Seismic Analysis and Measurement of a Intake tower of reservoir.

水库进水塔地震分析与测量。

• 批准号: 06660297
• 负责人: AOYAMA Shigeyasu
• 金额: $ 1.34万
• 依托单位: Tokyo University of Agriculture and Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-06660297/
• 关键词: Seismic Acceleration; Intake Tower of a Reservoir; Earthquake Response Analysis; Measurement; Appurtenant Structure of Dam; Finite Element Method

(1) Earthquake Measurement : In February 1995, the seismometer was installed in the gate operation room of the "NAGARA" dam intake tower which is RC and is 42m high. From the beginnings of April to July, 10 events were recorded by the seismometer. The maximum recorded acceleration of 8 events among them were smaller than 10 gal and M<5.0. The off-SAGAMI bay event occurred in '95,7,3 took the maximum horizontal acceleration of 42 gal, and of which magnitude is 5.6 and epicentral distance is 60 km. This record was used for the response analysis of the tower.(2) Use of acceleration in the dam foundation as a input motion to the tower : As there are no suitable devices which specify the input earthquake motion to the tower, an alternative record was adopted by the "NAGARA" dam foundation seismometer. To use this, various aids by "Water Resources Development Cooperation" were appreciated.(3) Approval of the mechanical model of the tower : Response analyzes using both normal beam-column FEM model and modified beam model which is able to express rocking of the foundation were carried out. Because the material mechanical constants are generally unknown to best expressing the observed natural period of the structure, these constants were chosen so that the model analyzes best express the observed natural periods. Under these conditions, normal model gave considerably good coincidence in the statistical sense comparing to the observed acceleration process. But under some combination of material constants, rocking vibration model gives a larger response value.

(1)地震测量：1995年2月，地震仪安装在“NAGARA”大坝进水塔（钢筋混凝土，高42米）的闸门操作室。从4月初到7月，地震仪记录了10起事件。其中8个事件的最大记录加速度小于10 gal，M<5.0。1995年7月3日发生的SAGAMI湾外地震，最大水平加速度为42 gal，震级为5.6级，震中距为60 km。该记录用于塔的响应分析。(2)使用坝基加速度作为塔架的输入运动：由于没有合适的装置规定塔架的输入地震运动，“NAGARA”坝基地震仪采用了替代记录。为了利用这一点，“水资源开发合作”提供了各种援助。(3)塔的力学模型的批准：使用正常的梁柱有限元模型和修改的梁模型，能够表达摇摆的基础进行响应分析。由于材料力学常数通常是未知的，无法最好地表达结构的观察到的固有周期，因此选择这些常数，以便模型分析最好地表达观察到的固有周期。在此条件下，正态模型与观测到的加速过程相比，在统计意义上具有相当好的一致性。但在某些材料常数的组合下，摇摆振动模型给出了较大的响应值。

项目成果

S.Aoyama., S.Ishida.: ""Dynamic Response analysis of a Intake Tower of Embankment Dam"" Pre-prints for 1995 Annual Meeting of Japanese Soc.of Irrigation, Drainage and Reclamation Eng.150-151 (1995)

S.Aoyama.，S.Ishida.：“堤坝进水塔的动态响应分析”1995 年日本灌溉、排水和垦殖学会年会预印本 Eng.150-151 (1995)

青山咸康・石田昇一郎: "有限要素法によるフィルダム取水塔の動的応答解析" 平成7年農業土木学会大会講演要旨. 150-151 (1995)

Hamayasu Aoyama 和 Shoichiro Ishida：“使用有限元法对填坝取水塔进行动态响应分析”1995 年日本农业和土木工程师学会会议摘要 150-151 (1995)。

青山成康・石田昇一郎: "取水塔の地震加速度観測と応答計算" 平成8年農業土木学会大会講演要旨. (1996)

Shigeyasu Aoyama和Shoichiro Ishida：“取水塔的地震加速度观测和响应计算”1996年日本农业和土木工程师学会会议摘要（1996）。

S.Aoyama., S.Ishida.: ""Earthquake Measurement in a Intake tower and Response Analysis"" Pre-prints for 1996 Annual Meeting of Japanese Soc.of Irrigation, Drainage and Reclamation Eng.(1996)

S.Aoyama.，S.Ishida.：“进水塔中的地震测量和响应分析””日本灌溉、排水和开垦工程学会 1996 年年会预印本(1996)

青山成康・石田昇一郎: "有限要素法によるフィルダム取水塔の動的応答解析" 平成7年農業土木学会大会講演要旨. 150-151 (1995)

Shigeyasu Aoyama 和 Shoichiro Ishida：“使用有限元法对填坝取水塔进行动态响应分析”1995 年日本农业和土木工程师学会会议摘要 150-151 (1995)。