THE EFFECTS OF EARTHQUAKE AND TSUNAMI LOADINGS ON STRUCTURAL BEHAVIOR OF REINFORCED CONCRETE BUILDING

Istrazivanja i projektovanja za privredu ◽

10.5937/jaes0-25655 ◽

2021 ◽

pp. 1-10

Author(s):

I Nyoman Sutarja

Keyword(s):

Reinforced Concrete ◽

Structural Behavior ◽

Building Structures ◽

Building Structure ◽

Earthquake Loads ◽

Drift Ratio ◽

Concrete Building ◽

Earthquake Load ◽

T1 And T2 ◽

Story Building

This study evaluates the effect of earthquake and tsunami loads on structural behavior of reinforced concrete building with varying heights. The purpose of this study is to evaluates the level of resilience of building structures that are designed to withstand earthquake loads when loaded by tsunami loads. Building structure behavior is evaluated based on the amount of internal forces, displacements and drift ratio. In making models of building structures with varying heights where the plans are planned on their own. The building structure model is planned to be resistant to earthquake loads where the evaluation is carried out on the comparison of static earthquake loads with dynamic earthquake loads and the drift ratio between building floors meets the limits permitted by SNI-1726-2012. Furthermore, the same structural model is loaded with tsunami loads which refers to FEMA P646 in 2012. The magnitude of the planned tsunami load is adjusted to the building height variations, which are buildings 3, 5 and 7 floors. The loading done on the building is earthquake load, combination tsunami load 1 (T1) and combination tsunami load 2 (T2). The results are obtained in the 3-story building structure, the drift ratio due to earthquake load, T1 and T2 still meet the inter-floor permit drift ratio. The maximum drift ratio value on the first floor of a 3-storey building structure due to earthquake loads, T1 and T2 are 0.75%, 0.52% and 1.01%, respectively, which are all smaller than the limits of the drift ratio of buildings categorized as risk IV which is 1%. In the structure of buildings 5 and 7 floors, the value of the drift ratio on the first floor due to earthquake load still meets the requirements (<1%), but conversely due to the load of T1 and T2 at the same floor level, the drift ratio of 5-storey buildings is respectively 1, 44% and 2.13%, while in the 7-story building respectively 2.88% and 4.67%. These results indicate that the 5-story and 7-story building structures are unable to withstand lateral forces due to the planned tsunami load (T1 and T2).

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STRUCTURE OF EARTHQUAKE RESISTANT CONCRETE BUILDING WITH DUAL SYSTEM USING SNI 1726: 2019

Neutron ◽

10.29138/neutron.v19i2.30 ◽

2020 ◽

Vol 19 (2) ◽

pp. 1-9

Author(s):

Novi Gita Apriliani ◽

Tony Hartono Bagio

Keyword(s):

Structural Design ◽

Dual System ◽

Main Beam ◽

Building Structures ◽

Building Structure ◽

Structural Concrete ◽

Earthquake Loads ◽

Earthquake Resistant ◽

Concrete Building ◽

Earthquake Resilience

The higher a building, the greater the burden due to lateral forces. In the planning of the building structure of Apartment 88 Avenue Surabaya, a Dual system is used. This building planning is based on the Structural Concrete Requirements for Buildings (SNI 2847: 2019). And for earthquakes based on Earthquake Resilience Planning Procedures for Building and Non- Building Structures (SNI 1726: 2019 ). In the analysis of earthquake loads using dynamic analysis of the Response Specific Trump. The structure is planned to use reinforced concrete construction. The planning method includes the primary structure, namely the dimensioning and reinforcement of the main beam, and the column. And the secondary structure which consists of dimensioning and reinforcing plates, joists. From the results obtained structural design dimensional beam 35/70 cm ( 5D22; 3D22 ), the joist 30/55 cm ( 2D16; 2D16 ), the floor slab 14 cm thick ( D10-275 )

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Pembesaran Gaya Dalam pada Elemen Struktur untuk Berbagai Zona Gempa di Indonesia. (Hal. 26-38)

RekaRacana: Jurnal Teknil Sipil ◽

10.26760/rekaracana.v5i2.26 ◽

2019 ◽

Vol 5 (2) ◽

pp. 26

Author(s):

Kamaludin Kamaludin

Keyword(s):

Structural Analysis ◽

Cross Section ◽

Internal Force ◽

Building Structures ◽

Building Structure ◽

Structural Elements ◽

Concrete Material ◽

Earthquake Loads ◽

Maximum Moment ◽

Earthquake Load

ABSTRAKKombinasi beban pada struktur bangunan harus diperhitungkan dalam mendesain penampang elemen struktur. Hasil kombinasi beban gempa mempengaruhi peningkatan pembesaran gaya-dalamnya terhadap hasil kombinasi beban tanpa gempa. Penelitian ini bertujuan untuk memprediksi pembesaran gaya-dalam akibat beban gempapada menara pandang 6 lantai bermaterial beton dengan 8 model variasi beban, yaitu: beban tanpa gempa, dan beban dengan percepatan 0,2g; 0,4g; 0,6g; 1,0g; 1,2g; 1,5g dan 2g. Analisis struktur dengan software ETABS v.9.7.2 menghasilkan pembesaran lentur sebesar 11,4 untuk tumpuan dan 2,49 kali untuk lapangan; geser sebesar 3,99 kali pada tumpuan dan 40,72 kali pada lapangan; dan normal tidak signifikan perubahannya pada balok. pembesaran gaya-dalam pada kolom tumpuan yaitu sebesar 1,27 kali normal, 663,2 kali geser; 55,84 kali lentur M2 dan 487,2 kali lentur M3. Hasil nilai pembesaran ini dapat digunakan sebagai referensi nilai pembesaran momen maksimum terhadap kombinasi beban tanpa gempa dalam desain awal.Kata Kunci: struktur gedung, beban gempa, pembesaran, momen, geser, normal. ABSTRACTThe combination of loads on building structures must be calculated in designing the cross-section of structural elements. The results of combination of earthquake loads influenced an increasing magnitude of the force againts the results of a combination of without earthquake loads. This study intends to predict the magnification of the internal force due to the without earthquake loads on a 6-story tower with concrete material, with 8 variation models of load such as: load without earthquake, and load with acceleration of 0,2g; 0,4g; 0,6g; 1,0g;, 1,2g; 1,5g; and 2g. Structural analysis using ETABS v9.7.2 software results that the magnification of the flexural is 11,4 and 2,49 times for the center of the beam, and insgnificant changes for normal in the beam. The magnification of internal force in the pedestal column is 1,27 time for normal, 663.2 time for shear, 55.84 times for M2 and 497.2 times for M3. The results of this magnification value can be used as a reference to the value of the maximum moment magnification of a combination without earthquake in the initial design.Keywords: building structure, earthquake load, magnication, moment, shear, norma.

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Research on strength detection and reinforcement technology of concrete building structures

E3S Web of Conferences ◽

10.1051/e3sconf/201913604049 ◽

2019 ◽

Vol 136 ◽

pp. 04049

Author(s):

Na Li ◽

Fangfang Yang ◽

Dongli Wang

Keyword(s):

Reinforced Concrete ◽

Design Concept ◽

Basic Material ◽

Building Structures ◽

Building Structure ◽

Reinforced Concrete Building ◽

Concrete Building

Reinforced concrete is needed in houses, tunnels, garden facilities and so on. The first requirement for buildings is safety. Therefore, no matter what the design concept of buildings and how the structure of buildings changes, concrete as a basic material is indispensable, and it is particularly important to pay attention to the safety of reinforced concrete building structures. Thus, the reinforcement technology of reinforced concrete is derived. In this paper, the method of strength detection of concrete building structure is given first, and on this basis, the reinforcement technology of concrete and soil is deeply studied.

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Optimal tuned direct adaptive controller for seismic protecting of structures

Journal of Intelligent Material Systems and Structures ◽

10.1177/1045389x20988784 ◽

2021 ◽

pp. 1045389X2098878

Author(s):

Amin Hosseini ◽

Touraj Taghikhany ◽

Milad Jahangiri

Keyword(s):

Sensitivity Analysis ◽

Adaptive Control ◽

Optimization Problem ◽

Adaptive Controller ◽

Sensitivity Analyses ◽

Building Structures ◽

Building Structure ◽

The Past ◽

Innovative Method ◽

Story Building

In the past few years, many studies have proved the efficiency of Simple Adaptive Control (SAC) in mitigating earthquakes’ damages to building structures. Nevertheless, the weighting matrices of this controller should be selected after a large number of sensitivity analyses. This step is time-consuming and it will not necessarily yield a controller with optimum performance. In the current study, an innovative method is introduced to tuning the SAC’s weighting matrices, which dispenses with excessive sensitivity analysis. In this regard, we try to define an optimization problem using intelligent evolutionary algorithm and utilized control indices in an objective function. The efficiency of the introduced method is investigated in 6-story building structure equipped with magnetorheological dampers under different seismic actions with and without uncertainty in the model of the proposed structure. The results indicate that the controller designed by the introduced method has a desirable performance under different conditions of uncertainty in the model. Furthermore, it improves the seismic performance of structure as compared to controllers designed through sensitivity analysis.

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