五、计算水平地震作用的振型分解反应谱法 作用于i质点上的力有

一、单自由度体系的水平地震作用 对于单自由度体系,把惯性力看作反映地震对结构体 系影响的等效力,用它对结构进行抗震验算

地震作用 结构的地震反应 结构、构件的地震作用效应 地震作用和结构抗震验算是建筑抗震设计的重要环 节,是确定所设计的结构满足最低抗震设防安全要求的 关键步骤

Determination of the relative movement of the two walls from the tension joints

TERMINOLOGY FOR DISPLACEMENT a is the rake angle

Main Bedding Types Bedding Shape level bedding ripple bedding Main Types of plate laminae

CONSTRUCTION OF VERTICAL SECTION 1 Select the location of the section and draw a section line (usually perpendicular to the strike of the main structures), right-hand end is its more easterly end 2 Draw a topographic profile along the line of section. Determine the base line on the squared

Review Show the homework and note book on your desk Practise measurement of attitude of planes and lines in the models

Determination of the top sur faces of the beds from the scour surfaces

Chapter 2 Primary Sedimentary Structures Main types of bedding Determination of younger direction of beds from primary structures Types of stratigraphic break Angular unconformity Soft sedimentary structures