Hasil Pencarian  ::  Simpan CSV :: Kembali

"Penelitian bertujuan untuk membandingkan keefektifan perilaku jembatan i girder dengan u girder akibat pembebanan yang terjadi pada struktur atas jembatan. Jembatan girder dengan panjang 36,6 meter dibebani oleh beberapa pembebanan yaitu berat sendiri, beban mati tambahan, beban lajur ?D?, beban angin, beban rem, temperatur, dan beban gempa. Jembatan menggunakan beton prategang yang mempunyai kabel prategang pada setiap girdernya. Variasi analisis jembatan pada setiap kondisi awal, kondisi kosong, kondisi akhir 1, dan kondisi akhir 2 menghasilkan nilai lendutan, tegangan, gaya dalam, kehilangan prategang, dan volume pekerjaan. Hasil penelitian menunjukkan jembatan u girder mempunyai tingkat keefektifan yang lebih tinggi daripada jembatan i girder pada hasil perbandingan lendutan, tegangan, dan gaya dalam. Tetapi, volume pekerjaan pada jembatan u girder lebih besar daripada jembatan i girder dengan perbandingan volume adalah 9,86%.

---

The objective of this study was to compare the effectiveness of behavior of i girder bridge with u girder due to loading that occurs on top of the bridge structure. Girder bridge with a length of 36.6 meters which is burdened by a dead load, superimposed dead load, lane ?D? load, wind load, load brakes, temperature, and seismic loads. Prestressed concrete bridge using prestressed cable having at each girder. Variation analysis of the bridge at the beginning of each condition, empty condition, final condition 1 and condition 2 yields the value displacement, stress, internal force, loss of prestressed, and volume of works. The results showed u girder bridges have a higher level of effectiveness than i girder bridge of the results of the comparison displacement, stress, and internal force. However, the cost of construction on the u girder bridge is greater than the i girder bridge with comparison volume is 9,86%."

"Jembatan bentang panjang mempunyai perilaku kompleks apabila terkena gempa khususnya pada saat konstruksi sedang dilaksanakan. Pada penelitian ini, Jembatan Kabel Suramadu dipilih untuk menyajikan perilaku jembatan cable-stayed pada setiap tahapan konstruksi yang berjumlah 89 tahapan. Jembatan ditinjau pada 10 tahapan kritis yaitu tahapan ke-4, 9, 18, 27, 36, 45, 54, 63, 74, dan 89 (lengkap).Rekaman gempa terletak pada sepasang gempa arah memanjang struktur jembatan akan dikenai gempa timur - barat (gempa transversal) dan arah melintang struktur jembatan akan dikenai gempa utara - selatan (arah longitudinal) secara terpisah di sekitar Selat Madura yaitu Gempa Banyuwangi (23 Maret 2011), Gempa Jember (14 Februari 2011), dan Gempa Nusadua (18 Maret 2009). Analisis riwayat waktu dan respon spektrum menggunakan perbedaan ketiga elemen pada kabel yaitu elemen truss tension-only, cable linier (equivalent truss element), dan cable nonlinier (catenary cable element). Peninjauan nodal terletak pada pertemuan kabel-menara dan pertemuan kabel-gelagar sedangkan, peninjauan elemen terletak pada kiri dan kanan menara. Hasil penelitian menghasilkan kandungan frekuensi jembatan, periode alami struktur, respon perpindahan, gaya dalam aksial kabel, gaya dalam momen dan geser arah Z pada gelagar, dan tegangan normal kabel.

---

Long-span bridge has a complex behavior when exposed to the earthquake, especially when the construction is being carried out. In this study, Suramadu Cable Bridge chosen to present the behavior of cable-stayed bridge at each stage of construction totaling 89 stages. Bridges are reviewed at ten critical stages. These stages are 4th, 9th, 18th, 27th, 36th, 45th, 54th, 63rd, 74th, and 89th stage (final stage). Recorded earthquake the located on longitudinal direction of the bridge structure will be east - west earthquake (transverse earthquake) and the transverse direction of the bridge structure will be given north - south (longitudinal direction) earthquake separately around the Madura Strait those are Banyuwangi earthquake (March 23, 2011), Jember earthquake (February 14, 2011), and Nusadua earthquake (March 18, 2009). Time history and response spectrum analysis is done by using three different elements on the cable. Those are tension-only truss elements, linear cable (equivalent truss element), and the nonlinear cable (catenary cable element). The review of nodal located in joint tower-cable and joint cable-girder while the review of the element located on the left side and right side of the tower. The results of the study resulted in the bridge's frequency content, the natural period of the structure, the displacement response, axial force in the cable, moment and shear force in the Z direction on the girder, and the normal cable stress."