Hammoum Hocine

Mouloud Mammeri University of Tizi-Ouzou | UMMTO · Department of Civil Engineering

This study investigates the properties of waste steel fiber reinforced recycled concrete (RC-WSF) aiming to develop sustainable concrete using demolition debris and steel fibers from machining chips. The research has two primary. To assess the impact of various percentages of recycled aggregates (RA) as replacements for natural aggregates (NA) in c...

In Algeria, the seismic design of elevated concrete storage tanks is carried out in accordance with seismic standard, involving a behavior coefficient of the structure. This behaviour coefficient is used to determine the internal forces and to estimate the inelastic deformations undergone by the structure. For the elevated water tank, considered as...

In the seismic field, the seismic performance of a structure reflects its damage level under a given seismic demand. Thus, to evaluate this performance, many analysis and design techniques are used, such as nonlinear approach commonly called Pushover is used in this research. On the other hand, predicting the damage level is a random process, where...

Earth dams are widespread throughout the world and their safety is the overriding concern of civil engineers, especially in regions with high seismic activity. This contribution presents a deterministic and reliability-based approach of the slope stability analysis of homogeneous earth dam under seismic loading. The hydrostatic loading as well as t...

Dans cette troisième contribution, en utilisant toujours la même approche analytique basée sur la construction graphique de Bergeron que dans les deux premières parties [1, 2], nous considérant les pertes de charges concentrées en amont de la conduite forcée, juste à la sortie du réservoir. Les équations analytiques gouvernant la propagation des on...

The lifetime of a reinforced concrete (RC) storage tank depends strongly on the aggressiveness degree of its environment (presence of chlorides and carbon dioxide). The aggressiveness of these agents leads to corrosion of steel reinforcements. To understand the evolution in time of this corrosion pathology, the engineer uses corrosion models in det...

Traditionally, the optimization of civil engineering structures is conducted by a deterministic approach based on global safety coefficients recommended by the dimensioning codes, such as the Algerian seismic code and the Eurocodes. These coefficients are applied to take into account the uncertainties related to live loads in order to protect the s...

Quel est l’apport de la sociologie dans le métier de l’ingénieur civil ? Voici la question à laquelle entreprend de répondre Hocine Hammoum, professeur au département de génie civil, l’université Mouloud Mammeri, de Tizi Ouzou, en Algérie. Au travers de trois expériences vécues sur le terrain, il montre le rôle essentiel de l’interdisciplinarité et...

The behaviour coefficient is a parameter introduced in dimensioning codes in order to determine the internal forces and to estimate the inelastic deformations undergone by a structure. For each type of structure, a unique value is associated by various design codes. For the elevated water tank, considered as reverse pendulum structure, this coeffic...

The design of concrete elevated water tanks involves several kinds of uncertainties. Traditionally, the design of these structures is based on a deterministic analysis. Partial safety factors prescribed in design codes are applied to take into account these uncertainties and to ensure sufficiently safe design. However, this approach does not allow...

Reinforced concrete water storage tanks are civil engineering structures subject to very aggressive atmospheric conditions that expose them to harmful corrosion risk. This dangerous phenomenon caused by the penetration of chloride ions causes pitting corrosion and leads to the reduction of the section of the reinforcements and consequently to the l...

The reinforced concrete (RC) water storage tanks are hydraulic structures that occupy a special place among civil engineering structures. Under the effect of hydrostatic and hydrodynamic loads, their walls undergo horizontal tensile stresses which are absorbed by horizontal reinforcements. Moreover, these structures are subjected to high aggressive...

The deterministic methods used in the design codes of concrete storage tanks on ground are based on the principle of safety coefficients. These deterministic analyses are subject to uncertainties related to the assessment of seismic loading. To analyze the reliability of these structures, one proposes in this study a probabilistic approach by consi...

Hydrology is widely used in the design of hydraulic structures. Knowing the exact value of the specific flow of the project is a permanent preoccupation of Civil Engineers. This is why we propose in this article a set of maps giving the frequency specific flows (return periods of 10, 50, 100 years) on the Sebaou watershed in Great Kabylia (Algeria)...

In the field of civil engineering, concrete water storage tanks are considered as hydraulic structures occupying a special place among other structures. The location of these tanks is based on hydraulic considerations related to the desired service pressure for subscribers whose solution is obtained by a compromise with the topographical constraint...

ABSTRACT We propose in this paper a method for assessing the inertia moments of the support of an elevated tank, placed on a frame staging. This analytical method is inspired by the basic relations of the strength of materials relating to the analysis of the plane sections characteristics. For the amateur reader of graphic solutions, he will find,...

The local authority of the hydraulic sector in the region of Tizi Ouzou (Algeria) has undertaken a vast programme of filtering basins in 1996. After two decades of operation of these structures, it seemed necessary to evaluate their feedback. The objective of this study is to test the efficiency of this wastewater purifying system by analyzing a sa...

The diagnostisis and the expertise of small dams are both important tasks in the assessment of their vulnerability to natural hazards (earthquake, rainfall, snow, wind). In many emergency situations, after an earthquake or a major flood, the diagnostic task requires at the same time quickness and efficiency. But, hydraulic works owners face experts...

In this study, we are interested in the reliability analysis of stability to sliding of an homogeneous embankment realized with local materials. Modified Fellenius method, taking into account seismic effect and saturation line is used to define the limit state function. The failure probability of the embankment upstream slope, to the limit state of...

In the present work, we develop a probabilistic approach to analyze the failure functions related to the overall stability of a Reno mattress of an open canal. The considered state functions are those related to critical velocity, stability of the channel bottom, deformation effects, traction forces and residual velocity at the underside of the rev...

Dans notre première partie de l’analyse du coup de bélier, en nous aidant de la construction graphique de Bergeron, nous avons tiré les relations qui permettent de calculer les débits et les pressions au niveau de la vanne et du réservoir, en considérant les pertes de charges négligeables. Dans cette deuxième contribution, nous supposons que ces pe...

This work presents a methodology for assessing the damage level of an existing structure under seismic action. First, the seismic demand is introduced by the response spectrum provided by the seismic code, and then the nonlinear static equivalent analysis is performed by structural finite element software to obtain the capacity curve. The evaluated...

Algeria has almost 40,000 water storage tanks and they are mainly constructed of concrete. The experience and management feedback nearly half a century revealed a wide disparity of behavior of these structures which is manifested by several pathologies. Lack of maintenance of these tanks that are exposed to natural hazards (e.g., snow, wind, and ea...

The structure that is the subject of interest in this work is an apartment building in Algiers surmounted by a reinforced concrete (RC) water tank with a container capacity of 1000 m³. Since its entry into service in 1962, this structure was subjected to several earthquakes (El Asnam 1980, Constantine 1985, Oued Djer 1988) without being disturbed....

Traditionally, the dimensioning of storage tanks is conducted with a deterministic approach based on partial coefficients of safety. These coefficients are applied to take into account uncertainties related to hazards on properties of materials used and applied loads. However, the use of these safety factors in the design process does not assure an...

In this paper, we study a complex structure which is an apartment building surmounted by a reinforced concrete water tank. The tank located on the top floor of the building is a container with capacity of 1000 m3. The building is complex in its design, its calculation and by its behavior under earthquake effect.This structure located in Algiers and...

L’Algérie, a été le siège d’une activité sismique relativement forte durant ces dernières décennies. Les séismes ayant affecté la bande nord de son territoire (notamment ceux d’El Asnam en 1980 à Boumerdes en 2003) attestent du risque et du danger qui menacent les structures de génie civil en général, et les réservoirs surélevés en particulier. Ces...

The concept of vulnerability to some natural hazards (snow, wind and earthquakes) is used in this paper to predict the level of degradation or ageing that may occur on a large scale to a water storage tank. To assess the state of these tanks, our research is based on a diagnostic method which consists in determining the index of vulnerability, taki...

We develop, in this paper, a method of calculating the water hammer inspired by the graphic construction of Bergeron, which we qualify as analytical method. In helping us of these graphs, we get the relationships that allow calculating the flow rates and pressures along a penstock. The flow of water is carried out by gravity adduction connecting at...

In the field of civil engineering, concrete water tanks, considered as hydraulic structures, take a special place among constructions. These tanks subjected to harsh natural conditions and to hydrodynamic loads, age and deteriorate. In order to predict the degradation and ageing level that can occur in these structures, the concept of vulnerability...

The structure which is the subject of our interest, and which to this day remains a feat of civil engineering, associates both a building for residential use and an hydraulic structure by its container (drinking water storage tank) at the last floor, makes it a highly complex structure. It is complex in its design and calculation and complex by its...

In the field of civil engineering, concrete water storage tanks are considered as hydraulic structures and take a special place among the constructions. The experience feedback, nearly half a century of management, revealed a wide disparity of behaviour of these structures to seismic effect, manifested by several pathologies. In this chapter, the c...

L’article qui est proposé ici s’intéresse à la modélisation numérique de l’évolution dans le temps de l’indice de vulnérabilité (Iv) d’un réservoir, qui désigne le niveau de dégradation et de vieillissement, connu en certains points correspondant à des âges (t) différents de son expertise. L’objectif est la construction d’une fonction approchée Iv(...

Le concept de vulnérabilité à certains aléas naturels (neige, vent, séisme,…etc) est utilisé pour prédire le niveau moyen des dommages et le vieillissement qui peut se produire dans des réservoirs de stockage d’eau en béton. La prévision de l’état du comportement au vieillissement de ces structures, dans leur cycle de vie, constitue un élément esse...

The reinforced concrete water storage tanks are now very widespread across the Algerian park. Since these structures amount to heights much higher than the buildings to ensure adequate pressure in drinking water networks, and taking into account the hydrodynamic effect when tanks are fully or partially fulfilled, their failure can lead to catastrop...

In the field of civil engineering, concrete water storage tanks are considered hydraulic arts structures occupying a special place among the constructions. In reality, these tanks, subjected to harsh natural conditions and to hydrodynamic loads, age and deteriorate. In order to predict the degradation and aging level that can occur in these stru...

In industry, performing dependability evaluation along with other analyses allows anticipating and making trade-offs. This field has then gained its current distinguished standing, mainly during the last half-century, in areas such as defense, aeronautics, space, and nuclear. It is now absolutely crucial and critical for all sectors of industry, pa...

La présente étude rentre dans le cadre de l’expertise relative à la remontée des eaux souterraines au niveau d’une plate-forme de construction de bâtiments à usage d’habitation dans une école de formation, située à l’ouest d’Alger (Algérie). Pour assurer la protection de la zone d’habitations, il est nécessaire de dimensionner et d’implanter un sys...

The SONADE (SOciété NAtionale de Distribution d’Eau potable), actually called Algérienne Des Eaux (A.D.E.), has inherited a modest heritage of drinking water tank storage of the colonial administration. Subsequently, the central government through the Department of Hydraulics of Wilaya (DHW) has executed an ambitious program for building storage ta...

Structure which is the subject of our interest in this work is an apartment building surmounted by a tank with a container capacity of 1000 m3 in Algiers. Since its entry into service in 1962, this structure has subjected to several earthquakes (El Asnam 1980, Bordj Ménaiel 1982, Oued djer 1988, Tipaza 1989) without being disturbed. But the Boumerd...

We present in this study the Algerian park of concrete storage tanks. We present the analysis of the management mode of the aging tanks, by highlighting the lack of data and mutism of the calculation codes face to these structures. This leads us to pose the needs of this sector in terms of diagnostic methods and expertise. To estimate the state of...

The evaluation of the twins tanks of potable water from the hydraulic heritage of an easten coastal city in Algeria, revealed two major pathologys, namely, the burst concrete and corrosion of steels.These pathologys have resulted in the failure of the function “resistance” of the components of the tanks, and who are the top belt and the strike. Thr...

The important development of small dams in irrigation in Algeria is linked to the need to store water to protect against seasonal or interannual variability of floods. In the eighties, an extensive program of dams (numbering 83) was made by the Direction de l'Hydraulique of Tizi Ouzou (Algeria). These small dams are not managed by a management agen...

In this paper, the concept of vulnerability to natural hazards is used to predict the average level of damage and aging that may occur on a large scale in a water storage tank. To estimate the state of these storage tanks, we develop in this study a diagnosis method based on the vulnerability index (I v), taking into account all affecting; environm...

This study is a part of the expertise related to the problem related to landslides at the dam site of Tamellaht, Tissemsilt, Algeria. The construction of the dam began on 2005 and has been stopped by landslides at the axis of the dam. A circular type of landslide is mostly located on the left bank. It is characterized by a surface fracture formed a...

Le présent ouvrage est destiné aux ingénieurs évoluant en bureaux d’études, aux élèves ingénieurs et tous ceux qui s’intéressent aux systèmes d’information géographiques (SIG). Les domaines d’application des SIG sont très vastes, pour n’en citer que quelques uns, l’architecture, l’urbanisme, le génie civil, l’hydraulique, l’aménagement du territoir...