Orthotropic plates with dynamic vertical seismic load modeled as multi line

Q2 Materials Science

Engineering Solid Mechanics Pub Date : 2023-01-01 DOI:10.5267/j.esm.2023.1.002

Toni Hartono Bagio, S. W. Alisjahbana, H. Darjanto, Najid Najid

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引用次数: 0

Abstract

Calculation plate floor concrete, using a static load which is a gravity load consisting of a live load and a dead load, with various of boundary conditions, floor slabs are orthotropic plate, and rarely account for dynamic loads due to vertical seismic loads, with other boundary conditions, such as Clamped, simply supported, ES (Elastic Support), ER (Elastic Restraint), and ESR (Elastic Support and Restraint). Analytical solution based on the Modified Bolotin Method to analyze floor slab under Vertical Peak Ground Acceleration (PGAv), the natural frequency solution based on auxiliary Levy’s type problems. Dynamic vertical seismic loads using multiline, first line at 0 < t < 0.5 is linear equation, second line at 0.05 < t < 0.15 is quadratic equation, third line 0.15 > t < 0.6 is sextic equation, last line, t > 0.6 is linear equation, vertical seismic load with two conditions far fault and near fault, multi-line equation are depending on (PGAv/g). A numerical example is given, for various boundary conditions, and far fault, translational stiffness (kx, ky) and rotational stiffness (cx ,cy), from the results of plate calculations due to dynamic vertical seismic loads with 5 types of edge support, ES (elastic support) is the best result.

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正交各向异性板的动力竖向地震荷载为多线模型

计算楼板混凝土，采用静荷载，即由活荷载和恒荷载组成的重力荷载，具有各种边界条件，楼板为正交各向异性板，很少考虑由于垂直地震荷载而产生的动荷载，具有其他边界条件，如夹紧，简支，ES(弹性支撑)，ER(弹性约束)和ESR(弹性支撑和约束)。基于改进Bolotin法分析楼板在垂直峰值地加速度作用下的解析解，基于辅助Levy型问题的固有频率解。竖向地震荷载采用多线法，第一行在0 < t < 0.5处为线性方程，第二行在0.05 < t < 0.15处为二次方程，第三行0.15 > t < 0.6处为六次方程，最后一行，t > 0.6处为线性方程，竖向地震荷载有远断层和近断层两种条件，多线方程均依赖于(PGAv/g)。给出了数值算例，在不同的边界条件下，远断层、平移刚度(kx, ky)和转动刚度(cx,cy)，从5种边缘支承的竖向地震动力荷载作用下的板计算结果来看，ES(弹性支承)的结果最好。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Engineering Solid Mechanics Materials Science-Metals and Alloys

CiteScore

3.00

自引率

0.00%

发文量

期刊介绍： Engineering Solid Mechanics (ESM) is an online international journal for publishing high quality peer reviewed papers in the field of theoretical and applied solid mechanics. The primary focus is to exchange ideas about investigating behavior and properties of engineering materials (such as metals, composites, ceramics, polymers, FGMs, rocks and concretes, asphalt mixtures, bio and nano materials) and their mechanical characterization (including strength and deformation behavior, fatigue and fracture, stress measurements, etc.) through experimental, theoretical and numerical research studies. Researchers and practitioners (from deferent areas such as mechanical and manufacturing, aerospace, railway, bio-mechanics, civil and mining, materials and metallurgy, oil, gas and petroleum industries, pipeline, marine and offshore sectors) are encouraged to submit their original, unpublished contributions.