PRASETYO, DANI PAMULA (2024) DESAIN ALTERNATIF STRUKTUR ATAS FLY OVER PURWOSARI, SURAKARTA DENGAN MENGGUNAKAN STRUKTUR BAJA. S1 thesis, Universitas Mercu Buana Jakarta.
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Abstract
The Purwosari Bridge with a span of 60 m uses PCT girder prestressed concrete bridge material in the upper structure. Steel material is widely used because it has several advantages which are considered more efficient compared to other materials when used as the main structure of a bridge construction, In connection with this, an alternative design for the bridge's upper structure was carried out using steel material using the SAP 2000 application. The result was a reinforced concrete floor plate with a compressive strength of fc' 30 Mpa, 20 cm thick using Fy 400 Mpa D16 - 125 threaded reinforcement bar, field area reinforcement D16 – 100, threaded reinforcement bar Fy 240 Mpa D13 – 140, main girder used steel profile BJ-55 IWF 3000 x 1000 x 25 x 35 mm, diaphragm rod used steel profile BJ37 IWF 400 x 200 x 7 x 11 mm, the connection between the main girders uses 35 mm thick BJ55 plates and type A325 bolts with a diameter of 36 mm, a total of 32 bolts on the wings and 42 bolts on the body, the connections between the diaphragm and the main girder use 7 mm thick BJ-37 plates and type A325 bolts d25 mm with 6 bolts, sliding connector using BJ-55 stud connector d = 20 mm t = 100 mm with a distance of 9 cm with 4 stud connectors in each row. Keyword : Steel, Bridge, Upper Structure, SAP 2000 Jembatan Purwosari segmen bentang 60m menggukanan material jembatan beton prategang PCT girder pada struktur atas. Material baja banyak digunakan karena memiliki beberapa keunggulan yang dinilai lebih efisien dibandingkan dengan material lain apabila digunakan sebagai struktur utama suatu konstruksi jembatan, sehubungan dengan hal tersebut dilakukan desain alternatif dengan struktur atas menggunakan material baja dengan menggunakan aplikasi bantu SAP 2000 v14 didapatkan hasil pelat lantai beton bertulang kuat tekan fc’ 30 Mpa tebal 20 cm menggunakan tulangan ulir Fy 400 Mpa D16 – 125, tulangan daerah lapangan D16 – 100, tulangan ulir Fy 240 Mpa D13 – 140, gelagar utama digunakan profil baja BJ-55 IWF 3000 x 1000 x 25 x 35 mm, batang diafragma digunakan profil baja BJ-37 IWF 400 x 200 x 7 x 11 mm, sambungan antar gelagar utama menggunakan pelat BJ-55 tebal 35 mm dan baut type A325 diameter 36 mm sejumlah 32 baut pada sayap dan 42 baut pada badan, sambungan antar diafragma dengan gelagar utama menggunakan pelat BJ-37 tebal 7 mm dan baut type A325 d25 mm sejumlah 6 baut, penghubung geser menggunakan stud conector BJ-55 d = 20 mm t = 100 mm dengan jarak 9 cm dengan 4 stud connector pada setiap baris. Kata kunci : Baja, Jembatan, Struktur atas, SAP 2000
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