CAJ | 학술논문

对岩溶区地基-基础-上部结构共同作用体系动力分析时，进行结构分析的关键步骤之一是输入合理的地震波，对所选择的地震波进行反演是很有必要的。首先简要介绍岩溶区的地质特点以及地震波反演的基本理论，接着采用 EduShake 软件对所选地震波进行反演分析，并与地表处地震波对比分析，结果表明：地表处的 EI Centro 波和 Taft 波的加速度均比基岩处的加速度大，其中地表处的 EI Centro 波和 Taft 波的加速度峰值比基岩处的加速度峰值分别大12.3%和24.9%；EI Centro 波、Taft 波地表处与基岩处的加速度短时均方根的衰减规律基本一致，且地表处的加速度短时均方根时程曲线总体较基岩处的加速度短时均方根时程曲线偏大，说明地表处地震动强度较基岩处大，即岩溶区土层对地震波有放大的作用。
대암용구지기-기출-상부결구공동작용체계동력분석시，진행결구분석적관건보취지일시수입합리적지진파，대소선택적지진파진행반연시흔유필요적。수선간요개소암용구적지질특점이급지진파반연적기본이론，접착채용 EduShake 연건대소선지진파진행반연분석，병여지표처지진파대비분석，결과표명：지표처적 EI Centro 파화 Taft 파적가속도균비기암처적가속도대，기중지표처적 EI Centro 파화 Taft 파적가속도봉치비기암처적가속도봉치분별대12.3%화24.9%；EI Centro 파、Taft 파지표처여기암처적가속도단시균방근적쇠감규률기본일치，차지표처적가속도단시균방근시정곡선총체교기암처적가속도단시균방근시정곡선편대，설명지표처지진동강도교기암처대，즉암용구토층대지진파유방대적작용。
It is necessary to inverse seismic wave in structure dynamic analysis of the soil-founda-tion-superstructure interaction system in karst area, and one of the critical steps of structure dynamic analysis is to input a reasonable seismic wave. Firstly, the geological characteristics of karst area and the basic theory of seismic inversion are briefly introduced. The selected seismic wave is in-versed and analyzed, and it is compared with surface seismic wave with the help of EduShake soft-ware. The results demonstrate that the acceleration of EI Centro wave and Taft wave at the surface is 12. 3% and 24. 9% larger than the acceleration at the bedrock, respectively. The attenuation of short-time root mean square of acceleration of EI Centro wave and Taft wave at the surface is almost equal to that at the bedrock, and the time history curve of short-time root mean square of accelera-tion at the surface is larger than that at the bedrock, which indicates that the seismic oscillation at the surface is larger than that at bedrock and the soil in karst area plays a role in amplification of seismic waves.