4 results about "Area ratio" patented technology

To provide a torsion response prediction method and a torsion response prediction device capable of easily evaluating torsion response caused by foundation input motion of a building located on irregular ground.SOLUTION: Calculating respective impedance ratios α γ = (γ 1 * Vs1) / (γ 2 * Vs2) of the stratum structures 1 and 2, where Vs1 and Vs2 are respective shear wave velocities of the stratum structures 1 and 2, and γ 1 and γ 2 are respective wet densities of the stratum structures 1 and 2, and calculating an area ratio β = A1 / (A2 + 2A1) from respective basic cross-sectional areas A1 and A2 of the stratum structures 1 and 2; A response analysis of a one dimensional soil column model is performed with respect to each of the layer structures 1 and 2, maximum displacements D1 and D2 of the grounds of the layer structures 1 and 2 are calculated, a difference in ground displacement Δ D = D1 - D2 is obtained, and a rotation angle θ max of the building caused by a base input motion is calculated using the following equation θ max = = p * (Δ D·L) q·α γ / β using preset coefficients p and q with a base length L of the building.SELECTED DRAWING: Figure 2

A method for evaluating the energy efficiency of a building according to the present invention comprises the steps in which: (a) a first energy efficiency evaluation unit evaluates the energy efficiency of a target building by calculating the area ratio of windows and walls of the target building, and a third energy efficiency evaluation unit evaluates the energy efficiency of the target building on the basis of material information of the windows and walls of the target building; (b) a second energy efficiency evaluation unit evaluates the energy efficiency of the target building on the basis of the shaded area of the target building; (c) an energy efficiency prediction unit creates a digital twin of the target building on the basis of characteristic information of each space of the target building, energy usage information, and information about the weather around the target building, and predicts the energy efficiency of the target building through the digital twin; (d) a fourth energy efficiency evaluation unit calculates the energy efficiency of an energy generation facility installed in the target building, and evaluates the energy efficiency of the target building on the basis of the energy efficiency of the energy generation facility; and (e) the energy efficiency of the target building is derived from a building energy efficiency evaluation program pre-stored in a terminal having a display, and the energy efficiency of the target building and the energy efficiency of the target building evaluated or predicted in steps (a) to (d) are compared.

The invention discloses a building material quality dynamic detection method and system in a construction environment, and relates to the technical field of material quality detection. The method comprises the following steps: acquiring a plurality of contact area ratios and a plurality of load data through a building construction structure diagram; clustering the plurality of brick bodies, determining a plurality of brick body sets of the same kind, and calculating to obtain attributes of the plurality of brick bodies of the same kind; performing optimization adjustment on the initial quality detection index according to the current construction environment parameters and the attributes of the plurality of similar bricks, and determining a plurality of adaptive quality detection indexes; and performing quality detection on the same kind of brick bodies in the plurality of same kind of brick body sets by using the plurality of adaptive quality detection indexes. The technical problems that in the prior art, building material quality detection depends on fixed detection indexes, detection standards cannot be dynamically set in combination with the actual construction environment and the characteristics of the area where the material is located, and consequently the detection practicability and reliability are insufficient are solved, and the technical effect of improving the adaptability and accuracy of quality detection is achieved.

The application discloses a kind of secondary structure sound in building caused by rail transit fast prediction method, comprising: S1, establishing prediction model;S2, determine reference condition and calculate C (f i );S3, calculate T h (f i ) under different room height, T w (f i ) under different window area ratio, T a (f i ) under different room area, T r (f i ) under different room length-width ratio, T i (f i ) under different total number of layers of building, respectively obtain the adjustment value table of T h (f i ), T w (f i ), T a (f i ), T r (f i ) and T l (f i );S4, the secondary structure sound of room to be predicted is predicted;S5, repeat S4, complete the secondary structure sound prediction of other rooms in the same building or any room in different buildings.The method is simple and easy to operate, high efficiency, improve the accuracy and applicability of prediction.