0571-87090099
新闻资讯
地基和基础检查与检测的内容介绍
发布时间:2019-08-24 19:48 阅览量:

房屋建筑的地基基础检查,应包括下列内容:

  1  岩土工程勘察报告和基础设计、施工验收等资料核查;

  2  结构或填充墙体中因地基不均匀沉降出现的裂缝,以及建筑倾斜与不均匀沉降等检查;

  3  对建在河涌、水渠、山坡、采空区等危险地段的房屋建筑,应检查房屋结构损伤、变形等状况;

  4  对于同一鉴定单元存在不同类型基础或基础埋深不同时,应检查不同类型基础或基础埋深不同部位引起的建筑结构不均匀沉降与损伤,并应检查上部结构相应部位的构造;

  5  当房屋建筑周围存在基坑开挖或管沟施工以及振动源等情况时,应对房屋建筑的倾斜、结构构件开裂和不均匀沉降的情况进行检查.

  当出现下列情况时,应对地基基础进行检测和评估:

  1  对于缺少岩土工程勘察资料且建筑抗震设防类别为甲、乙类的建筑,或缺少岩土工程勘察资料且不均匀沉降较为严重的建筑抗震设防类别为丙类的建筑,应进行补充勘察;

  2  当发现建筑结构出现与地基沉降有关的裂缝或倾斜现象且有发展迹象时,应进行变形观测以及基础类型、基础宽度和埋深等的检测;

  3  对于处于河涌、水渠、山坡、采空区等地质灾害影响范围内并出现建筑结构损伤状况的,应进行地质灾害的调查、监测与评估.

  对于需要检测的浅埋基础,应通过开挖进行检测.单栋房屋建筑中,每种类型的基础宜选择有代表性的位置开挖 1 个,查看基础类型、量测截面尺寸及埋深、检测材料强度和外观质量等,必要时应检测混凝土基础的钢筋配置和钢筋锈蚀状况.对于深基础,则宜通过小范围局部开挖进行检测.

  房屋建筑位于可能出现滑坡、泥石流等地质灾害影响范围内,或建在斜坡场地上时,应先期进行地质灾害的调查、监测或稳定性评价.

  房屋建筑地质灾害和腐蚀环境对基础的影响,应通过检测和监测结果进行评定.对于处于腐蚀环境中的房屋建筑,宜对基础所处环境土壤中的腐蚀介质进行取样测定.


The inspection of the foundation foundation of the building should include the following:
1 Geotechnical engineering survey report and basic design, construction acceptance and other data verification;
2 Cracks in the structure or filling wall due to uneven settlement of the foundation, as well as inspection of building tilt and uneven settlement;
3 For buildings built in dangerous areas such as river surges, canals, hillsides, and empty mining areas, structural damage and deformation of houses should be checked;
4 When there are different types of foundation or different foundation depth in the same identification unit, the uneven settlement and damage of the building structure caused by different types of foundation or different parts of the foundation depth should be checked, and the structure of the corresponding parts of the superstructure should be checked.
When foundation pit excavation or trench construction and vibration source exist around the building, the tilt, crack and uneven settlement of structural components should be checked.
The foundation should be tested and evaluated when:
1 Supplementary surveys should be carried out for buildings that lack geotechnical engineering survey data and that are of type A or B construction, or buildings that lack geotechnical engineering survey data and have a relatively serious non-uniform settlement.
2 When cracks or tilts related to foundation subsidence are found and there are signs of development in the building structure, deformation observations and detection of foundation types, Foundation widths and burial depths should be performed;
The investigation, monitoring and evaluation of geological hazards should be carried out.
For the shallow buried foundation that needs to be tested, it should be detected by excavation. In a single building building, each type of foundation should choose a representative location to excavate 1, check the basic type, measurement section size and depth, and test material strength and appearance. Quality, etc.. When necessary, reinforced steel configuration and corrosion of concrete foundation should be detected.
When the building is located within the range of possible landslide, debris flow, etc..
For buildings in corrosive environment, it is advisable to sample and determine the corrosion medium in the environment soil.