摘要
本文在对某建筑物场地进行详细勘察的基础上,运用X-衍射、差热分析、透射电子显微镜等微观分析手段和室内常规水理性质实验方法,对场地内③、④层粘土的胀缩性能(机理)进行了详细分析与评价。论述了膨胀土地基上建筑物开裂破坏形式、引起开裂的工程地质条件,并对导致建筑物开裂的内、外因素进行了分析。分析研究方法对同类工程有指导意义。
The paper analysis the extension of the 3rd and 4th clay layers under the foundation of a building by means of X - ray diffraction, heat comparison, electronic radio microscope and indoor regular water element experiments. It describes the form of the crack caused by the extension on the foundation of the building, geological soil condition for crack, and then explains some factors of internal and exernal causes of the crack. The analysis are instructive and helpful to similar projects.
