Evaluasi perancangan sambungan rigid kolom dasar rangka baja di atas rangka beton bertulang menggunakan analisis pushover = Evaluation of rigid column base connection on steel frames above reinforced concrete frames using pushover analysis
Andy Prabowo Pho;
Yuskar Lase, supervisor; Josia Irwan Rastandi, examiner; Katili, Irwan, examiner; Essy Arijoeni Basoenondo, examiner
([Publisher not identified]
, 2015)
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[ABSTRAK Adanya peningkatan KLB (Koefisien Lantai Bangunan) pada daerah padat diJakarta, memungkinkan para pemilik gedung melakukan perluasan bangunansecara vertikal dengan menambah struktur baja di atas struktur beton bertulangeksisting. Seringkali sambungan rigid dipakai pada sambungan kolom dasarstruktur baja di atas struktur beton dengan mengasumsikan terjadi hubunganmenerus antara baja dengan beton. Pada kenyataanya asumsi ini belum tentubenar akibat dari kemampuan sambungan sesungguhnya yang terbatas olehkapasitas dan kekakuannya. Sehingga asumsi tersebut perlu dievaluasikebenarannya demi menjaga perilaku struktur dan sambungan.Untuk itu, penelitian ini melakukan evaluasi hasil perancangan sambungan rigidpada dasar kolom baja dengan memodelkan sambungan menjadi pegas yangmenghubungkan struktur baja dan struktur beton. Kekakuan rotasi sambungandimodelkan secara non-linier untuk mendapatkan perilaku pasca leleh dari analisispushover. Kekakuan sambungan diperoleh dari konfigurasi sambungan hasilperancangan yang melibatkan nilai overstrength factor (Wo) sesuai ketentuanAISC 341. Pada penelitian ini terdapat 7 variasi kekakuan sambungan yangdidasarkan variasi Wo pada kombinasi gaya-gaya di sambungan dan mutu angkur(Fu) pada nilai Wo tertentu.Hasil penelitian menunjukkan penurunan besarnya kekakuan sambungan akibatpenurunan nilai Wo tidak mengurangi aksi sambungan rigid. Adanya variasi nilaiWo pada perancangan sambungan rigid tidak berpengaruh langsung nilai R dan Wodari hasil pushover. Adanya variasi mutu angkur (Fu) juga tidak berpengaruhsignifikan pada perilaku struktur. Hanya sambungan yang didesain dengan Wo = 1menunjukkan perilaku non linier dan dimungkinkan terjadinya gagal geser. Untukmenjaga kekuatan di sambungan saat terjadi gempa di luar rencana pada strukturdan menjamin agar sambungan tetap berperilaku elastik, sambungan perludidesain dengan menggunakan Wo minimal sebesar 1,5. ABSTRACT An increase in Floor Area Ratio (KLB) in dense areas of Jakarta, enablingbuilding owners to extend their building vertically by adding the steel framestructures above the existing reinforced concrete structures. A rigid connection ofsteel column bases above the concrete structures is often used by assuming acontinous joint between steel and concrete. In the fact, this assumption is notnecessarily true since the connection behaviour is limited to the capacity andstiffnesses. This may lead to evaluate the assumption so the overall structural andconnection behaviour are controlled.Therefore, this research evaluates the rigid connection design by modeling thecolumn base connections using spring connecting steel frame structures andconcrete frame structures. The non linear rotational stiffness of the spring ismodelled to obtain post yielding behavior from the pushover analysis. Theconnection stiffnesses are provided from connection designs involvingoverstrength factor (Wo) as prescribed in AISC 341. There are 7 connectionstiffness variations are built in this research based on Wo variations on loadingcombinations and anchor grade variations (Fu) for certain value Wo.The results showed a decrease in connection stiffness due to reduction value of Woindependent to the connection rigidity actions. Variation of Wo in the rigidconnection design has no direct impact on the value of R and Wo from pushoveranalysis. The anchor grade variations has no significant effect on the structuralperformance. The non linear behaviour and possibility of shear failure of theconnections are happened only when using Wo = 1. The connections shall bedesigned by minimum Wo = 1,5 to ensure the connection strength and theconnection behavior still remains elastically when a greater earthquake force issubjected to the structure;An increase in Floor Area Ratio (KLB) in dense areas of Jakarta, enablingbuilding owners to extend their building vertically by adding the steel framestructures above the existing reinforced concrete structures. A rigid connection ofsteel column bases above the concrete structures is often used by assuming acontinous joint between steel and concrete. In the fact, this assumption is notnecessarily true since the connection behaviour is limited to the capacity andstiffnesses. This may lead to evaluate the assumption so the overall structural andconnection behaviour are controlled.Therefore, this research evaluates the rigid connection design by modeling thecolumn base connections using spring connecting steel frame structures andconcrete frame structures. The non linear rotational stiffness of the spring ismodelled to obtain post yielding behavior from the pushover analysis. Theconnection stiffnesses are provided from connection designs involvingoverstrength factor (Wo) as prescribed in AISC 341. There are 7 connectionstiffness variations are built in this research based on Wo variations on loadingcombinations and anchor grade variations (Fu) for certain value Wo.The results showed a decrease in connection stiffness due to reduction value of Woindependent to the connection rigidity actions. Variation of Wo in the rigidconnection design has no direct impact on the value of R and Wo from pushoveranalysis. The anchor grade variations has no significant effect on the structuralperformance. The non linear behaviour and possibility of shear failure of theconnections are happened only when using Wo = 1. The connections shall bedesigned by minimum Wo = 1,5 to ensure the connection strength and theconnection behavior still remains elastically when a greater earthquake force issubjected to the structure, An increase in Floor Area Ratio (KLB) in dense areas of Jakarta, enablingbuilding owners to extend their building vertically by adding the steel framestructures above the existing reinforced concrete structures. A rigid connection ofsteel column bases above the concrete structures is often used by assuming acontinous joint between steel and concrete. In the fact, this assumption is notnecessarily true since the connection behaviour is limited to the capacity andstiffnesses. This may lead to evaluate the assumption so the overall structural andconnection behaviour are controlled.Therefore, this research evaluates the rigid connection design by modeling thecolumn base connections using spring connecting steel frame structures andconcrete frame structures. The non linear rotational stiffness of the spring ismodelled to obtain post yielding behavior from the pushover analysis. Theconnection stiffnesses are provided from connection designs involvingoverstrength factor (Wo) as prescribed in AISC 341. There are 7 connectionstiffness variations are built in this research based on Wo variations on loadingcombinations and anchor grade variations (Fu) for certain value Wo.The results showed a decrease in connection stiffness due to reduction value of Woindependent to the connection rigidity actions. Variation of Wo in the rigidconnection design has no direct impact on the value of R and Wo from pushoveranalysis. The anchor grade variations has no significant effect on the structuralperformance. The non linear behaviour and possibility of shear failure of theconnections are happened only when using Wo = 1. The connections shall bedesigned by minimum Wo = 1,5 to ensure the connection strength and theconnection behavior still remains elastically when a greater earthquake force issubjected to the structure] |
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No. Panggil : | T44601 |
Entri utama-Nama orang : | |
Entri tambahan-Nama orang : | |
Entri tambahan-Nama badan : | |
Subjek : | |
Penerbitan : | [Place of publication not identified]: [Publisher not identified], 2015 |
Program Studi : |
Bahasa : | ind;eng |
Sumber Pengatalogan : | |
Tipe Konten : | text |
Tipe Media : | unmediated ; computer |
Tipe Carrier : | volume ; online resource |
Deskripsi Fisik : | xxi, 158 pages : illustration ; 28 cm. + appendix |
Naskah Ringkas : | |
Lembaga Pemilik : | Universitas Indonesia |
Lokasi : | Perpustakaan UI, Lantai 3 |
No. Panggil | No. Barkod | Ketersediaan |
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T44601 | 15-18-911382703 | TERSEDIA |
Ulasan: |
Tidak ada ulasan pada koleksi ini: 20414186 |