加筋土挡墙自振频率计算方法对比分析  

Comparative Analysis of Calculation Methods for Natural VibrationFrequency of Reinforced Soil Retaining Walls

作　　者：蔡晓光[1,2,3] 蔡博渊 李思汉 黄鑫 徐洪路[4] 朱晨 CAI Xiao-guang;CAI Bo-yuan;LI Si-han;HUANG Xin;XU Hong-lu;ZHU Chen(College of Disaster Prevention and Mitigation Engineering,Institute of Disaster Prevention,Sanhe 065201,China;Hebei Key Laboratory of Earthquake Disaster Prevention and Risk Assessment,Sanhe 065201,China;Langfang Key Laboratory of Research and Application of Geosynthetic Reinforced Soil Structure,Sanhe 065201,China;Institute of Engineering Mechanics,China Earthquake Administration,Harbin 150080,China;School of Civil and Transportation Engineering,Hebei University of Technology,Tianjin 300401,China)

机构地区：[1]防灾科技学院防灾减灾工程学院,河北三河065201 [2]河北省地震灾害防御与风险评价重点实验室,河北三河065201 [3]廊坊市加筋土结构研发与应用重点实验室,河北三河065201 [4]中国地震局工程力学研究所,哈尔滨150080 [5]河北工业大学土木与交通学院,天津300401

出　　处：《长江科学院院报》2025年第4期120-126,共7页Journal of Changjiang River Scientific Research Institute

基　　金：地震科技星火计划项目(XH23067YA);廊坊市科学技术研究与发展计划项目(2023013205);河北省高等学校科学研究计划项目(BJK2024034);江苏省地质工程环境智能监控工程研究中心开放基金项目(2023-ZNJKJJ-06)。

摘　　要：自振频率是加筋土挡墙抗震设计中的关键参数之一。针对非整体式的加筋土挡墙自振频率计算方法,迄今为止尚无统一认识。总结了现有的7种自振频率计算方法,以模块式加筋土挡墙(简称模块式)与复合式格宾土工格栅加筋土挡墙(简称复合式)为研究对象,通过比较实测结果与计算结果之间的准确性系数和绝对百分比误差,评估现有计算方法的有效性。分析结果表明:模块式和复合式模型位于不同高度处的自振频率基本一致。伍永胜的计算方法所得结果与实测值最为契合;Ghanbari的计算方法能够更有效减少参数变化对解析计算法的影响,从而展现出更强的适应性;徐鹏的计算方法在准确性及适应性方面具一定优势,应用范围更为广泛。在抗震设计中,建议加筋土挡墙施工前后对其自振频率进行评估,并将自振频率与面板水平位移相结合作为衡量结构损伤状态的指标之一。Natural vibration frequency is a crucial parameter in the seismic design of reinforced soil retaining walls.To date,there is no consensus on the calculation methods for the natural vibration frequency of non-monolithic reinforced soil retaining walls.This paper reviews seven existing methods for calculating the natural vibration frequency.Taking the modular reinforced soil retaining wall(hereinafter referred to as the modular type)and the composite gabion geogrid reinforced soil retaining wall(hereinafter referred to as the composite type)as research subjects,we assess the effectiveness of these existing calculation methods by comparing the accuracy coefficient and the absolute percentage error between the measured and calculated results.The analysis reveals that the natural vibration frequencies of the modular and composite models are generally consistent at different heights.Wu Yongsheng’s calculation method shows the closest agreement with the actual measurements.Ghanbari’s method can more effectively mitigate the influence of parameter changes on the analytical calculation,thus demonstrating stronger adaptability.Xu Peng’s method has certain advantages in terms of accuracy and adaptability,with a wider application scope.In seismic design,we recommend that engineers evaluate the natural vibration frequency of the reinforced soil retaining wall before and after construction and consider the horizontal displacement of the panels as an indicator to measure the structural damage state.

关 键 词：土工合成材料 加筋土挡墙 自振频率 振动台试验 对比分析 

分 类 号：TU476[建筑科学—结构工程]