastic-plastic energy absorber load deformation history occurring in each of the elastic-plastic energy absorber during the earthquake while using the correlation information, the cumulative damage value of the said elastic-plastic energy absorber The cumulative damage value is calculated.

  The first configuration of the building design method according to the present invention is a building design method provided with an elasto-plastic energy frame having a standardized elasto-plastic energy absorber. The earthquake type information, the maximum displacement amount of the elastic-plastic energy absorber, and the maximum displacement amount of the elastic-plastic energy absorber generated by a pre-made earthquake When the cumulative damage value of the elastoplastic energy absorber calculated from the correlation information with the cumulative damage value of the elastoplastic energy absorber due to the earthquake is larger than a predetermined value, the elastoplastic energy It is characterized by changing the number of frames.

  According to a second configuration of the building design method of the present invention, in the first configuration of the building design method, when the maximum displacement amount is larger than a predetermined value, the elasto-plastic energy frame It is characterized by changing the quantity.

  Here, the cumulative damage value used for diagnosing the deterioration of the elastoplastic energy absorber was determined based on the linear cumulative damage law (Miner law) that evaluates the fatigue life of metals due to fatigue fracture and ductile fracture. This value is “cumulative damage value = 1” as a limit value.

  Here, the maximum amount of displacement of the elasto-plastic energy absorber for an assumed earthquake that can occur in the construction site of the building is, for example, the amount of horizontal displacement between the lower and upper floor beams of the building frame The maximum interlayer displacement (cm) such as, the maximum displacement angle (rad) such as the angle between the column and the beam, the maximum shear deformation (cm) of the elastic-plastic energy absorber, etc. can be applied.

  Here, the standardized elastoplastic energy absorber means an elastoplastic energy absorber whose shape and material are standardized and further, the cumulative damage value can be obtained from its fatigue life characteristics.

  According to the above configuration, the maximum displacement amount calculating means calculates the maximum displacement amount of the building with respect to the assumed earthquake that can occur in the construction site of the building, and is created in advance and stored in the correlation information storage means. It is possible to diagnose the deterioration of the elastic-plastic energy absorber by calculating the cumulative damage value of the elastic-plastic energy absorber from the correlation information between the maximum displacement amount of the elastic-plastic energy absorber and the cumulative damage value. This makes it easy to predict building deterioration.

  In addition, the maximum displacement calculation means calculates the maximum displacement of the building against the assumed earthquake that can occur at the building construction site, while analyzing the generated seismic waves that can be generated at the building construction site. Then, the earthquake type information can be calculated by the earthquake type information calculating means.

  Then, with respect to the earthquake type information calculated by the earthquake type information calculation means by the cumulative damage value calculation means, the maximum displacement amount calculated by the maximum displacement amount calculation means and the elastic force created in advance and stored in the correlation information storage means. By calculating the cumulative damage value of the elastic-plastic energy absorber from the correlation information between the maximum displacement amount of the plastic-energy absorber and the cumulative damage value, it is possible to diagnose the deterioration of the elastic-plastic energy absorber. Easy to predict building deterioration.

  In addition, it becomes easy to design what kind of elastic-plastic energy absorber is adopted in the building, and it is possible to easily estimate the deterioration of the elastic-plastic energy absorber when an earthquake occurs.

  An embodiment of an elastic-plastic energy absorber deterioration simulation apparatus, an elastic-plastic energy absorber deterioration simulation method, and a building design method using the same will be described in detail with reference to the drawings. FIG. 1 is a block diagram of a control system showing the configuration of an elastic-plastic energy absorber deterioration simulation apparatus according to the present invention. FIG. 2 is a diagram of a load-bearing wall equipped with an elastic-plastic energy frame having an elastic-plastic energy absorber as a load-bearing element. FIG. 3 is a diagram illustrating an example of an elastic-plastic energy absorber, FIG. 4 is a diagram illustrating an example of a simulated seismic wave created for each earthquake type, and FIGS. 5 and 6 are for each standard deviation of the phase difference distribution. For each type of simulated earthquake created, the earthquake generates an upper limit curve that envelops the cumulative damage value group for the maximum displacement plotted according to different waveforms of different seismic waves and different building strengths. FIG. 7 and FIG. 8 show how the maximum displacement is set as a correlation between the maximum damage and the cumulative damage value of the elastic-plastic energy absorber caused by the earthquake. FIGS. FIG. 9 is a flowchart showing how the number of elastic-plastic energy frames is changed when the cumulative damage value of the elastic-plastic energy absorber is larger than a predetermined value. It is.

  In FIG. 1, reference numeral 11 denotes a deterioration simulation apparatus for a standardized elastic-plastic energy absorber 6 for a building, which is constituted by a personal computer or the like. Reference numeral 12 denotes an input unit composed of a keyboard, a mouse, and the like, and building construction site information and building structure information are input on a predetermined input screen. Reference numeral 13 denotes a control unit composed of a CPU (Central Processing Unit) and the like. An output unit 14 includes a display, a printing device, and the like.

  Reference numeral 20 denotes an earthquake environment information database (hereinafter referred to as “earthquake environment information DB”) serving as an earthquake environment information storage means for storing earthquake environment information of a building construction site.

  16 includes the weight information of the building and the quantity information of the elasto-plastic energy frame A for the building provided with the elasto-plastic energy frame having the normalized elasto-plastic energy absorber 6 input by the input unit 2 From the building structure information, the building construction site information input by the input unit 2 and the seismic environment information stored in the seismic environment information DB 20, It is a maximum displacement amount calculation unit serving as a maximum displacement amount calculation means for calculating.

Reference numeral 15 denotes an earthquake type information calculation unit that serves as an earthquake type information calculation unit that calculates earthquake type information that can be assumed to occur in the construction site of the building from the earthquake environment information stored in the earthquake environment information DB 20.

  17 is a correlation information storage means for storing correlation information between the maximum amount of displacement of the elastic-plastic energy absorber 6 caused by the earthquake and the cumulative damage value of the elastic-plastic energy absorber 6 caused by the earthquake. It is an information database (hereinafter referred to as “correlation information DB”).

  18 is the earthquake type information calculated by the earthquake type information calculating unit 15, the maximum displacement calculated by the maximum displacement calculating unit 16, and the elasto-plastic energy absorber 6 previously created and stored in the correlation information DB 17. The cumulative damage value calculation unit 18 is a cumulative damage value calculation unit 18 that calculates the cumulative damage value of the elastic-plastic energy absorber 6 from the correlation information between the maximum displacement and the cumulative damage value.

  2 and 3, A is an elasto-plastic energy frame having a standardized elasto-plastic energy absorber (6) attached to a steel building of a medium- and low-rise housing as an example of a load bearing element installed in a building structure ( Seismic element A). Reference numeral 1 denotes an up-and-down beam, and 2 denotes left and right pillars erected between the upper and lower beams 1. Reference numeral 3 denotes a main frame body attached to the left and right columns 2 between the upper and lower beams 1, and reference numeral 4 denotes a connecting frame member installed horizontally at the center between the main frame bodies 3.

  The elastic-plastic energy frame A includes a main frame 3, a connecting frame 5, an elastic-plastic energy absorber 6, a connecting member 7, and an oblique frame 8, and the connecting frame 4 is connected to the main frame 3. The right and left connecting frames 5 and a standardized elastic-plastic energy absorber 6 for a building arranged in the center are connected by a connecting member 7, and the connecting member 7 includes the left and right main frame bodies. A plurality of slanted frame bodies 8 that are obliquely installed and connected at one end to 3 are connected.

  In the present embodiment, for example, the upper and lower beams 1 and the main frame 3 are H-shaped steel (for example, SS400), the left and right columns 2 are rectangular steel pipes, the connecting frame 5 is a rectangular steel pipe (for example, STKR400), and an elastic-plastic energy absorber. 6 is a low yield point steel plate (highly ductile hot rolled mild steel plate), the connecting member 7 is a steel plate (for example, SS400), the slanted frame body 8 is a round steel pipe (for example, STK400), etc. As shown in FIG. 3, the body 6 and the connecting member 7 are fixed by a torcia type high strength bolt 9 (for example, M16 (S10T)) or the like, and the other members are integrally assembled with each other by welding.

  In the embodiment shown in FIG. 3, for example, the elastoplastic energy absorber 6 is formed by pressing a highly ductile hot-rolled mild steel plate into a shape shown in FIG. It consists of a total length of 200 mm, a width of 110 mm at both ends, a width of the constriction of 33.4 mm at the center, and a height of the standing piece of 14 mm. In addition, a constraining member 10 is fixed to both ends of the constriction by a torcia type high-strength bolt 9 or the like, and is configured so that plastic deformation is concentrated on the central portion of the constriction of the elastic-plastic energy absorber 6. .

  The low-yield point steel material that is the material of the elastoplastic energy absorber 6 is generally composed of an alloy of elements such as iron and carbon and other trace amounts of manganese, nickel, phosphorus, sulfur, etc. Low yield point steel can be made by reducing the element content, bringing it closer to pure iron, increasing the crystal grains, or adding a small amount of special elements such as niobium (Nb).

  The mechanical properties of low yield point steel materials compared to general steel materials are such that the yield point is lowered by about half, the elongation capacity is increased, and the tensile strength is lowered. And since it has the same high rigidity as a general steel material, it yields from a small deformation stage for the same force because the yield point is low. Can be absorbed. Therefore, the low yield point steel material has a larger amount of energy absorption at the time of small deformation than a general steel material.

  On the other hand, increasing the amount of steel used to achieve the same strength as a structure using ordinary steel, and making a structure using steel with a low yield point increases the plastic strain energy up to fracture by the amount of high elongation capacity. Therefore, the earthquake resistance at the time of a large earthquake is improved.

  Therefore, by connecting the left and right connecting frame bodies 5 and the central elastic-plastic energy absorber 6 to form the connecting frame material 4, a general steel material having greatly different mechanical properties and a low yield point steel material are combined. By using them properly, it is possible to control the mechanical behavior as a structure as designed by the designer.

  When the elastic-plastic energy absorber 6 disposed in the central portion of the connecting frame member 4 receives an external force exceeding a predetermined value acting on the steel frame due to an earthquake or the like, it yields before other parts and plastically deforms. It is composed of a plastic body designed as follows. The yield strength is designed so that the amount of energy absorption becomes clear by appropriately changing the material, length, shape, etc. of the elastic-plastic energy absorber 6.

  As shown in FIG. 6, the elasto-plastic energy absorber 6 has a maximum displacement amount of the elasto-plastic energy absorber 6 caused by an earthquake (in this embodiment, “maximum interlayer displacement amount”), The correlation with the cumulative damage value of the elasto-plastic energy absorber 6 caused by the earthquake is set in advance and stored and stored in the correlation information DB 17. The correlation takes the type of earthquake as a parameter. The parameter of the earthquake type information is the standard deviation σ of the phase difference distribution obtained by Fourier transforming the seismic wave data of the earthquake.

  Here, the types of earthquakes are shallow inland earthquakes with epicenters where the faults deviate from each other due to active fault fluctuations, and the trenches where a huge plate (rock plate) in the ocean sinks under the plate on the land side. It can be broadly divided into a trench-type earthquake that occurs near the plate boundary and a middle-type earthquake.

  As shown in FIG. 5, for each earthquake type information, the maximum displacement amount (maximum interlayer displacement amount) of the elastic-plastic energy absorber 6 generated by the earthquake and the cumulative damage value of the elastic-plastic energy absorber 6 caused by the earthquake Analyze the time calendar response analysis for each waveform of different seismic waves and different building strengths and plot each of them, and envelop the cumulative damage value group for the plotted maximum displacement (maximum interlayer displacement) The upper limit curve L is set as a correlation between the maximum amount of displacement caused by an earthquake and the cumulative damage value of the elastic-plastic energy absorber 6 caused by the earthquake.

  Then, as shown in FIG. 6, the upper limit curve L for each earthquake type information obtained in FIG. 5 shows the maximum displacement amount (maximum interlayer displacement amount) of the elastic-plastic energy absorber 6 caused by the earthquake, and the elasticity caused by the earthquake. It is created as correlation curve data with the cumulative damage value of the plastic energy absorber 6 and stored in the correlation information DB 17, and using this, the cumulative damage value of the standardized elastic-plastic energy absorber 6 for buildings is used. By calculating, the deterioration simulation of the elastoplastic energy absorber 6 can be performed.

  That is, based on the correlation curve data of FIG. 6 stored in the correlation information DB 17, the maximum displacement calculated by the maximum displacement calculation unit 16 from the building structure information and the earthquake environment information stored in the earthquake environment information DB 20. As the maximum displacement amount (maximum inter-layer displacement amount) of the elastoplastic energy absorber 6 generated by the earthquake, the cumulative damage value calculation unit 18 based on this causes the cumulative damage of the elastoplastic energy absorber 6 caused by the earthquake. A value is calculated and the deterioration of the elastic-plastic energy absorber 6 is simulated.

  Here, assuming that the phase difference distribution of the simulated earthquake is a normal distribution, the type of earthquake of the simulated earthquake is set with its standard deviation σ as a parameter. As parameters of the simulated earthquake, for example, as shown in FIG. 4, when the total data time of the seismic wave is 163.84 seconds, the average value of the phase difference distribution is 81.92 seconds, and the phase difference is 0 to 2π, The standard deviation σ of the seismic wave of the type 1 earthquake is 0.04π as shown in FIG. 4A, the standard deviation σ of the seismic wave of the intermediate type 1 earthquake is 0.15π as shown in FIG. 4B, and the intermediate type 2 earthquake. The standard deviation σ of the seismic wave is 0.25π as shown in FIG. 4 (c), and the standard deviation σ of the seismic wave of the trench-type earthquake is 0.40π as shown in FIG. 4 (d).

  For each of the earthquake types set in this way, 30 different simulated seismic waves are created so that the standard deviation σ of the phase difference of the seismic wave becomes the respective value.

  In the analysis using simulated seismic waves, a time history response analysis is performed using a three-mass system shear spring model corresponding to each of the first to third floors of a medium- and low-rise steel building. For shear springs, load-bearing panels, lightweight cellular concrete (ALC) wall, gypsum board, etc. are considered.

  FIG. 5 shows an example of a response analysis in which each seismic wave composed of a vibration acceleration waveform created corresponding to the phase difference distribution is input for each type of earthquake. In the analysis, the yield shear force coefficient is used as a parameter so that a plurality of results can be obtained when the cumulative damage value is in the range of 0.05 to 1.0 (the maximum value of the cumulative damage value is “1.0”). In addition, as the earthquake type becomes a trench type earthquake as shown in FIG. 5B, the cumulative damage value may not reach 1.0 in the set simulated earthquake. In this case, the input amplitude is increased. The result was obtained.

  The earthquake type information calculation unit 15 calculates earthquake type information that is assumed to be generated in the construction site of the actual building from the earthquake environment information stored in the earthquake environment information DB 20 from various types of earthquakes. For example, earthquake type information is calculated, such as a direct earthquake in the Tokyo area and a trench earthquake in the Tokai region, and the standard deviation σ of the corresponding seismic wave is selected.

  5 (a) and 5 (b), the maximum displacement amount (maximum interlayer displacement amount) and cumulative damage value of the elastic-plastic energy absorber 6 obtained by analyzing the time calendar response by changing the intensity for any one seismic wave. When the relationship is obtained, they are distributed on substantially the same curve.

  FIG. 6 shows correlation information between the maximum displacement amount (maximum interlayer displacement amount) of the elastic-plastic energy absorber 6 and the accumulated damage value stored in the correlation information DB 17. An elastic-plastic energy absorber for each earthquake type using an upper limit curve L, which is an approximate curve of the upper limit values plotted in the correlation between the maximum displacement amount (maximum interlayer displacement amount) of the plastic energy absorber 6 and the cumulative damage value. 6 is the standard deviation σ of the phase difference distribution of the seismic wave (σ = 0.40π, 0.25π, 0.15π,. 04π).

Per To take advantage of the correlation between the maximum displacement and the cumulative damage value elastoplastic energy absorber 6 as described above, at step S ₁ in FIG. 7, first, in step S _2, the seismic type information calculation section 15 maximum displacement of the elasto-plastic energy absorber 6 to the scenario earthquakes are may occur at the construction site of a building for each calculated seismic type information obtained by calculation by the maximum displacement amount calculation unit 16, in step S _3, the maximum displacement corresponding to the type of seismic assumed in step S ₂ - determining cumulative damage value from the cumulative damage value curve.

Then, the the maximum displacement amount determined in Step S _1, the seismic type which has been determined by the step S _2, in step S _3, the bullet from the correlation between the maximum displacement and the cumulative damage value for the type of seismic parameters The cumulative damage value of the plastic energy absorber 6 is obtained.

Next, in the degradation simulation during Design, calculates in step S ₂₁ in FIG. 8, the maximum displacement of the elasto-plastic energy absorber 6 to the scenario earthquake by known limit strength calculation method (maximum interlayer displacement). In step S ₂₂ at the same time, the maximum amount of displacement is calculated seismic type information, obtained in step S ₂₁ by the earthquake type information calculation section 15 from the seismic environment construction site stored in the seismic environment information DB 20, the step S ₂₂ in an earthquake type information obtained at step S _23, to predict the cumulative damage value elastoplastic energy absorber 6 from the correlation between the maximum interlayer displacement and the cumulative damage value for the seismic type information as a parameter.

If it is difficult to determine the type of earthquake from the seismic environment information DB 20 in step ₂₂ , for the sake of convenience, in this step ₂₂ , the trench type earthquake on the safe side is correlated with the maximum interlayer displacement and the cumulative damage value. As a result, the cumulative damage value of the elastic-plastic energy absorber 6 is predicted.

  As a building design method, when the cumulative damage value of the elastic-plastic energy absorber 6 calculated by the cumulative damage value calculation unit 18 of the deterioration simulation apparatus 11 is larger than a predetermined value for the building, the elastic-plastic energy is used. If the maximum displacement amount calculated by the maximum displacement amount calculation unit 16 of the deterioration simulation device 11 is greater than a predetermined value for the building after the structural calculation is completed and the structure calculation is completed, the elastoplastic energy Change the quantity of frame A.

That is, in step S ₃₁ in FIG. 9, to acquire the seismic environment information construction site from seismic environment information DB20 previously stored, in step S _32, as a target value, assumed earthquakes are may occur in building construction site And the maximum damage amount δa and the cumulative damage value Da of the elastic-plastic energy absorber 6 are set.

In step S _33, earthquake environmental information to determine or calculate the size and type of scenario earthquake from the stored seismic environment information DB 20, the step S elastoplastic energy rack structure equipped with elastoplastic energy absorber 6 in ₃₄ A set the quantity, in step S _35, to calculate the maximum displacement amount δ by the maximum displacement amount calculation unit 16.

On the other hand, in step S ₃₆ , the maximum displacement amount of the elastoplastic energy absorber 6 generated by the earthquake prepared in advance and the elastoplastic energy resulting from the earthquake for the magnitude and type of the assumed earthquake set in step S _33. determining the correlation between the cumulative damage value of the absorption body 6, in step S _37, calculates the cumulative damage value D elastoplastic energy absorber 6 by the cumulative damage value calculation unit 18.

Then, in step S _38, the cumulative damage value D elastoplastic energy absorber 6 which is calculated by the cumulative damage value calculation unit 18 in the step S _37, elastoplastic energy absorber set as a target value in the step S ₃₂ The cumulative damage value Da of the elastoplastic energy absorber 6 set as a target value by the cumulative damage value D of the elastoplastic energy absorber 6 calculated by the cumulative damage value calculation unit 18 is compared with the cumulative damage value Da of FIG. If more greater after changing the number of elastic-plastic energy rack assembly a proceeds to step S _34, repeating the steps _{S 35, S 37, S 38} , calculated by the cumulative damage value calculator 18 When the cumulative damage value D of the elastoplastic energy absorber 6 becomes equal to or less than the cumulative damage value Da of the elastoplastic energy absorber 6 set as the target value, the process is terminated.

Further, in step S ₃₈ , in addition to the comparison of the cumulative damage values of the elastic-plastic energy absorber 6 described above, the maximum displacement amount δ calculated by the maximum displacement amount calculation unit 16 in step S _{35 as} necessary. when the by comparing the maximum displacement δa set as a target value in step S _32, when the maximum displacement amount calculated by the maximum displacement amount calculating section 16 [delta] is greater than the maximum displacement δa set as the target value , it said after changing the quantity of elastoplastic energy rack assembly a proceeds to step S _34, step S _35, repeating the S _37, S _38, the maximum displacement amount calculated by the maximum displacement amount calculating section 16 [delta] When the value becomes equal to or less than the maximum displacement amount δa set as the target value, the process is terminated.

  As an application example of the present invention, it can be applied to a standardized elastoplastic energy absorber deterioration simulation apparatus for buildings, an elastoplastic energy absorber deterioration simulation method, and a building design method using the same. Elasto-plastic energy absorber deterioration simulation device equipped in a standardized building designed in advance assuming a floor damaged by an earthquake, an elastic-plastic energy absorber deterioration simulation method, and a building using the same Suitable for design method.

FIG. 1 is a block diagram of a control system showing the configuration of an elastic-plastic energy absorber deterioration simulation apparatus according to the present invention. It is a figure which shows the structure of the load-bearing wall equipped with the elastic-plastic energy frame which has an elastic-plastic energy absorber as a load-bearing element. It is a figure which shows an example of the elastic-plastic energy absorber. It is a figure which shows an example of the simulated seismic wave produced according to the type of earthquake. For each type of simulated earthquake created for each standard deviation of the phase difference distribution, an upper bound that envelops a group of cumulative damage values for the maximum displacement plotted according to different seismic waveforms and different building strengths It is a figure which shows a mode that a curve is set as a correlation with the maximum amount of displacement which generate | occur | produces by this earthquake, and the cumulative damage value of the elastic-plastic energy absorber resulting from this earthquake. For each type of simulated earthquake created for each standard deviation of the phase difference distribution, an upper bound that envelops a group of cumulative damage values for the maximum displacement plotted according to different seismic waveforms and different building strengths It is a figure which shows a mode that a curve is set as a correlation with the maximum amount of displacement which generate | occur | produces by this earthquake, and the cumulative damage value of the elastic-plastic energy absorber resulting from this earthquake. It is a flowchart which utilizes the correlation between the maximum displacement amount of an elastic-plastic energy absorber and a cumulative damage value. It is a flowchart which utilizes the correlation between the maximum displacement amount of an elastic-plastic energy absorber and a cumulative damage value. It is a flowchart which shows a mode that the quantity of an elastic-plastic energy frame is changed when the cumulative damage value of an elastic-plastic energy absorber is larger than a predetermined value.

A ... Elasto-plastic energy frame (seismic element)
L ... Upper limit curve 1 ... Vertical beam 2 ... Left / right column 3 ... Main frame 4 ... Connection frame 5 ... Connection frame 6 ... Elasto-plastic energy absorber 7 ... Connection member 8 ... Diagonal frame
11… Deterioration simulation equipment
12 ... Input section
13 ... Control part
14 ... Output section
15 ... Earthquake type information calculator
16… Maximum displacement calculator
17 ... correlation information DB
18 ... Cumulative damage value calculator
20 ... Earthquake environment information DB

Claims (6)

A standardized elastoplastic energy absorber deterioration simulation device for buildings,
An earthquake environment information storage means for storing earthquake environment information of the construction site of the building;
The building structure information including the weight information of the building and the quantity information of the elastic-plastic energy frame for the building provided with the elastic-plastic energy frame having the standardized elastic-plastic energy absorber, and the earthquake environment information storage means Maximum displacement amount calculating means for calculating the maximum displacement amount of the elastoplastic energy absorber with respect to the assumed earthquake that can occur in the construction site of the building from the stored earthquake environment information,
Correlation information storage means for storing correlation information between the maximum amount of displacement of the elastoplastic energy absorber caused by an earthquake and the cumulative damage value of the elastoplastic energy absorber caused by the earthquake;
The maximum displacement amount of the elastic-plastic energy absorber calculated by the maximum displacement amount calculation means, and the correlation information between the maximum displacement amount of the elastic-plastic energy absorber and the cumulative damage value stored in the correlation information storage means, Without calculating the load deformation history that occurs in each of the elastoplastic energy absorber during the earthquake while using the cumulative damage value calculation means for calculating the cumulative damage value of the elastoplastic energy absorber,
An apparatus for simulating deterioration of an elastic-plastic energy absorber, comprising: A standardized elastoplastic energy absorber deterioration simulation device for buildings,
An earthquake environment information storage means for storing earthquake environment information of the construction site of the building;
The building structure information including the weight information of the building and the quantity information of the elastic-plastic energy frame for the building provided with the elastic-plastic energy frame having the standardized elastic-plastic energy absorber, and the earthquake environment information storage means Maximum displacement amount calculating means for calculating the maximum displacement amount of the elastoplastic energy absorber with respect to the assumed earthquake that can occur in the construction site of the building from the stored earthquake environment information,
Earthquake type information calculating means for calculating earthquake type information of the assumed earthquake from earthquake environment information stored in the earthquake environment information storage means;
Correlation information storage means for storing correlation information between the maximum amount of displacement of the elastoplastic energy absorber caused by an earthquake and the cumulative damage value of the elastoplastic energy absorber caused by the earthquake;
The earthquake type information calculated by the earthquake type information calculation means, the maximum displacement amount of the elastic-plastic energy absorber calculated by the maximum displacement amount calculation means, and the elastic-plastic energy absorption stored in the correlation information storage means The correlation between the maximum displacement of the body and the cumulative damage value is used, while calculating the load deformation history occurring in each of the elastoplastic energy absorbers during the earthquake, and the accumulation of the elastoplastic energy absorbers A cumulative damage value calculating means for calculating a damage value;
An apparatus for simulating deterioration of an elastic-plastic energy absorber, comprising: A method for simulating deterioration of a standardized elastic-plastic energy absorber for buildings,
Building structure information including weight information of the building and quantity information of the elasto-plastic energy frame for a building provided with an elasto-plastic energy frame having a standardized elasto-plastic energy absorber, and an earthquake of the construction site of the building Determine the maximum displacement of the elasto-plastic energy absorber for an assumed earthquake that can occur in the construction site of the building from the environmental information;
Correlation between the maximum amount of displacement of the elastoplastic energy absorber, the maximum amount of displacement of the elastoplastic energy absorber generated by a previously prepared earthquake, and the cumulative damage value of the elastoplastic energy absorber caused by the earthquake And calculating a cumulative damage value of the elastoplastic energy absorber without calculating a load deformation history occurring in each of the elastoplastic energy absorber during the earthquake while using the information. Absorbent deterioration simulation method. A method for simulating deterioration of a standardized elastic-plastic energy absorber for buildings,
Building structure information including weight information of the building and quantity information of the elasto-plastic energy frame for a building provided with an elasto-plastic energy frame having a standardized elasto-plastic energy absorber, and an earthquake of the construction site of the building While calculating the maximum displacement amount of the elastoplastic energy absorber for the assumed earthquake that can occur in the construction site of the building from the environment information, and determining the earthquake type information of the assumed earthquake from the earthquake environment information,
The earthquake type information, the maximum displacement amount of the elastoplastic energy absorber, the maximum displacement amount of the elastoplastic energy absorber generated by a previously prepared earthquake, and the accumulation of the elastoplastic energy absorber caused by the earthquake Calculating the cumulative damage value of the elastoplastic energy absorber without calculating the load deformation history occurring in each of the elastoplastic energy absorber during the earthquake while using the correlation information with the damage value. A characteristic deterioration simulation method of an elastic-plastic energy absorber. A method of designing a building provided with an elastoplastic energy frame having a standardized elastoplastic energy absorber,
5. The building according to claim 4, wherein the earthquake type information, the maximum displacement of the elastic-plastic energy absorber, and the elastic-plastic energy absorption generated by the earthquake prepared in advance are calculated for the building. When the cumulative damage value of the elastic-plastic energy absorber calculated from the correlation information between the maximum body displacement and the cumulative damage value of the elastic-plastic energy absorber due to the earthquake is larger than a predetermined value And a method for designing a building, wherein the quantity of the elasto-plastic energy frame is changed. 6. The building design method according to claim 5, wherein when the maximum displacement amount is larger than a predetermined value, the quantity of the elastoplastic energy frame is changed.

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