The segmental prestressed concrete box girder of Koror-Babeldaob (KB) Bridge in Palau, which had the record span of 241 m (791 ft.), presents a striking paradigm of serviceability loss due to excessive multi-decade deflections. The data required for analysis have recently been released and are here exploited to show how the analysis and design could be improved. Erected segmentally in 1977, thi...

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...

16. Abstract Four scale microconcrete model bridges were tested. Experimental variables included span, skew angle, stiffness, location and number of diaphragms. Service load level behavior was studied under static, cyclic and impact loads with successive removal of diaphragms. Behavior at overload and ultimate load conditions was documented from ultimate static and impact load tests. Characteri...

The excessive deflection of large-span cantilever cast prestressed concrete (LCCPC) box girders has always been a complex problem to be solved in bridge engineering. To analyze the effect shear deformation at segmental joints on LCCPC girders, comparison tests were carried out three (PC) I-girders with and PC I-girder without joints, finite element simulation method was proposed based tests. Su...

In order to study the relationship between bearing capacity of structure and damage degree, author proposed parameter analysis heat storage loss test concrete composite box girder. Taking five-span prestressed girder as an example, different degrees are simulated by reducing bending stiffness parts, modal strain energy method flexibility difference used diagnose structural damage. The results s...

To increase the maximum span of cable-stayed bridges, Uwe Starossek has developed a modified statical system. The basic idea of this new concept is the use of pairs of inclined pylon legs that spread out longitudinally from the foundation base or from the girder level. Spread-pylon cable-stayed bridge has distinct advantage like reduction of sag of cables and oscillation of cable during earthqu...

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...