Safe distance of cultural and historical buildings from subway lines
Safe distance of cultural and historical buildings from subway lines
复制标题
DOI：
10.1016/j.soildyn.2017.02.008
复制
发表时间：
2017-05-01
影响因子：
4
通讯作者：
Esmaeili, M. Hassan
中科院分区：
文献类型：
--
作者：
Sadeghi, Javad;Esmaeili, M. Hassan
靠近历史遗迹的地铁（地铁）的建设和运营一直是联合国教科文组织等世界遗产保护机构关注的主要问题之一。虽然地铁缓解了拥挤的交通状况并促进了旅游业的发展，但地铁引起的振动可能会损坏文化和历史建筑 (CHS)。尽管人们对地铁振动特性和CHS防护方法进行了各种研究，但对于得出CHS与地铁安全距离的措施仍缺乏足够的研究。针对这一需求，本研究进行了深入的理论和实验研究，旨在开发安全距离预测图（SD）。为此，开发了轨道和周围介质的有限元模型。该模型相对于当前模型的优点是考虑了真实（现场）列车负载条件作为输入。通过将其结果与本研究中进行的综合现场测量结果进行比较，该模型得到了验证。本研究从地铁诱发振动的角度对 CHS 和轨道下部结构进行了新的分类。通过模型的参数分析，首次将 SD 开发为地铁特征、地铁与 CHS 之间介质的地质力学特性以及 CHS 类型的函数。论证了SD在地铁新线建设中的有效性和实用性。结果表明，本文开发的SD图可以作为历史城市地铁线路设计的有效工具。
Construction and operation of subways (metros) closed to historical sites have been one of the main concerns of the world heritage protection bodies such as UNESCO. While metros alleviate condense traffic conditions and boost the tourism industry, the metro induced vibrations might damage cultural and historical structures (CHS). Although there have been various studies into the metros vibration characteristics and the CHS protection methods, there is still a lack of sufficient investigations into the measures by which a safe distance of the CHS to the metro can be derived. In response to this need, a thorough theoretical and experimental investigation was made in this research, aiming at developing a safe distance prediction graphs (SD). For this purpose, a finite element model of the track and the surrounding media was developed. The advantage of the model over the current ones is the consideration of the real (in situ) train loading conditions as an input. The model was validated by comparisons of its results with those of a comprehensive field measurement carried out in this research. New classifications of the CHSs and the track sub-structure form the aspect of metro-induced vibrations were developed in this research. Through parametric analyses of the model, the SD was developed for the first time as a function of metro characteristics, geo-mechanical properties of the media between the metro and the CHS, and the type of CHS. The effectiveness and practicability of the SD in construction of new subway lines were illustrated. It was shown that the SD graphs developed here can be taken as an effective tool for the design of subway lines in historical cities.