WebSep 13, 2024 · The hybrid bridge pier can be damaged in stages under earthquakes, and have great repairability after earthquakes, but the existing seismic fortification objectives cannot reflect the superiority of the hybrid bridge pier. Therefore, higher seismic fortification objectives and the corresponding seismic design method are needed for the hybrid bridge … The seismic fortification intensity is 7. According to Housner and Jennings’s advice ( 1964 ), the seismic acceleration frequency for hard ground conditions is 15.6 Hz, and the damping is 0.64. In this paper, the seismic acceleration frequency will be changed in the range of 0.1–20 Hz. See more Under seismic action, the failure modes of the casing include strength failure, axial elastic instability and lateral deformation (He et al. 2024). The limit state … See more The length of a production casing is 3000 m, the material is N-80, the outer diameter is 177.8 mm, and the wall thickness is 13.7 mm. The elastic modulus of … See more There are very few statistical data of casing failure cases caused by earthquakes in the literature and reports. This paper analyzes one case data obtained after … See more
Seismic Resilience-Based Design Method for Hybrid Bridge
WebBased on the scalar seismic-moment of the earthquake, derived from moment tensor inversion of the whole seismogram at regional distances (~10-100 s; pass band based on … WebMay 1, 2015 · The degree of structural damage caused by earthquakes depends on both the strength of the ground motions and the anti-seismic performance of structures; thus, regression curves of the vulnerability functions between these factors have been derived based on damage statistics for previous destructive earthquakes worldwide [2], [3], [4], [5]. fable in german
China seismic intensity scale - Wikipedia
WebTranscribed image text: A rectangular-section-shear wall with total height of H=-50m, bx=250mm, hx=6000mm, the seismic fortification intensity is 9 degrees and the seismic grade is I. The strength grade of concrete is C30, f=14.3N/mm², f=1.43N/mm², š=0.55, longitudinal reinforcement use HRB335, fq=300N/mm², stirrups use HPB300, … WebApr 27, 2024 · The torsion frequency was increased by 6.65 times compared with that when the wall was not built. ... (GB50011-2001). The fortification intensity was 7 degrees. There are 5 floors in the structure; the height of the first floor is 4.05 m. ... Y.-C. Seismic fortification objects of rural primary and middle schools: The damage cause study for ... Webyears.In Beichuan County Anchang Town, the total plane location map of the specific location, seismic fortification intensity is 7 degrees, the basic design of the earthquake acceleration is 0.15g, site class Ⅲ the design characteristic period 0.4s, housing secur ity level is secondary. Time limit for 300 days, starting in June 19, 2015, in ... does india lie in southeast asia