System reliability developments in structural engineering

Moses, Fred

doi:10.1016/0167-4730(82)90011-x

Cited by 142 publications

(37 citation statements)

References 3 publications

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“…A six-pre-stressed-concrete-girder bridge is evaluated for (i) the ultimate capacity of one girder reaching its maximum plastic rotation (equal to the maximum allowable rotation of 0·0402 rad) and (ii) the ultimate capacity of the mechanism formed with six overstressed girders whose ultimate capacity is six times the reserve capacity of one member. Moses (1982) proposed a general solution to find out multi-collapse mode. Estes & Frangopol (1999) considered the failure of any three adjacent girders out of the simplified five-girder bridge model tantamount to system failure.…”

Section: A Summary Of Existing Failure Criteriamentioning

confidence: 99%

“…see Moses 1982;Galambos 1990;AASHTO 1994) and ensure the target system reliability for the given structural configuration and loading. This technique of course would require a clear understanding of the system failure criteria, load sharing and load redistribution after initial component failures, post-failure material behaviour, and possible dependence among the basic variables.…”

Section: Introductionmentioning

confidence: 99%

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Reliability of redundant ductile structures with uncertain system failure criteria

Bhattacharya

Lü

Zhong

2009

Sadhana

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Current reliability based approaches to structural design are typically element based: they commonly include uncertainties in the structural resistance, applied loads and geometric parameters, and in some cases in the idealized structural model. Nevertheless, the true measure of safety is the structural systems reliability which must consider multiple failure paths, load sharing and load redistribution after member failures, and is beyond the domain of element reliability analysis. Identification of system failure is often subjective, and a crisp definition of system failure arises naturally only in a few idealized instances equally important. We analyse the multi-girder steel highway bridge as a k out of n active parallel system. System failure is defined as gross inelastic deformation of the bridge deck; the subjectivity in the failure criterion is accounted for by generalizing k as a random variable. Randomness in k arises from a non-unique relation between number of failed girders and maximum deflection and from randomness in the definition of the failure deflection. We show how uncertain failure criteria and structural systems analyses can be decoupled. Randomness in the transverse location of trucks is considered and elastic perfectly plastic material response is assumed. The role of the system factor modifying the element-reliability based design equation to achieve a target system reliability is also demonstrated.

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Section: A Summary Of Existing Failure Criteriamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Reliability of redundant ductile structures with uncertain system failure criteria

Bhattacharya

Lü

Zhong

2009

Sadhana

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“…structural system reliability, dead failure, fatigue failure, stiffness failure, failure mechanism, correlation At present, the structural reliability analysis of static strength, stiffness and fatigue is mostly considered [1][2][3] separately. But, in fact, there are often many hybrid cases of multi-failure modes in engineering structures.…”

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confidence: 99%

Reliability analysis of stochastic structural system considering static strength, stiffness and fatigue

Zhao

2007

SCI CHINA SER G

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Multi-failures are possible to appear in the process of using the structural system, such as dead load failure, fatigue failure and stiffness failure. The expression of residual resistance is given based on the impact of random crack propagation induced by the fatigue load on the critical limit stress and section modulus in this paper. The failure modes of every element of the structural system are analyzed under dead and fatigue loads, and the influence of the correlation of failure modes on reliability of the element is considered. Failure mechanism and the correlation of failure modes under dead and fatigue loads are discussed, and the method of reliability analysis considering static strength, fatigue and stiffness is given. A numerical example is analyzed, which indicates that the failure probability is different for different use life and the influence of dead and fatigue loads on reliability of the structural system is different as well. This method of reliability analysis, in the paper, is better than the method only considering a single factor (or static strength, or fatigue, or stiffness, etc.) in the case of practical engineering.structural system reliability, dead failure, fatigue failure, stiffness failure, failure mechanism, correlation At present, the structural reliability analysis of static strength, stiffness and fatigue is mostly considered [1][2][3] separately. But, in fact, there are often many hybrid cases of multi-failure modes in engineering structures. First, the smaller fatigue loads induce a definite fatigue damage and cause the descent of the static strength and stiffness, and then the ultimate loads will cause strength failure or stiffness failure [4] . In addition, because these failure modes have correlation due to some parameters, it is true for the engineering case that the correlation of these failure modes is simultaneously considered in the process of reliability analysis. Degradation of section modulus and critical limit stress of structure is analyzed under fatigue loads, the relations

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“…For civil engineers, serviceability refers to the conditions under which a building is still considered useful [7,14,15]. Should these limit states be exceeded, a structure that may still be structurally sound would nevertheless be considered unfit.…”

Section: Introductionmentioning

confidence: 99%

Forensic Investigation of Abandoned GSIS Building in Manila

Ganiron¹

2013

IJDRBC

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a) Deterioration damage of concrete of the abandoned GSIS building is increasing as the years pass by; b) The abandoned GSIS building is still in serviceable condition in terms of its structural members; c) Steel corrosion and concrete deterioration are the major factors that affected the stability and integrity of structural members of the abandoned GSIS building in Manila; d) There is a difference between the design loads used in the GSIS building in Manila from the present design codes of National Structural Code of the Philippines (NSCP) and American Concrete Institute (ACI) codes.

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System reliability developments in structural engineering

Cited by 142 publications

References 3 publications

Reliability of redundant ductile structures with uncertain system failure criteria

Reliability of redundant ductile structures with uncertain system failure criteria

Reliability analysis of stochastic structural system considering static strength, stiffness and fatigue

Forensic Investigation of Abandoned GSIS Building in Manila

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