Relevant bibliographies by topics / Strong column-weak beam

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers
  5. Reports

Academic literature on the topic 'Strong column-weak beam'

Author: Grafiati
Published: 4 June 2025
Last updated: 15 July 2025

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Journal articles on the topic "Strong column-weak beam"

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Liu, Jing Bo, and Xue Li. "Realization of Strong Column-Weak Beam Failure Mode for Concrete-Filled Square Steel Tubular Frame Structure." Advanced Materials Research 446-449 (January 2012): 424–28. http://dx.doi.org/10.4028/www.scientific.net/amr.446-449.424.

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Strong column-weak beam failure mode is considered to be a preferable mode for its large capability to absorb earthquake energy and prevent collapse. However, for composite frames composed of steel-concrete composite beams and concrete-filled steel tubular (CFST) columns, strong column-weak beam design methods are not given in Chinese codes. The column-to-beam strength ratio is one of the most important factors that influence the failure mode of frame structures. Moreover, large axial compression ratio of columns may cut down the actual bending capacity of columns, and thus has an adverse effect upon the realization of strong column-weak beam failure mode. In order to investigate the influence of column-to-beam strength ratio and axial compression ratio on the failure mode of concrete-filled square steel tubular frame structures, pushover analysis of a five-story three-bay composite frames with various column-to-beam strength ratios and axial compression ratios are carried out. Based on the analysis results, suggestions about the reasonable value of column-to-beam strength ratio with different axial compression ratios of columns are given to ensure the realization of strong column-weak beam failure mode for concrete-filled square steel tubular frame structures.
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Li, Yan Tao, Cheng Xiang Xu, and Guo Feng Du. "Seismic Performance of T-Shaped CFT Column to Steel Frame Beam Connection – Experimental Study." Advanced Materials Research 919-921 (April 2014): 951–59. http://dx.doi.org/10.4028/www.scientific.net/amr.919-921.951.

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The focus of this research program is T-shaped CFT central column to steel frame beam connection. 3 joints with strong columns-weak beams and 1 joint with strong beams-weak columns 1:2 scale specimens were tested under constant axial loads and cyclic horizontal loads. Overall impact of axial force ratio and beam to column linear stiffness ratio on joint failure mechanism, hysteretic behavior, deformation ductility, and energy dissipation capability was investigated. Results showed that the failure mechanism for specimens with strong columns-weak beams was local buckling of the steel beam flanges and formation of the plastic hinges. There was minimum damage on the concrete column and joint panel zone. For a specimen with strong beams-weak columns, there was local buckling fracture on steel tube above and below the joint panel zone. Crushing of the core concrete was also observed with formation of the column hinges. It was found that both axial forces and beam to column linear stiffness ratio had impacts on joint capacity and ductility behavior of the specimens. Experiment results showed that the joint models had deformation ductility factor between 3.39 and 3.91 and viscous damping ratio between 0.46 and 0.51.
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Teddy, Livian, Gagoek Hardiman, N. Nuroji, and Sri Tudjono. "The New Method in Calculating Columns and Beams Dimensions That Meets Requirements of The Strong Column-Weak Beam and Non-Soft Story." Journal of Architectural Design and Urbanism 1, no. 2 (2019): 1. http://dx.doi.org/10.14710/jadu.v1i2.4492.

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Situated at an earthquake prone area, buildings planning in Indonesia must implement earthquake resistant building principles. One of these principles is determining dimensions of columns and beams in the process of architectural designing.This act eventually affects the behaviour of the strong column-weak beam and the probability of bending failure due to soft story. At present time, there are no simple rules architects can use in calculating the dimensions of beams and columns that meet the criteria for strong column-weak beam and non-soft story. This paper is an effort to provide an input to the architects in designing the dimensions of the columns and beams. This research is a review result of three theories namely: 1). The theory of columns and beams preliminary design, 2). The theory of the strong column-weak beam concept, and 3). The theory of soft story and column slenderness. Those theories were then synthesized into a spreadsheet. To meet the criteria for strong column-weak beam and non-soft story, the following procedures must be done : 1). Determine the columns’ dimensions according to 0.15% of the columns’ cumulative tributary area, 2). Determine the beams’ dimensions according to 1/12 of the beams’ span and the beams’ plastic modulus, 3). Determine the columns’ dimensions and the columns’plastic modulus, 4). Determine the columns’ height based on the column slenderness criteria, and 5). Compare the columns plastic modulus and the beams plastic modulus and check whether they meet the criteria “the columns’plastic modulus ≥ 1.2 * the beams’ plastic modulus”.
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Ma, Hua, Chun Yang Liu, Zhen Bao Li, Jian Qiang Han, and Shi Cai Chen. "The Influence of Seismic Input in the Oblique Direction on the Strong-Column Weak-Beam Mechanism for RC Frame." Advanced Materials Research 243-249 (May 2011): 5144–51. http://dx.doi.org/10.4028/www.scientific.net/amr.243-249.5144.

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In current seismic design code of each country in the world, the mainstream of earthquake input for calculating the building is to use X and Y directions conveniently. The X and Y directions are the main axis of the building, and the strong-column weak-beam damage mechanism has been considered only followed to these main axis. However the building response in the oblique direction is higher than in the main axis, and the frequency in the oblique direction of the building is higher than the X or Y direction as well. Moreover the column usually connects with two beams in the orthogonal directions and the strength ratio of the column to beams in the oblique direction is less than in X or Y direction. Therefore it could be the major reason to cause the column-plastic-hinge damage mechanism during the earthquake. In this paper, it is discussed how the seismic input in the oblique direction influence on the strong-column weak-beam damage mechanism for RC frame through the perspectives of the dimensional mechanical analysis, cyclic loading experiment and the finite element analysis for the dimensional column-beam joint, and then proposed that considering the seismic input in the oblique direction is necessary in the future structural design in order to reach the actual strong-column weak-beam mechanism.
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Nie, Xuefei, Shishun Zhang, Tao Jiang, and Tao Yu. "The strong column–weak beam design philosophy in reinforced concrete frame structures: A literature review." Advances in Structural Engineering 23, no. 16 (2020): 3566–91. http://dx.doi.org/10.1177/1369433220933463.

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This article presents a literature review of existing research on the strong column–weak beam design philosophy, which has been widely adopted in the seismic design of frame structures. A comprehensive review of this design philosophy, including its concept and research history, especially factors affecting the accurate calculation of the flexural capacity of beams [Formula: see text] and the determination of the column-to-beam flexural strength ratio [Formula: see text], is presented first. The development of design provisions of four representative countries for this design philosophy is also reviewed. The implementation of strong column–weak beam hierarchy in real structural design is then discussed, and existing problems are pointed out. Finally, different techniques for the seismic retrofit of existing reinforced concrete frames are reviewed.
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Aditya Purnama. "PERENCANAAN ULANG STRUKTUR ATAS MENGGUNAKAN KONSEP TAHAN GEMPA DENGAN SISTEM STRONG COLUMN WEAK BEAM PADA BANGUNAN RUSUNAWA KOTA KEDIRI." JURNAL DAKTILITAS 1, no. 1 (2021): 1–16. http://dx.doi.org/10.36563/daktilitas.v1i1.397.

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ABSTRACT Geologically, Indonesia is located in the Pacific Ring of Fire, which is a series of the most activevolcanoes in the world that stretches along the Pacific plate Because of this, geological disasters often hitIndonesia, both from earthquakes and volcanic eruptions Therefore, it is necessary to redesign thesuperstructure using the concept of earthquake resistance with a strong columnweak beam system in theRusunawa building in the Kediri city.Redesign of rusunawa building in the Kediri city using a special moment reinforced concrete framesystem that refers to the SNI 1726:2012 earthquake regulation and applying a strong column weak beamsystem so that the building can withstand an earthquake well.The result of this redesign is that the building is able to withstand earthquake loads according to theearthquake regulations of SNI 1726:2012 and applies the strong column weak beam system properly, bymaking changes to the beam and column structure design in the Rusunawa building in the Kediri city.
 ABSTRAKSecaral geologis,l Indonesial beradal padal Daerah Cincin Api Pasifik (Pacifik Ring of Fire),yaitu rangkaian gunung berapi paling aktif di dunia yang membentang di sepanjang lempengpasifik. Inilah penyebab bencana geologi sering melanda Indonesia, baik dari gempal bumi maupunletusan gunung berapi.Maka dari itu perlunya melakukan perencanaan ulang struktur atasmenggunakan konsep tahan gempa denganl sistem strongl column weak beam pada bangunanrusunawa kota Kediri.Perencanaanl uIang bangunan rusunawa kota Kediri yang menggunakan sistem rangka betonbertulang pemikul momen khusus yang mengacu pada peraturan gempal SNI 1726:2012 danmenerapkan sistem strong column weak beam agar bangunan gedung mampu bertahan dengan baikketika terjadi gempal bumi. Hasil dari perencanaan ulang ini bangunan mampu menahan beban gempa sesuai peraturangempa SNI 1726:2012 dan menerapkan sistem strong column weak beam denganl baik, denganmelakukan perubahan desain struktur balok dan kolom pada bangunan rusunawa kota Kediri.
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Wardana, Zahra Ramadhani, Saidatul Alfena Putri Asyari, and Wahyu Kartini. "Analisis Hubungan Balok Kolom Beton Bertulang pada Proyek Pembangunan Gedung Laboratorium Biologi UNESA Ketintang Kota Surabaya." Jurnal Rekayasa Sipil dan Lingkungan 7, no. 2 (2023): 129. https://doi.org/10.19184/jrsl.v7i2.38019.

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Frequent structural failures begin with failures in the beam-column connection area. The beam-column connection, especially in the interior, is the most critical part of a reinforced concrete frame structure, so it must be carefully designed to maintain ductile behavior with inelastic response during strong earthquakes. Although Surabaya is not a region with a high earthquake risk, building planning must still take into account that it is resistant to earthquakes. This study was conducted to ascertain whether the requirements of strong column - weak beam and shear strength have been met or not in the column-beam relationship in the UNESA Ketintang Biology Laboratory Building. The goal of this study is to examine the structure's reinforced concrete column-beam interaction. In this study, the analysis was carried out at the interior column beam meeting, with the calculations carried out referring to SNI 2847-2019. The analysis results obtained the value of the factored shear strength (Vu) of 1560.97 kN is smaller than the nominal shear force (Vn) of 1935.87 kN. Then, for the analysis results for strong column weak beam, 867.40 kNm for column bending capacity (Mnc) is greater than 1.2 times the beam bending capacity (Mnb) which is 676.57 kNm. Keywords: shear force, column-beam relationship, interior, joint, strong column-weak beam. Kegagalan struktur yang sering terjadi bermula pada kegagalan di area hubungan balok kolom (HBK). HBK terutama pada bagian interior merupakan bagian paling kritis pada suatu struktur rangka beton bertulang, sehingga harus didesain dengan teliti agar tetap berperilaku daktail dengan respon inelastik pada saat terjadi gempa kuat. Meskipun Surabaya bukan termasuk wilayah dengan resiko gempa tinggi, namun perencanaan gedung tetap harus memperhitungkan agar tahan terhadap gempa. Penelitian ini dilakukan untuk mengetahui apakah hubungan balok kolom pada Gedung Laboratorium Biologi UNESA Ketintang sudah memenuhi konsep strong column weak beam dan persyaratan kuat geser atau sebaliknya. Penelitian ini bertujuan untuk menganalisa hubungan balok kolom beton bertulang pada gedung tersebut. Pada penelitian ini analisa dilakukan pada pertemuan balok kolom interior dengan perhitungan yang dilakukan mengacu pada SNI 2847-2019. Hasil analisa didapat nilai kuat geser terfaktor (Vu) sebesar 1560,97 kN lebih kecil dari gaya geser nominal (Vn) sebesar 1935,87 kN. Lalu, untuk hasil analisa untuk strong column weak beam didapat hasil 867,40 kNm untuk kapasitas lentur kolom (Mnc) lebih besar dari 1,2 kali kapasitas lentur balok (Mnb) yaitu 676,57 kNm. Kata kunci: gaya geser, hubungan balok kolom, interior, joint, kolom kuat-balok lemah
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Prianto, Kusnul, Hariyono Seputro Youngky Pratama, Bayu Achil Sadjab, and Endah Kinarya Palupi. "DISASTER RESILIENCE IN BUILDING CONSTRUCTION THROUGH CONCRETE CASTING METHODS: IMPLICATIONS FOR THE USE OF STRONG COLUMNS AND WEAK BEAMS." Jurnal Pertahanan: Media Informasi ttg Kajian & Strategi Pertahanan yang Mengedepankan Identity, Nasionalism & Integrity 7, no. 3 (2021): 387. http://dx.doi.org/10.33172/jp.v7i3.1217.

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<div><p class="Els-history-head">The difficulty in obtaining the construction of a strong-beam-weak column building will be encountered during the concrete casting work because in the implementation the beam may be cast using a higher quality concrete than that used for column casting. This has the potential to result in the construction of strong weak-beam columns which should be avoided in earthquake-resistant structures. This study aims to find the most effective concrete casting method that results in the construction of strong-weak beam-columns as intended above. Observations were made on the construction work of a four-story concrete construction building. Analysis by comparing all foundry works whose implementation uses ready mixed concrete made from one vendor, with those using different vendors for each casting of different building structural components. The data used are in the form of compressive strength test results for column casting samples and beam casting samples. From these data, a graph of the compressive strength sample of beam casting is made, then it is compared with the graph of the compressive strength sample of column casting. The results of the study concluded that using different vendors for casting different components of the building has a greater chance of producing a weak beam-strong column structure.</p></div>
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Yu, Jian Bing, Zheng Xing Guo, and Dong Zhi Guan. "Low Reversed Cyclic Loading Test for New Precast Concrete Beam to Column Connection." Advanced Materials Research 1079-1080 (December 2014): 160–65. http://dx.doi.org/10.4028/www.scientific.net/amr.1079-1080.160.

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On the basis of the domestic and overseas scholars’ research, it is innovative to put forward a new precast frame beam-to-column connection. One full-scale beam-to-column connection in a precast concrete（PC）frame and a beam-to-column connection in a cast-in-place concrete structures were tested under uni-directional cyclic loading that simulated earthquake-type motions. The new-type beam-to-column joint in a precast concrete frame consisted of cast-in-place columns and precast beams. Test results showed that（a）The property and action of precast connections are similar to the cast-in-place connection, it showed that both precast connections and cast-in-place connection have similar seismic performance; (b) The cracking load of precast connection are similar to the cast-in-place connection; (c) All the columns of all specimens did not destroy, it illustrate that it conform to the strong column weak beam. (d) In this experiment test, because the control factor use the bending capacity of beam, it also play the same plastic hinge mechanism as the traditional component. All the longitudinal reinforcement destruction ahead of stirrup in beams, which should be confirmed the guiding ideology of strong shear weak bending. On the basis of the test results, design considerations for the beam-to column connection were recommended.
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Zhang, Ji Chao, Nan Li, and Lei Ji. "Experimental Study on Seismic Behavior of Pre-Cast Concrete Structure with Cast-In Situ Integral Beam-Column Joint Sub-Assemblage." Applied Mechanics and Materials 71-78 (July 2011): 506–9. http://dx.doi.org/10.4028/www.scientific.net/amm.71-78.506.

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Based on the need of housing industrialization, using full-scale models, this paper investigated the seismic behavior of pre-cast concrete beam-column subassemblies with cast-in-situ monolithic joints under low-cycle reversed loading. The failure pattern, hysteretic characteristic, skeleton curve, ductility and energy dissipation were also analyzed. The result indicated that beam-column joints with longitudinal bars welded at the bottom of beams can meet the requirements of “strong column-weak beam, stronger joint”.
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Dissertations / Theses on the topic "Strong column-weak beam"

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Chen, Cheng Chieh, and 陳政杰. "The Study of Calculations of Ultimate Story Shear and Seismic Assessment Method on Weak Column-Strong Beam Structures." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/58297672532322538687.

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碩士<br>中原大學<br>土木工程研究所<br>89<br>To check the problem of weak story is required by using the calculation of the ultimate story shear of each level in our seismic design code. But, only simply mentioned demand in the new version rule, not clarify how to calculate. Some studies about this topic have provided a set of method to calculate a reasonable ultimate story shear of each level. But that method only can be used in the kind of buildings having the ductility design. However, many old buildings didn’t design by the concept of ductility or poor construction in detail. Therefore, those buildings may have weak column and strong beam, so for no estimation method can be do. This paper improve pre-studies, to develop a method of calculations for ultimate story shears by using the results of ETABS, which is a elastic analysis software, and no matter the structure with ductility design or not. We paid much attention on the seismic capacity of buildings after the Chi-Chi earthquake happened. But according to the current assessment method, some conclusions old buildings have a lot of arguments. This paper based on the vision of“Seismic Capacity Assessment and Popularizing for RC Building”that was 88 year edition and promoted by “Architecture ＆ Building Research Institute, Minster of Interior” to find out the reasons of over-estimated rules and improved it. This study will ensure the assessment more objective and believable.
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Book chapters on the topic "Strong column-weak beam"

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Tao, Lv, Li Yingmin, Li Feng, Li Feng, Pan Cunrui, and Feng Liqiang. "Discussion of “Strong Column—Weak Beam” in Capacity Design Method." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-99-6368-3_30.

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Kushwaha, D., N. Kumar, S. Setia, and P. Lohchab. "Seismic Performance Assessment of RC Hill Buildings Considering Strong Column and Weak Beam Design." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2025. https://doi.org/10.1007/978-981-97-9885-8_30.

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Di, Jiaxing. "Study on Progressive Collapse Resistance Performance of Main Building of Conventional Island in Nuclear Power Plant Based on Corner Column Removal Method." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2024. https://doi.org/10.1007/978-981-97-6238-5_33.

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AbstractIn the event of an accidental collapse of the main plant of the conventional island, it could threaten the safe operation of the nuclear island and even cause a nuclear leakage accident. Therefore, the study of the collapse resistance of the main plant structure of a conventional island nuclear power plant should be of great interest. In this paper, the collapse resistance of conventional island main plant structure is analyzed by Pushdown analysis method, and the damage of beam and column members and the position of plastic hinge when the conventional island main plant structure is subjected to accidental action are simulated by the method of removing members. The analysis results show that the damage of the column increases with the increase of the column span after the removal of the corner columns, and the structural displacement of the upper floors within the beams and failed columns connected to the control nodes will be dispersed with the increase of the vertical load, and the damage will spread to the top of the structure; It can be concluded from the order of the appearance of the plastic hinge: the main plant structural system conforms to the principle of “strong columns and weak beams”, so the main nuclear power plant conventional island studied in this paper The progressive collapse resistance of dismantled corner columns of the structural system of plant has certain guiding significance for practical engineering.
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Kim, Changsoo, and Hong-Gun Park. "Minimum flexural strength of columns for strong column–weak beam design of RC moment frames." In Seismic Analysis and Design of Building Structures. Elsevier, 2025. http://dx.doi.org/10.1016/b978-0-443-29074-9.00007-3.

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Korkmaz, Hasan Hüsnü. "Deprem Hasarlarının Nedenleri ve Dayanıklı Yapılar için Öneriler." In İklim Değişikliği Çerçevesinde Kuzey Kıbrıs Türk Cumhuriyeti’nde Su Yönetimi. Türkiye Bilimler Akademisi, 2024. http://dx.doi.org/10.53478/tuba.978-625-8352-92-4.ch08.

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Although Turkey is in the earthquake zone, it is a country where the majority of the housing stock is not earthquake resistant. While more than 30,000 people lost their lives in the 1999 Marmara earthquake, more than 50,000 people died in the 2023 Kahramanmaraş earthquake. The earthquake affected 11 provinces and a total of 14 million people. The destruction has been very great in Hatay province. It was filed in newly built structures next to the old buildings. Almost 90% of the buildings in the city were either destroyed or caused severe to moderate damage. The existing housing stock is completely problematic from the structural system design to the material details and quality. The problems that started from the choice of parcel geometry continued with the choice of non-continuous and irregular structural system. In addition, errors in the reinforcement details and low concrete strength caused the buildings to collapse after the earthquake. The most common causes of failure in the region can be considered as soft floor, strong beam-weak column formation, insufficient reinforced concrete shear walls and rigidity, irregular structures, short beam and short column formations
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Conference papers on the topic "Strong column-weak beam"

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Ahmed, Ansar, A. Manchalwar, and Srikanth Koniki. "Influence of height of building on strong column-weak beam design." In LOW RADIOACTIVITY TECHNIQUES 2022 (LRT 2022): Proceedings of the 8th International Workshop on Low Radioactivity Techniques. AIP Publishing, 2023. http://dx.doi.org/10.1063/5.0167108.

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Yılmaz, Muhammet, Özkan Hakan, Ali Haydar Bayram, and Ramazan Livaoğlu. "Evaluating strong-column / weak-beam behavior in reinforced concrete structures: Insights from the 2023 Kahramanmaraş earthquakes." In 4th International Civil Engineering & Architecture Conference. Golden Light Publishing, 2025. https://doi.org/10.31462/icearc2025_ce_eqe_263.

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Zhang, ZHipeng, Peizhen Xu, Daiming Gao, Yaguang Zhu, and Ruifeng Nie. "The Study of the Seismic Performance of the Strong-Beam and Weak-Column Shaped Joints of Concrete-Filled Steel Tubular Column and Steel Beams." In 2018 3rd International Conference on Smart City and Systems Engineering (ICSCSE). IEEE, 2018. http://dx.doi.org/10.1109/icscse.2018.00088.

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Gan, Dan, Zheng Zhou, Xuhong Zhou, and Kang Hai Tan. "Square reinforced CFST column to RC beam joint subjected to lateral loading: An investigation using finite element analysis." In 12th international conference on ‘Advances in Steel-Concrete Composite Structures’ - ASCCS 2018. Universitat Politècnica València, 2018. http://dx.doi.org/10.4995/asccs2018.2018.7136.

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Concrete-filled steel tube (CFST) columns have been applied popularly in recent years, where they were connected with reinforced concrete (RC) beams or steel beams in a building. This paper proposes a joint system which connects the square reinforced concrete-filled thin-walled steel tube (RCFTWST) column and RC beam. In the joint system, reinforced bars are located in the square CFTWST column, and stiffeners are welded at adjacent sides of the square steel tube. Besides, the panel zone is strengthened by internal diaphragms. A finite element model (FEM) based on software ABAQUS was developed to evaluate the behavior of the proposed joint system under lateral loading, and parametric analysis was carried out. Based on the analysis results obtained from FEM, some important parameters were chosen. And two specimens were tested under combined axial compression and low-cyclic lateral load to assess the seismic performance of the proposed joint system. The axial load level was chosen as the parameter. Test results showed that all tested specimens performed well up to 5% drift and can satisfy the seismic requirements of “strong-joint weak-component”. In addition, the finite element model (FEM) is verified by comparing with the experimental results. The results can be well predicted by the model.
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Ajmal, M. "Seismic assessment of reinforced concrete building strengthened with CFRP sheets using non-linear static approach." In Civil and Environmental Engineering for Resilient, Smart and Sustainable Solutions. Materials Research Forum LLC, 2025. https://doi.org/10.21741/9781644903414-14.

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Abstract. The gravity load-designed (GLD) reinforced concrete (RC) frames commonly found in Saudi Arabia have limited resistance to lateral loads and are susceptible to column-side sway or soft-story failures during earthquakes. Even in taller buildings where lateral wind loads were considered in the design, it is still crucial to perform a comprehensive seismic evaluation, as higher mode effects can sometimes lead to soft-story mechanisms in the mid to upper levels of the building. The recent seismic event in Saudi Arabia has raised concerns about the safety and vulnerability of RC buildings in the region. This paper presents a performance-based assessment of an existing eight-story RC shear wall building located in Madinah. The building is 8 stories reinforced concrete structure with dome at the top and ribbed plus flat slab system. Nonlinear static pushover analysis was conducted using SAP2000 software, accounting for the inelastic behavior of concrete and steel materials. The shear walls were modeled using mid-pier frame and user defined hinges were assigned. The nonlinear seismic analysis of existing building revealed that shear walls and columns are deficient against the lateral forces and strong beam-weak column mechanism was observed. To meet the seismic and increase the seismic load bearing capacity the building columns and shear walls of the building were retrofitted by Carbon Fiber Reinforced polymer (CFRP) sheets and the seismic performance, strength, and durability of the retrofitted building was evaluated. The study showed that the proposed retrofitting scheme increased the base shear capacity and ductility of the building as well as controlled energy dissipation and strong column-weak beam mechanism were observed in retrofitted building. Also, the load-displacement behavior of the retrofitted building demonstrates a notable enhancement in both strength and stiffness, featuring an increased ultimate base shear capacity and greater deformation capacity prior to reaching the collapse threshold as compared to the existing structure. Overall, the base shear capacity of the existing building is increased by 26% after CFRP retrofitting and performance of the structure is enhanced.
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Chuanping, Liu, Tianluan Liu, and Jian Jia. "Study on bearing structure and joint seismic resistance of large span non-landing arch on high-speed railway station." In IABSE Congress, New York, New York 2019: The Evolving Metropolis. International Association for Bridge and Structural Engineering (IABSE), 2019. http://dx.doi.org/10.2749/newyork.2019.2295.

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&lt;p&gt;The main entrance of Chongqing West Railway Station adopts the non-landing compound arch with a span of 108m. In this paper, the nonlinear finite element theory is applied to analyze the bearing capacity and seismic ductility of the compound arch joints. Low frequency cyclic loading tests are performed on the 1/5 scale model. Based on the calculation and test results, a double beam structure and a section of steel truss are placed in the arch joints to bear the force of the arch. Moreover, the buckling-restrained brace (BRB) is placed in the lower part of the arch that enables most force directly transmit to the foundation of the arch. Unlike BRB’s common use as an inter-column support, it now acts as a buckling constraint support in the large earthquake. For instance, it can be yielded before the frame column to improve earthquake resistance. The research results indicate that the compound arch joint structure successfully accomplishes the seismic design goals of strong joints with weak component. Moreover, the study provides the theoretical basis and design reference for the application of BRB and long-span arch structures in high-speed railway station.&lt;/p&gt;
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Zhurovski, Aleksandar, Borjan Petreski, and Igor Gjorgijev. "IMPROVED SEISMIC ASSESSMENT OF EXISTING RC FRAME STRUCTURES." In 3rd Croatian Conference on Earthquake Engineering. University of Zagreb Faculty of Civil Engineering, 2025. https://doi.org/10.5592/co/3crocee.2025.58.

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The seismic performance of building structures is governed by the lateral stiffness which is provided by the geometrical and material characteristics of their structural elements and their arrangement in plan and elevation. In general, the procedure for designing the structures to withstand the code-prescribed lateral loads is quite straightforward. However, the performance of the building subjected to realistic seismic loading is also important beyond the deterministically defined safety points that ensure life-safety at fixed return periods. Building structures in North Macedonia are designed according to an outdated code that does not consider the modern developments in the field of performance-based earthquake engineering such as ductility of the cross-section. Thus, the ratio of the column dimensions is not a matter of consideration when designing a structure and the weak beam – strong column concept is ignored in the designer’s check list. Therefore, because of the need for open architectural spaces and aligned interior walls and columns, the designers often rotate the shorter cross-section dimension along the longer beam span. With the aim of investigating the effect of the orientation of the columns in plan on the seismic performance of reinforced concrete frame structures, an existing residential building is analyzed. The existing structure is compared with alternatively designed structural models with different column cross-sections or different orientation of the existing column cross-section in plan. The comparison is performed using nonlinear analysis of the existing structures and the proposed models. Then, a simplified probabilistic assessment of the structural configurations is performed, and the results are presented. Finally, the results are used to stress the need for assessment of the existing structures with the modern approaches employed in the more up-to-date design codes and performance-based earthquake engineering principles.
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Borisov, A. B., O. B. Shiryaev, A. McPherson, K. Boyer, C. K. Rhodes, and J. C. Solem. "Stability Analysis of Relativistic and Charge-Displacement Self-Channeling of Intense Laser Pulses." In Shortwavelength V: Physics with Intense Laser Pulses. Optica Publishing Group, 1993. http://dx.doi.org/10.1364/swv.1993.puip58.

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Theoretical modeling of the stability of relativistic and charge displacement self-channeling of high power laser pulses in plasmas leads to the establishment of stability maps for self-channeling propagation of laser pulses. The problem of stability of relativistic and charge displacement self-channeling of intense ultrashort laser pulses in cold undercritical plasmas against small azimuthal perturbations is analyzed. The problem is studied for both an initially uniform plasma and for a preformed plasma column. In the plane of dimensionless parameters ρo = roωp,o/c and η = Po/Pcr, which depends on the initial values of the focal spot radius, power of the laser beam and the unperturbed density of the plasma, the boundary separating the regimeis of the stable self-channeling and of the strong filamentation is defined. It is found that for ρ o ≈ ρeig,o (ρeig,o being the dimensionless radius of the zeroth eigenmode of the studied problem) the relativistic and charge-displacement self-channeling is stable for any value of initial power Po &gt; Pcr. It is also shown that in the case where η ≈ 10, the relativistic and charge-displacement self-channeling is stable for practically any value of ρo. It is found that the location of the boundary separating the two regimes of propagation is essentially independent of the initial curvature of the phase front of the beam. The dependence of the location of the stable region on the parameters governing the amplitude of the azimuthal perturbation is also weak. The results emphasize the extreme importance of the stabilizing role of charge-displacement in these plasma interactions. A procedure for optimization of laser beam and plasma parameters for experimental realization of the relativistic and charge-displacement self-channeling is developed. The proposed method of investigation of the stability and the optimization of the self-channeling of laser pulses can be applied generally to various cases involving nondissapative media with saturating nonlinearities.
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Reports on the topic "Strong column-weak beam"

1

SEISMIC PERFORMANCE OF SPATIAL STEEL BEAM-COLUMN CONNECTIONS. The Hong Kong Institute of Steel Construction, 2022. http://dx.doi.org/10.18057/icass2020.p.125.

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This paper presents a finite element analysis for spatial beam-column connections in steel frame to better understand the structural behavior of spatial connections. After the simulation and validation of experimental results, a total of 7 refined 3D models, including beam-to-column connections at different positions in the steel frame, were created and analyzed cyclically through the nonlinear finite element program ABAQUS to investigate the spatial coupling effect. The momentrotation relationships and TI index distribution across the width of beam flanges, were discussed in detail to elucidate the mechanical performance interaction between strong-axis and weak-axis connections. Results showed that there is obvious interaction between two beams in strong-axis or weak-axis connections, and the plane exterior connections has better hysteresis performance. While the interaction of strong-axis connection and weak-axis connection slightly affected each other’s hysteresis performance, and thus the coupling effect of spatial connections is not evident.
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HYSTERETIC PERFORMANCE OF WEAK-AXIS CONNECTION WITH I-SHAPED PLATES IN STEEL FRAME. The Hong Kong Institute of Steel Construction, 2021. http://dx.doi.org/10.18057/ijasc.2021.17.3.1.

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This paper elucidates numerically the behavior of weak-axis moment connections proposed by welding I-shaped plates in the H-section column to increase connection strength and ductility in steel frame. After validating the numerical methods through comparing the results of numerical analysis and experiments, the effectiveness of the proposed weak-axis connection were examined through comparing to the traditional weak-axis connection. The proposed weak-axis connection could move the highest stresses away from the start-stop points of a weld, and thus preventing the premature brittle fracture of the beam flange welds. The plastic hinge formed away from the beam-column interface, while the local buckling occurred in the weld access holes region in the traditional weak-axis connection. The proposed weak-axis connections can be classified as rigid in a strong-bracing system, and be classified as semi-rigid in weak-supported or unsupported system. And then a series of parametric studies was conducted to better understand the behavior of proposed weak-axis moment connections. The force-displacement relationships, location of the plastic hinge, Mises index (MI), triaxiality index (TI) and rupture index (RI) distributions at the beam flange welds were reported in detail. According to the numerical analysis, the design variables of I-shaped plates and widened flange plate are suggested, along with a design procedure.
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3

ANALYSIS AND DESIGN OF AXIALLY LOADED SQUARE CFST COLUMN TO RC BEAM JOINTS STIFFENED BY DIAGONAL RIBS. The Hong Kong Institute of Steel Construction, 2023. http://dx.doi.org/10.18057/ijasc.2023.19.1.6.

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This work proposes a partially through-beam joint system to connect square concrete-filled steel tubular (CFST) columns and reinforced concrete (RC) beams. In the system, the holes in the steel tube allow longitudinal beam reinforcements to be continuous through the joint zone to achieve direct load-transfer of the beam, and the square steel tube with holes is strengthened by welding diagonal ribs located at the corners of the steel tube. Finite element (FE) analyses on joints with RC beams were carried out based on verified models. The analysis results showed that diagonal ribs welded to the joint tube confined the concrete in the joint zone efficiently and made up for the reduction in axial load capacity caused by the holes of the steel tube, so the joint system can meet the requirements of strong-joint weak-component under axial compression with ease. Finally, mechanics-based models and axial strength equations of joints were proposed, and the predicted results agreed well with the FE results. These results proved that the square CFST column to RC beam joints stiffened by diagonal ribs were feasible and can be applied in engineering practice based on reasonable design.
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