Analysis of Concrete Gravity Dams Using Microcomputers
Monenco Consultants Limited has developed a microcomputer program entitled 'DS2' for the stability analysis of concrete gravity dams. This paper discusses this...
New Roof for an Aging Temporary
The wartime temporary design of a 1942 industrial building justified use of green timber for its roof trusses and higher than usual allowable design stresses. Some 45 years later, a new...
Hydro Combine Option for Lakhwar Project
A new concept of providing a power house cavity inside the traditional gravity dam section has been explored. Preliminary investigations indicate that taking into account all the relevant...
Computer Aided Design of Butterfly Inlet Valves
Computer simulation of butterfly inlet valves (throughflow, lattice) in hydropower schemes is presented. The software is intended for practisting engineers to obtain significant parameters...
Pull-Out Response of Geotextiles and Geogrids (Synthesis of Available Experimental Data)
During the past 15 years, there has been a considerable growth in the use of various materials to reinforce soils. The rapid development of geosynthetics and their increasing use in soil...
Controlled Yielding of the Lateral Boundaries of Soil Retaining Structures
Lateral expansion of conventional or reinforced soil backfills is necessary to establish and maintain the minimum lateral stresses on soil retaining structures. Laboratory studies are...
Mechanisms of Subsidence Induced Damage and Techniques for Analysis
Structural damage due to mining induced subsidence is a function of the nature of the structure and its position on the subsidence profile. A point on the profile may be in the tensile...
Frequency Domain Site Response with Pore Pressure
A frequency domain analysis for seismic site response and liquefaction potential is developed. The analysis is based upon a nonstationary random vibration theory. The model uses an effective...
Modeling Fatigue Crack Growth Resistance, dN/da
In the fracture mechanics approach to fatigue, da/dN is correlated with the cyclic range of the stress intensity factor, ?K; the resulting relation, da/dN=f (?K), is commonly called the...
Probabilistic Prediction of Mixed Mode Fracture Initiation and Trajectory Under Random Stresses
Methods are developed for estimating crack trajectory and the probability of crack initiation in mixed mode fracture. The analysis is based on a computer program for deterministic fracture...
Fatigue Reliability and Inspection in Redundant Structural Systems
The reliability of redundant structural systems under fatigue including updating by inspection is studied using two different formulations, i.e., the stress intensity space and the crack...
Reliability Based Analysis of Contact Problems
The S.B. Batdorf model is modified to include the reduction in shear due to the effect of compressive stresses on the crack face. This new formulation was used to obtain the probability...
Bridge Repairs?Unexpected Effects on Reliability
There is a significant probability that a bridge will require repairs at some time during its service life. Repairs correcting one deficiency can cause other, unanticipated problems. Awareness...
Stochastic Properties of Wind Spectra
In the first part of this paper the correlation function of measured wind spectra is compared with theoretical correlation models assuming a stationary wind process. This comparison indicates...
Endochronic Theory and Non-Llinear Stochastic Dynamics of 3-D Frames
Analytical continuous expressions of the material constitutive law are required by equivalent linearization techniques in nonlinear stochastic dynamics. Extensions to study 3D frames,...
Effect of Air Gap on Platform Reliability
A simplified reliability study of the effect of lateral wave forces impacting the deck of a fixed platform is presented. The reliability of the deck legs, considered the primary resistance...
Diffusion Models of Crack Growth Due to Random Overloads
Stochastic diffusion models of crack growth are developed, reflecting uncertainty in applied loading and residual stresses near the crack tip. Applications are shown to (1) random vibration...
Dilatometers Settle In
The benefits of the dilatometer test DMT are described. This geotechnical in situ testing tool was developed and patented by an Italian professor and engineer named Silvano Marchetti....
Monitoring the Effects of the Pipe Insertion Machine Technique
The results of an experimental study of the pipe insertion machine are presented in this paper. Strains induced in an adjacent pipeline, soil displacement, pipe deflection and vibrations...
Stable Channels with Loose Boundary
Recently, G. Parker suggested that the lateral transport of downstream momentum due to Reynolds stresses should be included in the momentum balance used to calculate the boundary shear...
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