现代交通技术2025，Vol.22Issue(3)：33-40,8.
竖井开挖对邻近古建筑的力学响应研究
Study on Mechanical Response of Shaft Excavation to Adjacent Historic Building
杨融 1赵光 2杜恭榜 2王嘉琛 3谭师好 4卢松3
作者信息
- 1. 南京市公共工程建设中心,南京 210019||苏交科集团股份有限公司,南京 210019
- 2. 苏交科集团股份有限公司,南京 210019
- 3. 北京交通大学城市地下工程教育部重点实验室,北京 100044
- 4. 湖南省交通规划勘察设计院有限公司,长沙 410200
- 折叠
摘要
Abstract
The research simulates the whole process of shaft construction by using numerical software in the context of Nan-jing Jianning West Road River-crossing Tunnel underpassing Yifengmen Ancient City Wall project,and systematically studies the mechanism of engineering activities on the strata,enclosure system and adjacent historical building.The research re-sults show that the soil outside the shaft will have obvious reinforcement effect,leading to a reduction in the deformation of the stratum as a result of the disturbance.The internal force distribution of the envelope structure changes significantly.The additional stress field causes the bending moment and lateral displacement of its cross-section to increase nonlinearly.The pile foundation in the city gate area experiences significant horizontal displacement,and the change in the interaction mecha-nism between piles and soil leads to a weakening of the foundation's bearing capacity,resulting in significant settlement of the upper city tower.The displacement concentration zone is formed in the connection area between the new and old structures due to a sudden change in stiffness,which poses a dual risk of crack initiation and propagation in this area.In addition,based on comprehensive analysis of technical factors,such as the deformation of strata,underground continuous walls and city walls,it is determined that the shaft construction sequence with synchronous excavation is the best construction sequence.The research results can provide reference for the design and construction of similar projects.关键词
方案比选/施工扰动/竖井施工/古建筑/数值模拟Key words
scheme comparison/construction disturbance/shaft construction/historic building/numerical simulation分类
交通工程引用本文复制引用
杨融,赵光,杜恭榜,王嘉琛,谭师好,卢松..竖井开挖对邻近古建筑的力学响应研究[J].现代交通技术,2025,22(3):33-40,8.
