Eisenberg J.M.

Publications

The Updated Version and Problems of Further Development of SNiP II-7-81* “Construction in Seismic Areas”
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The paper presents the abridgement of the updated version of SNiP II-7-81* Chapter (SP 14.13330.2011 “Construction in seismic areas”).

Project of Changes and Addendums Guide Lines SP 14.13330.2014 “Construction in Seismic Regions. SNiP II-7-81*” (first drafting)
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Experts of TSNIISK named after. V.A. Koucherenko JSC “RCC”, IPE RAS, АIIS and workgroup members have prepared and passed the first drafting project of changes and addendums SP 14.13330.2014 in FСS of the Ministry of Construction of the Russian Federation for accommodation on site for public discussion.

The Actualized Russian Earthquake Design Code Was Approved and Was Put in Force by Russian Government July 1, 2015
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The task of the future code modernization is the mutual adaptation of the engineering and the seismological parts of the code.

Innovative Systems Providing Earthquake Safety of Structures and Population, Engineering and Economic Aspects
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In the article a program of seismic design and construction of civil, industrial, including nuclear industry structures and problems of the population security in seismic hazardous areas are presented. Innovation technologies for seismic safety providing, are presented, as well. The necessity of general seismic Russian Federation zonation maps, for engineering design modification is discussed and is supported as an important part of the general program. The social and economic importance and the scale of this Program (Platform) make obvious the necessity of its Federal Budget financial support.

The Seismic Zoning Maps Need Updating
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The need of seismic zoning maps deep modification is discussed. The modern seismic maps which are elements of Russian seismic building code are in some parts out of date. The seismic intensity maps are based on different physical intensity criteria. Earthquake ground motions parameters are used simultaneously with human fear estimations. Such criteria use could lead to different estimations of seismic intensities when the real effective intensities of earthquake are equal. Proposals, on seismic intensity criteria modernization and of seismic zoning maps modernization are presented.

Updated are Design Standards «Construction in Seismic Regions» (SNIP II-7-81), on the Agenda are Updating Maps of General Seismic Zoning
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When updating a SNIP II-7?81 «Construction in seismic regions» some fundamental changes are made. These changes necessitate changes in the methods, as well as in maps of general seismic zoning (GSZ), which are used in the current regulations. The new updated standards and the old GSZ maps are incompatible.

The paper presents the reasons and examples of this incompatibility. Some suggestions on the expected results for the GSZ update maps of updated design standards «Construction in seismic regions» are also presented.

Notes on Development of the Seismic Intensity Scale
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The present notes are extension of the subject discussed in our journal for the recent years. Some essential drawbacks of existing seismic intensity scales are presented. The ways of developing the methods to determine the earthquake effect parameters required to design structures to be erected in earthquake-prone areas are discussed. The seismologists’ proposals dealing with modification of seismic scales are considered.

Analysis of Seismic Motion for the Bound Pile System under Instrumental Accelerogram
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The paper presents the results of studies in earthquake vibrations of concrete piles. The research was accomplished within the framework of studying seismo-isolating properties of the bound pile system. As a mathematical model of the seismic action the authors used the instrumentally recorded accelerogram of the Gazli earthquake (1976). Non-linearity of the pile deformation was taken into account. Eventually the pile horizontal displacements, velocities and accelerations were obtained. For the adopted correlation of pile parameters and the Gazli estimated accelerogram the ratio of the pile and soil maximum horizontal earthquake accelerations is 0.66. In design of earthquake resistant structures in addition to accelerations the other kinematic parameters will be considered. The paper presents the results of studies in some of the abovementioned effects. These effects are illustrated by the example of using the Gazli instrumental accelerogram (1976)

Seismic Intensity Scale and Building Design Codes
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The problems and scopes of the macroseismic intensity scales are discussed.
The main attention is given to MSK (Medvedev-Sponheuer-Karnik)-scales. Some uncertainties and mistakes in MSK-64 scale are indicated using the seismic upset analysis. These faults make doubtful the results of the scale practical use.
Some proposals are formulated concerning macroseismic scales practical use.
The proposal of waiving the notions and parameters of the macroseismic scale in further development of design codes and standards is discussed.

Problems of Seismic Zoning Mapping for Building Codes
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The paper analyzes some contradictory situations occurring sometimes when OSR-97 seismic maps are used together with the List of settlements on the RF territory and the SNIP II-7-81* “Construction in seismic areas”.
Some proposals are presented to alleviate these contradictions. The conclusions are presented on the necessity to take account of OCP-97 application experience in development of subsequent versions of seismic maps and seismic codes.

Elastoplastic Behavior of a Concrete Pile in the “Pile-in-Tube” System under Seismic Effects
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Some results of the research program for optimization of seismoisolation pile-in-tube systems are presented. Various types of these systems are demonstrated. Several parameters of presented systems are responsible for seismic load decrease, such as pile flexibility, depth of the pile end, fuse reserve elements properties, etc. An optimum combination of the mentioned parameters is the main goal of the presented study as well as elaboration and implementation of practical engineering solutions.

The building for shaky ground
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Памяти Якова Моисеевича Айзенберга
22 апреля 2018 года исполнился год, как ушел из жизни Яков Моисеевич Айзенберг, доктор технических
наук, профессор, Заслуженный деятель науки РФ, Заслуженный строитель РФ, почетный академик РААСН,
научный руководитель ЦИСС ЦНИИСК им. В.А. Кучеренко АО «НИЦ «Строительство», главный редактор
журнала «Сейсмостойкое строительство. Безопасность сооружений».
В память о выдающемся ученом, многолетнем бессменном главном редакторе нашего журнала, редкол-
легией было принято решение о ретроспективе публикаций Я.М. Айзенберга.
Сегодня мы предлагаем Вашему вниманию статью Якова Моисеевича «Дом для зыбкой тверди», опубли-
кованную в журнале «Наука и жизнь» (№ 8, 1989 год).