Showing papers in "Engineering Structures in 1998"

TL;DR: In this paper, the authors summarize basic concepts on which the pushover analysis can be based, assess the accuracy of pushover predictions, identify conditions under which pushover will provide adequate information and, perhaps more importantly, identify cases in which the prediction will be inadequate or even misleading.

TL;DR: In this article, the effect of detuning on some of the TMD parameters on the performance is studied using steady-state harmonic excitation analysis and time-history analysis, and the effects of tuning criteria and significance of numerical tuning are also studied.

TL;DR: In this paper, the sensitivity of the corrosion initiation time of steel reinforcement to changes in the main descriptors of diffusion related random variables is illustrated and the results can be used to develop optimal lifetime reliability-based maintenance strategies for reinforced concrete bridges under environmental attack.

TL;DR: In this paper, an overview of the damage to steel buildings observed in the 1995 Hyogoken-Nanbu earthquakes is presented, with respect to the building height and type and the location of damage and typical damage.

TL;DR: In this paper, the performance of welded connections in special moment resisting frames (SMRF) during the Northridge, California earthquake in January 1994 was influenced by many variables, such as the actual ground motions experienced by the buildings, the design details employed in the connections, material properties, fabrication workmanship and inspection practices.

TL;DR: This article reviewed the performance of steel buildings during the Northridge earthquake and examined some of the results of studies undertaken as part of a project initiated by US Federal Emergency Management Agency (FEMA) to reduce the earthquake hazards posed by steel moment-resisting frame buildings.

TL;DR: In this article, the authors present several aspects of a method for reliability assessment of reinforced concrete (RC) slab bridges with corroded reinforcement, including a non-linear finite element structural model and probabilistic models for traffic loads, corrosion propagation, bond characteristics, material properties, element dimensions and reinforcement placement.

TL;DR: In this article, the authors reviewed and analyzed over six decades of work pertaining to interference effects and proposed a generalized set of guidelines that will be of practical use to building designers and planners.

TL;DR: In this paper, the authors presented experimental data on 12 large scale connection test specimens reinforced with cover plates and identified potential benefits as well as concerns and limitations of cover plated connections.

TL;DR: In this article, a mathematical model of liquid sloshing in rectangular tanks, which includes the effects of flow-dampening devices, is developed for the purpose of damper application.

TL;DR: In this article, the effect of the back bars in connection failure is analyzed by fracture mechanics methods. And two remedy designs using a dog bone and reinforcing plates are presented at the end.

TL;DR: In this article, an unsteady and non-uniform flow equation for the liquid column vibration absorber (LCVA) is derived based on the Lagrange equation and the optimal head loss coefficient is derived explicitly under the condition that the LCVA's frequency is tuned to that of the structure.

TL;DR: In this paper, the difference in local buckling modes between cross-sections of steel and composite (concrete-filled steel) columns, the difference between composite columns in bridge piers and buildings, structural details of standard steel and composites columns for bridgepiers, and the characteristics of stiffness, ultimate strength and ductility of composite piers in Japan are described.

TL;DR: In this paper, a brief discussion of fatigue models allows for the determination of their utility in a stepwise approach to fatigue examination of existing bridges, and results of an ongoing research with fatigue tests on slab-like concrete beams are presented and interpreted.

TL;DR: In this paper, a fiber-based distributed plasticity finite element formulation is presented to perform three-dimensional monotonic analysis of square or rectangular concrete-filled steel tube (CFT) beam-columns.

TL;DR: In this article, the design of an active mass damper to reduce the effects of wind vibrations on a tall (340 m) communication tower in Nanjing, China is presented.

TL;DR: In this paper, the authors investigated the non-linear in-plane buckling and postbuckling behavior of elastic arches using a curved finite element model for the nonlinear analysis, which includes the effects of prebuckling deformations and second-order terms in the deformed curvatures and bending strains.

TL;DR: The issue of gravity induced instability during response to severe seismic excitation is examined in this article, where it is contended that while static instability is fully determined by the existence of at least one negative eigenvalue in the second-order tangent stiffness, this condition is necessary, but not sufficient for instability during dynamic response.

TL;DR: The surface stress density method as mentioned in this paper uses surface triangular elements with an isotropic stress tensor and leads to an iterative procedure which converges on configurations that satisfy the laws of static equilibrium.

TL;DR: In this paper, the effects of web and flange slenderness, material stress-strain characteristics, and axial load on ductility capacity of flexural members are presented.

TL;DR: In this article, three reduced-order control methods for wind-excited tall buildings are presented and their performances are investigated systematically, i.e., the robust H ∞ and linear quadratic regulator (LQR) control algorithms.

TL;DR: In this paper, a method of calculating reliability profiles is illustrated on an existing U.K. bridge and a definition of service lifetime for concrete bridges is presented and discussed, and three models for corrosion are formulated.

TL;DR: In this article, the constitutive formulation and cyclic analysis capability of a three-dimensional fiber-based distributed plasticity finite element for square or rectangular concrete-filled steel tube (CFT) beam-columns are presented.

TL;DR: In this paper, the results of dynamic analyses carried out on both stiffened and unstiffened panels using both simplified and advanced analytical techniques were described. But the results were limited to the case of a simple supported panel.

TL;DR: In this paper, the performances of steel bridges and viaducts during the Hyogoken-Nanbu earthquake in relation to past design specifications are described and a particular emphasis is placed on the performance of steel bridge piers and their buckling, low-cycle fatigue and brittle crack failures.

TL;DR: In this paper, a comparison of the steel design practice and design requirements in Japan and North America is made, and the relevance of these observations to North American bridge design practice is examined.

TL;DR: In this article, the authors introduce the present situation of design, construction and research on hybrid structures, and details of several selected hybrid structural systems are discussed: SRC structures, CFT column systems, RC column S beam system and hybrid wall system.

TL;DR: The history of Japanese research on brittle fracture of building steel is reviewed, and recent experimental and analytical achievements are described in this paper, where a fracture process composed of ductile crack initiation followed by stable crack growth and finally explosive failure in a brittle mode was observed in the damage of the buildings in Kobe during the 1995 Hyogoken-Nanbu earthquake, as well as in large-scale laboratory tests.

TL;DR: In this paper, a series of two-and three-dimensional static and dynamic inelastic frame analyses are performed for a 17-story steel moment frame building damaged by the 1994 Northridge earthquake.

TL;DR: In this article, a series of wind tunnel tests were conducted to compare the wind-induced stresses in cooling towers situated in an arrangement of typical power plant buildings, and compared to the stresses in an isolated tower.