Copy of Modeling Rules for Nonlinear Calculus (5.4.1)

SYMBOLS

f _ce = Average (expected) compressive strength ofconcrete
f _ck = Characteristic compressive strength of concrete
f _co = Compressive strength of unconfined concrete
f _ye = Average (expected) yield strength ofreinforcement steel
f _yk = Characteristic yield strength ofreinforcement steel
f _sy = yield strength of reinforcement steel
G = Constant load effect
Q = Live load effect
E Earthquake effect in the direction of _d ^(X) = (X)
Earthquake effect in the direction of E _d ^(Y) = (Y)
E _d ^(Z) = Vertical earthquake effect

Building carrier system is modeled in three dimensions according to the Article 5.4.1.1 of TBDY . Analysis model is created automatically when any structural element (column, beam, curtain, floor) is entered. Modeling a building element in three dimensions means considering all degrees of freedom of that element in the stiffness matrix. How to automatically define an element's three-dimensional degree of freedom in Çubuk Sonlu Eleman Lokal Aksları and Kabuk Sonlu Eleman Lokal Aksları It is explained in detail.

There are 6 freedoms in total, 3 translation vectors and 3 rotation vectors at one end of the frame elements. In this case, for a 3-dimensional analysis, a node must have 6 deformation results.

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Similarly, there are a total of 6 freedoms, 3 translation vectors and 3 rotation vectors, at the nodes of the shell elements. However, while creating internal force diagrams in frame elements, stress results occur in shell elements.

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In the picture below, an analysis model and deformation shape of a sample structure modeled in 3D can be seen. As you can see, each node has 6 displacement values, 3 of which are translation and 3 rotations.

Deprem Etkisinin Diğer Etkilerle Birleştirilmesi

G + 0.3Q + E _d ^(X) + 0.3E _d ^(Y) + 0.3E _d ^(Z) G + 0.3Q + E _d ^(Y) + 0.3E _d ^(X) + 0.3E _d ^(Z)

G + 0.3Q + E _d ^(X) -0.3E _d ^(Y) + 0.3E _d ^(Z) G + 0.3Q + E _d ^(Y) -0.3E _d ^(X) + 0.3E _d ^(Z)

G + 0.3QE _d ^(X) + 0.3E _d ^(Y) + 0.3E _d ^(Z) G + 0.3QE _d ^(Y) + 0.3E _d ^(X) + 0.3E _d ^(Z)

G + 0.3QE _d ^(X) -0.3E _d ^(Y) + 0.3E _d ^(Z) G + 0.3QE _d ^(Y) -0.3E _d ^(X) + 0.3E _d ^(Z)

The damping rate for single mode and multimode propulsion methods was chosen as 5% in accordance with TBDY Article 5.4.1.3 .

Başlangıç Adımı ve Birbirine Dik Deprem Doğrultuları (5.2.2)will be made. This analysis is a nonlinear analysis in terms of geometry and the second order effects p-δ and p-Δ created by the axial forces in the deformed carrier system are taken into account. Due to the second order effects p-δ and p-Δ, additional internal forces occur in the carrier system.

Yığılı Plastik Davranış ModeliBeton ve Donatı Çeliği için Gerilme-Şekildeğiştirme Bağıntıları

According to Article 5.4.1.5 (b) of TBDY, in the ŞGDT approach of new buildings, the material strength of concrete and reinforcement steel is based on the expected (average) strengths defined in Table 5.1 of the TBDK .

Malzeme modeli olarak Beklenen (ortalama) dayanımları kullanılırken TBDY Bölüm Ek 5A 'da tanımlanan malzeme modellerinde (Beton ve Donatı Çeliği için Gerilme-Şekildeğiştirme Bağıntıları) beton basınç dayanımı f_co, beton beklenen (ortalama) basınç dayanımı f_ce=1.3f_ck değerine eşit olmaktadır. Benzer şekilde donatı çeliği akma dayanımı, f_sy, donatı beklenen (ortalama) akma dayanımı f_ye=1.2f_yk değerine eşit olmaktadır.

Yığılı Plastik Davranış Modeli

In the figure above, TBDY is shown in Figure 5A.1 for wrapped and uncoated concrete, and TBDY is shown in Figure 5A.2 for reinforcement steel material models. The moment-curvature relation used when defining plastic hinges is created according to these material models ( Beton ve Donatı Çeliği için Gerilme-Şekildeğiştirme Bağıntıları ).

In the picture below, there is a moment-curvature relationship and an idealized graph created by using the expected (average) strengths for an element of a new building . After the concrete and reinforcement material are selected, moment-curvature analysis is performed automatically according to the positions of the reinforcement and plastic joints are created automatically.