Vibration Problems in Structures: Practical Guidelines

1 Vibrations induced by people.- 1.1 Pedestrian bridges.- 1.1.1 Problem description.- 1.1.2 Dynamic actions.- 1.1.3 Structural criteria.- a) Natural frequencies.- b) Damping.- c) Stiffness.- 1.1.4 Effects.- 1.1.5 Tolerable values.- 1.1.6 Simple design rules.- a) Tuning method.- b) Code method.- c) Calculation of upper bound response for one pedestrian.- d) Effects of several pedestrians.- 1.1.7 More advanced design rules.- 1.1.8 Remedial measures.- a) Stiffening.- b) Increased damping.- c) Vibration absorbers.- 1.2 Floors with walking people.- 1.2.1 Problem description.- 1.2.2 Dynamic actions.- 1.2.3 Structural criteria.- a) Natural frequencies.- b) Damping.- 1.2.4 Effects.- 1.2.5 Tolerable values.- 1.2.6 Simple design rules.- a) High tuning method.- b) Heel impact method.- 1.2.7 More advanced design rules.- 1.2.8 Remedial measures.- a) Shift of the natural frequency.- b) Non-structural elements.- 1.3 Floors for sport or dance activities.- 1.3.1 Problem description.- 1.3.2 Dynamic actions.- 1.3.3 Structural criteria.- a) Natural frequencies.- b) Damping.- 1.3.4 Effects.- 1.3.5 Tolerable values.- 1.3.6 Simple design rules.- 1.3.7 More advanced design rules.- 1.3.8 Remedial measures.- a) Raising the natural frequency by means of added stiffness.- b) Increasing structural damping.- c) Use of vibration absorbers.- 1.4 Floors with fixed seating and spectator galleries.- 1.4.1 Problem description.- 1.4.2 Dynamic actions.- 1.4.3 Structural criteria.- a) Natural frequencies.- b) Damping.- 1.4.4 Effects.- 1.4.5 Tolerable values.- 1.4.6 Simple design rules.- 1.4.7 More advanced design rules.- 1.4.8 Remedial measures.- 1.5 High-diving platforms.- 1.5.1 Problem description.- 1.5.2 Dynamic actions.- 1.5.3 Structural criteria.- a) Natural frequencies.- b) Damping.- 1.5.4 Effects.- 1.5.5 Tolerable values.- 1.5.6 Simple design rules.- a) Stiffness criteria.- b) Frequency criteria.- 1.5.7 More advanced design rules.- 1.5.8 Remedial measures.- References to Chapter 1.- 2 Machinery-induced vibrations.- 2.1 Machine foundations and supports.- 2.1.1 Problem description.- 2.1.2 Dynamic actions.- a) Causes.- b) Periodic excitation.- c) Transient excitation.- d) Stochastic excitation.- 2.1.3 Structural criteria.- a) Natural frequencies.- b) Damping.- 2.1.4 Effects.- a) Effects on structures.- b) Effects on people.- c) Effects on machinery and installations.- d) Effects due to structure-borne sound.- 2.1.5 Tolerable values.- a) General Aspects.- b) Structural criteria.- c) Physiological criteria.- d) Production-quality criteria.- e) Tolerable values relative to structure-borne sound.- 2.1.6 Simple design rules.- a) General.- b) Data desirable for the design of machine supports.- c) Measures for rotating or oscillating machines.- d) Measures for machines with impacting parts.- e) Rules for detailing and construction.- 2.1.7 More advanced design rules.- 2.1.8 Remedial measures.- 2.2 Bell towers.- 2.2.1 Problem description.- 2.2.2 Dynamic actions.- 2.2.3 Structural criteria.- a) Natural frequencies.- b) Damping.- 2.2.4 Effects.- 2.2.5 Tolerable values.- 2.2.6 Simple design rules.- 2.2.7 More advanced design rules.- 2.2.8 Remedial measures.- 2.3 Structure-borne sound.- 2.3.1 Problem description.- 2.3.2 Dynamic actions.- 2.3.3 Structural criteria.- 2.3.4 Effects.- 2.3.5 Tolerable values.- 2.3.6 Simple design rules.- a) Influencing the initiation.- b) Influencing the transmission.- 2.3.7 More advanced design rules.- 2.3.8 Remedial measures.- 2.4 Ground-transmitted vibrations.- 2.4.1 Problem description.- 2.4.2 Dynamic actions.- 2.4.3 Structural criteria.- a) Natural frequencies.- b) Damping.- 2.4.4 Effects.- 2.4.5 Tolerable values.- 2.4.6 Simple design rules.- a) Emission.- b) Transmission.- c) Immission.- 2.4.7 More advanced design rules.- 2.4.8 Remedial measures.- References to Chapter 2.- 3 Wind-induced vibrations.- 3.1 Buildings.- 3.1.1 Problem description.- 3.1.2 Dynamic actions.- 3.1.3 Structural criteria.- a) Natural frequencies.- b) Damping.- c)