ISSN:0098-8847    

DOI:10.1002/eqe.4290010102

出版商:John Wiley&Sons, Ltd    

年代:1972

数据来源: WILEY

ISSN:0098-8847    

DOI:10.1002/eqe.4290010103

出版商:John Wiley&Sons, Ltd    

年代:1972

数据来源: WILEY

摘要:

AbstractThe KII Building was subjected to the San Fernando earthquake on 9 February 1971 without suffering any damage. During the earthquake, strong motion accelerations were recorded at the base, middle and top of the building.The simulation analysis of the building was carried out taking into account the interaction between the building and the soil. The internal viscous damping theory considering the different damping coefficients for the building and the soil was adopted.Comparison of the calculated and observed acceleration time histories as well as the floor response spectra showed satisfactory agreement. On the basis of the response spectrum values, the fact that no damage was observed in this building is justified theoretically.

ISSN:0098-8847    

DOI:10.1002/eqe.4290010104

出版商:John Wiley&Sons, Ltd    

年代:1972

数据来源: WILEY

摘要:

AbstractA general method is outlined for the determination of natural frequencies of cylindrical shells with any boundary conditions when the effects of rotatory inertia and transverse shear deformation are included in the analysis. This is applied to cylindrical shells with both ends clamped. It is shown that the inclusion of these effects tends to have a greater effect upon frequencies of cylindrical shells with clamped ends than it does for corresponding shells with simply supported ends, for which numerical results are available. The authors suggest an empirical relation, which together with the latter results enables rapid estimates to be made of the effects of rotatory inertia and shear deformation on the frequencies of a wide range of cylindrical shells with clamped ends. An assessment of the accuracy of the theory with these effects included is made by comparing frequencies with values from a three‐dimensional elasticity theory, but this comparison has to be restricted to cylindrical shells with simply supported end

ISSN:0098-8847    

DOI:10.1002/eqe.4290010105

出版商:John Wiley&Sons, Ltd    

年代:1972

数据来源: WILEY

摘要:

AbstractPresented is a stochastic method of analysis of offshore towers subjected to strong motion earthquakes. A zero mean ergodic Gaussian process of finite duration is used to characterize horizontal ground acceleration and full fluid structure interaction effects are included. Numerical results for four representative deep water towers having heights of 475, 675, 875 and 1075 ft are compared with corresponding results obtained by the response spectrum method of analysis. Particular emphasis is placed on the maximum or extreme values of total transverse shear and total overturning moment. Comparisons are made with code values and the role of ductility is briefly discussed.

ISSN:0098-8847    

DOI:10.1002/eqe.4290010106

出版商:John Wiley&Sons, Ltd    

年代:1972

数据来源: WILEY

摘要:

AbstractThe effect of self‐weight and vertical ground acceleration during earthquakes on vertical cantilevers has been studied. The input is taken to be a bivariate normal random process, digitally simulated on a computer. The tip deflection, base moment and shear force have been obtained numerically for three structures of different natural frequencies. It is found that the presence of self‐weight and vertical ground excitation could alter these three quantities considerably. This leads to the conclusion that with tall structures a refined analysis, similar to the one presented here, is advisa

ISSN:0098-8847    

DOI:10.1002/eqe.4290010107

出版商:John Wiley&Sons, Ltd    

年代:1972

数据来源: WILEY

摘要:

AbstractDamages resulting from the Tokachi‐Oki earthquake of 1968 demonstrated that many code‐designed reinforced concrete columns do not have adequate earthquake resistance. A review of Japanese research revealed that the axial force ratio, the moment arm ratio, and the type and ratio of transverse reinforcement control the resistance and ductility of concrete columns. A recent experimental study at the Kajima Institute of Construction Technology evaluated the resistance of columns with three types of transverse reinforcement and three reinforcement ratios subjected to repeated alternating loads. Tied and spiral columns proved to be superior to hooped colu

ISSN:0098-8847    

DOI:10.1002/eqe.4290010108

出版商:John Wiley&Sons, Ltd    

年代:1972

数据来源: WILEY

摘要:

AbstractExperimental results of a study which was commissioned to investigate the possible benefit of added structural damping in reducing the susceptibility of a steel chimney to wind‐excited swaying vibrations are presented and discussed. The experimental and analytical techniques used are briefly described.The results indicated a significant increase in structural damping when pads of a special damping material were incorporated into the foundation structure of the chimne

ISSN:0098-8847    

DOI:10.1002/eqe.4290010109

出版商:John Wiley&Sons, Ltd    

年代:1972

数据来源: WILEY

ISSN:0098-8847    

DOI:10.1002/eqe.4290010110

出版商:John Wiley&Sons, Ltd    

年代:1972

数据来源: WILEY

ISSN:0098-8847    

DOI:10.1002/eqe.4290010111

出版商:John Wiley&Sons, Ltd    

年代:1972

数据来源: WILEY