市政技术2026，Vol.44Issue(2)：175-185,11.DOI:10.19922/j.1009-7767.2026.02.175
基坑临边履带式装备动荷载对邻近建筑的响应分析
Response Analysis of the Adjacent Buildings to Dynamic Load of Crawler Equipment at the Deep Excavation Edges
赵海涛 1梁红忠 2张志红 1孙响 2朱超2
作者信息
- 1. 北京工业大学建筑工程学院,北京 100124
- 2. 北京市政路桥股份有限公司,北京 100161
- 折叠
摘要
Abstract
In order to address the issue of dynamic response in adjacent buildings induced by the moving load of ro-tary drilling rigs in urban foundation pit engineering,based on the Beijing Anli Rapid Road Reconstruction Project(the building is only 2.2 meters away from the foundation pit),the dynamic response mechanisms were systemati-cally revealed and effective control strategies were proposed by establishing a fully coupled rig-soil-building nu-merical model.The research results indicated that the dynamic response of a rotary drilling rig under moving load exhibits a three-stage characteristic of impact phase(the peak building settlement of 4.9 mm),fluctuation phase(four-cycle fluctuations matching the track vibration frequency),and attenuation phase(settlement ≤ 1 mm in 82％area),which collectively form a complete energy transfer path of"vibration-stress-deformation";A dynamic load safety threshold system was established by the code requirements(40 t/low risk,80 t/medium risk,and 120 t/high risk).When the dynamic load exceeds 40 t,the foundation vibration velocity will surpass limits by 104％-138％;An effective measure is proposed by coordinated control of"Velocity-Space".A travel speed of 1.0 m/s effectively avoids energy accumulation and mitigates the load impact,that a moving path ≥5 m reduces settlement by 80％and vibration velocity by 71％,forming a graded control strategy.The research outcomes provide a theoretical basis and practical guidance for dense urban foundation pit engineering,achieving synergistic optimization of safety and con-struction efficiency.关键词
深基坑/施工机械/动力响应/数值模拟/邻近建筑/荷载阈值Key words
deep foundation pit/construction machinery/dynamic response/numerical simulation/the adjacent buildings/load threshold分类
建筑与水利引用本文复制引用
赵海涛,梁红忠,张志红,孙响,朱超..基坑临边履带式装备动荷载对邻近建筑的响应分析[J].市政技术,2026,44(2):175-185,11.
