土工基础

›› 2016, Vol. 30 ›› Issue (6): 667-671.

• 工程实录 • 上一篇    下一篇

地铁施工扰动对沿线地表建筑的影响研究

徐文波，余 剑，万 赞   

  1. （武汉理工大学 土木工程与建筑学院，武汉 430070）
  • 收稿日期:2016-01-20 修回日期:2016-01-27 出版日期:2016-12-20 发布日期:2016-12-22
  • 作者简介:徐文波(1991-)，男，硕士生，研究方向为结构工程。

The Impact Study of Metro Construction Disturbance On Buildings Along The Metro

XU Wenbo, YU Jian, WAN Zan   

  1. (School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070)
  • Received:2016-01-20 Revised:2016-01-27 Online:2016-12-20 Published:2016-12-22

摘要： 地铁的快速建设，使由于地铁施工引起沿线建筑物损坏的问题日益突出。先利用Peck经验公式得到地层沉降变化规律，然后结合实测数据得到特定工程地层的沉降曲线，在此基础上，以该沉降曲线作为输入荷载，基于Ansys软件分析平台，计算分析三层单跨和双跨钢筋混凝土框架结构的受力特点，并采用开裂弯矩作为评价指标，分析了结构在不均匀沉降下的安全性能。计算分析表明在该特定工况下结构是安全的。研究成果可为地铁沿线地表建筑物的保护提供指导。

关键词: 沉降, Peck公式, 地铁施工, 框架结构

Abstract: The building destress problems along the subway alignment due to the metro construction receive more and more attentions in recent years. The magnitude of the ground subsidence was quantified using Peck’s observational method and validated with the observed data for a site specific location. Using the settlement curve as the input, the three stories sing span and double spans frame structures were evaluated with a commercial software ANSYS. The cracking moment was used as an index in the structural safety evaluation. Therefore, the structural safety can be quantified with settlement magnitude. The site specific evaluation concluded that the building structures were safe under the input ground subsidence values.

Key words: Ground Subsidence, Peck Observational Methods, Metro Construction, Frame Structures