Judgment in Geotechnical Engineering: the professional legacy of Ralph B. Peck
Author: John Dunnicliff, Don U. Deere | Size: 68.8 MB | Format:PDF | Quality:Scanner | Publisher: BiTech Publishers Ltd. | Year: 1991 | pages: 342 | ISBN: 0921095171
This edited book of 30 papers and reports by Ralph Peck collects the most important writings of this major figure in geotechnical engineering, and serves as an outstanding case history of good judgment in engineering practice. Includes new introductions to each paper written by Peck himself explaining the paper's background and impetus and conveying his present views. An outstanding reference, the book also has supplementary text use in ethics courses.
Code:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
Posted by: denemekicin - 06-04-2014, 05:59 AM - Forum: Archive
- No Replies
Dear All,
I'm looking for this paper:
Full title: Prediction of Movements for Braced Cuts in Clay
Author(s): Mana, A. I., Clough, G. W.
Publisher: Journal of the Geotechnical Engineering Division, Vol. 107, No. 6, June 1981, pp. 759-777
Language: e.g. English
Note: Journal exists in the forum but most of the pages are missing.
Abstract Current ship structure strength assessment procedures used by ship classification societies are mostly experience-based. The degradation effects of damages including fatigue, corrosion, collision and grounding on ultimate strength are seldom taken into account. Cui and Wu [1] proposed a more rational ship structure strength assessment method, First-Principle-Based Strength Assessment System (FBP-SAS), which take all damages into account. The calculation results depend on the input data and the input data depend on the aim of assessment. For newly designed ships, statistical damage data and
loading data can be used and the calculating results are reliability results. For inspecting the ship in
service, the actual damage data based on measuring can be inputted and the calculating results are the
ship structure’s actual residual ultimate strength. The purpose of this paper is to address how such a computer simulation system is developed and what problems need to be solved in order to realize practical application. Corrosion and fatigue are two main factors for strength degradation. Based on the
recent research work carried out in authors group, the ultimate strength degradation of ship structures by
corrosion and fatigue is studied in this paper and this result acts as a demonstration to the FPB-SAS
method.
Code:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
Multiple earthquakes occur at many regions around the world where complex fault
systems exist. These fault systems usually do not relieve all accumulated strains at once
when the first rupture takes place. Therefore high stresses form at different locations
causing sequential ruptures until the fault system is completely stabilized. The sequential
ruptures along the fault segment(s) lead to multiple earthquakes which are often hard to
distinguish them as fore-, main- and after-shocks, or a sequence of earthquakes from
proximate fault segments.
Field investigations reported failure of structural systems under repeated earthquakes,
especially where structural retrofitting was not provided due to the short time frames
between the successive shaking. In most failure cases the reported damage is mainly due
to dramatic loss of stiffness and strength of structural elements as a result of material
deterioration under repeated earthquake loadings. Deterioration effects are obvious in
structures that experienced main-shock aftershock earthquake sequence and were able to
withstand the main-shock however they collapsed in the smaller aftershock.
Limited research has addressed the seismic behavior of structures subjected to multiple
earthquakes. Repeated shaking induces accumulated damage to structures that affects
their level of stiffness and strength and hence their response. Given the complexity of
depicting the degrading behavior of structures using the current numerical tools, previous
researchers used simplified approaches to compensate for the absence of important
numerical model features of stiffness and strength degradation, alongside pinching of
load-displacement loops. Moreover ground motion sequences used in previous studies
were randomized and hence the characteristics of ground motions effects on the response
Code:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
A seismic design procedure considering performance criteria for two distinct limit states is presented, involving analysis of a
feasible partial inelastic model of the structure using currently available powerful tools. The procedure is developed in a format
appropriate for incorporation into modern design codes, such as the Eurocode 8, and two alternatives are explored, one involving time–history analysis for appropriately scaled input motions, and a simpler one involving inelastic static (pushover) analysis. The proposed method is found to lead to better seismic performance than the standard code procedure, at least in the case of regular multistorey reinforced concrete frame structures studied herein, and in addition leads to a more economic design of transverse reinforcement in the members that develop very little inelastic behaviour even for very strong earthquakes.
Code:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
Micro Structure Effect of Concrete Degradation for Compressive Strength of Concrete Burned in High Temperature
Author: Setyowati E W , Soehardjono A , Zacoeb A , Fuad A , Mufti N | Size: 767 KB | Format:PDF | Quality:Unspecified | Publisher: International Journal of Emerging Technology and Advanced Engineering | Year: 2012 | pages: 06
Abstract- It is generally recognized that the
environmental degradation of the concrete infrastructure is
a serious, large scale and costly problem in many parts of
the world. This study discussed about the power of concrete
structure especially the comparison of the compressive
strength of concrete due to higher temperature of fire with
the micro structure of concrete degradation . The
methodology consisted of experiment using the concrete
samples that was carried out by trial kinds temperature of
400°C, 600°C, and 800°C with factor of cement water was
steady in 28 days and then carried out process at the
burner wich burned . The study highlights thecapabilities
of the methods for the analysis of concrete towards the
determination of hardenedcement paste degradation. The
methods ascertain that the samples XRD results showed
small quantity of ettringite, calcium, carboaluminate
hydrate , and a complete leach of portlandite fase and to be
smaller than in high temperature and to be loos at 800
oC.The result for the SEM it will be degradation at micro
structure of concrete, like the micro crack on material
concrete at high temperature (800oC). The result
compressive test for 80 samples of concrete is the
compressive strength for the material concrete is become
lower than in high temperature, up to70 % .
Code:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
SEISMIC ASSESSMENT OF AN IRREGULAR THREE-STOREY FULL SCA LE RC TEST STRUCTURE WITH SUBSTANDARD DETAILS
Author: S. J. PARDALOPOULOS Civil Engineer, (AUTh), MSc (DUTh), Greece [email protected] GEORGIA E. THERMOU PhD Candidate, Department of Civil Engineering Demokritus University of Thrace, Greece, STAVROULA J. PANTAZOPOULOU | Size: 737 KB | Format:PDF | Quality:Unspecified | pages: 17
ABSTRACT
Seismic assessment of a full scale 3-storey, irregular reinforced concrete structure that was tested in the European Laboratory for Structural Assessment (ELSA) is presented in the paper. The structure is representative of older design and construction practices in Southern Europe, prior to the introduction of capacity design principles or modern detailing. Parametric analyses where carried out to quantify the effect of plan
eccentricity with the various mechanisms of resistance throughout the frame system, using the same ground motion records and PGA that were used in the actual tests. Mechanisms considered are member effective stiffness, member flexure, member shear, development capacity of anchorages and lap splices, and joint shear. Response parameters considered are the time-histories of the trajectories of the Center of Mass in the three floors, interstorey drift and floor twist. Also calculated are the time histories of demand/supply ratios, λi, for the various mechanisms of resistance.
Code:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
![[Image: 46165947255239778550.jpg]](https://pic.civilea.com/images/46165947255239778550.jpg)
![[Image: info.png]](http://postgen.civilea.com/icon/info.png){kind=icon}
![[Image: download.png]](http://postgen.civilea.com/icon/download.png){kind=icon}
![[Image: 97407041734423991491.jpg]](https://pic.civilea.com/images/97407041734423991491.jpg)
![[Image: 70018450392642394302.jpg]](https://pic.civilea.com/images/70018450392642394302.jpg)
![[Image: 46918831032152428541.jpg]](https://pic.civilea.com/images/46918831032152428541.jpg)