| 基础类型对框架结构及场地土地震响应影响试验研究 |
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| 引用本文： | 王国波,王垚,孙富学,郑年文.基础类型对框架结构及场地土地震响应影响试验研究[J].世界地震工程,2022,38(2):096-109. |
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| 作者姓名： | 王国波 王垚 孙富学 郑年文 |
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| 作者单位： | 1. 温州大学 建筑工程学院, 浙江 温州 325035;2. 武汉理工大学 道路桥梁与结构工程湖北省重点实验室, 湖北 武汉 430070 |
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| 摘 要： | 本文设计独立基础框架和整体箱型基础框架结构模型，基于试验数据的对比分析，探讨基础类型与地震动特性对场地土以及结构自身地震响应的影响。试验结果及分析表明:地表结构的存在总体上是放大了地表加速度响应，放大最大幅度达到了40%，影响范围可达3倍的结构跨度，且具有一定埋深的箱型基础的影响大于浅埋独立基础。由于土体对独立基础的约束相对较弱，导致独立基础结构模型的加速度响应总体上大于箱型基础的；独立基础结构模型可能发生摇摆运动导致结构基础竖向响应的频谱特性含有较多的高频成分。另外，地震动特性对结构响应也较显著，其中脉冲地震动NR波的影响最为显著。
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| 关 键 词： | 地震响应 框架结构 基础类型 场地土 振动台试验 |
Experimental study on influence of foundation type on seismic response of frame structure and site soil |
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| WANG Guobo,WANG Yao,SUN Fuxue,ZHENG Nianwen.Experimental study on influence of foundation type on seismic response of frame structure and site soil[J].World Information On Earthquake Engineering,2022,38(2):096-109. |
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| Authors: | WANG Guobo WANG Yao SUN Fuxue ZHENG Nianwen |
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| Affiliation: | 1. College of Civil Engineering and Architecture, Wenzhou University, Wenzhou 325035, China;2. Hubei Key Laboratory of Roadway, Bridge and Structure Engineering, Wuhan University of Technology, Wuhan 430070, China |
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| Abstract: | Independent foundation frame and integral box foundation frame structure models are designed in the paper. The influence of foundation type and ground motion characteristics on the seismic response of site soil and structure itself is discussed based on the comparative analysis of test data. The test results and analysis show that the ground acceleration response is amplified by the surface structure，and the maximum amplification reaches 40%. The influence range reaches 3 times of the structural span，and the influence of box foundation with a certain depth is greater than that of shallow independent foundation. Due to the relatively weak constraint of soil on independent foundation，the acceleration response of independent foundation structure model is generally greater than that of box foundation. The spectrum characteristics of the vertical response of the independent foundation structure model may contain more high frequency components because of the rocking motion. In addition，the ground motion characteristics also have significant effects on the structural response，among which the impact of pulse ground motion NR wave is the most significant. |
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| Keywords: | seismic response frame structure foundation types site soil shaking table test |
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