Perbandingan Penggunaan PCI-Girder H-125 pada Jembatan Sine Proyek Pembangunan Jalur Lintas Selatan (JLS) Lot 6A Tulungagung

Comparison of The Use of H-125 PCI-Girder on Sine Bridge Construction Project South Cross Lane (SCL) Lot 6A Tulungagung

    Jembatan Sine merupakan jembatan yang menggunakan beton prategang atau Prestressed Concrete I Girder (PCI-Girder). Jembatan Sine terdiri dari 4 bentang, salah satunya yakni bentang A1-P1 berukuran 21,70m yang berdasarkan katalog Bridge Productdipilih menggunakan PCI-Girder tipe H-125cm. Bridge Product milik Wika Beton memiliki dimensi PCI-Girder H-125cm yang cukup berbeda pada bagian atas (flange) dibandingkan dengan Bridge Product milik Waskita Precast. Penelitian ini bertujuan untuk membandingkan penggunaan PCI-Girder H-125cm berdasarkan Bridge Product milik Wika Beton dengan Bridge Product milik Waskita Precast berdasarkan hasil perhitungan gaya-gaya dalam, jumlah tendon dan strand, kehilangan gaya prategang, lendutan, kapasitas lentur, dan kapasitas geser. Dari hasil perbandingan didapatkan bahwa PCI-Girder H-125cm produksi Waskita Precast memiliki nilai gaya-gaya dalam yang lebih besar dari produksi Wika Beton. Jumlah strand dari PCI-Girder H-125cm produksi Waskita Precast lebih hemat 7% dengan nilai kehilangan prategang lebih kecil 1,026% daripada produksi Wika Beton. Lendutan dari PCI-Girder H-125cm produksi Waskita Precast lebih kecil 35% dan chamber lebih kecil 10% daripada produksi Wika Beton. PCI-Girder H-125cm produksi Wika Beton lebih baik dalam menahan beban lentur dengan rasio 0,936, sedangkan PCI-Girder H-125cm produksi Waskita Precast lebih baik dalam menahan beban geser dengan rasio 0,993.

Kata kunci : Jembatan, Beton Prategang, PCI-Girder, Bridge Product

    The Sine Bridge at STA 0+325 of the South Cross Line Project (SCL) Lot 6A Sine Beach - Blitar Regency Limit 1 is a bridge that uses prestressed concrete, or Prestressed Concrete I Girder (PCI-Girder). The Sine Bridge consists of 4 spans, one of which is the A1-P1 span measuring 21.70m, which based on the Bridge Product catalog was selected using the H-125cm type PCI-Girder. Wika Beton's Bridge Product has H- 125cm PCI-Girder dimensions that are quite different at the top (flange) compared to Waskita Precast's Bridge Product. This study aims to compare the use of PCI-Girder H-125cm based on Wika Beton's Bridge Product with Waskita Precast's Bridge Product based on the calculation of internal forces, number of tendons and strands, loss of prestressing force, deflection and chamber, bending capacity, and shear capacity. From the comparison, it was found that PCI-Girder H-125cm produced by Waskita Precast has a greater internal force value than Wika Beton's production. The number of strands of PCI-Girder H-125cm produced by Waskita Precast is 7% more efficient with a smaller prestress loss value of 1.026% than Wika Beton's production. The deflection of PCI-Girder H-125cm produced by Waskita Precast is 35% smaller and the chamber is 10% smaller than that of Wika Beton. PCI-Girder H- 125cm produced by Wika Beton is better at resisting flexural load with a ratio of 0.936, while PCI-Girder H-125cm produced by Waskita Precast is better at resisting flexural load with a ratio of 0.936.

Keyword : Bridge, Prestressed Concrete, PCI-Girder, Bridge Product.