大型建（构）筑物采动损坏与防护技术研究

With the rapid development of the city and project construction in china, a large number of high-rise or large-span buildings were constructed on the mining subsidence area in resource-based city in order to relief the construction land. Hoverer, the existing research achievements of building mining damage and protection technology for the previous low-rise buildings is not suit for the height、span、structure、foundation form、load and other changes of new-built large buildings. Thus, it takes a huge hidden trouble problem. Therefore, the data analysis of on-line measuring、mechanical calculations、structure model tests、numerical simulation、anti-deformation experiments and other research methods will be used in this article. The mining force and deformation law and mining damage evaluation standard of constructing large buildings will be pointed out by the research. The safety evaluation method will be put forward according to the structural characteristics of large buildings which are built on the mined-out area. The safety technical measures will be seek which suit for large buildings to enhance the anti-deformation ability, besides the reasonable maintenance measures and monitor measures. These researches will supply the scientific calculation basis and safety guarantee of the land using and construction of mining subsidence area. This research achievement of this topic is the theoretical supplement and perfection of new construction situation on mining subsidence area which has important theoretical value. The achievement application can use mine area land and support construct security, which has good application and popularization prospect.

随着我国城市建设的迅猛发展，资源型城市为缓解建设用地大量在采煤沉陷区上方兴建大型建（构）筑物，而以往针对低矮建（构）筑物的采动损坏与防护技术研究成果大多因大型建（构）筑物在高度、跨度、结构、基础型式、荷载等诸多方面的变化而不再适合，由此带来了极大的安全隐患。 为此，本课题拟采用实测数据分析、力学计算、结构模型试验、数值模拟、抗变形力学试验等多种研究手段，通过研究揭示大型建（构）筑物的采动受力与变形规律，建立大型建（构）筑物的采动损坏评价标准，根据大型建（构）筑物的结构特点，提出采空区上方大型建（构）筑物建设安全性的评价方法，并寻求适合于大型建（构）筑物的抗变形结构技术措施，及合理的维修措施和监测措施，为采煤塌陷区土地利用和建设提供科学的计算依据和安全保障。本课题研究成果是针对采煤塌陷区建设新形势下的理论补充与完善，具有重要的理论价值和应用价值，且具有广阔的推广应用前景。

随着我国城市建设的迅猛发展，资源型城市为缓解建设用地大量在采煤沉陷区上方兴建大型建（构）筑物，而以往针对低矮建（构）筑物的采动损坏与防护技术研究成果大多因大型建（构）筑物在高度、跨度、结构、基础型式、荷载等诸多方面的变化而不再适合，由此带来了极大的安全隐患。.课题采用实测数据分析、力学计算、结构模型试验、数值模拟、抗变形力学试验等多种研究手段，取得主要成果如下：.（1）开展采煤沉陷区高层建筑物沉陷变形观测，结合以往观测成果，分析总结了采煤塌陷区地表和建筑物的沉陷变形规律，掌握了建筑物采动变形与地表变形的关系，结合建筑物结构采动破坏性试验，建立了大型建筑物多指标综合评价向量采动损坏评价标准。.（2）分别采用数值模拟、现场试验，分析并建立了大型建（构）筑物基础与地基、上部结构之间的相互作用关系，确定了高层建（构）筑物安全评价的主要因素及指标。.（3）通过荷载影响深度力学计算、覆岩裂隙带发育高度观测总结，同时考虑建筑物的允许地表倾斜值，建立并完善了采空（动）区地基稳定性评价方法。.（4）通过大型建（构）筑物抗变形数值模拟计算、机理研究、工程实践，探索了适合于大型建筑物的的抗变形技术措施，提出了地表沉陷和建筑物形变精准协同监测技术。.课题取得了创新性研究成果，补充、完善了新形势下采煤塌陷区的建设理论，为采煤塌陷区土地利用和建设提供了科学的计算依据和安全保障。.本课题全面完成了申报书提出的各项内容和指标。发表学术论文15篇，其中国际会议论文3篇，EI检索1篇。取得国家发明专利1项，获得省部级科技进步奖4项。以本课题为平台，培养硕士研究生3名。