Distortion-induced fatigue cracking in unstiffened web gaps is common in steel bridges. Previous research by the Minnesota Department of Transportation (Mn/DOT) developed methods to predict the peak web gap stress and maximum differential deflection based upon field data and finite element analyses from two skew supported steel bridges with staggered bent-plate and cross-brace diaphragms, respe...

Penelitian ini bertujuan untuk mengetahui faktor pertimbangan pemilihan metode erection girder, yang efektif pelaksanaan mempengaruhi proses dan membandingkan girder menggunakan crawler crane launcher girder. Pertama dilakukan pengumpulan data baik primer maupun sekunder, kemudian analisis rencana Pada masing kebutuhan material alat, waktu, biaya mutu pekerjaan. Selanjutnya hasil dari tersebut ...

Taking a prestressed concrete box girder as the research object, aiming at problem that bridge durability is reduced due to appearance of temperature cracks in girder, this paper adopted different types heat insulation materials, and theoretically analyzed structural field under high difference low environment from aspects whether source was set inside which provides reference for technical app...

On the basis of the polyclonal selection algorithm, an improved polyclonal selection algorithm based on negative selection is put forward in this paper. Inspired by the diversity and auto-tolerance of the negative selection, the population diversity is increased by the clone deletion and clone supply to improve the polyclonal selection algorithm. Finally, the optimization design of the crane bo...

Metode pelaksanaan erection steel box girder pada proyek relokasi jembatan antelope km 5+145Bekasi-Jawa Barat merupakan duplikasi Jembatan Antelope yang salah satu jembatancrossing di atas Ruas Jalan Tol Jakarta-Cikampek. eksisting bersinggungan dengan rencana jalurkeret cepat Bekasi-Jawa (KCJB) sehingga perlu direlokasi. Panjang main span termasuk kedua jalanlayang pendekat adalah 300 m, semen...

As part of the vibration budget study for the NLC Main Linac components, the vibration sources in the NLC modules (Girder) are under investigation. The activity is focused on the effect of cooling water flow on the structures (FXB type) stability, the transmission of vibrations to the adjacent components, and the effect of different materials of construction used for the supports. Experimental ...

Lattice-girder floor slabs and double-wall elements have been successfully used in building and industrial construction for decades. These precast elements of 50 – 70 mm thickness serve as permanent formwork for the subsequently added in-situ concrete creating a monolithic structure. The high prefabrication level allows the construction period to be significantly minimized. The main goal is the...

In this paper, the authors used finite element method to investigate longitudinal and transverse shear lag effects effect of aspect ratio on double-chamber cantilever concrete box girder under uniform distributed load. The results show that root section is positive lag, mid-span negative lag. direction, changes appear in girder. at fixed end significantly affected by ratio, degree different par...

This study proposes a novel reduced-order model (ROM), based on the Volterra series, for aerodynamic force of bridge deck section. Moreover, ROM streamlined box girder section Great Belt East Bridge (GBEB) is identified with computational fluid dynamic (CFD) simulations. Furthermore, an analysis method combining and Newmark-β integration established to simulate aeroelastic responses Finally, wi...

Keselamatan dan Kesehatan Kerja merupakan suatu hal yang sangat penting di dunia konstruksi karena bersinggungan langsung dengan pekerja, perhitungan potensi risiko salah dapat mengakibatkan terjadinya kecelakaan kerja terutama kepada para pekerja Indonesia sendiri pada pekerjaan erection girder masih sering terjadi, sekitar 6 insiden terkait terjadi dalam kurun waktu 2017-2021 maka penelitian ...